Inorganic coating viscosity detection device

Abstract

The invention relates to the technical field of coating viscosity detection, in particular to an inorganic coating viscosity detection device which comprises a sampling mechanism, and the sampling mechanism comprises a connecting piece, a bubble removing mechanism and a multi-point sampling mechanism; the bubble removal mechanism comprises a removal channel, an extrusion structure and a release structure, and the removal channel is used for removing bubbles in a sample entering the channel; the multi-point sampling mechanism comprises a mounting frame and a plurality of sampling structures, the mounting frame is connected with the removal channel, a plurality of supporting arms are arranged on the mounting frame, the sampling structures are arranged on the supporting arms respectively, each sampling structure comprises a lifting arm, a sampling barrel and a flow guide pipe, the middle of each lifting arm is hinged to the corresponding supporting arm, each sampling barrel is arranged at one end of the corresponding lifting arm, and the flow guide pipe is arranged at the other end of the corresponding lifting arm. Two ends of the flow guide pipe are respectively connected with the bottom of the sampling barrel and the bottom of the removal channel; the bubble removing mechanism and the multi-point sampling mechanism are arranged, so that detection deviation caused by local characteristic difference of a single-point sample is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of paint viscosity detection, and in particular relates to an inorganic paint viscosity detection device. BACKGROUND

[0002] Inorganic paint is widely used in the fields of building, industrial corrosion prevention, electronic device packaging and the like due to excellent weather resistance, high temperature resistance and environmental protection performance. The viscosity of paint is a core index for measuring the construction performance and product quality of the paint, and directly determines the thickness uniformity, leveling property and adhesion of the coating. Therefore, the viscosity of the inorganic paint needs to be accurately detected in the production, storage and construction links of the inorganic paint, so as to ensure that the product meets the application standard.

[0003] The patent with the publication number CN118150403A discloses a viscosity detection equipment for paint production. The working principle is as follows: a production unit drives a stirring gear disc through a stirring motor to stir and mix paint raw materials, a lifting unit drives a lifting pipeline to move into a paint container by means of driving components such as a lifting cylinder and a rotary motor, so that the paint freely flows into the lifting pipeline. The paint is speed-adjusted and preliminarily defoamed by a main block and a secondary block driven by a micro motor, and then is further defoamed by a collection piece and a rolling and grinding extrusion piece. A detection unit drives a detection cup to tilt by means of a tilting cylinder, so that the paint flows into the detection cup smoothly. Finally, a detection motor drives a detection rod to rotate, and a torque sensor obtains viscosity data.

[0004] Although the above scheme realizes on-site detection of the viscosity of the paint and removal of bubbles, the sampling mode of the above scheme has limitations. The above scheme samples through a single set of lifting pipelines, which essentially belongs to a single-point sampling mode and cannot simultaneously collect samples in different regions for uniform mixing. Inorganic paint is prone to stratification and uneven local concentration due to differences in component density or too long standing time in the storage container. Single-point samples cannot reflect the overall characteristics of the paint, and are prone to misjudgment of local compliance and overall unqualification. SUMMARY

[0005] In view of the above problems, the application provides an inorganic paint viscosity detection device. The bubble removal mechanism and the multi-point sampling mechanism are arranged, so that the detection deviation caused by the local characteristic difference of the single-point sample is avoided.

[0006] In order to solve the prior art problems, the present application provides an inorganic coating viscosity detection device, which comprises a sampling mechanism for sampling and transferring the sample to the detection device body, the sampling mechanism comprising a connecting piece, a bubble removal mechanism and a multi-point sampling mechanism; the bubble removal mechanism comprising a removal channel, a pressing structure arranged at the upper end of the removal channel and a release structure arranged at the lower end of the removal channel, the removal channel being connected with the connecting piece, the removal channel being used for removing the bubbles in the sample entering the channel, the pressing structure being used for applying a downward extrusion force to the sample in the removal channel, and the release structure being used for releasing the sample after removing the bubbles; the multi-point sampling mechanism comprising a mounting frame and a plurality of sampling structures, the mounting frame being connected with the removal channel, a plurality of supporting arms being arranged on the mounting frame, and the plurality of sampling structures being arranged on the plurality of supporting arms respectively, the sampling structure comprising a lifting arm, a sampling bucket and a flow guide pipe, the middle part of the lifting arm being hinged with the supporting arm, the sampling bucket being arranged at one end of the lifting arm and being hinged with the lifting arm, and the two ends of the flow guide pipe being connected with the bottom of the sampling bucket and the bottom of the removal channel respectively.

