Oil-free air compressor head and air bag type air compressor

Abstract

The oilless air compressor head comprises an air compression air bag and a rotary supercharging device arranged in the air compression air bag, the air compression air bag comprises unit bag bodies and a mounting frame, a mounting hole is formed in the axis of the mounting frame, and a plurality of unit bag bodies are arranged on the circumference of the inner wall of the mounting hole of the mounting frame; the unit bag bodies are made of non-elastic or low-elasticity materials, the installation frame is provided with an air inlet hole and an exhaust hole, the air inlet hole is communicated with the initial ends, squeezed in a rolling mode, of the unit bag bodies, and the exhaust hole is communicated with the tail ends, squeezed in a rolling mode, of the unit bag bodies. The rotary pressurizing device comprises a pressurizing wheel, the pressurizing wheel rotates around the axis of the mounting frame and extrudes the unit bag body, gas rotates, extrudes and moves from the end, close to the air inlet hole, of the unit bag body to the end, close to the exhaust hole, of the unit bag body, and the gas in the unit bag body is extruded to form compressed gas to be exhausted; the device is simple in structure, energy-saving, adjustable in gas supply amount and low in equipment cost.

Description

Technical Field

[0001] The invention relates to the technical field of air compression equipment, in particular to an oil-free air compressor head and an air bag type air compressor. Background Art

[0002] As we all know, an air compressor is a device used to compress gas. It is a device that converts the mechanical energy of an electric motor into gas pressure energy. Currently, most air compressors are reciprocating piston type, rotating blades or rotating screws. The substantial shortcomings of these two structures are: complex structure, high equipment cost, large energy waste, and uncontrollable air supply. Summary of the invention

[0003] The primary purpose of the present invention is to provide an oil-free air compressor head, which has a simpler structure, can save energy, has an adjustable air supply and has a low equipment cost.

[0004] Another object of the present invention is to provide an air bag type air compressor using the above oil-free air compressor head.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: An oil-free air compressor head, comprising an air compressor bag and a rotary supercharging device arranged in the air compressor bag, the air compressor bag comprising a unit bag body and a mounting frame, the mounting frame axis is provided with a mounting hole, a plurality of unit bags are arranged on the inner wall circumference of the mounting hole of the mounting frame, the unit bags are made of inelastic or low-elastic material, the mounting frame is provided with an air inlet and an air outlet, the air inlet is connected to the initial end of the unit bag body being rolled and squeezed, and the air outlet is connected to the end of the unit bag body being rolled and squeezed; The rotary boosting device includes a boosting wheel, which is used to rotate around the axis of the mounting frame and squeeze the unit capsule, rotating and squeezing the gas from one end of the unit capsule close to the air inlet to the other end of the unit capsule close to the exhaust hole, squeezing the gas in the unit capsule to form compressed gas for discharge.

[0006] In one embodiment, the outer diameter of the rotation track of the booster wheel is equal to the inner diameter of the unit capsule on the inner circumference of the mounting frame when it is attached to the inner wall of the mounting frame.

[0007] In one embodiment, the booster wheel is a booster wheel made of a metal material, or a booster wheel made of a non-metallic material, or an airbag type hollow wheel.

[0008] In one embodiment, the unit capsule body is a capsule cloth sheet made of any one or more materials selected from textile fabric, silicone or rubber, and the periphery of the capsule cloth sheet is sealed and connected to the mounting frame.

[0009] In one embodiment, the unit capsule body is a capsule cloth sheet made of any one or more materials selected from textile fabric, silicone or rubber, the capsule cloth sheet is made into a capsule cloth bag, and one side of the capsule cloth bag is sealed and connected to the mounting frame.

[0010] In one embodiment, the unit capsule is detachably sealed and fixedly connected to the mounting frame.

[0011] In one embodiment, the mounting frame is formed by connecting a plurality of unit frames, and the unit capsule is mounted on the unit frames.

[0012] In one embodiment, the oil-free air compressor head includes at least a first-stage oil-free air compressor head and a second-stage oil-free air compressor head, the exhaust hole in the first-stage oil-free air compressor head is connected to the air inlet hole in the second-stage oil-free air compressor head, the unit capsule in the first-stage oil-free air compressor head is a first-stage unit capsule, and the unit capsule in the second-stage oil-free air compressor head is a second-stage unit capsule, and the volume of the first-stage unit capsule in the first-stage oil-free air compressor head and the volume of the second-stage unit capsule in the second-stage oil-free air compressor head decrease step by step in multiples, so that the compressed gas discharged from the first-stage unit capsule is further compressed in the second-stage unit capsule.

[0013] In one embodiment, a first-level air storage tank is provided between the first-level oil-free air compressor head and the second-level oil-free air compressor head. The first-level oil-free air compressor head compresses the gas and enters the first-level air storage tank. The first-level air storage tank then delivers the first-level pressurized gas to the second-level unit capsule.

[0014] In one embodiment, the first-stage oil-free air compressor head and the second-stage oil-free air compressor head are integrally or separately arranged.

[0015] In one embodiment, the unit capsule in the oil-free air compressor head includes at least a primary unit capsule and a secondary unit capsule spaced apart along the inner wall of the mounting hole of the mounting frame, and the mounting frame is provided with the air inlet hole and the exhaust hole in the area corresponding to the primary unit capsule and the secondary unit capsule, and the exhaust hole in the primary unit capsule area is connected to the air inlet hole in the secondary unit capsule area, and the volume of the primary unit capsule and the volume of the secondary unit capsule in the oil-free air compressor head decreases step by step in multiples, so that the compressed gas discharged from the primary unit capsule is further compressed in the secondary unit capsule.

[0016] In one embodiment, the oil-free air compressor head further includes a gear ring and a gear, the gear ring is fixed to the inner wall of the mounting hole of the mounting frame, the gear is sleeved and fixed to the end of the boost wheel, and the gear is meshed with the gear ring.

[0017] Preferably, the mounting frame includes a mounting movable frame and a mounting fixed frame, the mounting hole is provided at the axis of the mounting fixed frame, at least one mounting movable frame is provided along the circumferential direction of the mounting fixed frame, and the mounting movable frame is installed on the mounting fixed frame, the unit capsule is provided on at least one side of the mounting movable frame, and the air inlet hole and the exhaust hole are opened on the mounting movable frame.

[0018] Preferably, the oil-free air compressor head further comprises a rotation drive mechanism, the mounting movable frame can rotate relative to the mounting fixed frame, and the output end of the rotation drive mechanism is connected to the mounting movable frame to drive the mounting movable frame to rotate.

[0019] Preferably, the oil-free air compressor head also includes a mobile drive mechanism, the rotary drive mechanism is installed at the output end of the mobile drive mechanism, the mobile drive mechanism is installed on the mounting bracket, and the mobile drive mechanism is used to drive the mounting bracket to move toward or away from the mounting hole of the mounting bracket.

[0020] Preferably, the oil-free air compressor head also includes a mobile drive mechanism, which is installed on the mounting fixed frame, and the output end of the mobile drive mechanism is connected to the mounting movable frame, and the mobile drive mechanism is used to drive the mounting movable frame to move toward or away from the mounting hole of the mounting fixed frame.

[0021] In one embodiment, a support base is further included, and the mounting bracket is connected to the support base and can rotate relative to the support base.

[0022] In one embodiment, a rotation driving member is provided on the support base, and an output end of the rotation driving member is connected to the mounting bracket to drive the mounting bracket to rotate relative to the support base.

[0023] In one embodiment, the inner wall of the mounting hole of the mounting frame is provided with a groove along the circumferential direction, the unit sac covers the groove, and after the unit sac is inflated, the shape of the unit sac in the radial cross-section of the mounting frame is symmetrical to the shape of the groove in the radial cross-section of the mounting frame, and the shape of the outer contour of the booster wheel is the same as the shape of the groove.

[0024] In one embodiment, the groove is in an arc shape.

[0025] In one embodiment, the groove includes a first arc segment, a straight segment, and a second arc segment which are sequentially arranged along the axial direction of the mounting frame, the first arc segment and the second arc segment are correspondingly located at two ends of the straight segment, and the first arc segment and the second arc segment are symmetrically arranged.

[0026] In one embodiment, an exhaust check valve is provided on the exhaust hole.

