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 an installation frame, an installation hole is formed in the axis of the installation frame, at least one unit bag body is arranged on the circumference of the inner wall of the installation hole of the installation frame, and the air compression air bag is arranged in the installation hole of the installation 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 gas supply device is simple in structure, energy-saving, adjustable in gas supply amount and low in equipment cost.

Description

Technical Field

[0001] This utility model relates to the field of air compression equipment technology, and in particular to an oil-free air compressor head and a bladder-type air compressor. Background Technology

[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 the pressure energy of a gas. Currently, most air compressors are reciprocating piston type, rotary vane type, or rotary screw type. 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 objective of this invention is to provide an oil-free air compressor head that has a simpler structure, saves energy, has an adjustable air supply, and has low equipment costs.

[0004] Another objective of this invention is to provide a bladder-type air compressor that uses the aforementioned oil-free air compressor head.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] An oil-free air compressor head includes an air compressor bladder and a rotary booster device disposed within the air compressor bladder. The air compressor bladder includes a unit bladder body and a mounting frame. The mounting frame has a mounting hole at its axis. At least one unit bladder body is disposed around the inner circumference of the mounting hole of the mounting frame. The unit bladder body is made of an inelastic or low-elastic material. The mounting frame has an air inlet and an air outlet. The air inlet is connected to the initial end of the unit bladder body that is being rolled and compressed, and the air outlet is connected to the end of the unit bladder body that is being rolled and compressed.

[0007] The rotary pressurizing device includes a pressurizing wheel, which is used to rotate around the axis of the mounting frame and squeeze the unit capsule, so that the gas is rotated and squeezed from the end of the unit capsule near the air inlet to the end of the unit capsule near the air outlet, and the gas in the unit capsule is squeezed to form compressed gas and discharged.

[0008] In one embodiment, the outer diameter of the rotation trajectory of the booster wheel is equal to the inner diameter of the unit capsule attached to the inner wall of the mounting frame.

[0009] In one embodiment, the booster wheel is a metal booster wheel, or a non-metal booster wheel, or an airbag-type hollow wheel.

[0010] In one embodiment, the unit capsule is a capsule sheet made of any one or more materials selected from textile fabric, silicone, or rubber, and the periphery of the capsule sheet is sealed to the mounting frame.

[0011] In one embodiment, the unit capsule is a capsule sheet made of any one or more materials selected from textile fabric, silicone, or rubber, and the capsule sheet is made into a capsule bag, with one side of the capsule bag being sealed to the mounting frame.

[0012] In one embodiment, the unit capsule is detachably and sealed to the mounting bracket.

[0013] In one embodiment, the mounting frame is composed of several unit frames connected together, and the unit capsules are mounted on the unit frames.

[0014] In one embodiment, the oil-free air compressor head includes at least a primary oil-free air compressor head and a secondary oil-free air compressor head. The exhaust port in the primary oil-free air compressor head is connected to the air inlet port in the secondary oil-free air compressor head. The unit bladder in the primary oil-free air compressor head is a primary unit bladder, and the unit bladder in the secondary oil-free air compressor head is a secondary unit bladder. The volume of the primary unit bladder in the primary oil-free air compressor head and the volume of the secondary unit bladder in the secondary oil-free air compressor head decrease by a multiple in succession, so that the volume of compressed gas discharged from the primary unit bladder is further compressed in the secondary unit bladder.

[0015] In some embodiments, the oil-free air compressor head includes at least a primary oil-free air compressor head and a secondary oil-free air compressor head. The exhaust port in the primary oil-free air compressor head is connected to the air inlet port in the secondary oil-free air compressor head. The unit bladder in the primary oil-free air compressor head is a primary unit bladder, and the unit bladder in the secondary oil-free air compressor head is a secondary unit bladder. The volume of compressed gas discharged from the primary unit bladder is further compressed in the secondary unit bladder.

[0016] In one embodiment, a primary air storage tank is provided between the primary oil-free air compressor head and the secondary oil-free air compressor head. The primary oil-free air compressor head compresses the gas and then enters the primary air storage tank, which then delivers the pressurized gas to the secondary unit bladder.

[0017] In one embodiment, the primary oil-free air compressor head and the secondary oil-free air compressor head are either integrated or separate units.

[0018] In one embodiment, the unit bladder in the oilless air compressor head includes at least a primary unit bladder and a secondary unit bladder spaced apart along the inner wall of the mounting hole of the mounting bracket. The mounting bracket has an air inlet and an exhaust port in the regions corresponding to the primary unit bladder and the secondary unit bladder, and the exhaust port in the region of the primary unit bladder communicates with the air inlet port in the region of the secondary unit bladder. The volume of the primary unit bladder and the volume of the secondary unit bladder in the oilless air compressor head decrease by a multiple at each stage, so that the compressed gas discharged from the primary unit bladder is further compressed in the secondary unit bladder.

[0019] 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 bracket, and the gear is sleeved and fixed to the end of the booster wheel. The gear meshes with the gear ring.

[0020] Preferably, the mounting frame includes a movable mounting frame and a fixed mounting frame. The fixed mounting frame has the mounting hole at its axis. The fixed mounting frame has at least one movable mounting frame along the circumferential direction and is mounted on the fixed mounting frame. The movable mounting frame has the unit capsule on at least one side and has the air inlet and the exhaust outlet.

[0021] Preferably, the oil-free air compressor head further includes a rotary drive mechanism, the mounting mobile frame is rotatable relative to the mounting fixed frame, and the output end of the rotary drive mechanism is connected to the mounting mobile frame to drive the mounting mobile frame to rotate.

[0022] Preferably, the oil-free air compressor head further includes a moving drive mechanism, the rotary drive mechanism is installed at the output end of the moving drive mechanism, the moving drive mechanism is installed on the mounting bracket, and the moving drive mechanism is used to drive the mounting bracket to move toward or away from the mounting hole of the mounting bracket.

[0023] Preferably, the oil-free air compressor head further includes a moving drive mechanism, which is mounted on the mounting bracket. The output end of the moving drive mechanism is connected to the mounting bracket, and the moving drive mechanism is used to drive the mounting bracket to move toward or away from the mounting hole of the mounting bracket.

[0024] In one embodiment, a support base is also included, and the mounting bracket is connected to the support base and is rotatable relative to the support base.

[0025] In one embodiment, the support base is provided with a rotation drive component, the output end of which is connected to the mounting bracket to drive the mounting bracket to rotate relative to the support base.

[0026] In one embodiment, the inner wall of the mounting hole of the mounting bracket is provided with a groove along the circumferential direction, the unit capsule covers the groove, and after the unit capsule is inflated, the shape of the radial section of the unit capsule in the mounting bracket is symmetrical to the shape of the groove in the radial section of the mounting bracket, and the shape of the outer contour of the booster wheel is the same as the shape of the groove.

[0027] In one embodiment, the groove is arc-shaped.

[0028] In one embodiment, the groove includes a first arc-shaped segment, a straight segment, and a second arc-shaped segment arranged sequentially along the axial direction of the mounting bracket. The first arc-shaped segment and the second arc-shaped segment are located at opposite ends of the straight segment, and the first arc-shaped segment and the second arc-shaped segment are arranged symmetrically.

[0029] In one embodiment, the vent is provided with a one-way vent valve.

[0030] In some embodiments, the air inlet is provided with an air inlet one-way valve.

[0031] This utility model also relates to a bladder-type air compressor, including a power drive device and the aforementioned oil-free air compressor head. The rotary booster device of the oil-free air compressor head further includes spokes. The mounting frame has rotatable spokes at both ends or one end. The spokes are provided with rolling booster wheels. The power drive device drives the booster wheels to rotate.

[0032] In one embodiment, the rotary booster device further includes a drive shaft and a transmission device. The drive shaft is located at the center of the spokes and is rotatably connected to the mounting frame. The drive shaft is connected to the axle of the booster wheel via the transmission device. The power drive device drives the drive shaft to rotate, thereby causing the booster wheel to rotate around the center of the mounting frame.

