Pneumatic motor

Abstract

The utility model discloses a pneumatic motor, which belongs to the field of pneumatic equipment and comprises a shell, and an accommodating cavity and two flow channels for air intake and air exhaust are arranged in the shell; the inner sleeve is arranged in the shell, two first air cavities are formed in the bottom of the outer wall of the inner sleeve, a vent hole is formed in the top of the outer wall of the inner sleeve, and the two first air cavities communicate with the two flow channels correspondingly; the end face of the inner sleeve is provided with a second air cavity. An air guide hole is formed in the inner sleeve and communicates with the first air cavity and the second air cavity. And the rotor is eccentrically arranged, can rotate in the inner sleeve and penetrates through the shell. According to the pneumatic motor provided by the utility model, by optimizing the position of the air inlet / outlet, improving the structure and canceling additional bearings and silencers, the problems of the traditional pneumatic motor are effectively solved, and the pneumatic motor has remarkable advantages in the aspects of improving the power, simplifying the assembly, reducing the cost and the like.

Description

A pneumatic motor Technical Field

[0001] This utility model belongs to the field of pneumatic equipment, and specifically relates to a pneumatic motor. Background Technology

[0002] A pneumatic motor is a power device that converts the pressure energy of compressed air into rotational mechanical energy. It uses compressed air to drive components to output power through structures such as blades, pistons, or gears.

[0003] Traditional pneumatic motors suffer from numerous problems in practical applications. Their inlet / outlet positions are often poorly designed, typically located on the motor end face and guided into the motor via a flow channel to drive the fan blades. This method results in significant airflow resistance during transmission, leading to substantial energy loss and limited power output. Furthermore, during assembly, traditional pneumatic motors require additional bearings for reinforcement to ensure the stability of external transmission gears and gears on the blower. This not only increases assembly complexity and cost but also makes the overall structure more cumbersome. Additionally, traditional pneumatic motors often require silencers to reduce noise, further increasing the number of components and equipment cost. To address these issues, a new type of pneumatic motor is proposed. Summary of the Invention

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a pneumatic motor with the advantages of increased power and reduced cost.

[0005] To achieve the above objectives, this utility model provides a pneumatic motor, including a housing, the housing having an accommodating cavity and two flow channels for air intake and exhaust respectively;

[0006] The inner sleeve is set in the shell. Two air chambers are opened at the bottom of the outer wall of the inner sleeve and a vent is opened at the top of the outer wall. The two air chambers are connected to two flow channels respectively. An air chamber is opened at the end face of the inner sleeve. An air guide hole is opened inside the inner sleeve, which is connected to air chambers one and two air chambers respectively.

[0007] The rotor is eccentrically positioned and rotatable within the inner sleeve and penetrates the housing. Several blades with equal spacing are slidably embedded in its outer wall. One end of the rotor has a drive wheel located on the outer wall of the housing.

[0008] Two pipe fittings are connected to two flow channels respectively, and the pipe fittings are detachably connected to the flow channels by threads.

[0009] Furthermore, the housing includes a main body and an end cap, which are detachably connected by a screw; the outer wall of the main body has a downwardly extending protrusion, and two flow channels are respectively opened on the protrusion.

[0010] Furthermore, sealed bearings are embedded in the main body and end caps respectively, and the rotor has shafts at both ends. The two shafts are inserted into the corresponding sealed bearings to enable the rotor to rotate in the inner sleeve.

[0011] Furthermore, the outer wall of the main body has an upwardly extending protrusion 2, and a cover plate is detachably installed on the top of the protrusion 2 via a screw 2; a boss is formed inside the protrusion 2 extending inward; sound insulation cotton is installed on the boss inside the protrusion 2, and a sound-absorbing hole is opened on the cover plate.

[0012] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0013] The pneumatic motor of this invention effectively solves the problems of traditional pneumatic motors by optimizing the position of the air inlet / outlet, improving the structure, and eliminating the need for additional bearings and silencers. It has significant advantages in terms of power increase, simplified assembly, and cost reduction. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model;

[0015] Figure 2 is a schematic diagram of the structure of this utility model from a bottom view;

[0016] Figure 3 is a schematic diagram of the axial cross-sectional structure of this utility model;

[0017] Figure 4 is a schematic diagram of the radial cross-sectional structure of this utility model;

[0018] Figure 5 is a schematic diagram of the inner sleeve structure of this utility model.