[0027] The present invention also relates to an airbag air compressor, comprising a power drive device and the oil-free air compressor head, the rotary booster device of the oil-free air compressor head also includes spokes, rotatable spokes are provided at both ends or one end of the mounting frame, the spokes are provided with a rollable booster wheel, and the power drive device drives the booster wheel to rotate.

[0028] In one embodiment, the rotary supercharging device also includes a transmission shaft and a transmission device, wherein the transmission shaft is located at the axis of the spokes and is rotatably connected to the mounting frame, and the transmission shaft is connected to the axle of the supercharging wheel via the transmission device, and the power drive device drives the transmission shaft to rotate, thereby driving the supercharging wheel to rotate around the axis of the mounting frame.

[0029] In one embodiment, the transmission device includes a driving wheel, a driven wheel and a transmission belt, the power drive device is connected to the transmission shaft, the driving wheel is arranged on the transmission shaft, the driven wheel is arranged on the axle of the booster wheel, the transmission belt is wound between the driving wheel and the driven wheel, and the power drive device is a driving motor.

[0030] In one embodiment, the driving motor is disposed outside the mounting bracket or the driving motor is disposed in a mounting hole of the mounting bracket.

[0031] In one embodiment, the power drive device includes a conductive slip ring and an outer rotor motor, the spokes are fixedly connected to the stator of the outer rotor motor, the booster wheel is provided on the outside of the outer rotor motor, the conductive slip ring is provided on the mounting frame, the conductive slip ring is electrically connected to the outer rotor motor, and the conductive slip ring is used to connect to an external power supply.

[0032] Compared with the prior art, the oil-free air compressor head of the embodiment of the present invention has the following beneficial effects: In the present invention, a plurality of unit capsules are provided along the circumferential direction on the inner wall of the mounting hole of the mounting frame, the boost wheel abuts against the inner wall of the mounting hole and rotates around the axis of the mounting frame to squeeze the unit capsules during the rolling process, the boost wheel rolls from one end of the unit capsule close to the air inlet to the other end of the unit capsule close to the exhaust hole to compress the gas in the unit capsule, and the pressurized gas can be discharged through the exhaust hole of the mounting frame to complete the gas pressurization process; at the same time, in the process of the boost wheel squeezing the unit capsule, the air inlet is also continuously entering the gas, the air inlet can be connected to the upper-level oil-free air compressor head or the high-pressure gas source to inject compressed gas into the unit capsule, so that the area of ​​the unit capsule from the boost wheel to the air inlet is continuously expanded as the boost wheel rolls, so that the area of ​​the unit capsule that fits the rear end of the boost wheel is gradually increased, thereby giving the boost wheel a continuous forward thrust, so as to boost the boost wheel, reduce the rotational resistance of the boost wheel, and facilitate the boost The rolling of the wheel has the effect of continuously increasing the speed, and the power drive device used to drive the booster wheel to rotate can also reduce the load, thereby increasing the service life of the power drive device; in addition, compared with the elastic unit capsule used in the related art, the present invention uses a unit capsule made of inelastic or low-elastic materials, that is, after the interior of the unit capsule of the present invention is filled with compressed gas, the unit capsule can be restricted from continuing to expand, so that when compressed gas enters the air inlet and drives the unit capsule to expand, the unit airbag can apply all the thrust generated during the expansion process to the rear end of the booster wheel to push the booster wheel forward and achieve a boosting effect. However, when the elastic unit capsule expands and fits to the rear end of the booster wheel, due to the reverse force of the booster wheel, the elastic unit capsule will expand in a direction other than the fit with the booster wheel, thereby failing to achieve a boosting effect on the booster wheel. Therefore, the oil-free air compressor head of the present invention can achieve a better boosting effect compared to other related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is an axial cross-sectional view of an oil-free air compressor head according to Embodiment 1 of the present invention; Figure 2 is a radial cross-sectional view of an oil-free air compressor head according to Embodiment 1 of the present invention; Figure 3 is a schematic diagram of the booster wheel of the first embodiment of the present invention when squeezing the unit capsule; Figure 4 is a radial cross-sectional view of an implementation manner of an oil-free air compressor head according to Example 1 of the present invention; Figure 5 is a schematic diagram of an implementation method of a groove in Example 1 of the present invention; Figure 6 is a schematic diagram of another implementation of the groove of Example 1 of the present invention; Figure 7 is an axial cross-sectional view of a first implementation of an airbag type air compressor according to Example 1 of the present invention; Figure 8 is an axial cross-sectional view of a second implementation of the airbag type air compressor of Example 1 of the present invention; Fig. 9 is an axial cross-sectional view of a third implementation of the airbag type air compressor according to the first embodiment of the present invention; Fig.10 is an axial cross-sectional view of a fourth implementation of the airbag type air compressor according to the first embodiment of the present invention; Fig.11 is an axial cross-sectional view of an airbag type air compressor according to a second embodiment of the present invention; Fig.12 is a radial cross-sectional view of an airbag type air compressor according to a second embodiment of the present invention; Fig.13 is a radial cross-sectional view of an oil-free air compressor head according to a third embodiment of the present invention; Fig.14 is an axial cross-sectional view of an airbag type air compressor according to a sixth embodiment of the present invention; Fig.15 is a schematic diagram of a unit airbag of an airbag type air compressor according to a sixth embodiment of the present invention in a working state; Fig.16 Schematic diagram of a unit airbag in the airbag type air compressor of the sixth embodiment of the present invention being moved out of the mounting hole; Fig.17 is a schematic diagram of an oil-free air compressor head and a supporting base according to a sixth embodiment of the present invention; Fig.18 is a schematic diagram of a unit bag of an air bag type air compressor according to a sixth embodiment of the present invention being moved out of a mounting hole; Fig.19 Schematic diagram of other implementations of the oil-free air compressor head of Example 6 of the present invention; Fig. 20 It is a schematic diagram of the oil-free air compressor head, supporting base and rotating drive member of the sixth embodiment of the present invention.

[0035] In the figure, 100, a first-stage oil-free air compressor head; 200, a second-stage oil-free air compressor head; 1, an air compressor airbag; 11, a unit capsule; 111, a first-stage unit capsule; 112, a second-stage unit capsule; 12, a mounting frame; 121, a mounting hole; 122, an air inlet; 123, an exhaust hole; 124, a groove; 1241, a first arc segment; 1242, a straight segment; 1243, a second arc segment; 125, a unit frame; 126, a mobile mounting frame; 127, a fixed mounting frame; 13, an exhaust unit valve; 14, exhaust pipe; 15, gear ring; 16, gear; 2, rotary supercharger; 21, supercharger wheel; 22, spoke; 23, bearing; 24, transmission shaft; 25, transmission device; 251, driving wheel; 252, driven wheel; 253, transmission belt; 3, heat dissipation device; 4, power drive device; 41, conductive slip ring; 42, internal connecting wire; 43, outer rotor motor; 5, primary gas tank; 6, rotary drive mechanism; 7, mobile drive mechanism; 8, support base; 9, rotating drive member. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] Embodiment 1: like Figure 1 and Figure 3 As shown, the present invention relates to an oil-free air compressor head, comprising an air compressor bag 1 and a rotary supercharging device 2 arranged in the air compressor bag 1, the air compressor bag 1 comprising a unit bag body 11, a mounting frame 12 and an exhaust pipe 14, the mounting frame 12 is provided with a mounting hole 121 at the axis, a plurality of unit bags 11 are arranged on the inner wall circumference of the mounting hole 121 of the mounting frame 12, the unit bags 11 are made of inelastic or low-elastic materials, an air inlet hole 122 and an exhaust hole 123 are arranged on the mounting frame 12, the air inlet hole 122 is connected to the initial end of the unit bag body 11 being rolled and squeezed, the exhaust hole 123 is connected to the end of the unit bag body 11 being rolled and squeezed, and the exhaust hole 123 is connected to the exhaust pipe 14; The rotary booster device 2 includes a booster wheel 21, which is used to rotate around the axis of the mounting frame 12 and squeeze the unit capsule 11, rotating and squeezing the gas from one end of the unit capsule 11 close to the air inlet 122 to the end of the unit capsule 11 close to the exhaust hole 123, squeezing the gas in the unit capsule 11 to form compressed gas for discharge.

