Low-rotating-speed large-torque pneumatic motor
By introducing a metal filter and an adjustable pressure relief mechanism into the pneumatic motor, the safety hazards of traditional pneumatic motors under overload conditions are solved, impurity filtration and automatic pressure relief are achieved, service life is extended and safety is improved.
Patent Information
- Application Number
- CN202520844708.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-29
AI Technical Summary
Traditional pneumatic motors lack a simple and responsive automatic exhaust device when overloaded, which can lead to increased pressure and potentially cause air pipe rupture or blade damage. Existing technologies, such as manual pressure relief valves or electronic controls, have low reliability.
A low-speed, high-torque pneumatic motor was designed, equipped with an air intake mechanism and a pressure relief mechanism, including a metal filter and an adjustable pressure relief port. The metal filter filters impurities and automatically adjusts the pressure relief when the pressure is too high to prevent damage to the pneumatic motor.
It effectively prevents impurities from entering the motor, extends its service life, and quickly relieves pressure in case of overload, avoiding mechanical failure and improving safety and reliability.
Smart Images
Figure CN223868054U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pneumatic motor technology, and in particular to a low-speed, high-torque pneumatic motor. Background Technology
[0002] In traditional pneumatic motors, if the rotor stops rotating due to excessive load or obstruction by foreign objects during operation, the continuous input of compressed air can cause a sharp increase in internal air pressure, potentially leading to air pipe rupture, blade damage, or other mechanical failures. Current technologies typically employ manual pressure relief valves or pressure sensors combined with solenoid valves for protection; however, manual operation suffers from sluggish response, while electronic control is costly and unreliable. Therefore, there is an urgent need for a simple, fast-responding automatic air release device to address the safety hazards posed by pneumatic motor overload. Utility Model Content
[0003] The main objective of this invention is to provide a low-speed, high-torque pneumatic motor that can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a low-speed, high-torque pneumatic motor, including a pneumatic motor, a planetary reducer is provided on the left side of the pneumatic motor, an exhaust pipe is provided on the upper front side of the pneumatic motor, and an air intake mechanism is provided on the upper rear side of the pneumatic motor.
[0005] The air intake mechanism includes an air intake pipe, a filter pipe, a metal filter screen, a limiting ring, a sealing cap, and a pressure relief mechanism. The lower part of the air intake pipe is installed on the upper rear side of the pneumatic motor. One end of the pressure relief mechanism is fixedly connected to the middle of the air intake pipe. One end of the filter pipe is fixedly connected to the upper part of the air intake pipe. The limiting ring is installed on the upper inner side of the air intake pipe. The outer periphery of the metal filter screen is disposed inside the filter pipe. The upper end of the metal filter screen abuts against the lower part of the limiting ring. The sealing cap is disposed on the lower part of the filter pipe via a snap fastener.
[0006] Preferably, a rubber gasket is provided between the metal filter and the sealing cap.
[0007] Preferably, the pressure relief mechanism includes a pressure relief pipe, a connecting hole, a sealing block, a limiting block, a spring, a pressure relief port, and an adjusting assembly. One end of the pressure relief pipe is fixedly connected to the middle of the intake pipe, and the connecting hole is opened at the end of the pressure relief pipe near the intake pipe. The outer periphery of the sealing block is disposed inside the pressure relief pipe and the sealing block blocks the connecting hole. One end of the limiting block is fixedly connected to the middle of the sealing block, and the other end of the limiting block is slidably connected to the middle of the adjusting assembly. The spring is sleeved on the outer periphery of the limiting block and is disposed between the sealing block and the adjusting assembly. The adjusting assembly is installed at the end of the pressure relief pipe away from the intake pipe.
[0008] Preferably, a dustproof net is provided in the middle of the pressure relief port.
[0009] Preferably, the adjustment assembly includes a baffle, a slide groove, an externally threaded tube, and a knob. The knob is fixedly connected to one end of the externally threaded tube at its center. The externally threaded tube is threadedly connected to the inside of the pressure relief pipe at its outer periphery. The baffle is slidably connected to the inside of the slide groove at its outer periphery. The slide groove is formed on the inner side wall of the pressure relief pipe. The externally threaded tube is located on the side of the baffle away from the intake pipe.
[0010] Preferably, a bolt head is fixedly connected to the center of the knob.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. After the air source enters the air intake pipe, it will pass through the metal filter screen for filtration, thereby intercepting impurities in the air source. Due to the inclined setting of the metal filter screen, the gas will wash the surface of the metal filter screen, causing impurities to slide down the surface of the metal filter screen, thereby preventing impurities from clogging the upper part of the metal filter screen. This allows the upper part of the metal filter screen to filter the gas for a long time, thereby preventing impurities from entering the pneumatic motor and extending the service life of the pneumatic motor.
