CN110694705A - Liquid feeding and taking device convenient for U-shaped porous glass plate absorption tube - Google Patents
Liquid feeding and taking device convenient for U-shaped porous glass plate absorption tube Download PDFInfo
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- CN110694705A CN110694705A CN201910974259.9A CN201910974259A CN110694705A CN 110694705 A CN110694705 A CN 110694705A CN 201910974259 A CN201910974259 A CN 201910974259A CN 110694705 A CN110694705 A CN 110694705A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0289—Apparatus for withdrawing or distributing predetermined quantities of fluid
- B01L3/0293—Apparatus for withdrawing or distributing predetermined quantities of fluid for liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/54—Supports specially adapted for pipettes and burettes
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention relates to a liquid adding and taking device convenient for a U-shaped porous glass plate absorption tube, wherein a liquid adding adjusting and fixing device, a liquid adding device, a liquid taking adjusting and fixing device and a liquid taking device are arranged on a workbench; the liquid adding adjusting and fixing device comprises a bracket arranged on a workbench, a rotating shaft is arranged on the bracket through a bearing, the outer side end of the bracket is connected with a crank, a moving gear is arranged on the inner side of the bracket and is connected with a transmission gear through meshing, and the transmission gear is fixed on the bracket through a support rod; the liquid feeding amount and the completeness of liquid taking can be conveniently controlled, the accuracy of the liquid feeding amount can be guaranteed, the completeness of the liquid taking amount can be guaranteed, repeated operation for multiple times is avoided, the problem that liquid taking is not complete and causes low precision of a measuring result is avoided, the accuracy and the accuracy of the measuring result are greatly improved while manpower and material resources are saved, the working difficulty is reduced, and the working efficiency is improved.
Description
The technical field is as follows:
the invention relates to a liquid adding and taking device convenient for a U-shaped porous glass plate absorption tube.
Background art:
at present, the U-shaped porous glass plate absorption tube is widely used in gas sampling because of high absorption efficiency. When different gas samples are collected, corresponding absorption liquid needs to be added into the U-shaped porous glass plate absorption tube, and the gas sampling has accurate requirements on the volume of the absorption liquid. The special design of the U-shaped porous glass plate absorption tube meets the requirement of gas sampling, but the shape of the U-shaped porous glass plate absorption tube is not beneficial to operations such as liquid adding, liquid taking and the like. A single person directly adds liquid to the straight tube part of the U-shaped porous glass plate absorption tube by using the liquid adding tube, so that absorption liquid overflows from the joint part of the liquid adding tube and the U-shaped porous glass plate absorption tube, the absorption liquid is wasted, and the U-shaped porous glass plate absorption tube also needs to be washed or dried again. The self-filling device can be operated by one person, but the burette and other auxiliary pipelines are troublesome to clean and dry, and are easy to break due to the fact that the self-filling device is made of glass products and is special in shape and not portable on site. At present, a laboratory generally adopts a double-person operation method, one person uses a liquid adding pipe to add liquid, and the other person uses an ear sucking ball to simultaneously suck air from the other ー side of an absorption tube.
In addition, the liquid is very troublesome to take out from the absorption tube after sampling is finished, and in order to ensure that the experimental result is accurate and reliable, the sample can not be polluted and the absorption liquid can be completely taken out. What use commonly in the laboratory at present is that the absorption liquid after slowly blowing the sampling is blown the colour comparison tube with the auricle ball, and not only waste time and energy, easily cause the absorption liquid splash, still be difficult to the whole transfer of absorption liquid to influence subsequent result analysis, lead to the degree of accuracy of whole test result not high.
In conclusion, the existing U-shaped porous glass plate absorption tube is inconvenient to operate by a single person, and liquid overflows from the joint part of the liquid feeding tube and the U-shaped porous glass plate absorption tube when liquid is fed, so that absorption liquid is wasted, and the U-shaped porous glass plate absorption tube also needs to be washed or dried again; the double operation needs to be matched with skillfulness and needs to be done again by carelessness; in addition, even if liquid is taken after sampling is successful, the difficulty is high, the phenomenon that the accuracy of a test result is not high due to incomplete liquid taking can be caused, the working difficulty is greatly increased, and the working efficiency is reduced.
