A rotational viscometer

Abstract

The present application relates to the technical fields of viscosity measurement, in particular to a rotary viscosity measuring instrument, comprising a base, a plurality of support columns are fixedly connected to the top of the base, a connecting seat is fixedly connected to the top end of the support column, a lifting seat is vertically slidably arranged on the connecting seat, a mixing barrel is fixedly arranged in the connecting seat, a groove corresponding to the mixing barrel is formed in the top of the connecting seat, a top cover is fixedly arranged on the lifting seat, a rotor is rotatably arranged below the top cover, a detection motor for driving the rotor to rotate is fixedly connected to the top of the top cover, four clamping plates for clamping and fixing the mixing barrel are arranged on the connecting seat, and the rotary viscosity measuring instrument further comprises a clamping mechanism, a lifting mechanism and a dismounting mechanism. Through the cooperative arrangement of the clamping structure and other components, compared with the measuring instrument in the prior art, the four-direction clamping plates are driven to move synchronously under the power transmission, the stress deviation is avoided, the clamping balance is improved, and the four-direction stable clamping of the mixing barrel and the stable guarantee of the measurement process are further realized.

Description

Technical Field

[0001] This invention relates to the field of viscosity measurement technology, and more particularly to a rotational viscosity meter. Background Technology

[0002] Liquid viscosity is a measure of the internal friction force when a liquid flows. It is used to characterize the fluid’s ability to resist deformation and is also called dynamic viscosity. Simply relying on static observation does not meet the needs of practical applications. In order to accurately obtain dynamic viscosity data, rotational measurement is required to meet the accuracy requirements of industrial production and scientific research experiments.

[0003] Existing technology, such as the rotational viscosity meter disclosed in publication number CN213875345U, includes a base, a vertically mounted column fixed on the base, a height-adjustable detection motor slidably connected to the column, an output shaft of the detection motor connected to a rotor perpendicular to the base, a mounting seat fixed on the base, a placement groove formed on the side wall of the mounting seat, the side wall of the placement groove being open and the groove opening located below the rotor, a container for holding the liquid to be tested being placed in the placement groove, and a clamping device on the base for pressing the container firmly into the placement groove. This enhances the stability of the container when the rotor rotates within it.

[0004] However, this technical solution has the following problems in practical use:

[0005] The threaded push rod is threaded into a locking threaded hole. One end of the lever has an arc-shaped protrusion that abuts against the push rod that slides out of the sliding hole, while the other end has an arc-shaped clamping semi-ring. The inner wall of the semi-ring is fitted against the outer wall of the container, pressing the container tightly against the placement groove to keep the container stable during rotor stirring. However, because the threaded push rod is operated manually and does not form a self-locking fit, the vibration generated by stirring can cause slight displacement of the push rod, resulting in a decrease in the clamping force of the arc-shaped clamping semi-ring. This can cause slight displacement of the container, affecting the accuracy of viscosity measurement and ultimately limiting the improvement of the device's reliability. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that in the prior art, the threaded push rod is operated by manual screwing and does not form a self-locking fit. The vibration generated by stirring will cause the push rod to make a slight displacement, resulting in the weakening of the clamping force of the arc-shaped clamping half ring. The container is prone to slight displacement, which in turn affects the viscosity measurement accuracy and ultimately restricts the improvement of the reliability of the device. Therefore, a rotational viscometer is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A rotational viscosity meter includes a base, a plurality of support columns fixedly connected to the top of the base, a connecting seat fixedly connected to the top of the support columns, a lifting seat vertically slidably disposed on the connecting seat, a mixing tank fixedly disposed inside the connecting seat, a groove corresponding to the mixing tank being formed on the top of the connecting seat, a top cover fixedly disposed on the lifting seat, a rotor rotatably disposed below the top cover, a detection motor for driving the rotor to rotate fixedly connected to the top of the top cover, and four clamping plates for clamping and fixing the mixing tank disposed on the connecting seat; the meter also includes;

[0009] A clamping mechanism is used to synchronously move and fix the four clamping plates to hold the mixing barrel.

[0010] A lifting mechanism, the lifting structure being used to drive the lifting seat to move vertically;

[0011] The disassembly and assembly mechanism facilitates the disassembly and assembly of the top cover by the operator.

[0012] Preferably, the clamping mechanism includes:

[0013] A servo motor is fixedly connected to the top of the base.

