Coating stirring device

Abstract

The invention belongs to the technical field of outer wall construction, and discloses a coating stirring device. According to the coating stirring device, the part, penetrating into the tank body, of the stirring shaft is provided with the first open hole communicating with the hollow cavity of the stirring shaft, the negative pressure generation unit communicates with the hollow cavity of the stirring shaft, and the negative pressure generation unit can generate negative pressure airflow and suck splashing coating at the first open hole away from the tank body in time; the continuous and normal operation of the stirring shaft is guaranteed, the stirring continuity and the stirring efficiency are improved, the construction quality of an outer wall is guaranteed, the subsequent shutdown cleaning operation on the stirring shaft is avoided, and the maintenance cost of the stirring shaft is reduced. The negative pressure generation unit is communicated with a gas-liquid separation unit, and the gas-liquid separation unit is arranged, so that the overall utilization rate of the coating and the stirring economy are improved. The stirring operation of the coating is realized by virtue of the stirring shaft, and the anti-splashing operation is realized by virtue of the cooperation of the liquid blocking unit and the negative pressure generation unit, so that the automation degree of coating stirring is improved, and the stirring convenience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of external wall construction, and in particular to a paint stirring device. BACKGROUND

[0002] The paint is coated on the surface of the object to be protected or decorated, and can form a firm and continuous film with the object to be painted. In order to improve the appearance and structural durability of the external wall, the paint is usually fully stirred before use. The existing stirring operation is mostly completed by manual electric stirring tool.

[0003] However, paint is easy to splash during stirring, which pollutes the surrounding building environment and reduces the utilization rate of paint. The control degree of paint splashing by manual auxiliary stirring operation depends on the adjustment accuracy of the stirring angle and stirring speed by the operator, and the requirement for manual operation is high. Frequent adjustment will affect the continuity of the stirring operation and reduce the stirring efficiency. Moreover, after long-term stirring operation, the paint is easy to adhere and solidify on the stirring shaft, which affects the stirring speed. Usually, the machine needs to be stopped for cleaning, and the maintenance cost is high.

[0004] Therefore, it is urgent to provide a paint stirring device to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a paint stirring device which can improve the stirring continuity, stirring efficiency and stirring convenience, reduce the maintenance cost and ensure the quality of external wall construction.

[0006] To achieve this purpose, the present application adopts the following technical solutions: The present application provides a paint stirring device, which comprises: a tank body for containing paint, an opening is provided at the upper part of the tank body; a liquid blocking unit which is detachably blocked at the opening of the tank body; a stirring unit comprising a stirring shaft and a rotary driving member, at least part of the stirring shaft penetrates into the tank body through the liquid blocking unit, the stirring shaft is arranged at the driving end of the rotary driving member, the rotary driving member is used to drive the stirring shaft to rotate to stir the paint in the tank body, the stirring shaft is provided with a hollow cavity extending along the height direction of the tank body, the side wall surface of the stirring shaft penetrating into the tank body is provided with a first opening communicating with the hollow cavity; a negative pressure generating unit is arranged at the upper part of the liquid blocking unit and communicates with the hollow cavity, the negative pressure generating unit can generate a negative pressure airflow to suck the splashed paint at the first opening; a gas-liquid separation unit is connected to the negative pressure generating unit, which is used to collect and separate the negative pressure airflow and the splashed paint.

[0007] As an option, the negative pressure generating unit comprises a negative pressure generating member, a gas collecting assembly and a negative pressure pipeline, the negative pressure generating member is coaxially arranged with the stirring shaft, and the stirring shaft can drive the negative pressure generating member to rotate and generate a negative pressure airflow when the stirring shaft rotates, the gas collecting assembly is arranged above the negative pressure generating member, and the gas collecting assembly is used for collecting the negative pressure generated by the negative pressure generating member to drive the splashed coating at the first opening to enter the gas-liquid separation unit.

[0008] As an option, the gas collecting assembly comprises a spiral rectifying member and a throat in communication from bottom to top, the spiral rectifying member is arranged above the negative pressure generating member and is used for adjusting the direction of the negative pressure airflow generated by the negative pressure generating member, one end of the negative pressure pipeline is communicated with the side wall surface of the throat, and the other end is communicated with the hollow cavity, and the negative pressure generating member can drive the splashed coating at the first opening to enter the gas-liquid separation unit when the negative pressure generating member generates the negative pressure airflow.

[0009] As an option, the gas collecting assembly further comprises a fixing member, and the fixing member is used for fixing the position of the throat relative to the negative pressure generating member.

