A viscometer for detecting quality of a new chemical material product

Abstract

The application discloses a viscometer for quality detection of chemical new material products, and relates to the technical field of viscometers, which comprises a base, an ultrasonic cleaning tank is fixed on the base, a material moving mechanism for realizing automatic feeding and discharging of sample cylinders is also fixed on the base, a support is fixed on the rear side of the base, a first motor is fixed on the support, the output shaft of the first motor is connected with a threaded rod on the support, and the threaded rod is connected with a moving frame to make the moving frame move in the Z-axis direction. The viscometer for quality detection of chemical new material products realizes the 180° transposition of the detection mechanism and the automatic material moving of the sample cylinders driven by the turntable by 90° in a coordinated manner through the linkage control of the adjusting mechanism, the material moving mechanism and the detection mechanism, so that the pipeline operation can be realized, manual participation is not needed, the detection efficiency is greatly improved, and the batch detection of the chemical new material can be effectively adapted.

Description

Technical Field

[0001] This invention relates to the field of viscometer technology, specifically to a viscometer used for quality testing of new chemical materials. Background Technology

[0002] In the production and quality control of new chemical materials (such as polymer gels, epoxy resins, functional coatings, molten polymers, etc.), viscosity is a core indicator that characterizes the fluidity, processing performance and stability of materials. Its detection accuracy directly determines whether the product meets production standards and application requirements. Rotary viscometers have become the mainstream equipment for viscosity testing of new chemical materials because they can simulate the shear environment in the actual material processing process (such as the shear state during paint spraying and plastic injection molding).

[0003] In practical testing, existing rotary viscometers inevitably contain air bubbles in viscous samples. These air bubbles interfere with the measurement torque, resulting in significantly lower viscosity readings and drastic data fluctuations, which fail to effectively reflect the true properties of the sample. Summary of the Invention

[0004] The purpose of this invention is to provide a viscometer for quality testing of new chemical materials, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a viscometer for quality testing of new chemical materials, comprising a base, an ultrasonic cleaning box fixed on the base, a material transfer mechanism for automatically loading and unloading sample cylinders fixed on the base, a bracket fixed on the rear side of the base, a first motor fixed on the bracket, the output shaft of the first motor being connected to a threaded rod with a bearing connected to the bracket, and the threaded rod being connected to a movable frame to move the movable frame in the Z-axis direction, the movable frame being fixed to the main unit, and an adjustment mechanism and a detection mechanism being provided below the main unit;

[0006] The adjustment mechanism can both adjust the position of the two detection mechanisms and automatically lock their positions. The adjustment mechanism is fixed below the main unit.

[0007] The detection mechanism can both detect the viscosity of the sample inside the sample cylinder and perform negative pressure venting of the sample to avoid air bubbles affecting the accuracy of the detection. The detection mechanism is connected to the adjustment mechanism.

[0008] Preferably, the material transfer mechanism includes a limiting frame fixed to the base, and a feeding conveyor is fixed to the right side of the limiting frame, and a discharging conveyor is fixed to the left side of the limiting frame. The above structure can provide a basic guarantee for the automatic loading and unloading of sample tubes.

[0009] Preferably, the material transfer mechanism further includes a rotating shaft connected to the base by a bearing, and a first gear is fixed on the rotating shaft. The first gear is connected to a second gear via a toothed belt. At the same time, the second gear is fixed to a vertical rod connected to the base by a bearing. The vertical rod and the sliding rod are slidably connected. The number of teeth of the second gear is half the number of teeth of the first gear. With the above structure, the rotating shaft and the mounting plate can rotate synchronously, and the rotation angle of the rotating shaft is half the rotation angle of the mounting plate, thereby ensuring the normal operation of the device.

[0010] Preferably, a turntable is fixed to the upper end of the rotating shaft, and four positioning slots are equally spaced on the turntable. A pusher plate is slidably connected to the turntable, and the pusher plate and the positioning slots are distributed in a one-to-one correspondence. A crossbar is fixed to the pusher plate, and the crossbar is slidably connected to the turntable. A first spring is fixed between the pusher plate and the turntable. A round rod is also fixed to the pusher plate and slidably connected to the turntable. A permanent magnet is fixed on the round rod, and the permanent magnet and a permanent magnet plate fixed on the base form a magnetic attraction structure. The turntable rotates 90° each time. Through the above structure, the sample tube can be positioned to ensure the normal operation of the test, and the sample tube can be automatically ejected to facilitate the normal unloading of the sample tube.

