CN110459117B - Liftable small-size process control experiment teaching device - Google Patents
Liftable small-size process control experiment teaching device Download PDFInfo
- Publication number
- CN110459117B CN110459117B CN201910756952.9A CN201910756952A CN110459117B CN 110459117 B CN110459117 B CN 110459117B CN 201910756952 A CN201910756952 A CN 201910756952A CN 110459117 B CN110459117 B CN 110459117B
- Authority
- CN
- China
- Prior art keywords
- container
- liquid
- liquid tank
- containers
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Abstract
The invention discloses a liftable small-sized process control experiment teaching device, which comprises a liquid tank, a lifting device and a control device, wherein the liquid tank is arranged on the lifting device; the top of the liquid tank is provided with a liquid tank cover plate, and the liquid tank cover plate is provided with a plurality of lifting devices; a corresponding container is placed on the lifting device; the liquid tank is provided with a liquid feeding pipeline, the liquid feeding pipeline comprises a main pipe, the rear section of the main pipe is provided with a plurality of outlet branches, the outlet branches are respectively connected to the tops of the side surfaces of the containers, and the initial section of the liquid feeding pipeline is provided with an inlet valve; in the liquid tank, a submersible pump is arranged at the initial section of the liquid conveying pipeline; connecting pipelines are arranged between the top ends of the containers, and the connecting positions of the connecting pipelines and the connecting positions of the branch pipelines are in the same horizontal position; the bottom of each container side is provided with a liquid drainage pipeline connected to the liquid tank; the back of the top of the container is provided with an overflow line connected to the liquid tank. The invention can realize the process control experiment teaching in the vertical direction on the basis of the prior art by arranging the lifting structure.
Description
Technical Field
The invention relates to experimental equipment for teaching, in particular to a liftable small process control experimental teaching device.
Background
In the practice teaching of the measurement and control and over-control specialties, particularly the measurement and control technology and instrument, process equipment and control engineering specialties, a process control experimental device platform is needed so that students can more clearly know the working principle of process control. The three-liquid-containing tank is a typical abstract model of a plurality of controlled objects in an industrial process and has wide representativeness in nonlinear and large-inertia process control research application. The test, measurement, automatic control and application of the liquid level, flow and pressure of the three-container liquid tank can be used as typical experimental teaching contents of measurement and control and over-control major. The physical quantity that current small-size process control experiment teaching device measured is single, and the pipeline is single, can't carry out the experiment of complicated disturbance experiment and multiloop, and the relative height of liquid case can't be adjusted according to the difference of experiment, and experiment teaching demonstration result is relatively poor.
In order to solve the problems, the Chinese patent with the publication number of CN205140357U provides a small process control practical training device, which performs horizontal multi-capacity experiments and vertical multi-capacity experiments of a liquid tank by arranging 4 valves between 3 containers. But the hydraulic motion in its experiment process still relies on hydraulic pump pressure to realize completely for the realization data that each group of experimental apparatus obtained are the same, do not have the commonality, and the function is comparatively single. Similar problems generally exist with other prior art devices. Therefore, more diversified experimental environments cannot be provided, the requirements of teaching tests cannot be met, particularly, the height difference cannot be intuitively simulated, the part of experiments are often directly ignored in practice teaching, or related experiments are carried out by adopting a raising mode, and the accuracy control and the convenience degree of the experiment cannot meet the requirements of the experiments far away.
Disclosure of Invention
In order to solve the problems, the invention provides a liftable small-sized process control experiment teaching device, which can further realize process control experiment teaching in the vertical direction on the basis of the prior art by arranging a lifting structure.