[0010] As an option, the gas collecting assembly comprises a gas collecting chamber, the gas collecting chamber is communicated with the negative pressure pipeline and is rotationally connected to the part of the stirring shaft that does not penetrate into the tank, the stirring shaft arranged in the gas collecting chamber is provided with a second opening, and the second opening is communicated with the hollow cavity.

[0011] As an option, the liquid blocking unit comprises a flexible adjusting member, a flexible sealing member and a liquid blocking member, the flexible adjusting member is arranged at the opening of the tank in a vertically adjustable manner, the flexible sealing member and the liquid blocking member are both connected to the flexible adjusting member, the flexible sealing member is sealingly connected to the inner wall surface of the opening of the tank, the liquid blocking member is arranged on the side of the flexible sealing member away from the opening of the tank and abuts against the inner wall surface of the tank, and the liquid blocking member is sleeved on the outer circumferential side of the stirring shaft and is rotationally connected with the stirring shaft.

[0012] As an option, the liquid blocking unit further comprises a collection disc and a suction accessory, the collection disc is detachably arranged at the bottom of the flexible adjusting member and is used for collecting the splashed coating remaining in the flexible adjusting member, and the suction accessory is arranged in the collection disc and is used for adsorbing the splashed coating.

[0013] As an option, the gas-liquid separation unit comprises a collection pipeline, a gas-liquid separation container, a spiral flow guide member, an exhaust pipe and a liquid collecting disc, the first end of the collection pipeline is communicated with the negative pressure generating unit, the gas-liquid separation container is communicated with the second end of the collection pipeline, the upper part of the gas-liquid separation container is communicated with the exhaust pipe, and the lower part of the gas-liquid separation container is communicated with the liquid collecting disc, the spiral flow guide member is arranged in the gas-liquid separation container and is used for separating the splashed coating and the negative pressure airflow entering the gas-liquid separation container, so that the negative pressure airflow is discharged through the exhaust pipe, and the splashed coating flows into the liquid collecting disc.

[0014] As an option, the inner wall surface of the gas-liquid separation container is detachably provided with an anti-sticking member.

[0015] Optionally, the gas-liquid separation unit further comprises a communication pipeline, one end of the communication pipeline is communicated with the liquid collecting tray, and the other end is communicated with the interior of the tank body.

[0016] Advantages of the present application: The paint stirring device provided by the present application is provided with a negative pressure generating unit, which can generate a negative pressure airflow and timely suck the splashed paint at the first opening away from the tank body, thereby ensuring the continuous and normal operation of the stirring shaft, improving the stirring continuity and stirring efficiency, ensuring the construction quality of the outer wall, avoiding the subsequent shutdown cleaning operation of the stirring shaft, and thereby reducing the maintenance cost of the stirring shaft. The negative pressure generating unit is communicated with a gas-liquid separation unit, which can collect the negative pressure airflow generated by the negative pressure generating unit and the splashed paint carried by the negative pressure airflow during the flow process, and separate the two. The setting of the gas-liquid separation unit avoids the pollution of the splashed paint to the surrounding environment of the building, and also facilitates the subsequent operation personnel to re-put the splashed paint into the tank body, thereby improving the overall utilization rate of the paint and the stirring economy. The liquid blocking unit is detachably sealed to the opening of the tank body. The setting of the liquid blocking unit avoids the splashing of the paint out of the opening of the tank body during the stirring process, thereby reducing the degree of waste of the paint and the degree of pollution to the surrounding environment. The paint stirring operation is realized by the driving operation of the rotating driving member on the stirring shaft, and the anti-splashing operation is realized by the cooperation of the liquid blocking unit and the negative pressure generating unit. Compared with the manual control of the splashing degree in the prior art, the paint stirring device provided by the present application improves the automation degree of the paint stirring and improves the stirring convenience. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural diagram of the paint stirring device according to the embodiment of the present application Figure 1 ; Figure 2 is a structural diagram of the paint stirring device according to the embodiment of the present application Figure 2 ; Figure 3 is a structural diagram of the paint stirring device according to the embodiment of the present application Figure 1 ; Figure 4 is a structural diagram of the paint stirring device according to the embodiment of the present application Figure 2 ; Figure 5 is Figure 4 an enlarged view of A in FIG. 1; Figure 6 is Figure 4Enlarged view at B; Figure 7 is a structural schematic of the paint stirring device according to an embodiment of the present application without a tank body Figure 3 ; Figure 8 is a structural schematic of the paint stirring device according to an embodiment of the present application without a tank body Figure 4 ; Figure 9 is a structural schematic of the gas-liquid separation unit according to an embodiment of the present application Figure 10 is a structural schematic of the paint stirring device according to an embodiment of the present application Figure 3 ; Figure 11 is a structural schematic of the liquid blocking unit according to an embodiment of the present application Figure 1 ; Figure 12 is a structural schematic of the liquid blocking unit according to an embodiment of the present application Figure 2 ; Figure 13 is a structural schematic of the liquid blocking unit according to an embodiment of the present application Figure 3 .

