Water-based paint detection sampling device and method

Abstract

The present application relates to the technical field of water-based paint detection, in particular to a water-based paint detection sampling device, which comprises a machine box, a control box, a sampling box, a sampling cylinder and a connecting frame, the control box is arranged on the machine box, the sampling box is movably arranged on the machine box through the connecting frame, and the sampling cylinder is arranged on the sampling box, the sampling device further comprises a connecting box which is movably arranged on the machine box and communicates with the sampling box, a plurality of cavities are arranged in the connecting box in a ring shape, a bottom box is arranged on the machine box and communicates with the cavities, the bottom box communicates with the sampling box through a first telescopic pipe, sample storage bottles are arranged on the connecting box in a ring shape, the sample storage bottles and the cavities are one-to-one corresponding and communicate with each other, a sampling driving system is arranged in the machine box and connected with a pull rod, the whole device has high automation degree, compared with the traditional single sampling mode, the device can realize multiple bottle sampling work at a time, and it is convenient to use different kinds of detection reagents to detect the same water-based paint sample.

Description

Technical Field

[0001] This invention relates to the field of water-based paint testing technology, and more specifically, to a water-based paint testing and sampling device. Background Technology

[0002] In recent years, with the increasing awareness of environmental protection and the introduction of relevant government environmental protection policies, water-based paints have ushered in a great opportunity for development. Compared with oil-based paints, which are still widely used, water-based paints have the following advantages: using water as a solvent saves a lot of resources; eliminates the risk of fire in production and construction; uses only a small amount of low-toxicity alcohol ether organic solvents, significantly improving production and construction conditions; can be directly applied to wet surfaces and in humid environments; and painting tools can be directly washed with water, reducing the consumption of cleaning solvents.

[0003] After the water-based paint is produced, it needs to be sampled and tested using a sampling device to determine whether the quality of the water-based paint meets the standards. Existing water-based paint sampling devices have the following drawbacks:

[0004] Traditional water-based paint sampling devices have a simple structure, can only take one sample per operation and are stored in a single sampling bottle. When multiple test reagents are needed to test the same sample, multiple sampling operations are required, which is very time-consuming. In addition, the paint tends to stick to the inner wall of the sampling head when it passes through it. If it is not cleaned in time, it can affect subsequent sampling operations. Summary of the Invention

[0005] The purpose of this invention is to provide a water-based paint testing and sampling device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A water-based paint testing and sampling device includes a chassis, a control box, a sampling box, a sampling cylinder, and a connecting frame. The control box is mounted on the chassis. The sampling box is movably mounted on the chassis via the connecting frame. The sampling cylinder is mounted on the sampling box. A piston is movably mounted inside the sampling box and elastically connected to it. A pull rod connected to the piston is movably mounted on the sampling box. The sampling device further includes:

[0008] A connecting box is movably mounted on the chassis and communicates with the sampling box. The connecting box has several cavities arranged around its interior.

[0009] The bottom box is mounted on the chassis and communicates with the cavity. The bottom box is connected to the sampling box through a telescopic pipe No. 1.

[0010] A number of sample bottles are arranged in a ring around the connecting box, and the sample bottles and the cavity are in one-to-one correspondence and communication.

[0011] The sampling drive system, located inside the chassis and connected to the pull rod, controls the movement of the pull rod and can drive the connecting box to rotate; wherein...

[0012] The sampling drive system includes:

[0013] The hinge is movably mounted inside the chassis.

[0014] Motor No. 1 is mounted on the chassis and connected to the rotating shaft;

[0015] The sampling execution module, housed within the chassis, connects the rotating shaft and the pull rod, and is used to adjust the position of the pull rod; and

[0016] An adjustment component is installed on the chassis and connects the rotating shaft and the connecting box. When the rotating shaft moves, the adjustment component controls the rotation of the connecting box.

[0017] A further technical solution of this application: the sampling execution module includes:

[0018] The adjusting shaft is movably mounted inside the chassis and connected to the rotating shaft;

[0019] A rotating head, which is movably sleeved on a connecting shaft;

[0020] The movable seat is located at the end of the pull rod furthest from the first piston; and

[0021] The drive arm is movably connected between the rotating head and the moving seat.

[0022] A further technical solution of this application: the shape of the adjustment shaft is U-shaped.

[0023] A further technical solution of this application: the sampling execution module also includes a cleaning structure, which is disposed between the adjusting shaft and the sampling cylinder, for cleaning the inner wall of the sampling cylinder.