[0011] Preferably, the movable frame and the support are slidably connected, and a first controller fixed on the support is provided above the movable frame. Through the above structure, the control function of the second motor can be realized.

[0012] Preferably, the adjustment mechanism includes a fixed frame fixed to the lower end face of the main unit, and a second motor is fixed on the fixed frame. A mounting plate is fixed on the output shaft of the second motor, and the mounting plate is fixedly connected to the slide rod. The mounting plate rotates 180° each time. A fixed rod is also fixed on the output shaft of the second motor, and a positioning sleeve is fixed to the end of the turntable. The positioning sleeve has a flared hole. The second motor is electrically connected to the first controller. Through the above structure, the position adjustment of the two detection mechanisms can be realized, thereby providing a basic guarantee for the cleaning of the detection mechanisms, and further providing a basic guarantee for the continuous detection of the device.

[0013] Preferably, a guide rod is slidably connected to the fixed frame, and a positioning shaft is fixed on the guide rod. The positioning shaft is nested with the flared hole on the positioning sleeve to achieve positioning. A second spring is fixed between the guide rod and the fixed frame. The guide rod is located directly below the positioning plate, and the positioning plate is symmetrically fixed on the bracket. Through the above structure, the locking effect of the rotating shaft can be achieved to ensure the stability of the device.

[0014] Preferably, the detection mechanism includes a pressure plate disposed below the mounting plate, and a sealing gasket is fixed on the lower end face of the pressure plate. The sealing gasket cooperates with the sample cylinder to achieve a seal. At the same time, a third motor is also fixed on the pressure plate. A detection head is fixed on the output end of the third motor, and the detection head is connected to the pressure plate by a bearing. With the above structure, sample detection can be realized while avoiding sample splashing, ensuring the normal operation of the detection.

[0015] Preferably, a third spring is fixed between the pressure plate and the mounting plate, and the pressure plate is symmetrically distributed about the center line of the mounting plate. The elastic action of the third spring can provide a basic force for the automatic reset of the pressure plate, thereby ensuring the normal operation of the device.

[0016] Preferably, a piston is fixed on the pressure plate, and the piston is slidably connected to the cylinder. Several air holes are opened at equal angles on the cylinder, and a gas guide tube that passes through the pressure plate and the sealing gasket is connected to the cylinder. A second sensor is fixed on the cylinder, and the second sensor is electrically connected to a third motor. Through the above structure, the negative pressure exhaust function of the sample in the sample cylinder can be realized, thereby effectively reducing the influence of air bubbles in the sample on the detection data and ensuring the accuracy of the detection data.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The viscometer used for quality testing of new chemical materials, through the linkage control of the adjustment mechanism, the transfer mechanism and the testing mechanism, coordinates the cleaning and switching of the testing mechanism with the loading and unloading of the sample tube, and simultaneously realizes the 180° repositioning of the testing mechanism and the automatic transfer of the sample tube by the turntable at 90°, thereby realizing assembly line operation without human intervention, greatly improving testing efficiency, and effectively adapting to the batch testing of new chemical materials;

[0019] 2. The viscometer used for quality testing of this new chemical material product, through the action of piston, cylinder and gas guide tube, can achieve sealing of the upper opening of the sample tube and negative pressure degassing in the early stage of testing. This can not only avoid sample splashing caused by the rotation of the detection head during the testing process, but also avoid the presence of air bubbles in the sample affecting the accuracy of the test data. Moreover, the negative pressure degassing and detection are integrated into one unit, eliminating the need for additional pretreatment equipment, thereby simplifying the processing flow and effectively improving the testing efficiency. Attached Figure Description

[0020] Figure 1 This is a frontal three-dimensional structural diagram of the device of the present invention;

[0021] Figure 2 This is a bottom-view three-dimensional structural diagram of the material transfer mechanism of the present invention;

[0022] Figure 3This is a frontal cross-sectional three-dimensional structural diagram of the turntable of the present invention;

[0023] Figure 4 This is a frontal three-dimensional structural diagram of the adjustment mechanism and the detection mechanism of the present invention;

[0024] Figure 5 This is a bottom-view three-dimensional structural diagram of the adjustment mechanism and detection mechanism of the present invention;

[0025] Figure 6 This is a bottom-view cross-sectional three-dimensional structural diagram of the positioning sleeve of the present invention;

[0026] Figure 7 This is a schematic diagram of the cylindrical cross-sectional three-dimensional structure of the present invention from a bottom view.

