CN205786524U - It is applied to the titrator of teaching - Google Patents
It is applied to the titrator of teaching Download PDFInfo
- Publication number
- CN205786524U CN205786524U CN201620355805.2U CN201620355805U CN205786524U CN 205786524 U CN205786524 U CN 205786524U CN 201620355805 U CN201620355805 U CN 201620355805U CN 205786524 U CN205786524 U CN 205786524U
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- China
- Prior art keywords
- teaching
- titrator
- titration
- casing
- peristaltic pump
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- 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.)
- Expired - Fee Related
Links
- 238000004448 titration Methods 0.000 claims abstract description 47
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000000954 titration curve Methods 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 239000011324 bead Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000002479 acid--base titration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
This utility model relates to the titrator being applied to teaching, including casing, casing connects the peristaltic pump being provided with transfusion power, cavity volume it is provided with in casing, the control system of the operation receiving instruction and control instrument it is provided with in cavity volume, the upper end of casing is provided with display operating process and the display screen of testing result, the side of casing is provided with height adjustable and removable support, wriggling delivery side of pump connects dismountable pump line, the upper end of pump line is connected on support, it is provided with titration curve, display screen and peristaltic pump in control system to be electrically connected with control system respectively.This utility model is by arranging titration curve in control system, and show in real time from display screen in titration process, more vivid in titration teaching show titration process, support can be dismantled, can also regulate height within the specific limits, whole instrument is light and handy, and structure design is simple, durable, low cost.
Description
Technical field
This utility model relates to teaching aid, more specifically refers to be applied to the titrator of teaching.
Background technology
Titrator is except carrying out potentiometric titration, including acid base titration, redox titration, sedimetry, complexometry
Outside with nonaquepous tration, it is possible to carry out permanent pH and measure.Photometric titration, polarometric titration, volumetric method Ka Shi moisture can be carried out by option
Titration and surfactant titrate, and wait titration assay method.When autotitrator and the full-automatic online use of Multi-example transducer,
Can not only efficiently realize the automatic measurement of a large amount of sample, moreover it is possible to the repeatability that raising is analyzed, reliability, simple to operate, save time
Laborsaving.It is applicable to quality control, checks, analyze, research, each side such as exploitation.
Traditional teaching titration appratus is the device that burette adds iron stand, has a disadvantage in that: need manual cleaning；Glass
Material is fragile；During field research, student is mostly first contacts, easily produces teaching accident or damage teaching sets
Standby.The most also there is full-automatic titrator at present, but instrument volume is big, expensive, it is not easy to research institutions and configures in a large number, more
Not readily portable, it is not easy to field experimentation teaching；Pipeline is many, cleans difficulty；It addition, also having some instruments is to use constant-current titration
Method, needs to be equipped with electrode, and instrument maintenance difficulty is big, is not suitable for teaching.Aspect in teaching is seen simultaneously, and pass student is for this
Plant large automatic, and safeguard and be worth the highest instrument, be not reaching to the purpose of teaching, otherwise, original theory and practice phase
In conjunction with teaching become study instrument use.
Use " titration " " teaching " as key word, search out 43 Patents, wherein, Chinese Patent Application No.
201420783759.7 disclose a kind of novel education experiment burette, including body and titration tube head；On described body
End is provided with funnel-shaped upper end mouth, and the tube wall of body is provided with graduation mark, and body lower end is provided with outer grinding port, and outer grinding port is provided with the
One passage, the junction of body bottom and outer grinding port upper end is provided with prolongs limit groove, prolongs limit groove and is provided with slide rail and bayonet socket, at the bottom of ground
Portion connects bias and lets slip a remark；Described titration tube head includes cannula portion and taper drip nozzle portion, the cannula portion that the ground with body matches
Top is provided with interior ground, and bottom is provided with leakage core, and described cannula portion is provided with the second ventilation with the first passage opposite position
Hole, cannula portion outer wall is provided with handle, along the card slide block being provided with the bayonet socket with body and slide rail matches in cannula portion.Chinese patent
Application number: 201520132417.3 disclose a kind of burette, by syringe, the graded tube of band bead, without bead
Graded tube forms, and syringe is made up of piston rod and syringe piston, without graded tube and the scale of band bead of bead
Pipe is tightly connected by connecting tube, and the position that in connecting tube, graded tube with band bead is connected is provided without bead graded tube
Valve, the position that the graded tube of band bead is connected with connecting tube arranges the graded tube valve of band bead, and bead is positioned at
The tune liquid upper piston area of the graded tube with bead, the outer wall without the graded tube of bead is cased with band vertical view steel wire, looks squarely steel
Silk and the steel wire ring looking up steel wire, steel wire ring slides up and down along graded tube, and has the screw rod of fixation.
