CN201359589Y - Filtering factor detecting device of polymer solution - Google Patents

Abstract

The utility model relates to a filtering factor detecting device of polymer solution, which solves the defects that the existing polymer filtering factor detecting technology of using a measuring cylinder to measure the volume has poor measuring precision and inconvenient maintenance. The detecting device of the polymer filtering factor comprises an electronic balance (5) and a controller (6) which are connected by wires; the electronic balance (5) is provided with a liquid collector (4); a liquid storage device (2) is arranged above the liquid collector (4); the lower end of a liquid outlet of the liquid storage device (2) faces an upper opening of the liquid collector (4); the bottom part in the liquid storage device (2) is provided with a filtering film (3); the upper end of the liquid storage device (2) is connected with an electromagnetic valve (1), a pressure reducing valve (9) and a gas cylinder (8) sequentially through pipelines; and the controller (6) is connected with the electromagnetic valve (1). The device replaces the mode of using the measuring cylinder to measure volume in the traditional technology with the mode of using the electronic balance to weigh the mass of polymer solution, improves the measuring precision and has convenient maintenance.

Description

A kind of polymer solution filterable agent pick-up unit

Technical field:

This is novel to relate to a kind of polymer solution filterable agent pick-up unit.

Background technology:

The polymer solution filterable agent is one of important indicator of estimating the polymer dry powder quality.Filterable agent is defective, will cause reservoir choke, and then causes injection pressure to rise, the normal injection of meeting impact polymer solution when serious.The filterable agent of so-called polymer solution is meant, under the effect of 0.2MPa pressure, polymer solution in the closed container will be by the nuclear pore filter film of diameter Ф 47mm, aperture 3.0 μ m, splash into the 500ml graduated cylinder, write down the time Δ T that the interior liquid volume of graduated cylinder reaches 100ml, 200ml and 300ml respectively respectively ₁₀₀, Δ T ₂₀₀With Δ T ₃₀₀, then filterable agent N is defined as:

$N=\frac{{\mathrm{\ΔT}}_{300}-{\mathrm{\ΔT}}_{200}}{{\mathrm{\ΔT}}_{200}-{\mathrm{\ΔT}}_{100}}.$

In the prior art filterable agent being tested at present, all is to adopt graduated cylinder to survey volumetric method, promptly utilizes the graduated cylinder recording solution volume that has scale, obtains the time T that volume reaches 100ml, 200ml and 300ml by artificial stopwatch then ₁₀₀, T ₂₀₀And T ₃₀₀, go out filterable agent with the counter hand computation at last.Semi-automatic test is to be respectively 100ml, 200ml and 300ml place installation level electrode at the graduated cylinder volume, the time when arriving this place in order to automatic record liquid level, uses counter hand computation filterable agent then.This survey volumetric method is found in actual applications that there are the following problems: because adopt the graduated cylinder metered volume, its measuring accuracy has been subjected to the restriction of cylinder scale precision and level electrode installation accuracy, therefore causes test error bigger; This in addition measuring method has brought inconvenience for the daily servicing of instrument, and this is because the graduated cylinder inwall is equipped with level electrode, and daily graduated cylinder cleaning and electrodes maintenance are all very difficult.

Novel content:

Survey the deficiency that the measuring accuracy that exists in the volumetric method detection technique is poor, safeguard inconvenience in order to overcome existing polymer filtration factor graduated cylinder, this is novel to provide a kind of pick-up unit of the new polymer filtration factor, the pick-up unit of this polymer filtration factor has been abandoned traditional survey volumetric method, utilized the higher electronic balance of measuring accuracy, finished detection by the quality of weighing polymer solution, thereby overcome the defective that exists in the prior art the polymer filtration factor.

Technical scheme of the present invention is: the pick-up unit of this polymer filtration factor comprises electronic balance, controller, described electronic balance is connected with described controller lead, be placed with liquid trap on the electronic balance, the liquid trap top is provided with reservoir, the liquid outlet lower end of reservoir is right against the upper shed of liquid trap, the reservoir inner bottom part has filter membrane, and the reservoir upper end is connected with solenoid valve, reduction valve and gas cylinder in turn by pipeline, and controller is connected with solenoid valve.

The present invention has following beneficial effect: after taking such scheme, claim mass method to substitute graduated cylinder amount volumetric method with electronic balance, can improve measuring accuracy greatly, even the measuring accuracy of electronic balance is 0.1g, adopting electronic balance to replace minimum scale is the graduated cylinder of 1ml, and measuring accuracy just can improve 10 times.In addition, can also effectively avoid in the existing testing tool because of inconvenience and the probe corrosion failure problem that the level electrode probe brings to cleaning is installed in the graduated cylinder.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model.