[0007] Preferably, a plurality of first spiral grooves are arranged on the inner wall of the removal channel.

[0008] Preferably, the release structure comprises a bottom plate and a first electromagnetic valve; a release port is arranged in the middle part of the bottom plate, and a second converging groove converging towards the release port is arranged on the top of the bottom plate; the first electromagnetic valve is arranged at the release port and is used for controlling the opening and closing of the release port.

[0009] Preferably, a plurality of second spiral grooves are arranged on the second converging groove, and the plurality of second spiral grooves converge towards the release port.

[0010] Preferably, the pressing structure comprises a cover plate, a pressing driver and a pressing plate; the pressing driver is arranged in the middle part of the cover plate; the pressing plate is arranged in the removal channel, the diameter of the pressing plate is the same as the inner diameter of the removal channel, the middle part of the pressing plate is connected with the output end of the pressing driver, and a plurality of exhaust grooves are arranged around the pressing plate.

[0011] Preferably, the pressing structure further comprises a converging plate, the converging plate being arranged on the side of the pressing plate facing the bottom of the removal channel, and a first converging groove recessed towards the middle part of the converging plate being arranged in the middle part of the converging plate.

[0012] Preferably, the sampling structure further comprises a second electromagnetic valve, the second electromagnetic valve being arranged between the flow guide pipe and the removal channel, and the second electromagnetic valve being used for controlling the communication between the flow guide pipe and the removal channel.

[0013] Preferably, the sampling structure further comprises an inclination control block, the inclination control block being arranged at the bottom of the sampling bucket, and the inclination control block being used for controlling the pouring direction of the sampling bucket.

[0014] Preferably, the multi-point sampling mechanism further comprises a sampling driving structure, the sampling driving structure comprising a sampling driver, a driving ring and a plurality of driving arms; an output end of the sampling driver is connected with the driving ring; the plurality of driving arms correspond to the plurality of sampling structures respectively, and two ends of the driving arm are connected with the lifting arm and the driving ring respectively.

[0015] Preferably, the sampling driving structure further comprises a plurality of dynamic connection assemblies, the plurality of dynamic connection assemblies correspond to the plurality of driving arms respectively, and the dynamic connection assembly is used for changing the connection point between the driving arm and the driving ring in the moving state.

[0016] The beneficial effects of the present application compared with the prior art are: 1. The present application sets a bubble removal mechanism and a multi-point sampling mechanism, a plurality of sampling structures start a synchronous sampling action, the sampling barrels in each sampling structure gradually descend at a consistent speed, after sampling is completed, all the sampling barrels are synchronously lifted to a preset highest point, the paint in the sampling barrels flows directionally along the flow guide pipe under the action of gravity, and finally converges to the bottom of the removal channel of the bubble removal mechanism. Since the paints of a plurality of sampling points enter the removal channel at the same time, the samples in different regions are naturally mixed sufficiently in the channel. With continuous inflow of the paint, the liquid level in the removal channel gradually rises. In this process, the tiny bubbles wrapped in the paint gradually float to the liquid surface and break due to the buoyancy, realizing preliminary removal of the bubbles. Through the multi-point sampling mode, samples in different regions of the paint container can be obtained at the same time, and are naturally mixed in the removal channel, forming a composite sample with uniform composition, thereby avoiding detection deviation caused by local characteristic differences of a single-point sample.

[0017] 2. The present application opens a plurality of first spiral grooves on the inner wall of the removal channel, guides the paint to flow spirally in the feeding process through the plurality of first spiral grooves, and realizes efficient and directional separation of the bubbles by using physical centrifugal force, so that the bubble removal process and the paint feeding process are simultaneously performed, and the sample pretreatment efficiency is improved.