[0033] In one embodiment, the transmission device includes a driving wheel, a driven wheel, and a transmission belt. The power drive device is connected to a transmission shaft. The driving wheel is located on the transmission shaft, the driven wheel is located on the axle of the booster wheel, and the transmission belt is wound between the driving wheel and the driven wheel. The power drive device is a drive motor.

[0034] In one embodiment, the drive motor is located on the outside of the mounting bracket or inside the mounting hole of the mounting bracket.

[0035] In one embodiment, the power drive device includes a conductive slip ring and an external rotor motor. The wheel spokes are fixedly connected to the stator of the external rotor motor. The booster wheel is provided outside the external rotor motor. The conductive slip ring is disposed on the mounting bracket and is electrically connected to the external rotor motor. The conductive slip ring is used to connect to an external power source.

[0036] Compared with the prior art, the oil-free air compressor head of this utility model embodiment has the following advantages:

[0037] In this invention, at least one unit bladder is provided circumferentially on the inner wall of the mounting hole of the mounting frame. The booster wheel abuts against the inner wall of the mounting hole and rotates around the axis of the mounting frame to compress the unit bladder during rolling. The booster wheel rolls from the end of the unit bladder near the air inlet to the end of the unit bladder near the exhaust port to compress the gas inside the unit bladder. The pressurized gas can be discharged through the exhaust port of the mounting frame, completing the gas pressurization process. Simultaneously, as the booster wheel compresses the unit bladder, gas is continuously entering through the air inlet. The air inlet can be connected to the upstream oil-free air compressor head or a high-pressure air source to inject compressed gas into the unit bladder. This causes the area between the booster wheel and the air inlet of the unit bladder to continuously expand as the booster wheel rolls, gradually increasing the area of ​​the unit bladder against the rear end of the booster wheel. This provides a forward thrust to the booster wheel, reducing its rotational resistance and facilitating the operation of the booster wheel. The rolling motion continuously increases the speed, and the power drive device used to drive the booster wheel can also reduce the load, thereby increasing the service life of the power drive device. In addition, compared with the elastic unit bladder used in related technologies, this utility model uses a unit bladder made of inelastic or low-elastic material. That is, after the unit bladder of this utility model is filled with compressed gas, it can limit the continued expansion of the unit bladder. Thus, when compressed gas enters the air inlet and drives the unit bladder to expand, the unit bladder can apply all the thrust generated during the expansion process to the rear end of the booster wheel to push the booster wheel forward, thus providing a boosting effect. However, when an elastic unit bladder expands and fits against the rear end of the booster wheel, it will expand in a direction other than that of the booster wheel due to the reverse force of the booster wheel, thus failing to provide a boosting effect to the booster wheel. Therefore, the oil-free air compressor head of this utility model can achieve a better boosting effect compared with other related technologies. Attached Figure Description

[0038] Figure 1 This is an axial sectional view of the oil-free air compressor head according to Embodiment 1 of this utility model;

[0039] Figure 2 This is a radial sectional view of the oil-free air compressor head according to Embodiment 1 of this utility model;

[0040] Figure 3 This is a schematic diagram of the pressure roller squeezing the bladder of the unit according to Embodiment 1 of this utility model;

[0041] Figure 4 This is a radial sectional view of one embodiment of the oil-free air compressor head of the present utility model;

[0042] Figure 5 This is a schematic diagram of one embodiment of the groove in Embodiment 1 of this utility model;

[0043] Figure 6 This is a schematic diagram of another embodiment of the groove in Embodiment 1 of this utility model;

[0044] Figure 7 This is an axial sectional view of the first embodiment of the airbag-type air compressor of this utility model;

[0045] Figure 8 This is an axial sectional view of the second embodiment of the airbag-type air compressor of the first embodiment of this utility model;

[0046] Figure 9 This is an axial sectional view of the third embodiment of the airbag-type air compressor of the first embodiment of this utility model;

[0047] Figure 10 This is an axial sectional view of the fourth embodiment of the airbag-type air compressor of the first embodiment of this utility model;

[0048] Figure 11 This is an axial sectional view of the airbag-type air compressor according to Embodiment 2 of this utility model;

[0049] Figure 12 This is a radial sectional view of the airbag-type air compressor according to Embodiment 2 of this utility model;

[0050] Figure 13 This is a radial sectional view of the oil-free air compressor head according to Embodiment 3 of this utility model;

[0051] Figure 14 This is an axial sectional view of the airbag-type air compressor of Embodiment Six of this utility model;

[0052] Figure 15 This is a schematic diagram of the unit airbag of the airbag-type air compressor in the working state according to Embodiment Six of this utility model;

[0053] Figure 16 This is a schematic diagram of the airbag removal and installation hole of one unit of the airbag type air compressor in Embodiment 6 of this utility model;

[0054] Figure 17 This is a schematic diagram of the oil-free air compressor head and support base according to Embodiment Six of this utility model;

[0055] Figure 18 This is a schematic diagram of the unit bladder body being removed from the mounting hole of the air bladder type air compressor according to Embodiment Six of this utility model;

[0056] Figure 19 This is a schematic diagram of other embodiments of the oil-free air compressor head according to Embodiment Six of this utility model;

[0057] Figure 20 This is a schematic diagram of the oil-free air compressor head, support base, and rotating drive component according to Embodiment Six of this utility model.

[0058] In the diagram, 100 is the first-stage oil-free air compressor head; 200 is the second-stage oil-free air compressor head; 1 is the air compressor bladder; 11 is the unit bladder body; 111 is the first-stage unit bladder body; 112 is the second-stage unit bladder body; 12 is the mounting bracket; 121 is the mounting hole; 122 is the air inlet; 123 is the air outlet; 124 is the groove; 1241 is the first arc-shaped section; 1242 is the straight section; 1243 is the second arc-shaped section; 125 is the unit frame; 126 is the moving mounting bracket; 127 is the fixed mounting bracket; and 13 is the exhaust unit. 14. Exhaust pipe; 15. Gear ring; 16. Gear; 2. Rotary booster device; 21. Booster wheel; 22. Wheel spoke; 23. Bearing; 24. Drive shaft; 25. Transmission device; 251. Drive wheel; 252. Driven wheel; 253. Drive belt; 3. Heat dissipation device; 4. Power drive device; 41. Conductive slip ring; 42. Internal connecting wire; 43. External rotor motor; 5. Primary air storage tank; 6. Rotary drive mechanism; 7. Moving drive mechanism; 8. Support base; 9. Rotary drive component. Detailed Implementation

[0059] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0060] Example 1:

[0061] like Figure 1 and Figure 3As shown, this utility model relates to an oil-free air compressor head, including an air compressor 1 and a rotary booster device 2 disposed inside the air compressor 1. The air compressor 1 includes a unit bladder 11, a mounting frame 12, and an exhaust pipe 14. The mounting frame 12 has a mounting hole 121 at its axis. At least one unit bladder 11 is disposed on the circumference of the inner wall of the mounting hole 121 of the mounting frame 12. The unit bladder 11 is made of a non-elastic or low-elastic material. The mounting frame 12 has an air inlet 122 and an air outlet 123. The air inlet 122 is connected to the initial end of the unit bladder 11 that is rolled and squeezed, and the air outlet 123 is connected to the end of the unit bladder 11 that is rolled and squeezed. The air outlet 123 is connected to the exhaust pipe 14.

[0062] The rotary pressurizing device 2 includes a pressurizing wheel 21, which is used to rotate around the axis of the mounting frame 12 and squeeze the unit bladder 11, so that the gas is rotated and squeezed from one end of the unit bladder 11 near the air inlet 122 to the other end of the unit bladder 11 near the exhaust port 123, and the gas in the unit bladder 11 is squeezed to form compressed gas and discharged.

