Spraying device driven through swing bearing and controllable in pressure

Abstract

The utility model provides a spraying device with controllable pressure through swing bearing transmission, which comprises a motor assembly, a transmission assembly and a spraying assembly, the motor assembly drives the spraying assembly to spray through the transmission assembly, and the spraying assembly comprises a plunger rod, a suction valve, a discharge port and an air cavity. According to the transmission mode of the transmission assembly, rotation of the motor assembly is converted into front-back reciprocating swing based on the swing bearing, the plunger rod is driven to do front-back reciprocating motion in the air cavity, spraying operation is achieved, a spraying air channel is further arranged between the front end of the air cavity and the discharging port, the spraying air channel communicates the air cavity with the discharging port, and the diameter of the spraying air channel is smaller than that of the air cavity. The spraying air channel is provided with a safety return valve and a pressure regulating valve, the safety return valve is used for discharging air in the air cavity and the spraying air channel during starting and automatically releasing pressure when the pressure in the spraying air channel is too high, and the pressure regulating valve is used for regulating the spraying pressure in the spraying process, so that the spraying pressure is controllable. The spraying pressure can be controlled, and the pressure can be automatically relieved.

Description

Technical fields:

[0001] This utility model relates to the field of spraying equipment technology, and in particular to a spraying device with controllable pressure driven by a rocker bearing. Background technology:

[0002] Currently, in the field of spray coating, the reciprocating motion of a piston driven by an electric motor or pneumatic device is typically used to achieve uniform coating. However, these traditional methods have some technical challenges:

[0003] 1. Safety issues: Traditional spraying equipment involves gas pressure, but the gas pressure is unstable. Excessive pressure can easily cause the sprayed material to explode, or even injure people. At the same time, before the spraying equipment is started, there may be residual pressure inside that cannot be released. If the equipment is in a pressurized state when it is started, it can also cause the spray gun to explode, resulting in injury.

[0004] 2. Limited functionality and non-interchangeable equipment: The spraying pressure of traditional spraying equipment is not adjustable, which means that one piece of equipment can only spray one type of material or is only suitable for one spraying mode. It cannot be used universally. When there are multiple materials to be sprayed or different items need to be sprayed, the spraying pressure needs to be adjusted, which requires different spraying devices, resulting in equipment waste.

[0005] 3. Efficiency issues: Traditional drive methods are often inefficient and have high energy consumption, leading to increased equipment operating costs.

[0006] 4. Stability issues: In high-frequency reciprocating motion, traditional drive methods may cause unstable piston movement, affecting the coating quality.

[0007] 5. Maintenance costs: Traditional drive units have high maintenance costs, requiring regular replacement of wear parts, which increases operating costs.

[0008] 6. Noise issue: Traditional drive methods may generate significant noise during operation, affecting the working environment. Summary of the Invention:

[0009] To address the aforementioned technical problems, this invention provides a spraying device that is highly safe, has adjustable and controllable pressure, is versatile, highly efficient, stable, has low maintenance costs, and low noise. The device comprises a motor assembly, a transmission assembly, and a spraying assembly, all driven by a rocker bearing and featuring controllable pressure. The motor assembly drives the spraying assembly to perform the spraying operation via the transmission assembly. The spraying assembly includes a plunger rod, a suction valve, a discharge port, and an air chamber. The plunger rod can reciprocate within the air chamber and is tightly fitted against its inner wall. The suction valve is perpendicularly connected to the side wall of the air chamber, and the discharge port is located at the front end of the air chamber and is also connected to it.

[0010] The transmission component uses a rocker bearing to convert the rotation of the motor component into a back-and-forth reciprocating swing, which in turn drives the plunger rod to reciprocate within the air chamber, thereby achieving the spraying operation.

[0011] A spraying air path is also provided between the front end of the air chamber and the discharge port. The spraying air path connects the air chamber and the discharge port, and the diameter of the spraying air path is smaller than the diameter of the air chamber, thereby increasing the spraying pressure at the discharge port.

