An on-line measuring device for the viscosity of precision casting coatings

Abstract

The present invention discloses an on-line viscosity measuring device for precision casting coatings, which comprises a bracket. A measuring device is arranged in the middle of the bracket. The measuring device includes a support suspension connected to the bracket. An elevating cylinder is fixedly arranged at the upper end of the bracket. The lower end of the elevating cylinder is fixed to the support suspension, and a liquid receiving device is connected below the elevating cylinder. A rotating slurry dipping bucket is arranged on the side of the bracket and below the liquid receiving device. The liquid receiving device includes a liquid receiving funnel. The liquid receiving funnel includes a conical part at the lower part of the liquid receiving funnel. A liquid inlet is arranged on the side wall of the conical part, and a liquid outlet is arranged below the conical part. The liquid receiving device further includes a liquid receiving funnel cover plate connected to the elevating cylinder. The liquid receiving funnel cover plate is threadedly connected to the liquid receiving funnel. The present invention uses instrument data analysis, with small viscosity measurement errors and convenient external communication of viscosity data.

Description

Technical Field

[0001] The present invention relates to an on-line measuring device, in particular to an on-line measuring device for the viscosity of precision casting coatings. Background Art

[0002] Precision casting is one of the important casting processes in modern industry. It has the advantages of wide adaptability, high dimensional accuracy of castings, small machining allowance, low cost, etc., and is favored by the majority of foundries. However, precision casting has higher technical requirements than other processes, especially some data in each process link are particularly important. The viscosity of the slurry when the precision casting wax pattern is dipped in the slurry is one of the data. Whether the viscosity of the mortar is reasonable directly affects the quality of the shell making and indirectly affects the quality of the casting. In the prior art, when enterprises produce, they mostly use the original method of dripping with a wine ladle and visually judging the liquid flow time by hand to determine the viscosity state of the liquid. This operation method based entirely on experience has a large viscosity measurement error, and it is easy to lack control of the viscosity during the operation, which has a great impact on the production quality control. Coupled with the lack of strong data support, it is difficult to trace back in case of quality problems later; most of the existing viscometer products on the market are suitable for laboratory use, not suitable for industrial production environments, and the viscosity data is not convenient for external communication. Summary of the Invention

[0003] The purpose of the present invention is to provide an on-line measuring device for the viscosity of precision casting coatings. The present invention uses instrument data analysis, with small viscosity measurement error, simple structure and convenient use.

[0004] The technical solution of the present invention: An on-line measuring device for the viscosity of precision casting coatings, which includes a bracket. A measuring device is provided in the middle of the bracket. The measuring device includes a support suspension connected to the bracket; a lifting cylinder is fixedly provided at the upper end of the bracket. The lower end of the lifting cylinder is fixed to the support suspension, and a liquid receiving device is connected below the lifting cylinder; a rotating dipping bucket is connected to the lower end of the bracket. The liquid receiving device includes a liquid receiving funnel. The liquid receiving funnel includes a conical part located at the lower part of the liquid receiving funnel. A liquid inlet is provided on the side wall of the conical part, and a liquid outlet is provided below the conical part. The liquid receiving device further includes a liquid receiving funnel cover plate connected to the lifting cylinder. The liquid receiving funnel cover plate is threadedly connected to the liquid receiving funnel.

[0005] In the above-mentioned on-line measuring device for the viscosity of precision casting coatings, an electric cabinet connected to the measuring device by a channel wire is provided at the front end of the bracket. The electric cabinet contains an Ethernet interface, and a wireless module is provided on the Ethernet interface.

[0006] In the above-mentioned on-line viscosity measuring device for precision casting coating, the lifting cylinder includes a push rod located at the lower part. A flange is provided at the end of the push rod. A top plate is provided above the flange. The upper end face of the top plate contacts the lower end face of the liquid receiving funnel cover plate. Threaded holes are provided on the flange. Through holes are provided at the corresponding positions of the top plate and the liquid receiving funnel cover plate. Bolts are provided on the threaded holes. The nuts of the bolts contact the upper end face of the liquid receiving funnel cover plate. A compression spring is sleeved outside the bolt. The upper end of the compression spring contacts the lower end face of the top plate, and the lower end of the compression spring contacts the upper end face of the flange. A connecting rod is connected to the center of the lower end face of the flange. A rubber stopper that fits the liquid outlet is provided at the other end of the connecting rod.