[0019] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Housing; 11. Main body; 12. End cap; 13. Screw one; 14. Protrusion one; 15. Protrusion two; 16. Screw two; 17. Cover plate; 18. Boss; 2. Flow channel; 3. Inner sleeve; 31. Air chamber one; 32. Vent hole; 33. Air chamber two; 34. Air guide hole; 4. Rotor; 41. Blade; 42. Drive wheel; 43. Shaft; 5. Pipe joint; 6. Sealed bearing; 7. Sound insulation cotton; 8. Noise-absorbing hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4. This utility model provides a pneumatic motor, including a housing 1, an inner sleeve 3, a rotor 4, blades 41, a pipe joint 5, a sealed bearing 6, a first screw 13, a second screw 16, a cover plate 17, and sound insulation cotton 7.

[0022] Specifically, referring to Figures 2-4, the housing 1 includes a main body 11, which has an internal cavity for accommodating an inner sleeve 3, and the inner sleeve 3 for receiving the rotor 4 and blades 41. The outer wall of the main body 11 has a downwardly extending protrusion 14, and two flow channels 2 for air intake and exhaust are respectively opened on the protrusion 14. This design makes the air inlet / outlet located at the bottom, optimizing the airflow path. The main body 11 and the end cover 12 are detachably connected by a screw 13, which facilitates installation and disassembly, and together constitute the housing 1. Sealed bearings 6 are respectively embedded on the main body 11 and the end cover 12 to provide support and sealing for the rotation of the rotor 4, ensuring the stability and sealing of the rotor 4 rotation and reducing gas leakage.

[0023] Specifically, referring to Figure 5, the bottom of the outer wall of the inner sleeve 3 has two air chambers 31 and the top of the outer wall has a vent hole 32. The vent hole 32 is used to discharge a certain amount of high-pressure gas to achieve a noise reduction effect. The two air chambers 31 are connected to the two flow channels 2 respectively. The end face of the inner sleeve 3 has an air chamber 33. The inner sleeve 3 has a guide hole 34, which is connected to the air chambers 31 and 33 respectively. When the external gas enters the air chamber 31 through the flow channel 2, it can enter the air chamber 33 through the guide hole 34 to provide kinetic energy for the rotation of the rotor 4.

[0024] Specifically, referring to Figures 3-4, the rotor 4 is in an biased state and is rotatably disposed in the inner sleeve 3 and can penetrate the housing 1. Several blades 41 with equal intervals are slidably embedded on its outer wall, which are used to drive the rotor 4 to rotate under the push of high pressure gas. One end of the rotor 4 has a drive wheel 42 located on the outer wall of the housing 1 for transmitting power. Both ends of the rotor 4 have shafts 43, and the two shafts 43 are respectively inserted into the corresponding sealed bearings 6 to realize the rotatable connection of the rotor 4 in the inner sleeve 3.

[0025] Specifically, referring to Figure 3, the two pipe fittings 5 ​​are respectively connected to the two flow channels 2, and the threads are used to achieve a detachable connection with the flow channels 2, which facilitates connection with external air circuits and also makes disassembly and maintenance convenient.

[0026] Specifically, referring to Figures 2-4, the outer wall of the main body 11 also has an upwardly extending protrusion 15. The top of the protrusion 15 is detachably provided with a cover plate 17 via a screw 16. The cover plate 17 has a sound-absorbing hole 8. The protrusion 15 extends inward to form a boss 18 for installing sound insulation cotton 7. After the sound insulation cotton 7 is installed on the boss 18, it can reduce the noise when the pneumatic motor is working.

[0027] Working principle

[0028] When high-pressure gas enters the corresponding flow channel 2 through one of the pipe joints 5, and then flows into the corresponding air chamber 31, it can enter the air chamber 33 through the guide hole 34. Then, the high-pressure gas pushes the blades 41 on the outer wall of the rotor 4. Since the blades 41 are arranged at equal intervals, under the action of gas pressure, the blades 41 drive the rotor 4 to rotate around its axis. When the rotor 4 rotates, the drive wheel 42 at the other end rotates accordingly, thereby transmitting power to external equipment, such as a pneumatic blower.

[0029] As the rotor 4 rotates, the blades 41 slide on the outer wall of the rotor 4. After completing one working cycle, the gas is discharged through the second air chamber 33, the air guide hole 34, the first air chamber 31, the flow channel 2 and the corresponding pipe joint 5 on the other side. Since the inlet / outlet is located at the bottom, compared with the inlet / outlet of the traditional pneumatic motor located at the end face, the airflow is smoother, the resistance is reduced, the energy loss is reduced, and the power is improved.