[0012] A safety reflux valve and a pressure regulating valve are provided in the spraying air circuit. The safety reflux valve and the pressure regulating valve are respectively connected to the spraying air circuit. The safety reflux valve is used to remove air from the air chamber and the inside of the spraying air circuit when the machine is turned on, and automatically depressurizes when the pressure in the spraying air circuit is too high.

[0013] The pressure regulating valve can adjust the cross-sectional area of ​​the spraying air path, thereby adjusting the spraying pressure during the spraying process, making the spraying pressure adjustable and controllable.

[0014] The transmission assembly consists of a gear, an optical shaft, and a rocking bearing. The gear meshes with the rotor teeth of the motor assembly, and the gear is assembled at the end of the optical shaft with an interference fit. The rocking bearing is fixedly mounted on the front end of the optical shaft, and the top end of the rocking bearing is connected to the end of the plunger rod.

[0015] When the motor assembly is running, the rotor teeth rotate, thereby driving the gear to rotate. The rotation of the gear drives the optical shaft and the rocker bearing on the optical shaft to rotate. The rotation of the rocker bearing drives the plunger rod to reciprocate back and forth, thereby realizing the spraying operation.

[0016] The motor assembly consists of a central rotor and a peripheral stator. The rotor teeth are fixedly mounted at the front end of the central shaft of the rotor. When the rotor rotates, it drives the rotor teeth to rotate.

[0017] A rocker arm is provided at the top of the rocker bearing. The rocker arm is connected to the end of the plunger rod. When the rocker bearing rotates, it drives the rocker arm to swing back and forth, thereby driving the plunger rod to reciprocate within the air chamber.

[0018] When the plunger rod moves backward, a negative air pressure difference is generated in the air chamber. At this time, the negative air pressure difference drives the suction valve to suck up the paint into the air chamber. When the plunger rod moves forward, a positive air pressure difference is generated in the air chamber. At this time, the positive air pressure difference sprays the paint in the air chamber through the discharge port to achieve the atomized spraying effect.

[0019] This utility model has the following advantages:

[0020] 1. Enhanced Safety: This utility model incorporates a safety reflux valve, which plays a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve opens, releasing a portion of the gas into the atmosphere, ensuring that the system pressure does not exceed the allowable value, thereby preventing accidents caused by excessive pressure.

[0021] 2. Controllable Pressure: This invention incorporates a pressure regulating valve to adjust the spraying pressure during the spraying process, making the spraying pressure controllable and applicable to different materials and items to be sprayed. This multi-functional and versatile device saves costs.

[0022] 3. Improved efficiency: The rocker bearing is directly driven by gears, which reduces energy conversion steps, improves energy utilization efficiency, and reduces operating costs.

[0023] 4. Enhanced stability: The design of the rocker bearing makes the piston movement smoother, reducing vibration and impact, thereby improving the uniformity and quality of the coating.

[0024] 5. Reduced maintenance costs: The rocker bearing has a simple structure and low wear, which reduces the frequency and cost of maintenance.

[0025] 6. Reduced noise: The rocker bearing operates with low noise, improving the working environment and meeting the noise control requirements of modern industry.

[0026] In summary, by applying rocker bearing technology to spraying equipment, this utility model not only solves the problems in traditional technology, improving equipment safety and versatility, but also brings multiple technical benefits such as increased efficiency, enhanced stability, reduced maintenance costs, and reduced noise. This is a significant advancement in the field of spraying. Attached image description:

[0027] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0028] Figure 2 This is a schematic diagram of the appearance structure of this utility model.

[0029] Figure 3 This is the front view of the rocking bearing of this utility model.

[0030] Figure 4 This is a side view of the rocker bearing of this utility model.

[0031] Attached image labels:

[0032] 1. Motor assembly; 2. Transmission assembly; 3. Spray painting assembly; 4. Gears; 5. Optical shaft.