[0007] In the above-mentioned on-line viscosity measuring device for precision casting coating, a ring-shaped gravity sensor is also sleeved at the lower end of the push rod. The ring-shaped gravity sensor is placed above the flange. A nut concentric with the ring-shaped gravity sensor is installed above the ring-shaped gravity sensor. A fixing hole is provided on the end face of the nut. A pull ring is installed on the liquid receiving funnel cover plate. The pull ring and the fixing hole are connected by a pull rope.

[0008] In the above-mentioned on-line viscosity measuring device for precision casting coating, cutting areas are symmetrically arranged on the upper end face of the liquid receiving funnel cover plate. The top plate at the cutting areas is exposed on the outside. A top rod corresponding to the cutting areas is provided below the support suspension.

[0009] In the above-mentioned on-line viscosity measuring device for precision casting coating, a connecting bracket is provided at the right end of the support suspension. An infrared distance measuring instrument is provided on the connecting bracket. A pull rope encoder is provided at the front end of the support suspension.

[0010] In the above-mentioned on-line viscosity measuring device for precision casting coating, the rotating slurry dipping bucket includes a slurry dipping outer bucket connected to the bracket. The bottom of the slurry dipping outer bucket is sleeved with a slurry dipping inner barrel through a bearing. External gears are provided on the outer wall of the slurry dipping inner barrel. A rotating drive motor is also installed at the bottom of the bracket. A gear meshing with the external gear is provided on the output shaft of the rotating drive motor. A stirring paddle is also connected to the slurry dipping outer bucket. The stirring paddle extends into the bottom of the slurry dipping inner barrel.

[0011] In the above-mentioned on-line viscosity measuring device for precision casting coating, the electric cabinet is also connected to the lifting cylinder and the rotating drive motor in sequence through wires.

[0012] In the aforementioned online measuring device for the viscosity of precision casting coatings, the method of using the online measuring device for the viscosity of precision casting coatings is as follows: turn on the power supply, power the electrical cabinet to power the measuring device and the lifting cylinder, the push rod moves downward, driving the liquid holding device to extend into the slurry inner cylinder, at this time the rubber plug blocks the liquid outlet, the infrared rangefinder and the pull rope encoder detect that the liquid holding device reaches the specified position and stops moving, the liquid enters the liquid holding funnel from the liquid inlet, the annular gravity sensor determines that the weight of the liquid in the liquid holding funnel is stable, the push rod moves upward until the push rod supports the top plate, so that the top plate no longer continues to move upward, the flange, rubber plug and other parts continue to move upward under the action of the lifting cylinder, the rubber plug is separated from the liquid outlet, and the liquid flows out from the liquid outlet, the annular gravity sensor obtains the liquid viscosity by processing and conversion according to the reduction in gravity of the liquid holding device within a certain period of time.

[0013] In the aforementioned online measurement device for the viscosity of precision casting coatings, the stirring paddle on the outer barrel of the slurry remains fixed, and the inner barrel of the slurry rotates through the meshing transmission of the outer gear and the gear of the rotating drive motor. The stirring paddle rotates and stirs the liquid in the inner barrel of the slurry to ensure that the concentration of the liquid in the inner barrel of the slurry is uniform; after the liquid is evenly stirred, if the measured viscosity is not within a reasonable range, an alarm will be triggered to prompt manual adjustment of the viscosity.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention includes a bracket, and a measuring device is provided on the bracket. Compared with judging the liquid viscosity state by manually visually observing the liquid flow time using the wine grape drip method, the measuring device of the present invention includes a liquid holding device connected to a lifting cylinder, and the liquid holding device first collects liquid data and then feeds back the data for analysis, and the error of the measured viscosity is small; the measuring device includes a liquid holding funnel and a liquid holding funnel cover plate, and the conical part of the liquid holding funnel has a liquid inlet and a liquid outlet for loading and unloading the measured liquid, and the structure is simple and easy to use. In addition, the present invention has the following advantages:

[0016] 1. The electric cabinet configured in the present invention includes an Ethernet interface connected to a wireless module. Through the wireless module, data can be directly uploaded to the intelligent control center, which is convenient for external communication of viscosity data and production management. If product problems occur in the future, the cause can be traced.