The technical scheme of the invention is as follows:
a liftable small-sized process control experiment teaching device comprises a liquid tank;
the top of the liquid tank is provided with a liquid tank cover plate, and the liquid tank cover plate is provided with a plurality of lifting devices;
a corresponding container is placed on the lifting device;
the liquid tank is provided with a liquid feeding pipeline, the liquid feeding pipeline comprises a main pipe, the rear section of the main pipe is provided with a plurality of outlet branches, the outlet branches are respectively connected to the tops of the side surfaces of the containers, and the outlet branches are provided with a plurality of branch valves;
in the liquid tank, a submersible pump is arranged at the initial section of the liquid conveying pipeline;
connecting pipelines are arranged between the top ends of the containers, and the connecting positions of the connecting pipelines and the connecting positions of the branch pipelines are in the same horizontal position;
the bottom of the side surface of each container is provided with a liquid discharge pipeline connected to the liquid tank, and each liquid discharge pipeline is provided with an outlet valve;
the back of the top of each container is provided with an overflow pipeline which is connected to the liquid tank;
the main pipe of the liquid delivery pipeline is a hard pipeline, and the outlet branch, the liquid discharge pipeline, the connecting pipeline and the overflow pipeline are all metal hoses.
Further, there are 3 containers, be No. one container, No. two containers, No. three containers respectively, and 3 containers are the cuboid tubular structure that the size is the same, and its top is open structure.
Further, all be equipped with the level gauge on 3 containers, be equipped with temperature sensor and heating device in at least one of 3 containers, be equipped with pressure sensor and flowmeter on sending the liquid pipeline to be responsible for, the liquid case front end is equipped with the controller connecting plate, and temperature sensor, pressure sensor, flowmeter, heating device, valve, water pump etc. all are connected to the controller connecting plate through the data line, are equipped with PLC control interface and DDC controller interface on the controller connecting plate.
Furthermore, the lifting device is a shear lifting platform and structurally comprises two rows of cross-connected hinge link mechanisms, the hinges of the two rows of cross-connected hinge link mechanisms are connected through connecting rods, coaxial threaded holes are formed in the middle of two connecting rods which are arranged in parallel with the horizontal plane, the spiral directions of the two threaded holes are opposite, the threaded holes are of a trapezoidal thread structure, a connecting adjusting threaded rod is arranged between the threaded holes, the adjusting threaded rod is a trapezoidal thread and is divided into two parts, and the spiral directions of the two parts are opposite;
the bottom of the cross-connection hinge connecting rod mechanism is provided with a fixed structure, the other connecting rod is provided with a matched sliding groove, the hinge slides in the sliding groove, and the sliding groove is provided with displacement scales which are used for marking the real-time height of the container.
Furthermore, one end of the adjusting threaded rod is a polygonal block, such as a rectangle, a matched rotating nut is arranged outside the adjusting threaded rod, the inside of the rotating nut is matched with the polygonal block, a communicated threaded hole is arranged on the side surface of the rotating nut and the side surface of the polygonal block and is used as a rotating threaded hole, a connecting bolt is matched with the rotating nut, the side surface of the rotating nut is of a gear structure, and a locking nut group is arranged at the other end of the adjusting threaded rod.
Furthermore, the locking nut group comprises two nuts, a through hole is formed in each nut, the through holes have certain inclination, the through holes are coaxial after the two nuts are attached tightly, and a matched pin is inserted into each through hole to fix the locking nut group. Specifically, the slope is: 1:200.
Furthermore, the rotating nut is provided with a matched rotating spanner, the rotating spanner main body is a disc, a gear-shaped hole matched with the periphery of the rotating nut is formed in the disc, and two symmetrical handles are arranged on the outer side of the disc.
