CN215894286U

CN215894286U - Quick measuring device of carbon dioxide absorbent absorptivity

Info

Publication number: CN215894286U
Application number: CN202122085089.4U
Authority: CN
Inventors: 汪东平; 陈于金; 舒远; 张安明
Original assignee: Chongqing Kelong Safety Equipment Co ltd; CCTEG Chongqing Research Institute Co Ltd
Current assignee: Chongqing Kelong Safety Equipment Co ltd; CCTEG Chongqing Research Institute Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-22
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to the technical field of detection equipment, and discloses a device for rapidly determining the absorptivity of a carbon dioxide absorbent, which comprises a body, a weighing module, a grinding module, a measuring cup instrument set and a absorptivity determination module, wherein the weighing module, the grinding module, the measuring cup instrument set and the absorptivity determination module are all arranged on the body; the weighing module is used for weighing samples, the grinding module is used for grinding the samples, the measuring cup instrument set is used for preparing sample solutions and measuring the volumes of the solutions, and the absorption rate measuring module is used for measuring and displaying the absorption rates. The problems of slow determination time, complex operation, difficult operation and low determination efficiency in the prior art are solved.

Description

Quick measuring device of carbon dioxide absorbent absorptivity

Technical Field

The utility model relates to the technical field of detection equipment, in particular to a device for rapidly determining the absorption rate of a carbon dioxide absorbent.

Background

The carbon dioxide absorbent, also called carbon dioxide absorbent, has a chemical component of calcium hydroxide.

The calcium hydroxide is used as a medicament for removing harmful gases by a self-rescuer and an oxygen respirator, the using amount is large, the range is wide, and whether the absorption rate of the calcium hydroxide is qualified or not directly relates to the life safety of rescue team members. According to mine rescue regulations (2016 revision): the 'calcium hydroxide drug assay device' is a standard device in a configuration table of basic equipment of a rescue team (an independent middle team), and the fifty-ninth item puts requirements on the quality of calcium hydroxide: "calcium hydroxide was assayed once a quarter and reached an absorption of not less than 30%". At present, a common calcium hydroxide absorption rate measuring device is manufactured according to the industry standard of China, the chemical reaction and weighing principle is adopted, the chemical reaction time exceeds 1h, the speed is low, and the efficiency is low.

Besides the chemical reaction and weighing method, a pH value acid-base method can be adopted to mainly determine the pH value of the calcium hydroxide solution, and the determination speed is higher. The existing pH value acid-base method measuring device is complex in structure, needs to measure multiple data such as pH value, water content and the like, comprehensively judges the absorption rate, is complex to operate, is not easy for non-professionals to get on hand, and does not meet the requirement of on-site rapid measurement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for rapidly measuring the absorption rate of a carbon dioxide absorbent, which can solve the problems of slow measuring time, complex operation, difficult operation and low measuring efficiency in the prior art.

The basic scheme provided by the utility model is as follows: the device for rapidly measuring the absorptivity of the carbon dioxide absorbent comprises a body, a weighing module, a grinding module, a measuring cup instrument set and a absorptivity measuring module, wherein the weighing module, the grinding module, the measuring cup instrument set and the absorptivity measuring module are all arranged on the body; the weighing module is used for weighing samples, the grinding module is used for grinding the samples, the measuring cup instrument set is used for preparing sample solutions and measuring the volumes of the solutions, and the absorption rate measuring module is used for measuring and displaying the absorption rates.

The principle and the advantages of the utility model are as follows: each module is integrated on the body, and the operation is convenient and the measurement is rapid. The weighing module is used to define the sample mass. The grinding module is used for grinding the sample into powder so as to prepare a sample solution. A cuvette instrument set was used to define the sample solution volume. After defining the sample mass and the solution volume, the absorbance determination module calculates the absorbance by measuring the solution. The method for directly measuring the solution has the advantages of quick measurement time, simple and convenient operation steps, universality for non-professionals, easiness in operation, accordance with the on-site quick measurement requirement and high measurement efficiency.

Further, the grinding module includes a mortar and a pestle.

The common mortar and pestle of chemical experiment are integrated on the body, easy operation.

Further, the weighing module comprises an electronic balance scale and tweezers.

The electronic balance scale is convenient to be weighed, and the tweezers are convenient to take samples.