[0014] Four sliding joints are formed on the connecting seat;

[0015] A fixing plate is fixedly sleeved on the output end of the servo motor.

[0016] Synchronization seat, which is located on one side of the connector seat.

[0017] Preferably, the clamping mechanism further includes:

[0018] The blocks, in pairs, are respectively fixedly connected to the fixing plate and the synchronization seat;

[0019] The rotating rod is fixedly connected to the block.

[0020] A traction rod, which is rotatably sleeved on the rotating rod;

[0021] A crossbar is embedded in and horizontally slidably connected within the sliding opening, and the crossbar is fixedly connected to the synchronization seat.

[0022] Preferably, the clamping mechanism further includes a fixing member for fixing the clamping plate onto the crossbar.

[0023] Preferably, the fastener includes:

[0024] Mounting bracket, the mounting bracket is fixedly connected to the top of the crossbar;

[0025] Side plate, the side plate is fixedly connected to the opposite side wall of the clamping plate near the crossbar;

[0026] A rectangular rod is embedded in and vertically slidably connected to the mounting base, and the rectangular rod and the horizontal bar are vertically slidably inserted into each other;

[0027] A handle is fixedly attached to the top of the rectangular rod.

[0028] Preferably, the fastener further includes:

[0029] A spring is sleeved on the rectangular rod, and both ends of the spring are fixedly connected to the mounting base and the rectangular rod, respectively.

[0030] A horizontal plate is fixedly connected to the side plate. The horizontal plate and the horizontal bar are horizontally slidably inserted together, and the rectangular bar and the horizontal plate are vertically slidably inserted together.

[0031] A through-hole is provided on the horizontal plate, and the through-hole and the rectangular rod are correspondingly arranged;

[0032] Side grooves are formed on the crossbar, and the side grooves and the crossbar are correspondingly arranged.

[0033] Preferably, the lifting mechanism includes:

[0034] A lifting cylinder is fixedly connected to the top of the base, and the output end of the lifting cylinder is fixedly connected to the lifting seat.

[0035] A pair of slide rods are fixedly connected to the top of the base, and the lifting seat is vertically slidably sleeved on the slide rods.

[0036] Preferably, the disassembly and assembly mechanism includes:

[0037] A connecting block is fixedly connected to the top cover.

[0038] The chuck is fixedly connected to the lifting seat;

[0039] The L-shaped plate is vertically slidably inserted into the claw, and the L-shaped plate and the connecting block are fixedly connected.

[0040] Vertical lugs, a pair of vertical lugs are fixedly connected to the top surface of the lifting seat;

[0041] The worm gear is rotatably connected to the two vertical lugs;

[0042] A rotating wheel is fixedly connected to the end of the worm gear.

[0043] Preferably, the disassembly and assembly mechanism further includes:

[0044] A lead screw is rotatably connected to the top of the lifting seat;

[0045] A worm gear is fixedly sleeved on the lead screw, and the worm gear meshes with the worm.

[0046] The limiting rod is fixedly connected to the top of the lifting seat;

[0047] A transmission plate is threadedly connected to the lead screw, and the transmission plate is vertically slidably sleeved on the limiting rod.

[0048] The insertion rod is fixedly connected to the bottom of the transmission plate, and the insertion rod and the L-shaped plate are vertically slidably inserted into each other.

[0049] Preferably, a sealing cap is fixedly connected to the bottom surface of the top cover, and an annular groove is provided on the top of the mixing tank, with the annular groove and the sealing cap being correspondingly arranged.

[0050] Compared with the prior art, the beneficial effects of this invention are as follows:

[0051] 1. This invention utilizes the cooperation of a servo motor and a traction rod, a synchronous seat and a crossbar transmission connection, and a clamping plate and a crossbar fixation. Under power transmission, the clamping plates in four directions move synchronously closer together, avoiding force deviation and improving clamping balance, thereby further achieving stable four-way clamping of the mixing barrel and ensuring stability during the measurement process.

[0052] 2. This invention uses a rectangular rod and a spring to fix the horizontal plate and the clamping plate, and the plug-in disassembly and assembly enables quick replacement of the clamping plate, adapting to mixing barrels of different outer diameters and ensuring a tight fit, thereby further improving the device's adaptability to containers of different specifications and enhancing clamping reliability.