[0018] 3. The present application sets a bottom plate and a first electromagnetic valve, the first spiral groove on the inner wall of the removal channel converts linear flow into spiral flow, realizes secondary bubble removal by means of centrifugal force generated in the paint flow process, the second gathering groove changes the flow direction of the paint, restrains and converges the dispersed paint, forms a condensation force towards the release port, and forms double driving with the extrusion force of the extrusion structure, so that the paint flows out at a stable flow rate, thereby effectively avoiding the residue of the paint on the bottom plate, ensuring that the sample after bubble removal can be completely transferred, and preventing residual sample. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of a sampling mechanism in an inorganic paint viscosity detection device.

[0020] Figure 2 is a left view of a connecting piece, a bubble removing mechanism and a multi-point sampling mechanism in an inorganic coating viscosity detection device.

[0021] Figure 3 is Figure 2 is a stereoscopic sectional view of A-A in

[0022] Figure 4 is an exploded view of a removing channel, an extrusion structure and a releasing structure in an inorganic coating viscosity detection device.

[0023] Figure 5 is a stereoscopic view of a bottom plate and a first electromagnetic valve in an inorganic coating viscosity detection device.

[0024] Figure 6 is a stereoscopic view of a cover plate, an extrusion driver and an extrusion plate in an inorganic coating viscosity detection device.

[0025] Figure 7 is a stereoscopic sectional view of an extrusion plate and a gathering plate in an inorganic coating viscosity detection device.

[0026] Figure 8 is a stereoscopic view of a connecting piece, a removing channel, a sampling structure and a sampling driving structure in an inorganic coating viscosity detection device.

[0027] Figure 9 is a stereoscopic view of a lifting arm, a sampling bucket and an inclination control block in an inorganic coating viscosity detection device.

[0028] Figure 10 is a stereoscopic view of a connecting piece, a lifting arm, a sampling driver, a driving ring, a driving arm and a dynamic connecting assembly in an inorganic coating viscosity detection device.

[0029] Figure 11 is a stereoscopic view of a driving ring, a driving arm, a sliding block, a guide rod and a buffer spring in an inorganic coating viscosity detection device.

[0030] The figure marks are: 1, connecting piece; 2, bubble removing mechanism; 21, removing channel; 211, first spiral groove; 22, extrusion structure; 221, cover plate; 222, extrusion driver; 223, extrusion plate; 2231, exhaust groove; 224, gathering plate; 2241, first gathering groove; 23, releasing structure; 231, bottom plate; 2311, releasing port; 2312, second gathering groove; 2313, second spiral groove; 232, first electromagnetic valve; 3, multi-point sampling mechanism; 31, mounting frame; 311, support arm; 32, sampling structure; 321, lifting arm; 322, sampling bucket; 323, flow guide pipe; 324, second electromagnetic valve; 325, inclination control block; 33, sampling driving structure; 331, sampling driver; 332, driving ring; 333, driving arm; 334, dynamic connection assembly; 3341, sliding block; 3342, guide rod; 3343, buffer spring. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application will be described in detail below with reference to the drawings and specific embodiments.

[0032] Referring to Figures 1 to 11 As shown in the figure: an inorganic coating viscosity detection device, comprising a sampling mechanism for sampling and transferring the sample to the detection device body, the sampling mechanism comprising a connecting piece 1, a bubble removing mechanism 2 and a multi-point sampling mechanism 3; the bubble removing mechanism 2 comprises a removing channel 21, an extrusion structure 22 arranged at the upper end of the removing channel 21 and a releasing structure 23 arranged at the lower end of the removing channel 21, the removing channel 21 is connected with the connecting piece 1, the removing channel 21 is used for removing the bubbles in the sample entering the channel, the extrusion structure 22 is used for applying downward extrusion force to the sample in the removing channel 21, and the releasing structure 23 is used for releasing the sample after removing the bubbles; the multi-point sampling mechanism 3 comprises a mounting frame 31 and a plurality of sampling structures 32, the mounting frame 31 is connected with the removing channel 21, a plurality of support arms 311 are arranged on the mounting frame 31, and a plurality of sampling structures 32 are arranged on the plurality of support arms 311 respectively, the sampling structure 32 comprises a lifting arm 321, a sampling bucket 322 and a flow guide pipe 323, the middle part of the lifting arm 321 is hinged with the support arm 311, the sampling bucket 322 is arranged at one end of the lifting arm 321 and is hinged with the lifting arm 321, and the two ends of the flow guide pipe 323 are connected with the bottom of the sampling bucket 322 and the bottom of the removing channel 21 respectively.

