Air pressure adjusting mechanism and paint stirring device with same

Abstract

The utility model provides an air pressure adjusting mechanism and a paint stirring device with the same. A first end of the air pressure adjusting mechanism is communicated with the interior of a shell of the paint stirring device, and a second end of the air pressure adjusting mechanism is communicated with the atmosphere. The mechanism comprises a pipe body, and a first pipeline and a second pipeline are arranged in the pipe body; a first sealing cover is arranged at the top of the first pipeline, a first spring is arranged in the first pipeline, and the first spring is connected with the first sealing cover; a second sealing cover is arranged at the bottom of the second pipeline, a second spring is arranged in the second pipeline, and the second spring is connected with the second sealing cover. When the air pressure in the shell of the paint stirring device rises to a certain value, the first sealing cover is jacked open by the first spring, gas in the paint stirring device is exhausted, and shell explosion is avoided. And when the air pressure in the shell of the paint stirring device is reduced to a certain value, a second spring pushes open a second sealing cover, so that air outside the shell flows into the shell, and the shell is prevented from being shrunken.

Description

Technical Field

[0001] The utility model relates to the technical field of air pressure regulating devices, in particular to an air pressure regulating mechanism and a paint stirring device having the same. Background Art

[0002] Electrostatic spraying refers to a coating method that uses the principle of corona discharge to make the atomized paint negatively charged under the action of a high-voltage DC electric field, and the atomized paint is adsorbed on the positively charged substrate surface and discharged. During the manufacturing process of electrostatic spray materials, the paint needs to be stirred and blended to ensure the spraying effect of the paint.

[0003] When a paint stirring device is stirring paint, the internal air pressure will change. Existing paint stirring devices cannot adjust the air pressure difference between the inside and outside, and cannot control the air pressure difference within a certain range. When the air pressure inside the paint stirring device is too high, there is a hidden danger of explosion. When the air pressure inside the paint stirring device is too low, the shell will become deflated under the action of air pressure.

[0004] Therefore, there is an urgent need for an air pressure regulating mechanism that can regulate the air pressure inside the paint stirring device to prevent the shell from exploding and deflation. Utility Model Content

[0005] In order to overcome the problems existing in the related art, one of the purposes of the utility model is to provide an air pressure regulating mechanism, which can adjust the air pressure inside the shell of the paint stirring device to prevent the shell from exploding and deflation.

[0006] A gas pressure regulating mechanism, a first end of which is connected to the inside of a shell of a paint stirring device, and a second end of which is connected to the atmosphere, the mechanism comprising a tube body, a first pipe and a second pipe being arranged in the tube body; a first sealing cover being arranged on the top of the first pipe, a first spring being arranged in the first pipe, and the first spring being connected to the first sealing cover; a second sealing cover being arranged on the bottom of the second pipe, a second spring being arranged in the second pipe, and the second spring being connected to the second sealing cover.

[0007] Since the two ends of the air pressure regulating mechanism are connected to the inside of the shell of the paint stirring device and the atmosphere respectively, when the air pressure inside the shell of the paint stirring device rises to a certain value, the air pressure inside the shell of the paint stirring device is greater than the external atmospheric pressure. At this time, the first spring is stretched under the action of the internal and external air pressure difference, and the first spring pushes open the first sealing cover, so that the gas inside the paint stirring device is discharged through the first pipeline, thereby reducing the air pressure inside the paint stirring device and preventing the shell from exploding. When the air pressure inside the shell of the paint stirring device is reduced to a certain value, the air pressure inside the shell of the paint stirring device is less than the external atmospheric pressure. At this time, the second spring is stretched under the action of the internal and external air pressure difference, and the second spring pushes open the second sealing cover, so that the air outside the shell flows into the shell through the second pipeline, so that the air pressure inside the shell increases, and the shell is prevented from being deflated under the action of the air pressure.

[0008] In a preferred technical solution of the utility model, the fixed end of the first spring is connected to the side wall of the first pipe, and the fixed end of the second spring is connected to the side wall of the second pipe.

[0009] The fixed end of the first spring is fixed to the side wall of the first pipe, and the fixed end of the second spring is fixed to the side wall of the second pipe. When the air pressure inside the shell of the paint stirring device is greater than the external atmospheric pressure, the first spring is stretched, and one end of the first spring connected to the first sealing cover applies an upward force to the first sealing cover, thereby ejecting the first sealing cover. When the air pressure inside the shell of the paint stirring device is less than the external atmospheric pressure, the second spring is stretched, and one end of the second spring connected to the second sealing cover applies a downward force to the second sealing cover, thereby ejecting the second sealing cover.