[0018] in the figure: 1, tank body; 11, universal wheel; 2, liquid blocking unit; 21, flexible adjusting member; 22, flexible sealing member; 23, liquid blocking member; 24, collection disc; 25, suction accessory; 26, guide vane; 3, stirring unit; 31, stirring shaft; 311, first opening; 312, second opening; 32, rotary driving member; 33, stirring paddle; 34, mounting bracket; 4, negative pressure generating unit; 41, negative pressure generating member; 42, gas collection assembly; 421, spiral rectifying member; 422, throat; 423, fixing member; 424, gas collection chamber; 43, negative pressure pipeline; 44, throttle valve; 45, protective shell; 46, diffuser pipe opening; 5, gas-liquid separation unit; 51, collection pipeline; 52, gas-liquid separation container; 521, anti-sticking member; 53, spiral guide member; 54, exhaust pipe; 55, liquid collection disc. DETAILED DESCRIPTION

[0019] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar parts or parts having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-13 As shown, this embodiment provides a paint mixing device, including a tank 1, a liquid-blocking unit 2, a mixing unit 3, a negative pressure generating unit 4, and a gas-liquid separation unit 5. The tank 1 is used to contain paint, and an opening is provided at the top of the tank 1. The liquid-blocking unit 2 is detachably sealed to the opening of the tank 1. The mixing unit 3 includes a mixing shaft 31 and a rotary drive 32. At least a portion of the mixing shaft 31 passes through the liquid-blocking unit 2 into the tank 1. The mixing shaft 31 is located at the driving end of the rotary drive 32, which is used to drive the paint mixing device. The stirring shaft 31 rotates to stir the coating material inside the tank 1. The stirring shaft 31 has a hollow cavity extending along the height direction of the tank 1. The side wall of the stirring shaft 31, which penetrates into the tank 1, has a first opening 311 that communicates with the hollow cavity. The negative pressure generating unit 4 is located above the liquid-blocking unit 2 and communicates with the hollow cavity. The negative pressure generating unit 4 can generate a negative pressure airflow to draw in the splashed coating material at the first opening 311. The gas-liquid separation unit 5 is connected to the negative pressure generating unit 4 and is used to collect and separate the negative pressure airflow and the splashed coating material. It can be understood that in this embodiment, the first opening 311 is set at a relatively high position near the opening of the tank 1 to reduce the interference of the negative pressure generating unit 4 on the normal stirring operation of the coating material.

[0024] In the embodiment, the part of the stirring shaft 31 penetrating into the inside of the tank body 1 is provided with a first opening hole 311 communicating with the hollow cavity of the stirring shaft 31, and the negative pressure generating unit 4 is communicated with the hollow cavity of the stirring shaft 31. Compared with the prior art that the paint is easy to adhere to the stirring shaft 31 after long-term stirring and interferes with the normal stirring operation, the paint stirring device provided in the embodiment is provided with the negative pressure generating unit 4, can generate a negative pressure airflow, and timely absorbs the splashed paint at the first opening hole 311 away from the tank body 1, thereby guaranteeing the continuous and normal operation of the stirring shaft 31, improving the stirring continuity and stirring efficiency by setting the negative pressure generating unit 4, guaranteeing the construction quality of the outer wall, avoiding the subsequent stop cleaning operation of the stirring shaft 31, and thereby reducing the maintenance cost of the stirring shaft 31. The negative pressure generating unit 4 is communicated with the gas-liquid separation unit 5, the gas-liquid separation unit 5 can collect the negative pressure airflow generated by the negative pressure generating unit 4 and the splashed paint carried by the negative pressure airflow in the flow process, and separate the two, and setting the gas-liquid separation unit 5 avoids the pollution of the splashed paint to the surrounding environment of the building, and also facilitates the subsequent operator to re-put the splashed paint into the tank body 1, thereby improving the overall utilization rate of the paint and the stirring economy. The liquid blocking unit 2 is detachably sealed to the opening of the tank body 1, and setting the liquid blocking unit 2 avoids the paint from being thrown out of the opening of the tank body 1 during stirring, thereby reducing the waste degree of the paint and the pollution degree to the surrounding environment. The paint stirring operation is realized by the driving operation of the rotating driving member 32 to the stirring shaft 31, the anti-splashing operation is realized by the cooperation of the liquid blocking unit 2 and the negative pressure generating unit 4, and compared with the prior art that the splashing degree is manually controlled by the operator, the paint stirring device provided in the embodiment improves the automation degree of the paint stirring, and improves the stirring convenience.