The invention content is as follows:
in order to make up the defects of the prior art, the invention provides the liquid feeding and taking device which is convenient for the U-shaped porous glass plate absorption tube 26, so that the waste of manpower due to the cooperation of a plurality of people is avoided; moreover, the liquid adding amount and the completeness of liquid taking can be conveniently controlled in the operation process, the accuracy of the liquid adding amount and the completeness of the liquid taking amount can be guaranteed, the accuracy of a measuring result is greatly improved while manpower and material resources are saved, the working difficulty is reduced, the working efficiency is improved, the problem that the accuracy of the measuring result is not high due to the fact that the liquid adding amount is difficult to control, repeated operation is needed for many times and liquid taking is incomplete is effectively avoided, and the problems existing in the prior art are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a liquid adding and taking device convenient for a U-shaped porous glass plate absorption tube comprises a workbench, wherein a liquid adding adjusting and fixing device, a liquid adding device, a liquid taking adjusting and fixing device and a liquid taking device are arranged on the workbench;
the liquid adding adjusting and fixing device comprises a bracket arranged on a workbench, a rotating shaft is arranged on the bracket through a bearing, the outer side end of the bracket is connected with a crank, a moving gear is arranged on the inner side of the bracket and is connected with a transmission gear through meshing, the transmission gear is fixed on the bracket through a support rod, the support rod is also provided with a driven gear which is meshed and connected with a rack belt on a toothed column, the rack belt drives the toothed column to reciprocate up and down by meshing with the driven gear, the bottom end of the toothed column is connected with a fixed sleeve fixed on the workbench by a vertical telescopic rod, the top end of the toothed column is connected with a fixed plate, a plurality of through holes are horizontally arranged on the fixed plate at intervals, an adjusting plate is fixed on the fixed plate through bolts and a plurality of round holes which are arranged on the adjusting plate and are matched with the through holes, and threaded holes which are matched with a funnel on the liquid adding device are vertically arranged on the adjusting plate;
the liquid adding device comprises a funnel fixed on an adjusting plate, the funnel is fixed on a threaded hole through an external thread arranged on the outer side of the funnel, a liquid storage bottle is inverted above the funnel, the bottom end of the funnel is connected with a graduated tube through an adjusting valve, the lower part of the graduated tube is connected with a hose through a switch valve, and the bottom end of the hose is connected with a liquid adding opening of an absorbing tube of the U-shaped porous glass plate;
the liquid taking adjusting and fixing device comprises a fixing rod vertically arranged on a workbench, a rotatable telescopic supporting rod consisting of a horizontal telescopic rod, a telescopic sleeve, a rotary knob, a telescopic knob and an elastic clamp is arranged on the fixing rod, the rotary knob is positioned in the middle of the rotatable telescopic supporting rod and used for controlling the rotation of the rotatable telescopic supporting rod, the telescopic knob is positioned at the outer end part of the rotatable telescopic supporting rod and used for controlling the stretching of the rotatable telescopic supporting rod, and the elastic clamp is positioned at the inner end part of the rotatable telescopic supporting rod and used for clamping a U-shaped porous glass plate absorption tube;
the liquid taking device comprises an extension sleeve and an extension rod which are rotatably arranged on a fixed rod, the extension of the extension rod is adjusted and fixed through an adjusting bolt arranged on the extension sleeve, and a mounting hole matched with the colorimetric tube is formed in the extension rod of the extension sleeve.
The elastic clamp consists of an inner arc-shaped plate and an outer arc-shaped plate, the middle part of the outer side of the outer arc-shaped plate is connected with the end part of the inner end of the rotatable telescopic supporting rod, the middle part of the inner side of the outer arc-shaped plate is connected with a convex column on the middle part of the outer side of the inner arc-shaped plate, the outer side of the inner arc-shaped plate close to the end parts of the two ends is respectively provided with an outer arc-shaped groove, the inner side of the outer arc-shaped plate and the position opposite to the two outer arc-shaped grooves are respectively provided with an inner arc-shaped groove matched with the outer arc-shaped groove, the inner arc-shaped groove and the outer arc-shaped groove opposite to the two positions are respectively provided with a spring, the two ends of the spring are respectively fixed on the inner arc-shaped groove and the outer arc-shaped groove opposite to the positions, each spring is externally sleeved with a telescopic limiting rod, the inner side walls at the end parts of, the middle part of the outer side wall of the elastic bandage is provided with a pull ring.