[0063] In this invention, at least one unit capsule 11 is provided circumferentially on the inner wall of the mounting hole 121 of the mounting frame 12. The pressure roller 21 abuts against the inner wall of the mounting hole 121 and rotates around the axis of the mounting frame 12 to compress the unit capsule 11 during the rolling process. The pressure roller 21 rolls from the end of the unit capsule 11 near the air inlet 122 to the end of the unit capsule 11 near the exhaust port 123 to compress the gas inside the unit capsule 11. The pressurized gas can be discharged through the exhaust port 123 of the mounting frame 12, completing the gas pressurization process. At the same time, the pressure roller 21 compresses the gas inside the unit capsule 11. During the compression of the unit bladder 11, gas continuously enters through the air inlet 122. The air inlet 122 can be connected to external centrifugal impeller fans, high-pressure fans, etc., for air supply. The air inlet 122 can also be connected to an upstream oil-free air compressor head or high-pressure air source to inject compressed gas into the unit bladder 11. This causes the area between the booster wheel 21 and the air inlet 122 in the unit bladder 11 to continuously expand as the booster wheel 21 rolls, gradually increasing the area of ​​the unit bladder 11 adhering to the rear end of the booster wheel 21. This provides the booster wheel 21 with continued forward thrust, thus increasing the pressure on the unit bladder. The booster wheel 21 acts as a propulsion element, reducing its rotational resistance and thus increasing its speed. Furthermore, the power drive device 4, which drives the booster wheel 21, also reduces its load, thereby extending its service life. In addition, compared to the elastic unit capsule 11 used in related technologies, this invention uses a unit capsule 11 made of inelastic or low-elastic material. That is, after the unit capsule 11 is filled with compressed gas, it restricts further expansion, thereby limiting the expansion of the unit capsule 11 at the air inlet. When compressed gas enters 122 and causes the unit bladder 11 to expand, the unit bladder can apply all the thrust generated during the expansion process to the rear end of the booster wheel 21 to propel the booster wheel 21 forward, thus providing a boosting effect. However, when the elastic unit bladder 11 expands and adheres to the rear end of the booster wheel 21, it will expand in a direction other than adhering to the booster wheel 21 due to the reverse force of the booster wheel 21, thus failing to provide a boosting effect to the booster wheel 21. Therefore, the oil-free air compressor head of this invention can achieve a better boosting effect compared to 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 bladder 11 when it is attached to the inner wall of the mounting frame 12.

[0064] That is, when the booster wheel 21 rotates around the axis of the mounting frame 12 to compress 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 ensure smooth pressurization.

[0065] It should be explained that the unit capsule 11 is made of an inelastic material, so that the unit capsule 11 cannot continue to expand after being filled with gas and reaching its rated volume; the unit capsule 11 is made of a low-elastic material, so that the unit capsule 11 can still expand slightly after being filled with gas and reaching its rated volume.

[0066] In some embodiments, the booster wheel 21 is a metal booster wheel 21, or a non-metal booster wheel 21, or an airbag-type hollow wheel.

[0067] That is, the pressure roller 21 of this utility model can be made of a variety of materials to compress the unit capsule 11. When the pressure roller 21 squeezes the unit capsule 11, it can keep the unit capsule 11 pressed against the inner wall of the mounting hole 121 of the mounting bracket 12, thus completing the gas pressurization work.

[0068] In some embodiments, the unit capsule 11 is a capsule sheet made of any one or more materials selected from textile fabric, silicone or rubber, and the periphery of the capsule sheet is sealed to the mounting frame 12.

[0069] That is, when the unit capsule 11 is made of any one of textile fabric, leather, silicone or rubber, the unit capsule 11 can be 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 of textile fabric, silicone or rubber, the unit capsule 11 can be made of textile fabric, silicone and rubber layers stacked into a multi-layer structure; when the capsule fabric is connected to the mounting frame 12, the outer periphery of the capsule fabric is sealed and fixed to the inner wall of the mounting hole 121 of the mounting frame 12.

[0070] Optionally, the textile fabric can be Kevlar fiber cloth, ultra-high molecular weight polyethylene fiber cloth, nylon cloth, polyester cloth, Teflon high temperature cloth, glass fiber cloth, aramid fiber, etc. The above-mentioned textile fabrics are processed by impregnation process or surface coating process, so that the textile fabrics are not breathable, so as to ensure the smooth compression of gas.

[0071] Textile fabrics can be woven more tightly to achieve a degree of slight breathability or no breathability, so that the gas can be pressurized under the pressure of the pressurizing roller 21.

[0072] Optionally, the leather can be synthetic leather or animal leather. In some embodiments, the unit capsule 11 is a capsule sheet made of one or more materials selected from textile fabric, silicone, or rubber, the capsule sheet being formed into a capsule bag, one side of which is sealed to the mounting frame 12.

[0073] That is, after the bag is formed by sewing the bag fabric pieces together, one side of the bag is fitted and sealed to the inner wall of the mounting hole 121 of the mounting bracket 12.

[0074] In some embodiments, the unit capsule 11 is detachably and sealed to the mounting bracket 12.

[0075] Optionally, the unit capsule 11 can be fixedly connected to the mounting frame 12 by a snap-fit ​​method, or the unit capsule 11 can be fixed to the inner wall of the mounting hole 121 of the mounting frame 12 by other fasteners, so as to facilitate the replacement and maintenance of the unit capsule 11.

[0076] In some embodiments, the mounting bracket 12 is an integral structure to provide sufficient stability.

[0077] 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 frame 125.

[0078] Optionally, the mounting frame 12 is composed of several unit frames 125 connected together, and the unit bladders 11 are installed on the unit frames 125 to achieve modular and quick installation. Specifically, the mounting frame 12 includes multiple unit frames 125 arranged in a circumferential direction. Adjacent unit frames 125 can be snapped together or locked together by bolts. Multiple unit bladders 11 are provided, and multiple unit bladders 11 are installed one-to-one on multiple unit frames 125. Thus, users can install an appropriate number of unit frames 125 and unit bladders 11 according to the exhaust volume requirements, which is more convenient for maintenance and has high practicality.

[0079] Combination Figure 5 and Figure 6 As shown, in some embodiments, the inner wall of the mounting hole 121 of the mounting bracket 12 is provided with a groove 124 along the circumferential direction. The unit capsule 11 covers the groove 124. After the unit capsule 11 is inflated, the shape of the radial section of the unit capsule 11 in the mounting bracket 12 is symmetrical with the shape of the groove 124 in the radial section of the mounting bracket 12. The shape of the outer contour of the booster wheel 21 is the same as the shape of the groove 124. Multiple unit capsules 11 are provided, and multiple unit capsules 11 are spaced apart along the circumferential direction of the mounting hole 121 of the mounting bracket 12.

[0080] By creating a groove 124 on the inner wall of the mounting hole 121 of the mounting bracket 12, the volume of gas that can be contained in the unit capsule 11 can be increased, thereby improving the gas production efficiency of the compressed gas. Furthermore, the groove 124 and the unit capsule 11 are symmetrical after expansion, so that when the pressure roller 21 compresses the unit capsule 11, the unit capsule 11 can fit snugly within the groove 124 without folding. This facilitates smooth compression of the unit capsule 11 by the pressure roller 21 and ensures that the unit capsule 11 will not fold and break under further compression. Additionally, the shape of the outer contour of the pressure roller 21 in the axial direction is the same as the cross-sectional shape of the groove 124, allowing the pressure roller 21 to fit into the groove 124. When the pressure roller 21 rotates around the axis of the mounting hole 121 of the mounting bracket 12, the groove 124 provides axial positioning for the pressure roller 21, making its rotation around the axis of the mounting hole 121 more stable.