1-solenoid valve among the figure, 2-reservoir, 3-filter membrane, 4-liquid trap, 5-electronic balance, 6-controller, 7-printer, 8-gas cylinder, 9-reduction valve.

Embodiment:

Below in conjunction with accompanying drawing to this novel being described further: the pick-up unit of this polymer filtration factor comprises electronic balance 5, controller 6, described electronic balance 5 is connected with described controller 6 leads, be placed with liquid trap 4 on the electronic balance 5, liquid trap 4 tops are provided with reservoir 2, the liquid outlet lower end of reservoir 2 is right against the upper shed of liquid trap 4, collect by liquid trap 4 by the liquid that reservoir 2 flows out, and weigh by electronic balance 5, reservoir 2 inner bottom parts have filter membrane 3, polymer solution is filtered by filter membrane 3, reservoir 2 upper ends are connected with solenoid valve 1 in turn by pipeline, reduction valve 9 and gas cylinder 8, controller 6 is connected with solenoid valve 1, gas cylinder 8 provides pressure-sustaining gas to enter in the reservoir 2, and the polymer solution in the reservoir 2 flows in the reservoir 2 through filtering.

Usually the polymer quality concentration of mining site polymer solution is 0.1%, and water and polymer dry powder density are respectively 1.0g/ml and 0.87g/ml under normal temperature condition.With 100g water and polymer solution is example, and water volume is 100ml, and mass concentration is that 0.1% polymer solution volume calculation is as follows: (1) quality 99.9g (100g * 99.9%), corresponding volume 99.9ml; (2) polymer quality 0.1g (100g * 0.1%), corresponding volume 0.115ml (0.1g ÷ 0.87g/ml); (3) the polymer solution volume is 100.015ml (99.9ml+0.115ml).100g polymer solution volume a big 0.015ml of volume than equal in quality water.This shows, can be similar to and think that polymer solution density is identical with water-mass density.So, numerically, polymer solution volume milliliter number just equals polymer solution quality gram number, promptly can claim quality to substitute graduated cylinder amount volume by the sub-balance of electricity consumption.If the measuring accuracy of electronic balance is that 0.1g is 0.1ml, adopting electronic balance to replace minimum scale is the graduated cylinder of 1ml, measuring accuracy just can improve 10 times, in addition, can also avoid in the existing testing tool because of inconvenience and the probe corrosion failure problem that the level electrode probe brings to cleaning is installed in the graduated cylinder.Technical scheme described in this is novel is at first injected the lower end with polymer solution to be measured and is had in the reservoir 2 of controlled liquid outlet; Then electronic balance 5 is vertically placed reservoir 2 liquid outlet lower ends, liquid trap 4 openings on the electronic balance 5 are right against the reservoir liquid outlet; Opening liquid outlet successively, pick up counting when first solution splashes in the container on the electronic balance, is T with this time set ₀Time T when solution quality reaches 100 grams in the container under the journal ₁₀₀Note the time T when solution quality reaches 200 grams in the container ₂₀₀Note the time T when solution quality reaches 300 grams in the container ₃₀₀Can calculate according to following formula then:

$N=\frac{(T_{300}-T_0)-(T_{200}-T_0)}{(T_{200}-T_0)-(T_{100}-T_0)}$

Wherein resulting N is the polymer filtration factor just.

As shown in Figure 1, specific operation process is: reservoir 2 inner bottom parts are equipped with filter membrane 3, at first with about 400ml polymer solution of packing in the reservoir 2, liquid trap 4 is put on the electronic balance 5 and with controller 6 clear 0, start power supply and source of the gas solenoid valve 1 switch then, pressure-sustaining gas begins to enter reservoir 2 from gas cylinder 8.When observing first polymer solution of reservoir 2 outlet outflows, " RUN " switch on the start-up control device 6, instrument begin to claim quality (amount volume) and timing.When liquid quality reached 100g, 200g and 300g respectively in the liquid trap 4, controller 6 is the corresponding time T of record automatically ₁, T ₂And T ₃When 300g, controller 6 sends instruction, closes solenoid valve 1, and source of the gas is cut off, and calculate and preservation filterable agent etc. has related parameter.Operating personnel can determine whether export net results by printer 7 according to the actual requirements.

Claims (1)

1, a kind of polymer solution filterable agent pick-up unit, comprise electronic balance (5), controller (6), it is characterized in that: described electronic balance (5) is connected with described controller (6) lead, be placed with liquid trap (4) on the electronic balance (5), liquid trap (4) top is provided with reservoir (2), the liquid outlet lower end of reservoir (2) is right against the upper shed of liquid trap (4), reservoir (2) inner bottom part has filter membrane (3), reservoir (2) upper end is connected with solenoid valve (1) in turn by pipeline, reduction valve (9) and gas cylinder (8), controller (6) is connected with solenoid valve (1).

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