CN218297927U - Pressure type liquid viscometer - Google Patents
Pressure type liquid viscometer Download PDFInfo
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- CN218297927U CN218297927U CN202221417212.6U CN202221417212U CN218297927U CN 218297927 U CN218297927 U CN 218297927U CN 202221417212 U CN202221417212 U CN 202221417212U CN 218297927 U CN218297927 U CN 218297927U
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Abstract
The utility model relates to a liquid viscosity measurement field, concretely relates to pressure type liquid viscometer of test liquid viscosity. A pressure type liquid viscometer comprises a transmission device; the pressure generating device is connected with the transmission device, and the liquid to be detected is driven by the transmission device to flow at a constant speed in the pressure generating device; the pressure measuring device comprises a pressure sensor, the pressure sensor is connected with the pressure generating device, and the pressure generated by the constant-speed flow of the liquid to be measured in the pressure generating device is measured through a probe in the pressure sensor. The viscosity of the substance is calculated by accurately measuring the pressure required by the flowing of the liquid to be measured according to the corresponding relation between the pressure and the viscosity of the liquid, so that the accuracy of the liquid viscosity test is improved. The range of the pressure generating device for containing the liquid to be tested is 0.1ml-10ml, and the requirement of viscosity test on trace expensive reagents in multiple fields can be met.
Description
Technical Field
The utility model relates to a liquid viscosity measurement field, concretely relates to pressure type liquid viscometer of test liquid viscosity.
Background
Viscosity is a very important physicochemical property of a liquid, and refers to the resistance of the liquid to flow, and the dynamic viscosity of a liquid is usually defaulted to the viscosity of a liquid. The traditional viscometer for measuring the viscosity of liquid comprises a plurality of viscometers such as a flow cup viscometer, a capillary viscometer, a rotary viscometer, a falling ball viscometer and the like. Flow cup viscometers typically consist of a cup with a hole through which the fluid flows, and the viscosity of the liquid is determined by timing the time required for the liquid in the cup to empty. Capillary viscometers include an austenitic viscometer and an ubbelohde viscometer, and generally comprise a U-shaped glass tube, two bulbs of which are respectively provided with a bulb at two sides, the two bulbs are connected through a capillary tube, liquid is transferred from the higher bulb to the lower bulb, and the viscosity is measured by calculating the time taken for the fluid to flow through the capillary tube. The rotational viscometer is used for measuring the viscosity of a fluid by immersing a rotating shaft of a rotational tester into the fluid to be measured and calculating the resistance of the rotating shaft when the rotating shaft rotates. Falling ball viscometers determine the viscosity of a liquid by allowing a solid ball to fall through the liquid.
The conventional viscometers have various condition limitations and defects in the practical application process, such as the problem of measurement accuracy when the conventional viscometers measure viscosity and the problem of the usage amount of a to-be-measured product. The traditional viscometer needs a large amount of liquid to be measured during testing, and the required amount of the liquid to be measured is different from dozens of milliliters to hundreds of milliliters. For expensive liquid reagents, which are used in amounts of only a few hundred microliters, it is not feasible to test the viscosity of the liquid using a conventional viscometer. With the development of science and technology, some new viscometers are also developed, for example, patent No. CN102393349B discloses a rotary capillary viscometer, which can realize the circular measurement of the viscosity of a solution system by embedding a capillary viscometer in a pressure-bearing container and combining rotary liquid lifting with pressure-bearing of the pressure-bearing container, so as to achieve higher measurement precision, but the technology does not solve the problem that a large amount of liquid to be measured is required for measuring the viscosity of the liquid.
For the fields of biology, pharmacy, chemistry and the like, when the demand for expensive liquid reagents is small, the viscosity of a small amount of liquid cannot be accurately measured by using the conventional viscometer, and further cognition of the physical properties of the liquid by research and development personnel is hindered, so that a viscometer capable of accurately measuring the viscosity of the small amount of liquid is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a pressure type liquid viscometer, include
A transmission device;
the pressure generating device is connected with the transmission device and is driven by the transmission device to enable the liquid to be detected to flow in the pressure generating device;
the pressure measuring device comprises a pressure sensor, the pressure sensor is connected with the pressure generating device, and the pressure generated by the flowing of the liquid to be measured in the pressure generating device is measured through a probe in the pressure sensor.