[0038] In the present invention, a plurality of unit capsules 11 are arranged along the circumferential direction on the inner wall of the mounting hole 121 of the mounting frame 12, and the booster wheel 21 abuts against the inner wall of the mounting hole 121 and rotates around the axis of the mounting frame 12 to squeeze the unit capsules 11 during the rolling process, and the booster wheel 21 rolls from one end of the unit capsule 11 close to the air inlet 122 to the other end of the unit capsule 11 close to the exhaust hole 123 to compress the gas in the unit capsule 11, and the pressurized gas can be discharged through the exhaust hole 123 of the mounting frame 12, thereby completing the gas boosting process; at the same time, when the booster wheel 21 squeezes the unit capsule 11, the booster wheel 21 can effectively reduce the pressure on the unit capsule 11. During the process of the unit capsule 11, the air inlet 122 also continuously enters the gas, and the air inlet 122 can be connected to an external centrifugal impeller fan, a high-pressure fan, etc. for air supply. The air inlet 122 can also be connected to the oil-free air compressor head of the previous stage or a high-pressure gas source to inject compressed gas into the unit capsule 11, so that the area between the unit capsule 11 from the booster wheel 21 to the air inlet 122 continues to expand as the booster wheel 21 rolls, so that the area of ​​the unit capsule 11 that fits the rear end of the booster wheel 21 is gradually increased, thereby giving the booster wheel 21 a continuous forward thrust, so as to The boosting effect is achieved on the supercharger wheel 21, and the rotational resistance of the supercharger wheel 21 is reduced, which is beneficial to the rolling of the supercharger wheel 21 to continuously increase the speed, and the power drive device 4 used to drive the supercharger wheel 21 to rotate can also reduce the load, thereby increasing the service life of the power drive device 4; in addition, compared with the elastic unit capsule 11 used in the related art, the present invention uses a unit capsule 11 made of inelastic or low-elastic material, that is, after the interior of the unit capsule 11 of the present invention is filled with compressed gas, the unit capsule 11 can be restricted from continuing to expand, so that the air inlet 1 When compressed gas 22 enters and drives the unit capsule 11 to expand, the unit airbag can apply all the thrust generated during the expansion process to the rear end of the booster wheel 21 to push the booster wheel 21 forward and achieve a boosting effect. However, when the elastic unit capsule 11 expands and fits to the rear end of the booster wheel 21, due to the reverse force of the booster wheel 21, the elastic unit capsule 11 will expand in a direction other than the direction of contact with the booster wheel 21, thereby failing to achieve a boosting effect on the booster wheel 21. Therefore, the oil-free air compressor head of the present invention can achieve a better boosting effect than other related technologies. In some embodiments, the outer diameter of the rotation trajectory of the booster wheel 21 is equal to the inner diameter of the unit capsule 11 on the inner circumference of the mounting frame 12 when it is attached to the inner wall of the mounting frame 12.

[0039] That is, when the booster wheel 21 rotates around the axis of the mounting frame 12 to squeeze the unit capsule 11, the booster wheel 21 can press the unit capsule 11 against the inner wall of the mounting hole 121 of the mounting frame 12 to ensure better compression of the gas in the unit capsule 11 and smooth pressurization.

[0040] It needs to be explained that the unit capsule 11 is made of inelastic material, so that the unit capsule 11 cannot continue to expand after being filled with gas and reaching the rated volume; the unit capsule 11 is made of low-elastic material, so that the unit capsule 11 can still expand slightly after being filled with gas and reaching the rated volume.

[0041] In some embodiments, the booster wheel 21 is a booster wheel 21 made of metal, or a booster wheel 21 made of non-metallic material, or an airbag type hollow wheel.

[0042] That is, the booster wheel 21 of the present invention can use a variety of materials to complete the compression of the unit capsule 11. When squeezing the unit capsule 11, the booster wheel 21 can keep the unit capsule 11 pressed against the inner wall of the mounting hole 121 of the mounting frame 12, thereby completing the gas boosting work.

[0043] In some embodiments, the unit capsule 11 is a capsule cloth sheet made of any one or more materials selected from textile fabric, silicone or rubber, and the periphery of the capsule cloth sheet is sealed and connected to the mounting frame 12 .

[0044] That is, when the unit capsule 11 is made of any one of textile fabric, leather, silicone or rubber, the unit capsule 11 is made of a single layer or multiple layers of textile fabric, or a single layer or multiple layers of silicone, or a single layer or multiple layers of rubber; when the unit capsule 11 is made of multiple materials among textile fabric, silicone or rubber, the unit capsule 11 can be a multi-layer structure stacked with textile fabric, silicone and rubber; when the capsule cloth piece is connected to the mounting frame 12, the outer periphery of the capsule cloth piece is sealed and fixed to the inner wall of the mounting hole 121 of the mounting frame 12.

[0045] Optionally, the textile fabric can be Kevlar fiber fabric, ultra-high molecular weight polyethylene fiber fabric, nylon fabric, polyester fabric, Teflon high temperature fabric, glass fiber fabric, aramid fiber, etc. The above-mentioned textile fabric is processed by a dipping process or a surface coating process, so that the textile fabric is airtight to ensure smooth gas compression.

[0046] The textile fabric can be woven more tightly to achieve a slightly breathable or airtight state, so that the gas can also be pressurized under the compression of the booster wheel 21.

[0047] Optionally, the leather can be artificial leather or animal leather. In some embodiments, the unit capsule 11 is a capsule cloth sheet made of any one or more materials selected from textile fabric, silicone or rubber, the capsule cloth sheet is made into a capsule cloth bag, and one side of the capsule cloth bag is sealed and connected to the mounting frame 12.

[0048] That is, after the bag is formed by sewing the bag cloth pieces, one side of the bag is in contact with the inner wall of the mounting hole 121 of the mounting frame 12 and is sealed.

[0049] In some embodiments, the unit capsule 11 is detachably sealed and fixedly connected to the mounting frame 12 .

[0050] Optionally, the unit capsule 11 may be fixedly connected to the mounting frame 12 by snapping, or the unit capsule 11 may be fixed to the inner wall of the mounting hole 121 of the mounting frame 12 by other fixing parts to facilitate replacement and maintenance of the unit capsule 11 .

[0051] In some embodiments, the mounting frame 12 is an integral structure to have sufficient stability.

[0052] Combination Figure 4 As shown, in some embodiments, the mounting frame 12 is formed by connecting a plurality of unit frames 125 , and the unit capsule 11 is mounted on the unit frames 125 .

[0053] Optionally, the mounting frame 12 is formed by connecting a plurality of unit frames 125, and the unit capsule 11 is installed on the unit frame 125 to achieve modular and quick installation; specifically, the mounting frame 12 includes a plurality of unit frames 125 arranged along a circumferential direction, and adjacent unit frames 125 can be snapped together or fixed together by bolts, and a plurality of unit capsules 11 are provided, and a plurality of unit capsules 11 are installed one-to-one on a plurality of the unit frames 125, so that the user can install an appropriate number of unit frames 125 and unit capsules 11 according to the exhaust volume requirements, and it is more convenient to maintain and has high practicality.

[0054] Combination Figure 5 and Figure 6 As shown, in some embodiments, the inner wall of the mounting hole 121 of the mounting frame 12 is provided with a groove 124 along the circumferential direction, and the unit capsule 11 covers the groove 124, and after the unit capsule 11 is inflated, the shape of the unit capsule 11 in the radial cross-section of the mounting frame 12 is symmetrical to the shape of the groove 124 in the radial cross-section of the mounting frame 12, and the shape of the outer contour of the booster wheel 21 is the same as the shape of the groove 124; the unit capsule 11 is provided in plurality, and the plurality of unit capsules 11 are spaced apart along the circumferential direction of the mounting hole 121 of the mounting frame 12.