[0027] In the diagram: 1. Base; 2. Ultrasonic cleaning box; 3. Transfer mechanism; 301. Limiting frame; 302. Feeding conveyor; 303. Discharging conveyor; 304. Rotating shaft; 305. First gear; 306. Second gear; 307. Vertical rod; 308. Slide rod; 309. Turntable; 310. Positioning groove; 311. Push plate; 312. Horizontal rod; 313. First spring; 314. Round rod; 315. Permanent magnet; 316. Permanent magnet plate; 4. Sample cylinder; 5. Support; 6. First motor; 7. Threaded rod; 8. Moving frame; 801. First 10. Controller; 11. Main unit; 12. Adjustment mechanism; 13. Fixing frame; 14. Second motor; 15. Mounting plate; 16. Fixing rod; 17. Positioning sleeve; 18. Guide rod; 19. Positioning shaft; 1000. Second spring; 1001. Positioning plate; 102. Detection mechanism; 1101. Pressure plate; 1102. Sealing gasket; 1103. Third motor; 1104. Detection head; 1105. Third spring; 1106. Piston; 1107. Cylinder; 1108. Air hole; 1109. Second sensor. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-7The present invention provides a technical solution: a viscometer for quality testing of new chemical materials, including a base 1, an ultrasonic cleaning box 2 fixed on the base 1, a material transfer mechanism 3 for automatically loading and unloading sample cylinders 4 fixed on the base 1, a bracket 5 fixed on the rear side of the base 1, a first motor 6 fixed on the bracket 5, the output shaft of the first motor 6 is connected to a threaded rod 7 connected to the bearing on the bracket 5, and the threaded rod 7 is connected to a moving frame 8 to move the moving frame 8 in the Z-axis direction, the moving frame 8 is fixed to the main unit 9, and an adjustment mechanism 10 and a detection mechanism 11 are provided below the main unit 9;

[0030] The adjustment mechanism 10 can both adjust the position of the two detection mechanisms 11 and automatically lock the position of the two detection mechanisms 11. The adjustment mechanism 10 is fixed below the main unit 9.

[0031] The detection mechanism 11 can both detect the viscosity of the sample inside the sample cylinder 4 and perform negative pressure exhaust of the sample to avoid air bubbles affecting the accuracy of the detection. The detection mechanism 11 is connected to the adjustment mechanism 10.

[0032] The material transfer mechanism 3 includes a limiting frame 301 that is fixed to the base 1, and a feeding conveyor 302 is fixed to the right side of the limiting frame 301, and a discharging conveyor 303 is fixed to the left side of the limiting frame 301.

[0033] When using a viscometer for quality testing of new chemical materials, such as Figures 1-7 As shown, by placing the sample cylinder 4 containing the sample on the feeding conveyor 302, the feeding conveyor 302 transports the sample cylinder 4 from right to left, thereby enabling the leftmost sample cylinder 4 to cooperate with the right positioning groove 310 on the turntable 309, thus achieving the positioning of the sample cylinder 4.

[0034] The material transfer mechanism 3 also includes a rotating shaft 304 connected to the base 1 by a bearing, and a first gear 305 is fixed on the rotating shaft 304. The first gear 305 is connected to a second gear 306 via a toothed belt. The second gear 306 is fixed to a vertical rod 307 connected to the base 1 by a bearing. The vertical rod 307 is slidably connected to a sliding rod 308. The number of teeth on the second gear 306 is half the number of teeth on the first gear 305. The adjustment mechanism 10 includes a fixing frame 1001 fixed to the lower end face of the main unit 9, and a second motor 1002 is fixed on the fixing frame 1001. A mounting plate 1003 is fixed to the output shaft of the second motor 1002. The mounting plate 1003 is fixedly connected to the sliding rod 308. Each time 1003 rotates 180°, a fixing rod 1004 is fixed on the output shaft of the second motor 1002, and a positioning sleeve 1005 is fixed at the end of the turntable 309. The positioning sleeve 1005 has a flared hole. The second motor 1002 is electrically connected to the first controller 801. A guide rod 1006 is slidably connected to the fixed frame 1001, and a positioning shaft 1007 is fixed on the guide rod 1006. The positioning shaft 1007 and the flared hole on the positioning sleeve 1005 are nested to achieve positioning. A second spring 1008 is fixed between the guide rod 1006 and the fixed frame 1001. The guide rod 1006 is located directly below the positioning plate 1009, and the positioning plate 1009 is symmetrically fixed on the bracket 5.