[0025] Optionally, as shown in Figure 2 The bottom of the tank body 1 can be rotatably provided with at least two lockable universal wheels 11. Setting the universal wheels 11 improves the moving flexibility of the tank body 1, reduces the carrying difficulty of the operator to the tank body 1, and improves the carrying convenience. The lockable universal wheels 11 improve the position stability of the tank body 1 during the stirring operation, thereby guaranteeing the safety and reliability of the paint stirring operation.

[0026] Specifically, the stirring unit 3 further includes a mounting frame 34, the mounting frame 34 is arranged at the upper part of the negative pressure generating unit 4 and connected with the liquid blocking unit 2, and the rotating driving member 32 is installed on the mounting frame 34 and the driving end is connected to the stirring shaft 31 via the mounting frame 34. Setting the mounting frame 34 improves the structural integrity of the rotating driving member 32 and other components of the paint stirring device, and reduces the space occupancy of the paint stirring device. The mounting frame 34 can be made of aluminum alloy material, which has high structural strength, strong corrosion resistance and light weight characteristics, and is convenient for the operator to install and maintain.

[0027] In some embodiments, the rotary drive 32 is a servo motor. The servo motor has adjustable speed, high adjustment precision, and strong real-time driving performance. Using a servo motor to drive the stirring shaft 31 enhances the versatility of the paint mixing device for mixing paints of varying viscosities. An arc-shaped handle can be provided on the upper part of the servo motor for easy gripping and operation, reducing the difficulty of disassembly, assembly, and maintenance. The outer surface of the arc-shaped handle can be covered with anti-slip materials such as rubber or silicone to prevent slippage during operation.

[0028] In other embodiments, the rotary drive 32 can also be a rotary drive device such as a hydraulic motor or a pneumatic motor, which has high drive stability and overload resistance, and strong drive safety. Its specific structure and working principle are all prior art and will not be described in detail here.

[0029] For example, the stirring unit 3 also includes a plurality of stirring blades 33, which are circumferentially spaced at the bottom of the stirring shaft 31 extending into the tank 1. The arrangement of the plurality of stirring blades 33 effectively enhances the stirring effect of the stirring unit 3 on the coating inside the tank 1, and further improves the uniformity and efficiency of the stirring of the coating.

[0030] Specifically, such as Figures 2-4 As shown, the negative pressure generating unit 4 includes a negative pressure generating component 41, a gas collecting component 42, and a negative pressure pipe 43. The negative pressure generating component 41 is coaxially arranged with the stirring shaft 31. When the stirring shaft 31 rotates, it can drive the negative pressure generating component 41 to rotate and generate a negative pressure airflow. The gas collecting component 42 is arranged above the negative pressure generating component 41. The gas collecting component 42 is used to collect the negative pressure generated by the negative pressure generating component 41 to drive the splashed paint at the first opening 311 into the gas-liquid separation unit 5. The negative pressure generating component 41 is coaxially arranged with the stirring shaft 31, and the rotation of the stirring shaft 31 can drive the negative pressure generating component 41 to rotate synchronously. This saves the driving cost of the negative pressure generating component 41, improves the synchronization of the stirring process of the stirring shaft 31 and the negative pressure airflow generation process, and ensures the real-time performance and reliability of the anti-splashing effect of the paint stirring device. The gas collecting component 42 is arranged above the negative pressure generating component 41. The addition of the gas collecting component 42 realizes the collection of negative pressure airflow and enhances the suction effect of negative pressure airflow on splashed paint. The negative pressure pipe 43 effectively connects the gas collection component 42 with the hollow cavity of the stirring shaft 31, ensuring the smooth intake of the splashed coating by the negative pressure generating unit 4. In this embodiment, the negative pressure generating component 41 can be a centrifugal impeller or a spiral propulsion structure. Its specific structure and working principle are existing technologies and will not be elaborated further here.