The most traditional titration appratus, or full automatic large-scale titration appratus, it is impossible to reach guiding student study reason
The purpose of opinion knowledge, the more inconvenient theory and practice with teacher in field research experiment is combined.It is therefore desirable to design
Plant the titrator being applied to teaching, it is achieved theory and practice combined and simple in construction.
Utility model content
The purpose of this utility model is to overcome the defect of prior art, it is provided that be applied to the titrator of teaching.
For achieving the above object, this utility model is by the following technical solutions: be applied to the titrator of teaching, including machine
Shell, described casing connects the peristaltic pump being provided with transfusion power, is provided with cavity volume, is provided with reception in described cavity volume in described casing
The control system of the operation of instruction and control instrument, is provided with titration curve in described control system, the upper end of described casing is provided with
Display operating process and the display screen of testing result, the side of described casing is provided with height adjustable and removable support, described
Wriggling delivery side of pump connects dismountable pump line, and the upper end of described pump line connects on the bracket, described display screen with
And described peristaltic pump is electrically connected with described control system respectively.
Its further technical scheme is: described support includes that vertical bar and horizon bar, the lower end of described vertical bar pass through
Fixing screw connects on the housing, and the upper end of described vertical bar is connected with the inner ends thereof of described horizon bar, described level
The outer end of bar is vacant, and described pump line is connected to the outer end of described horizon bar.
Its further technical scheme is: the lower end of described vertical bar extends down, is plugged in the cavity volume of described casing, and
The lower end of described vertical bar connects has hasp, described hasp to be connected with described fixing screw.
Its further technical scheme is: the outer end of described horizon bar is provided with titration hole, and the lower end in described titration hole connects to be had
The projection vertically arranged down, the outer end of described pump line passes described titration hole, is embedded in described projection.
Its further technical scheme is: described in be applied to teaching titrator also include dismountable temperature probe, described
The inner of temperature probe connects on the housing, and outer end is vacant, and described temperature probe is electrically connected with described control system.
Its further technical scheme is: described casing is provided with the guidance panel providing guest operation interface, described operation
Panel is provided with several buttons.
Its further technical scheme is: described display screen is in tilted layout in described casing forward along top-down direction
Upper end.
Its further technical scheme is: described control system includes providing the power supply of electric energy, governor circuit, display to control
Circuit, peristaltic pump control circuit and storage circuit；Described titration curve it is provided with in described governor circuit；Described power supply, described
Display control circuit, described peristaltic pump control circuit and described storage circuit are electrically connected with described governor circuit respectively, institute
Stating display screen to be electrically connected with described display control circuit, described peristaltic pump is electrically connected with described peristaltic pump control circuit, institute
State temperature probe to be electrically connected with described governor circuit.
Its further technical scheme is: described peristaltic pump control circuit includes the power supply electricity of circuit board, input driving voltage
Press VBAT, the digital voltage DVDD of control voltage, control signal STM_XX of input control signal are provided and drip for control
The motor interface J4 of constant speed degree, motor interface J4 are connected with peristaltic pump, and supply voltage VBAT, digital voltage DVDD, control letter
Number STM_XX and motor interface J4 is electrically connected with described circuit board respectively.
This utility model compared with prior art provides the benefit that: the titrator being applied to teaching of the present utility model,
By arranging titration curve in control system, and show in real time from display screen in titration process, in titration teaching
More vivid shows titration process, and support can be dismantled, it is also possible to regulating height within the specific limits, whole instrument is light
Ingeniously, structure design is simple, durable, low cost.
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
The perspective view of the titrator being applied to teaching that Fig. 1 provides for this utility model specific embodiment；
The titration curve schematic diagram of the titrator being applied to teaching that Fig. 2 provides for this utility model specific embodiment；
The control principle block diagram of the titrator being applied to teaching that Fig. 3 provides for this utility model specific embodiment；
The circuit block diagram of the peristaltic pump control circuit that Fig. 4 provides for this utility model specific embodiment；
The circuit block diagram of the power supply that Fig. 5 provides for this utility model specific embodiment；
The circuit block diagram of the governor circuit that Fig. 6 provides for this utility model specific embodiment；
The circuit block diagram of the storage circuit that Fig. 7 provides for this utility model specific embodiment；
The circuit block diagram of the display control circuit that Fig. 8 provides for this utility model specific embodiment.
