CN200944112Y

CN200944112Y - Liquid sampling device for analyzer

Info

Publication number: CN200944112Y
Application number: CN 200620076221
Authority: CN
Inventors: 徐俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-04
Filing date: 2006-08-04
Publication date: 2007-09-05
Anticipated expiration: 2016-08-04

Abstract

The utility model relates to a liquid sample incoming device of an analyzer, which comprises liquid incoming pipes and discharge pipes that are integrated. The liquid incoming pipes are more than two liquid incoming pipes which are independent with each other, and the outlet of each liquid incoming pipe is communicated with the discharge pipe through a filter pipe. As using more than two liquid incoming pipes, the standard solution and sample solution can be sampled successively in one liquid incoming pipe, at the same time, screening agent or additive needed by a detection parameter can be sampled in another liquid incoming pipe, which not only satisfies the demand of regular detection, but also realizes that pro-processing sample solution can detect a plurality of elements. Sample pro-processing is simple, thereby the time, sample, reagent and manpower are savd. Moreover, the utility model has the advantages of flexible and convenient operation, strong applicability, thus can be applied for detection of liquid of continuous flow and intermittent flow.

Description

Analyser liquid sampling device

Technical field

The utility model relates to a kind of analyser, especially relates to a kind of analyser liquid sampling device.

Background technology

Existing analytical instrument sampling device is made of a feed tube and a drain pipe, feed tube and drain pipe are integral structure, therefore this liquid sampling device once can only carry out analyzing and testing to a kind of sample solution, when if this kind sample solution needs to add other auxiliary agent or screener, then must before last machine, in sample solution, can go up machine testing behind the adding constant volume before sample introduction.As the chromium element that contains in the test samples, then need to add the sodium dodecylsulphonate auxiliary agent, but sample solution just can't detect elements such as plumbous cadmium after adding this reagent, so not only make sample solution behind certain auxiliary agent of adding, can only detect specific a kind of element and can't detect other elements, can only carry out pre-treatment separately in order to detect a kind of element, cause wastes such as a large amount of reagent, sample and time.If add as the auxiliary agent of oxidation deterioration easily such as ascorbic acid, should be after its reducing action be given full play to could sample detection, finish detection before the dioxygen oxidation at it in by air again, make that machine pre-treatment process is difficult to grasp on the sample.

Secondly, present disclosed sampling device is owing to only be provided with the liquid in-out pipe, there is not temperature control device, therefore the temperature of sample solution can only rely on environment temperature to regulate, though can regulate and control by other auxiliary firing equipment and refrigeration plant, but need cryopreserved sample than length for sense cycle, then before detection, need to wait for after it is risen again and to detect, especially some are used the sample of organic volatile solution constant volume, solution can be heated and slowly volatilize in the process of rising again, not only make sample progressively concentrate and cause the detection error, and the organic solution that evaporates produces certain harm to health, quick-fried point also can constitute a threat to office work safety if volatilization seriously reaches facing of this organic solution, and causes analysis operation inconvenience, influences the analytical effect of sample.

Summary of the invention

The utility model provides a kind of and can satisfy conventional sense at the weak point of above-mentioned existence, can detect two or more elements simultaneously again, flexible and convenient operation, the analyser liquid sampling device that applicability is strong.

The another kind of purpose of the utility model provides a kind of analyser liquid sampling device of energy controlling liquid sample feeding temperature.

The utility model is achieved through the following technical solutions: a kind of analyser liquid sampling device, the feed tube and the drain pipe that comprise one, it is characterized in that: described feed tube is a feed tube separate more than two, and the outlet of each feed tube communicates with drain pipe by transition conduit.

The utility model is that the technical scheme that reaches above-mentioned further purpose is: the described transition conduit place that is positioned at also is provided with the bidirectional temperature control device, described bidirectional temperature control device comprises the insulation matrix and is connected the semiconductor cooler that is incubated on the matrix, temperature sensor, the heat radiation motor, heating radiator and control circuit, semiconductor cooler and temperature sensor are arranged on the inboard or the inside surface of insulation matrix, the heat radiation motor is arranged in the insulation matrix and with heating radiator and is connected, and heating radiator is arranged on the outside surface of insulation matrix, and the side that the insulation matrix is positioned at heating radiator has louvre, control circuit and semiconductor cooler, temperature sensor and heat radiation motor are electrically connected.

The utility model has the following advantages after adopting technique scheme:

1, sample pre-treatments is simple, and a pre-treatment can detect multiple element.The utility model is owing to use feed tube more than two, therefore can be in a feed tube before and after sample introduction standard solution and sample solution, play the effect the same with conventional sample hose.In addition, a plurality of feed tubes can this detected parameters of sample introduction need be used in the time of standard solution, sample reagent screener or auxiliary agent, so not only can save in the pre-treatment process and in sample, to add needed auxiliary agent of different detection elements or screener, can accomplish to detect multiple element in a kind of pre-treating method, a sample solution; And this auxiliary agent and screener etc. only need add at last machine testing period, and add when noting be used in the sample constant volume, have reduced waste, have saved time, sample, reagent and manually, and are extremely convenient and swift.