[0024] A further technical solution of this application: the cleaning structure includes:

[0025] The cleaning seat is movable inside the sampling cylinder;

[0026] A movable frame is movably positioned between the sampling tube and the sampling box, and a connecting rod is provided on the movable frame;

[0027] Magnets are provided on both the cleaning seat and the movable frame;

[0028] A cylinder, movably mounted on the chassis via a mounting bracket, wherein the movable end of the cylinder is connected to a connecting rod; and

[0029] A transmission unit is installed between the cylinder and the adjusting shaft. When the adjusting shaft moves, the transmission unit controls the extension and retraction of the cylinder.

[0030] A further technical solution of this application: the transmission unit includes an air box, a second piston, a trapezoidal disc, and a contact head;

[0031] The air box is mounted on the machine casing and connected to the cylinder via the second telescopic tube. The trapezoidal disc is movably mounted inside the air box and connected to the adjusting shaft. The second piston is movably mounted inside the air box and the two are elastically connected. The contact head is located at the eccentric position of the second piston and slides in cooperation with the inclined surface formed on the trapezoidal disc.

[0032] A further technical solution of this application is: a resistance-reducing component is provided between the inclined surfaces of the abutment rod and the trapezoidal disk to reduce the frictional resistance between the abutment rod and the trapezoidal disk.

[0033] A further technical solution of this application: the positioning component includes:

[0034] The gear is movably mounted on the chassis and coaxially connected to the rotating shaft;

[0035] Gear ring 31, movably mounted on the chassis and connected to the connector box; and

[0036] The differential is mounted on the chassis and connects the gear and the gear ring 31.

[0037] A further technical solution of this application: the adjustment shaft is movably connected by a retaining shaft, a rotating shaft, and a trapezoidal disc; a threaded rod is movably arranged inside the housing; a second motor is arranged on the housing; the output end of the second motor is connected to the threaded rod; the threaded rod passes through the mounting bracket and the two are threadedly engaged.

[0038] A sampling method for detecting water-based paints, comprising the water-based paint detection and sampling device described in the above technical solution, wherein the specific steps of the sampling method are as follows:

[0039] S100: By placing the paint can directly below the sampling tube, inserting the sampling tube into the paint can, and controlling the No. 1 motor to rotate via the control box;

[0040] S200: When the No. 1 motor rotates, it can drive the rotating shaft to rotate. The rotation of the rotating shaft drives the sampling execution module to work, thereby driving the pull rod to reciprocate relative to the sampling box, drawing the water-based paint in the paint can into the sampling box and finally inputting it into the storage bottle through the No. 1 telescopic tube, the bottom box and the connecting box.

[0041] S300: While the rotating shaft is rotating, it can drive the adjustment component to work synchronously, which in turn drives the connecting box to rotate, so that the cavities at different positions on the connecting box are connected to the bottom box in sequence, thereby enabling sampling work for multiple bottle storage.

[0042] Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following beneficial effects:

[0043] This invention, through the inclusion of a sampling execution module, a cleaning structure, and a positioning component, utilizes a linked mechanical structure. By controlling the rotation of a primary motor, the positioning shaft can be driven to rotate simultaneously. This not only enables the sampling of water-based paint from the storage tank but also controls the transmission unit and cylinder extension / retraction during the shaft's rotation. This causes the cleaning seat to reciprocate within the sampling cylinder, cleaning its inner wall and preventing paint residue from adhering to the inner wall and affecting subsequent sampling. Furthermore, the rotating shaft drives the positioning component, allowing sampling bottles at different positions to connect sequentially to the sampling box, enabling multiple sampling operations. The entire device boasts a high degree of automation. Compared to traditional single-sampling methods, this device can perform multiple sampling operations in a single operation, facilitating the use of different types of testing reagents to test the same water-based paint sample. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the water-based paint detection and sampling device in an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the internal structure of the water-based paint detection and sampling device in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the sampling execution module in the water-based paint detection and sampling device in an embodiment of the present invention;

[0047] Figure 4 This is a partial structural diagram of the cleaning structure in the water-based paint detection and sampling device of this embodiment of the invention;

[0048] Figure 5 This is an enlarged structural schematic diagram of point A in the water-based paint detection and sampling device in this embodiment of the invention;

[0049] Figure 6 This is a schematic diagram of the transmission unit in the water-based paint detection and sampling device in an embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of the adjustment component in the water-based paint detection and sampling device in an embodiment of the present invention;

[0051] Figure 8 This is a partial cross-sectional view of the adjustment component in the water-based paint detection and sampling device in an embodiment of the present invention.