[0053] 3. This invention utilizes the cooperation of a worm gear and a worm wheel, a screw threaded to a transmission plate, and an insertion rod inserted into an L-shaped plate. The rotation operation enables the top cover to be quickly disassembled, facilitating rotor maintenance and cleaning, reducing operational difficulty, and thus further improving the ease of maintenance and durability of the device. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the overall structure of a rotational viscosity meter proposed in this invention;

[0055] Figure 2 This is a schematic diagram of a lifting cylinder in a rotary viscometer proposed in this invention;

[0056] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0057] Figure 4 This is a schematic diagram showing the separation of the support column from the base in a rotational viscosity meter proposed in this invention;

[0058] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0059] Figure 6 This is a cross-sectional view of the crossbar in a rotational viscosity meter proposed in this invention.

[0060] In the picture:

[0061] 1. Base; 2. Support column;

[0062] 3. Connecting seat; 31. Groove; 32. Slide rod; 33. Lifting cylinder;

[0063] 4. Adjustable seat;

[0064] 5. Mixing tank; 51. Circular groove;

[0065] 6. Top cover; 61. Sealing cover; 62. Connecting block; 63. Claw; 64. L-shaped plate; 641. Vertical lug; 642. Worm gear; 643. Rotary wheel; 644. Lead screw; 645. Worm wheel; 646. Transmission plate; 647. Insert rod; 648. Limiting rod;

[0066] 7. Rotor;

[0067] 8. Clamping plate; 81. Servo motor; 82. Slide opening; 83. Fixing plate; 84. Block; 85. Rotating rod; 86. Traction rod; 87. Synchronizing seat; 88. Crossbar; 881. Mounting base; 882. Side plate; 883. Rectangular rod; 884. Handle; 885. Spring; 886. Horizontal plate; 887. Through port; 888. Side groove;

[0068] 9. Inspect the motor. Detailed Implementation

[0069] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0070] Reference Figures 1-6A rotational viscometer includes a base 1. Several support columns 2 are fixedly connected to the top of the base 1, providing stable support for a connecting seat 3 and ensuring balanced stress on the overall structure. A connecting seat 3 is fixedly connected to the top of each support column 2, supporting a mixing tank 5 and forming the core mounting carrier. A lifting seat 4 is vertically slidable on the connecting seat 3, allowing it to move up and down to adjust the distance between the top cover 6 and the mixing tank 5. The mixing tank 5 is fixedly installed inside the connecting seat 3, holding the liquid to be measured, and is initially positioned by a groove 31. A groove 31 corresponding to the mixing tank 5 is formed on the top of the connecting seat 3, fitting the bottom of the mixing tank 5. A top cover 6 is fixedly mounted on the lifting seat 4, supporting a rotor 7 and a detection motor 9, achieving sealing and driving functions. The rotor 7 is rotatably mounted below the top cover 6, extending into the liquid inside the mixing tank 5, and providing viscosity data feedback through rotation. A detection motor 9 is fixedly connected to the top of the top cover 6 to drive the rotor 7, providing a stable rotation speed and driving the rotor 7 to rotate continuously. The connecting seat 3 is provided with four clamping plates 8 for clamping and fixing the mixing barrel 5, which apply clamping force to the mixing barrel 5 from four directions to prevent shaking during measurement.

[0071] It also includes a clamping mechanism, a lifting mechanism, and a disassembly mechanism, which respectively realize the functions of clamping the mixing tank 5, moving the lifting seat 4, and disassembling the top cover 6.

[0072] The clamping mechanism includes a servo motor 81, sliding joints 82, a fixed plate 83, a synchronous seat 87, blocks 84, a rotating rod 85, a traction rod 86, a crossbar 88, and fixing components. The servo motor 81 is fixedly connected to the top of the base 1, providing power for the clamping action and outputting torque to drive the fixed plate 83 to rotate. Four sliding joints 82 are formed on the connecting seat 3, providing horizontal sliding channels for the crossbar 88 to ensure precise movement. The fixed plate 83 is fixedly sleeved on the output end of the servo motor 81, transmitting the power of the servo motor 81 to the blocks 84, causing the rotating rod 85 to swing. The synchronous seat 87 is located on one side of the connecting seat 3, synchronously linking the four crossbars 88 to ensure consistent movement of the clamping plate 8. Pairs of blocks 84 are fixedly connected to the fixed plate 83 and the synchronous seat 87 respectively, serving as the mounting carrier for the rotating rod 85, realizing power transmission and steering. The rotating rod 85 is fixedly connected to the blocks 84, connecting the fixed plate 83 and the synchronous seat 87, converting rotation into linear power. The traction rod 86 is rotatably sleeved on the rotating rod 85, buffering the impact of power transmission and ensuring the smooth movement of the synchronous seat 87. The crossbar 88 is embedded and horizontally slidably connected in the sliding opening 82, and the crossbar 88 and the synchronous seat 87 are fixedly connected, driving the clamping plate 8 to move closer to or away from the mixing tank 5, realizing clamping and releasing.