[0031] For example, the negative pressure generating unit 4 also includes a throttle valve 44, which is installed in the negative pressure pipe 43 and used to adjust the flow diameter of the negative pressure airflow in the negative pressure pipe 43 to meet the suction requirements of splashed coatings of different viscosities, thereby enhancing the versatility and reliability of the negative pressure generating unit 4 in suctioning coatings of different viscosities. It is understood that when the coating viscosity is high, the flow diameter needs to be increased to ensure stable coating suction. When the coating viscosity is low, the flow diameter needs to be decreased to ensure the suction stability of the negative pressure generating unit 4 for splashed coatings.

[0032] More specifically, the gas collection assembly 42 includes a spiral rectifier 421 and a throat 422 connected from bottom to top. The spiral rectifier 421 is positioned above the negative pressure generator 41 and is used to adjust the direction of the negative pressure airflow generated by the negative pressure generator 41. One end of the negative pressure pipe 43 is connected to the side wall of the throat 422, and the other end is connected to the hollow cavity. When the negative pressure generator 41 generates negative pressure airflow, it can drive the splashed coating at the first opening 311 into the gas-liquid separation unit 5. The spiral rectifier 421 enables real-time adjustment and orderly flow of the negative pressure airflow, improving the suction stability of the splashed coating. The throat 422 is positioned above the spiral rectifier 421. The cross-sectional area of ​​the throat 422 is not greater than the cross-sectional area of ​​the spiral rectifier 421. The throat 422 increases the flow speed of the negative pressure airflow flowing in the subsequent negative pressure pipe 43, enhancing the suction strength and efficiency of the negative pressure generator 4 for the splashed coating. The specific structure and working principle of the spiral rectifier 421 in this embodiment are existing technologies and will not be described in detail here.

[0033] Furthermore, the gas collection assembly 42 also includes a fixing member 423, which is used to fix the position of the throat 422 relative to the negative pressure generating member 41. The fixing member 423 improves the positional accuracy of the throat 422 during the generation of negative pressure airflow, ensures the flow stability of negative pressure airflow, and thus improves the suction stability of the negative pressure generating unit 4 for the splashed coating.

[0034] For example, the fastener 423 may be in the shape of a cross frame, with a hollow installation channel in the middle of the cross frame. The throat 422 is installed in the hollow installation channel and connected to the wall of the fastener 423 to enhance the limiting effect of the fastener 423 on the throat 422.

[0035] Optionally, such as Figures 2-6As shown, the gas collection assembly 42 includes a gas collection chamber 424, which is connected to the negative pressure pipe 43 and rotatably connected to the portion of the stirring shaft 31 that does not penetrate the tank body 1. The stirring shaft 31, located within the gas collection chamber 424, has a second opening 312 that connects to the hollow cavity. The negative pressure pipe 43 is connected to the hollow cavity of the stirring shaft 31 through the sealed gas collection chamber 424. Compared to the negative pressure pipe 43 being directly connected to the hollow cavity, this improves the sealing effect at the connection point, ensuring the effectiveness and efficiency of the negative pressure generating unit 4 in drawing out the splashed paint.

[0036] In this embodiment, the negative pressure generating unit 4 further includes a protective cover 45. The upper part of the protective cover 45 is detachably connected to the mounting bracket 34 by fasteners, and the lower part is detachably connected to the liquid-blocking unit 2 by fasteners. The protective cover 45 covers the outer periphery of the negative pressure generating component 41, the gas collecting assembly 42, and the negative pressure pipe 43. The protective cover 45 improves the protection of other components of the negative pressure generating unit 4 and extends the overall service life of the negative pressure generating unit 4. Compared to the protective cover 45 being directly welded to at least one of the liquid-blocking unit 2 and the mounting bracket 34, the protective cover 45's detachable connection to both reduces maintenance costs and assembly / disassembly difficulty. The protective cover 45 can be a rigid structure, ensuring its structural strength and service life.

[0037] Specifically, the negative pressure pipe 43 is equipped with curved transition bends at the bends in the pipes connecting to the throat 422 and the gas collection chamber 424. Compared with the traditional right-angle pipe sections, this not only avoids the direct adhesion of splashed paint to the negative pressure pipe 43 during the suction process, ensuring the effectiveness of the subsequent gas-liquid separation unit 5 in collecting and separating the splashed paint, reducing the cleaning cost of the negative pressure pipe 43, but also improves the smoothness of the negative pressure airflow at the bends.