[0052] Explanation of the labels in the diagram:

[0053] 1-Chassis, 2-Control box, 3-Sampling box, 4-Sampling cylinder, 5-Moving frame, 6-Connecting rod, 7-Pull rod, 8-Moving seat, 9-Cylinder, 10-Piston No. 1, 11-Cleaning seat, 12-Magnet, 13-Sampling bottle, 14-Telescopic tube No. 1, 15-Telescopic tube No. 2, 16-Inflation box, 17-Motor No. 1, 18-Gear, 19-Shaft, 20-Mounting frame, 21-Connecting frame, 22-Adjusting shaft, 23-Rotating head, 24-Drive arm, 25-Threaded rod, 26-Motor No. 2, 27-Clamping shaft, 28-Piston No. 2, 29-Trapezoidal disc, 30-Differential gear, 31-Gear ring, 32-Connecting box, 33-Base box, 34-Cavity, 35-Abutting rod, 36-Ball bearing. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described below with reference to the embodiments.

[0055] Please see Figures 1-8 In one embodiment of this application, a water-based paint testing and sampling device includes a chassis 1, a control box 2, a sampling box 3, a sampling cylinder 4, and a connecting frame 21. The control box 2 is mounted on the chassis 1. The sampling box 3 is movably mounted on the chassis 1 via the connecting frame 21. The sampling cylinder 4 is mounted on the sampling box 3. A piston 10 is movably mounted inside the sampling box 3 and the two are elastically connected. A pull rod 7 connected to the piston 10 is movably mounted on the sampling box 3. The sampling device further includes:

[0056] The connecting box 32 is movably mounted on the chassis 1 and communicates with the sampling box 3. The connecting box 32 has a plurality of cavities 34 arranged around its interior.

[0057] The bottom box 33 is installed on the chassis 1 and communicates with the cavity 34. The bottom box 33 is connected to the sampling box 3 through the first telescopic pipe 14.

[0058] There are several sample bottles 13 arranged in a ring around the connecting box 32. The sample bottles 13 and the cavity 34 are in one-to-one correspondence and connected.

[0059] The sampling drive system, housed within the chassis 1 and connected to the pull rod 7, controls the movement of the pull rod 7 and can drive the connecting box 32 to rotate; wherein...

[0060] The sampling drive system includes:

[0061] The hinge 19 is movably mounted inside the chassis 1;

[0062] Motor 17 is mounted on the housing 1 and connected to the rotating shaft 19;

[0063] The sampling execution module, located inside the chassis 1, connects the rotating shaft 19 and the pull rod 7, and is used to adjust the position of the pull rod 7; and

[0064] An adjustment component is installed on the chassis 1 and connects the rotating shaft 19 and the connecting box 32. When the rotating shaft 19 moves, the adjustment component controls the rotation of the connecting box 32.

[0065] In one specific embodiment, the sampling execution module includes:

[0066] The adjusting shaft is movably disposed within the housing 1 and connected to the rotating shaft 19;

[0067] Rotating head 23, which is movably sleeved on the connecting shaft;

[0068] The movable seat 8 is located at the end of the pull rod 7 furthest from the first piston 10; and

[0069] The drive arm 24 is movably connected between the rotating head 23 and the movable seat 8.

[0070] In another specific instance of this embodiment, the adjusting shaft is U-shaped.

[0071] It should be noted that this embodiment is not limited to the sampling execution module mentioned above for adjusting the position of the lever 7. A linear motor or electric cylinder can also be used to drive it, as long as it can achieve the adjustment of the position of the lever 7. These will not be listed one by one here.

[0072] In practical applications, the gas storage tank is placed directly below the sampling cylinder 4, and the sampling cylinder 4 is inserted into the gas storage tank. The control box 2 controls the first motor 17 to rotate, which drives the rotating shaft 19 to rotate. During the rotation of the rotating shaft 19, the adjusting shaft 22 can be rotated. Since the adjusting shaft 22 is U-shaped, it can drive the rotating head 23 to reciprocate. Under the action of the drive arm 24 and the moving seat 8, the pull rod 7 and the first piston 10 are driven to reciprocate along the sampling box 3, thereby drawing the water-based paint in the gas storage tank into the sampling box 3, and finally into the cavity 34 through the first telescopic tube 14 and the bottom box 33, and finally into the sample bottle 13. At the same time as the rotating shaft 19 rotates, the adjusting component can work synchronously, driving the connecting box 32 to rotate, so that the cavities 34 at different positions are connected to the bottom box 33 in turn, realizing the adjustment of the position of the sample bottle 13, and thus realizing the work of multiple sampling and separate storage.

