CN213091546U

CN213091546U - PH survey device

Info

Publication number: CN213091546U
Application number: CN202021858918.7U
Authority: CN
Inventors: 王秀国; 刘通; 朱凯; 黄弢; 乔丽丽; 刘云; 曹乐锋; 曹忠; 杨文文
Original assignee: Qingdao Agricultural Science And Technology Excellence Chemical Safety Technology Co ltd
Current assignee: Qingdao Agricultural Science And Technology Excellence Chemical Safety Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-30
Anticipated expiration: 2030-08-31

Abstract

The utility model relates to a pH survey device, including casing, probe, temperature regulation subassembly and analysis subassembly, the casing is cut apart into through the second baffle and is washd district and detection zone, fixedly connected with buckle in the washd district, and the casing top surface is equipped with the through-hole that the size is greater than the probe size, and the detection zone intercommunication has the inlet tube, install electric connection's pH electrode and reference electrode in the probe tip, the temperature regulation subassembly contains heat exchanger, circulating line, temperature-sensing ware and temperature regulation module, analysis subassembly and temperature regulation module all set up at the casing top surface, the analysis subassembly includes conversion module and constant potential source, pH electrode and reference electrode all with constant potential source electric connection, conversion module passes through the wire with the constant potential source and forms the closed circuit that establishes ties. The utility model discloses a temperature of temperature regulation subassembly compensation test liquid can realize being worth the precision measurement to test liquid pH through the cooperation of probe with the analysis subassembly, and it is convenient to use.

Description

PH survey device

Technical Field

The utility model relates to a pH valve survey technical field, concretely relates to pH survey device.

Background

In the fields of chemical industry, biology, agriculture and the like, substances are often required to be analyzed and determined in pH value, the pH value is determined to be subjected to chemical reaction with a solution to be measured through an internal electrode system, the electromotive force of a measuring electrode is obtained, then the electromotive force is converted into corresponding current through a circuit system, and finally an effective pH value is output. The outer surface of a probe for testing the pH value is easy to scale, in the prior art, the scale substances on the probe are often required to be manually treated, the good cleaning effect is difficult to ensure, and the interference of temperature factors on the pH value measurement needs to be eliminated because the temperature of the solution to be tested has great influence on the pH value measurement.

SUMMERY OF THE UTILITY MODEL

For solving the problem that proposes in the above-mentioned background art, the utility model provides a pH survey device can guarantee the good operating condition of probe, carries out reasonable temperature compensation, effectively gets rid of the interference of temperature factor to the pH value survey.

The utility model provides a following technical scheme:

a pH measuring device comprises a shell, a probe, a temperature regulating assembly and an analysis assembly, wherein a first partition plate and a second partition plate are installed in the shell, the second partition plate is fixed on the first partition plate, the shell is divided into a cleaning area and a detection area through the second partition plate, a heat preservation layer is arranged in the cleaning area, a buckle is fixedly connected in the cleaning area, a through hole with the size larger than that of the probe is formed in the top surface of the shell, a water inlet pipe is communicated with the detection area, an electrically connected pH electrode and a reference electrode are installed in the end portion of the probe, a handle is fixedly connected to the tail portion of the probe, the temperature regulating assembly comprises a heat exchanger, a circulating pipeline, a temperature sensor and a temperature regulating module, the heat exchanger, the temperature sensor and the temperature regulating module are electrically connected, the heat exchanger is arranged at the bottom end of the first partition plate, the circulating pipeline, the temperature sensor is installed in the detection area, the analysis assembly and the temperature regulation module are both arranged on the top surface of the shell, the analysis assembly comprises a conversion module and a constant potential source, the pH electrode and the reference electrode are both electrically connected with the constant potential source, and the conversion module and the constant potential source form a series closed loop through a lead.

As a further aspect of the present invention: the bottom of the cleaning area and the bottom of the detection area are both provided with valves for discharging liquid.

As a further aspect of the present invention: and a mixed solution of a potassium chloride solution with the concentration of mol/L and a preservative solution is arranged in the cleaning area.

As a further aspect of the present invention: the upper end of the water inlet pipe is provided with an overflow pipe communicated with the detection area.