[0033] 6. Rocking bearing; 7. Rotor teeth; 8. Rocking rod; 9. Piston rod; 10. Rotor.

[0034] 11. Stator 12. Central shaft 13. Suction valve 14. Discharge port 15. Air chamber

[0035] 16. Safety reflux valve 17. Pressure regulating valve 18. Spraying air circuit Detailed implementation method:

[0036] like Figures 1 to 4 As shown, this utility model provides a spraying device with controllable pressure via a rocker bearing transmission. It consists of three parts: a motor assembly 1, a transmission assembly 2, and a spraying assembly 3. The motor assembly 1 drives the spraying assembly 3 to perform spraying operations through the transmission assembly 2. The spraying assembly 3 includes a plunger rod 9, a suction valve 13, a discharge port 14, and an air chamber 15. The plunger rod 9 can reciprocate back and forth within the air chamber 15 and is in close contact with the inner wall of the air chamber 15. The suction valve 13 is vertically connected to and communicates with the side wall of the air chamber 15. The discharge port 14 is located at the front end of the air chamber 15 and is in communication with it.

[0037] The transmission component 2 is based on the rocker bearing 6 to convert the rotation of the motor component 10 into a back-and-forth reciprocating swing, which in turn drives the plunger rod 9 to reciprocate back and forth in the air chamber 15, thereby realizing the spraying operation.

[0038] A spraying air passage 18 is also provided between the front end of the air chamber 15 and the discharge port 14. The spraying air passage 18 connects the air chamber 15 and the discharge port 14, and the diameter of the spraying air passage 18 is smaller than the diameter of the air chamber 15, thereby increasing the spraying pressure of the discharge port 14.

[0039] The spraying air passage 18 is equipped with a safety return valve 16 and a pressure regulating valve 17. The safety return valve 16 and the pressure regulating valve 17 are respectively connected to the spraying air passage 18. The safety return valve 16 is used to remove the air inside the air chamber 15 and the spraying air passage 18 when the machine is turned on, and automatically relieves pressure when the pressure inside the spraying air passage 18 is too high. The pressure regulating valve 17 can adjust the cross-sectional area of ​​the spraying air passage 18, thereby adjusting the spraying pressure during the spraying process, so that the spraying pressure is controllable.

[0040] The transmission assembly 2 consists of a gear 4, an optical shaft 5, and a rocking bearing 6. The gear 4 meshes with the rotor teeth 7 of the motor assembly 1, and the gear 4 is assembled at the end of the optical shaft 5 by an interference fit. The rocking bearing 6 is fixedly mounted on the front end of the optical shaft 5, and the top end of the rocking bearing 6 is connected to the end of the plunger rod 9.

[0041] When the motor assembly 1 is running, the rotor teeth 7 rotate, thereby driving the gear 4 to rotate. The rotation of the gear 4 simultaneously drives the optical shaft 5 and the rocker bearing 6 on the optical shaft 5 to rotate. Simultaneously, the rotation of the rocker bearing 6 drives the plunger rod 9 to reciprocate back and forth, thereby realizing the spraying operation.

[0042] The motor assembly 1 consists of a central rotor 10 and a peripheral stator 11. The rotor teeth 7 are fixedly installed at the front end of the central shaft 12 of the rotor 10. When the rotor 10 rotates, it drives the rotor teeth 7 to rotate.

[0043] The top end of the rocker bearing 6 is provided with a rocker rod 8, which is connected to the end of the plunger rod 9. When the rocker bearing 6 rotates, it drives the rocker rod 8 to swing back and forth, thereby driving the plunger rod 9 to reciprocate within the air chamber 15.