Further, the accuracy of the electronic balance scale is 1 mg.

The samples taken were small and required an electronic balance scale accuracy of 1 mg.

Further, the measuring cup instrument set comprises a 600ml glass measuring cup and a glass rod.

The glass rod is convenient to stir when the solution is prepared, the prepared solution is about 400ml, and the maximum measurement volume does not exceed 2/3 of the measuring range, so a 600ml glass measuring cup is selected.

Further, the absorptivity survey module includes pH value survey unit, computational element, display element, and pH value survey unit and display element all are connected with the computational element electricity.

The utility model adopts a pH value acid-base method to directly measure the pH value of the solution, obtains the absorption rate of calcium hydroxide through an algorithm, and displays the result through a display unit.

Further, the measurement accuracy of the pH measurement unit is 0.001.

In order to ensure the accuracy of the calculation result, the pH value measurement accuracy is required to be 0.001.

Further, the absorption rate measuring module further comprises a temperature measuring unit, the temperature measuring unit is electrically connected with the calculating unit, and the calculating unit calculates temperature compensation according to the measured temperature.

For test accuracy above 0.1pH, temperature compensation is required, otherwise temperature affects pH measurements. The temperature measuring unit measures the current ambient temperature, and the calculating unit performs temperature compensation according to the measured temperature through an algorithm.

Further, the body is equipped with the recess that holds each module, weighing module, grinding module, graduated flask instrument group, absorptivity survey module demountable installation are on the recess of body.

The detachable installation mode of each module is convenient for replacing a single module.

Further, the body is provided with an upper cover, the upper cover is hinged to the body, and a handle is arranged on the outer side of the body.

The upper cover is closed to protect the body, and the handle outside the body is convenient to carry. The portability is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a logic block diagram of each module according to an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

the reference numbers in the drawings of the specification include: the device comprises a body 1, an electronic balance scale 2, a mortar 3, a mortar pestle 31, a glass measuring cup 4, a glass rod 41, a calculating unit 5, a pH value measuring unit 51, an upper cover 6 and a handle 7.

Example (b):

as shown in fig. 1, the device for rapidly determining the absorption rate of the carbon dioxide absorbent comprises a body 1, an upper cover 6, a weighing module, a grinding module, a measuring cup instrument set and an absorption rate determination module. The body 1 is of a box-shaped structure and is made of aluminum alloy materials, grooves for containing the modules are formed in the upper portion of the body, and plastic handles 7 are arranged on the outer side portions of the body 1. The upper cover 6 is matched with the body 1 in shape and made of aluminum alloy, and the upper cover 6 is hinged with the body 1. The weighing module, the grinding module, the measuring cup instrument set and the absorption rate measuring module are all installed on the body 1.

The weighing module comprises an electronic balance scale 2 and tweezers, the electronic balance scale 2 is embedded in the body 1, and the tweezers are clamped on the electronic balance scale 2. The precision of the electronic balance scale 2 is 1mg, the measuring range is 10kg, and the electronic balance scale 2 is provided with a liquid crystal display screen for displaying the mass. The tweezers are made of stainless steel.

The grinding module comprises a mortar 3 and a pestle 31. The mortar 3 and the pestle 31 are made of ceramic materials and are embedded in the body 1. The mortar 3 had an inner diameter of 8cm and the pestle 31 had a length of 7 cm.

The measuring cup instrument set comprises a glass measuring cup 4 and a glass rod 41, the glass measuring cup 4 and the glass rod 41 are embedded in the body 1, the volume of the glass measuring cup 4 is 600ml, and the side wall of the measuring cup is marked with scales. The glass rod 41 is a solid glass rod 41 having a length of 15 cm.