[0010] In a preferred technical solution of the utility model, a mounting plate is provided in the tube body, and the first pipeline and the second pipeline are penetrated through the mounting plate.

[0011] The first pipeline and the second pipeline are fixed by using the mounting plate to prevent the first pipeline and the second pipeline from being displaced in the pipeline body when the air pressure inside the shell of the paint stirring device changes.

[0012] In a preferred technical solution of the present utility model, the bottom of the first pipe is communicated with the inner cavity of the pipe body, and the top of the second pipe is communicated with the inner cavity of the pipe body.

[0013] The inner cavity of the tube body is connected to the inside of the shell of the paint stirring device. When the air pressure inside the shell of the paint stirring device is greater than the external atmospheric pressure, the gas inside the shell of the paint stirring device flows into the inner cavity of the tube body, then flows into the first pipe from the inner cavity of the tube body, and finally is discharged to the outside atmosphere from the top of the first pipe. When the air pressure inside the shell of the paint stirring device is less than the external atmospheric pressure, the external gas flows into the inner cavity of the tube body, then flows into the second pipe from the inner cavity of the tube body, and finally flows into the shell of the paint stirring device from the bottom of the second pipe.

[0014] The second purpose of the utility model is to provide a paint stirring device, including a cover plate, the cover plate is provided with the above-mentioned air pressure regulating mechanism; the cover plate is connected to the shell, the shell and the cover plate enclose a stirring chamber, and the stirring chamber is provided with a stirring mechanism.

[0015] The stirring mechanism stirs the paint in the stirring chamber. During the stirring process, the temperature in the stirring chamber will rise. As the amount of paint in the stirring chamber is constantly changing, the space occupied by the gas in the stirring chamber is also constantly changing. Under the combined effect of the temperature change and the change in the space occupied by the gas in the stirring chamber, the air pressure in the stirring chamber will change. When the air pressure in the stirring chamber is too high or too low, the air pressure regulating mechanism will discharge the gas in the stirring chamber to the outside atmosphere, or allow the outside gas to flow into the stirring chamber, thereby regulating the air pressure in the stirring chamber.

[0016] In a preferred technical solution of the present utility model, the stirring mechanism includes a first stirrer and a second stirrer, the first stirrer is connected to the cover plate, and the second stirrer is connected to the bottom of the shell.

[0017] By using the first stirrer and the second stirrer which are arranged opposite to each other to stir the paint, the efficiency of stirring the paint can be improved.

[0018] In a preferred technical solution of the utility model, the cover plate is connected to a feed pipe, and the bottom of the shell is connected to a discharge pipe; the feed pipe and the discharge pipe are both connected to the stirring chamber.

[0019] The paint enters the stirring chamber from the feed pipe, and falls near the second stirrer after being stirred by the first stirrer. The second stirrer stirs the paint stirred by the first stirrer again. After two stirrings, the uniformity of the stirred paint can be improved.

[0020] In a preferred technical solution of the utility model, a jacket is provided on a side of the shell away from the stirring chamber, and a circulating water flow channel is opened in the jacket.

[0021] The jacket covers the side of the shell away from the stirring chamber, and there is cooling liquid in the circulating water flow channel inside the jacket, which can reduce the temperature of the shell.

[0022] In a preferred technical solution of the utility model, a side of the jacket close to the cover plate is connected to a water inlet pipe, and a side of the jacket opposite to the cover plate is connected to a water outlet pipe.

[0023] The coolant flows into the jacket from the water inlet pipe, flows through the circulating water channel inside the jacket, and finally flows out from the water outlet pipe. The coolant flowing out from the water outlet pipe is collected, and the collected coolant flows into the jacket from the water inlet pipe again, thereby realizing the recycling of the coolant.

[0024] In a preferred technical solution of the utility model, the first agitator includes a first motor and a first stirring blade, the first motor is arranged on the top of the cover plate, and the first stirring blade is located in the stirring chamber; the driving shaft of the first motor extends into the stirring chamber, and the first stirring blade is connected to the driving shaft of the first motor.

[0025] When the first motor is working, the driving shaft of the first motor rotates, driving the first stirring blade to rotate, and the first stirring blade stirs the paint. By adjusting the power of the first motor, the speed of the first stirring blade can be adjusted, thereby adjusting the speed of stirring the paint.