[0017] 2. In the process of lifting the liquid holding device of the present invention, the rubber stopper presses against the liquid outlet of the liquid holding funnel under the action of the compression spring, and the liquid cannot flow out. When it approaches the upper limit position, the push rod presses against the top plate to prevent it from moving upward. The liquid holding funnel is placed on the top plate and therefore no longer moves upward. The flange, rubber stopper and other parts continue to move upward under the action of the cylinder, and then the liquid holding funnel opens automatically. The mechanical structure is used to cleverly realize the collection and release of the measured liquid.

[0018] 3. By configuring a liquid level measurement and a wire rope encoder, the present invention ensures that when dealing with different liquid levels, the liquid can flow into from the square inlet beside the liquid receiving funnel each time during extraction, while the annular gravity sensor does not immerse in the measured liquid, thus ensuring the service life of the annular gravity sensor.

[0019] 4. The setting of the rotating slurry dipping barrel in the present invention can ensure that the liquid concentration in the slurry dipping inner barrel is uniform during a single measurement, thereby ensuring that the measured viscosity is more accurate. When the measured viscosity is not within a reasonable range, an alarm will be triggered to prompt manual adjustment of the viscosity, ensuring that the precision of the precision casting coating is within a reasonable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the liquid receiving device of the present invention;

[0022] Figure 3 is a sectional view of the liquid receiving device of the present invention;

[0023] Figure 4 is a schematic structural diagram of the detection device of the present invention;

[0024] Figure 5 is a schematic structural diagram of the rotating slurry dipping barrel.

[0025] The reference signs in the drawings are: 1 - support, 2 - measuring device, 3 - support suspension, 4 - lifting cylinder, 5 - liquid receiving device, 6 - electric cabinet, 7 - rotating slurry dipping barrel, 201 - annular gravity sensor, 202 - nut, 203 - fixing hole, 204 - wire rope, 205 - connecting bracket, 206 - infrared distance meter, 207 - wire rope encoder, 401 - push rod, 402 - flange, 403 - top plate, 404 - threaded hole, 405 - through hole, 406 - bolt, 407 - compression spring, 408 - connecting rod, 409 - rubber plug, 501 - liquid receiving funnel, 502 - conical part, 503 - liquid inlet, 504 - liquid outlet, 505 - liquid receiving funnel cover plate, 506 - pull ring, 507 - cut area, 508 - ejector rod, 701 - slurry dipping outer barrel, 702 - slurry dipping inner barrel, 703 - external gear, 704 - rotating drive motor, 705 - gear, 706 - stirring paddle. SPECIFIC EMBODIMENTS