[0081] Furthermore, since the shape of the radial cross-section of the unit bladder 11 on the mounting frame 12 is symmetrical to the shape of the groove 124 on the mounting frame 12 after the unit bladder 11 is inflated, the user can evacuate the unit bladder 11 through the air inlet 122. When the unit bladder 11 is attached to the groove 124, the unit bladder 11 will not fold or wrinkle. Therefore, when the booster wheel 21 rolls over the unit bladder 11 attached to the groove 124 for a long time, it is not easy to crush the unit bladder 11. Thus, the user can evacuate the inside of a certain number of unit bladders 11 according to the exhaust volume required during use, so that this part of the unit bladder 11 does not work, which makes it more operable.

[0082] In some embodiments, the dimension of the unit capsule 11 along the axial direction of the mounting bracket 12 is smaller than the dimension of the groove 124 in the axial direction. That is, the unit capsule 11 is completely located within the groove 124, and the shape of the area of ​​the groove 124 corresponding to the unit capsule 11 is symmetrical with the shape of the unit capsule 11. Thus, when the unit capsule 11 is attached to the inner wall of the groove 124, the unit capsule 11 will not have folds or wrinkles, and thus is not easily damaged under the long-term rolling pressure of the pressure roller 21.

[0083] Optionally, the groove 124 is arc-shaped.

[0084] Optionally, the groove 124 includes a first arc-shaped segment 1241, a straight segment 1242, and a second arc-shaped segment 1243 arranged sequentially along the axial direction of the mounting bracket 12. The first arc-shaped segment 1241 and the second arc-shaped segment 1243 are located at the two ends of the straight segment 1242, and the first arc-shaped segment 1241 and the second arc-shaped segment 1243 are arranged symmetrically.

[0085] The groove 124 is composed of a first arc-shaped segment 1241, a straight segment 1242 and a second arc-shaped segment 1243, which can increase the size of the groove 124 in the axial direction of the mounting frame 12, thereby allowing it to accommodate more gas in conjunction with the unit capsule 11.

[0086] like Figure 4 As shown, in some embodiments, the mounting bracket 12 is provided with a heat dissipation device 3 on the outer side away from the unit bladder 11. The heat dissipation device 3 of this utility model 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, so as to facilitate heat dissipation through the heat dissipation device 3.

[0087] like Figures 7 to 10 As shown, this utility model also relates to a bladder-type air compressor, including a power drive device 4 and the oil-free air compressor head. The rotary booster device 2 of the oil-free air compressor head also includes spokes 22. The mounting frame 12 is provided with rotatable spokes 22 at both ends or one end. The spokes 22 are provided with rolling booster wheels 21. The power drive device 4 drives the booster wheels 21 to rotate.

[0088] Specifically, the spokes 22 are provided with multiple pressure rollers 21 spaced apart on their outer periphery, thereby improving the efficiency of gas compression when the rotary pressure boosting device 2 drives the pressure rollers 21 to rotate and compress the unit bladder 11. In one embodiment, the power drive device 4 can directly drive the pressure rollers 21 to rotate, so that during their rotation, the pressure rollers 21 can roll along the circumferential direction of the mounting hole 121 of the mounting bracket 12 and compress the unit bladder 11 on the inner wall of the mounting hole 121. At the same time, the pressure rollers 21 can also drive the spokes 22 to rotate, and the spokes 22 can position the pressure rollers 21 so that the pressure rollers 21 can roll stably on the inner wall of the mounting hole 121. In another embodiment, the power drive device 4 can directly drive the spokes 22 to rotate, thereby driving the pressure rollers 21 to roll on the inner wall of the mounting hole 121 through the spokes 22, so as to compress the unit bladder 11 in the same way.

[0089] 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 booster wheel 21. The gear 16 meshes with the gear ring 15.

[0090] The end of the booster wheel 21 is fitted with the gear 16, which meshes with the gear ring 15. This allows the rotation of multiple booster wheels 21 to be synchronized, preventing sliding friction between the booster wheels 21 and the inner walls of the unit bladder 11 and the mounting hole 121. This results in smoother rolling of the booster wheels 21, reduces heat generation, and prevents a reduction in the service life of the unit bladder 11 due to prolonged friction. Furthermore, since multiple booster wheels 21 are spaced apart along the circumference and connected to the gear ring 15 via the gear 16, the gear ring 15 can position the multiple booster wheels 21, thus facilitating more stable rotation of the multiple booster wheels 21 within the mounting hole 121 of the mounting bracket 12.

[0091] In some embodiments, the inner wall of the mounting hole 121 of the mounting bracket 12 may be provided with only one unit capsule 11. However, it is necessary to ensure that the distance between two adjacent booster rollers 21 is adjusted so that when the first booster roller 21 rolls to the end of the unit capsule 11 near the exhaust port 123, the second booster roller 21 rolls to the end of the same unit capsule 11 near the air inlet 122. That is, at the instant when the first booster roller 21 finishes compressing the unit capsule 11, the second booster roller 21 begins to compress the same unit capsule 11, so that the compressed gas formed by the second booster roller 21 is discharged from the exhaust port 123, thereby ensuring a stable output of compressed gas.

[0092] In some embodiments, an exhaust one-way valve 13 is provided on the exhaust pipe 14 or exhaust port 123. By setting the exhaust one-way valve 13, the compressed gas discharged from the exhaust port 123 will not flow back into the unit bladder 11, thereby affecting the efficiency of the compressed gas.

[0093] It should be noted that the exhaust pipe 14 and exhaust port 123 of this utility model may not require the exhaust one-way valve 13. In one usage, 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 backflow of compressed gas and affecting subsequent gas compression work. In another usage, by adjusting the distance between two adjacent booster rollers 21, the first booster roller 21 is rolled until the unit capsule 11 is close to the exhaust port 12. When the first pressure roller 21 rolls to the end of the same unit bladder 11 near the air inlet 122, that is, at the instant the first pressure roller 21 finishes compressing the unit bladder 11, the second pressure roller 21 begins to compress the same unit bladder 11, so that the compressed gas formed by the second pressure roller 21 is discharged from the exhaust port 123, avoiding the compressed gas formed by the first pressure roller 21 compressing the unit bladder 11 flowing back into the unit bladder 11, and thus ensuring that the oil-free air compressor head can work normally and stably.

[0094] In some embodiments, the air inlet 122 is provided with an air inlet one-way valve. Therefore, gas can be injected into the unit capsule 11 through the air inlet 122, but the gas inside the unit capsule 11 will not be discharged through the air inlet 122. That is, when the booster wheel 21 rolls and compresses the unit capsule 11, all the gas can only be discharged through the exhaust port 123, without affecting the efficiency of gas compression.

[0095] It should be noted that the air inlet 122 can be connected to any position of the unit capsule 11 along the circumferential direction of the mounting hole 121. When the booster wheel 21 rolls to the area between the air inlet 122 and the exhaust hole 123, the unit capsule 11 continues to inject gas through the air inlet 122 and expands, which can push the booster wheel 21 to roll, thus providing a boosting effect to the booster wheel 21. Therefore, when the air inlet 122 is connected to any position of the unit capsule 11 and provides a boosting effect, the technical means used should be considered equivalent.

[0096] In addition, when the air intake port 122 and the exhaust port 123 are arranged close together, the air intake port 122 cannot provide a boosting effect to the booster wheel 21 during the air intake process.

[0097] Example 2:

[0098] The main difference between Example 2 and Example 1 is that the oil-free air compressor head is a multi-stage oil-free air compressor head.

[0099] like Figure 11 and Figure 12 As shown, the oil-free air compressor head includes at least a primary oil-free air compressor head 100 and a secondary oil-free air compressor head 200. The exhaust pipe 14 in the primary oil-free air compressor head 100 is connected to the air inlet 122 in the secondary oil-free air compressor head 200. The unit bladder 11 in the primary oil-free air compressor head 100 is a primary unit bladder 111, and the unit bladder 11 in the secondary oil-free air compressor head 200 is a secondary unit bladder 112. The volume of the primary unit bladder 111 in the primary oil-free air compressor head 100 and the volume of the secondary unit bladder 112 in the secondary oil-free air compressor head 200 decrease by a multiple of each other, so that the compressed gas discharged from the primary unit bladder 111 is further compressed in the secondary unit bladder 112.