[0038] Furthermore, the material of the negative pressure pipe 43 may include stainless steel, which has high structural strength and strong corrosion resistance. The inner wall surface of the negative pressure pipe 43 can be pre-polished to improve the overall smoothness of the inner wall surface of the negative pressure pipe 43 and reduce the adhesion of splashed paint.

[0039] Optionally, such as Figure 1 , Figure 4 and Figure 7As shown, the gas-liquid separation unit 5 includes a collection pipe 51, a gas-liquid separation container 52, a spiral guide 53, an exhaust pipe 54, and a collection tray 55. The first end of the collection pipe 51 is connected to the negative pressure generating unit 4, and the gas-liquid separation container 52 is connected to the second end of the collection pipe 51. The exhaust pipe 54 is connected to the upper part of the gas-liquid separation container 52, and the collection tray 55 is connected to the lower part. The spiral guide 53 is disposed inside the gas-liquid separation container 52 and is used to separate the splashed paint and the negative pressure airflow entering the gas-liquid separation container 52, so that the negative pressure airflow is discharged through the exhaust pipe 54, and the splashed paint is collected into the collection tray 55. Through the above structural arrangement, after the negative pressure airflow carries the splashed paint into the gas-liquid separation container 52, the mixture of negative pressure airflow and splashed paint can be separated from each other under the action of the spiral guide 53. The negative pressure airflow is discharged through the exhaust pipe 54, and the splashed paint is collected into the collection tray 55. The gas-liquid separation unit 5 realizes the automatic separation and processing of the mixture of splashed paint and negative pressure airflow. It should be noted that the separation principle of the spiral guide 53 for the splashed paint and negative pressure airflow in this embodiment is similar to that of the scroll compressor in the prior art, and will not be described in detail here.

[0040] Specifically, such as Figure 1 and Figure 8 As shown, a diffuser port 46 can be installed at the inlet of the connecting pipe section between the collection pipe 51 and the negative pressure generating unit 4. The cross-sectional area of ​​the diffuser port 46 gradually increases along the direction of the negative pressure airflow towards the collection pipe 51. The diffuser port 46 reduces the flow velocity of the negative pressure airflow carrying the splashed paint into the collection pipe 51, prolongs the residence time of the mixture of splashed paint and negative pressure airflow in the gas-liquid separation container 52, ensures sufficient separation of the mixture by the spiral guide 53, reduces noise when the mixture flows through, and improves the construction environment. The inner wall of the diffuser port 46 can be pre-polished to prevent the mixture of splashed paint and negative pressure airflow from adhering to the collection pipe 51, thus reducing the subsequent gas-liquid separation effect or causing blockage of the collection pipe 51 and increasing cleaning and maintenance costs.

[0041] More specifically, a filter element can be detachably installed at the inlet of the connecting pipe section between the gas-liquid separation container 52 and the exhaust pipe 54. The filter element can filter the negative pressure airflow to be discharged and absorb some small particles of splashed paint that may still remain in the negative pressure airflow, ensuring the cleanliness of the discharged negative pressure airflow.

[0042] Optionally, such as Figure 9As shown, an anti-sticking component 521 is detachably provided on the inner wall of the gas-liquid separation container 52. The anti-sticking component 521 prevents splashed paint from directly adhering to the inner wall of the gas-liquid separation container 52 when it is thrown towards the inner wall by the spiral guide component 53. This ensures that subsequent splashed paint can smoothly slide down the anti-sticking component 521 into the collection tray 55. The detachable installation of the anti-sticking component 521 on the inner wall of the gas-liquid separation container 52 reduces the difficulty and cost of subsequent cleaning for operators, thus improving cleaning convenience.

[0043] In this embodiment, the anti-stick component 521 is slidably disposed on the inner wall surface of the gas-liquid separation container 52, reducing the difficulty for operators to assemble and disassemble the anti-stick component 521 and improving the convenience for operators to assemble and disassemble the anti-stick component 521. In other embodiments, the anti-stick component 521 can also be adhered to the inner wall surface of the gas-liquid separation container 52, and the operator can remove the anti-stick component 521 by tearing it off, reducing the manufacturing cost and design cost of the anti-stick component 521.

[0044] For example, the anti-sticking component 521 is made of polytetrafluoroethylene, which is insoluble in many solvents, and polytetrafluoroethylene has low frictional properties and high lubricity and non-stick properties.