Preferably, the pressure type liquid viscometer further comprises a display device, wherein the display device comprises a display, and the display device is electrically connected with the pressure sensor and displays the measured value of the pressure sensor.
Preferably, the pressure generating device comprises a liquid suction pipe for holding the liquid to be measured;
the outer side of one end of the hollow push-pull rod is connected with a piston, the piston is in sliding connection with the inside of the liquid suction pipe, the other end of the hollow push-pull rod extends out of the liquid suction pipe, and a probe in the pressure sensor extends into one end, far away from the piston, of the hollow push-pull rod and extends to the end of the piston;
the bottom cover is detachably connected with the liquid suction pipe.
Preferably, the range of the liquid suction tube can be 0.1ml-10ml.
Further preferably, the range of the liquid suction tube can be selected from 0.1ml, 0.5ml, 1ml, 2ml, 3ml, 4ml, 5ml, 6ml, 7ml, 8ml, 9ml and 10ml.
Preferably, the pressure measuring device further comprises a sensing connector, and the pressure sensor is detachably connected with the hollow push-pull rod through the sensing connector.
Preferably, the transmission is a linear transmission.
Preferably, the linear actuator is selected from at least one of a screw actuator, a synchronous belt actuator, a push rod actuator and a cylinder actuator.
Preferably, the linear transmission device is a screw rod transmission device, and the screw rod transmission device comprises a sliding screw rod;
the motor is used for driving the sliding screw rod to rotate;
the screw rod sliding seat is arranged on the sliding screw rod and is respectively connected with the hollow push-pull rod and the pressure measuring device;
and the sliding guide rail is connected with the screw rod sliding seat in a sliding manner.
Preferably, the pressure type liquid viscometer also comprises a safety frame, and the safety frame is arranged on the periphery of the transmission device.
Preferably, the pressure type liquid viscometer also comprises a base, and the transmission device, the pressure generating device, the pressure measuring device and the display device are integrally installed on the base.
Preferably, pressure type liquid viscometer still include the mount, the mount is installed on the base, and the one end of mount and the top joint of liquid suction tube, the bottom joint of the other end and liquid suction tube.
The utility model discloses among the technical scheme, the inventor passes through transmission drive cavity push-and-pull rod upward movement, and cavity push-and-pull rod cooperatees with the piston and realizes that liquid suction tube absorbs liquid waiting to be surveyed, seals liquid suction tube bottom with the bottom after waiting to survey liquid absorption. And then the hollow push-pull rod is driven by the transmission device to downwards extrude the liquid to be measured, because the bottom of the liquid suction pipe is sealed, the piston acts on the extrusion force of the liquid to be measured, the liquid to be measured can generate a reaction force which is equal to the extrusion force in magnitude and opposite in direction to enable the liquid to be measured to rise through the hollow channel of the hollow push-pull rod, the probe of the pressure sensor in the hollow push-pull rod accurately measures the resistance of the liquid to be measured to rise, and the pressure applied by the piston to push the liquid to be measured to move is known. The viscosity of a substance is calculated by accurately measuring the relationship between the viscosity of a known substance and the pressure applied during movement, and drawing a data curve, so that the pressure required by movement of a small amount of a substance with unknown viscosity is tested.
Has the advantages that:
(1) The utility model discloses in take place to flow required pressure through the accurate measurement liquid that awaits measuring, pressure and the corresponding relation between the liquid viscosity when according to the motion of known material calculate the viscosity of material, improved the accuracy of liquid viscosity test.
(2) The liquid suction pipe of the utility model has the measuring range of 0.1ml-10ml, can meet the requirements of viscosity test of micro-quantity expensive reagents in the fields of biology, pharmacy, chemistry and the like.