[0035] At this time, because the positioning plate 1009 is in contact with the guide rod 1006, the positioning shaft 1007 is separated from the flared hole on the positioning sleeve 1005, and the second spring 1008 is in a contracted state. Then, by controlling the second motor 1002 to drive the mounting plate 1003 to rotate counterclockwise by 180°, the mounting plate 1003 rotates simultaneously, driving the slide rod 308, the vertical rod 307, and the second gear 306 to rotate counterclockwise by 180°. When the second gear 306 rotates, through the transmission action of the toothed belt, it can simultaneously drive the first gear 305, the rotating shaft 304, and the turntable 309 to rotate. When rotating counterclockwise, since the number of teeth of the second gear 306 is half the number of teeth of the first gear 305, when the second gear 306 rotates 180°, the first gear 305, the rotating shaft 304 and the turntable 309 rotate 90° counterclockwise, thereby driving the sample cylinder 4 in the positioning groove 310 to rotate 90°, realizing the automatic feeding of the sample cylinder 4. When the sample cylinder 4 rotates, the limiting frame 301 can help ensure the stability of the rotation of the sample cylinder 4. At this time, the sample cylinder 4 is located directly below the front detection mechanism 11 for detection. According to the above principle, the continuous feeding of the sample cylinder 4 can be realized.

[0036] The movable frame 8 and the support 5 are slidably connected, and a first controller 801 fixed on the support 5 is provided on the upper part of the movable frame 8;

[0037] After the sample cylinder 4 moves to directly below the front detection mechanism 11, the first motor 6 drives the threaded rod 7 to rotate, causing the moving frame 8 to move downwards. This, in turn, moves the main unit 9, the adjusting mechanism 10, and the detection mechanism 11 downwards. During the downward movement of the adjusting mechanism 10, when the positioning plate 1009 separates from the upper end of the guide rod 1006, the second spring 1008 causes the guide rod 1006 and the positioning shaft 1007 to move upwards relative to the fixed frame 1001. This allows the positioning shaft 1007 to be nested with the flared hole on the positioning sleeve 1005 for positioning, thereby locking the positions of the mounting plate 1003, the detection mechanism 11, and the turntable 309, ensuring the normal operation of subsequent detections. Furthermore, when the front detection mechanism 11 moves downwards to engage with the sample cylinder 4, the... The detection mechanism 11 can detect the viscosity of the sample in the sample cylinder 4. At this time, the rear detection mechanism 11 enters the ultrasonic cleaning box 2 for cleaning, which provides a basic guarantee for subsequent continuous detection. After the detection is completed, the first motor 6 drives the threaded rod 7 to rotate in the opposite direction, which can move the main unit 9, the adjustment mechanism 10 and the detection mechanism 11 to move up and reset. When the guide rod 1006 contacts the positioning plate 1009 and is subjected to force, the positioning shaft 1007 can be separated from the horn hole on the positioning sleeve 1005 to release the lock. After unlocking, when the moving frame 8 moves up to contact the first controller 801, the second motor 1002 can drive the mounting plate 1003 to rotate counterclockwise by 180°, realizing the position swap of the front and rear detection mechanisms 11, so as to clean the detection mechanism 11 in the future.

[0038] A turntable 309 is fixed to the upper end of the rotating shaft 304. Four positioning slots 310 are opened at equal angles on the turntable 309. A pusher plate 311 is slidably connected to the turntable 309. The pusher plate 311 and the positioning slots 310 are distributed in a one-to-one correspondence. A crossbar 312 is fixed on the pusher plate 311. The crossbar 312 is slidably connected to the turntable 309. A first spring 313 is fixed between the pusher plate 311 and the turntable 309. A round rod 314 is also fixed on the pusher plate 311 and is slidably connected to the turntable 309. A permanent magnet 315 is fixed on the round rod 314. The permanent magnet 315 and the permanent magnet plate 316 fixed on the base 1 form a magnetic attraction structure. The turntable 309 rotates 90° each time.