2, can play the on-line dilution effect.For optical instrument, its photosensitive-member---photomultiplier has an operating limit the highest, if certain constituent content is high in the sample, the signal of its generation has surpassed the highest usable range of photomultiplier, can carry out on the basis of conventional sense at a feed tube front and back sample introduction standard solution and sample solution easily, simultaneously in other feed tube, add ultrapure water, carry out on-line dilution, convenient to operation, accurate.

3, can play chemical reaction effects such as on-line oxidation, reduction, replace the preceding part pre-treatment work of sample feeding.When some samples detect certain element-specific, need before constant volume, add some specific chemical reagent and carry out just detecting after oxidation or the reduction reaction.Detect arsenic as atomic fluorescence, need in sample solution, add the ascorbic acid and the thiocarbamide of capacity, in the time of 20 ℃, reduce after half an hour machine testing on the ability.Therefore the sample solution that can not handle through reduction, and the reductive agent of high concentration adds respectively in the different feed tubes, can realize online reduction and directly go up machine testing.

4, can accurately control the sample introduction temperature of estimating sample.The utility model also is provided with the bidirectional temperature control device at the transition conduit place, all need use the liquid constant volume to sample solution, and need sample to carry out the occasion of prereduction or oxidation as the detection of some parameter, can respectively sample solution and auxiliary additive be added respectively in each feed tube, not only by to temperature control online carry out redox should, and the sample solution of refrigeration can also be heated to constant temperature before entering instrument, guarantee the solution energy and the abundant hybrid reaction of sample solution of online interpolation, the uncertainty that the expansion of liquids that elimination is caused by temperature variation brings guarantees the online interpolation reaction efficiency of sample.

5, can realize the low temperature sample introduction of sample solution.Because some sample solutions can decompose when high temperature, therefore can control sample solution sample introduction temperature by bidirectional temperature control device of the present utility model, satisfy sample solution and entering the instrument cryogenic thermostat state in period.Simultaneously in daily keeping, using cryopreservation usually; even if do not rise again processing before using; the utility model also can protect the different liquids sample to enter instrument analysis with the equal temperature condition, eliminated that the expansion of fluid sample under the different temperatures influence changes and the uncertainty brought.

6, can carry out a series of at thread test.The utility model does not add any screener and auxiliary agent constant volume with sample solution, when last machine testing, add required screener or auxiliary agent, can save the test pre-treatment time greatly, accomplish because of the sample detection, because of the element detection, improve detection efficiency, guarantee testing result, according to test condition and the different detection method of flexible selection.

Description of drawings

There is novel embodiment to be described in further detail below in conjunction with accompanying drawing to this reality.

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the structural representation of second kind of embodiment of the utility model.

Fig. 3 is the structural representation of another embodiment of the utility model.

Fig. 4 is the electrical schematic diagram of the utility model control circuit.

Wherein: the 1-flow control valve, the 2-flexible pipe, the 3-feed tube, the 4-transition conduit, the 5-semiconductor cooler, the 6-heating radiator, the 7-lead, the 8-control circuit, the 9-drain pipe, the 10-adapter tube, the 11-temperature sensor, 12-is incubated matrix, 13-bidirectional temperature control device, the 14-motor that dispels the heat.

Embodiment

See analyser liquid sampling device of the present utility model shown in Fig. 1～3, comprise the feed tube 3 and the drain pipe 9 of one, feed tube 3 is feed tubes separate more than two, and the outlet of each feed tube 3 communicates with drain pipe 9 by transition conduit 4.See shown in Figure 1, the utility model has two feed tubes 3, and the liquid in-out pipe is the Y shape of symmetry, or as shown in Figure 2, feed tube 3 of the present utility model also is two, the central lines of one of them feed tube 3 center line and drain pipe 9 also can have three feed tubes 3 as shown in Figure 3, make a plurality of feed tubes 3 can add standard solution and sample solution respectively, or when adding standard solution and sample reagent, can also add screener or auxiliary agent simultaneously, satisfy different test requests.The utility model is in order to control the standard solution that adds in the feed tube and the flow of sample solution and screener or auxiliary agent, at least one feed tube 3 is provided with flexible pipe 2, and flow control valve 1 is housed on the flexible pipe 2, also can on each feed tube 3, flexible pipe 2 be housed, control the caliber of flexible pipe 2 by flow control valve 1, flow control valve 1 of the present utility model can be as shown in Figure 1, push-press type flow control valve for routine, or be illustrated in figure 2 as membrane type flow quantity adjusting valve, the middle part of its diaphragm has the cruciform opening, makes things convenient for the user to control the flow that adds liquid in the feed tube 3 by flow control valve.