[0026] The beneficial effects of the utility model are:

[0027] The utility model provides an air pressure regulating mechanism comprising a tube body, wherein a first pipe and a second pipe are arranged in the tube body. A first sealing cover is arranged at the top of the first pipe, a first spring is arranged in the first pipe, and the first spring is connected to the first sealing cover. A second sealing cover is arranged at the bottom of the second pipe, a second spring is arranged in the second pipe, and the second spring is connected to the second sealing cover. The first end of the air pressure regulating mechanism is communicated with the inside of the shell of the paint stirring device, and the second end is communicated with the atmosphere. When the air pressure inside the shell of the paint stirring device rises to a certain value, the air pressure inside the shell of the paint stirring device is greater than the external atmospheric pressure. At this time, the first spring is stretched under the action of the internal and external air pressure difference, and the first spring pushes open the first sealing cover, so that the gas inside the paint stirring device is discharged through the first pipe, thereby reducing the air pressure inside the paint stirring device and avoiding explosion of the shell. When the air pressure inside the shell of the paint stirring device is reduced to a certain value, the air pressure inside the shell of the paint stirring device is less than the external atmospheric pressure. At this time, the second spring is stretched under the action of the internal and external air pressure difference, and the second spring pushes open the second sealing cover, so that the air outside the shell flows into the shell through the second pipe, so that the air pressure inside the shell increases, preventing the shell from being deflated under the action of air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the air pressure regulating mechanism provided by the utility model;

[0029] Figure 2It is a structural schematic diagram of the paint stirring device provided by the utility model;

[0030] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0031] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0032] Figure numerals: 1. air pressure regulating mechanism; 11. tube body; 12. first pipeline; 13. second pipeline; 14. first sealing cover; 15. second sealing cover; 16. first spring; 17. second spring; 18. mounting plate; 2. cover plate; 3. shell; 4. stirring mechanism; 41. first agitator; 411. first motor; 412. first stirring blade; 42. second agitator; 421. second motor; 422. second stirring blade; 5. feed pipe; 6. discharge pipe; 7. jacket; 8. water inlet pipe; 9. water outlet pipe. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0034] Example 1

[0035] like Figure 1 As shown, this embodiment provides an air pressure regulating mechanism 1, a first end of which is connected to the interior of a shell 3 of a paint stirring device, and a second end of which is connected to the atmosphere. The mechanism includes a tube body 11, and a first pipe 12 and a second pipe 13 are arranged in the tube body 11; a first sealing cover 14 is arranged on the top of the first pipe 12, and a first spring 16 is arranged in the first pipe 12, and the first spring 16 is connected to the first sealing cover 14; a second sealing cover 15 is arranged on the bottom of the second pipe 13, and a second spring 17 is arranged in the second pipe 13, and the second spring 17 is connected to the second sealing cover 15.

[0036] The first pipe 12 and the second pipe 13 are parallel to each other and have the same length. The first pipe 12 and the second pipe 13 are connected to the side wall of the tube body 11. Both ends of the first pipe 12 and the second pipe 13 are provided with openings, and the gas in the tube body 11 can enter the first pipe 12 and / or the second pipe 13 through the openings.

[0037] A first sealing cover 14 is disposed at the top of the first pipeline 12 to cover the opening at the top of the first pipeline 12. A second sealing cover 15 is disposed at the bottom of the second pipeline 13 to cover the opening at the bottom of the second pipeline 13.

[0038] The side of the first sealing cover 14 close to the first pipe 12 is connected to the movable end of the first spring 16, and the side of the second sealing cover 15 close to the second pipe 13 is connected to the movable end of the second spring 17. When the first spring 16 is stretched, the first spring 16 pushes the first sealing cover 14 open, thereby opening the opening at the top of the first sealing cover 14, so that the opening at the top of the first sealing cover 14 is communicated with the inner cavity of the tube body 11. When the second spring 17 is stretched, the second spring 17 pushes the second sealing cover 15 open, thereby opening the opening at the bottom of the second sealing cover 15, so that the opening at the bottom of the second sealing cover 15 is communicated with the inner cavity of the tube body 11.