Reference
10 casing 11 display screens
20 vertical bar 30 horizon bars
40 titration hole 50 projections
60 temperature probes 70 fix screw
80 guidance panel 90 buttons
91 peristaltic pump 92 governor circuits
93 power supply 94 peristaltic pump control circuits
95 display control circuits 96 store circuit
Detailed description of the invention
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment to skill of the present utility model
Art scheme is further described and illustrates, but is not limited to this.
Specific embodiment as shown in Fig. 1～8, what the present embodiment provided is applied to the titrator of teaching, can be used in
In the teaching process of titration experiments, it is achieved the teaching method that theory and practice is combined.
Being applied to the titrator of teaching, including casing 10, this casing 10 can be the most square or circular in any shape
Deng, concrete shape is determined on a case-by-case basis.Casing 10 connects the peristaltic pump 91 being provided with transfusion power, is provided with appearance in casing 10
Chamber, is provided with the control system of the operation receiving instruction and control instrument in cavity volume, the upper end of casing 10 is provided with display operating process
With the display screen 11 of testing result, and, the side of casing 10 is provided with height adjustable and removable support, peristaltic pump 91 defeated
Going out to hold connection to have dismountable pump line, the upper end of this pump line is connected on support, the height of regulation support, i.e. adjustable titration height
Degree, convenient operation.
It addition, be provided with in control system titration curve (not marking in figure), display screen 11 and peristaltic pump 91 respectively with control
System processed is electrically connected with, and so, built-in titration curve can make that instrument is more vivid in teaching process shows titration process,
Reduce teacher in theoretical and in practical teaching workload.
The above-mentioned titrator being applied to teaching, by arranging titration curve, and at titration process in control system
In show in real time from display screen 11, more vivid in titration teaching showing titration process, support can be dismantled, it is possible to
To regulate height within the specific limits, whole instrument is light and handy, and structure design is simple, durable, low cost.
Above-mentioned support includes that vertical bar 20 and horizon bar 30, the lower end of vertical bar 20 are connected to by fixing screw 70
In casing 10, the upper end of vertical bar 20 is connected with the inner ends thereof of horizon bar 30, and so, horizon bar 30 can be with its inner for rotating
Fulcrum, rotates the direction adjusting titration；The outer end of horizon bar 30 is vacant, and pump line is connected to the outer end of horizon bar 30.
Vertically the lower end of bar 20 extends down, is plugged in casing 10 cavity volume, and the lower end connection of vertical bar 20 has hasp,
Hasp is connected with fixing screw 70, thus realizes the connection of vertical bar 20 and casing 10, when needing the height regulating vertical bar 20,
Having only to turn on fixing screw 70, move vertical bar 20 upward or down, during this, hasp is motionless, is adjusted to suitable position
Postponing, be locked screw 70, is fixed by vertical bar 20.
The outer end of horizon bar 30 is provided with titration hole 40, and the lower end in titration hole 40 connects the projection 50 vertically arranged down,
The outer end of pump line, through titration hole 40, is embedded in projection 50；As such, it is possible to reach effect fixing for pump line, and, convex
Post 50 vertically arrange that the liquid that pump line is exported the most vertically titrates.
In the present embodiment, the above-mentioned titrator being applied to teaching also includes dismountable temperature probe 60, and temperature is visited
The inner of 60 is connected in casing 10, and outer end is vacant, and temperature probe 60 is electrically connected with control system, and temperature probe 60 is in school
Automatically identify current liquid temperature during standard, feed back to panel, improve calibration accuracy.When need not use temperature probe
When 60, after can being pulled down, it is manually entered temperature.
Casing 10 is provided with the guidance panel 80 providing guest operation interface, and this guidance panel 80 is provided with several buttons
90 so that whole titrator has input function, can not jointing temp pop one's head in 60 time be manually entered temperature, easy to operate.
In the present embodiment, realizing data for the ease of academics and students's viewing, display screen 11 is along top-down direction
It is in tilted layout forward in the upper end of casing 10.