As a further aspect of the present invention: and the inner ring of the through hole is provided with a rubber sealing ring.

As a further aspect of the present invention: the water inlet pipe is characterized in that a filter screen is arranged at the position of an input pipe opening of the water inlet pipe, the filter screen is made of plastic, and an electric pump is installed in the water inlet pipe.

As a further aspect of the present invention: the circulating pipeline is a glass product.

Compared with the prior art, the beneficial effects of the utility model are that:

(1): the temperature of the test liquid in the detection area is compensated through the temperature adjusting assembly, the temperature of the test liquid is automatically sensed through the temperature sensor, corresponding electric signals are transmitted to the temperature adjusting module, the temperature adjusting module outputs the corresponding electric signals to the heat exchanger to be heated or cooled, the circulating pipeline communicated with the heat exchanger performs heat exchange on the test liquid, the influence of temperature conditions on the measurement of pH is effectively avoided, and the measurement is accurate;

(2): during detection, the probe penetrates through the through hole and is placed in the detection area, the handle part is placed on the shell, during cleaning, the probe is placed in the cleaning area, the probe part is placed in the buckle, the handle part is placed on the buckle, the use is convenient and fast, and the stability of the device is good;

(3): the pH value of the test solution is measured through the probe and the analysis assembly, after the pH electrode and the reference electrode are immersed into the test solution, the pH electrode and the reference electrode output potential difference due to chemical reaction, the potential difference is converted into current through a circuit, and the stable current is converted into the corresponding pH value through the conversion module, so that the pH value of the test solution can be measured quickly and accurately;

(4): the filter screen can intercept suspended impurities in the water body, so that the device is prevented from being blocked, and good working conditions of the device are guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the detection zone of the present invention;

FIG. 3 is a partial view of the present invention at position A;

fig. 4 is a top view of the present invention;

fig. 5 is a schematic view of the connection of the temperature adjustment assembly of the present invention.

The labels in the figure are: 1-a shell; 101-a first separator; 102-a second separator; 2-a washing area; 201-an insulating layer; 3-detection area; 301-a through hole; 302-an overflow pipe; 4-water inlet pipe; 401-a screen; 402-an electric pump; 5-a probe; 501-a pH electrode; 502-a reference electrode; 6-a handle; 7-buckling; 8-a temperature regulating component; 9-a heat exchanger; 10-a circulation pipe; 11-a temperature sensor; 12-analysis component 13-transformation module; 14-a constant potential source; 15-temperature regulating module.

Detailed Description

Referring to fig. 1-5, the embodiment provides a pH measuring device, including a housing 1, a probe 5, a temperature adjusting assembly 8 and an analyzing assembly 12, a first partition plate 101 and a second partition plate 102 are installed in the housing 1, the second partition plate 102 is fixed on the first partition plate 101, the housing 1 is divided into a cleaning zone 2 and a detection zone 3 by the second partition plate 102, valves for discharging liquid are respectively disposed at the bottoms of the cleaning zone 2 and the detection zone 3, a heat insulating layer 201 is disposed in the cleaning zone 2, a buckle 7 is fixedly connected in the cleaning zone 2, a mixed solution of a potassium chloride solution and a preservative solution with a concentration of 3mol/L is disposed in the cleaning zone 2, a scale-forming substance on the outer surface of the probe 5 can be effectively cleaned by soaking the mixed solution, a through hole 301 with a size larger than that of the probe 5 is disposed on the top surface of the housing 1, a rubber sealing ring is disposed on the inner ring, the stability of the device during detection is enhanced, the detection area 3 is communicated with the water inlet pipe 4, the upper end of the water inlet pipe 4 is provided with an overflow pipe 302 communicated with the detection area 3, the input pipe port of the water inlet pipe 4 is provided with a filter screen 401, the filter screen 401 is made of plastic, the filter screen 4 can intercept suspended impurities in water, the device is prevented from being blocked, and the good working condition of the device is ensured, the water inlet pipe 4 is internally provided with an electric pump 402, the end part of the probe 5 is internally provided with a pH electrode 501 and a reference electrode 502 which are electrically connected, the tail part of the probe 5 is fixedly connected with a handle 6, the temperature adjusting component 8 comprises a heat exchanger 9, a circulating pipeline 10, a temperature sensor 11 and a temperature adjusting module 15, the heat exchanger 9, the temperature sensor 11 and the temperature adjusting module 15 are electrically connected, the heat exchanger 9 is, a part of the circulating pipeline 10 penetrates through the first partition plate 101 and extends into the detection area 3, the circulating pipeline 10 is made of glass, the temperature sensor 11 is installed in the detection area 3, the analysis assembly 12 and the temperature regulation module 15 are both arranged on the top surface of the shell 1, the analysis assembly 12 comprises a conversion module 13 and a constant potential source 14, the pH electrode 501 and the reference electrode 502 are both electrically connected with the constant potential source 14, and the conversion module 13 and the constant potential source 14 form a series closed loop through conducting wires.