[0033] When the viscosity of the inorganic coating needs to be detected, the sampling mechanism first enters the working preparation state, at this time the extrusion structure 22 of the bubble removal mechanism 2 is in the upper position, the release structure 23 remains closed, ensuring that the removal channel 21 inside forms a space to be fed, and the multiple sampling structures 32 of the multi-point sampling mechanism 3 are all in the initial state, the end of the lifting arm 321 on which the sampling bucket 322 is installed is in the high position, and the sampling bucket 322 does not contact the coating liquid surface. Subsequently, the multi-point sampling structure 32 starts the synchronous sampling action, and the lifting arm 321 of each sampling structure 32 synchronously rotates downward around the hinge point with the supporting arm 311, driving the sampling bucket 322 installed at the end of the lifting arm 321 to gradually descend and immerse below the coating liquid surface. When the sampling bucket 322 is completely immersed and filled with coating, the lifting arm 321 reverses around the hinge point, synchronously raising the sampling bucket 322 loaded with the coating sample to the preset highest point. When all the sampling buckets 322 are synchronously raised to the preset highest point, the coating in the sampling bucket 322 starts to flow along the flow guide pipe 323 under the action of gravity, and finally converges at the bottom of the removal channel 21 of the bubble removal mechanism 2. Since the coatings at multiple sampling points enter the removal channel 21 at the same time, the samples at different positions naturally mix in the channel. With the continuous inflow of the coating, the liquid level in the removal channel 21 gradually rises, and in the process of liquid level rising and sample mixing, the tiny bubbles entrained in the coating gradually float to the liquid surface and break due to the action of buoyancy, achieving preliminary removal of bubbles and eliminating bubble interference for subsequent viscosity detection. When the liquid level of the coating in the removal channel 21 reaches the preset height, the sampling structure 32 stops feeding. Then, the extrusion structure 22 of the bubble removal mechanism 2 works cooperatively with the release structure 23. The extrusion structure 22 acts downward to apply a stable downward extrusion force to the coating in the removal channel 21, further compressing the possible residual tiny bubbles and promoting the rapid flow of the coating. At the same time, the release structure 23 is opened, and the uniform coating after mixing and bubble removal flows smoothly from the release structure 23 under the combined action of extrusion force and gravity, and is transferred to the detection device body. Subsequently, the detection device body starts the viscosity detection program. Through the multi-point sampling method, samples at different positions in the coating container can be obtained simultaneously and naturally mixed in the removal channel 21 to form a composite sample with uniform composition, thereby avoiding the detection deviation caused by the local characteristic differences of single-point samples.

[0034] Referring to Figure 3 and Figure 4 It is shown that a plurality of first spiral grooves 211 are formed on the inner wall of the removal channel 21.

[0035] The coating gradually accumulates in the removal channel 21, and the liquid level begins to slowly rise. When the coating liquid level rises to contact the starting end of the first spiral groove 211, the flow path is forced to be guided by the first spiral groove 211. With the continuous inflow of subsequent coating, the coating in the removal channel 21 flows upward along the track of the first spiral groove 211 under the action of pressure, forming a stable spiral rising state. This flow mode makes the entire coating liquid column produce a rotating motion around the center axis of the channel, thereby forming a centrifugal field inside the liquid. The small bubbles originally entrained in the coating are subjected to significant centrifugal force during the rotation process. The centrifugal force pushes the bubbles to move in a direction with a larger radius of rotation, i.e., towards the inner wall of the removal channel 21. At the same time, the bubbles themselves are affected by the buoyancy and continue to float upward. Under the dual action of centrifugal force and buoyancy, the bubbles that gather near the inner wall of the channel quickly move upward along the inner wall and eventually break through the coating liquid surface to contact air and dissipate. In the middle region of the coating liquid column, the coating with a higher density is left in this region by the centrifugal force, and the bubbles are continuously separated from the inner wall, gradually forming a pure coating column without bubbles. When the liquid level in the removal channel 21 rises to the preset position, the sampling mechanism stops feeding. At this time, a bubble-free coating region that meets the detection requirements has been formed in the middle of the channel. Then, the extrusion structure 22 moves downward to apply uniform pressure to the coating in the channel, further extruding possible small bubbles, and the release structure 23 is opened. The bubble-free coating in the middle region flows smoothly from the release structure 23 under the combined action of pressure and gravity. The first spiral grooves 211 guide the spiral flow of the coating during the feeding process, and the physical centrifugal force realizes efficient and directional separation of bubbles, thereby realizing the synchronous performance of the defoaming process and the coating feeding process and improving the sample pretreatment efficiency.