See shown in Fig. 1～3, transition conduit 4 places of the utility model between feed tube 3 and drain pipe 9 also are provided with bidirectional temperature control device 13, bidirectional temperature control device 13 comprises insulation matrix 12 and is arranged on the semiconductor cooler 5 that is incubated on the matrix 12, temperature sensor 11, heat radiation motor 14, heating radiator 6 and control circuit 8, semiconductor cooler 5 and temperature sensor 11 are arranged on the inboard or the inside surface of insulation matrix 12, flowing into liquid in the transition conduit by 5 pairs of semiconductor coolers heats or cools off, the heat radiation motor 14 that is arranged in the insulation matrix 12 is connected with heating radiator 6, and heating radiator 6 is arranged on the outside surface of insulation matrix 12, be positioned at heating radiator 6 one sides at insulation matrix 12 and have louvre, but dispel the heat by air blast cooling, reduce the volume of bidirectional temperature control device 13, control circuit 8 is by lead 7 and semiconductor cooler 5, temperature sensor 11 and heat radiation motor 14 are electrically connected.See shown in Figure 4, the control circuit 8 logical current rectifying and wave filtering circuits that comprise that diode D1～D4 constitutes of the present utility model, selector switch K, heat radiation motor 14, relay J, comparer A, resistance R 3～R7 and diode D7～D11, the current rectifying and wave filtering circuit input dc power provides working power, the two ends of selector switch K also are connected to the semiconductor cooler 5 that is serially connected in the relay J normally closed interlock, that heat radiation motor 14 and be serially connected on the temperature sensor 11 is made of resistance R 3 and diode D9 and resistance R 4 and diode D11 and connect branch road, the work of heat radiation motor 14 control heating radiators 6, the input end of comparer A is by diode D7, D8 and divider resistance R5, R6 is attempted by the two ends of heat radiation motor, the output terminal of comparer A meets diode D7 by the parallel branch that relay J and diode D11 constitute, the common port of D8 negative pole, the comparison termination temperature sensor 11 of comparer A, and resistance R 7 is connected between the output terminal and input end of comparer A, realize forward energising and oppositely energising by selector switch S, carry out the two point control of negative temperature and positive temperature, realize heating or cooling.See shown in Figure 4, at the two ends of semiconductor cooler 5 and relay J normally closed interlock also respectively and be connected to refrigeration pilot lamp D5 and current-limiting resistance R1 and burner on light D6 and current-limiting resistance R2, with display working condition.

See shown in Fig. 1～3 that the utility model is set with adapter tube 10 on drain pipe 9, realize connecting by adapter tube 10 checkout equipment different with the aperture.

The utility model can carry out analyzing and testing to continuous flow and the interrupted fluid sample that flows.

Claims

1, a kind of analyser liquid sampling device, the feed tube (3) and the drain pipe (9) that comprise one, it is characterized in that: described feed tube (3) is a feed tube separate more than two, and the outlet of each feed tube (3) communicates with drain pipe (9) by transition conduit (4).

2, analyser liquid sampling device according to claim 1, it is characterized in that: the described transition conduit (4) that is positioned at locates also to be provided with bidirectional temperature control device (13), described bidirectional temperature control device (13) comprises insulation matrix (12) and is connected the semiconductor cooler (5) that is incubated on the matrix (12), temperature sensor (11), heat radiation motor (14), heating radiator (6) and control circuit (8), semiconductor cooler (5) and temperature sensor (11) are arranged on the inboard or the inside surface of insulation matrix (12), heat radiation motor (14) is arranged in the insulation matrix (12) and with heating radiator (6) and is connected, and heating radiator (6) is arranged on the outside surface of insulation matrix (12), and the side that insulation matrix (12) is positioned at heating radiator (6) has louvre, control circuit (8) and semiconductor cooler (5), temperature sensor (11) and heat radiation motor (14) are electrically connected.

3, analyser liquid sampling device according to claim 2, it is characterized in that: described control circuit (8) comprises the current rectifying and wave filtering circuit that diode D1～D4 constitutes, selector switch K, motor, relay J, comparer A, resistance R 3～R7 and diode D7～D11, the two ends of selector switch K also are connected to the semiconductor cooler (5) that is serially connected in the relay J normally closed interlock, the heat radiation motor and be serially connected in temperature sensor (11) go up constitute by resistance R 3 and diode D9 and resistance R 4 and diode D11 and connect branch road, the input end of comparer A is by diode D7, D8 and divider resistance R5, R6 is attempted by the two ends of heat radiation motor (14), the output terminal of comparer A meets diode D7 by the parallel branch that relay J and diode D11 constitute, the common port of D8 negative pole, the comparison termination temperature sensor (11) of comparer A, and resistance R 7 is connected between the output terminal and input end of comparer A.

4, analyser liquid sampling device according to claim 1, it is characterized in that: described at least one feed tube (3) is provided with flexible pipe (2), and on the flexible pipe (2) flow control valve (1) is housed.

5, analyser liquid sampling device according to claim 4, it is characterized in that: described flow control valve is the push-press type flow control valve.

6, analyser liquid sampling device according to claim 4, it is characterized in that: described flow control valve is a membrane type flow quantity adjusting valve.

7, analyser liquid sampling device according to claim 1 is characterized in that: be set with adapter tube (10) on the described drain pipe (9).