Compared with the prior art, the invention has the beneficial effects that:
1. the liftable small-sized process control experiment teaching device has clear structure and is stable and reliable;
2. the section of the container of the liftable small-sized process control experiment teaching device is square, the sectional area is larger, and the control effect is better;
3. the top end of the first container, the second container and the third container of the liftable small process control experiment teaching device is communicated with each other through a connecting pipeline, the connecting pipeline is a metal hose, overflow pipes are arranged on 3 containers, the overflow pipes are metal hoses, and 3 overflow pipes enable 3 containers not to interfere with each other, so that overflow protection is better realized;
4. the lifting device of the liftable small process control experiment teaching device is positioned between the container and the liquid tank cover plate, can be disassembled, and is more beneficial to later maintenance;
5. the 3 lifting devices of the liftable small-sized process control experiment teaching device are mutually independent, and the relative position height between the 3 containers can be changed, so that not only can a horizontal multi-volume test be carried out, but also a vertical multi-volume test can be carried out, each experimental device can measure different data, the data is more universal and truthful, and the operability of students is stronger;
6. the metal hose connection of the liftable small process control experiment teaching device not only can enable the relative height among 3 containers to be variable, but also can ensure the connection tightness of the whole device;
7. the liftable small-sized process control experiment teaching device can realize PID control, cascade control, ratio control and the like of four thermal parameters of liquid level, pressure, flow and temperature;
8. the liftable small-sized process control experiment teaching device is provided with a PLC interface and a DDC interface on a controller connecting plate, thereby realizing PLC teaching;
9. the lifting device adopts a manual operation mode, so that the manual ability and the participation degree of students are improved, the lifting mechanism can adjust different heights and is convenient to observe the real-time height position, the position of the lifting device can be fixed and maintained in a mode of taking down a rotating nut or linking a locking nut group and the like after adjustment, and the lifting device can be more effectively fixed by arranging a matched rotating wrench.
Drawings
FIG. 1 is a schematic diagram of a liftable small-sized process control experiment teaching device;
FIG. 2 is a schematic diagram of a circuit connection for a liftable small-scale process control experimental teaching device;
FIG. 3 is a schematic cross-sectional view of the third container taken along line E-E of FIG. 1;
FIG. 4 is a schematic structural view of the lifting device;
FIG. 5 is a schematic view of the adjustment screw rod;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a schematic view of the rotary wrench;
fig. 8 is a three-dimensional schematic diagram of the present invention used as a vertical multi-volume experiment.
In the figure: 1-liquid tank, 2-liquid tank cover plate, 3-lifting device, 4-liquid level meter, 5-metal hose, 6-branch valve, 7-first container, 8-second container, 9-third container, 10-temperature sensor, 11-inlet pipeline main section, 12-inlet valve, 13-flowmeter, 14-pressure sensor, 15-controller connecting plate, 16-adjusting threaded rod, 17-U-shaped heating pipe, 18-PWM submersible pump, 19-displacement scale, 20 rotary wrench, 21-outlet valve,
1601-rotating nut, 1602-rotating threaded hole, 1603-polygonal block, 1604-limiting stop piece, 1605-right-handed thread section, 1606-left-handed thread section, 1607-locking nut group, 1608-through hole, 1609-pin, 1610-connecting bolt,
2001-disc, 2002-gear type hole, 2003-handle.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
Referring to fig. 1 to 3, in the embodiment of the present invention, a liftable small-sized process control experiment teaching device includes a water tank 1, a water tank cover plate 2, a lifting device 3, a liquid level meter 4, a metal hose 5, a branch valve 6, a first container 7, a second container 8, a third container 9, a temperature sensor 10, an inlet pipeline main section 11, an inlet valve 12, a flowmeter 13, a pressure sensor 14, a controller connecting plate 15, a threaded rod 16, a heating device, and a PWM submersible pump 18, wherein the water tank cover plate 2 is fixed on the water tank 1, three containers are respectively the first container 7, the second container 8, and the third container 9, the top ends of the three containers are communicated through connecting pipelines, the connecting pipelines are metal hoses, the three containers are provided with overflow pipelines, the overflow pipelines are metal hoses, the three overflow pipelines are provided for realizing overflow protection of the three containers and do not interfere with each other, be equipped with connecting line between two adjacent containers, in order to guarantee that the