[0036] Referring to Figure 3 and Figure 5 As shown in the drawings: the release structure 23 includes a bottom plate 231 and a first electromagnetic valve 232. The middle part of the bottom plate 231 is provided with a release port 2311, and the top part of the bottom plate 231 is provided with a second converging groove 2312 that converges towards the release port 2311. The first electromagnetic valve 232 is arranged at the release port 2311 and is used to control the opening and closing of the release port 2311.

[0037] When the sample coating needs to be transferred to the main body of the testing device, the extrusion structure 22 applies a uniform and continuous downward extrusion force to the coating in the removal channel 21. At the same time, the first solenoid valve 232 opens the release port 2311 in the middle of the base plate 231. Under the action of the extrusion force, the coating in the removal channel 21 begins to flow towards the release port 2311. The multiple first spiral grooves 211 on the inner wall of the removal channel 21 guide the coating to form a spiral downward flow. During the spiral downward process, the coating rotates around the central axis of the removal channel 21 to form a centrifugal force field. Any trace bubbles that may remain in the coating are pushed towards the inner wall of the channel again under the action of centrifugal force, and then float upward under the action of buoyancy and the flow of the coating. Finally, the coating breaks upon contact with air, achieving secondary defoaming of the sample. When the coating after secondary defoaming flows to the top of the base plate 231, the second gathering groove 2312 on the base plate 231 changes the flow direction of the coating, constraining and converging the coating to the release port 2311. At the same time, it forms a cohesive force towards the release port 2311, preventing the coating from remaining on the surface of the base plate 231 or spreading along a non-target path. Under the dual drive of extrusion pressure and cohesive force, the coating after secondary defoaming flows out through the release port 2311 at a stable flow rate. The coating is gathered by the second gathering groove 2312, thereby effectively preventing the coating from remaining on the base plate 231, ensuring that the defoamed sample can be completely transferred and preventing residual sample.

[0038] Reference Figure 3 and Figure 5 As shown: Multiple second spiral grooves 2313 are opened on the second gathering groove 2312, and the multiple second spiral grooves 2313 converge toward the release port 2311.

[0039] Specifically, the spiral direction of the second spiral groove 2313 is the same as that of the first spiral groove 211, and the groove width of the second spiral groove 2313 is smaller than that of the first spiral groove 211.

[0040] When the coating reaches the top of the base plate 231, the second gathering groove 2312 on the base plate 231 first acts as a converging channel, confining the dispersed coating within the groove. Since the second gathering groove 2312 has multiple second spiral grooves 2313 that converge towards the release port 2311, and their spiral direction is consistent with the first spiral groove 211, the coating naturally enters the second spiral grooves 2313 under the pressure of compression. Guided by the channel trajectory of the second spiral grooves 2313, the coating flows spirally along the groove towards the release port 2311. The same spiral direction causes the coating to flow from the release port 2311... In addition to the smoother transition from spiral descent in channel 21 to spiral flow in the second gathering groove 2312, which avoids resistance caused by sudden changes in flow pattern, the narrower groove width imposes certain constraints on the coating, making the extrusion pressure on the coating per unit area more concentrated. This spiral flow state not only continues the rotational inertia of the coating, but also converts the rotational kinetic energy into forward momentum toward the release port 2311 through the converging characteristics of the channel, allowing the coating to accelerate and converge in the second gathering groove 2312 in a spiral downward posture, thereby increasing the flow speed of the coating and effectively preventing the coating from stagnating in the groove.

[0041] Reference Figure 3 and Figure 6 As shown: the extrusion structure 22 includes a cover plate 221, an extrusion driver 222, and an extrusion plate 223; the extrusion driver 222 is disposed in the middle of the cover plate 221; the extrusion plate 223 is disposed in the removal channel 21, and the diameter of the extrusion plate 223 is the same as the inner diameter of the removal channel 21; the middle of the extrusion plate 223 is connected to the output end of the extrusion driver 222; and multiple exhaust grooves 2231 are provided around the extrusion plate 223.