The absorption rate measuring module includes a pH value measuring unit 51, a calculating unit 5, a display unit, and a temperature measuring unit. The calculating unit 5 is embedded in the body 1, the shell of the calculating unit is made of plastic materials, and a control panel is arranged in the calculating unit. The control panel comprises a controller, wherein the controller is STM32F101C8T6, a 32-bit microcontroller and a pin 36. And a switch button and a reset button are arranged on the shell of the computing unit 5, and the switch button and the reset button are electrically connected with the input end of the controller. The pH value measuring unit 51 is a pH value test pen, the model is PH818, the pH value measuring range is 0-14, the precision is 0.001, the temperature of the working environment is 0-50 ℃, the pH value test pen is electrically connected with the input end of the controller in the calculating unit 5 through a data line, the pH value test pen is contacted with the solution through a probe, and the pH value data is transmitted to the controller. The temperature measuring unit is a small thermocouple type temperature sensor, the temperature measuring range is-50-500 ℃, the temperature measuring probe is a liquid temperature measuring probe with the diameter of 3.3mm, the temperature measuring probe is arranged on the probe of the pH value testing pen and is electrically connected with the input end of the controller through a data line, the probe of the pH value testing pen is contacted with the solution, and the temperature measuring unit transmits the temperature data of the liquid to the controller. The display unit is a liquid crystal display screen with 8cm by 6cm and is arranged on the shell of the computing unit 5, and the display unit is electrically connected with the output end of the controller in the computing unit 5.

All the parts embedded in the body 1 can be detached, and the parts are convenient to take down for use and replacement.

The embodiment comprises the following specific implementation processes:

the logic block diagram of the real-time process of each module is shown in fig. 2. First, the switch button of the calculation unit 5 is pressed to turn on the calculation unit 5, and the reset button is pressed to zero the absorption rate data on the display unit. The calcium hydroxide sample to be measured was collected using a forceps, placed in a mortar 3, and ground into powder with a mortar pestle 31. A piece of test paper is laid on the electronic balance 2, peeling is carried out, and 0.2g of calcium hydroxide sample is slowly weighed on the electronic balance. 400ml of water and then a calcium hydroxide sample were poured into the glass beaker 4, and stirred well using the glass rod 41, and water was slowly added to the glass beaker 4 until the volume of the solution became 400 ml. The solution is contacted by the tip of the pH test pen and the solution pH data and solution temperature data are received by the computing unit 5. If the measured solution temperature is 30 ℃, the calculating unit 5 compensates for the pH value of 20 ℃, according to the pH value pH method formula: temperature t: 20 ℃; mass m1 of calcium hydroxide sample: 0.2 g; volume of water V: about 0.4L; the absorption X is then:

k is the pH value, the absorption rate can be calculated, and the pH value, the temperature and the absorption rate of the solution are displayed on a screen.

After use, the upper cover 6 is closed, and the handle 7 is held for carrying.

The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the utility model in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the utility model may be embodied in practice with the teachings of the utility model. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Quick survey device of carbon dioxide absorbent absorptivity which characterized in that: the device comprises a body, a weighing module, a grinding module, a measuring cup instrument set and an absorption rate measuring module, wherein the weighing module, the grinding module, the measuring cup instrument set and the absorption rate measuring module are all arranged on the body; the weighing module is used for weighing samples, the grinding module is used for grinding the samples, the measuring cup instrument set is used for preparing sample solutions and measuring the volumes of the solutions, and the absorption rate measuring module is used for measuring and displaying the absorption rates.

2. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 1, characterized in that: the grinding module includes a mortar and a pestle.

3. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 1, characterized in that: the weighing module comprises an electronic balance scale and tweezers.

4. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 3, characterized in that: the accuracy of the electronic balance scale is 1 mg.

5. The apparatus for rapid determination of carbon dioxide absorbent absorption rate according to claim 4, characterized in that: the measuring cup instrument set comprises a 600ml glass measuring cup and a glass rod.

6. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 5, characterized in that: the absorption rate measuring module comprises a pH value measuring unit, a calculating unit and a display unit, wherein the pH value measuring unit and the display unit are electrically connected with the calculating unit.

7. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 6, characterized in that: the measurement precision of the pH value measurement unit is 0.001.

8. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 7, characterized in that: the absorption rate measuring module further comprises a temperature measuring unit, the temperature measuring unit is electrically connected with the calculating unit, and the calculating unit calculates temperature compensation according to the measured temperature.

9. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 1, characterized in that: the body is equipped with the recess that holds each module, weighing module, grinding module, graduated flask instrument group, absorptivity survey module demountable installation are on the recess of body.

10. The apparatus for rapidly measuring a carbon dioxide absorbent absorption rate according to claim 9, characterized in that: the body is provided with an upper cover, the upper cover is hinged to the body, and a handle is arranged on the outer side of the body.