Further, with reference to Fig. 4 and Fig. 8, above-mentioned control system includes providing the power supply 93 of electric energy, governor circuit
92, display control circuit 95, peristaltic pump control circuit 94 and storage circuit 96；Wherein, governor circuit 92 is that whole control is
System main control part, for receive and send various instruction control whole system operation, and in be provided with above-mentioned titration curve；
Display control circuit 95 is for receiving the instruction of governor circuit 92, and controls display screen 11 and show corresponding information；Peristaltic pump control
Circuit 94 processed is for receiving the instruction of governor circuit 92, and controls the transfusion of peristaltic pump 91；Storage circuit 96 is by governor circuit 92
The storage of control realization data and reading so that whole titrator has data storage function, can store 2,000 groups of data, bag
Include numbering, volume, time, stoichiometric point, key point；Power supply 93, display control circuit 95, peristaltic pump control circuit 94 and
Storage circuit 96 is electrically connected with governor circuit 92 respectively, and display screen 11 is electrically connected with described display control circuit 95, wriggles
Pump 91 is electrically connected with peristaltic pump control circuit 94, and temperature probe 60 is electrically connected with governor circuit 92.
Further, peristaltic pump control circuit 94 includes circuit board, input the supply voltage VBAT of driving voltage, offer
Control the digital voltage DVDD of voltage, control signal STM_XX of input control signal and be used for controlling the motor of rate of titration
Interface J4, supply voltage VBAT, digital voltage DVDD, control signal STM_XX and motor interface J4 are electrical with circuit board respectively
Connecting, STM_XX is for controlling the parameters such as the speed of output, direction.R14, R19 together decide on the electric current of output, have both driven merit
Rate, the external peristaltic pump of J4 91, control rate of titration.
After J6 input electric energy, after over commutation and Filtering Processing, a part exports digital power through DVDD, and supply is main
Control circuit 92, display control circuit 95 and storage circuit 96 used by, respectively with governor circuit 92, display control circuit 95 and
DVDD on storage circuit 96 connects, and another part exports to used by peristaltic pump control circuit 94 through VBAT；Governor circuit
STM part on 92, as controlling output, for being connected with peristaltic pump control circuit 94, controls peristaltic pump chip；J7 connects temperature
Degree probe, inputs as temperature, and IOB is the control output end of instruction function, and SPI part is as bus, with storage circuit 96 even
Connect, it is achieved the storage of data controls；The S portion of governor circuit 92 is push button signalling, and the external world can be by key mode to master control electricity
Road 92 provides signal, Q5, Q6 to be used for controlling display lamp, and additionally LCM is mainly display screen and provides control signal；And show control electricity
Road 95 also includes the light on and off controlling audion；STM in peristaltic pump control circuit be mainly the internal motor of peristaltic pump time
The control signal of sequence, direction and switch, this control signal exports after peristaltic pump chip, controls peristaltic pump internal stepping electricity
The running of machine, thus reach to control multiple parameters such as titration speed, it is achieved the adjustability of titration.
In the present embodiment, the above-mentioned square-shaped layout of casing 10, and the corner angle of casing 10 be arc-shaped arrange, i.e. machine
The corner angle of shell 10 are through chamfered, owing to square instrument user is easily damaged scratch, and corner angle chamfering, it is not easy to scratch is damaged
User, display hommization is protruding, and the material of casing 10 is metal；Metal material shell, instrument is durable.
In other embodiments, above-mentioned casing 10 can be in polygon-shaped layout, it is not limited to the present embodiment provides
Square shape is arranged.
In other embodiments, the material of above-mentioned casing 10 can be plastics etc., it is not limited to the present embodiment provides
Metal material.
It is provided with rotor in above-mentioned peristaltic pump 91, in described rotor, is provided with two rollers；It is compared to the compacted of four rolling
Dynamic pump 91, the present embodiment is by reducing the roller of peristaltic pump 91 rotor, and the extruding of pair of rollers pump line is less, solves infusion process
The problem of middle generation bubble.
The operational approach of this titrator being applied to teaching is specific as follows:
Step 1. is started shooting, display reminding information on display screen 11, clicks on after determining, pump line safeguarded voluntarily by titrator；
Step 2. is calibrated, and clicks on the menu on display screen 11, after clicking on calibration button, carries out the calibration of titrator；
Step 3. carries out titration experiments；
After step 4. titration experiments completes, that clicks on display screen 11 completes button.
Specifically, above-mentioned step 3, first click on and menu is set on display screen 11, set titration parameters, shape according to prompting
Becoming built-in titration curve, during titration, display screen 11 shows titration curve in real time according to titration.