The middle part of the inner side of the inner arc-shaped plate is connected with one end of an elastic clapboard.
Arc-shaped pads are arranged in the two open grooves.
The liquid feeding adjusting and fixing device further comprises a limiting rod arranged on the support, and a through hole for the rack to pass through is formed in the limiting rod.
The two limiting rods are respectively arranged on the brackets at the upper side and the lower side of the rocker.
The inner side of the funnel is provided with an annular bracket, and the center of the annular bracket is provided with a bulge.
The annular bracket is composed of three support rods, one end of each support rod is fixed on the inner side wall of the funnel respectively, and the other end of each support rod is connected with the convex column respectively.
The opening of the liquid storage bottle is provided with a thin film sealing piece.
The thin film sealing sheet is an elastic thin film sealing sheet, and more than two indentations are arranged on the elastic thin film sealing sheet at intervals along the circumferential direction.
By adopting the scheme, the automatic liquid feeding device is reasonable in structural design, and can be conveniently operated by a single person through the power device, the liquid feeding device and the liquid taking device which are arranged on the workbench, so that the waste of manpower due to the cooperation of multiple persons is avoided; moreover, the liquid adding amount and the liquid taking completeness can be conveniently controlled in the operation process, the accuracy of the liquid adding amount can be guaranteed, the completeness of the liquid taking amount can be guaranteed, repeated operation for multiple times due to the fact that the liquid adding amount is not easy to control is avoided, the problem that the accuracy of a measuring result is not high due to the fact that liquid is not taken completely is avoided, the accuracy and the accuracy of the measuring result are greatly improved while manpower and material resources are saved, the working difficulty is reduced, and the working efficiency is improved.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the enlarged top view of the liquid storage bottle of the present invention.
Fig. 3 is a schematic view of the enlarged structure of the filling funnel in the top view.
Fig. 4 is an enlarged schematic view of the elastic clip of the present invention.
In the figure, 1, a workbench, 2, a bracket, 3, a crank, 4, a moving gear, 5, a transmission gear, 6, a support rod, 7, a driven gear, 8, a toothed column, 9, a rack belt, 10, a vertical telescopic rod, 11, a fixed sleeve, 12, a fixed plate, 13, an adjusting plate, 14, a bolt, 15, a funnel, 16, a liquid storage bottle, 17, an adjusting valve, 18, a graduated tube, 19, a switch valve, 20, a hose, 21, a fixed rod, 22, a horizontal telescopic rod, 23, a telescopic sleeve, 24, a rotary knob, 25, a telescopic knob, 26, a U-shaped porous plate absorption tube, 27, an extension sleeve, 28, an extension rod, 29, an inner arc plate, 30, an outer arc plate, 31, a convex column, 32, an outer arc groove, 33, an inner arc groove, 34, a spring, 35, a telescopic limiting rod, 36, an open groove, 37, an elastic bandage, 38, a pull ring, 39, an elastic partition plate, 40 and an arc cushion, 41. a limiting rod 42, an annular bracket 43, a bulge 44, a thin film sealing sheet 45 and an indentation.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1-4, comprises a workbench 1, and a liquid feeding adjusting and fixing device, a liquid feeding device, a liquid taking adjusting and fixing device and a liquid taking device are arranged on the workbench 1;
the liquid adding adjusting and fixing device comprises a bracket 2 arranged on a workbench 1, a rotating shaft is arranged on the bracket 2 through a bearing, the outer side end of the bracket 2 is connected with a crank 3, the inner side of the bracket 2 is provided with a moving gear 4, the moving gear 4 is connected with a driving gear 5 through meshing, the driving gear 5 is fixed on the bracket 2 through a support rod 6, the support rod 6 is also provided with a driven gear 7, the driven gear 7 is meshed and connected with a rack belt 9 on a rack 8, the rack belt 9 drives the rack 8 to reciprocate up and down through meshing with the driven gear 7, the bottom end of the rack 8 is connected with a fixed sleeve 11 fixed on the workbench 1 through a vertical telescopic rod 10, the top end of the rack 8 is connected with a fixed plate 12, a plurality of through holes are horizontally arranged on the fixed plate 12 at intervals, an adjusting plate 13 is fixed on the fixed plate 12 through bolts 14 and a plurality of round holes matched with the through holes, a threaded hole matched with a funnel 15 on the liquid adding device is vertically arranged on the adjusting plate 13;