[0073] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As another preferred embodiment of this application, the sampling execution module further includes a cleaning structure disposed between the adjusting shaft and the sampling cylinder 4 for cleaning the inner wall of the sampling cylinder 4.

[0074] In one specific embodiment of this invention, the cleaning structure includes:

[0075] The cleaning seat 11 is movable inside the sampling tube 4;

[0076] A movable frame 5 is movably positioned between the sampling cylinder 4 and the sampling box 3, and a connecting rod 6 is provided on the movable frame 5;

[0077] Magnet 12: Both the cleaning seat 11 and the movable frame 5 are provided with magnets 12 that attract each other when they meet.

[0078] Cylinder 9 is movably mounted on housing 1 via mounting bracket 20, and the movable end of cylinder 9 is connected to connecting rod 6; and

[0079] A transmission unit is installed between the cylinder 9 and the adjusting shaft. When the adjusting shaft moves, the transmission unit controls the extension and retraction of the cylinder 9.

[0080] In another specific embodiment, the transmission unit includes an air box 16, a second piston 28, a trapezoidal disc 29, and a contact head;

[0081] The air box 16 is mounted on the housing 1 and is connected to the cylinder 9 via the second telescopic tube 15. The trapezoidal disk 29 is movably mounted inside the air box 16 and is connected to the adjusting shaft 22. The second piston 28 is movably mounted inside the air box 16 and the two are elastically connected. The contact head is located at the eccentric position of the second piston 28 and slides in cooperation with the inclined surface formed on the trapezoidal disk 29.

[0082] It should be noted that a friction-reducing component is provided between the inclined surfaces of the contact rod 35 and the trapezoidal disk 29 to reduce the frictional resistance between the contact rod 35 and the trapezoidal disk 29.

[0083] Non-limiting, the drag-reducing component can be a ball 36 or a roller. In this embodiment, the drag-reducing component is preferably a ball 36, which is slidably embedded in one end of the contact rod 35 and slides in cooperation with the inclined surface on the trapezoidal disk 29.

[0084] While the first motor 17 drives the adjusting shaft 22 to rotate, it can also drive the trapezoidal disk 29 to rotate. Under the action of the contact between the inclined surface and the contact head, it can drive the second piston 28 to reciprocate along the air box 16, which can repeatedly squeeze the air in the air box 16 into the cylinder 9, causing the cylinder 9 to continuously extend and retract, thereby driving the moving frame 5 to reciprocate along the sampling box 3 and the sampling cylinder 4. Under the attraction between the magnets 12, it can drive the sampling cylinder 4 in the cleaning seat 11 to reciprocate. The cleaning seat 11 can clean the inner wall of the sampling cylinder 4 to prevent paint from adhering to the sampling cylinder 4 and solidifying, which would affect the subsequent sampling work.

[0085] Please see Figure 1 , Figure 2 , Figure 7 as well as Figure 8 In another preferred embodiment of this application, the positioning component includes:

[0086] Gear 18 is movably mounted on housing 1 and coaxially connected to shaft 19;

[0087] Gear ring 31, movably mounted on chassis 1 and connected to connecting box 32; and

[0088] Differential 30 is mounted on housing 1 and connects gear 18 and gear ring 31.

[0089] In this embodiment, the adjustment shaft 22 is movably connected to the clamping shaft 27, the rotating shaft 19, and the trapezoidal disk 29. A threaded rod 25 is movably arranged inside the housing 1. A second motor 26 is arranged on the housing 1. The output end of the second motor 26 is connected to the threaded rod 25. The threaded rod 25 passes through the mounting bracket 20 and the two are threadedly engaged.

[0090] It should be noted that the second motor 26 in this embodiment can be a stepper motor or a servo motor. In this embodiment, the second motor 26 is preferably a stepper motor. The stepper motor is mounted on the chassis 1 and its output end is connected to the threaded rod 25. As for the specific model parameters of the second motor 26, the best choice can be made according to the actual situation, and no specific limitation is made here.