[0039] One or more first springs 16 may be provided in the first pipe 12; one or more second springs 17 may be provided in the second pipe 13. In this embodiment, two first springs 16 are provided in the first pipe 12, and two second springs 17 are provided in the second pipe 13 as an example. The two first springs 16 are symmetrically distributed on both sides of the central axis of the first sealing cover 14, and the two second springs 17 are symmetrically distributed on both sides of the central axis of the second sealing cover 15. The two symmetrical first springs 16 and the two symmetrical second springs 17 are provided so that when the first sealing cover 14 or the second sealing cover 15 is ejected, the first sealing cover 14 or the second sealing cover 15 is subjected to balanced force.

[0040] The shape of the first sealing cover 14 can be C-shaped or T-shaped, which is not limited here. In this embodiment, the shape of the first sealing cover 14 is C-shaped, and the shape of the second sealing cover 15 is the same as the first sealing cover 14 as an example.

[0041] The tube body 11 of the air pressure regulating mechanism 1 of this embodiment is connected to the inside of the shell 3 of the paint stirring device. When the air pressure inside the shell 3 of the paint stirring device rises to a certain value, the first spring 16 is stretched, and the first spring 16 pushes open the first sealing cover 14, so that the gas inside the shell 3 of the paint stirring device is discharged through the first pipe 12, thereby reducing the air pressure inside the shell 3 of the paint stirring device and preventing the shell 3 from being prevented. When the air pressure inside the shell 3 of the paint stirring device drops to a certain value, the second spring 17 is stretched, and the second spring 17 pushes open the second sealing cover 15, so that the gas outside the shell 3 of the paint stirring device flows into the shell 3 of the paint stirring device through the second pipe 13, thereby increasing the air pressure inside the shell 3 of the paint stirring device and preventing the shell 3 from being deflated under the action of air pressure.

[0042] The air pressure regulating mechanism 1 of this embodiment is combined with the first pipe 12 and the second pipe 13. When the air pressure inside the shell 3 of the paint stirring device is high or low, that is, when the air pressure in the inner cavity of the tube body 11 of the air pressure regulating mechanism 1 is high or low, the gas inside the shell 3 can be discharged to the outside of the shell 3, or the gas outside the shell 3 can be allowed to flow into the inside of the shell 3, thereby controlling the internal and external air pressure difference of the shell 3 of the paint stirring device within a certain range.

[0043] A gas pressure regulating mechanism provided in this embodiment includes a tube body 11, in which a first pipe 12 and a second pipe 13 are arranged. A first sealing cover 14 is arranged at the top of the first pipe 12, and a first spring 16 is arranged in the first pipe 12, and the first spring 16 is connected to the first sealing cover 14. A second sealing cover 15 is arranged at the bottom of the second pipe 13, and a second spring 17 is arranged in the second pipe 13, and the second spring 17 is connected to the second sealing cover 15. The first end of the gas pressure regulating mechanism 1 is connected to the inside of the shell of the paint stirring device, and the second end is connected to the atmosphere. When the air pressure inside the shell 3 of the paint stirring device rises to a certain value, the air pressure inside the shell 3 of the paint stirring device is greater than the external atmospheric pressure. At this time, under the action of the internal and external air pressure difference, the first spring 16 is stretched, and the first spring 16 pushes open the first sealing cover 14, so that the gas inside the paint stirring device is discharged through the first pipe 12, thereby reducing the air pressure inside the paint stirring device and avoiding explosion of the shell. When the air pressure inside the shell 3 of the paint stirring device drops to a certain value, the air pressure inside the shell 3 of the paint stirring device is lower than the external atmospheric pressure. At this time, under the action of the internal and external pressure difference, the second spring 17 is stretched, and the second spring 17 pushes open the second sealing cover 15, so that the air outside the shell 3 flows into the shell 3 through the second pipe 13, so that the air pressure inside the shell 3 increases, and the shell 3 is prevented from being deflated under the action of the air pressure.

[0044] Example 2

[0045] like Figure 1 As shown, this embodiment provides an air pressure regulating mechanism 1, a first end of which is connected to the interior of a shell 3 of a paint stirring device, and a second end of which is connected to the atmosphere. The mechanism includes a tube body 11, and a first pipe 12 and a second pipe 13 are arranged in the tube body 11; a first sealing cover 14 is arranged on the top of the first pipe 12, and a first spring 16 is arranged in the first pipe 12, and the first spring 16 is connected to the first sealing cover 14; a second sealing cover 15 is arranged on the bottom of the second pipe 13, and a second spring 17 is arranged in the second pipe 13, and the second spring 17 is connected to the second sealing cover 15.