[0042] As the coating spirals upward along the first spiral groove 211 on the inner wall of the removal channel 21, under the action of centrifugal force, the air bubbles in the coating are pushed towards the inner wall of the removal channel 21 and gradually rise upward. The air bubbles are discharged upward from the exhaust groove 2231. When the coating liquid level in the removal channel 21 continues to rise to the preset highest point, the extrusion actuator 222 in the extrusion structure 22 continuously provides a downward thrust to the extrusion plate 223. When the lower surface of the extrusion plate 223 contacts the coating liquid level, the thrust is transmitted to the interior of the coating through the extrusion plate 223, forming a uniform pressure field. Under this pressure, the coating in the removal channel 21 is forced downward. When the coating is a high-viscosity coating, the extrusion actuator 222 can increase the thrust on the extrusion plate 223 to ensure that the coating is discharged smoothly. When the coating is a low-viscosity coating, the extrusion actuator 222 can reduce the thrust on the extrusion plate 223, thereby achieving controllable coating discharge speed.

[0043] Reference Figure 3 and Figure 7As shown: the extrusion structure 22 also includes a gathering plate 224, which is disposed on the side of the extrusion plate 223 facing the bottom of the removal channel 21, and a first gathering groove 2241 recessed towards its own center is provided in the middle of the gathering plate 224.

[0044] When the extrusion plate 223 descends to contact the coating, the coating in direct contact with the extrusion plate 223 flows disorderly along the lower surface of the extrusion plate 223, causing the coating to flow towards the venting grooves 2231 around the extrusion plate 223. This disperses the thrust of the extrusion plate 223 on the coating. By setting a gathering plate 224 on the side of the extrusion plate 223 facing the bottom of the removal channel 21, when the lower surface of the gathering plate 224 contacts the coating liquid surface, the first gathering groove 2241 on its surface generates a centripetal gathering force on the contacting coating, changing the natural flow trend of the coating. The coating is guided to the middle area of ​​the coating liquid column and concentrated, thereby effectively reducing the amount of coating flowing towards the venting grooves 2231 around the extrusion plate 223.

[0045] Reference Figure 3 and Figure 8 As shown: The sampling structure 32 also includes a second solenoid valve 324, which is disposed between the guide tube 323 and the removal channel 21. The second solenoid valve 324 is used to control the connection between the guide tube 323 and the removal channel 21.

[0046] When sampling is performed in sampling barrel 322, the second solenoid valve 324 is in the open state, and the guide pipe 323 connects sampling barrel 322 and removal channel 21. At this time, during the sampling process, the air in sampling barrel 322 can be discharged through guide pipe 323 and removal channel 21, which is beneficial to sampling. After sampling is completed, the second solenoid valve 324 is closed to prevent the paint in sampling barrel 322 from flowing to removal channel 21 during the rising process. When multiple sampling barrels 322 have risen to the highest point, the second solenoid valves 324 in all sampling structures 32 are opened, and the paint in multiple sampling barrels 322 flows towards removal channel 21 at the same time. After the paint liquid level in removal channel 21 rises to the highest point, all second solenoid valves 324 are closed to prevent the paint in removal channel 21 from being squeezed back into sampling barrel 322, thereby controlling the flow direction of paint between sampling barrel 322 and removal channel 21.

[0047] Reference Figure 8 and Figure 9 As shown: The sampling structure 32 also includes a tilt control block 325, which is located at the bottom of the sampling bucket 322 and is used to control the tilting direction.

[0048] Before the sampling process is started, the sampling bucket 322 is empty. Due to the tilt control block 325 installed at the bottom, its gravity distribution is asymmetrical. Combined with the hinge relationship between the sampling bucket 322 and the lifting arm 321, the sampling bucket 322 naturally rotates around the hinge point to form a stable preset tilt angle, so that the opening of the sampling bucket 322 presents a fixed posture with one side lower and the other side higher. When the lifting arm 321 drives the sampling bucket 322 to descend, the lower side of the opening of the sampling bucket 322 is immersed in the paint. Under the action of gravity, the paint gradually fills the lower space of the bucket. At this time, the air in the sampling bucket 322 needs to be discharged outward due to the pressure of the paint. Since the sampling bucket 322 is tilted, the air naturally gathers to the higher side of the opening, which is conducive to the rapid discharge of air from the bucket during the sampling process.

