CN2632682Y - Automatic feeder unit without power - Google Patents

Abstract

The utility model discloses a motorless automatic sample injector, with a structure as illustrated: 1. a sample cup stating ring; 2. a sample cup; 3. a sample discharge pipe; 4. a continuous adjustable bracket; 5. a base. The motorless automatic sample injector is designed for a small size absorption spectrum analytical instrument, which is composed of the sample cup, the sample cup stating ring, the continuous adjustable bracket, a sampling pipe and the base, which realizes the motorless automatic continuous sampling by using a gravitational potential energy, thereby making the small size absorption spectrum analytical instrument realize the automatic continuous sampling under the condition of a basic cost neutrality of the small size absorption spectrum analytical instrument, whose measuring accuracy is the same as a large size absorption spectrum analytical instrument.

Description

Unpowered automatic sampler

Affiliated technical field

Automatic sampling apparatus when the utility model relates to a kind of absorption spectrometer and detects liquid sample.Absorption spectrometer is widely used in various fields such as oil, chemical industry, agricultural, environment, geology, food, health care.

Background technology

Present all kinds of absorption spectrometer sample introduction can be divided into: manually disposable putting into peristaltic pump is continuously pumped into the auto injection dual mode.Large-scale absorption spectrometer adopts peristaltic pump to pump into the auto injection mode more, and small-sized absorption spectrometer in order to reduce cost the manually disposable modes of putting into that adopt more.Manually put into mode and generally can only gather one group of data.But peristaltic pump pumps into auto injection mode continuous acquisition multi-group data, and its advantage is that measuring accuracy is higher relatively, and shortcoming is that cost is also higher relatively.

Summary of the invention

Can not automatic sampler in order to overcome small-sized absorption spectrometer, the deficiency that measuring accuracy is relatively low, the utility model provide a kind of unpowered automatic sampling apparatus, and it had both saved peristaltic pump and has reduced cost, realize auto injection again, reached the purpose that improves measuring accuracy.

The technical scheme that its technical matters that solves the utility model adopts is: utilize gravitional force to realize the purpose of unpowered auto injection, promptly $\mathrm{mgh}-A=\frac{1}{2}{\mathrm{<figure-callout\; id="2"\; label="mv"\; filenames="Y0324494500041.png"\; state="\{\{state\}\}">mv</figure-callout>}}^2.$ In the formula, the quality of m---sample, h---sample cup is to the difference in height of absorption cell, A---overcoming the merit that the resistance of ducting is done, v---the sample speed during by absorption cell.Speed v is the single-valued function of sample cup to absorption cell difference in height h, the purpose of the speed v in the time of just can reaching the adjustment sample by absorption cell by changing h.Unpowered automatic sampler is made of sample cup, sample cup set collar, continuous adjustable support and sample introduction pipe four parts.Sample cup has 2ml, 5ml, 10ml, 20ml, five kinds of specifications of 50ml, can select for use as required.

The beneficial effects of the utility model are: do not need the outer power of peristaltic pump class, utilize gravitional force to finish automatic continued inlet.Substantially do not increasing under the condition of cost of small-sized absorption spectrometer like this, making small-sized absorption spectrometer realize automatic continued inlet, measuring accuracy is identical with large-scale automatic absorption spectrometer.

Description of drawings

Unpowered automatic sampler structure as shown in the figure, 1. the sample cup set collar is used for fixing sample cup, sample cup can take off cleaning; 2. sample cup is put into sample cup through the sample or the cleaning fluid of pre-treatment, relies on gravitional force to enter the absorption cell of small-sized absorption spectrometer automatically; 3. go out the sample pipe, sample connects with small-sized absorption spectrometer absorption cell injection port by silicone rubber tube and enters absorption cell; 4. continuous adjustable support, support height h can continuously change, so that adjust the flow rate of sample in absorption cell as required; 5. pedestal.This unpowered automatic sampler can be independent structure, also can with small-sized absorption spectrometer integrative-structure.

Embodiment

The sample introduction pipe of unpowered automatic sampler and the absorption cell injection port of small-sized absorption spectrometer are linked, and needed per sample flow rate is adjusted support height.1) pours a certain amount of cleaning fluid into sample cup, clean sample cup, feed tube, absorption cell etc.2) pour a certain amount of sample into sample cup after the cleaning, sample will be with fixed rate by absorption cell, and small-sized absorption spectrometer is the continuous acquisition data simultaneously.3) clean once with cleaning fluid behind sample of every detection, operation is with 1).

Claims (3)

1. the automatic sampler of a small-sized absorption spectrometer, it can make liquid sample enter automatically and continuously in the absorption cell of absorption spectrometer, it is characterized in that: form by sample cup, sample cup set collar, continuous adjustable support, sample introduction pipe and pedestal five parts, sample cup is placed in the sample cup set collar, the sample cup set collar is installed on the continuous adjustable support, adjustable support is installed on the pedestal continuously, and sample introduction Guan Yiduan is fixed on above the sample cup, and the other end connects with absorption spectrometer.

2. unpowered automatic sampler according to claim 1, its continuous adjustable support is a metal round rod.

3. unpowered automatic sampler according to claim 1, the volume of sample cup are 2mL, 5mL, 10mL, 20mL, five kinds of specifications of 50mL, and sample cup is an one-shot forming hollow cylinder cup.

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