the liquid adding device comprises a funnel 15 fixed on an adjusting plate 13, the funnel 15 is fixed on a threaded hole through an external thread arranged on the outer side of the funnel, a liquid storage bottle 16 is arranged upside down above the funnel 15, the bottom end of the funnel 15 is connected with a graduated tube 18 through an adjusting valve 17, the lower part of the graduated tube 18 is connected with a hose 20 through a switch valve 19, and the bottom end of the hose 20 is connected with a liquid adding opening of a U-shaped porous glass plate absorption tube 26;
the liquid taking adjusting and fixing device comprises a fixing rod 21 vertically arranged on a workbench 1, a rotatable telescopic supporting rod consisting of a horizontal telescopic rod 22, a telescopic sleeve 23, a rotary knob 24, a telescopic knob 25 and an elastic clamp is arranged on the fixing rod 21, the rotary knob 24 is positioned in the middle of the rotatable telescopic supporting rod and is used for controlling the rotation of the rotatable telescopic supporting rod, the telescopic knob 25 is positioned at the outer end part of the rotatable telescopic supporting rod and is used for controlling the stretching of the rotatable telescopic supporting rod, and the elastic clamp is positioned at the inner end part of the rotatable telescopic supporting rod and is used for clamping a U-shaped porous glass plate absorption tube 26;
the liquid taking device comprises an extension sleeve 27 and an extension rod 28 which are rotatably arranged on a fixed rod 21, the extension of the extension rod 28 is adjusted and fixed through an adjusting bolt 14 arranged on the extension rod, and a mounting hole matched with the colorimetric tube is formed in the extension rod 28 of the extension sleeve 27.
The elastic clamp comprises an inner arc plate 29 and an outer arc plate 30, the middle part of the outer side of the outer arc plate 30 is connected with the inner end part of the rotatable telescopic supporting rod, the middle part of the inner side of the outer arc plate 30 is connected with a convex column 31 on the middle part of the outer side of the inner arc plate 29, an outer arc groove 32 is respectively arranged at the position, close to the end parts of the two ends, of the outer side of the inner arc plate 29, an inner arc groove 33 matched with the outer arc groove 32 is respectively arranged at the position, opposite to the two outer arc grooves 32, of the inner side of the outer arc plate 30, a spring 34 is respectively arranged on the inner arc groove 33 and the outer arc groove 32 which are opposite to each other, the two ends of the spring 34 are respectively fixed on the inner arc groove 33 and the outer arc groove 32 which are opposite to each other, a telescopic limiting rod 35 is sleeved outside each spring 34, an open groove 36 is respectively arranged on the inner side wall of the end part of the two end parts of the inner arc plate 29, and two ends of an elastic bandage 37 are On the wall, a pull ring 38 is provided in the middle of the outer side wall of the elastic strap 37.
The middle part of the inner side of the inner arc-shaped plate 29 is connected with one end of an elastic partition plate 39, and the elastic partition plate 39 can separate two sections of tubes of the U-shaped porous glass plate absorption tube 26, so that the phenomenon that when the U-shaped porous glass plate absorption tube 26 is clamped elastically, the tubes at two ends are damaged due to larger extrusion force between the tubes at two ends because the tubes at two ends are only clamped is avoided.
The arc-shaped pads 40 are arranged in the two open grooves 36, and the arc-shaped pads 40 arranged in the two open grooves 36 are used for buffering the pressure which is applied to the hands of an operator by the inner arc-shaped plate 29, so that the fingers of the operator are not pressed when the operator operates the device.
The liquid adding adjusting and fixing device also comprises a limiting rod 41 arranged on the bracket 2, and a through hole for the rack to pass through is arranged on the limiting rod 41; the two limiting rods 41 are respectively arranged on the brackets 2 at the upper side and the lower side of the rocker; the two limiting rods 41 arranged up and down can enable the toothed column 8 to vertically move up and down, and are used for avoiding dislocation when the toothed column 8 moves up and down under the action of the rack belt 9.