[0046] The fixed end of the first spring 16 is connected to the side wall of the first pipe 12 , and the fixed end of the second spring 17 is connected to the side wall of the second pipe 13 .

[0047] The fixed ends of the first spring 16 are welded to the side walls on both sides of the first pipe 12, and the fixed ends of the second spring 17 are welded to the side walls on both sides of the second pipe 13. The two first springs 16 are symmetrically arranged on both sides of the central axis of the first sealing cover 14, and the two first springs 16 have the same height in the first pipe 12. The two second springs 17 are symmetrically arranged on both sides of the central axis of the second sealing cover 15, and the two second springs 17 have the same height in the second pipe 13.

[0048] When the first spring 16 is in the initial state, that is, when the air pressure in the first pipe 12 is less than the first air pressure threshold, the first spring 16 has a retracting elastic force, so that the first sealing cover 14 covers the opening at the top of the first pipe 12. When the second spring 17 is in the initial state, that is, when the air pressure in the second pipe 13 is greater than the second air pressure threshold, the second spring 17 has a retracting elastic force, so that the second sealing cover 15 covers the opening at the bottom of the second pipe 13.

[0049] A mounting plate 18 is disposed in the tube body 11 , and the first pipeline 12 and the second pipeline 13 are penetrated through the mounting plate 18 .

[0050] The two ends of the mounting plate 18 are connected to the side walls on both sides of the inner cavity of the tube body 11. Preferably, the mounting package is perpendicular to the side walls on both sides of the inner cavity of the tube body 11. Two circular openings are provided on the mounting plate 18, and the first pipe 12 and the second pipe 13 are respectively penetrated through the two circular openings. The first pipe 12 and the second pipe 13 can form an interference fit with the circular openings, or the circular openings can be provided with internal threads, and the outer walls of the first pipe 12 and the second pipe 13 are provided with external threads that match the internal threads. Under the interaction of the internal threads and the external threads, the first pipe 12 and the second pipe 13 are fixed.

[0051] The mounting plate 18 may be fixedly connected to the side walls on both sides of the inner cavity of the tube body 11, or may be detachably connected to the side walls on both sides of the inner cavity of the tube body 11. When the height of the mounting plate 18 needs to be adjusted, the mounting plate 18 is removed from the side walls on both sides of the inner cavity of the tube body 11, and after adjusting the height of the mounting plate 18, the mounting plate 18 is fixed to the side walls on both sides of the inner cavity of the tube body 11.

[0052] The bottom of the first pipe 12 is communicated with the inner cavity of the pipe body 11 , and the top of the second pipe 13 is communicated with the inner cavity of the pipe body 11 .

[0053] The top of the tube body 11 is connected to the outside atmosphere, and the bottom of the tube body 11 is connected to the inside of the shell 3 of the paint stirring device. The bottom of the first pipe 12 is provided with an opening, which is connected to the inner cavity of the tube body 11. The top of the second pipe 13 is provided with an opening, which is connected to the inner cavity of the tube body 11.

[0054] When the air pressure inside the shell 3 of the paint stirring device increases, the air pressure inside the tube body 11 of the air pressure regulating device also increases. Since the air pressure inside the tube body 11 is greater than the external atmospheric pressure, the first spring 16 is stretched, and the first spring 16 pushes out the first sealing cover 14 to open the opening at the top of the first pipe 12. The gas inside the shell 3 of the paint stirring device flows into the tube body 11, then flows into the first pipe 12 from the tube body 11, and finally is discharged to the outside atmosphere from the opening at the top of the first pipe 12. When the air pressure inside the shell 3 of the paint stirring device decreases, the air pressure inside the tube body 11 of the air pressure regulating device also decreases. Since the air pressure inside the tube body 11 is less than the external atmospheric pressure, the second spring 17 is stretched, and the second spring 17 pushes out the second sealing cover 15 to open the opening at the bottom of the second pipe 13. The outside atmosphere flows into the tube body 11 of the air pressure regulating mechanism 1, then flows into the second pipe 13 from the tube body 11, and finally flows into the shell 3 of the paint stirring device from the opening at the bottom of the second pipe 13.