[0100] By setting up a primary oil-free air compressor head 100 and a secondary oil-free air compressor head 200, when the booster wheel 21 compresses the primary unit bladder 111, the compressed gas discharged from the primary unit bladder 111 of the primary oil-free air compressor head 100 can enter the secondary unit bladder 112 of the secondary oil-free air compressor head 200 through the exhaust pipe 14, and then be further compressed by the booster wheel 21, thereby forming a higher pressure compressed gas. It should be noted that the oil-free air compressor head described in this utility model is only an example of at least a primary oil-free air compressor head 100 and a secondary oil-free air compressor head 200. The oil-free air compressor head of this utility model can also include a tertiary oil-free air compressor head, a quaternary oil-free air compressor head, etc. The specific number of oil-free air compressor heads is determined according to actual needs. By setting up multiple oil-free air compressor heads, the compressed gas can be gradually pressurized. Furthermore, the volumes of the primary unit bladder 111 and the secondary unit bladder 112 decrease by a multiple at each stage. In this case, the rotary booster device 2 of the primary oil-free air compressor head 100 and the secondary oil-free air compressor head 200 rotates at the same speed relative to the mounting frame 12, which can also complete the step-by-step compression of the gas.

[0101] Compared to related technologies that use only a single air compressor to change air pressure, the air compressors in these technologies need to be configured with high power to meet various air pressure and exhaust volume requirements, resulting in high equipment costs. Furthermore, when applied to production processes with relatively low air pressure, the high-power air compressors output low air pressure, leading to wasted power. In contrast, this invention can stack multiple stages of oil-free air compressor heads according to the actual air pressure and exhaust volume requirements of production, thus better adapting to production, reducing equipment costs, and avoiding wasted power.

[0102] In some embodiments, the oil-free air compressor head includes at least a primary oil-free air compressor head 100 and a secondary oil-free air compressor head 200. The exhaust pipe 14 in the primary oil-free air compressor head 100 is connected to the air inlet 122 in the secondary oil-free air compressor head 200. The unit bladder 11 in the primary oil-free air compressor head 100 is a primary unit bladder 111, and the unit bladder 11 in the secondary oil-free air compressor head 200 is a secondary unit bladder 112. The compressed gas discharged from the primary unit bladder 111 is further compressed in the secondary unit bladder 112.

[0103] Specifically, since the volume of the primary unit bladder 111 is the same as that of the secondary unit bladder 112, the gas can still be compressed in stages by controlling the rotational speed of the rotary booster device 2 of the secondary oilless air compressor head 200 relative to the mounting frame 12 to be less than the rotational speed of the rotary booster device 2 of the primary oilless air compressor head 100 relative to the mounting frame 12.

[0104] like Figure 12As shown, in some embodiments, the primary oil-free air compressor head 100 and the secondary oil-free air compressor head 200 are set separately. Specifically, there are two independent oil-free air compressor heads, namely the primary oil-free air compressor head 100 and the secondary 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.

[0105] like Figure 11 As shown, in some embodiments, the primary oil-free air compressor head 100 and the secondary oil-free air compressor head 200 are integrated. Specifically, only one mounting bracket 12 is provided. The mounting hole 121 of the mounting bracket 12 is provided with two sets of spokes 22 and two sets of booster wheels 21 along the axial direction. The two sets of spokes 22 and the two sets of booster wheels 21 are arranged in a one-to-one correspondence, so that the primary oil-free air compressor head 100 and the secondary oil-free air compressor head 200 are sequentially formed along the axial direction in the mounting hole 121 of one mounting bracket 12, thereby achieving a higher degree of integration.

[0106] In some embodiments, a primary air storage tank 5 is provided between the primary oil-free air compressor head 100 and the secondary oil-free air compressor head 200. The primary air storage tank 5 is connected to the exhaust pipe 14. The primary oil-free air compressor head 100 compresses the gas and then enters the primary air storage tank 5. The primary air storage tank 5 then delivers the pressurized gas to the secondary unit bladder 112.

[0107] By setting up the primary air storage tank 5, the compressed gas output from the primary oil-free air compressor head 100 can be stored and delivered to the secondary oil-free air compressor head 200. It should be noted that the primary air storage tank 5 does not necessarily have to be formed by a tank structure; it can also be partially expanded from the exhaust pipe 14 to have the function of storing gas.

[0108] It should be noted that when the oilless air compressor head is a multi-stage oilless air compressor head, an exhaust one-way valve 13 needs to be installed on the exhaust pipe 14 or exhaust port 123 to prevent the compressed gas discharged from the exhaust port 123 from flowing back into the unit bladder 11, thus avoiding affecting the gas compression operation of the oilless air compressor head.

[0109] Example 3:

[0110] The difference between Example 3 and Example 1 is that the unit air bladder inside the oil-free air compressor head is set in a different way.

[0111] like Figure 13As shown, the unit bladder 11 in the oilless air compressor head includes at least a primary unit bladder 111 and a secondary unit bladder 112 spaced apart along the inner wall of the mounting hole 121 of the mounting bracket 12. The mounting bracket 12 has an air inlet 122 and an air outlet 123 in the areas corresponding to the primary unit bladder 111 and the secondary unit bladder 112, and the air outlet 123 in the area of ​​the primary unit bladder 111 and the air inlet 122 in the area of ​​the secondary unit bladder 112 are connected through the exhaust pipe 14. The volume of the primary unit bladder 111 and the volume of the secondary unit bladder 112 in the oilless air compressor head decreases by a multiple of each other, so that the compressed gas discharged from the primary unit bladder 111 is further compressed in the secondary unit bladder 112.

[0112] That is, a primary unit bladder 111 and a secondary unit bladder 112 are spaced apart on the inner wall of the mounting hole 121 of the mounting bracket 12 of the oilless air compressor head, so that the gas can also be pressurized step by step. It should be noted that the present invention only exemplifies that the oilless air compressor head includes at least a primary unit bladder 111 and a secondary unit bladder 112. The oilless air compressor head of the present invention may also include a tertiary unit bladder, a quaternary unit bladder, etc. The oilless air compressor head can be equipped with multiple unit bladders as needed to meet the user's requirements for exhaust volume and air pressure.

[0113] In some embodiments, a primary gas storage tank 5 is provided between the primary unit bladder 111 and the secondary unit bladder 112. The primary gas storage tank 5 is connected to the exhaust pipe 14. The gas in the primary unit bladder 111 is compressed and enters the primary gas storage tank 5. The primary gas storage tank 5 then delivers the pressurized gas to the secondary unit bladder 112.

[0114] It should be noted that the mounting bracket of the oilless air compressor head is equipped with a multi-stage unit bladder, and an exhaust one-way valve 13 needs to be installed on the exhaust pipe 14 or exhaust port 123 to prevent the compressed gas discharged from the exhaust port 123 from flowing back into the unit bladder 11, thereby avoiding affecting the gas compression operation of the oilless air compressor head.

[0115] Example 4:

[0116] The difference between Example 4 and Example 1 is that the rotary booster device 2 is different.

[0117] Combination Figures 7 to 9As shown, the rotary booster device 2 includes a booster wheel 21, spokes 22, bearings 23, a drive shaft 24, and a transmission device 25. The drive shaft 24 is located at the axis of the spokes 22, and the drive shaft 24 is rotatably connected to the mounting frame 12 through the bearings 23. The drive shaft 24 is rotatably connected to the axle of the booster wheel 21 through the transmission device 25. The power drive device 4 drives the drive shaft 24 to rotate, thereby driving the booster wheel 21 to rotate around the axis of the mounting frame 12.