[0055] By opening a groove 124 on the inner wall of the mounting hole 121 of the mounting frame 12, it is helpful to increase the volume of gas that can be accommodated in the unit capsule 11 to improve the gas production efficiency of the compressed gas, and the groove 124 is symmetrical with the unit capsule 11 after expansion, so that when the booster wheel 21 squeezes the unit capsule 11, the unit capsule 11 can fit tightly in the groove 124, and the unit capsule 11 will not fold, which is conducive to the smooth squeezing of the unit capsule 11 by the booster wheel 21, and also ensures that the unit capsule 11 will not be folded and then squeezed and damaged; in addition, the shape of the axial outer contour of the booster wheel 21 is the same as the shape of the cross-section of the groove 124, so that when the booster wheel 21 rotates around the axis of the mounting hole 121 of the mounting frame 12, the groove 124 has a positioning function on the axial direction of the booster wheel 21, so that the booster wheel 21 is more stable when rotating around the axis of the mounting hole 121.

[0056] In addition, after the unit capsule 11 is inflated, the shape of the radial cross-section of the unit capsule 11 in the mounting frame 12 is symmetrical with the shape of the radial cross-section of the groove 124 in the mounting frame 12. Therefore, the user can vacuum the inside of the unit capsule 11 through the air inlet hole 122 so that the unit capsule 11 can be attached to the groove 124 without folding or wrinkling. Therefore, when the booster wheel 21 rolls over the unit capsule 11 attached to the groove 124 for a long time, it is not easy to crush the unit capsule 11. Therefore, the user can vacuum a certain number of unit capsules 11 according to the exhaust volume requirements during use, so that this part of the unit capsule 11 does not work, and the operability is higher.

[0057] In some embodiments, the axial dimension of the unit capsule 11 along the mounting frame 12 is smaller than the axial dimension of the groove 124, that is, the unit capsule 11 is completely located in the groove 124, and the shape of the area corresponding to the groove 124 and the unit capsule 11 is symmetrical to the shape of the unit capsule 11, so that when the unit capsule 11 is attached to the inner wall of the groove 124, the unit capsule 11 will not have folds and wrinkles, and is not easily damaged under the long-term rolling pressure of the booster wheel 21.

[0058] Optionally, the groove 124 is in an arc shape.

[0059] Optionally, the groove 124 includes a first arc segment 1241, a straight segment 1242 and a second arc segment 1243 which are sequentially arranged along the axial direction of the mounting frame 12, the first arc segment 1241 and the second arc segment 1243 are correspondingly located at two ends of the straight segment 1242, and the first arc segment 1241 and the second arc segment 1243 are symmetrically arranged.

[0060] The groove 124 is composed of a first arc segment 1241, a straight segment 1242, and a second arc segment 1243, which can increase the dimension of the groove 124 in the axial direction of the mounting bracket 12, so as to cooperate with the unit bladder 11 to accommodate more gas.

[0061] As Figure 4 shown, in some embodiments, a heat dissipation device 3 is provided on the outer side surface of the mounting bracket 12 facing away from the unit bladder 11. The heat dissipation device 3 of the present invention can be a water-cooled heat dissipation structure or an air-cooled heat dissipation structure. The water-cooled heat dissipation structure includes water cooling, oil cooling, or other coolants, etc., to facilitate heat dissipation through the heat dissipation device 3.

[0062] As Figures 7 to 10 shown, the present invention also relates to a bladder type air compressor, which includes a power driving device 4 and the oil-free air compressor head. The rotary supercharging device 2 of the oil-free air compressor head further includes a spoke 22. The spoke 22 that can rotate is provided at both ends or one end of the mounting bracket 12. The spoke 22 is provided with the supercharging wheel 21 that can roll. The power driving device 4 drives the supercharging wheel 21 to rotate.

[0063] Specifically, a plurality of the supercharging wheels 21 are spaced apart on the outer circumference of the spoke 22, so as to improve the efficiency of compressing gas when the rotary supercharging device 2 drives the supercharging wheel 21 to rotate and squeeze the unit bladder 11. In one mode, the power driving device 4 can directly drive the supercharging wheel 21 to rotate. Thus, during the rotation of the supercharging wheel 21, it can roll along the inner wall of the mounting hole 121 of the mounting bracket 12 in the circumferential direction of the mounting hole 121 and squeeze the unit bladder 11. At the same time, the supercharging wheel 21 can also drive the spoke 22 to rotate, and the spoke 22 can play a role in positioning the supercharging wheel 21 to allow the supercharging wheel 21 to stably roll on the inner wall of the mounting hole 121; in another mode, the power driving device 4 can directly drive the spoke 22 to rotate, so as to drive the supercharging wheel 21 to roll on the inner wall of the mounting hole 121 through the spoke 22, so as to compress the unit bladder 11 as well.

[0064] In some embodiments, the oil-free air compressor head further includes a gear ring 15 and a gear 16. The gear ring 15 is fixed to the inner wall of the mounting hole 121 of the mounting bracket 12, and the gear 16 is sleeved and fixed to the end of the supercharging wheel 21. The gear 16 meshes with the gear ring 15.

[0065] The end sleeve of the booster wheel 21 is provided with the gear 16, and the gear 16 is meshed with the ring gear 15, so that on the one hand, the rotation of the multiple booster wheels 21 can be synchronized to avoid sliding friction between the booster wheel 21 and the inner wall of the unit capsule 11 and the mounting hole 121, so that the rolling of the booster wheel 21 can be smoother, the heat generation can be reduced, and the service life of the unit capsule 11 can be avoided due to long-term friction. Reduced; on the other hand, since multiple booster wheels 21 are spaced apart in the circumferential direction, and multiple booster wheels 21 are connected to the ring gear 15 through the gear 16, the ring gear 15 can play a role in positioning the multiple booster wheels 21, which is conducive to making the rotation of the multiple booster wheels 21 in the mounting hole 121 of the mounting frame 12 more stable.

[0066] In some embodiments, only one unit capsule 11 may be provided on the inner wall of the mounting hole 121 of the mounting frame 12. However, it is necessary to ensure that the distance between two adjacent booster wheels 21 needs to be adjusted so that when the previous booster wheel 21 rolls to the end of the unit capsule 11 close to the exhaust hole 123, the subsequent booster wheel 21 rolls to the end of the same unit capsule 11 close to the air inlet 122. That is, at the moment when the previous booster wheel 21 completes compressing the unit capsule 11, the subsequent booster wheel 21 starts to compress the same unit capsule 11, so that the compressed gas compressed by the subsequent booster wheel 21 is discharged from the exhaust hole 123, thereby ensuring the stable output of compressed gas.

[0067] In some embodiments, an exhaust check valve 13 is provided on the exhaust pipe 14 or the exhaust hole 123. Through the setting of the exhaust check valve 13, the compressed gas discharged from the exhaust hole 123 will not flow back into the unit capsule 11, thereby affecting the efficiency of the compressed gas.

[0068] It should be noted that the exhaust pipe 14 and the exhaust hole 123 of the present invention do not need to be provided with an exhaust check valve 13. In one use mode, the exhaust pipe 14 is directly connected to the gas-using equipment, so that the compressed gas is directly used to supply the gas-using equipment for operation, thereby avoiding the backflow of the compressed gas and affecting the subsequent gas compression work; in another use mode, by adjusting the distance between the two adjacent supercharging wheels 21, the previous supercharging wheel 21 is allowed to roll to the unit capsule 11 close to the exhaust hole 123. , the rear boost wheel 21 rolls to one end of the same unit capsule 11 close to the air inlet 122, that is, at the moment when the front boost wheel 21 completes compressing the unit capsule 11, the rear boost wheel 21 starts to compress the same unit capsule 11, so that the compressed gas formed by the rear boost wheel 21 is discharged from the exhaust hole 123, avoiding the compressed gas formed by the front boost wheel 21 compressing the unit capsule 11 to flow back to the unit capsule 11, and also ensuring that the oil-free air compressor head can work normally and stably.

[0069] Embodiment 2: The main difference between the second embodiment and the first embodiment is that the oil-free air compressor head is a multi-stage oil-free air compressor head.

[0070] like Fig.11 and Fig.12 As shown, the oil-free air compressor head includes at least a first-stage oil-free air compressor head 100 and a second-stage oil-free air compressor head 200. The exhaust pipe 14 in the first-stage oil-free air compressor head 100 is connected to the air inlet 122 in the second-stage oil-free air compressor head 200. The unit capsule 11 in the first-stage oil-free air compressor head 100 is a first-stage unit capsule 111, and the unit capsule 11 in the second-stage oil-free air compressor head 200 is a second-stage unit capsule 112. The volume of the first-stage unit capsule 111 in the first-stage oil-free air compressor head 100 and the volume of the second-stage unit capsule 112 in the second-stage oil-free air compressor head 200 decrease step by step in multiples, so that the compressed gas discharged from the first-stage unit capsule 111 is further compressed in the second-stage unit capsule 112.