[0030] During the rotation of rotor 4, sealed bearing 6 supports and seals the shaft 43 of rotor 4, ensuring stable rotation of rotor 4, reducing gas leakage, and improving the working efficiency of pneumatic motor; the sound insulation cotton 7 inside protrusion 2 15 can absorb the noise generated when pneumatic motor is working. Although there is no need to install a traditional silencer, it can still reduce noise to a certain extent and meet the usage requirements.

[0031] Beneficial effects

[0032] No additional bearing reinforcement required: In existing technologies, pneumatic motors, due to their protruding end face structure, can only use external reduction gears during assembly and use. This necessitates the use of additional bearings to reinforce the external transmission gears. However, the pneumatic motor in this technical solution, through optimized connection end face design, can use a built-in single-stage planetary reduction gear. This is not only more suitable for high torque applications, but also ensures gear stability during power transmission, eliminating the need for additional bearing reinforcement.

[0033] No silencer required: Traditional pneumatic motors typically require silencers to reduce noise, increasing the number of components and equipment costs. This technical solution adds an upper exhaust, allowing gas to pass through the vent 32 and the sound insulation cotton 7 inside the protrusion 2 15 and finally exit from the silencer hole 8, effectively absorbing noise. Under certain noise requirements, no additional silencer is needed, reducing the number of components and lowering costs.

[0034] Power Boost:

[0035] The inlet / outlet has been moved to the bottom, resulting in a 20% increase in power compared to pneumatic motors used in windmills: The inlet / outlet position of traditional pneumatic motors used in windmills is poorly designed, resulting in high airflow resistance and significant energy loss. This technology moves the inlet / outlet to the bottom, optimizing the airflow path and allowing high-pressure gas to enter the pneumatic motor more smoothly to drive the blades 41, reducing energy loss and thus increasing the power by 20% compared to pneumatic motors used in windmills.

[0036] The top-mounted exhaust port increases power by 50% compared to traditional pneumatic motors: The design of the exhaust port position of traditional pneumatic motors has defects, resulting in insufficient exhaust and affecting the working efficiency of the pneumatic motor. This technology sets the exhaust port at the top, combined with the design of the air inlet / outlet at the bottom, so that the airflow in the motor is more reasonable, the air intake and exhaust are smoother, and energy loss is greatly reduced. Compared with traditional pneumatic motors, the power can be increased by 50%.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic motor, characterized in that, The device includes a housing (1), which has an internal cavity and two flow channels (2) for air intake and exhaust respectively; an inner sleeve (3), which is located in the housing (1), with two air chambers (31) at the bottom of the outer wall and a vent hole (32) at the top of the outer wall, and the two air chambers (31) are connected to the two flow channels (2) respectively; an air chamber (33) is located on the end face of the inner sleeve (3); a guide hole (34) is located inside the inner sleeve (3), and the guide hole (34) is connected to the air chambers (31) and (33) respectively; a rotor (4), which is eccentrically positioned and rotatable in the inner sleeve (3) and penetrates the housing (1), and has several blades (41) that are equidistantly spaced on its outer wall; a drive wheel (42) located on the outer wall of the housing (1) at one end of the rotor (4); and two pipe joints (5), which are connected to the two flow channels (2) respectively, and the pipe joints (5) are detachably connected to the flow channels (2) by means of threads.

2. The pneumatic motor according to claim 1, characterized in that, The housing (1) includes a main body (11) and an end cap (12), which are detachably connected by a screw (13); the outer wall of the main body (11) has a protrusion (14) extending downward, and two flow channels (2) are respectively opened on the protrusion (14).

3. The pneumatic motor according to claim 2, characterized in that, Sealed bearings (6) are embedded in the main body (11) and end cap (12), and the rotor (4) has shafts (43) at both ends. The two shafts (43) are inserted into the corresponding sealed bearings (6) so that the rotor (4) can rotate in the inner sleeve (3).

4. The pneumatic motor according to claim 1, characterized in that, The outer wall of the main body (11) has an upwardly extending protrusion (15), and a cover plate (17) is detachably installed on the top of the protrusion (15) via a screw (16); a boss (18) is formed inside the protrusion (15); sound insulation cotton (7) is installed on the boss (18) inside the protrusion (15), and a sound-absorbing hole (8) is opened on the cover plate (17).

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