[0026] An on-line viscosity measuring device for precision casting coatings, the structure of which is shown in Figures 1-5. It includes a bracket 1, and a measuring device 2 is arranged in the middle of the bracket 1. The measuring device 2 includes a support suspension 3 connected to the bracket; a lifting cylinder 4 is fixedly arranged at the upper end of the bracket 1, the lower end of the lifting cylinder 4 is fixed to the support suspension 3, and a liquid receiving device 5 is connected below the lifting cylinder 4; a rotating slurry dipping bucket 7 is connected to the lower end of the bracket 1. As Figure 2-4 shown, the liquid receiving device 5 includes a liquid receiving funnel 501. The liquid receiving funnel 501 includes a conical part 502 located at the lower part of the liquid receiving funnel 501. A liquid inlet 503 is arranged on the side wall of the conical part 502, and a liquid outlet 504 is arranged below the conical part 502. The liquid receiving device 5 further includes a liquid receiving funnel cover plate 505 connected to the lifting cylinder 4, and the liquid receiving funnel cover plate 505 is threadedly connected to the liquid receiving funnel 501. An electric cabinet 6 connected to the measuring device 2 through an electric wire is arranged at the front end of the bracket 1. The electric cabinet 6 contains an Ethernet interface, and a wireless module is arranged on the Ethernet interface. The lifting cylinder 4 includes a push rod 401 located at the lower part. A flange 402 is arranged at the end of the push rod 401. A top plate 403 is arranged above the flange 402. The upper end surface of the top plate 403 contacts the lower end surface of the liquid receiving funnel cover plate 505; a threaded hole 404 is arranged on the flange 402, through holes 405 are arranged at the corresponding positions of the top plate 403 and the liquid receiving funnel cover plate 505, a bolt 406 is arranged on the threaded hole 404, and the nut of the bolt 406 contacts the upper end surface of the liquid receiving funnel cover plate 505; a compression spring 407 is sleeved outside the bolt 406. The upper end of the compression spring 407 contacts the lower end surface of the top plate 403, and the lower end of the compression spring 407 contacts the upper end surface of the flange 402; a connecting rod 408 is connected to the center of the lower end surface of the flange 402, and a rubber stopper 409 that fits the liquid outlet 504 is arranged at the other end of the connecting rod 408. A ring-shaped gravity sensor 201 is further sleeved at the lower end of the push rod 401, and the ring-shaped gravity sensor 201 is placed above the flange 402; a nut 202 concentric with the ring-shaped gravity sensor 201 is installed above the ring-shaped gravity sensor 201, and a fixing hole 203 is arranged on the end surface of the nut 202; a pull ring 506 is installed on the liquid receiving funnel cover plate 505, and the pull ring 506 is connected to the fixing hole 203 through a pull rope 204. Symmetrically arranged cutting areas 507 are arranged on the upper end surface of the liquid receiving funnel cover plate 505, and the top plate 403 at the cutting areas 507 is exposed on the outside. A top rod 508 corresponding to the cutting areas 507 is arranged below the support suspension 3. A connecting bracket 205 is arranged at the right end of the support suspension 3, and an infrared distance measuring instrument 206 is arranged on the connecting bracket 205; a pull rope encoder 207 is arranged at the front end of the support suspension 3. As Figure 5As shown, the rotary slurry barrel 7 comprises a slurry outer barrel 701 connected to the bracket 1, a slurry inner barrel 702 is provided at the bottom of the slurry outer barrel 701 through a bearing connection sleeve, an outer gear 703 is provided on the outer wall of the slurry inner barrel 702, a rotary drive motor 704 is also installed at the bottom of the bracket 1, and a gear 705 meshing with the outer gear 703 is provided on the output shaft of the rotary drive motor 704; a stirring paddle 706 is also connected to the slurry outer barrel 701, and the stirring paddle 706 extends into the bottom of the slurry inner barrel 702. The electric cabinet 6 is also connected to the lifting cylinder 4 and the rotary drive motor 704 in sequence through wires.

[0027] In the aforementioned online measuring device for the viscosity of precision casting coating, the method of using the online measuring device for the viscosity of precision casting coating is as follows: turn on the power supply, the electrical cabinet box 6 is energized to supply power to the measuring device 2 and the lifting cylinder 4, the push rod 401 moves downward, driving the liquid receiving device 5 to extend into the slurry inner cylinder 702, at this time, the rubber plug 409 blocks the liquid outlet 504, the infrared rangefinder 206 and the pull rope encoder 207 detect that the liquid receiving device 5 reaches the specified position, stops moving, and the liquid enters the liquid receiving funnel 501 from the liquid inlet 503, and the surrounding After the annular gravity sensor 201 determines that the weight of the liquid in the liquid holding funnel 501 is stable, the push rod 401 moves upward until the push rod 508 pushes against the top plate 403, so that the top plate 403 no longer moves upward. The flange 402, rubber plug 409 and other parts continue to move upward under the action of the lifting cylinder 4, and the rubber plug 409 is separated from the liquid outlet 504. The liquid flows out from the liquid outlet 504. The annular gravity sensor 201 obtains the liquid viscosity by processing and conversion according to the gravity reduction of the liquid holding device 5 within a certain period of time. The stirring paddle 706 on the slurry outer barrel 701 remains fixed, and the slurry inner barrel 702 rotates through the outer gear 703 and the gear 705 of the rotating drive motor 704. The stirring paddle 706 rotates and stirs the liquid in the slurry inner barrel 702 to ensure that the concentration of the liquid in the slurry inner barrel 702 is uniform; after the liquid is stirred evenly, if the measured viscosity is not within a reasonable range, an alarm will be triggered to prompt manual adjustment of the viscosity.