[0071] By setting a first-stage oil-free air compressor head 100 and a second-stage oil-free air compressor head 200, when the booster wheel 21 compresses the first-stage unit capsule 111, the compressed gas discharged from the first-stage unit capsule 111 of the first-stage oil-free air compressor head 100 can enter the second-stage unit capsule 112 of the second-stage oil-free air compressor head 200 through the exhaust pipe 14, and then be further compressed by the booster wheel 21, thereby further compressing to form a higher-pressure compressed gas. It should be noted that the present invention only exemplifies that the oil-free air compressor head at least includes a first-stage oil-free air compressor head 100 and a second-stage oil-free air compressor head 200. The oil-free air compressor head of the present invention can also include a three-stage oil-free air compressor head, a four-stage oil-free air compressor head, etc. The specific number of the oil-free air compressor heads is determined according to actual needs. By setting a multi-stage oil-free air compressor head, the compressed gas can be gradually pressurized.

[0072] Compared with the method of using only a single air compressor to change the air pressure in the related art, the air compressor in the related art needs to be equipped with a large-power air compressor in order to meet various air pressure and exhaust volume requirements, which has high equipment costs. In addition, when applied to production with relatively small air pressure, the large-power air compressor outputs a small air pressure, which also causes power waste. The present invention can stack multiple stages of oil-free air compressor heads according to the actual air pressure and exhaust volume requirements of production, so as to be more suitable for production, reduce equipment costs, and avoid power waste.

[0073] like Fig.12As shown, in some embodiments, the first-stage oil-free air compressor head 100 and the second-stage oil-free air compressor head 200 are split-type arrangements. Specifically, the oil-free air compressor head is provided with two independent ones, which are divided into a first-stage oil-free air compressor head 100 and a second-stage oil-free air compressor head 200, so as to facilitate the selection of different numbers of oil-free air compressor heads to control the output of compressed gas.

[0074] like Fig.11 As shown, in some embodiments, the first-stage oil-free air compressor head 100 and the second-stage oil-free air compressor head 200 are integrally arranged. Specifically, only one mounting frame 12 is provided, and two groups of spokes 22 and two groups of booster wheels 21 are axially arranged in the mounting hole 121 of the mounting frame 12. The two groups of spokes 22 and the two groups of booster wheels 21 are arranged in a one-to-one correspondence, so that the first-stage oil-free air compressor head 100 and the second-stage oil-free air compressor head 200 are sequentially formed axially in the mounting hole 121 of one mounting frame 12, thereby achieving a higher degree of integration.

[0075] In some embodiments, a first-level gas storage tank 5 is provided between the first-level oil-free air compressor head 100 and the second-level oil-free air compressor head 200, and the first-level gas storage tank 5 is connected to the exhaust pipe 14. The first-level oil-free air compressor head 100 compresses the gas and enters the first-level gas storage tank 5, and the first-level gas storage tank 5 then transports the first-level pressurized gas to the second-level unit capsule 112.

[0076] By setting up the first-level gas storage tank 5, the compressed gas output by the first-level oil-free air compressor head 100 can be stored and transported to the second-level oil-free air compressor head 200. It should be understood that the first-level gas storage tank 5 is not necessarily formed by a tank structure, and can also be expanded by partially expanding the exhaust pipe 14, so as to also have the function of storing gas.

[0077] It should be noted that when the oil-free air compressor head is a multi-stage oil-free air compressor head, an exhaust check valve 13 needs to be installed on the exhaust pipe 14 or the exhaust hole 123 to prevent the compressed gas discharged from the exhaust hole 123 from flowing back into the unit capsule 11, thereby avoiding affecting the gas compression work of the oil-free air compressor head.

[0078] Embodiment three: The difference between the third embodiment and the first embodiment is that the unit airbag in the oil-free air compressor head is arranged differently.

[0079] like Fig.13As shown, the unit capsule 11 in the oil-free air compressor head includes at least a primary unit capsule 111 and a secondary unit capsule 112 which are spaced apart along the inner wall of the mounting hole 121 of the mounting frame 12, and the mounting frame 12 is provided with the air inlet hole 122 and the air outlet hole 123 in the area corresponding to the primary unit capsule 111 and the secondary unit capsule 112, and the air outlet hole 123 in the area of ​​the primary unit capsule 111 is connected with the air inlet hole 122 in the area of ​​the secondary unit capsule 112 through the exhaust pipe 14, and the volume of the primary unit capsule 111 and the volume of the secondary unit capsule 112 in the oil-free air compressor head decrease step by step in multiples, so that the compressed gas discharged from the primary unit capsule 111 is further compressed in the secondary unit capsule 112.

[0080] That is, a primary unit capsule 111 and a secondary unit capsule 112 are provided on the inner wall of a mounting hole 121 of a mounting frame 12 of the oil-free air compressor head, so that the gas can also be pressurized step by step. It should be noted that the present invention only takes the example that the oil-free air compressor head includes at least a primary unit capsule 111 and a secondary unit capsule 112. The oil-free air compressor head of the present invention can also include a tertiary unit capsule, a quaternary unit capsule, etc. The oil-free air compressor head can be provided with multiple unit capsules as needed to meet the user's requirements for exhaust volume and air pressure.

[0081] In some embodiments, a first-level gas tank 5 is provided between the first-level unit capsule 111 and the second-level unit capsule 112, and the first-level gas tank 5 is connected to the exhaust pipe 14. The gas in the first-level unit capsule 111 enters the first-level gas tank 5 after being compressed, and the first-level gas tank 5 then transports the first-level pressurized gas to the second-level unit capsule 112.

[0082] It should be noted that a multi-stage unit capsule is provided in the mounting frame of the oil-free air compressor head, and an exhaust check valve 13 needs to be installed on the exhaust pipe 14 or the exhaust hole 123 to prevent the compressed gas discharged from the exhaust hole 123 from flowing back into the unit capsule 11, thereby avoiding affecting the gas compression work of the oil-free air compressor head.

[0083] Embodiment 4: The difference between the fourth embodiment and the first embodiment is that the rotary supercharging device 2 is different.

[0084] Combination Figures 7 to 9As shown, the rotary supercharging device 2 includes a supercharging wheel 21, spokes 22, bearings 23, a transmission shaft 24 and a transmission device 25. The transmission shaft 24 is located at the axis of the spokes 22, and the transmission shaft 24 is rotatably connected to the mounting frame 12 through the bearings 23. The transmission shaft 24 is rotatably connected to the axle of the supercharging wheel 21 through the transmission device 25. The power drive device 4 drives the transmission shaft 24 to rotate, so as to drive the supercharging wheel 21 to rotate around the axis of the mounting frame 12.

[0085] The transmission device 25 includes a driving wheel 251, a driven wheel 252 and a transmission belt 253. The power drive device 4 is connected to the transmission shaft 24. The driving wheel 251 is arranged on the transmission shaft 24, and the driven wheel 252 is arranged on the axle of the booster wheel 21. The transmission belt 253 is wound between the driving wheel 251 and the driven wheel 252. The power drive device 4 is a driving motor.

[0086] The driving motor drives the transmission shaft 24 to rotate, thereby driving the driving wheel 251 to rotate, and then drives the driven wheel 252 to rotate through the transmission belt 253, so as to finally drive the booster wheel 21 to rotate. Since the booster wheel 21 is pressed against the inner wall of the mounting hole 121 of the mounting frame 12, when the booster wheel 21 rotates, it can also roll along the circumferential direction of the mounting hole 121 to squeeze the unit capsule 11 set on the inner wall of the mounting hole 121, and also drive the spoke 22 to rotate. At this time, since the booster wheel 21 and the driving motor are flexibly transmitted, in order to ensure the stability of the booster wheel 21, the gear 16 can position the booster wheel 21, and the spoke 22 can also position the booster wheel 21 to ensure the stability of the booster wheel 21.