relative position height between container 7, No. two containers 8 and No. three containers 9 can change wantonly and can not influence the leakproofness, inlet pipe main section 11 links to each other with tank lid board 2, and be equipped with inlet valve 12 in the junction, inlet pipe main section 11 is the hard tube, and set up to C style of calligraphy loop, the latter half is at tank lid board 2 upper surface, so that installation flowmeter 13 and pressure sensor 14, and adopt metal collapsible tube 5 in the export branch, in order to guarantee that the relative position height between container 7, No. two containers 8 and No. three containers 9 can change wantonly and can not influence the leakproofness, all be equipped with outlet line and outlet valve 21 in three container side bottoms. The branch valve 6 is an electric ball valve, the inlet valve 12 is a manual ball valve, and the first container 7, the second container 8 and the third container 9 are all square containers, so that the sectional area is larger, and the control effect is better; the three lifting devices 3 are uniformly fixed on the water tank cover plate 2 at intervals and located between three containers and the water tank cover plate 2, the connection between the containers and the lifting devices 3 is realized through threads or clamping devices, the lifting devices 3 enable the relative position height between the three containers to be changed randomly, so that a horizontal multi-volume test and a vertical multi-volume test can be performed, the measurable data of each experimental device is different, a PWM (pulse-width modulation) submersible pump 18 is arranged in the water tank 1, the PWM submersible pump 18 generates outlet branches through an inlet pipeline main section 11 and is respectively connected to a first container 7, a second container 8 and a third container 9, the liftable small process control experiment teaching device adopts a PWM-controlled direct-current three-phase speed regulation water pump, the control range is 2V-24V, the control range is 8% -100%, and the lifting device is more reliable, The noise is lower, and the submersible pump has excellent heat dissipation in water; the pressure sensor 14 and the flowmeter 13 are arranged on an inlet pipeline main section 11 between the PWM submersible pump 18 and the first container 7, the liquid level meters 4 are arranged on the first container 7, the second container 8 and the third container 9, the temperature sensors 10 are arranged on the first container and the second container 8, the number of the pressure sensor 14 and the flowmeter 13 is one, the number of the liquid level meters 4 is three, the number of the temperature sensors 10 is two, the control is comprehensive, and high-level experiments such as temperature, pressure, flow and liquid level control, cascade and feed-forward feedback can be realized, so that the experiment efficiency is improved; the heating device is a U-shaped heating pipe 17, the U-shaped heating pipe 17 is positioned inside the third container 9, and the number of the U-shaped heating pipes is one; the front end of the water tank 1 is provided with a controller connecting plate 15, the controller connecting plate 15 is provided with a PLC (programmable logic controller) interface and a DDC (direct digital control) controller interface, all PLC controllers or DDC controllers can be supported, such AS controllers S7-200, S7-300, AS3700 and the like, and the PLC controller interface can be connected with an industrial PLC (programmable logic controller), so that the teaching of the PLC is realized; the liftable small-size process control experiment teaching device adopts 24V 5A's power adapter for entire system is safer.
Example 2
As shown in fig. 1, 3, 4, 5, 6, and 7, the three lifting devices 3 are small mechanical shear lifting platforms, which are respectively located at the bottom of the first container 7, the second container 8, and the third container 9, and are connected to the top of the tank cover plate 2; mutual independence between three elevating gear 3, under not reaching extreme position, three elevating gear can not mutual interference, and elevating gear 3's mutual independence makes mutual independence between container 7, No. two container 8 and No. three container 9 to reach the relative vertical displacement between the three container and can change. The change of the relative vertical displacement among the three containers is very important to be applied in a real scene, for example, if water supply is to be carried out on different floors of an apartment, simulation analysis can be carried out through the experimental device, the heights of the different floors are changed into the relative vertical heights of the first container 7, the second container 8 and the third container 9 according to the 'similarity principle', the actual pump pressure is converted into the pump pressure of the PWM submersible pump 18 in the experimental device, then the states of the containers are recorded in real time through the pressure sensor 14 and the flowmeter 13, and finally the water inflow is controlled in real time through the PLC or DDC controller connected with the controller connecting plate 15.