[0073] The fastener is used to fix the clamping plate 8 onto the crossbar 88, and includes a mounting base 881, a side plate 882, a rectangular rod 883, a handle 884, a spring 885, a crossbar 886, a through-hole 887, and a side groove 888. The mounting base 881 is fixedly connected to the top of the crossbar 88, providing installation and sliding space for the rectangular rod 883 and bearing the fixing function. The side plate 882 is fixedly connected to the opposite side wall of the clamping plate 8 near the crossbar 88, connecting the clamping plate 8 and the crossbar 886, enhancing the stability of the installation structure. The rectangular rod 883 is embedded in and vertically slidably connected to the mounting base 881, and the rectangular rod 883 and the crossbar 88 are vertically slidably inserted, locking the crossbar 886 through the through-hole 887, achieving quick fixing of the clamping plate 8. The handle 884 is fixedly connected to the top of the rectangular rod 883, facilitating the operator to lift the rectangular rod 883 and quickly disassemble the clamping plate 8. Spring 885 is sleeved on rectangular rod 883, and both ends of spring 885 are fixedly connected to mounting base 881 and rectangular rod 883 respectively, providing continuous preload to ensure stable insertion of rectangular rod 883 into through port 887. Horizontal plate 886 is fixedly connected to side plate 882. Horizontal plate 886 and horizontal rod 88 are horizontally slidably inserted, and rectangular rod 883 and horizontal plate 886 are vertically slidably inserted, inserted into side groove 888 for positioning, and cooperate with rectangular rod 883 to achieve installation of clamping plate 8. Through port 887 is opened on horizontal plate 886, corresponding to rectangular rod 883, and adapted to form a locking structure to prevent horizontal plate 886 from loosening. Side groove 888 is opened on horizontal rod 88, corresponding to horizontal plate 886, accommodating insertion of horizontal plate 886, and restricting horizontal and vertical displacement of horizontal plate 886.

[0074] The lifting mechanism includes a lifting cylinder 33 and a sliding rod 32. The lifting cylinder 33 is fixedly connected to the top of the base 1, and the output end of the lifting cylinder 33 is fixedly connected to the lifting seat 4, providing vertical driving force to the lifting seat 4 to achieve precise lifting of the top cover 6. A pair of sliding rods 32 are fixedly connected to the top of the base 1, and the lifting seat 4 is vertically slidably sleeved on the sliding rods 32, limiting the movement trajectory of the lifting seat 4 and preventing deviation and tilting during the lifting process.

[0075] The assembly / disassembly mechanism includes a connecting block 62, a claw 63, an L-shaped plate 64, vertical lugs 641, a worm gear 642, a rotating wheel 643, a lead screw 644, a worm wheel 645, a limiting rod 648, a transmission plate 646, and an insert rod 647. The connecting block 62 is fixedly connected to the top cover 6, connecting the top cover 6 and the L-shaped plate 64, transmitting fixing force to ensure the top cover 6 is securely installed. The claw 63 is fixedly connected to the lifting seat 4, clamping the L-shaped plate 64 and providing initial positioning and support for the top cover 6. The L-shaped plate 64 slides vertically into the claw 63, and the L-shaped plate 64 and the connecting block 62 are fixedly connected, serving as a connection intermediary between the top cover 6 and the lifting seat 4, facilitating quick docking. A pair of vertical lugs 641 are fixedly connected to the top surface of the lifting seat 4, supporting the rotation of the worm gear 642 and ensuring precise meshing between the worm gear 642 and the worm wheel 645. The worm gear 642 is rotatably connected to two vertical lugs 641, transmitting power to the rotating wheel 643, which drives the worm wheel 645 to rotate the lead screw 644. The rotating wheel 643 is fixedly connected to the end of the worm gear 642, facilitating manual rotation by the operator and reducing the difficulty of disassembling and assembling the top cover 6. The lead screw 644 is rotatably connected to the top of the lifting seat 4, converting rotation into vertical displacement, driving the transmission plate 646 to move up and down. The worm wheel 645 is fixedly sleeved on the lead screw 644, and the worm wheel 645 meshes with the worm gear 642, changing the direction of power transmission and realizing the linkage between the worm gear 642 and the lead screw 644. The limiting rod 648 is fixedly connected to the top of the lifting seat 4, limiting the rotation of the transmission plate 646 and ensuring its smooth vertical movement. The transmission plate 646 is threadedly connected to the lead screw 644, and the transmission plate 646 slides vertically on the limiting rod 648, driving the insertion rod 647 to insert into or disengage from the L-shaped plate 64, realizing the locking and unlocking of the top cover 6. The insertion rod 647 is fixedly connected to the bottom of the transmission plate 646, and the insertion rod 647 and the L-shaped plate 64 are vertically slidably inserted into each other, forming a locking structure with the L-shaped plate 64, which enhances the installation stability of the top cover 6.