[0087] like Figure 7 As shown, in some embodiments, the middle portion of the spoke 22 is hollowed out, and the transmission shaft 24 passes through the middle portion of the spoke 22 and is rotatably connected to the mounting frame 12 .

[0088] like Figure 8 As shown, in some embodiments, the transmission shaft 24 is rotatably connected to the spokes 22 via bearings 23 .

[0089] It should be noted that the transmission shaft 24 has two forms. One is that the transmission shaft 24 can be a component separately arranged in the mounting frame 12, so that after the output shaft of the driving motor is coaxially fixed with the transmission shaft 24, the driving motor is used to drive the transmission shaft 24 to rotate, thereby driving the rotation of the supercharger wheel 21; the other is that the output shaft of the driving motor serves as the transmission shaft 24, and the output shaft of the driving motor is extended into the mounting frame 12, so that the output shaft of the driving motor acts as the transmission shaft 24 to drive the rotation of the supercharger wheel 21.

[0090] In addition, there are two ways to install the transmission shaft 24. One is to allow the transmission shaft 24 to be rotatably connected to the mounting frame 12. The other is to connect one end of the transmission shaft 24 to the driving motor and the other end of the transmission shaft 24 to the driving wheel 251. At this time, the position of the transmission shaft 24 is fixed by the driving motor.

[0091] In some embodiments, the driving motor is disposed outside the mounting frame 12 so as not to occupy internal space and facilitate layout.

[0092] like Fig. 9 As shown, in some embodiments, the drive motor is disposed in the mounting hole 121 of the mounting bracket 12 to improve integration.

[0093] Optionally, the power drive device 4 may also be a power output device such as an engine.

[0094] Embodiment five: The difference between the fifth embodiment and the first embodiment is that the power drive device 4 is different.

[0095] Combination Fig.10 As shown, the power drive device 4 includes a conductive slip ring 41, an inner connecting wire 42 and an outer rotor motor 43, the spoke 22 is fixedly connected to the stator of the outer rotor motor 43, the outer side of the outer rotor motor 43 is provided with the boost wheel 21, the conductive slip ring 41 is arranged on the mounting frame 12, the conductive slip ring 41 is connected to the outer rotor motor 43 via the inner connecting wire 42, and the conductive slip ring 41 is used to connect to an external power source.

[0096] The conductive slip ring 41 is connected to an external power source to provide power, thereby supplying power to the outer rotor motor 43, and the booster wheel 21 is fixed to the outside of the outer rotor motor 43, that is, the booster wheel 21 is fixed to the rotor of the outer rotor motor 43, so that the outer rotor motor 43 can drive the booster wheel 21 to rotate relative to the spoke 22. During the rotation of the booster wheel 21, since the booster wheel 21 abuts against the inner wall of the mounting hole 121 of the mounting frame 12, the booster wheel 21 can roll along the circumferential direction of the inner wall of the mounting hole 121, and also drive the spoke 22 to rotate relative to the mounting frame 12. Since the conductive slip ring 41 can drive the inner connecting wire 42 to rotate with the spoke 22, the inner connecting wire 42 will not be entangled during the rotation of the spoke 22, thereby ensuring the operation of the outer rotor motor 43, so that the booster wheel 21 can smoothly squeeze the unit capsule 11 along the circumferential direction of the mounting hole 121 to complete the gas pressurization work.

[0097] Embodiment six: The difference between Example 6 and Example 1 is that the oil-free air compressor head is different.

[0098] like Figures 14 to 20 As shown, the mounting frame 12 includes a mounting movable frame 126 and a mounting fixed frame 127, the axis of the mounting fixed frame 127 is provided with the mounting hole 121, the mounting fixed frame 127 is provided with at least one mounting movable frame 126 along the circumferential direction, and the mounting movable frame 126 can be movable or fixed on the mounting fixed frame 127, at least one side of the mounting movable frame 126 is provided with the unit capsule 11, and the mounting movable frame 126 is provided with the air inlet hole 122 and the air exhaust hole 123.

[0099] The mounting movable frame 126 can be movably connected to the mounting fixed frame 127. Specifically, the mounting movable frame 126 can be rotatably connected to the mounting fixed frame 127, so that the user can replace and maintain the damaged unit capsule 11 by rotating the mounting movable frame 126. The mounting movable frame 126 can also be movably connected to the mounting fixed frame 127, so that the mounting movable frame 126 can be separated from the mounting fixed frame 127, so that the damaged unit capsule 11 can also be replaced and maintained. At the same time, the mounting movable frame 126 can be fixed on the mounting fixed frame 127, so that after the maintenance work of the oil-free air compressor head is completed, the mounting movable frame 126 can be returned to its original position, and then the mounting movable frame 126 can be fixed to the mounting fixed frame 127.

[0100] In the first embodiment, the oil-free air compressor head also includes a rotary drive mechanism 6, the mounting movable frame 126 can rotate relative to the mounting fixed frame 127, and the output end of the rotary drive mechanism 6 is connected to the mounting movable frame 126 to drive the mounting movable frame 126 to rotate.

[0101] By providing an installation movable frame 126 that can rotate relative to the installation fixed frame 127 on the installation fixed frame 127, and the unit capsule 11 is provided on at least one side of the installation movable frame 126, when the rotation drive mechanism 6 drives the installation movable frame 126 to rotate, it can drive the unit capsule 11 to rotate into the installation hole 121 of the installation fixed frame 127, and can also drive the unit capsule 11 to rotate out of the installation hole 121, thereby facilitating user maintenance; when a plurality of unit capsules 11 are provided on the installation movable frame 126, when the unit capsule 11 in the installation hole 121 is damaged, the rotation drive mechanism 6 drives the installation movable frame 126 to rotate, rotates the damaged unit capsule 11 out of the installation hole 121, and rotates the intact unit capsule 11 into the installation hole 121, so as not to affect the continued use of the oil-free air compressor head, has better practicality, and improves the utilization efficiency of the equipment.

[0102] Specifically, after the installation movable frame 126 is installed on the installation fixed frame 127 , a rotating shaft can be directly inserted into the installation fixed frame 127 along the axial direction, and the rotating shaft is connected to the installation movable frame 126 , so that the installation movable frame 126 is rotatably connected to the installation fixed frame 127 .

[0103] In the second embodiment, the oil-free air compressor head also includes a mobile driving mechanism 7, which is installed on the mounting fixed frame 127, and the output end of the mobile driving mechanism 7 is connected to the mounting movable frame 126. The mobile driving mechanism 7 is used to drive the mounting movable frame 126 to move toward or away from the mounting hole 121 of the mounting fixed frame 127.

[0104] The mobile driving mechanism 7 is fixed on the mounting fixed frame 127, and the output end of the mobile driving mechanism 7 is connected to the mounting mobile frame 126, so that the mobile driving mechanism 7 can drive the mounting mobile frame 126 to move toward or away from the mounting hole 121 of the mounting fixed frame 127, so that when part of the unit capsule 11 is not needed to work, part of the mounting mobile frame 126 can be moved out in the direction away from the mounting hole 121 of the mounting fixed frame 127, so that the user can adjust the working number of the unit capsule 11 according to actual needs to adjust the gas volume of the compressed gas output, which is more practical. When the unit capsule 11 is damaged, the user can also remove the mounting mobile frame 126 through the mobile driving mechanism 7 and replace and maintain the unit capsule 11.

[0105] Specifically, the mounting movable frame 126 can be directly placed on the mounting fixed frame 127, and can be moved toward or away from the mounting hole 121 of the mounting fixed frame 127, so that the mounting movable frame 126 can be pushed and pulled manually, or a linear drive cylinder, a linear drive motor, etc. can be used to automatically drive the mounting movable frame 126 to move.

[0106] In the third embodiment, the oil-free air compressor head also includes a rotating drive mechanism 6 and a moving drive mechanism 7, the mounting movable frame 126 is mounted on the output end of the rotating drive mechanism 6, the rotating drive mechanism 6 is mounted on the output end of the moving drive mechanism 7, the moving drive mechanism 7 is mounted on the mounting fixed frame 127, the moving drive mechanism 7 is used to drive the mounting movable frame 126 to move toward and away from the mounting hole 121 of the mounting fixed frame 127, and the rotating drive mechanism 6 is used to drive the mounting movable frame 126 to rotate.

