Small-sized pneumatic water grinding belt sander for grinding narrow parts

Abstract

The utility model discloses a small-sized pneumatic water-milling belt sander for polishing narrow parts, which comprises a shell, an inlet end of the shell is fixedly connected with an air inlet joint, an inlet end of the air inlet joint is communicated with an external air source, a silencer is fixedly connected between the outer side wall of the air inlet joint and the inner side wall of the shell, and the air inlet joint is communicated with the silencer. The outlet end of the air inlet connector is fixedly communicated with an air filter, an air flow adjusting valve is fixedly connected to the inner side wall of the shell, the inlet end of the air flow adjusting valve is communicated with the outlet end of the air filter, an opening and closing pin is slidably connected into the air flow adjusting valve, one end of the opening and closing pin extends out of the shell, and a trigger is hinged to the outer side wall of the shell and abuts against the opening and closing pin. A pneumatic motor is fixedly connected into the shell, and the inlet end of the pneumatic motor communicates with the outlet end of the air flow adjusting valve. According to the belt sander, a series of technical problems that a traditional belt sander is prone to vibration at a high rotating speed, noise is too large, and operation is unstable are effectively solved, and the polishing quality and the working efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of belt sander technology, specifically a small pneumatic water-cooled belt sander for grinding confined areas. Background Technology

[0002] In the field of mechanical manufacturing, with the deepening of Industry 4.0 and intelligent manufacturing concepts, the requirements for the precision and surface roughness of parts are increasing. For example, in high-end equipment manufacturing, the complex curved surfaces of key components not only require high-precision machining, but the subsequent grinding process also needs to achieve micron-level precision to ensure the efficient operation and stability of the equipment. However, existing ordinary handheld grinders, when faced with such complex curved surfaces, lack sufficient flexibility due to their structural design being mostly based on traditional rigid frames. This makes it difficult to achieve a perfect fit with the curved surface, resulting in uneven pressure distribution during grinding, easily leading to local over-grinding or under-grinding, seriously affecting the consistency of product quality. Therefore, those skilled in the art provide a small pneumatic water-cooled belt sander for grinding confined areas to solve the problems mentioned in the background art. Utility Model Content

[0003] The purpose of this invention is to provide a small pneumatic water-jetting belt sander for grinding confined spaces, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A small pneumatic water-cooled belt sander for grinding confined spaces includes a housing. An air inlet connector is fixedly connected to the inlet end of the housing, and the inlet end of the air inlet connector is connected to an external air source. A silencer is fixedly connected between the outer wall of the air inlet connector and the inner wall of the housing. An air filter is fixedly connected to the outlet end of the air inlet connector. An air flow regulating valve is fixedly connected to the inner wall of the housing, and the inlet end of the air flow regulating valve is connected to the outlet end of the air filter. An opening and closing pin is slidably connected inside the air flow regulating valve, and one end of the opening and closing pin extends outside the housing. A trigger is hinged to the outer wall of the housing, and the trigger abuts against the opening and closing pin. A pneumatic motor is fixedly connected inside the housing, and the inlet end of the pneumatic motor is connected to the outlet end of the air flow regulating valve.

[0006] Furthermore, a gearbox is fixedly connected to the upper surface of the housing, and a rotor is fixedly connected to the input end of the gearbox. One end of the rotor is fixedly connected to the end of the pneumatic motor blade shaft.

[0007] Furthermore, the upper surface of the gearbox is rotatably connected to the drive shaft, the end of the drive shaft is fixedly connected to the output end of the gearbox, the top of the drive shaft is fixedly connected to the drive wheel, and the upper surface of the gearbox is also rotatably connected to the driven wheel.

[0008] Furthermore, a support arm is rotatably connected to the surface of the gearbox, and a driven wheel is rotatably connected to the surface of the support arm.

[0009] Furthermore, a water baffle is fixedly connected to the side wall of the gearbox, and a locking knob is rotatably connected to the side wall of the water baffle, with the shaft end of the locking knob abutting against the side wall of the support arm.

[0010] Furthermore, a water pipe is fixedly connected to the side wall of the gearbox, with the inlet end of the water pipe connected to an external water source and the outlet end of the water pipe extending into the water baffle cover.

[0011] By adopting the above technical solution

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The installation of silencer and air filter not only reduces intake noise and improves the working environment, but also filters air impurities, extends the service life of pneumatic motor, and improves equipment reliability. By adjusting the air flow regulating valve through the trigger and the opening and closing pin, the operator can flexibly control the speed and output power of the pneumatic motor, thereby improving work efficiency and grinding quality.