(3) The utility model discloses in the installation through the display, through the display more convenient, direct demonstration pressure sensor's test numerical value.
Drawings
Fig. 1 is a schematic view of the entire structure of a pressure type liquid viscometer without a safety frame.
1-sliding guide rail, 2-sliding screw rod, 3-screw rod sliding seat, 4-motor, 5-pressure sensor, 6-sensing connector, 7-hollow push-pull rod, 8-display, 9-display fixing frame, 10-base, 11-liquid suction tube, 12-fixing frame.
Detailed Description
The following is a clear and complete description of the technical solutions in the embodiments of the present invention, which is combined with the drawings in the embodiments of the present invention, and the embodiments described below are only a part of the embodiments of the present invention, not all embodiments; based on the embodiments in the technical solution, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a pressure type liquid viscometer includes a transmission device, a pressure generating device, a pressure measuring device and a display device, which are all integrated on a base 10. The periphery of the transmission device is provided with a safety frame for improving the safety of the pressure type liquid viscometer during operation. The transmission device comprises a motor 4, a sliding screw rod 2, a screw rod sliding seat 3 and a sliding guide rail 1, wherein the motor 4 drives the sliding screw rod 2 to rotate, and the sliding screw rod 2 drives the screw rod sliding seat 3 to do reciprocating linear motion on the sliding guide rail 1 when rotating. The pressure measuring device comprises a pressure sensor 5 and a sensing connector 6, wherein the pressure sensor 5 is detachably connected with a hollow push-pull rod 7 through the sensing connector 6, and the pressure generated by the flowing of liquid to be measured is measured through a probe in the pressure sensor.
The pressure generating device comprises a liquid suction pipe 11, a hollow push-pull rod 7, a fixed frame 12 and a bottom cover. The fixing frame 12 is installed on the base 10, and one end of the fixing frame 12 is clamped with the top of the liquid suction pipe 11, and the other end of the fixing frame 12 is clamped with the bottom of the liquid suction pipe 11, so as to fix the liquid suction pipe 11. The range of the liquid suction pipe 11 is between 0.1ml and 10ml, the liquid suction pipes 11 with different ranges can be selected according to the amount of the liquid reagent, and the liquid suction pipes 11 with different ranges are matched with different hollow push-pull rods 7, so that the viscosity test of trace liquid can be realized. The liquid suction pipe 11 sucks liquid to be detected through the bottom and holds the liquid to be detected before testing, a hollow channel is arranged inside the hollow push-pull rod 7, one end of the hollow push-pull rod 7 extends into the liquid suction pipe 11, and the other end of the hollow push-pull rod extends out of the liquid suction pipe 11. The end of the hollow push-pull rod 7 extending out of the liquid suction pipe 11 is detachably connected with the sensing connector 6, so that the liquid suction pipes 11 with different measuring ranges can be replaced conveniently. The end, extending into the liquid suction pipe 11, of the hollow push-pull rod 7 is connected with a piston, the hollow push-pull rod 7 is connected with the liquid suction pipe 11 in an adherence mode through the piston, the end, extending out of the liquid suction pipe 11, of the hollow push-pull rod 7 extends into a probe of the pressure sensor 5, and the probe of the pressure sensor 5 extends to the piston and is used for detecting the pressure required by the piston to extrude liquid to be detected. The bottom cover is detachably connected with the bottom of the liquid suction pipe 11, when the liquid suction pipe 11 needs to suck liquid to be tested, the bottom cover is in an open state, and when the pressure of the liquid to be tested is tested, the bottom cover is hermetically connected with the liquid suction pipe 11. The display 8 is electrically connected to the pressure sensor 5 for displaying the measured value of the pressure sensor 5. A display fixing frame 9 is arranged at the periphery of the display and used for fixing the display, and the display fixing frame 9 is integrated on the base 10.