An annular bracket 42 is arranged on the inner side of the funnel 15, and a bulge 43 is arranged in the center of the annular bracket 42; the annular bracket 42 consists of three support rods, one end of each support rod is respectively fixed on the inner side wall of the funnel 15, and the other end of each support rod is respectively connected with the convex column 31; the protrusion provided on the ring-shaped bracket 42 may be used to pierce the thin-film sealing sheet 44 on the liquid storage bottle 16, so that the liquid in the liquid storage bottle 16 flows into the funnel 15.
A thin film sealing sheet 44 is arranged at the opening of the liquid storage bottle 16; the thin film sealing sheet 44 is an elastic thin film sealing sheet 44, and more than two indentations 45 are arranged on the elastic thin film sealing sheet at intervals along the circumferential direction; when the liquid storage bottle 16 is placed in the funnel 15, the liquid in the liquid storage bottle 16 can be splashed in the process of instant inversion, and the elastic film sealing sheet 44 and the indentation 45 thereof can facilitate the bulge 43 on the funnel 15 to be easier to puncture.
When in use, liquid is added according to the requirement, and the liquid adding device is adjusted to a proper position in advance; the vertical direction is as follows: when the lifting mechanism is lifted, the crank 3 is shaken clockwise, the crank 3 drives the moving gear 4 on the rotating shaft to rotate clockwise, the moving gear 4 drives the transmission gear 5 meshed with the moving gear to rotate clockwise, the transmission gear 5 drives the driven gear 7 connected with the transmission gear to rotate clockwise, the driven gear 7 drives the rack belt 9 meshed with the driven gear to move upwards, the rack belt 9 drives the tooth post 8 to move upwards along the range limited by the two limiting rods 41, the vertical telescopic rod 10 positioned on the fixed sleeve 11 moves upwards under the driving of the tooth post 8 and is pulled out from the fixed sleeve 11, and the lifting mechanism stops shaking after the lifting mechanism is lifted to a proper height; when the lifting mechanism is adjusted downwards, the crank 3 is shaken anticlockwise, the crank 3 drives the moving gear 4 on the rotating shaft to rotate anticlockwise, the moving gear 4 drives the transmission gear 5 meshed with the moving gear to rotate anticlockwise, the transmission gear 5 drives the driven gear 7 connected with the transmission gear to rotate anticlockwise, the driven gear 7 drives the rack belt 9 meshed with the driven gear to move downwards, the rack belt 9 drives the toothed column 8 to move downwards along the range limited by the two limiting rods 41, the vertical telescopic rod 10 positioned on the fixed sleeve 11 moves downwards under the driving of the toothed column 8 and is contracted into the fixed sleeve 11, and the lifting mechanism stops shaking after the lifting mechanism is lowered to a proper height; horizontal direction: during left adjustment, after the adjusting plate 13 is moved inward to a proper position along the fixing plate 12, the bolt 14 is sequentially inserted through the adjusting plate 13 and the fixing plate 12 to fix the adjusting plate 13 on the fixing plate 12; in the right-hand adjustment, after the adjustment plate 13 is moved outward to a proper position along the fixing plate 12, the bolt 14 is inserted through the adjustment plate 13 and the fixing plate 12 in order to fix the adjustment plate 13 to the fixing plate 12.
When liquid is added, when the liquid adding adjusting and fixing device is adjusted to a proper position, the switch valve 19 and the adjusting valve 17 are closed, then the bottle cap of the liquid storage bottle 16 is removed to expose the thin sealing sheet 44, the liquid storage bottle 16 is inverted on the funnel 15, the convex column 31 arranged on the annular bracket 42 of the funnel 15 punctures the thin sealing sheet 44 on the liquid storage bottle 16, the liquid in the liquid storage bottle 16 flows into the funnel 15, then the adjusting valve 17 is opened slowly to enable the liquid in the funnel 15 to flow into the scale tube 18 slowly, when the liquid in the scale tube 18 reaches a required amount, the adjusting valve 17 is closed, then the switch valve 19 is opened, the liquid in the scale tube 18 flows into the U-shaped porous glass plate absorption tube 26 fixed on the elastic clamp through the hose 20, in order to facilitate the liquid in the scale tube 18 to flow into the U-shaped porous glass plate absorption tube 26 through the hose 20 smoothly, the angle of the U-shaped porous glass plate absorption tube 26 can be adjusted properly, the liquid in the graduated tube 18 is totally flowed into the U-shaped porous glass plate absorption tube 26 through the hose 20, and the on-off valve 19 is closed.