[0118] 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 located on the transmission shaft 24, the driven wheel 252 is located on the axle of the booster wheel 21, and the transmission belt 253 is wound between the driving wheel 251 and the driven wheel 252. The power drive device 4 is a drive motor.

[0119] The drive motor drives the transmission shaft 24 to rotate, thereby driving the drive wheel 251 to rotate. Then, the drive belt 253 drives the driven wheel 252 to rotate, ultimately driving 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 bracket 12, when the booster wheel 21 rotates, it can also roll along the circumference of the mounting hole 121 to squeeze the unit bladder 11 set on the inner wall of the mounting hole 121, and also drive the spokes 22 to rotate. At this time, since the booster wheel 21 and the drive motor are in flexible transmission, in order to ensure the stability of the booster wheel 21, the gear 16 can position the booster wheel 21, and the spokes 22 can also position the booster wheel 21 to ensure the stability of the booster wheel 21 operation.

[0120] like Figure 7 As shown, in some embodiments, the center of the spokes 22 is hollowed out, and the drive shaft 24 passes through the center of the spokes 22 and is rotatably connected to the mounting frame 12.

[0121] like Figure 8 As shown, in some embodiments, the drive shaft 24 is rotatably connected to the spokes 22 via a bearing 23.

[0122] It should be noted that the drive shaft 24 has two forms. One is that the drive shaft 24 can be a component separately installed in the mounting bracket 12, so that after the output shaft of the drive motor is coaxially fixed with the drive shaft 24, the drive motor drives the drive shaft 24 to rotate, thereby driving the rotation of the booster wheel 21. The other is that the output shaft of the drive motor serves as the drive shaft 24, and the output shaft of the drive motor extends into the mounting bracket 12, so that the output shaft of the drive motor acts as the drive shaft 24 to drive the rotation of the booster wheel 21.

[0123] In addition, there are two ways to install the drive shaft 24. One is to rotatably connect the drive shaft 24 to the mounting bracket 12. The other is to connect one end of the drive shaft 24 to the drive motor and the other end of the drive shaft 24 to the drive wheel 251. In this case, the position of the drive shaft 24 is fixed by the drive motor.

[0124] In some embodiments, the drive motor is located on the outside of the mounting bracket 12 so as not to occupy internal space and to facilitate arrangement.

[0125] like Figure 9 As shown, in some embodiments, the drive motor is disposed within the mounting hole 121 of the mounting bracket 12 to improve integration.

[0126] Optionally, the power drive device 4 can also be a power output device such as an engine.

[0127] Example 5:

[0128] The difference between Example 5 and Example 1 is that the power drive device 4 is different.

[0129] Combination Figure 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 spokes 22 are fixedly connected to the stator of the outer rotor motor 43. The booster wheel 21 is provided outside the outer rotor motor 43. The conductive slip ring 41 is provided on the mounting bracket 12. The conductive slip ring 41 is connected to the outer rotor motor 43 via the inner connecting wire 42. The conductive slip ring 41 is used to connect to an external power source.

[0130] The conductive slip ring 41 is connected to an external power source to provide power to the external rotor motor 43. The booster wheel 21 is fixed to the outside of the external rotor motor 43, that is, the booster wheel 21 is fixed to the rotor of the external rotor motor 43. Thus, the external rotor motor 43 can drive the booster wheel 21 to rotate relative to the spokes 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 bracket 12, the booster wheel 21 can roll along the circumferential direction of the inner wall of the mounting hole 121. At the same time, it also drives the spokes 22 to rotate relative to the mounting bracket 12. Since the conductive slip ring 41 can drive the internal connecting wire 42 to rotate with the spokes 22, the internal connecting wire 42 will not become entangled during the rotation of the spokes 22. This ensures the operation of the external rotor motor 43, so that the booster wheel 21 can smoothly compress the unit capsule 11 along the circumferential direction of the mounting hole 121 to complete the gas pressurization work.

[0131] Example 6:

[0132] The difference between Example 6 and Example 1 is that the oil-free air compressor head is different.

[0133] like Figures 14 to 20 As shown, the mounting frame 12 includes a movable mounting frame 126 and a fixed mounting frame 127. The fixed mounting frame 127 has a mounting hole 121 at its axis. The fixed mounting frame 127 has at least one movable mounting frame 126 along its circumference. The movable mounting frame 126 can be moved or fixed on the fixed mounting frame 127. The unit bladder 11 is provided on at least one side of the movable mounting frame 126. The movable mounting frame 126 has an air inlet 122 and an exhaust 123.

[0134] The movable mounting frame 126 is movably connected to the fixed mounting frame 127. Specifically, the movable mounting frame 126 and the fixed mounting frame 127 can be rotatably connected, allowing the user to replace and maintain the damaged unit bladder 11 by rotating the movable mounting frame 126. Alternatively, the movable mounting frame 126 and the fixed mounting frame 127 can be movably connected, allowing the movable mounting frame 126 to be separated from the fixed mounting frame 127, thus enabling the replacement and maintenance of the damaged unit bladder 11. At the same time, the movable mounting frame 126 can be fixedly mounted on the fixed mounting frame 127, allowing the movable mounting frame 126 to return to its original position after the maintenance work on the oil-free air compressor head is completed, and then the movable mounting frame 126 to be fixed to the fixed mounting frame 127.

[0135] In the first embodiment, the oil-free air compressor head further includes a rotary drive mechanism 6, the mounting movable frame 126 is rotatable 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.

[0136] By providing a rotatable mounting frame 126 on the mounting bracket 127, and having the unit bladder 11 on at least one side of the mounting frame 126, the rotation drive mechanism 6 can rotate the mounting frame 126 to drive the unit bladder 11 into the mounting hole 121 of the mounting bracket 127, or rotate the unit bladder 11 out of the mounting hole 121, thus facilitating user maintenance. When multiple unit bladders 11 are provided on the mounting frame 126, if a unit bladder 11 in the mounting hole 121 is damaged, the rotation drive mechanism 6 can drive the mounting frame 126 to rotate, rotating the damaged unit bladder 11 out of the mounting hole 121, while the intact unit bladder 11 is rotated into the mounting hole 121, so as not to affect the continued use of the oil-free air compressor head, improving practicality and increasing the utilization efficiency of the equipment.

[0137] Specifically, after the mounting mobile frame 126 is installed on the mounting fixed frame 127, a rotating shaft can be directly inserted into the mounting fixed frame 127 along the axial direction, and the rotating shaft is connected to the mounting mobile frame 126, so that the mounting mobile frame 126 is rotatably connected to the mounting fixed frame 127.

[0138] In the second embodiment, the oil-free air compressor head further includes a moving drive mechanism 7, which is mounted on the mounting bracket 127. The output end of the moving drive mechanism 7 is connected to the mounting bracket 126. The moving drive mechanism 7 is used to drive the mounting bracket 126 to move toward or away from the mounting hole 121 of the mounting bracket 127.

[0139] The moving drive mechanism 7 is fixed on the mounting bracket 127, and the output end of the moving drive mechanism 7 is connected to the mounting moving bracket 126. Thus, the moving drive mechanism 7 can drive the mounting moving bracket 126 to move towards or away from the mounting hole 121 of the mounting bracket 127. This also allows the mounting moving bracket 126 to be moved away from the mounting hole 121 of the mounting bracket 127 when the unit capsule 11 is not needed. This allows the user to adjust the number of unit capsules 11 in operation according to actual needs, thereby adjusting the amount of compressed gas output, which is more practical. In addition, when the unit capsule 11 is damaged, the user can also use the moving drive mechanism 7 to remove the mounting moving bracket 126 and replace or maintain the unit capsule 11.

[0140] Specifically, the mounting mobile frame 126 can be placed directly on the mounting fixed frame 127 and can move towards or away from the mounting hole 121 of the mounting fixed frame 127. Thus, the mounting mobile frame 126 can be moved manually by pushing and pulling, or automatically driven by a linear drive cylinder, linear drive motor, etc.