[0049] Reference Figure 3 , Figure 8 and Figure 10 As shown: The multi-point sampling mechanism 3 also includes a sampling drive structure 33, which includes a sampling driver 331, a drive ring 332 and multiple drive arms 333; the output end of the sampling driver 331 is connected to the drive ring 332; the multiple drive arms 333 correspond to the multiple sampling structures 32 respectively, and the two ends of the drive arms 333 are connected to the lifting arm 321 and the drive ring 332 respectively.

[0050] When the sampling bucket 322 needs to be lowered to collect material, the sampling actuator 331 generates an upward driving force on the drive ring 332 along the axis of the removal channel 21, pushing the drive ring 332 to rise smoothly along the axial direction. Since one end of each of the multiple drive arms 333 is hinged to the drive ring 332, the upward movement of the drive ring 332 is synchronously transmitted to all drive arms 333, causing each drive arm 333 to apply an equal force to the connected lifting arm 321. The lifting arm 321 rotates synchronously downward around its hinge point with the support arm 311, driving the sampling bucket 322 installed at the end of the lifting arm 321 to approach the paint surface at the same speed and trajectory. During this process, the drive ring 332 always maintains a straight line along the axis. The linear motion ensures that the force and movement amplitude of each drive arm 333 are highly consistent, enabling all sampling buckets 322 to synchronously contact the paint surface. After all sampling buckets 322 have completed sampling and are filled with paint, the sampling driver 331 generates a downward driving force on the drive ring 332 along the axis of the removal channel 21, pushing the drive ring 332 to descend smoothly from a high position along the axis, thereby driving the sampling buckets 322 filled with paint to rise upward at the same speed. The rising height and speed of each sampling bucket 322 remain consistent until all sampling buckets 322 synchronously rise to the preset highest point. Then, the sampling driver 331 stops, and the drive ring 332 remains stably at the high position, thus realizing the synchronous operation of multiple sampling buckets 322.

[0051] Reference Figure 10 andFigure 11 As shown: The sampling drive structure 33 also includes multiple dynamic connection components 334, which correspond to multiple drive arms 333 respectively, and the dynamic connection components 334 are used to change the connection point between the drive arm 333 and the drive ring 332 in the moving state.

[0052] Specifically, the dynamic connection component 334 includes a slider 3341 and multiple guide rods 3342. The slider 3341 is connected to one end of the drive arm 333. The multiple guide rods 3342 are parallel to each other. One end of the guide rods 3342 is connected to the drive ring 332. The slider 3341 is slidably connected to the multiple guide rods 3342. A buffer spring 3343 is sleeved on the end of the guide rod 3342 away from the drive ring 332.

[0053] When the lifting arm 321 rotates around its hinge point with the support arm 311, the end of the lifting arm 321 connected to the drive arm 333 will perform a circular motion around the hinge point. This causes the drive arm 333 to constantly adjust its position to adapt to the rotation of the lifting arm 321. Therefore, a dynamic connection component 334 is provided. During the rotation of the lifting arm 321, the lifting arm 321 drives the drive arm 333 and the slider 3341 to move along the guide rod 3342. Multiple guide rods 3342 can maintain the moving posture of the slider. When the sampling bucket 322 at one end of the lifting arm 321 descends, the lifting arm 321 drives the slider 3341 through the drive arm 333. Block 3341 moves along guide rod 3342 toward the end away from mounting ring. When slider 3341 contacts buffer spring 3343, the moving speed of slider 3341 is reduced, which reduces the rotation speed of lifting arm 321, thereby reducing the speed of sampling bucket 322 when it contacts paint. By sliding slider 3341 along guide rod 3342, the positional deviation caused by the circumferential motion of lifting arm 321 is compensated in real time, so that the linear motion of drive ring 332 is connected with the rotation of lifting arm 321, thereby avoiding jamming or rigid damage to drive arm 333 and lifting arm 321, and improving the smoothness and reliability of mechanism movement.

[0054] The above embodiments only illustrate one or more implementation methods of this invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these all fall within the protection scope of this invention. Therefore, the protection scope of this invention should be determined by the appended claims.