[0013] 2. When the internal pressure of the pneumatic motor is too high, the gas will push against the sealing block, causing the excess gas to be discharged through the connection hole and the pressure relief port. As needed, rotate the knob to move the external threaded tube inside the pressure relief tube, thereby adjusting the position of the baffle and the degree of compression of the spring by the baffle. This allows for adjustment of the automatic pressure relief value as needed, preventing excessive pressure from damaging the pneumatic motor. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of a low-speed, high-torque pneumatic motor according to the present invention.
[0015] Figure 2 This is a schematic diagram of the air intake mechanism of a low-speed, high-torque pneumatic motor according to the present invention.
[0016] Figure 3 This is a schematic diagram of the pressure relief mechanism of a low-speed, high-torque pneumatic motor according to the present invention.
[0017] Figure 4 This is a schematic diagram of the knob structure of a low-speed, high-torque pneumatic motor according to this utility model.
[0018] In the diagram: 1. Planetary reducer; 2. Pneumatic motor; 3. Exhaust pipe; 4. Intake mechanism; 401. Intake pipe; 402. Filter pipe; 403. Metal filter screen; 404. Limiting ring; 405. Sealing cover; 406. Rubber pad; 407. Pressure relief mechanism; 4071. Pressure relief pipe; 4072. Connecting hole; 4073. Sealing block; 4074. Limiting block; 4075. Spring; 4076. Pressure relief port; 4077. Dustproof net; 4078. Bracket; 4079. Slide groove; 40710. External threaded pipe; 40711. Knob; 40712. Bolt head. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] like Figure 1-4 As shown, a low-speed, high-torque pneumatic motor includes a pneumatic motor 2, a planetary reducer 1 is provided on the left side of the pneumatic motor 2, an exhaust pipe 3 is provided on the upper front side of the pneumatic motor 2, and an air intake mechanism 4 is provided on the upper rear side of the pneumatic motor 2.
[0021] In this embodiment, the air intake mechanism 4 includes an air intake pipe 401, a filter pipe 402, a metal filter screen 403, a limiting ring 404, a sealing cover 405, and a pressure relief mechanism 407. The lower part of the air intake pipe 401 is installed on the upper rear side of the pneumatic motor 2. One end of the pressure relief mechanism 407 is fixedly connected to the middle part of the air intake pipe 401. One end of the filter pipe 402 is fixedly connected to the upper part of the air intake pipe 401. The limiting ring 404 is installed on the upper inner side of the air intake pipe 401. The outer periphery of the metal filter screen 403 is disposed inside the filter pipe 402. The upper end of the metal filter screen 403 abuts against the lower part of the limiting ring 404. The sealing cover 405 is disposed on the lower part of the filter pipe 402 by a snap fastener. A rubber gasket 406 is provided between the metal filter screen 403 and the sealing cover 405.
[0022] Specifically, after the air source enters the air intake pipe 401, it will be filtered by the metal filter 403 to intercept impurities in the air source. Since the metal filter 403 is set at an angle, the gas will wash the surface of the metal filter 403, causing impurities to slide down the surface of the metal filter 403, thereby preventing impurities from clogging the upper part of the metal filter 403. This allows the upper part of the metal filter 403 to filter the gas for a long time, thereby preventing impurities from entering the pneumatic motor 2 and extending the service life of the pneumatic motor 2.
[0023] In this embodiment, the pressure relief mechanism 407 includes a pressure relief pipe 4071, a connecting hole 4072, a sealing block 4073, a limiting block 4074, a spring 4075, a pressure relief port 4076, and an adjusting assembly. One end of the pressure relief pipe 4071 is fixedly connected to the middle of the intake pipe 401. The connecting hole 4072 is opened at the end of the pressure relief pipe 4071 near the intake pipe 401. The outer periphery of the sealing block 4073 is disposed inside the pressure relief pipe 4071 and the sealing block 4073 blocks the connecting hole 4072. One end of the limiting block 4074 is fixedly connected to the middle of the sealing block 4073, and the other end of the limiting block 4074 is slidably connected to the middle of the adjusting assembly. The spring 4075 is sleeved on the outer periphery of the limiting block 4074 and is disposed on the sealing block 4073. Between the pressure relief pipe 4071 and the adjustment assembly, the adjustment assembly is installed at the end of the pressure relief pipe 4071 away from the intake pipe 401. A dustproof net 4077 is provided in the middle of the pressure relief port 4076. The adjustment assembly includes a baffle 4078, a slide groove 4079, an external threaded pipe 40710 and a knob 40711. The knob 40711 is fixedly connected to one end of the external threaded pipe 40710 in the middle. The external threaded pipe 40710 is threadedly connected to the inside of the pressure relief pipe 4071. The baffle 4078 is slidably connected to the inside of the slide groove 4079 in the outer periphery. The slide groove 4079 is opened on the inner side wall of the pressure relief pipe 4071. The external threaded pipe 40710 is located on the side of the baffle 4078 away from the intake pipe 401. A bolt head 40712 is fixedly connected to the middle of the knob 40711.