[0014] 2. The gearbox ensures stable power transmission and guarantees the stability of the grinding operation. The cooperation of the support arm, driven wheel, and tightening knob allows for flexible adjustment of the belt tension, facilitating belt replacement to meet different grinding needs. Water spraying from the water pipe provides cooling and lubrication, reducing wear on the workpiece and belt, suppressing dust generation, and protecting the health of operators. In addition, its compact design is suitable for grinding in confined spaces, expanding its application range. It effectively solves a series of technical problems of traditional belt sanders, such as vibration, excessive noise, and unstable operation at high speeds, significantly improving grinding quality and work efficiency. It provides a brand-new approach and technical reference for the design and development of similar products in the industry. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a small pneumatic water-jetting belt sander for grinding confined areas;

[0016] Figure 2 A side view of a small pneumatic water sander belt machine used for grinding confined spaces;

[0017] Figure 3 A front sectional view of a small pneumatic water-jetting belt sander used for grinding confined areas;

[0018] Figure 4 This is a side sectional view of a small pneumatic water sander belt machine used for grinding confined spaces.

[0019] In the diagram: 1. Housing; 2. Silencer; 3. Air inlet connector; 4. Air filter; 5. Air flow regulating valve; 6. Opening / closing pin; 7. Trigger; 8. Pneumatic motor; 9. Rotor; 10. Gearbox; 11. Water baffle; 12. Support arm; 13. Drive shaft; 14. Drive wheel; 15. Driven and driven wheel; 16. Tightening knob; 17. Fixed and driven wheel; 18. Water pipe. Detailed Implementation

[0020] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Please see Figures 1-4 This utility model provides an embodiment of a small pneumatic water-cooled belt sander for grinding confined areas. It includes a housing 1, an air inlet connector 3 fixedly connected to the inlet end of the housing 1, the inlet end of the air inlet connector 3 being connected to an external air source, a silencer 2 fixedly connected between the outer wall of the air inlet connector 3 and the inner wall of the housing 1, an air filter 4 fixedly connected to the outlet end of the air inlet connector 3, an air flow regulating valve 5 fixedly connected to the inner wall of the housing 1, the inlet end of the air flow regulating valve 5 being connected to the outlet end of the air filter 4, an opening / closing pin 6 slidably connected inside the air flow regulating valve 5, one end of the opening / closing pin 6 extending outside the housing 1, and a trigger 7 hinged to the outer wall of the housing 1, the trigger 7 abutting against the opening / closing pin 6. A pneumatic motor 8 is fixedly connected inside the housing 1, and the inlet end of the pneumatic motor 8 is connected to the outlet end of the air flow regulating valve 5. The silencer 2 effectively reduces the noise generated during air intake, improves the working environment of the operator, and reduces the impact of noise on the surrounding environment. The air filter 4 can filter the incoming air, prevent impurities and dust from entering the pneumatic motor 8, extend the service life of the pneumatic motor 8, and improve the reliability and stability of the equipment. The air flow regulating valve 5 is controlled by the trigger 7 and the opening and closing pin 6. The operator can easily adjust the speed and output power of the pneumatic motor 8 to achieve flexible control of the grinding operation, thereby improving work efficiency and grinding quality.

[0022] In this embodiment, a gearbox 10 is fixedly connected to the upper surface of the housing 1. A rotor 9 is fixedly connected to the input end of the gearbox. One end of the rotor 9 is fixedly connected to the blade shaft end of the pneumatic motor 8. A drive shaft 13 is rotatably connected to the upper surface of the gearbox 10. The shaft end of the drive shaft 13 is fixedly connected to the output end of the gearbox 10. A drive wheel 14 is fixedly connected to the top end of the drive shaft 13. A driven wheel 17 is also rotatably connected to the upper surface of the gearbox 10. A support arm 12 is rotatably connected to the surface of the gearbox 10. A driven wheel 15 is rotatably connected to the surface of the gearbox 10. A water baffle 11 is fixedly connected to the side wall of the gearbox 10. A locking knob 16 is rotatably connected to the side wall of the water baffle 11, and the shaft end of the locking knob 16 abuts against the side wall of the support arm 12. A water pipe 18 is fixedly connected to the side wall of the gearbox 10. The inlet end of the water pipe 18 is connected to an external water source, and the outlet end of the water pipe 18 extends into the water baffle 11. Compressed air is used as the power source. When the compressed air enters the sander through the air inlet connector 3, it first passes through an air filter. The filter 4 removes impurities and moisture. Compressed air then enters the pneumatic motor 8, driving the internal blades to rotate the output shaft. This rotation is transmitted to the gearbox 10 via the rotor 9. After speed change and torque amplification by the gears in the gearbox 10, the air is transmitted to the drive wheel 14. Driven by the power, the drive wheel 14 begins to rotate. Since the sanding belt is fitted onto the drive wheel 14 and the driven wheel, and there is friction between the sanding belt and the drive wheel 14, the rotation of the drive wheel 14 causes the sanding belt to make a circular motion. The water pipe 18 sprays water onto the grinding area, which not only reduces the heat generated during grinding, reduces wear on the workpiece and sanding belt, and extends their service life, but also effectively suppresses dust generation, improves the working environment, and protects the health of operators. The power transmission is stable. Through the cooperation of the support arm 12, the driven wheel 15, and the locking knob 16, the tension of the water-jetting sanding belt can be easily adjusted to adapt to different grinding needs. It also facilitates the replacement and installation of the water-jetting sanding belt.