[0091] During the rotation of the gear 18 driven by the rotating shaft 19, the gear ring 31 and the connecting box 32 can be slowly rotated under the action of the differential 30, so that the cavities 34 at different positions are connected to the bottom box 33 in turn. This allows water-based paint to be sampled and stored in the sample bottles 13 at different positions. When it is necessary to extract water-based paint from the paint tanks of different sizes, the second motor 26 can be powered on and rotated by the control box 2, which drives the threaded rod 25 to rotate. Under the threaded engagement between the threaded rod 25 and the mounting bracket 20, the mounting bracket 20, the adjusting shaft 22, the sampling box 3 and the sampling cylinder 4 can be moved in the vertical direction, thereby adjusting the height of the sampling cylinder 4 and completing the sampling work of paint tanks of different sizes.

[0092] Please see Figures 1-8 In another embodiment of this application, a water-based paint detection and sampling method includes the water-based paint detection and sampling device described in the above embodiments. The specific steps of the sampling method are as follows:

[0093] S100: By placing the paint can directly below the sampling tube 4, the sampling tube 4 is inserted into the paint can, and the control box 2 controls the first motor 17 to be powered on and rotated.

[0094] S200: When the No. 1 motor 17 rotates, it can drive the rotating shaft 19 to rotate. The rotation of the rotating shaft 19 drives the sampling execution module to work, thereby driving the pull rod 7 to reciprocate relative to the sampling box 3, drawing the water-based paint in the paint can into the sampling box 3 and finally inputting it into the storage bottle 13 along the No. 1 telescopic pipe 14, the bottom box 33 and the connecting box 32.

[0095] S300: While the rotating shaft 19 rotates, it can drive the adjustment component to work synchronously, drive the connecting box 32 to rotate, so that the cavities 34 at different positions on the connecting box 32 are connected to the bottom box 33 in sequence, thereby enabling the sampling work of multiple bottle storage.

[0096] How this application works:

[0097] The gas storage tank is placed directly below the sampling cylinder 4, and the sampling cylinder 4 is inserted into the gas storage tank. The control box 2 controls the first motor 17 to rotate, which drives the rotating shaft 19 to rotate. During the rotation of the rotating shaft 19, the adjusting shaft 22 rotates. Since the adjusting shaft 22 is U-shaped, it drives the rotating head 23 to reciprocate. Under the action of the drive arm 24 and the moving seat 8, the pull rod 7 and the first piston 10 reciprocate along the sampling box 3, thereby drawing the water-based paint from the gas storage tank into the sampling box 3. Finally, the paint flows along the first telescopic tube 14 and the bottom box 33 into the cavity 34, and finally into the sample storage bottle 13. While the machine 17 drives the adjusting shaft 22 to rotate, it can also drive the trapezoidal disk 29 to rotate. Under the action of the contact between the inclined surface and the contact head, it can drive the second piston 28 to reciprocate along the air box 16, repeatedly squeezing the air in the air box 16 into the cylinder 9, causing the cylinder 9 to continuously extend and retract, thereby driving the moving frame 5 to reciprocate along the sampling box 3 and the sampling cylinder 4. Under the attraction between the magnets 12, it can drive the sampling cylinder 4 in the cleaning seat 11 to reciprocate. The cleaning seat 11 can clean the inner wall of the sampling cylinder 4, preventing paint from adhering to the sampling cylinder 4 and solidifying, which would affect the subsequent sampling work. During the rotation of the gear 18 driven by the rotating shaft 19, the gear ring 31 and the connecting box 32 can be slowly rotated under the action of the differential 30, so that the cavities 34 at different positions are connected to the bottom box 33 in turn. This allows water-based paint to be sampled and stored in the sample bottles 13 at different positions. When it is necessary to extract water-based paint from the paint tanks of different sizes, the second motor 26 can be powered on and rotated by the control box 2, which drives the threaded rod 25 to rotate. Under the threaded engagement between the threaded rod 25 and the mounting bracket 20, the mounting bracket 20, the adjusting shaft 22, the sampling box 3 and the sampling cylinder 4 can be moved in the vertical direction, thereby adjusting the height of the sampling cylinder 4 and completing the sampling work of paint tanks of different sizes.