[0028] Working principle:

[0029] The present invention includes a bracket, on which a measuring device and an electric cabinet connected to the measuring device are provided. Compared with judging the liquid viscosity state by manually visually observing the liquid flow-out time using a wine grape dripping method, the measuring device of the present invention first collects liquid data and then feeds back the data for analysis. The error of the measured viscosity is small, and the electric cabinet contains an Ethernet interface connected to a wireless module. Through the wireless module, the data can be directly uploaded to the intelligent control center, which is convenient for external communication of viscosity data and production management. If product problems occur later, the cause can be traced. In addition, during the lifting process of the liquid holding device of the present invention, the rubber stopper supports the liquid outlet of the liquid holding funnel under the action of a compression spring, and the liquid cannot flow out. When approaching the upper limit, the push rod supports the top plate so that it no longer moves upward. The liquid holding funnel is placed on the top plate and therefore no longer moves upward. The flange, rubber stopper and other parts continue to move upward under the action of the cylinder, and then the liquid holding funnel automatically opens. The mechanical structure is used to cleverly realize the collection and release of the measured liquid. The present invention is configured with a liquid level measurement and a pull-wire encoder to ensure that the liquid can flow in from the square inlet next to the liquid holding funnel each time it is extracted, and the annular gravity sensor is not immersed in the measured liquid, thereby ensuring the life of the annular gravity sensor. The setting of the rotating slurry barrel of the present invention can ensure that the liquid concentration in the slurry inner cylinder is uniform during a single measurement, thereby ensuring that the measured viscosity is more accurate. When the measured viscosity is not within a reasonable range, it will also trigger an alarm to prompt manual adjustment of the viscosity to ensure that the accuracy of the precision casting coating is within a reasonable range.

[0030] After the electrical cabinet is connected to the power supply, power is supplied to the measuring device, the lifting cylinder and the rotating slurry dipping barrel. The slurry inner barrel of the rotating slurry dipping barrel starts to rotate, and at the same time, the push rod moves downward, driving the liquid holding device to extend into the slurry dipping inner barrel. At this time, the rubber stopper blocks the liquid outlet. After the infrared rangefinder and the pull-wire encoder detect that the liquid holding device has reached the specified position, it stops moving, and the liquid enters the liquid holding funnel from the liquid inlet. After the annular gravity sensor determines that the weight of the liquid in the liquid holding funnel is stable, the push rod moves upward until the push rod supports the top plate, so that the top plate no longer moves upward. The flange, rubber stopper and other parts continue to move upward under the action of the lifting cylinder. The rubber stopper is separated from the liquid outlet, and the liquid flows out from the liquid outlet. The annular gravity sensor obtains the liquid viscosity by processing and conversion based on the reduction in gravity of the liquid holding device within a certain period of time.

Claims

1. An on-line measuring device for the viscosity of precision casting coating, characterized in that: It includes a bracket (1), a measuring device (2) is provided in the middle of the bracket (1), and the measuring device (2) includes a support suspension (3) connected to the bracket; a lifting cylinder (4) is fixedly provided at the upper end of the bracket (1), the lower end of the lifting cylinder (4) is fixed to the support suspension (3), and a liquid receiving device (5) is connected below the lifting cylinder (4); a rotating slurry dipping bucket (7) is provided on the side of the bracket (1) below the liquid receiving device (5); the liquid receiving device (5) includes a liquid receiving funnel (501), the liquid receiving funnel (501) includes a conical part (502) at the lower part of the liquid receiving funnel (501), a liquid inlet (503) is provided on the side wall of the conical part (502), a liquid outlet (504) is provided below the conical part (502), the liquid receiving device (5) further includes a liquid receiving funnel cover plate (505) connected to the lifting cylinder (4), and the liquid receiving funnel cover plate (505) is threadedly connected to the liquid receiving funnel (501); The lifting cylinder (4) includes a push rod (401) at the lower part, a flange (402) is provided at the end of the push rod (401), a top plate (403) is provided above the flange (402), and the upper end surface of the top plate (403) is in contact with the lower end surface of the liquid receiving funnel cover plate (505); a threaded hole (404) is provided on the flange (402), through holes (405) are provided at the corresponding positions of the top plate (403) and the liquid receiving funnel cover plate (505), a bolt (406) is provided on the threaded hole (404), and the nut of the bolt (406) is in contact with the upper end surface of the liquid receiving funnel cover plate (505); a compression spring (407) is sleeved outside the bolt (406), the upper end of the compression spring (407) is in contact with the lower end surface of the top plate (403), and the lower end of the compression spring (407) is in contact with the upper end surface of the flange (402); a connecting rod (408) is connected to the center of the lower end surface of the flange (402), and a rubber stopper (409) that fits the liquid outlet (504) is provided at the other end of the connecting rod (408).