Claims

1. An inorganic coating viscosity testing device, comprising a sampling mechanism for sampling and transferring samples to the testing device body, characterized in that, The sampling mechanism includes a connector (1), a bubble removal mechanism (2), and a multi-point sampling mechanism (3); The bubble removal mechanism (2) includes a removal channel (21), a squeezing structure (22) disposed at the upper end of the removal channel (21), and a release structure (23) disposed at the lower end of the removal channel (21). The removal channel (21) is connected to the connector (1). The removal channel (21) is used to remove bubbles from the sample entering the channel. The squeezing structure (22) is used to apply downward squeezing force to the sample in the removal channel (21). The release structure (23) is used to release the sample after bubble removal. The multi-point sampling mechanism (3) includes a mounting frame (31) and multiple sampling structures (32). The mounting frame (31) is connected to the removal channel (21). Multiple support arms (311) are provided on the mounting frame (31). Multiple sampling structures (32) are respectively provided on the multiple support arms (311). The sampling structure (32) includes a lifting arm (321), a sampling bucket (322) and a guide tube (323). The middle part of the lifting arm (321) is hinged to the support arm (311). The sampling bucket (322) is provided at one end of the lifting arm (321) and is hinged to the lifting arm (321). The two ends of the guide tube (323) are respectively connected to the bottom of the sampling bucket (322) and the bottom of the removal channel (21).

2. The inorganic coating viscosity testing device according to claim 1, characterized in that, Multiple first spiral grooves (211) are provided on the inner wall of the removal channel (21).

3. The inorganic coating viscosity testing device according to claim 1, characterized in that, The release structure (23) includes a base plate (231) and a first solenoid valve (232); A release port (2311) is provided in the middle of the base plate (231), and a second gathering groove (2312) is provided at the top of the base plate (231) and converges toward the release port (2311). The first solenoid valve (232) is located at the release port (2311) and is used to control the opening and closing of the release port (2311).

4. The inorganic coating viscosity testing device according to claim 3, characterized in that, Multiple second spiral grooves (2313) are opened on the second gathering groove (2312), and the multiple second spiral grooves (2313) converge toward the release port (2311).

5. The inorganic coating viscosity testing device according to claim 1, characterized in that, The extrusion structure (22) includes a cover plate (221), an extrusion actuator (222), and an extrusion plate (223). The extrusion actuator (222) is located in the middle of the cover plate (221); The extrusion plate (223) is set in the removal channel (21), and the diameter of the extrusion plate (223) is the same as the inner diameter of the removal channel (21). The middle part of the extrusion plate (223) is connected to the output end of the extrusion driver (222), and multiple exhaust grooves (2231) are opened around the extrusion plate (223).

6. The inorganic coating viscosity testing device according to claim 5, characterized in that, The extrusion structure (22) also includes a gathering plate (224), which is disposed on the side of the extrusion plate (223) facing the bottom of the removal channel (21), and a first gathering groove (2241) is provided in the middle of the gathering plate (224) and recessed towards its own center.

7. The inorganic coating viscosity testing device according to claim 1, characterized in that, The sampling structure (32) also includes a second solenoid valve (324), which is disposed between the guide tube (323) and the removal channel (21). The second solenoid valve (324) is used to control the connection between the guide tube (323) and the removal channel (21).

8. The inorganic coating viscosity testing device according to claim 7, characterized in that, The sampling structure (32) also includes a tilt control block (325), which is located at the bottom of the sampling bucket (322) and is used to control the tilting direction of the sampling bucket (322).

9. The inorganic coating viscosity testing device according to claim 1, characterized in that, The multi-point sampling mechanism (3) also includes a sampling drive structure (33), which includes a sampling driver (331), a drive ring (332), and multiple drive arms (333). The output of the sampling driver (331) is connected to the drive ring (332); Multiple drive arms (333) correspond to multiple sampling structures (32) respectively, and the two ends of the drive arms (333) are connected to the lifting arm (321) and the drive ring (332) respectively.

10. An inorganic coating viscosity testing device according to claim 9, characterized in that, The sampling drive structure (33) also includes multiple dynamic connection components (334), which correspond to multiple drive arms (333) respectively, and the dynamic connection components (334) are used to change the connection point between the drive arm (333) and the drive ring (332) in the moving state.

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