[0055] The fixed end of the first spring 16 of the air pressure regulating mechanism 1 of this embodiment is connected to the side wall of the first pipe 12, and the fixed end of the second spring 17 is connected to the side wall of the second pipe 13. A mounting plate 18 is arranged in the tube body 11, and the first pipe 12 and the second pipe 13 are arranged through the mounting plate 18. The bottom of the first pipe 12 is communicated with the inner cavity of the tube body 11, and the top of the second pipe 13 is communicated with the inner cavity of the tube body 11. When the air pressure inside the shell 3 of the paint stirring device is high, the air pressure in the inner cavity of the tube body 11 of the air pressure regulating mechanism 1 is also high, so that the first sealing cover 14 is opened, and the gas inside the shell 3 of the paint stirring device is discharged to the outside atmosphere through the first pipe 12, so as to prevent the shell 3 of the paint stirring device from exploding. When the air pressure inside the shell 3 of the paint stirring device is low, the air pressure in the inner cavity of the tube body 11 of the air pressure regulating mechanism 1 is also low, so that the second sealing cover 15 is opened, and the outside gas flows into the shell 3 of the paint stirring device through the second pipe 13, so as to prevent the shell 3 of the paint stirring device from being deflated.

[0056] Example 3

[0057] like Figure 2 As shown, this embodiment provides a paint stirring device, including a cover plate 2, and the cover plate 2 is provided with the air pressure regulating mechanism 1 in Example 1 or Example 2; the cover plate 2 is connected to the shell 3, and the shell 3 and the cover plate 2 are enclosed to form a stirring chamber, and a stirring mechanism 4 is provided in the stirring chamber.

[0058] A cover plate 2 is bolted to a shell 3 of the paint stirring device, and an air pressure regulating mechanism 1 is connected to the cover plate 2. The cover plate 2 covers the top of the shell 3, and the cover plate 2 and the shell 3 cooperate with each other to form a stirring chamber. A stirring mechanism 4 is arranged in the stirring chamber, and the stirring mechanism 4 can rotate in the stirring chamber to stir the paint in the stirring chamber.

[0059] The stirring mechanism 4 includes a first stirrer 41 and a second stirrer 42 . The first stirrer 41 is connected to the cover plate 2 , and the second stirrer 42 is connected to the bottom of the housing 3 .

[0060] The first stirrer 41 and the second stirrer 42 are symmetrically arranged at the upper and lower sides of the stirring chamber. The first stirrer 41 is arranged close to the top of the shell 3 , and the second stirrer 42 is connected to the bottom of the shell 3 .

[0061] The stirring chamber is filled with paint, and during the process of the first stirrer 41 and the second stirrer 42 stirring the paint, the solvent in the paint component will evaporate in the form of gas. As the external temperature changes, the air pressure inside the shell 3 will also change. The air pressure inside the shell 3 may increase or decrease.

[0062] The first agitator 41 includes a first motor 411 and a first stirring blade 412. The first motor 411 is arranged on the top of the cover plate 2, and the first stirring blade 412 is located in the stirring chamber. The driving shaft of the first motor 411 extends into the stirring chamber, and the first stirring blade 412 is connected to the driving shaft of the first motor 411.

[0063] like Figure 3-Figure 4 As shown, the first stirring blade 412 and the second stirring blade 422 have the same shape, both of which are linear. The portion where the first stirring blade 412 is connected to the drive shaft of the first motor 411 extends to both ends to form a curved portion. The curved portion is inclined toward the direction close to the cover plate 2, and the curvature radius of the curved portion gradually increases in the direction close to the cover plate 2.

[0064] The length of the first stirring blade 412 on the side close to the cover plate 2 is greater than the length of the first stirring blade 412 on the side away from the cover plate 2, and the curved portion of the first stirring blade 412 makes the first stirring blade 412 streamlined. Similarly, the curved portion of the second stirring blade 422 makes the second stirring blade 422 streamlined. The first stirring blade 412 and the second stirring blade 422 encounter less resistance during the process of stirring the paint. Since most of the kinetic energy provided by the first motor 411 and the second motor 421 is used to stir the paint, a small part is used to overcome the resistance encountered by the first stirring blade 412 and the second stirring blade 422 during the rotation process, the stirring efficiency of the first agitator 41 and the second agitator 42 is relatively high.

[0065] There is a gap between the two ends of the first stirring blade 412 and the inner wall of the shell 3, and there is a gap between the two ends of the second stirring blade 422 and the inner wall of the shell 3, thereby preventing the first stirring blade 412 and the second stirring blade 422 from rubbing against the inner wall of the shell 3 during rotation, thereby preventing the first stirring blade 412 and the second stirring blade 422 from cracking or breaking.