The lifting device 3 is structurally characterized in that two rows of cross-connected hinge link mechanisms are adopted, hinges of the two rows of cross-connected hinge link mechanisms are connected through connecting rods, coaxial threaded holes are formed in the middle parts of two connecting rods which are arranged in parallel with a horizontal plane, the spiral directions of the two threaded holes are opposite, the threaded holes are in a trapezoidal thread structure, a connecting adjusting threaded rod 16 is arranged between the threaded holes, and the adjusting threaded rod 16 is a trapezoidal thread and is divided into a right-handed thread section 1605 and a right-handed thread section 1606; the bottom of the cross connection hinge link mechanism is provided with a fixed structure, the other is provided with a matched sliding groove, a hinge slides in the sliding groove, the sliding groove is provided with a displacement scale 19, the displacement scale 19 is used for marking the real-time height of the container, one end of the adjusting threaded rod 16 is a polygonal block 1603, such as a rectangle, the outer part of the adjusting threaded rod is provided with a matched rotating nut 1601, the inner part of the rotating nut 1601 is matched with the polygonal block 1603, the side surface of the rotating nut 1601 and the side surface of the polygonal block 1603 are both provided with a communicated threaded hole as a rotating threaded hole 1602 which is matched with a connecting bolt 1610, the side surface of the rotating nut 1601 is of a gear structure, the other end of the adjusting threaded rod 16 is provided with a locking nut group 1607, the locking nut group 1607 comprises two nuts, both of which are provided with a through hole 1608, the through holes have certain inclination, the through holes are coaxial after the two nuts are tightly attached, and a matched pin 1609 is inserted in the through holes, to secure the lock nut assembly. The specific structure of the pin 1609 is that the body of the pin has a 1:200 inclination and a flat head for easy insertion and removal.
The rotary nut 1601 is provided with a matched rotary wrench 20, the main body of the rotary wrench 20 is a disc 2001, a gear-shaped hole 2002 matched with the periphery of the rotary nut 1601 is arranged in the disc 2001, and two symmetrical handles 2003 are arranged on the outer side of the disc 2001.
When the height is initially set, the container is taken down, the two ends of the adjusting threaded rod 16 are respectively inserted into the threaded holes of the lifting device 3, then the adjusting threaded rod 16 is installed, the rotary wrench is assembled, the adjusting threaded rod 16 is rotated by the rotary wrench 20 to be adjusted to a proper height, then the locking nut group 1607 and the pin 1609 thereof are installed, the container is placed, and if the height needs to be adjusted in subsequent experiments, the locking nut group 1607 is taken down, rotated by the rotary wrench 20 and observed.
Example 3
The U-shaped heating pipes 17 are located inside the third container 9, the number of the U-shaped heating pipes is one, the temperature sensors 10 are located inside the first container 7, the second container 8 and the third container 9, the number of the temperature sensors is three, the PWM submersible pumps 18 are started, the opening degrees of the inlet valves 12 and the outlet valves 21 are kept unchanged, the target temperature in the third container 9 is set, the U-shaped heating pipes 17 in the third container 9 are started to start heating, the temperature sensors 10 measure the real-time temperature in the containers, and the U-shaped heating pipes can be used for simulating a pure hysteresis experiment under temperature control (from setting the set temperature to detecting the time required by the temperature reaching the set value, namely, the hysteresis time) and the application in embodiment 2.
Example 4
The three containers are all provided with the temperature sensors 10, the three containers are all provided with the U-shaped heating pipes 17, the U-shaped heating pipes 17 and the temperature sensors 10 in a single container can be used for temperature control and temperature hysteresis control experiments, the heating power of the U-shaped heating pipes 17 in the first container 7, the second container 8 and the third container 9 is controlled to be different by respectively setting the temperatures of the three containers, a certain temperature difference is kept, the working state of the preheater is simulated and tested, and the heat loss rate at different temperatures is tested at the same time.