Further, titration parameters includes rate of titration, titrates direction, titrates the parameter such as color, titration volumes.
Above-mentioned only further illustrate technology contents of the present utility model with embodiment, in order to reader is easier to understand,
But not representing embodiment of the present utility model and be only limitted to this, any technology done according to this utility model extends or recreation,
All by protection of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (9)
1. being applied to the titrator of teaching, it is characterised in that include casing, described casing connects the wriggling being provided with transfusion power
Pump, is provided with cavity volume in described casing, be provided with the control system of the operation receiving instruction and control instrument, described control in described cavity volume
Being provided with titration curve in system processed, the upper end of described casing is provided with display operating process and the display screen of testing result, described machine
The side of shell is provided with height adjustable and removable support, and described wriggling delivery side of pump connects dismountable pump line, described
The upper end of pump line connects on the bracket, and described display screen and described peristaltic pump electrically connect with described control system respectively
Connect.
The most according to claim 1 be applied to teaching titrator, it is characterised in that described support include vertical bar and
Horizon bar, the lower end of described vertical bar is connected on the housing by fixing screw, the upper end of described vertical bar and described water
The inner ends thereof of flat bar connects, and the outer end of described horizon bar is vacant, and described pump line is connected to the outer end of described horizon bar.
The titrator being applied to teaching the most according to claim 2, it is characterised in that the lower end of described vertical bar is towards downward
Stretch, be plugged in the cavity volume of described casing, and the lower end connection of described vertical bar has hasp, described hasp and described fixing screw
Connect.
The titrator being applied to teaching the most according to claim 3, it is characterised in that the outer end of described horizon bar is provided with drips
Determining hole, the lower end in described titration hole connects the projection vertically arranged down, and the outer end of described pump line passes described titration hole, embedding
Enter in described projection.
5. according to described in any one of Claims 1-4 be applied to teaching titrator, it is characterised in that described in be applied to religion
The titrator learned also includes dismountable temperature probe, and the inner of described temperature probe connects on the housing, and outer end is vacant,
Described temperature probe is electrically connected with described control system.
6. according to the titrator being applied to teaching described in any one of Claims 1-4, it is characterised in that set in described casing
Being provided with the guidance panel at guest operation interface, described guidance panel is provided with several buttons.
7. according to the titrator being applied to teaching described in any one of Claims 1-4, it is characterised in that described display screen edge
Top-down direction is in tilted layout forward in the upper end of described casing.
The titrator being applied to teaching the most according to claim 5, it is characterised in that described control system includes providing electricity
The power supply of energy, governor circuit, display control circuit, peristaltic pump control circuit and storage circuit；It is provided with in described governor circuit
Described titration curve；Described power supply, described display control circuit, described peristaltic pump control circuit and described storage circuit are respectively
Being electrically connected with described governor circuit, described display screen is electrically connected with described display control circuit, and described peristaltic pump is with described
Peristaltic pump control circuit is electrically connected with, and described temperature probe is electrically connected with described governor circuit.
The titrator being applied to teaching the most according to claim 8, it is characterised in that described peristaltic pump control circuit includes
Circuit board, the supply voltage VBAT of input driving voltage, offer control the digital voltage DVDD of voltage, the control of input control signal
Signal STM_XX processed and motor interface J4, motor interface J4 for controlling rate of titration are connected with peristaltic pump, and power supply is electric
Pressure VBAT, digital voltage DVDD, control signal STM_XX and motor interface J4 are electrically connected with described circuit board respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620355805.2U CN205786524U (en) | 2016-04-25 | 2016-04-25 | It is applied to the titrator of teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620355805.2U CN205786524U (en) | 2016-04-25 | 2016-04-25 | It is applied to the titrator of teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786524U true CN205786524U (en) | 2016-12-07 |
Family
ID=57410984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620355805.2U Expired - Fee Related CN205786524U (en) | 2016-04-25 | 2016-04-25 | It is applied to the titrator of teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738562A (en) * | 2016-04-25 | 2016-07-06 | 深圳市清时捷科技有限公司 | Titrator applied to teaching and operating method thereof |
-
2016
- 2016-04-25 CN CN201620355805.2U patent/CN205786524U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738562A (en) * | 2016-04-25 | 2016-07-06 | 深圳市清时捷科技有限公司 | Titrator applied to teaching and operating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 |