[0066] The stator of the first motor 411 is arranged on the side of the cover plate 2 away from the stirring chamber, and the driving shaft of the first motor 411 extends downward into the stirring chamber. The driving shaft of the first motor 411 is connected to the first stirring blade 412. When the driving shaft of the first motor 411 rotates, the first stirring blade 412 is driven to rotate, thereby stirring the paint at the top of the stirring chamber. The stator of the second motor 421 is arranged on the side of the housing 3 away from the stirring chamber, and the driving shaft of the second motor 421 extends upward into the stirring chamber. The driving shaft of the second motor 421 is connected to the second stirring blade 422. When the driving shaft of the second motor 421 rotates, the second stirring blade 422 is driven to rotate, thereby stirring the paint at the bottom of the stirring chamber.

[0067] The power of the first motor 411 and the second motor 421 is adjustable. When the stirring rate of the paint needs to be increased, the power of the first motor 411 and the second motor 421 is increased. When the stirring rate of the paint needs to be reduced, the power of the first motor 411 and the second motor 421 is reduced. Since the first motor 411 drives the first stirring blade 412 to stir the paint, and the second motor 421 drives the second stirring blade 422 to stir the paint at the same time, the power of the first motor 411 is set to be the same as the power of the second motor 421, so that the first stirring blade 412 and the second stirring blade 422 have the same stirring rate for the paint, thereby ensuring the uniformity of the processed paint.

[0068] The cover plate 2 is connected with a feed pipe 5, and the bottom of the shell 3 is connected with a discharge pipe 6; the feed pipe 5 and the discharge pipe 6 are both in communication with the stirring chamber.

[0069] The paint to be stirred enters the stirring chamber from the feed pipe 5 on the cover plate 2. Under the driving action of the first motor 411, the first stirring blade 412 stirs the paint at the top of the stirring chamber, i.e., near the feed pipe 5. The paint stirred by the first stirring blade 412 falls into the bottom of the stirring chamber. Under the driving action of the second motor 421, the second stirring blade 422 stirs the paint at the bottom of the stirring chamber, i.e., near the discharge pipe 6. The paint stirred by the second stirring blade 422 enters the discharge pipe 6 and is discharged from the discharge pipe 6. The first stirring blade 412 and the second stirring blade 422 are combined to stir the paint so that the paint is more uniform.

[0070] Preferably, two discharge pipes 6 are provided at the bottom of the housing 3, and the two discharge pipes 6 are symmetrically distributed on both sides of the second agitator 42. The second stirring blade 422 is horizontally arranged, and has curved portions at both ends, so the discharge pipes 6 are arranged below the curved portions at both ends of the second stirring blade 422, so that after the second stirring blade 422 stirs the paint falling from the first stirring blade 412, the paint stirred by the second stirring blade 422 is discharged from the two discharge pipes 6, thereby improving the discharge efficiency of the paint.

[0071] The paint stirring device of this embodiment includes a cover plate 2, and the cover plate 2 is provided with an air pressure regulating mechanism 1. The cover plate 2 is connected to a shell 3, and the shell 3 and the cover plate 2 are enclosed to form a stirring chamber, and a stirring mechanism 4 is provided in the stirring chamber. The stirring mechanism 4 includes a first stirrer 41 and a second stirrer 42, the first stirrer 41 is connected to the cover plate 2, and the second stirrer 42 is connected to the bottom of the shell 3. The cover plate 2 is connected to a feed pipe 5, and the bottom of the shell 3 is connected to a discharge pipe 6; the feed pipe 5 and the discharge pipe 6 are both connected to the stirring chamber. The paint is stirred in combination with the first stirring blade 412 and the second stirring blade 422, so that the paint is more uniform.

[0072] Example 4

[0073] like Figure 2 As shown, this embodiment provides a paint stirring device, including a cover plate, and the cover plate is provided with the air pressure regulating mechanism in Example 1 or Example 2; the cover plate is connected to the shell, and the shell and the cover plate are enclosed to form a stirring chamber, and the stirring chamber is provided with a stirring mechanism.

[0074] A jacket 7 is provided on a side of the shell 3 away from the stirring chamber, and a circulating water flow channel is opened in the jacket 7 .

[0075] A water inlet pipe 8 is connected to a side of the jacket 7 close to the cover plate 2 , and a water outlet pipe 9 is connected to a side of the jacket 7 opposite to the cover plate 2 .