The inventor drives the hollow push-pull rod 7 to move upwards through the transmission device, the hollow push-pull rod 7 is matched with the piston to realize that the liquid suction pipe 11 sucks liquid to be detected, and the bottom of the liquid suction pipe 11 is sealed by the bottom cover after the liquid to be detected is sucked. The hollow push-pull rod 7 is driven by the transmission device to downwards extrude the liquid to be measured, the bottom of the liquid suction pipe 11 is sealed, the piston acts on the extrusion force of the liquid to be measured, the liquid to be measured can generate a reaction force which is equal to the extrusion force in magnitude and opposite in direction, so that the liquid to be measured rises through the hollow channel of the hollow push-pull rod 7, the probe of the pressure sensor in the hollow push-pull rod 7 accurately measures the resistance of the liquid to be measured to the piston to push the liquid to be measured to move, and the pressure to be applied is known. The viscosity of a substance is calculated by accurately measuring the relationship between the viscosity of a known substance and the pressure applied during movement, and drawing a data curve, so that the pressure required by movement of a small amount of a substance with unknown viscosity is tested.
Claims (10)
1. A pressure type liquid viscometer is characterized by comprising
A transmission device;
the pressure generating device is connected with the transmission device and is driven by the transmission device to enable the liquid to be detected to flow in the pressure generating device;
the pressure measuring device comprises a pressure sensor, the pressure sensor is connected with the pressure generating device, and the pressure generated by the flowing of the liquid to be measured in the pressure generating device is measured through a probe in the pressure sensor.
2. The pressure type liquid viscometer of claim 1, further comprising a display device including a display electrically connected to the pressure sensor and displaying a measurement value of the pressure sensor.
3. The pressure type liquid viscometer described in claim 1 or 2, wherein the pressure generating means includes a liquid suction tube for holding a liquid to be measured;
the outer side of one end of the hollow push-pull rod is connected with a piston, the piston is in sliding connection with the inside of the liquid suction pipe, the other end of the hollow push-pull rod extends out of the liquid suction pipe, and a probe in the pressure sensor extends into one end, far away from the piston, of the hollow push-pull rod and extends to the end of the piston;
the bottom cover is detachably connected with the liquid suction pipe.
4. The pressure liquid viscometer of claim 3, wherein the liquid extraction tube can range from 0.1ml to 10ml.
5. Pressure liquid viscometer of claim 4, wherein the pressure measurement device further includes a sensing connector, the pressure sensor being removably connected to the hollow push-pull rod by the sensing connector.
6. Pressure liquid viscometer according to claim 5, characterized in that the transmission is a linear transmission.
7. The pressure type liquid viscometer of claim 6, wherein the linear drive is selected from at least one of a lead screw drive, a synchronous belt drive, a push rod drive, and a cylinder drive.
8. The pressure liquid viscometer of claim 7, wherein the linear drive is a screw drive, the screw drive including a sliding screw;
the motor is used for driving the sliding screw rod to rotate;
the screw rod sliding seat is arranged on the sliding screw rod and is respectively connected with the hollow push-pull rod and the pressure measuring device;
and the sliding guide rail is connected with the screw rod sliding seat in a sliding manner.
9. The pressure type liquid viscometer of claim 1 or 2, further comprising a base, the transmission, the pressure generating device, the pressure measuring device, and the display device being integrally mounted on the base.
10. A pressure type liquid viscometer as recited in claim 9, further comprising a fixing frame, wherein the fixing frame is mounted on the base, and one end of the fixing frame is connected to the top of the liquid suction tube and the other end is connected to the bottom of the liquid suction tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221417212.6U CN218297927U (en) | 2022-06-08 | 2022-06-08 | Pressure type liquid viscometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221417212.6U CN218297927U (en) | 2022-06-08 | 2022-06-08 | Pressure type liquid viscometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218297927U true CN218297927U (en) | 2023-01-13 |
Family
ID=84788377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221417212.6U Active CN218297927U (en) | 2022-06-08 | 2022-06-08 | Pressure type liquid viscometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218297927U (en) |
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2022
- 2022-06-08 CN CN202221417212.6U patent/CN218297927U/en active Active
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