[0141] In the third embodiment, the oil-free air compressor head further includes a rotary drive mechanism 6 and a moving drive mechanism 7. The mounting frame 126 is mounted on the output end of the rotary drive mechanism 6, the rotary drive mechanism 6 is mounted on the output end of the moving drive mechanism 7, and the moving drive mechanism 7 is mounted on the mounting bracket 127. The moving drive mechanism 7 is used to drive the mounting frame 126 to move toward and away from the mounting hole 121 of the mounting bracket 127, and the rotary drive mechanism 6 is used to drive the mounting frame 126 to rotate.

[0142] That is, the third embodiment combines the rotary drive mechanism 6 and the moving drive mechanism 7. The moving drive mechanism 7 is mounted on the mounting bracket 127. The moving drive mechanism 7 can drive the mounting moving bracket 126 and the rotary drive mechanism 6 to move towards and away from the mounting hole 121 of the mounting bracket 127. Thus, when the unit bladder 11 is not needed, part of the mounting moving bracket 126 can be moved away from the mounting hole 121 of the mounting bracket 127. This allows the user to adjust the number of working unit bladders 11 according to actual needs, thereby adjusting the amount of compressed gas output, which is more practical. The rotary drive mechanism 6 can drive the mounting moving bracket 126 to rotate, turning the damaged unit bladder 11 out of the mounting hole 121 and turning the intact unit bladder 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 rotary drive mechanism 6 and the moving drive mechanism 7 is more conducive to meeting the user's needs.

[0143] Specifically, since the oil-free air compressor head has both a rotary drive mechanism 6 and a moving drive mechanism 7, a linear drive module can be installed on the mounting bracket 127 at a location where the moving drive mechanism 7 can be accommodated. A connecting seat is provided on the linear drive module, and a rotating shaft is rotatably connected to the connecting seat. The mounting moving bracket 126 is connected to the rotating shaft, allowing the mounting moving bracket 126 to rotate relative to the connecting seat. Furthermore, a locking element can be provided on the connecting seat. This locking element can lock the mounting moving bracket 126 and the connecting seat when the mounting moving bracket 126 rotates to a preset angle, thus restricting further rotation of the mounting moving bracket 126. The locking element can be a bolt, a locating pin, etc. Therefore, when the slider on the linear drive module moves, it can drive the connecting seat and the mounting moving bracket 126 to move, thereby moving towards or away from the mounting hole 121 of the mounting bracket 127. The mounting moving bracket 126 can rotate on the connecting seat, allowing it to rotate relative to the mounting bracket 127. When the rotary drive mechanism 6 is a rotary drive motor, the rotary drive motor is mounted on the connecting seat and is used to drive the rotating shaft to rotate, thereby driving the mounting mobile frame 126 to rotate.

[0144] In some embodiments, the rotary drive mechanism 6 is a rotary drive motor, and the moving drive mechanism 7 is a linear motion drive motor or a linear drive cylinder. The mounting and moving frame 126 is fixed to the output end of the rotary drive motor, the rotary drive motor is fixed to the output end of the linear motion drive motor, and the linear motion drive motor is fixed to the mounting and fixing frame 127. This enables the rotation and movement of the mounting and moving frame 126, meeting various user needs. Moreover, this method is an automatic control method, which is convenient for user operation.

[0145] In some embodiments, the rotary drive mechanism 6 and the movable drive mechanism 7 can also be manually driven mechanisms to achieve the rotation and movement of the mounting frame 126 in the same way.

[0146] In some embodiments, the exterior of the mounting frame 126 may be provided with one, two, three, or four unit capsules 11, and the specific number of unit capsules 11 can be selected according to specific usage requirements.

[0147] 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.

[0148] 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 install or maintain multiple mounting mobile brackets 126 and unit capsules 11, which is convenient for the user.

[0149] In some embodiments, the oil-free air compressor head is kept at a sufficient distance from the bottom of the support base 8 to ensure that the mounting frame 126 has sufficient position when it exits the mounting hole 121.

[0150] In some embodiments, the support base 8 is provided with a rotation drive 9, the output end of the rotation drive 9 is connected to the mounting bracket 127 to drive the mounting bracket 127 to rotate relative to the support base 8, and the rotation drive 9 is a rotation drive motor.

[0151] By setting a rotation drive component 9 to drive the mounting bracket 127 to rotate, the mounting bracket 127 can be automatically rotated, further facilitating the user's operation.

[0152] It should be noted that all driving devices, driving mechanisms or driving components in this utility model can be electric, pneumatic or hydraulic, etc. Therefore, the specific driving forms exemplified in this utility model do not limit the scope of protection of this utility model.

[0153] Furthermore, the airbag-type air compressor of this invention can not only compress air, but also compress special gases such as nitrogen, oxygen, and hydrogen, and can be adjusted according to the user's needs.

[0154] The optimal booster working principle of this utility model's airbag-type air compressor:

[0155] One approach is to install a primary gas storage tank 5 between the primary unit bladder 111 and the secondary unit bladder 112. The primary gas storage tank 5 can be filled with gas of a set pressure and volume by the primary unit bladder 111 working first, or the gas of a set pressure and volume can be pre-stored.

[0156] When the first-stage unit bladder 111 is taking in air, the second-stage unit bladder 112 is already filled with gas. When the first-stage unit bladder 111 is already filled with gas, the second-stage unit bladder 112 is taking in air and boosting the supercharger wheel 21.

[0157] Another method is that the primary gas storage tank 5 is divided into a first gas storage tank and a second gas storage tank, and both the first and second gas storage tanks are pre-filled with compressed gas. When the primary unit bladder 111 compresses and discharges compressed gas into the first gas storage tank, the second gas storage tank supplies gas to the secondary unit bladder 112 and assists the booster wheel 21. When the primary unit bladder 111 compresses and discharges compressed gas into the second gas storage tank, the first gas storage tank supplies gas to the secondary unit bladder 112 and assists the booster wheel 21. Through the setting of the first and second gas storage tanks, an uninterrupted boosting effect is achieved.

[0158] This utility model, due to the above-mentioned structure, has the advantages of simple structure, low equipment cost, energy saving, high pressure enhancement efficiency, good heat dissipation effect, environmental protection and no pollution, and controllable gas supply.

Claims

1. An oil-free air compressor head, characterized by, The device includes an air compressor (1) and a rotary pressurizing device (2) disposed inside the air compressor (1). The air compressor (1) includes a unit bladder (11) and a mounting frame (12). The mounting frame (12) has a mounting hole (121) on its axis. At least one unit bladder (11) is disposed on the circumference of the inner wall of the mounting hole (121) of the mounting frame (12). The unit bladder (11) is made of a non-elastic or low-elastic material. The mounting frame (12) is provided with an air inlet (122) and an air outlet (123). The air inlet (122) is connected to the initial end of the unit bladder (11) being rolled and squeezed, and the air outlet (123) is connected to the end of the unit bladder (11) being rolled and squeezed. 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), so that the gas moves from one end of the unit capsule (11) near the air inlet (122) to the other end of the unit capsule (11) near the exhaust port (123), and the gas in the unit capsule (11) is squeezed to form compressed gas and discharged.

2. The oil-free air compressor head of claim 1, wherein, An exhaust check valve (13) is provided on the exhaust port (123).

3. The oil-free air compressor head of claim 1, wherein, The outer diameter of the rotation trajectory of the booster wheel (21) is equal to the inner diameter of the unit capsule (11) 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 detachably and sealed to the mounting bracket (12).

5. The oil-free air compressor head of claim 1, wherein, The mounting frame (12) is composed of several unit frames (125) connected together, and the unit capsule (11) is mounted on the unit frame (125).