[0076] The shape of the jacket 7 is the same as that of the shell 3, and the jacket 7 covers the side of the shell 3 away from the stirring chamber. The side of the top of the jacket 7 close to the cover plate 2 is connected to the water inlet pipe 8, and the side of the bottom of the jacket 7 close to the discharge pipe 6 is connected to the water outlet pipe 9. The coolant flows into the water inlet pipe 8, flows downward into the circulating water flow channel inside the jacket 7, and finally flows out from the water outlet pipe 9. The coolant can be water or other liquids with a cooling effect, which is not limited here. In this embodiment, the coolant is water as an example. The coolant flows through the circulating water flow channel, thereby cooling the shell 3.

[0077] The paint stirring device also includes a support seat, and the shell 3 is installed on the top of the support seat. The support seat includes a fixed part, which is a flat plate parallel to the ground. The fixed part is provided with an opening, and the bottom of the shell 3 of the paint stirring device is an arc shape adapted to the opening of the fixed part. The shell 3 of the paint stirring device is placed from top to bottom into the opening of the fixed part, so that the paint stirring device is fixed on the fixed part. The support seat also includes a support part, which is composed of two support columns. The first end of the support column is connected to the fixed part, and the second end is in contact with the ground.

[0078] The shell 3 of the paint stirring device of this embodiment is provided with a jacket 7 on the side away from the stirring chamber, and a circulating water flow channel is provided in the jacket 7. The side of the jacket 7 close to the cover plate 2 is connected to a water inlet pipe 8, and the side of the jacket 7 opposite to the cover plate 2 is connected to a water outlet pipe 9. The jacket 7 covers the side of the shell 3 away from the stirring chamber, and the coolant flows from the water inlet pipe 8 into the circulating water flow channel inside the jacket 7, and then flows out from the water outlet pipe 9, thereby cooling the shell 3.

[0079] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0080] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would then be positioned "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0081] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0082] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air pressure regulating mechanism, the first end of which is connected to the interior of a housing of a paint stirring device and the second end of which is connected to the atmosphere, characterized in that: The mechanism includes a tube body, in which a first pipe and a second pipe are arranged; a first sealing cover is arranged on the top of the first pipe, a first spring is arranged in the first pipe, and the first spring is connected to the first sealing cover; a second sealing cover is arranged on the bottom of the second pipe, a second spring is arranged in the second pipe, and the second spring is connected to the second sealing cover.

2. The gas pressure regulating mechanism according to claim 1, characterized in that: The fixed end of the first spring is connected to the side wall of the first pipe, and the fixed end of the second spring is connected to the side wall of the second pipe.

3. The gas pressure regulating mechanism according to claim 1, characterized in that: A mounting plate is disposed in the tube body, and the first pipeline and the second pipeline are penetrated through the mounting plate.

4. The gas pressure regulating mechanism according to claim 1, characterized in that: The bottom of the first pipe is communicated with the inner cavity of the pipe body, and the top of the second pipe is communicated with the inner cavity of the pipe body.

5. A paint stirring device, characterized in that: It comprises a cover plate, the cover plate is provided with the air pressure regulating mechanism according to any one of claims 1 to 4; the cover plate is connected to the shell, the shell and the cover plate enclose a stirring chamber, and the stirring chamber is provided with a stirring mechanism.

6. The paint stirring device according to claim 5, characterized in that: The stirring mechanism comprises a first stirrer and a second stirrer, wherein the first stirrer is connected to the cover plate, and the second stirrer is connected to the bottom of the shell.

7. The paint stirring device according to claim 5, characterized in that: The cover plate is connected with a feed pipe, and the bottom of the shell is connected with a discharge pipe; the feed pipe and the discharge pipe are both communicated with the stirring chamber.

8. The paint stirring device according to claim 5, characterized in that: A jacket is arranged on one side of the shell away from the stirring chamber, and a circulating water flow channel is opened in the jacket.

9. The paint stirring device according to claim 8, characterized in that: A side of the jacket close to the cover plate is connected to a water inlet pipe, and a side of the jacket opposite to the cover plate is connected to a water outlet pipe.

10. The paint stirring device according to claim 6, characterized in that: The first agitator includes a first motor and a first stirring blade. The first motor is arranged on the top of the cover plate, and the first stirring blade is located in the stirring chamber. The driving shaft of the first motor extends into the stirring chamber, and the first stirring blade is connected to the driving shaft of the first motor.

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