[0039] After one sample cylinder 4 is tested, when the second motor 1002 drives the mounting plate 1003 to rotate 180° counterclockwise, the turntable 309 can rotate 90° counterclockwise simultaneously to load the next sample cylinder 4. At this time, the first sample cylinder 4 being tested rotates to the far right, and the permanent magnet 315 at the corresponding position of the first sample cylinder 4 being tested rotates to cooperate with the permanent magnet plate 316. Through the magnetic attraction between the permanent magnet plate 316 and the permanent magnet 315, the pusher plate 311 is forced to move to the left. With the sliding action between the round rod 314 and the turntable 309, the stability of the pusher plate 311's movement can be ensured. Through the action of the pusher plate 311, the first sample cylinder 4 being tested can be pushed to contact the unloading conveyor 303. The unloading conveyor 303 can automatically unload the sample cylinder 4 being tested, thus providing a basic guarantee for the continuous testing of multiple sample cylinders 4.

[0040] The detection mechanism 11 includes a pressure plate 1101 disposed below the mounting plate 1003, and a sealing gasket 1102 is fixed to the lower end face of the pressure plate 1101. The sealing gasket 1102 cooperates with the sample cylinder 4 to achieve a seal. A third motor 1103 is also fixed to the pressure plate 1101. A detection head 1104 is fixed to the output end of the third motor 1103, and the detection head 1104 is connected to the pressure plate 1101 by a bearing. A third spring 1105 is fixed between the pressure plate 1101 and the mounting plate 1003. The center line of the mounting plate 1003 is symmetrically distributed front and back. A piston 1106 is fixed on the pressure plate 1101, and the piston 1106 is slidably connected to the cylinder 1107. Several air holes 1108 are opened at equal angles on the cylinder 1107. At the same time, an air guide pipe that penetrates the pressure plate 1101 and the sealing gasket 1102 is connected to the cylinder 1107. A second sensor 1109 is fixed on the cylinder 1107, and the second sensor 1109 is electrically connected to the third motor 1103.

[0041] When the moving frame 8 moves downward, causing the detection mechanism 11 to move downward and cooperate with the sample cylinder 4 for detection, such as Figures 1-7As shown, during the downward movement of the detection mechanism 11, when the sealing gasket 1102 contacts the upper opening of the sample cylinder 4, the upper opening of the sample cylinder 4 can be sealed. At this time, the detection head 1104 contacts the sample inside the sample cylinder 4. As the moving frame 8 continues to move downward, the pressure plate 1101 moves relative to the mounting plate 1003. At this time, the piston 1106 slides upward inside the cylinder 1107, thereby creating a negative pressure inside the cylinder 1107. With the help of the air guide tube, a negative pressure can be created inside the sample cylinder 4. Through the negative pressure, air bubbles in the sample inside the sample cylinder 4 can be discharged, thereby effectively reducing the impact of air bubbles in the sample inside the sample cylinder 4 on the accuracy of the detection data. Until the pressure plate 1101 moves to contact the second sensor 1109, the second sensor 1109 controls the third motor 1103 to start and drive the detection head 1104 to rotate, thereby realizing the detection of the viscosity of the sample inside the sample cylinder 4.

[0042] In summary, this application, through the adjustment mechanism 10, can not only adjust the positions of the two detection mechanisms 11 to facilitate the cleaning of the detection mechanisms 11 and provide a basic guarantee for continuous sample detection, but also simultaneously realize the control function of the turntable 309, thereby achieving automatic loading and unloading of the sample cylinder 4 and ensuring the normal operation of the device. In addition, with the negative pressure exhaust function in the detection mechanism 11, air bubbles in the sample can be removed before sample detection, avoiding the presence of air bubbles affecting the accuracy of the detection data.