6. The oil-free air compressor head according to any one of claims 1 to 5, characterized in that The oil-free air compressor head includes at least a primary oil-free air compressor head (100) and a secondary oil-free air compressor head (200). The exhaust port (123) in the primary oil-free air compressor head (100) is connected to the air inlet port (122) in the secondary oil-free air compressor head (200). The unit bladder (11) in the primary oil-free air compressor head (100) is a primary unit bladder (111), and the unit bladder (11) in the secondary oil-free air compressor head (200) is a secondary unit bladder (112). The volume of the primary unit bladder (111) in the primary oil-free air compressor head (100) and the volume of the secondary unit bladder (112) in the secondary oil-free air compressor head (200) decrease by a multiple of each other, so that the volume of compressed gas discharged from the primary unit bladder (111) is further compressed in the secondary unit bladder (112).

7. The oil-free air compressor head according to any one of claims 1 to 5, characterized in that The oil-free air compressor head includes at least a primary oil-free air compressor head (100) and a secondary oil-free air compressor head (200). The exhaust port (123) in the primary oil-free air compressor head (100) is connected to the air inlet port (122) in the secondary oil-free air compressor head (200). The unit bladder (11) in the primary oil-free air compressor head (100) is a primary unit bladder (111), and the unit bladder (11) in the secondary oil-free air compressor head (200) is a secondary unit bladder (112). The volume of compressed gas discharged from the primary unit bladder (111) is further compressed in the secondary unit bladder (112).

8. The oil-free air compressor head of claim 6, wherein, A primary air storage tank (5) is provided between the primary oil-free air compressor head (100) and the secondary oil-free air compressor head (200). The primary oil-free air compressor head (100) compresses the gas and then enters the primary air storage tank (5). The primary air storage tank (5) then delivers the pressurized gas to the secondary unit bladder (112).

9. The oil-free air compressor head of claim 6, wherein, The primary oil-free air compressor head (100) and the secondary oil-free air compressor head (200) are either integrated or separate units.

10. The oil-free air compressor head of any one of claims 1 to 5, wherein, The unit bladder (11) inside the oilless air compressor head includes at least a primary unit bladder (111) and a secondary unit bladder (112) spaced apart along the inner wall of the mounting hole (121) of the mounting bracket (12). The mounting bracket (12) has an air inlet (122) and an exhaust (123) in the area corresponding to the primary unit bladder (111) and the secondary unit bladder (112). The exhaust (123) in the area of ​​the primary unit bladder (111) is connected to the air inlet (122) in the area of ​​the secondary unit bladder (112). The volume of the primary unit bladder (111) and the volume of the secondary unit bladder (112) in the oilless air compressor head decreases by a multiple at each stage, so that the compressed gas discharged from the primary unit bladder (111) is further compressed in the secondary unit bladder (112).

11. The oil-free air compressor head according to any one of claims 1 to 5, 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 bracket (12). The gear (16) is sleeved and fixed to the end of the booster wheel (21). The gear (16) meshes with the gear ring (15).

12. The oil-free air compressor head according to any one of claims 1 to 5, characterized in that, The mounting frame (12) includes a movable mounting frame (126) and a fixed mounting frame (127). The fixed mounting frame (127) has a mounting hole (121) at its axis. The fixed mounting frame (127) has at least one movable mounting frame (126) along the circumferential direction. The movable mounting frame (126) is mounted on the fixed mounting frame (127). The unit capsule (11) is provided on at least one side of the movable mounting frame (126). The movable mounting frame (126) has an air inlet (122) and an exhaust outlet (123).

13. The oil-free air compressor head of claim 12, wherein, The oil-free air compressor head also includes a rotary drive mechanism (6), the mounting mobile frame (126) is rotatable relative to the mounting fixed frame (127), and the output end of the rotary drive mechanism (6) is connected to the mounting mobile frame (126) to drive the mounting mobile frame (126) to rotate.

14. The oil-free air compressor head of claim 13, wherein, The oil-free air compressor head also includes a moving drive mechanism (7), the rotary drive mechanism (6) is installed at the output end of the moving drive mechanism (7), the moving drive mechanism (7) is installed on the mounting bracket (127), and the moving drive mechanism (7) is used to drive the mounting bracket (126) to move toward or away from the mounting hole (121) of the mounting bracket (127).

15. The oil-free air compressor head of claim 12, wherein, The oil-free air compressor head also includes a moving drive mechanism (7), which is mounted on the mounting bracket (127). The output end of the moving drive mechanism (7) is connected to the mounting bracket (126). The moving drive mechanism (7) is used to drive the mounting bracket (126) to move toward or away from the mounting hole (121) of the mounting bracket (127).

16. The oil-free air compressor head of claim 12, wherein, It also includes a support base (8), the mounting bracket (127) is connected to the support base (8) and can rotate relative to the support base (8).

17. The oil-free air compressor head of claim 16, wherein, The support base (8) is provided with a rotation drive (9), the output end of which is connected to the mounting bracket (127) to drive the mounting bracket (127) to rotate relative to the support base (8).

18. The oil-free air compressor head of any one of claims 1 to 5, wherein, The mounting hole (121) of the mounting bracket (12) has a groove (124) along the circumferential direction on the inner wall. The unit capsule (11) covers the groove (124). After the unit capsule (11) is inflated, the shape of the radial section of the unit capsule (11) on the mounting bracket (12) is symmetrical with the shape of the groove (124) on the mounting bracket (12). The outer contour of the booster wheel (21) is the same as the shape of the groove (124).

19. The oil-free air compressor head of claim 18, wherein, The groove (124) is arc-shaped.

20. The oil-free air compressor head of claim 18, wherein, The groove (124) includes a first arc-shaped segment (1241), a straight segment (1242) and a second arc-shaped segment (1243) arranged sequentially along the axial direction of the mounting bracket (12). The first arc-shaped segment (1241) and the second arc-shaped segment (1243) are located at the two ends of the straight segment (1242) respectively, and the first arc-shaped segment (1241) and the second arc-shaped segment (1243) are arranged symmetrically.

21. The oil-free air compressor head of any one of claims 1-5, 8, 9, 13-18, 19, 20, wherein, An air inlet valve is provided on the air inlet (122).

22. An air bag type air compressor, characterized by, The compressor head includes a power drive device (4) and an oil-free air compressor head as described in any one of claims 1-21. The rotary booster device (2) of the oil-free air compressor head further includes spokes (22). The mounting bracket (12) has rotatable spokes (22) at both ends or one end. The spokes (22) are provided with a rollable booster wheel (21). The power drive device (4) drives the booster wheel (21) to rotate.

23. The bag-type air compressor according to claim 22, wherein The rotary booster device (2) further includes a drive shaft (24) and a transmission device (25). The drive shaft (24) is located at the center of the spokes (22) and is rotatably connected to the mounting frame (12). The drive shaft (24) is connected to the axle of the booster wheel (21) via the transmission device (25). The power drive device (4) drives the drive shaft (24) to rotate, thereby causing the booster wheel (21) to rotate around the center of the mounting frame (12).

24. The air-bag type air compressor according to claim 23, wherein The transmission device (25) includes a drive wheel (251), a driven wheel (252) and a transmission belt (253). The power drive device (4) is connected to the transmission shaft (24). The drive wheel (251) is located on the transmission shaft (24). The driven wheel (252) is located on the axle of the booster wheel (21). The transmission belt (253) is wound between the drive wheel (251) and the driven wheel (252). The power drive device (4) is a drive motor.

25. The bag-type air compressor according to claim 24, wherein The drive motor is located on the outside of the mounting bracket (12) or in the mounting hole (121) of the mounting bracket (12).

26. The bag-type air compressor according to claim 22, wherein The power drive device (4) includes a conductive slip ring (41) and an external rotor motor (43). The spokes (22) are fixedly connected to the stator of the external rotor motor (43). The external rotor motor (43) is provided with a booster wheel (21). The conductive slip ring (41) is provided on the mounting bracket (12). The conductive slip ring (41) is electrically connected to the external rotor motor (43). The conductive slip ring (41) is used to connect to an external power source.

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