In the embodiments, the liftable small-sized process control experiment teaching device provided by the invention adopts the metal hoses 5 at multiple positions, so that the device is firmer and more reliable and has good sealing property; the section of the container of the liftable small process control experiment teaching device is square, the sectional area is larger, and the control effect is better; the tops of a first container 7, a second container 8 and a third container 9 of the liftable small process control experiment teaching device are communicated through pipelines, an overflow pipeline is arranged on one container, and overflow protection of the three containers is realized through one overflow pipeline; in the liftable small process control experiment teaching device, an inlet valve 12 and a metal hose 5 are arranged between every two of the first container 7, the second container 8 and the third container 9 so as to ensure that the relative position heights of the first container 7, the second container 8 and the third container 9 can be changed at will without affecting the sealing property; the lifting device 3 of the liftable small process control experiment teaching device is positioned between the three containers and the water tank cover plate 2, so that the relative position heights of the three containers can be changed at will, a horizontal multi-volume test and a vertical multi-volume test can be carried out, and the measurable data of each experimental device are different; the liftable small-sized process control experiment teaching device adopts a PWM controlled direct current to three-phase speed regulation water pump, the control range is 2V-24V, the control range is 8% -100%, the device is more reliable, the noise is lower, and the submersible pump is in water and has excellent heat dissipation; the liftable small-size process control experiment teaching device contains a pressure sensor 14, a flowmeter 13, three level gauge 4, three temperature sensor 10, and control is comprehensive, can realize the PID control of four thermal engineering parameters of temperature, pressure, flow, liquid level, cascade control to and ratio control etc.. In addition, 2-3 people can simultaneously carry out high-level experiments such as temperature, flow, liquid level and pressure control, cascade, feedforward feedback and the like so as to improve the experiment efficiency; the U-shaped heating pipe 17 of the small liftable process control experiment teaching device is positioned inside the third container 9; the liftable connecting plate 15 of the controller of the small process control experiment teaching device is provided with a PLC (programmable logic controller) interface and a DDC (direct digital control) controller interface, and can support all PLC controllers or DDC controllers, and the PLC controller interface can be connected with an industrial PLC (programmable logic controller), so that the teaching of the PLC is realized; the liftable small-size process control experiment teaching device adopts 24V 5A's power adapter for entire system is safer.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A liftable small-sized process control experiment teaching device comprises a liquid tank;
the top of the liquid tank is provided with a liquid tank cover plate, and the liquid tank cover plate is provided with a plurality of lifting devices;
a corresponding container is placed on the lifting device;
the liquid tank is provided with a liquid feeding pipeline, the liquid feeding pipeline comprises a main pipe, the rear section of the main pipe is provided with a plurality of outlet branches, the outlet branches are respectively connected to the tops of the side surfaces of the containers, the initial section of the liquid feeding pipeline is provided with an inlet valve, and the outlet branches are provided with a plurality of branch valves;
in the liquid tank, a submersible pump is arranged at the initial section of the liquid conveying pipeline;
connecting pipelines are arranged between the top ends of the containers, and the connecting positions of the connecting pipelines and the connecting positions of the branch pipelines are in the same horizontal position;
the bottom of the side surface of each container is provided with a liquid discharge pipeline connected to the liquid tank, and each liquid discharge pipeline is provided with an outlet valve;
the back of the top of each container is provided with an overflow pipeline which is connected to the liquid tank;