2. The on-line viscosity measuring device for precision casting coating according to claim 1, characterized in that: An electric cabinet (6) connected to the measuring device (2) through an electric wire is provided at the front end of the bracket (1), and the electric cabinet (6) contains an Ethernet interface, and a wireless module is provided on the Ethernet interface.

3. The on-line viscosity measuring device for precision casting coating according to claim 1, characterized in that: A ring-shaped gravity sensor (201) is further sleeved at the lower end of the push rod (401), and the ring-shaped gravity sensor (201) is placed above the flange (402); a nut (202) concentric with the ring-shaped gravity sensor (201) is installed above the ring-shaped gravity sensor (201), and a fixing hole (203) is provided on the end surface of the nut (202); a pull ring (506) is installed on the liquid receiving funnel cover plate (505), and the pull ring (506) is connected to the fixing hole (203) through a pull rope (204).

4. The on-line viscosity measuring device for precision casting coating according to claim 1, characterized in that: Symmetrically arranged cutting areas (507) are provided on the upper end surface of the liquid receiving funnel cover plate (505), and the top plate (403) at the cutting areas (507) is exposed outside, and a top rod (508) corresponding to the cutting areas (507) is provided below the support suspension (3).

5. The online viscosity measuring device for precision casting coating according to claim 1 is characterized in that: a connecting bracket (205) is provided at the right end of the supporting suspension (3), and an infrared rangefinder (206) is provided on the connecting bracket (205); and a pull rope encoder (207) is provided at the front end of the supporting suspension (3).

6. The on-line viscosity measuring device for precision casting coating according to claim 2, characterized in that: The rotating slurry barrel (7) comprises a slurry outer barrel (701) connected to a support (1); a slurry inner barrel (702) is provided at the bottom of the slurry outer barrel (701) via a bearing connection sleeve; an outer gear (703) is provided on the outer wall of the slurry inner barrel (702); a rotating drive motor (704) is also installed at the bottom of the support (1); a gear (705) meshing with the outer gear (703) is provided on the output shaft of the rotating drive motor (704); and a stirring paddle (706) is also connected to the slurry outer barrel (701); the stirring paddle (706) extends into the bottom of the slurry inner barrel (702).

7. The on-line viscosity measuring device for precision casting coating according to claim 6, wherein: The electrical cabinet box (6) is also connected to the lifting cylinder (4) and the rotary drive motor (704) in sequence through wires.

8. The on-line viscosity measuring device for precision casting coating according to any one of claims 1-7, characterized in that The method of using the precision casting coating viscosity online measuring device is as follows: the power supply is turned on, the electrical cabinet (6) is energized to supply power to the measuring device (2) and the lifting cylinder (4), the push rod (401) moves downward, driving the liquid receiving device (5) to extend into the slurry dipping inner cylinder (702), at which time the rubber plug (409) blocks the liquid outlet (504) under the action of the compression spring (407), the infrared rangefinder (206) and the pull rope encoder (207) detect that the liquid receiving device (5) reaches the specified position, stops moving, and the liquid enters the liquid receiving funnel (501) from the liquid inlet (503), and the annular gravity After the sensor (201) determines that the weight of the liquid in the liquid holding funnel (501) is stable, the push rod (401) moves upward until the push rod (508) presses against the top plate (403), so that the top plate (403) no longer moves upward. The flange (402) and the rubber plug (409) continue to move upward under the action of the lifting cylinder (4), and the rubber plug (409) separates from the liquid outlet (504), and the liquid flows out from the liquid outlet (504). The annular gravity sensor (201) obtains the viscosity of the liquid by processing and converting the amount of gravity reduction of the liquid holding device (5) within a certain period of time.

9. The on-line viscosity measuring device for precision casting coating according to claim 8, characterized in that, The stirring paddle (706) on the slurry outer barrel (701) remains stationary, and the slurry inner barrel (702) rotates through the meshing transmission of the outer gear (703) and the gear (705) of the rotary drive motor (704). The stirring paddle (706) rotates and stirs the liquid in the slurry inner barrel (702) to ensure that the concentration of the liquid in the slurry inner barrel (702) is uniform. After the liquid is uniformly stirred, if the measured viscosity is not within a reasonable range, an alarm will be triggered to prompt manual adjustment of the viscosity.

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