[0044] When the plunger rod 9 moves backward, a negative air pressure difference is generated in the air chamber 15. At this time, the negative air pressure difference drives the suction valve 13 to suck up the paint into the air chamber 15. When the plunger rod 9 moves forward, a positive air pressure difference is generated in the air chamber 15. At this time, the positive air pressure difference sprays the paint in the air chamber 15 through the discharge port 14 to achieve the atomized spraying effect.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pressure-controllable spraying device driven by a swing bearing, comprising a motor assembly (1), a transmission assembly (2) and a spraying assembly (3), the motor assembly (1) drives the spraying assembly (3) to perform spraying operation through the transmission assembly (2), the spraying assembly (3) comprises a plunger rod (9), a suction valve (13), a discharge port (14) and a gas cavity (15), the plunger rod (9) can reciprocate in the gas cavity (15) and tightly contact with the inner wall of the gas cavity (15), the suction valve (13) is connected with the side wall of the gas cavity (15) perpendicularly and communicates with the side wall, the discharge port (14) is located at the front end of the gas cavity (15) and communicates with the gas cavity (15), characterized in that: the transmission assembly (2) converts the rotation of the motor assembly (1) into forward and backward reciprocating swing based on a swing bearing (6), thereby driving the plunger rod (9) to reciprocate in the gas cavity (15), and thereby realizing spraying operation; a spraying gas path (18) is further arranged between the front end of the gas cavity (15) and the discharge port (14), the spraying gas path (18) connects the gas cavity (15) and the discharge port (14) in communication, and the diameter of the spraying gas path (18) is smaller than the diameter of the gas cavity (15), thereby enhancing the spraying pressure of the discharge port (14); a safety backflow valve (16) and a pressure regulating valve (17) are arranged on the spraying gas path (18), the safety backflow valve (16) and the pressure regulating valve (17) are connected with the spraying gas path (18) in communication, the safety backflow valve (16) is used for discharging air in the gas cavity (15) and the spraying gas path (18) when starting, and automatically relieving pressure when the pressure in the spraying gas path (18) is too high, the pressure regulating valve (17) can adjust the cross-sectional area of the spraying gas path (18), thereby adjusting the spraying pressure in the spraying process, so that the spraying pressure is controllable. The transmission assembly (2) comprises a gear (4), a light shaft (5) and the swing bearing (6), the gear (4) is engaged with a rotor tooth (7) of the motor assembly (1), and the gear (4) is assembled at the end of the light shaft (5) in an interference fit manner, the swing bearing (6) is fixedly sleeved on the front end of the light shaft (5), and the top end of the swing bearing (6) is connected with the end of the plunger rod (9). When the motor assembly (1) operates, the rotor tooth (7) rotates, thereby driving the gear (4) to rotate, the gear (4) drives the light shaft (5) and the swing bearing (6) on the light shaft (5) to rotate at the same time, the swing bearing (6) drives the plunger rod (9) to reciprocate forward and backward at the same time, thereby realizing spraying operation. The motor assembly (1) comprises a central rotor (10) and a peripheral stator (11), the rotor tooth (7) is fixedly installed at the front end of a central shaft (12) of the rotor (10), and the rotor (10) drives the rotor tooth (7) to rotate when rotating.

2. The spray device driven by a swing bearing and controllable by pressure according to claim 1, characterized in that, ​ ​ 3. The spray device driven by a swing bearing and controllable by pressure according to claim 2, characterized in that, ​ 4. The spray device driven by a swing bearing and controllable by pressure according to claim 2, characterized in that, The top end of the swing bearing (6) is provided with a swing rod (8) connected with the end of the plunger rod (9), the swing bearing (6) rotates, and then drives the swing rod (8) to swing forward and backward, so as to drive the plunger rod (9) to reciprocate in the air cavity (15); When the plunger rod (9) moves backward, a negative air pressure difference is generated in the air cavity (15), at this time, the negative air pressure difference drives the material suction valve (13) to suck material, and the paint is sucked into the air cavity (15), when the plunger rod (9) moves forward, a positive air pressure difference is generated in the air cavity (15), at this time, the positive air pressure difference sprays the paint in the air cavity (15) through the discharge port (14), and the atomization spraying effect is achieved.

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