[0045] Specifically, the gas-liquid separation unit 5 also includes a connecting pipe, one end of which is connected to the collection tray 55, and the other end is connected to the inside of the tank 1. Compared to manually removing the collection tray 55 and pouring it back into the tank 1, the connecting pipe, with its two ends connected to the collection tray 55 and the inside of the tank 1 respectively, enables automatic recovery of splashed paint. This ensures that the paint inside the tank 1 remains in a sealed space during the mixing process, avoiding problems such as oxidation damage to the paint. This extends the durability of the paint after subsequent construction on the exterior wall, ensuring the construction quality and structural aesthetics of the exterior wall.

[0046] Optionally, the liquid collection tray 55 is threaded to the bottom of the gas-liquid separation container 52, which reduces the difficulty of disassembling and assembling the liquid collection tray 55 for operators, and improves the difficulty and convenience of cleaning the liquid collection tray 55. The liquid collection tray 55 can also be snapped to the bottom of the gas-liquid separation container 52, which provides strong connection stability and convenient disassembly and assembly.

[0047] In this embodiment, as Figure 1 and Figure 10As shown, the liquid-blocking unit 2 includes a flexible adjusting element 21, a flexible sealing element 22, and a liquid-blocking element 23. The flexible adjusting element 21 is vertically height-adjustable at the opening of the tank 1. Both the flexible sealing element 22 and the liquid-blocking element 23 are connected to the flexible adjusting element 21. The flexible sealing element 22 is sealed to the inner wall surface of the opening of the tank 1. The liquid-blocking element 23 is located on the side of the flexible sealing element 22 away from the opening of the tank 1 and abuts against the inner wall surface of the tank 1. The liquid-blocking element 23 is sleeved on the outer periphery of the stirring shaft 31 and rotatably connected to the stirring shaft 31. The vertically height-adjustable flexible adjusting element 21 enables its universality in sealing tanks 1 with different opening heights. Compared with rigid sealing elements, the flexible adjusting element 21 itself has a deformation effect. Therefore, the flexible adjusting element 21 also achieves universality and effectiveness in sealing tanks 1 with openings of different widths and lengths. The flexible sealing element 22 improves the connection and sealing effect between the liquid-blocking unit 2 and the tank 1. The liquid-blocking element 23 effectively intercepts large-volume splashes of paint during the paint mixing process. The liquid-blocking element 23, together with the negative pressure generating unit 4, significantly enhances the interception effect of the paint and reduces the impact of the paint mixing process on the surrounding environment of the building. The flexible adjusting element 21 can be a flexible pleated tube that can be stretched in the vertical direction.

[0048] Optionally, such as Figures 10-13 As shown, the liquid-blocking unit 2 also includes a collection tray 24 and an adsorption element 25. The collection tray 24 is detachably disposed at the bottom of the flexible adjustment element 21 and is used to collect splashed paint remaining in the flexible adjustment element 21. The adsorption element 25 is disposed in the collection tray 24 and is used to adsorb splashed paint. The collection tray 24 effectively collects splashed paint that accidentally enters the flexible adjustment element 21 through the connection gap between the liquid-blocking unit 2 and the stirring shaft 31. The adsorption element 25 adsorbs the splashed paint collected inside the collection tray 24, extending the service life of the collection tray 24. The adsorption element 25 can be a sponge or knitted fabric, etc., and is not limited in detail here.

[0049] More specifically, the flexible regulating component 21 is provided with multiple radially distributed guide vanes 26. When the airflow inside the tank 1 enters the flexible regulating component 21 through the connection gap between the liquid-blocking unit 2 and the stirring shaft 31 during the stirring process, the guide vanes 26 achieve the effect of guiding this part of the airflow, avoiding the coating inside the tank 1 from being affected by the unstable airflow and adhering to the wall of the tank 1 over a large area, and also preventing the coating inside the tank 1 from being directly affected by the unstable airflow and flowing directly into the flexible regulating component 21. The guide vanes 26 extend the service life of the flexible regulating component 21.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A paint mixing device, characterized in that, include: A tank (1) for containing paint, wherein the upper part of the tank (1) is provided with an opening; A liquid-blocking unit (2) is detachably sealed to the opening of the tank body (1); The stirring unit (3) includes a stirring shaft (31) and a rotary drive (32). At least a portion of the stirring shaft (31) passes through the liquid-blocking unit (2) into the tank (1). The stirring shaft (31) is located at the driving end of the rotary drive (32). The rotary drive (32) is used to drive the stirring shaft (31) to rotate in order to stir the coating in the tank (1). The stirring shaft (31) is provided with a hollow cavity extending along the height direction of the tank (1). The side wall of the stirring shaft (31) that passes through the tank (1) is provided with a first opening (311) that communicates with the hollow cavity. The negative pressure generating unit (4) is located on the upper part of the liquid blocking unit (2) and is connected to the hollow cavity. The negative pressure generating unit (4) can generate negative pressure airflow to suck up the splashed paint at the first opening (311). A gas-liquid separation unit (5) is connected to the negative pressure generating unit (4) and is used to collect and separate the negative pressure airflow and the splash coating.