[0107] That is, the third embodiment combines the rotating drive mechanism 6 and the moving drive mechanism 7, and the moving drive mechanism 7 is installed on the mounting fixed frame 127. The moving drive mechanism 7 can drive the mounting movable frame 126 and the rotating drive mechanism 6 to move toward and away from the mounting hole 121 of the mounting fixed frame 127, so that when part of the unit capsule 11 is not needed to work, part of the mounting movable frame 126 can be moved out in the direction of the mounting hole 121 away from the mounting fixed frame 127, so that the user can adjust the working number of the unit capsule 11 according to actual needs to adjust the gas volume of the compressed gas output, which is more practical. The rotating drive mechanism 6 can drive the mounting movable frame 126 to rotate, turn the damaged unit capsule 11 out of the mounting hole 121, and turn the intact unit capsule 11 into the mounting hole 121, so as not to affect the continued use of the oil-free air compressor head, which is more practical and improves the utilization efficiency of the equipment. Therefore, the combination of the rotating drive mechanism 6 and the moving drive mechanism 7 is more conducive to meeting the user's usage needs.

[0108] Specifically, since the oil-free air compressor head has both a rotary drive mechanism 6 and a mobile drive mechanism 7, a linear drive module can be installed at the position of the mounting bracket 127 for accommodating the mobile drive mechanism 7, and a connecting seat is provided on the linear drive module, and a rotating shaft is rotatably connected to the connecting seat, and the mounting movable frame 126 is connected to the rotating shaft so that the mounting movable frame 126 can rotate relative to the connecting seat, and a locking member can also be provided on the connecting seat, and the locking member can lock the mounting movable frame 126 and the connecting seat when the mounting movable frame 126 rotates to a preset angle to limit the mounting movable frame 126 from continuing to rotate, and the locking member can be a bolt, a positioning pin, etc. Therefore, when the slider on the linear drive module moves, it can drive the connecting seat and the mounting movable frame 126 to move, so as to move toward or away from the mounting hole 121 of the mounting bracket 127, and the mounting movable frame 126 can rotate on the connecting seat to realize that the mounting movable frame 126 can rotate relative to the mounting bracket 127. When the rotation drive mechanism 7 is a rotation drive motor, the rotation drive motor is disposed on the connection seat and is used to drive the rotating shaft to rotate, so as to drive the installation moving frame 126 to rotate.

[0109] In some embodiments, the rotating drive mechanism 6 is a rotating drive motor, the moving drive mechanism 7 is a linear moving drive motor, or a linear driving cylinder, the mounting movable frame 126 is fixed to the output end of the rotating drive motor, the rotating drive motor is fixed to the output end of the linear moving drive motor, and the linear moving drive motor is fixed to the mounting fixed frame 127, thereby realizing the rotation and movement of the mounting movable frame 126, meeting various usage requirements of users, and this method is an automatic control method, which is convenient for user operation.

[0110] In some embodiments, the rotation drive mechanism 6 and the movement drive mechanism 7 may also be manually driven mechanisms, so as to also complete the rotation and movement of the installation movable frame 126 .

[0111] In some embodiments, one unit capsule 11, two unit capsules 11, three unit capsules 11 or four unit capsules 11 may be disposed outside the mounting mobile frame 126, and the specific number of unit capsules 11 may be selected according to specific usage requirements.

[0112] In some embodiments, the oil-free air compressor head further includes a support base 8 , and the mounting bracket 127 is connected to the support base 8 and can rotate relative to the support base 8 .

[0113] By rotatably connecting the mounting bracket 127 to the support base 8, when installation or maintenance is required, the user only needs to stand in one place and gradually rotate the mounting bracket 127 to gradually install or maintain multiple mounting movable brackets 126 and unit capsules 11, which is convenient for users.

[0114] In some embodiments, the oil-free air compressor head maintains a sufficient distance from the bottom of the support base 8 to ensure that the mounting movable frame 126 has sufficient space when withdrawing from the mounting hole 121 .

[0115] In some embodiments, a rotating driving member 9 is provided on the support base 8, and an output end of the rotating driving member 9 is connected to the mounting bracket 127 to drive the mounting bracket 127 to rotate relative to the support base 8, and the rotating driving member 9 is a rotating driving motor.

[0116] By providing a rotating driving member 9 to drive the installation fixing frame 127 to rotate, the installation fixing frame 127 can be automatically driven to rotate, further facilitating the operation of the user.

[0117] It should be noted that all the driving devices, driving mechanisms or driving parts in the present invention may be powered by electricity, pneumatic power or hydraulic oil power, so the driving forms specifically exemplified in the present invention do not limit the protection scope of the present invention.

[0118] Furthermore, the airbag type air compressor of the present invention is not only used to compress air, but also can compress special gases such as nitrogen, oxygen, hydrogen, etc., and can be adjusted according to user needs.

[0119] The optimal boosting working principle of the airbag type air compressor of the present invention is: One of the ways is to set a primary gas storage tank 5 between the primary unit capsule 111 and the secondary unit capsule 112. The primary gas storage tank 5 can be first filled with gas of set pressure and volume by the primary unit capsule 111 or pre-store gas of set pressure and volume in advance.

[0120] When the primary unit capsule 111 is taking in air, the secondary unit capsule 112 is already filled with gas. When the primary unit capsule 111 is already filled with gas, the secondary unit capsule 112 is taking in air and boosting the supercharger wheel 21 .

[0121] Another way is that the first-level air tank 5 is divided into a first air tank and a second air tank, and the first air tank and the second air tank are both pre-filled with compressed gas, and the first-level unit capsule 111 compresses and discharges the compressed gas into the first air tank. At this time, the second air tank supplies air to the second-level unit capsule 112 and boosts the booster wheel 21; when the first-level unit capsule 111 compresses and discharges the compressed gas into the second air tank, at this time, the first air tank supplies air to the second-level unit capsule 112 and boosts the booster wheel 21. By setting the first air tank and the second air tank, an uninterrupted boosting effect is achieved.

[0122] Due to the adoption of the above structure, the present invention has the advantages of simple structure, low equipment cost, energy saving, high pressure enhancement efficiency, good heat dissipation effect, environmental protection and pollution-free, and controllable air supply volume.

[0123] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An oil-free air compressor head, characterized in that: The invention comprises an air-compressed airbag (1) and a rotary supercharging device (2) arranged in the air-compressed airbag (1), wherein the air-compressed airbag (1) comprises a unit bag body (11) and a mounting frame (12), wherein the mounting frame (12) is provided with a mounting hole (121) at the axis thereof, and a plurality of unit bags (11) are arranged on the inner circumference of the mounting hole (121) of the mounting frame (12), wherein the unit bags (11) are made of an inelastic or low-elastic material, and wherein the mounting frame (12) is provided with an air inlet hole (122) and an air outlet hole (123), wherein the air inlet hole (122) is connected to the initial end of the unit bag body (11) being rolled and squeezed, and the air outlet hole (123) is connected to the final end of the unit bag body (11) being rolled and squeezed; The rotary supercharging device (2) comprises a supercharging wheel (21), and the supercharging wheel (21) is used to rotate around the axis of the mounting frame (12) and squeeze the unit capsule (11), so as to rotate and squeeze the gas from one end of the unit capsule (11) close to the air inlet (122) to one end of the unit capsule (11) close to the air outlet (123), so as to squeeze the gas in the unit capsule (11) to form compressed gas for discharge.

2. The oil-free air compressor head according to claim 1, characterized in that: An exhaust check valve (13) is provided on the exhaust hole (123).

3. The oil-free air compressor head according to claim 1, characterized in that: The outer diameter of the rotation track of the boost wheel (21) is equal to the inner diameter of the unit capsule (11) on the inner periphery of the mounting frame (12) when it is attached to the inner wall of the mounting frame (12).

4. The oil-free air compressor head according to claim 1, characterized in that: The unit capsule (11) is a capsule cloth sheet made of any one or more materials selected from textile fabric, silica gel or rubber, and the periphery of the capsule cloth sheet is sealed and connected to the mounting frame (12).