When liquid is taken out, the position of the extension rod 28 is adjusted in the extension sleeve 27 by rotating the adjusting bolt 14, then the adjusting bolt 14 is screwed to fix the extension rod 28 in the extension sleeve 27, and then the colorimetric tube is placed in the mounting hole on the extension rod 28. Adjusting the horizontal position and the vertical position of the rotatable telescopic supporting rod according to the position of the colorimetric tube, adjusting by adjusting a telescopic knob 25 when adjusting the vertical position, loosening the telescopic knob 25, moving a telescopic sleeve 23 up and down along a fixed rod 21 to a proper position, screwing the telescopic knob 25, loosening a rotary knob 24, drawing the position of the horizontal telescopic rod 22 in the telescopic sleeve 23 left and right, and screwing the rotary knob 24 after adjusting; then, the rotary knob 24 is slowly loosened to make the horizontal telescopic rod 22 rotate in the telescopic sleeve 23, and then the horizontal telescopic rod 22 is slowly rotated outwards to make the U-shaped porous glass plate absorption tube 26 tilt outwards to a proper angle and then the rotary knob 24 is screwed, at this time, the elastic clamp can be adjusted to make the liquid outlet of the U-shaped porous glass plate absorption tube 26 place outwards, during adjustment, the liquid outlet of the U-shaped porous glass plate absorption tube 26 is placed outwards and placed in the outer cavity of the two cavities formed by the elastic partition plate 39 and the inner arc-shaped plate 29, then the position of the extension sleeve 27 is adjusted by rotating along the circumferential direction of the fixing rod 21 to make the U-shaped porous glass plate absorption tube 26 on the rotatable telescopic supporting rod stagger a certain angle in the vertical direction and not on a vertical plane, so that the liquid outlet of the U-shaped porous glass plate absorption tube 26 is more easily aligned with the liquid inlet of the colorimetric tube, in order to avoid that the liquid in the U-shaped porous glass plate absorption tube 26 flows out before being aligned with the liquid inlet of the colorimetric tube in the process of adjusting the position of the U-shaped porous glass plate absorption tube 26, the liquid outlet and the liquid inlet of the U-shaped porous glass plate absorption tube 26 can be respectively sealed by a sealing film in advance, or the liquid inlet of the U-shaped porous glass plate absorption tube 26 is sealed by a sealing cover, the liquid outlet of the U-shaped porous glass plate absorption tube 26 is sealed by a sealing film, when the liquid outlet of the U-shaped porous glass plate absorption tube 26 is aligned with the liquid inlet of the colorimetric tube, the sealing film is pulled off, the liquid in the U-shaped porous glass plate absorption tube 26 can smoothly flow into the colorimetric tube, and the problem that the liquid in the colorimetric tube flows out in advance to cause the deficiency of the colorimetric liquid amount flowing into the colorimetric tube before the liquid outlet of the U-shaped porous glass plate absorption tube 26 is aligned with the liquid inlet of the colorimetric, the measurement results are inaccurate. When the liquid in the U-shaped porous glass plate absorption tube 26 flows into the colorimetric tube, the pull ring 38 can be pulled outwards to release after a certain distance, the pull ring 38 drives the elastic bandage 37 to move outwards and then lightly flicks on the U-shaped porous glass plate absorption tube 26 under the elastic force of the elastic bandage 37, so that the liquid in the U-shaped porous glass plate absorption tube 26 is accelerated and completely flows into the colorimetric tube, and the problem that the liquid adhered to the tube wall in the U-shaped porous glass plate absorption tube 26 cannot completely flow into the colorimetric tube to influence the accuracy and precision of later data measurement and analysis is avoided.