[0023] During operation, compressed air from an external air source enters through the air inlet connector 3, the silencer 2 reduces noise, and the air filter 4 filters impurities before entering the air flow regulating valve 5. The operator pulls the trigger 7 to push the opening and closing pin 6, adjusting the air flow into the pneumatic motor 8 and controlling its speed and power. The compressed air drives the blades of the pneumatic motor 8 to rotate, and the blade shaft drives the rotor 9, transmitting power to the gearbox 10. After speed change, it drives the drive shaft 13 and drive wheel 14 to rotate. The drive wheel 14, the fixed driven wheel 17, and the driven wheel 15 together drive the water-grinding belt. The position of the support arm 12 and the driven wheel 15 can be adjusted by tightening the knob 16 to change the tension of the sanding belt. At the same time, external water enters the water baffle 11 through the water pipe 18, spraying water on the grinding part to cool, lubricate, and reduce dust.

[0024] The silencer 2 and air filter 4 reduce intake noise, improve the working environment, filter air impurities, extend the service life of the pneumatic motor 8, and improve equipment reliability. The airflow regulating valve 5, adjusted by the trigger 7 and the opening / closing pin 6, allows operators to flexibly control the speed and output power of the pneumatic motor 8, improving work efficiency and grinding quality. The gearbox 10 ensures stable power transmission and guarantees the stability of the grinding operation. The cooperation of the support arm 12, driven wheel 15, and locking knob 16 allows for flexible adjustment of the sanding belt tension, facilitating belt replacement to meet different grinding needs. The water pipe 18 sprays water for cooling and lubrication, reducing wear on the workpiece and sanding belt, suppressing dust generation, and protecting operator health. Furthermore, its compact design is suitable for grinding in confined spaces, expanding its application range. It effectively solves a series of technical problems associated with traditional belt sanders, such as vibration, excessive noise, and unstable operation at high speeds, significantly improving grinding quality and work efficiency. This provides a new approach and technical reference for the design and development of similar products in the industry.

[0025] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A small pneumatic water abrasive belt sander for use in small areas, characterized in that, The utility model provides an air filter, including shell (1), shell (1) inlet end fixedly connected with air inlet joint (3), air inlet joint (3) inlet end is connected with outside gas source, and the fixedly connected with silencer (2) between air inlet joint (3) outside wall and shell (1) inner side wall, and air inlet joint (3) outlet end fixedly communicated with air filter (4), and shell (1) inner side wall fixedly connected with air flow regulating valve (5), and air flow regulating valve (5) inlet end is communicated with air filter (4) outlet end, and air flow regulating valve (5) inner slidingly connected with open-close pin (6), and open-close pin (6) one end extends to shell (1) outside, and shell (1) outside wall is hinged with trigger (7), and trigger (7) with open-close pin (6) abuts, and shell (1) inside fixedly connected with pneumatic motor (8), and pneumatic motor (8) inlet end is communicated with air flow regulating valve (5) outlet end.

2. A compact pneumatic water abrasive belt sander for use in tight spaces according to claim 1, characterized in that, The upper surface of the shell (1) is fixedly connected with a gear box (10), the input end of the gear box (10) is fixedly connected with a rotor (9), one end of the rotor (9) is fixedly connected with the blade shaft end of the pneumatic motor (8).

3. A compact pneumatic water abrasive belt sander for use in tight spaces according to claim 2, characterized in that, The upper surface of the gear box (10) is rotatably connected with a driving shaft (13), the shaft end of the driving shaft (13) is fixedly connected with the output end of the gear box (10), the top end of the driving shaft (13) is fixedly connected with a driving wheel (14), and the upper surface of the gear box (10) is also rotatably connected with a fixed driven wheel (17).

4. A compact pneumatic water abrasive belt sander for use in tight spaces according to claim 2, wherein The surface of the gear box (10) is rotatably connected with a supporting arm (12), and the surface of the supporting arm (12) is rotatably connected with a driven wheel (15).

5. A compact pneumatic water abrasive belt sander for use in tight spaces according to claim 2, wherein, The side wall of the gear box (10) is fixedly connected with a water baffle cover (11), the side wall of the water baffle cover (11) is rotatably connected with a tightening knob (16), and the shaft end of the tightening knob (16) abuts against the side wall of the supporting arm (12).

6. A compact pneumatic wet abrasive belt sander for use in tight spaces according to claim 2, wherein, The side wall of the gear box (10) is fixedly connected with a water pipe (18), the inlet end of the water pipe (18) is communicated with an external water source, and the outlet end of the water pipe (18) extends into the water baffle cover (11).

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