the main pipe of the liquid conveying pipeline is a hard pipeline, and the outlet branch, the liquid discharge pipeline, the connecting pipeline and the overflow pipeline are all metal hoses;
the lifting device is a shear lifting platform and structurally comprises two rows of cross-connected hinge link mechanisms, the hinges of the two rows of cross-connected hinge link mechanisms are connected through connecting rods, coaxial threaded holes are formed in the middle parts of two connecting rods which are arranged in parallel with the horizontal plane, the spiral directions of the two threaded holes are opposite, the threaded holes are in a trapezoidal thread structure, an adjusting threaded rod is arranged between the threaded holes, the adjusting threaded rod is a trapezoidal thread and is divided into two parts, and the spiral directions of the two parts are opposite;
the hinge is connected with the bottom of the connecting rod mechanism in a cross way, one connecting rod is a fixed structure, the other connecting rod is provided with a matched sliding groove, the hinge slides in the sliding groove, and displacement scales are arranged on the sliding groove and used for marking the real-time height of the container;
one end of the adjusting threaded rod is a polygonal block, a matched rotating nut is arranged outside the polygonal block, the interior of the rotating nut is matched with the polygonal block, a communicated threaded hole is arranged on the side surface of the rotating nut and the side surface of the polygonal block and serves as a rotating threaded hole, a connecting bolt is matched with the side surface of the rotating nut, the side surface of the rotating nut is of a gear structure, and a locking nut group is arranged at the other end of the adjusting threaded rod;
the locking nut group comprises two nuts, a through hole is formed in each of the two nuts and has a certain inclination, the through holes are coaxial after the two nuts are tightly attached, and a matched pin is inserted into each through hole to fix the locking nut group;
the rotary nut is provided with a matched rotary spanner, the rotary spanner main body is a disc, a gear-shaped hole matched with the periphery of the rotary nut is formed in the disc, and two symmetrical handles are arranged on the outer side of the disc.
2. The liftable small-sized process control experiment teaching device as claimed in claim 1, wherein the number of the containers is 3, the containers are respectively a first container, a second container and a third container, the 3 containers are all cuboid cylindrical structures with the same size, and the top ends of the containers are of open structures.
3. The liftable small-sized process control experiment teaching device as claimed in claim 2, wherein liquid level meters are arranged on 3 containers, a temperature sensor and a heating device are arranged in at least one of the 3 containers, and a pressure sensor and a flow meter are arranged on the main pipe of the liquid delivery pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756952.9A CN110459117B (en) | 2019-08-16 | 2019-08-16 | Liftable small-size process control experiment teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756952.9A CN110459117B (en) | 2019-08-16 | 2019-08-16 | Liftable small-size process control experiment teaching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110459117A CN110459117A (en) | 2019-11-15 |
| CN110459117B true CN110459117B (en) | 2022-03-18 |
Family
ID=68487106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910756952.9A Active CN110459117B (en) | 2019-08-16 | 2019-08-16 | Liftable small-size process control experiment teaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110459117B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115273641A (en) * | 2022-07-21 | 2022-11-01 | 日照市海洋生物工程技术研究中心 | Liquid conveying teaching demonstration system for intelligent food processing |
| CN116279292B (en) * | 2022-09-09 | 2024-03-22 | 浙江赛格教仪科技有限公司 | Intelligent cabin personnel identification system for automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236209A (en) * | 2013-05-13 | 2013-08-07 | 青岛理工大学 | Riverway cross-section two-dimensional underground seepage hydraulic experiment device |
| CN206379106U (en) * | 2016-08-18 | 2017-08-04 | 哈尔滨理工大学 | One kind three holds high water tank control experimental teaching unit |
| CN206687067U (en) * | 2017-04-06 | 2017-12-01 | 安徽工程大学 | Microwave drying material system |