[0098] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0099] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water-based paint testing and sampling device, comprising a chassis, a control box, a sampling box, a sampling tube, and a connecting frame, wherein the control box is mounted on the chassis, the sampling box is movably mounted on the chassis via the connecting frame, the sampling tube is mounted on the sampling box, a piston is movably mounted inside the sampling box and elastically connected to it, and a pull rod connected to the piston is movably mounted on the sampling box, characterized in that... The sampling device also includes: A connecting box is movably mounted on the chassis and communicates with the sampling box. The connecting box has several cavities arranged around its interior. The bottom box is installed on the chassis and communicates with the cavity. The bottom box is connected to the sampling box through a telescopic pipe No.

1. A number of sample bottles are arranged in a ring around the connecting box, and the sample bottles and the cavity are in one-to-one correspondence and communication. The sampling drive system, located inside the chassis and connected to the pull rod, controls the movement of the pull rod and can drive the connecting box to rotate; wherein... The sampling drive system includes: The hinge is movably mounted inside the chassis. Motor No. 1 is mounted on the chassis and connected to the rotating shaft; The sampling execution module, housed within the chassis, connects the rotating shaft and the pull rod, and is used to adjust the position of the pull rod; and An adjustment component is installed on the chassis and connects the rotating shaft and the connecting box. When the rotating shaft moves, the adjustment component controls the rotation of the connecting box. The sampling execution module also includes a cleaning structure disposed between the adjusting shaft and the sampling cylinder, used to clean the inner wall of the sampling cylinder; the cleaning structure includes: The cleaning seat is movable inside the sampling cylinder; A movable frame is movably positioned between the sampling tube and the sampling box, and a connecting rod is provided on the movable frame; Magnets are provided on both the cleaning seat and the movable frame; A cylinder is movably mounted on the chassis via a mounting bracket, with its movable end connected to a connecting rod; and a transmission unit is disposed between the cylinder and the adjusting shaft, wherein the cylinder extends or retracts via the transmission unit when the adjusting shaft moves; the transmission unit includes an air box, a second piston, a trapezoidal disc, and a contact head. The air box is mounted on the machine casing and connected to the cylinder via the second telescopic tube. The trapezoidal disc is movably mounted inside the air box and connected to the adjusting shaft. The second piston is movably mounted inside the air box and the two are elastically connected. The contact head is located at the eccentric position of the second piston and slides in cooperation with the inclined surface formed on the trapezoidal disc.

2. The water-based paint detection and sampling device according to claim 1, characterized in that, The sampling execution module includes: The adjusting shaft is movably mounted inside the chassis and connected to the rotating shaft; A rotating head, which is movably sleeved on a connecting shaft; The movable seat is located at the end of the pull rod furthest from the first piston; and The drive arm is movably connected between the rotating head and the moving seat.

3. The water-based paint detection and sampling device according to claim 2, characterized in that, The adjusting shaft is U-shaped.

4. The water-based paint detection and sampling device according to claim 3, characterized in that, A friction-reducing component is provided between the contact rod and the inclined surface of the trapezoidal disk to reduce the frictional resistance between the contact rod and the trapezoidal disk.

5. The water-based paint detection and sampling device according to claim 1, characterized in that, The adjustment component includes: The gear is movably mounted on the chassis and coaxially connected to the rotating shaft; Gear ring 31, movably mounted on the chassis and connected to the connector box; and The differential is mounted on the chassis and connects the gear and the gear ring 31.

6. The water-based paint detection and sampling device according to claim 5, characterized in that, The adjustment shaft is movably connected by a retaining shaft, a rotating shaft, and a trapezoidal disc. A threaded rod is movably installed inside the housing. A second motor is installed on the housing. The output end of the second motor is connected to the threaded rod. The threaded rod passes through the mounting bracket and the two are threaded together.

7. A method for sampling and testing water-based paints, comprising the water-based paint sampling and testing device as described in claim 1, characterized in that, The specific steps of the sampling method are as follows: S100: By placing the paint can directly below the sampling tube, inserting the sampling tube into the paint can, and controlling the No. 1 motor to rotate via the control box; S200: When the No. 1 motor rotates, it can drive the rotating shaft to rotate. The rotation of the rotating shaft drives the sampling execution module to work, thereby driving the pull rod to reciprocate relative to the sampling box, drawing the water-based paint in the paint can into the sampling box and finally inputting it into the storage bottle through the No. 1 telescopic tube, the bottom box and the connecting box. S300: While the rotating shaft is rotating, it can drive the adjustment component to work synchronously, which in turn drives the connecting box to rotate, so that the cavities at different positions on the connecting box are connected to the bottom box in sequence, thereby enabling sampling work for multiple bottle storage.

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