5. The oil-free air compressor head according to claim 1, characterized in that: The unit capsule (11) is detachably sealed and fixedly connected to the mounting frame (12).

6. The oil-free air compressor head according to claim 1, characterized in that: The mounting frame (12) is formed by connecting a plurality of unit frames (125), and the unit capsule (11) is mounted on the unit frames (125).

7. The oil-free air compressor head according to any one of claims 1 to 6, characterized in that: The oil-free air compressor head comprises at least a first-stage oil-free air compressor head (100) and a second-stage oil-free air compressor head (200); the exhaust hole (123) in the first-stage oil-free air compressor head (100) is connected to the air inlet hole (122) in the second-stage oil-free air compressor head (200); the unit capsule (11) in the first-stage oil-free air compressor head (100) is a first-stage unit capsule (111); the unit capsule (11) in the second-stage oil-free air compressor head (200) is a second-stage unit capsule (112); the volume of the first-stage unit capsule (111) in the first-stage oil-free air compressor head (100) and the volume of the second-stage unit capsule (112) in the second-stage oil-free air compressor head (200) decrease in multiples step by step, so that the compressed gas discharged from the first-stage unit capsule (111) is further compressed in the second-stage unit capsule (112).

8. The oil-free air compressor head according to claim 7, characterized in that: A first-stage gas storage tank (5) is provided between the first-stage oil-free air compressor head (100) and the second-stage oil-free air compressor head (200). The first-stage oil-free air compressor head (100) compresses the gas and the gas enters the first-stage gas storage tank (5). The first-stage gas storage tank (5) then transports the first-stage pressurized gas to the second-stage unit capsule (112).

9. The oil-free air compressor head according to claim 7, characterized in that: The first-stage oil-free air compressor head (100) and the second-stage oil-free air compressor head (200) are arranged in an integrated or split manner.

10. The oil-free air compressor head according to any one of claims 1 to 6, characterized in that: The unit capsule (11) in the oil-free air compressor head at least comprises a primary unit capsule (111) and a secondary unit capsule (112) arranged at intervals along the inner wall of the mounting hole (121) of the mounting frame (12); the mounting frame (12) is provided with the air inlet (122) and the air outlet (123) in the area corresponding to the primary unit capsule (111) and the secondary unit capsule (112); the air outlet (123) in the primary unit capsule (111) area is connected to the air inlet (122) in the secondary unit capsule (112); the volume of the primary unit capsule (111) and the volume of the secondary unit capsule (112) in the oil-free air compressor head decrease in multiples step by step, so that the compressed gas discharged from the primary unit capsule (111) is further compressed in the secondary unit capsule (112).

11. The oil-free air compressor head according to any one of claims 1 to 6, characterized in that: The oil-free air compressor head also includes a gear ring (15) and a gear (16); the gear ring (15) is fixed to the inner wall of the mounting hole (121) of the mounting frame (12); the gear (16) is sleeved and fixed to the end of the boost wheel (21); and the gear (16) is meshed with the gear ring (15).

12. The oil-free air compressor head according to any one of claims 1 to 6, characterized in that: The mounting frame (12) comprises a mounting movable frame (126) and a mounting fixed frame (127); the mounting hole (121) is provided at the axis of the mounting fixed frame (127); at least one mounting movable frame (126) is provided on the mounting fixed frame (127) along a circumferential direction, and the mounting movable frame (126) is mounted on the mounting fixed frame (127); the unit capsule (11) is provided on at least one side of the mounting movable frame (126); and the air inlet (122) and the air outlet (123) are provided on the mounting movable frame (126).

13. The oil-free air compressor head according to claim 12, characterized in that: The oil-free air compressor head also includes a rotary drive mechanism (6), the mounting movable frame (126) can rotate relative to the mounting fixed frame (127), and the output end of the rotary drive mechanism (6) is connected to the mounting movable frame (126) to drive the mounting movable frame (126) to rotate.

14. The oil-free air compressor head according to claim 13, characterized in that: The oil-free air compressor head also includes a mobile drive mechanism (7), the rotary drive mechanism (6) is installed at the output end of the mobile drive mechanism (7), the mobile drive mechanism (7) is installed on the mounting frame (127), and the mobile drive mechanism (7) is used to drive the mounting frame (126) to move in a direction close to or away from the mounting hole (121) of the mounting frame (127).

15. The oil-free air compressor head according to claim 12, characterized in that: The oil-free air compressor head further comprises a mobile drive mechanism (7), wherein the mobile drive mechanism (7) is mounted on the mounting fixed frame (127), an output end of the mobile drive mechanism (7) is connected to the mounting movable frame (126), and the mobile drive mechanism (7) is used to drive the mounting movable frame (126) to move in a direction approaching or away from the mounting hole (121) of the mounting fixed frame (127).

16. The oil-free air compressor head according to claim 12, characterized in that: It also comprises a supporting base (8), and the mounting bracket (127) is connected to the supporting base (8) and can rotate relative to the supporting base (8).

17. The oil-free air compressor head according to claim 16, characterized in that: The support base (8) is provided with a rotation driving member (9), and the output end of the rotation driving member (9) is connected to the mounting fixing frame (127) to drive the mounting fixing frame (127) to rotate relative to the support base (8).

18. The oil-free air compressor head according to any one of claims 1 to 6, characterized in that: The inner wall of the mounting hole (121) of the mounting frame (12) is provided with a groove (124) along the circumferential direction, the unit sac (11) covers the groove (124), and after the unit sac (11) is inflated, the shape of the unit sac (11) in the radial cross section of the mounting frame (12) is symmetrical to the shape of the groove (124) in the radial cross section of the mounting frame (12), and the shape of the outer contour of the boost wheel (21) is the same as the shape of the groove (124).

19. The oil-free air compressor head according to claim 18, characterized in that: The groove (124) is in an arc shape.

20. The oil-free air compressor head according to claim 18, characterized in that: The groove (124) comprises a first arc segment (1241), a straight segment (1242) and a second arc segment (1243) which are sequentially arranged along the axial direction of the mounting frame (12); the first arc segment (1241) and the second arc segment (1243) are respectively located at two ends of the straight segment (1242), and the first arc segment (1241) and the second arc segment (1243) are symmetrically arranged.

21. An airbag type air compressor, characterized in that: It comprises a power drive device (4) and an oil-free air compressor head as described in any one of claims 1 to 20, wherein the rotary booster device (2) of the oil-free air compressor head further comprises a spoke (22), and rotatable spokes (22) are provided at both ends or one end of the mounting frame (12), and the spokes (22) are provided with a rollable booster wheel (21), and the power drive device (4) drives the booster wheel (21) to rotate.

22. The airbag type air compressor according to claim 21, characterized in that: The rotary supercharging device (2) further comprises a transmission shaft (24) and a transmission device (25); the transmission shaft (24) is located at the axis of the spokes (22), and the transmission shaft (24) is rotationally connected to the mounting frame (12); the transmission shaft (24) is connected to the axle of the supercharging wheel (21) via the transmission device (25); the power drive device (4) drives the transmission shaft (24) to rotate, thereby driving the supercharging wheel (21) to rotate around the axis of the mounting frame (12).

23. The airbag type air compressor according to claim 22, characterized in that: The transmission device (25) comprises a driving wheel (251), a driven wheel (252) and a transmission belt (253); the power drive device (4) is connected to a transmission shaft (24); the driving wheel (251) is arranged on the transmission shaft (24); the driven wheel (252) is arranged on the axle of the boost wheel (21); the transmission belt (253) is wound between the driving wheel (251) and the driven wheel (252); and the power drive device (4) is a driving motor.

24. The airbag type air compressor according to claim 23, characterized in that: The drive motor is arranged outside the mounting frame (12) or the drive motor is arranged in a mounting hole (121) of the mounting frame (12).

25. The airbag type air compressor according to claim 21, characterized in that: The power drive device (4) comprises a conductive slip ring (41) and an outer rotor motor (43); the spoke (22) is fixedly connected to the stator of the outer rotor motor (43); the boost wheel (21) is arranged outside the outer rotor motor (43); the conductive slip ring (41) is arranged on the mounting frame (12); the conductive slip ring (41) is electrically connected to the outer rotor motor (43); and the conductive slip ring (41) is used to connect to an external power source.

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