The invention can conveniently adjust according to the position requirements of the liquid adding device in the horizontal direction and the vertical direction through the liquid adding adjusting and fixing device arranged on the worktable 1, can adjust the liquid adding device to the required position in the horizontal direction and the vertical direction, can conveniently measure the liquid amount flowing into the colorimetric tube twice as required in the liquid adding process, namely when the liquid storage tube flows into the graduated tube 18, the amount flowing into the graduated tube 18 can be controlled through the adjusting valve 17 as required to achieve the purpose of first measurement, if the amount flowing into the graduated tube 18 is more than the required liquid amount carelessly at the moment, the hose 20 can be connected into other measuring instruments to discharge the redundant liquid amount, and the amount flowing into the hose 20 can be controlled through the switch valve 19 to remain the redundant liquid amount in the graduated tube 18, so as to achieve the purpose of second measurement, the two-time measurement not only greatly improves the accuracy and precision of the measurement, but also can be completed by one-man operation, and can avoid repeated work caused by that liquid which is taken from the liquid storage bottle 16 is directly added into the U-shaped porous glass plate absorption tube 26 to cause liquid adding failure and the U-shaped porous glass plate absorption tube 26 needs to be cleaned and dried again, which wastes time, material and labor; in addition, it is also very convenient when getting liquid from the absorption tube after the sampling, for guaranteeing that the experimental result is accurate reliable, can be convenient take out the colorimetric tube to the whole liquid in the porous glass board absorption tube of U type 26 through getting liquid regulation fixing device and getting the liquid device that set up, when getting liquid promptly, can be through getting liquid regulation fixing device who sets up, make the liquid mouth of getting of porous glass board absorption tube of U type 26 invert slowly at the inlet port department of colorimetric tube, can also drive elastic bandage 37 vibrations porous glass board absorption tube of U type 26 through pulling to pull ring 38, make its intraductal liquid all take out in the colorimetric tube, avoid liquid to take out and incompletely bond on the pipe wall of porous glass board absorption tube of U type 26 and lead to the measuring result inaccurate, and can avoid polluting the sample and can also guarantee that the absorption liquid is all taken out.
In conclusion, the U-shaped porous glass plate absorption tube 26 of the present invention can avoid the inconvenience of a single person in operation and the waste of absorption liquid caused by the overflow of liquid from the connection part of the liquid feeding tube and the U-shaped porous glass plate absorption tube 26 during liquid feeding.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (10)
1. The utility model provides a liquid feeding and liquid taking device convenient to porous glass board absorbed tube of U type which characterized in that: comprises a workbench, and a liquid feeding adjusting and fixing device, a liquid feeding device, a liquid taking adjusting and fixing device and a liquid taking device are arranged on the workbench;
the liquid adding adjusting and fixing device comprises a bracket arranged on a workbench, a rotating shaft is arranged on the bracket through a bearing, the outer side end of the bracket is connected with a crank, a moving gear is arranged on the inner side of the bracket and is connected with a transmission gear through meshing, the transmission gear is fixed on the bracket through a support rod, the support rod is also provided with a driven gear which is meshed and connected with a rack belt on a toothed column, the rack belt drives the toothed column to reciprocate up and down by meshing with the driven gear, the bottom end of the toothed column is connected with a fixed sleeve fixed on the workbench by a vertical telescopic rod, the top end of the toothed column is connected with a fixed plate, a plurality of through holes are horizontally arranged on the fixed plate at intervals, an adjusting plate is fixed on the fixed plate through bolts and a plurality of round holes which are arranged on the adjusting plate and are matched with the through holes, and threaded holes which are matched with a funnel on the liquid adding device are vertically arranged on the adjusting plate;
the liquid adding device comprises a funnel fixed on an adjusting plate, the funnel is fixed on a threaded hole through an external thread arranged on the outer side of the funnel, a liquid storage bottle is inverted above the funnel, the bottom end of the funnel is connected with a graduated tube through an adjusting valve, the lower part of the graduated tube is connected with a hose through a switch valve, and the bottom end of the hose is connected with a liquid adding opening of an absorbing tube of the U-shaped porous glass plate;
the liquid taking adjusting and fixing device comprises a fixing rod vertically arranged on a workbench, a rotatable telescopic supporting rod consisting of a horizontal telescopic rod, a telescopic sleeve, a rotary knob, a telescopic knob and an elastic clamp is arranged on the fixing rod, the rotary knob is positioned in the middle of the rotatable telescopic supporting rod and used for controlling the rotation of the rotatable telescopic supporting rod, the telescopic knob is positioned at the outer end part of the rotatable telescopic supporting rod and used for controlling the stretching of the rotatable telescopic supporting rod, and the elastic clamp is positioned at the inner end part of the rotatable telescopic supporting rod and used for clamping a U-shaped porous glass plate absorption tube;
the liquid taking device comprises an extension sleeve and an extension rod which are rotatably arranged on a fixed rod, the extension of the extension rod is adjusted and fixed through an adjusting bolt arranged on the extension sleeve, and a mounting hole matched with the colorimetric tube is formed in the extension rod of the extension sleeve.