| CN208880065U (en) * | 2018-08-30 | 2019-05-21 | 合肥亿翔智能制造有限公司 | Ejecting mechanism is used in a kind of clamping of automobile support side |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB221433A (en) * | 1924-03-13 | 1924-09-11 | Thomas Owen Walton | Improvements in or relating to lock nuts |
| TW201118264A (en) * | 2009-11-27 | 2011-06-01 | Wen-Yue Xu | Self-tapping screw |
| CN202577063U (en) * | 2012-01-06 | 2012-12-05 | 同济大学 | Split-type locknut component |
| CN203669321U (en) * | 2013-12-03 | 2014-06-25 | 江苏天任建设装备有限公司 | Spigot-and-socket disk-buckle type steel pipe scaffold |
| CN205140357U (en) * | 2015-08-13 | 2016-04-06 | 北京华晟云联科技有限公司 | Real device of instructing of small -size process control |
| CN205927905U (en) * | 2016-08-16 | 2017-02-08 | 贵州航锐航空精密零部件制造有限公司 | Anchor clamps at centre gripping screw thread position |
| CN206468667U (en) * | 2017-01-24 | 2017-09-05 | 大峘集团有限公司 | A kind of bidirectional helical Anti-looseness bolt device |
| CN207145814U (en) * | 2017-08-16 | 2018-03-27 | 王磊 | A kind of easy-to-dismount corrosion-resistanting insulation pipe |
| CN208673581U (en) * | 2018-02-09 | 2019-03-29 | 清华大学 | A kind of hydraulic experiment platform of adjustable head |
| CN108374828A (en) * | 2018-05-08 | 2018-08-07 | 林平 | Anti-loosening nut |
-
2019
- 2019-08-16 CN CN201910756952.9A patent/CN110459117B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236209A (en) * | 2013-05-13 | 2013-08-07 | 青岛理工大学 | Riverway cross-section two-dimensional underground seepage hydraulic experiment device |
| CN206379106U (en) * | 2016-08-18 | 2017-08-04 | 哈尔滨理工大学 | One kind three holds high water tank control experimental teaching unit |
| CN206687067U (en) * | 2017-04-06 | 2017-12-01 | 安徽工程大学 | Microwave drying material system |
| CN208880065U (en) * | 2018-08-30 | 2019-05-21 | 合肥亿翔智能制造有限公司 | Ejecting mechanism is used in a kind of clamping of automobile support side |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110459117A (en) | 2019-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110459117B (en) | Liftable small-size process control experiment teaching device | |
| CN110608878B (en) | Detection apparatus for simulation deep sea environment rotary motion sealing washer sealing performance | |
| CN105158077A (en) | Water pressure environment simulation test device | |
| CN103512723B (en) | A kind of experiment and measuring system of twisting visual research of turning for Pulsating Flow fluidised form | |
| CN109490124A (en) | Intelligent recycle stream dynamic formula erosion corrosion pilot system and test method | |
| CN109186999A (en) | A kind of valve detection device and its application method | |
| CN210349017U (en) | Liftable small-size process control experiment teaching device | |
| CN111624327B (en) | Karst pipeline slip casting shutoff test device | |
| CN208334081U (en) | A kind of PVC pipe pressure device | |
| CN106932215B (en) | Experimental device for simulating closed conveying of long-distance liquid conveying pipeline | |
| CN204386715U (en) | For the thermostatically-controlled equipment of engine coolant | |
| CN114098944A (en) | Full-automatic intelligent skin cryotherapy liquid nitrogen gun with multiple sensors and integrated driving and control functions and control method thereof | |
| CN207418261U (en) | A kind of charge rifle of integrated Small Amount adjustment valve | |
| CN206804114U (en) | A kind of new magnetic double level gauge | |
| CN115492983A (en) | Automatic valve opening controller and control method thereof | |
| CN203745193U (en) | System for carrying out low temperature resistance experiment on valve quality | |
| CN215411419U (en) | Take heat preservation layer pressure pipeline on-line measuring device | |
| CN106935088A (en) | The analogue means and its control method of portable process industrial object | |
| CN201910160U (en) | Process control experimental device | |
| CN110751887A (en) | Quantitative pouring system for centrifugal casting physical simulation experiment and control method thereof | |
| CN102750866B (en) | Variable frequency control dynamic liquid level experiment equipment | |
| CN220602874U (en) | Gas well annulus simulation device and simulation system | |
| CN105183016B (en) | A kind of automatic water filling device and control method for steam pressure pipeline | |
| CN203177923U (en) | Oil-water separation metering device with controllable temperature | |
| CN214997619U (en) | Injury evaluation experimental device for permeability of injected water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |