CN208255165U - A kind of automatic buret - Google Patents
A kind of automatic buret Download PDFInfo
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- CN208255165U CN208255165U CN201820893107.7U CN201820893107U CN208255165U CN 208255165 U CN208255165 U CN 208255165U CN 201820893107 U CN201820893107 U CN 201820893107U CN 208255165 U CN208255165 U CN 208255165U
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- matrix
- control loop
- liquid
- automatic buret
- fluid guidance
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Abstract
The utility model relates to a kind of chemical analysis instruments, disclose a kind of automatic buret, including liquid storage bottle, dropper ontology, minim pipette, the liquid droping head being connect with minim pipette, control assembly is provided between the minim pipette and liquid droping head, the control assembly includes the control loop that matrix, the inlet being provided on matrix, the liquid outlet being provided on matrix, the rotation slot being provided on matrix and rotation slot are rotatablely connected and are arranged between inlet and liquid outlet；The different fluid guidance port of caliber size is offered in the control loop.By rotating control loop, keep fluid guidance port different in control loop corresponding with inlet, to achieve the effect that control flow.
Description
Technical field
The utility model relates to a kind of chemical analysis instruments, and in particular to a kind of automatic buret.
Background technique
Automatic buret is to be welded together in parallel by scale buret with liquid injection pipe.Wherein, a circle is formed in liquid injection pipe
Ball works as a buffer, and has the liquid outlet being bent up in measuring pipet upper end, adjusts zero point use, and outer layer has a ball
It is connected with liquid injection pipe, is flowed back in reservoir to collect surplus liquid, and by liquid injection pipe, the lower end of measuring pipet is welded with two
Branch pipe, protruding at triangle and inclined hole stop,threeway, dropping liquid mouth is connected, and a branch pipe above is by piston, dropping liquid
Mouth oozes the solution of buret, below branch pipe for titrating after, the extraction raffinate in buret, by piston through this
Pipe is flow back into reservoir, and measuring pipet and liquid injection pipe close up into a glass tube between two branch pipes, gos deep into the bottom of reservoir
Portion.There is an air inlet pipe on the top of frosted mouth, connect with bulbs,double, has an automatic floating fuse piston on the top of air inlet pipe,
Automatic piston can be automatically closed when inflation, can be deflated using automatic floating fuse piston when inflating excessive.
Such as the patent that notification number is CN206270310U, which disclose a kind of soda acid formula automatic burets, including storage
Liquid bottle and titration tube body, the titration tube body are passed through in the reservoir, and the titration tube body is equipped with titration mouth, described
It titrates and is equipped with piston switch at mouth, wherein be equipped with rubber stopper in the reservoir bottleneck, be equipped in the middle part of the rubber stopper described in supplying
The through-hole that titration tube body passes through, the titration tube body are connect by the rubber stopper with the reservoir；In addition, the work
Plug switch is teflon piston.
In actual use, buret is controlled out liquid by piston or do not go out liquid, existing buret only goes out liquid
With not go out liquid two states, lack the control to buret liquid outlet quantity.
Utility model content
It is of the existing technology lack the control to the liquid outlet quantity of buret aiming at the problem that, the purpose of this utility model exists
In providing a kind of automatic buret, have the effect of controlling the liquid outlet quantity of buret.
To achieve the above object, the utility model provides following technical solution:
A kind of automatic buret, including liquid storage bottle, dropper ontology, minim pipette, the liquid droping head being connect with minim pipette, the drop
Control assembly is provided between liquid pipe and liquid droping head, the control assembly includes matrix, the inlet being provided on matrix, opens up
Liquid outlet on matrix, the rotation slot being provided on matrix, with rotation slot rotation connection and be arranged in inlet and liquid outlet
Between control loop；The different fluid guidance port of caliber size is offered in the control loop.
By using above-mentioned technical proposal, the liquid in liquid storage bottle enters after minim pipette after dropper ontology from liquid droping head
It oozes.By rotating control loop, keep fluid guidance port different in control loop corresponding with inlet, to reach the effect of control flow
Fruit.
The utility model is further arranged to: there are three the fluid guidance port settings, and three fluid guidance ports are in T-shaped distribution.
By using above-mentioned technical proposal, there are three fluid guidance port settings, to realize three kinds of different flow controls.Work as control
Do not offered on system circle the part of fluid guidance port and inlet to it is corresponding when minim pipette and liquid droping head between be off-state.So four
Kind state is uniformly distributed, and the state of liquid droping head is adjusted convenient for user.
The utility model is further arranged to: the rotation groove sidewall is provided with fixed ball, is provided in described matrix
For pushing against the abutting circle of fixed ball.
By using above-mentioned technical proposal, the fixed ball of circle abutting is pushed against by making, so that fixed ball is made to push against control loop, from
And control loop is fixed, the stability of control loop is strong.
The utility model is further arranged to: the abutting circle is connect with matrix screw thread.
By using above-mentioned technical proposal, circle is pushed against by rotation, is pushed against to make to push against to enclose with fixed ball, adjustment side
Just.
The utility model is further arranged to: fixing groove corresponding with fluid guidance port is offered in the control loop.
It by using above-mentioned technical proposal, is embedded in fixing groove by the way that ball will be fixed, so that control loop be made to fix, reinforces control
Make the stability of circle.
The utility model is further arranged to: the circumferential direction of the rotation groove sidewall offers seal groove, the control loop
On be fixedly installed with seal groove cooperation sealing ring.
By using above-mentioned technical proposal, in sealing ring embedding sealing slot, and then strengthen between control loop rotation slot
Leakproofness reduces the probability that gap of the liquid between control loop and rotation slot leaks out.
The utility model is further arranged to: the seal groove is ladder type groove.
By using above-mentioned technical proposal, stepped seal groove and the cooperation of stepped sealing ring, tighten control circle with
Leakproofness between rotation slot.
The utility model is further arranged to: the seal groove is arranged between fluid guidance port and fixing groove.
By using above-mentioned technical proposal, seal groove is arranged between fluid guidance port and fixing groove, reduces liquid and fixed ball
With the probability of fixing groove contact.
The utility model has the advantage that
1, by rotation control loop, keep fluid guidance port different in control loop corresponding with inlet, to reach control flow
Effect.
2, the stability of control loop is strong.
3, the good airproof performance between control loop and rotation slot.
Detailed description of the invention
Fig. 1 is the overall structure figure of automatic buret；
Fig. 2 is the cross-sectional view of control assembly；
Fig. 3 is the structure chart of control loop.
Appended drawing reference: 1, liquid storage bottle；2, dropper ontology；3, minim pipette；4, liquid droping head；5, matrix；6, inlet；7, go out liquid
Mouthful；8, rotation slot；9, control loop；10, fluid guidance port；11, fixing groove；12, fixed ball；13, circle is pushed against；14, seal groove；15, close
Seal.
Specific embodiment
The utility model is described further referring to attached drawing.
A kind of automatic buret includes liquid storage bottle 1, dropper ontology 2, minim pipette 3, connect with minim pipette 3 as shown in Figure 1:
Liquid droping head 4, be provided with control assembly between minim pipette 3 and liquid droping head 4.Liquid in liquid storage bottle 1 is laggard by dropper ontology 2
It is oozed after entering minim pipette 3 from liquid droping head 4.Liquid outlet quantity is controlled by control assembly.
As shown in Figures 2 and 3: control assembly includes matrix 5, the inlet being provided on matrix 56, is provided on matrix 5
Liquid outlet 7, the rotation slot 8 being provided on matrix 5, the control loop 9 being rotatablely connected with rotation slot 8.Inlet 6 and minim pipette 3 connect
It connects.Liquid outlet 7 is connect with liquid droping head 4.
Control loop 9 is arranged between inlet 6 and liquid outlet 7.Caliber size is different there are three opening up in control loop 9 leads
Liquid mouth 10.Three fluid guidance ports 10 are in T-shaped distribution.By rotating control loop 9, make fluid guidance port 10 different in control loop 9 with into
Liquid mouth 6 is corresponding, to achieve the effect that control flow.When the part and inlet 6 that do not offer fluid guidance port 10 in control loop 9 are right
It at once, is off-state between minim pipette 3 and liquid droping head 4.
Control loop 9 is circumferential to open up that there are four fixing grooves 11 corresponding with fluid guidance port 10.8 side wall of rotation slot setting there are four with
Four fixing grooves 11 corresponding fixed ball 12 is threaded with abutting circle 13 on matrix 5.Circle 13 is pushed against for pushing against fixed ball
12.It is pushed against by rotation and encloses 13, abutting circle 13 is made to push against fixed ball 12, fixed in the insertion fixing groove 11 of ball 12, to make to control
Circle 9 is fixed.
The circumferential direction of 8 side wall of rotation slot offers seal groove 14, and seal groove 14 is ladder type groove.Seal groove 14 is arranged in drain
Between mouth 10 and fixing groove 11.The sealing ring 15 cooperated with seal groove 14 is fixedly installed in control loop 9, sealing ring 15 is ladder
Type.The logical cooperation by sealing ring 15 and seal groove 14, strengthens the leakproofness between control loop 9 and rotation slot 8.
Working principle: pushing against circle 13 by rotation, separates abutting circle 13 with fixed ball 12, rotates control loop 9, pass through tune
Different fluid guidance ports 10 is corresponding with inlet 6 in whole control loop 9, thus to inlet 6 enter liquid outlet 7 liquid flow into
Row control.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of automatic buret, including liquid storage bottle (1), dropper ontology (2), minim pipette (3), the drop being connect with minim pipette (3)
Liquid head (4), it is characterized in that: being provided with control assembly between the minim pipette (3) and liquid droping head (4), the control assembly includes
Matrix (5), the liquid outlet (7) being provided on matrix (5), is provided on matrix (5) inlet (6) being provided on matrix (5)
Rotation slot (8) and rotation slot (8) rotation connection and control loop (9) between inlet (6) and liquid outlet (7) is set；Institute
It states and offers the different fluid guidance port of caliber size (10) on control loop (9).
2. a kind of automatic buret according to claim 1, it is characterized in that: there are three the fluid guidance port (10) settings, three
A fluid guidance port (10) is in T-shaped distribution.
3. a kind of automatic buret according to claim 1, it is characterized in that: the rotation slot (8) side wall is provided with fixation
Ball (12) is provided with the abutting circle (13) for pushing against fixed ball (12) in described matrix (5).
4. a kind of automatic buret according to claim 3, it is characterized in that: abutting circle (13) and matrix (5) screw thread
Connection.
5. a kind of automatic buret according to claim 4, it is characterized in that: being offered in the control loop (9) and drain
The corresponding fixing groove (11) of mouth (10).
6. a kind of automatic buret according to claim 5, it is characterized in that: the circumferential direction of the rotation slot (8) side wall opens up
Have seal groove (14), the sealing ring (15) with seal groove (14) cooperation is fixedly installed on the control loop (9).
7. a kind of automatic buret according to claim 6, it is characterized in that: the seal groove (14) is ladder type groove.
8. a kind of automatic buret according to claim 7, it is characterized in that: the seal groove (14) is arranged in fluid guidance port
(10) between fixing groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820893107.7U CN208255165U (en) | 2018-06-09 | 2018-06-09 | A kind of automatic buret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820893107.7U CN208255165U (en) | 2018-06-09 | 2018-06-09 | A kind of automatic buret |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208255165U true CN208255165U (en) | 2018-12-18 |
Family
ID=64654192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820893107.7U Active CN208255165U (en) | 2018-06-09 | 2018-06-09 | A kind of automatic buret |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208255165U (en) |
-
2018
- 2018-06-09 CN CN201820893107.7U patent/CN208255165U/en active Active
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