2. The liquid adding and taking device for the U-shaped porous glass plate absorption tube of claim 1, which is characterized in that: the elastic clamp consists of an inner arc-shaped plate and an outer arc-shaped plate, the middle part of the outer side of the outer arc-shaped plate is connected with the end part of the inner end of the rotatable telescopic supporting rod, the middle part of the inner side of the outer arc-shaped plate is connected with a convex column on the middle part of the outer side of the inner arc-shaped plate, the outer side of the inner arc-shaped plate close to the end parts of the two ends is respectively provided with an outer arc-shaped groove, the inner side of the outer arc-shaped plate and the position opposite to the two outer arc-shaped grooves are respectively provided with an inner arc-shaped groove matched with the outer arc-shaped groove, the inner arc-shaped groove and the outer arc-shaped groove opposite to the two positions are respectively provided with a spring, the two ends of the spring are respectively fixed on the inner arc-shaped groove and the outer arc-shaped groove opposite to the positions, each spring is externally sleeved with a telescopic limiting rod, the inner side walls at the end parts of, the middle part of the outer side wall of the elastic bandage is provided with a pull ring.
3. The liquid adding and taking device for the U-shaped porous glass plate absorption tube as claimed in claim 2, wherein: the middle part of the inner side of the inner arc-shaped plate is connected with one end of an elastic clapboard.
4. The liquid adding and taking device for the U-shaped porous glass plate absorption tube as claimed in claim 2, wherein: arc-shaped pads are arranged in the two open grooves.
5. The liquid adding and taking device for the U-shaped porous glass plate absorption tube of claim 1, which is characterized in that: the liquid feeding adjusting and fixing device further comprises a limiting rod arranged on the support, and a through hole for the rack to pass through is formed in the limiting rod.
6. The liquid adding and taking device for the U-shaped porous glass plate absorption tube of claim 5, which is characterized in that: the two limiting rods are respectively arranged on the brackets at the upper side and the lower side of the rocker.
7. The liquid adding and taking device for the U-shaped porous glass plate absorption tube of claim 1, which is characterized in that: the inner side of the funnel is provided with an annular bracket, and the center of the annular bracket is provided with a bulge.
8. The apparatus of claim 7, wherein the apparatus is adapted to facilitate the filling and removal of liquid from the absorbent tube of a U-shaped multi-well glass panel, and further comprises: the annular bracket is composed of three support rods, one end of each support rod is fixed on the inner side wall of the funnel respectively, and the other end of each support rod is connected with the convex column respectively.
9. The liquid adding and taking device for the U-shaped porous glass plate absorption tube of claim 1, which is characterized in that: the opening of the liquid storage bottle is provided with a thin film sealing piece.
10. The apparatus of claim 9, wherein the apparatus is adapted to facilitate the filling and removal of liquid from the absorbent tube of a U-shaped multi-well glass panel, and further comprises: the thin film sealing sheet is an elastic thin film sealing sheet, and more than two indentations are arranged on the elastic thin film sealing sheet at intervals along the circumferential direction.
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| CN201910974259.9A CN110694705B (en) | 2019-10-14 | 2019-10-14 | Liquid feeding and taking device convenient for U-shaped porous glass plate absorption tube |
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| CN110694705B CN110694705B (en) | 2021-07-02 |
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