[0043] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A viscometer for quality testing of new chemical materials, comprising a base (1), characterized in that: An ultrasonic cleaning box (2) is fixed on the base (1). A material transfer mechanism (3) for automatically loading and unloading sample cylinders (4) is also fixed on the base (1). A bracket (5) is fixed on the rear side of the base (1). A first motor (6) is fixed on the bracket (5). The output shaft of the first motor (6) is connected to a threaded rod (7) with a bearing connected to the bracket (5). The threaded rod (7) is connected to a moving frame (8) to make the moving frame (8) move in the Z-axis direction. The moving frame (8) is fixed to the main unit (9). An adjustment mechanism (10) and a detection mechanism (11) are provided below the main unit (9). The adjustment mechanism (10) can both adjust the position of the two detection mechanisms (11) and automatically lock the position of the two detection mechanisms (11). The adjustment mechanism (10) is fixed below the host (9). The detection mechanism (11) can both detect the viscosity of the sample in the sample cylinder (4) and exhaust the sample under negative pressure to avoid air bubbles affecting the accuracy of the detection. The detection mechanism (11) is connected to the adjustment mechanism (10). The detection mechanism (11) includes a pressure plate (1101) disposed below the mounting plate (1003), and a sealing gasket (1102) is fixed on the lower end face of the pressure plate (1101). The sealing gasket (1102) cooperates with the sample cylinder (4) to achieve a seal. At the same time, a third motor (1103) is also fixed on the pressure plate (1101). A detection head (1104) is fixed on the output end of the third motor (1103), and the detection head (1104) is connected to the pressure plate (1101) by a bearing. A third spring (1105) is fixed between the pressure plate (1101) and the mounting plate (1003). The pressure plate (1101) is symmetrically distributed about the center line of the mounting plate (1003); a piston (1106) is fixed on the pressure plate (1101), and the piston (1106) is slidably connected to the cylinder (1107). Several air holes (1108) are opened at equal angles on the cylinder (1107). At the same time, an air guide pipe is connected to the cylinder (1107) through the pressure plate (1101) and the sealing gasket (1102). A second sensor (1109) is fixed on the cylinder (1107), and the second sensor (1109) is electrically connected to the third motor (1103).

2. The viscometer for quality testing of new chemical materials according to claim 1, characterized in that: The material transfer mechanism (3) includes a limiting frame (301) fixed to the base (1), and a feeding conveyor (302) is fixed on the right side of the limiting frame (301), and a discharging conveyor (303) is fixed on the left side of the limiting frame (301).

3. The viscometer for quality testing of new chemical materials according to claim 2, characterized in that: The material transfer mechanism (3) also includes a rotating shaft (304) connected to the base (1) by a bearing, and a first gear (305) is fixed on the rotating shaft (304). The first gear (305) is connected to the second gear (306) by a toothed belt. At the same time, the second gear (306) is fixed to the vertical rod (307) connected to the base (1) by a bearing. The vertical rod (307) and the slide rod (308) are slidably connected. The number of teeth of the second gear (306) is half the number of teeth of the first gear (305).

4. The viscometer for quality testing of new chemical materials according to claim 3, characterized in that: The upper end of the rotating shaft (304) is fixed with a turntable (309), and four positioning slots (310) are opened at equal angles on the turntable (309). A pusher plate (311) is slidably connected to the turntable (309). The pusher plate (311) and the positioning slots (310) are distributed in a one-to-one correspondence. A crossbar (312) is fixed on the pusher plate (311), and the crossbar (312) is slidably connected to the turntable (309). A first spring (313) is fixed between the pusher plate (311) and the turntable (309). A round rod (314) is also fixed on the pusher plate (311) and is slidably connected to the turntable (309). A permanent magnet (315) is fixed on the round rod (314), and the permanent magnet (315) and the permanent magnet plate (316) fixed on the base (1) form a magnetic attraction structure. The turntable (309) rotates 90° each time.

5. A viscometer for quality testing of new chemical materials according to claim 4, characterized in that: The movable frame (8) is slidably connected to the support (5), and a first controller (801) fixed on the support (5) is provided above the movable frame (8).

6. The viscometer for quality testing of new chemical materials according to claim 5, characterized in that: The adjustment mechanism (10) includes a fixed frame (1001) fixed on the lower end face of the host (9), and a second motor (1002) is fixed on the fixed frame (1001). A mounting plate (1003) is fixed on the output shaft of the second motor (1002). The mounting plate (1003) is fixedly connected to the slide rod (308). The mounting plate (1003) rotates 180° each time. A fixed rod (1004) is also fixed on the output shaft of the second motor (1002). A positioning sleeve (1005) is fixed at the end of the turntable (309). A horn hole is opened on the positioning sleeve (1005). The second motor (1002) is electrically connected to the first controller (801).

7. A viscometer for quality testing of new chemical materials according to claim 6, characterized in that: A guide rod (1006) is slidably connected to the fixed frame (1001), and a positioning shaft (1007) is fixed on the guide rod (1006). The positioning shaft (1007) is nested with the horn hole on the positioning sleeve (1005) to achieve positioning. A second spring (1008) is fixed between the guide rod (1006) and the fixed frame (1001). The guide rod (1006) is located directly below the positioning plate (1009), and the positioning plate (1009) is symmetrically fixed on the bracket (5).

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