[0076] A sealing cap 61 is fixedly connected to the bottom surface of the top cover 6. An annular groove 51 is provided on the top of the mixing tank 5, and the annular groove 51 and the sealing cap 61 are correspondingly set. When the top cover 6 is closed, it is embedded in the annular groove 51 to prevent liquid leakage and maintain internal sealing.

[0077] The functional principle of this invention can be explained through the following operational methods:

[0078] In use, first place the mixing tank 5 in the groove 31 of the connecting seat 3. Start the servo motor 81 to drive the fixing plate 83 to rotate. The block 84 on the fixing plate 83 pulls the traction rod 86 through the rotating rod 85, driving the synchronous seat 87 to drive the four crossbars 88 to slide synchronously along the four sliding ports 82. The crossbar 886 is inserted into the side groove 888 of the crossbar 88. Under the pre-tightening force of the spring 885, the rectangular rod 883 is inserted into the through port 887, fixing the clamping plate 8. The four clamping plates 8 synchronously clamp the outer wall of the mixing tank 5 to achieve stable positioning. (To remove the clamping plate 8, manually pull the handle 884 upwards to disengage the rectangular rod 883 relative to the crossbar 886 to remove the clamping plate 8.)

[0079] Next, the lifting cylinder 33 is activated, driving the lifting seat 4 to move smoothly vertically along the two slide rods 32. The top cover 6 descends synchronously with the lifting seat 4, and the sealing cover 61 is precisely embedded in the annular groove 51 of the mixing tank 5 to form a tight seal. The detection motor 9 is activated, and its output shaft drives the rotor 7 to rotate in the mixing tank 5 at a set speed. The liquid viscosity data is obtained by calculating the load change of the detection motor 9.

[0080] Finally, when it is necessary to disassemble or assemble the top cover 6, the rotating wheel 643 drives the worm gear 642 to rotate on the two vertical lugs 641. The worm gear 642 engages with the worm wheel 645 to drive the lead screw 644 to rotate. The transmission plate 646 moves vertically upward along the limiting rod 648. The insertion rod 647 disengages from the reserved hole of the L-shaped plate 64, and the connecting block 62 and the claw 63 can be separated to remove the top cover 6. This realizes the functions of stable clamping of the mixing tank 5, accurate viscosity measurement, and convenient disassembly and maintenance of the top cover 6.

[0081] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotational viscosity meter, comprising a base (1), characterized in that, The base (1) is fixedly connected to a number of support columns (2) at the top. The support columns (2) are fixedly connected to a connecting seat (3) at the top. A lifting seat (4) is vertically slidably arranged on the connecting seat (3). A mixing tank (5) is fixedly arranged inside the connecting seat (3). A groove (31) corresponding to the mixing tank (5) is opened on the top of the connecting seat (3). A top cover (6) is fixedly arranged on the lifting seat (4). A rotor (7) is rotatably arranged below the top cover (6). A detection motor (9) for driving the rotor (7) to rotate is fixedly connected to the top of the top cover (6). Four clamping plates (8) for clamping and fixing the mixing tank (5) are arranged on the connecting seat (3). A clamping mechanism is used to synchronously move and fix the four clamping plates (8) to clamp the mixing barrel (5); The lifting mechanism is used to drive the lifting seat (4) to move vertically; The disassembly and assembly mechanism facilitates the disassembly and assembly of the top cover (6) by the operator.