[0024] Specifically, when the internal pressure of the pneumatic motor 2 is too high, the gas will push the sealing block 4073, causing the excess gas to be discharged through the connection hole 4072 and the pressure relief port 4076. As needed, the knob 40711 is rotated, causing the external threaded tube 40710 to move inside the pressure relief tube 4071, thereby adjusting the position of the baffle 4078, and thus adjusting the degree of compression of the spring 4075 by the baffle 4078, thereby adjusting the automatic pressure relief pressure value as needed.
[0025] Working principle:
[0026] After the air source enters the air intake pipe 401, it is filtered by the metal filter 403 to intercept impurities in the air source. Due to the inclined setting of the metal filter 403, the air will wash the surface of the metal filter 403, causing impurities to slide down the surface of the metal filter 403, thereby preventing impurities from clogging the upper part of the metal filter 403. This allows the upper part of the metal filter 403 to filter the air for a long time, thus preventing impurities from entering the pneumatic motor 2 and extending the service life of the pneumatic motor 2. When the internal pressure of the pneumatic motor 2 is too high, the air will push the sealing block 4073, causing the excess air to be discharged through the connection hole 4072 and the pressure relief port 4076. As needed, the knob 40711 is rotated to move the external threaded pipe 40710 in the pressure relief pipe 4071, thereby adjusting the position of the baffle 4078 and adjusting the degree of compression of the spring 4075 by the baffle 4078. This allows the automatic pressure relief value to be adjusted as needed to prevent excessive pressure from damaging the pneumatic motor 2.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A low-speed, high-torque pneumatic motor, comprising a pneumatic motor (2), characterized in that: A planetary reducer (1) is provided on the left side of the pneumatic motor (2), an exhaust pipe (3) is provided on the upper front side of the pneumatic motor (2), and an air intake mechanism (4) is provided on the upper rear side of the pneumatic motor (2). The air intake mechanism (4) includes an air intake pipe (401), a filter pipe (402), a metal filter (403), a limiting ring (404), a sealing cover (405), and a pressure relief mechanism (407). The lower part of the air intake pipe (401) is installed on the upper rear side of the pneumatic motor (2). One end of the pressure relief mechanism (407) is fixedly connected to the middle part of the air intake pipe (401). One end of the filter pipe (402) is fixedly connected to the upper part of the air intake pipe (401). The limiting ring (404) is installed on the upper part of the inner side of the air intake pipe (401). The outer periphery of the metal filter (403) is arranged inside the filter pipe (402). The upper end of the metal filter (403) abuts against the lower part of the limiting ring (404). The sealing cover (405) is set at the lower part of the filter pipe (402) by a snap fastener.
2. The low-speed, high-torque pneumatic motor according to claim 1, characterized in that: A rubber gasket (406) is provided between the metal filter (403) and the sealing cap (405).
3. The low-speed, high-torque pneumatic motor according to claim 1, characterized in that: The pressure relief mechanism (407) includes a pressure relief pipe (4071), a connecting hole (4072), a sealing block (4073), a limiting block (4074), a spring (4075), a pressure relief port (4076), and an adjusting assembly. One end of the pressure relief pipe (4071) is fixedly connected to the middle of the air intake pipe (401). The connecting hole (4072) is opened at the end of the pressure relief pipe (4071) near the air intake pipe (401). The outer periphery of the sealing block (4073) is disposed inside the pressure relief pipe (4071). The sealing block (4073) blocks the connecting hole (4072), one end of the limiting block (4074) is fixedly connected to the middle of the sealing block (4073), and the other end of the limiting block (4074) is slidably connected to the middle of the adjusting assembly. The spring (4075) is sleeved on the outer periphery of the limiting block (4074), and the spring (4075) is disposed between the sealing block (4073) and the adjusting assembly. The adjusting assembly is installed at the end of the pressure relief pipe (4071) away from the intake pipe (401).
4. A low-speed, high-torque pneumatic motor according to claim 3, characterized in that: A dustproof net (4077) is provided in the middle of the pressure relief port (4076).
5. A low-speed, high-torque pneumatic motor according to claim 3, characterized in that: The adjustment assembly includes a baffle (4078), a slide groove (4079), an externally threaded tube (40710), and a knob (40711). The knob (40711) is fixedly connected to one end of the externally threaded tube (40710) at its center. The externally threaded tube (40710) is threadedly connected to the inside of the pressure relief tube (4071) at its outer periphery. The baffle (4078) is slidably connected to the inside of the slide groove (4079) at its outer periphery. The slide groove (4079) is opened on the inner side wall of the pressure relief tube (4071). The externally threaded tube (40710) is located on the side of the baffle (4078) away from the intake pipe (401).
6. A low-speed, high-torque pneumatic motor according to claim 5, characterized in that: A bolt head (40712) is fixedly connected to the center of the knob (40711).