2. The paint mixing device according to claim 1, characterized in that, The negative pressure generating unit (4) includes a negative pressure generating component (41), a gas collecting component (42), and a negative pressure pipe (43). The negative pressure generating component (41) is coaxially arranged with the stirring shaft (31). When the stirring shaft (31) rotates, it can drive the negative pressure generating component (41) to rotate and generate negative pressure airflow. The gas collecting component (42) is arranged above the negative pressure generating component (41). The gas collecting component (42) is used to collect the negative pressure generated by the negative pressure generating component (41) so as to drive the splashed coating at the first opening (311) into the gas-liquid separation unit (5).

3. The paint mixing device according to claim 2, characterized in that, The gas collection assembly (42) includes a spiral rectifier (421) and a throat (422) connected from bottom to top. The spiral rectifier (421) is disposed above the negative pressure generator (41) and is used to adjust the direction of the negative pressure airflow generated by the negative pressure generator (41). One end of the negative pressure pipe (43) is connected to the side wall of the throat (422), and the other end is connected to the hollow cavity. When the negative pressure generator (41) generates negative pressure airflow, it can drive the splashed coating at the first opening (311) into the gas-liquid separation unit (5).

4. The paint mixing device according to claim 3, characterized in that, The gas collection assembly (42) also includes a fixing member (423) for fixing the position of the throat (422) relative to the negative pressure generating member (41).

5. The coating mixing device according to claim 2, characterized in that, The gas collection assembly (42) includes a gas collection chamber (424), which is connected to the negative pressure pipe (43) and rotatably connected to the part of the stirring shaft (31) that does not penetrate the tank (1). The stirring shaft (31) located in the gas collection chamber (424) has a second opening (312), which is connected to the hollow cavity.

6. The paint mixing device according to claim 1, characterized in that, The liquid-blocking unit (2) includes a flexible adjusting member (21), a flexible sealing member (22), and a liquid-blocking member (23). The flexible adjusting member (21) is vertically adjustable at the opening of the tank (1). The flexible sealing member (22) and the liquid-blocking member (23) are both connected to the flexible adjusting member (21). The flexible sealing member (22) is sealed to the inner wall surface at the opening of the tank (1). The liquid-blocking member (23) is located on the side of the flexible sealing member (22) away from the opening of the tank (1) and abuts against the inner wall surface of the tank (1). The liquid-blocking member (23) is sleeved on the outer periphery of the stirring shaft (31) and rotatably connected to the stirring shaft (31).

7. The paint mixing device according to claim 6, characterized in that, The liquid-blocking unit (2) further includes a collection tray (24) and an adsorption element (25). The collection tray (24) is detachably disposed at the bottom of the flexible adjustment element (21) and is used to collect the splashed paint remaining in the flexible adjustment element (21). The adsorption element (25) is disposed in the collection tray (24) and is used to adsorb the splashed paint.

8. The paint mixing apparatus according to any one of claims 1-7, characterized in that, The gas-liquid separation unit (5) includes a collection pipe (51), a gas-liquid separation container (52), a spiral guide (53), an exhaust pipe (54), and a liquid collection tray (55). The first end of the collection pipe (51) is connected to the negative pressure generating unit (4), and the gas-liquid separation container (52) is connected to the second end of the collection pipe (51). The exhaust pipe (54) is connected above the gas-liquid separation container (52), and the liquid collection tray (55) is connected below it. The spiral guide (53) is disposed inside the gas-liquid separation container (52) and is used to separate the splashed paint and negative pressure airflow entering the gas-liquid separation container (52), so that the negative pressure airflow is discharged through the exhaust pipe (54), and the splashed paint flows into the liquid collection tray (55).

9. The paint mixing device according to claim 8, characterized in that, The inner wall of the gas-liquid separation container (52) is detachably provided with an anti-sticking component (521).

10. The paint mixing device according to claim 8, characterized in that, The gas-liquid separation unit (5) also includes a connecting pipe, one end of which is connected to the liquid collection tray (55) and the other end is connected to the inside of the tank (1).

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