2. The rotational viscosity meter according to claim 1, characterized in that, The clamping mechanism includes: Servo motor (81) is fixedly connected to the top of the base (1); Slide joint (82), four slide joints (82) are formed on the connecting seat (3); A fixing plate (83) is fixedly sleeved on the output end of the servo motor (81); Synchronization seat (87) is located on one side of the connecting seat (3).

3. A rotational viscosity meter according to claim 2, characterized in that, The clamping mechanism further includes: Block (84), a pair of blocks (84) are respectively fixedly connected to the fixing plate (83) and the synchronization seat (87); Rotating rod (85) is fixedly connected to the block (84); The traction rod (86) is rotatably sleeved on the rotating rod (85); A crossbar (88) is embedded in and horizontally slidably connected within the sliding opening (82), and the crossbar (88) and the synchronizing seat (87) are fixedly connected.

4. A rotational viscosity meter according to claim 3, characterized in that, The clamping mechanism further includes a fixing member for fixing the clamping plate (8) onto the crossbar (88).

5. A rotational viscosity meter according to claim 4, characterized in that, The fastener includes: Mounting base (881), mounting base (881) is fixedly connected to the top of the crossbar (88); Side plate (882), side plate (882) is fixedly connected to the opposite side wall of the clamping plate (8) near the cross bar (88); A rectangular rod (883) is embedded in and vertically slidably connected to the mounting base (881), and the rectangular rod (883) and the crossbar (88) are vertically slidably inserted into each other; The handle (884) is fixedly connected to the top of the rectangular rod (883).

6. A rotational viscosity meter according to claim 5, characterized in that, The fastener also includes: Spring (885) is sleeved on the rectangular rod (883), and both ends of spring (885) are fixedly connected to the mounting base (881) and the rectangular rod (883) respectively; A horizontal plate (886) is fixedly connected to the side plate (882). The horizontal plate (886) and the horizontal bar (88) are horizontally slidably inserted together, and the rectangular bar (883) and the horizontal plate (886) are vertically slidably inserted together. A through-hole (887) is formed on the horizontal plate (886), and the through-hole (887) and the rectangular rod (883) are correspondingly provided; Side groove (888) is formed on the crossbar (88), and the side groove (888) and the cross plate (886) are correspondingly arranged.

7. A rotational viscosity meter according to claim 1, characterized in that, The lifting mechanism includes: Lifting cylinder (33) is fixedly connected to the top of the base (1), and the output end of the lifting cylinder (33) is fixedly connected to the lifting seat (4); The sliding rod (32) is fixedly connected to the top of the base (1), and the lifting seat (4) is vertically slidably sleeved on the sliding rod (32).

8. A rotational viscometer according to claim 1, characterized in that, The disassembly / assembly mechanism includes: Connecting block (62), the connecting block (62) is fixedly connected to the top cover (6); The chuck (63) is fixedly connected to the lifting seat (4); L-shaped plate (64), which is vertically slidably inserted into the claw (63), and L-shaped plate (64) and connecting block (62) are fixedly connected; Vertical lugs (641), a pair of vertical lugs (641) are fixedly connected to the top surface of the lifting seat (4); The worm (642) is rotatably connected to the two vertical lugs (641); Rotary wheel (643) is fixedly connected to the end of the worm (642).

9. A rotational viscosity meter according to claim 8, characterized in that, The disassembly / assembly mechanism also includes: The lead screw (644) is rotatably connected to the top of the lifting seat (4); A worm gear (645) is fixedly sleeved on the lead screw (644), and the worm gear (645) meshes with the worm (642); Limiting rod (648), the limiting rod (648) is fixedly connected to the top of the lifting seat (4); Transmission plate (646) is threadedly connected to the lead screw (644) and vertically slidably sleeved on the limiting rod (648); Insert rod (647) is fixedly connected to the bottom of the transmission plate (646), and the insert rod (647) and the L-shaped plate (64) are vertically slidably inserted into each other.

10. A rotational viscometer according to claim 1, characterized in that, The bottom surface of the top cover (6) is fixedly connected to a sealing cover (61), and the top of the mixing tank (5) is provided with an annular groove (51), and the annular groove (51) and the sealing cover (61) are correspondingly arranged.

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