During specific work, the electric pump 402 is turned on to inject water into the detection area 3, excessive water overflows from the overflow pipe 302, the electric pump 402 is turned off, a temperature signal sensed by the temperature sensor 11 is fed back to the temperature adjusting module 15, the temperature adjusting module 15 adjusts the heat exchanger 9, a fluid medium in the heat exchanger 9 exchanges heat with test liquid through the circulating pipeline 10, the test liquid is usually made to reach 25 ℃, the end of the probe 5 penetrates through the through hole 301 to be immersed into the test liquid, a potential difference is output by the pH electrode 501 and the reference electrode 502 due to chemical reaction, the potential difference is converted into current through a circuit, and the conversion module 13 converts the stabilized current into a corresponding pH value. When cleaning probe 5, take out probe 5 through handle 6, place probe 5 in buckle 7, the mixed liquid in the washing district 2 soaks the washing to probe 5.

It should be noted that the preferred embodiments of the present invention are given in the description and the drawings of the present invention, however, the present invention can be realized in many different forms, and is not limited to the embodiments described in the present specification, and the embodiments are not provided as additional limitations to the present invention, and the purpose of providing the embodiments is to make understanding of the disclosure of the present invention more thorough and comprehensive. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. A pH measuring device comprising a housing (1), a probe (5), a temperature regulating assembly (8) and an analyzing assembly (12), characterized in that: install first baffle (101) and second baffle (102) in casing (1), second baffle (102) are fixed on first baffle (101), wash district (2) and detection zone (3) are split into in casing (1) through second baffle (102), be equipped with heat preservation (201) in wash district (2), fixedly connected with buckle (7) in wash district (2), casing (1) top surface is equipped with through-hole (301) that the size is greater than probe (5) size, detection zone (3) intercommunication has inlet tube (4), install electric connection's pH electrode (501) and reference electrode (502) in probe (5) tip, probe (5) afterbody fixedly connected with handle (6), temperature regulation subassembly (8) contain heat exchanger (9), circulating line (10), temperature-sensing ware (11) and temperature regulation module (15), heat exchanger (9), The temperature sensor (11) is electrically connected with the temperature adjusting module (15), the heat exchanger (9) is arranged at the bottom end of the first partition plate (101), the circulating pipeline (10) is connected to a circulating port of the heat exchanger (9), a part of the circulating pipeline (10) penetrates through the first partition plate (101) and extends into the detection area (3), the temperature sensor (11) is installed in the detection area (3), the analysis component (12) and the temperature adjusting module (15) are both arranged on the top surface of the shell (1), the analysis component (12) comprises a conversion module (13) and a constant potential source (14), the pH electrode (501) and the reference electrode (502) are both electrically connected with the constant potential source (14), and the conversion module (13) and the constant potential source (14) form a series closed loop through conducting wires.

2. A pH assay device as claimed in claim 1, wherein: and valves for discharging liquid are arranged at the bottoms of the cleaning zone (2) and the detection zone (3).

3. A pH assay device as claimed in claim 1, wherein: and a mixed solution of a potassium chloride solution with the concentration of 3mol/L and a preservative solution is arranged in the cleaning area (2).

4. A pH assay device as claimed in claim 1, wherein: an overflow pipe (302) communicated with the detection area (3) is arranged at the upper end of the water inlet pipe (4).

5. A pH assay device as claimed in claim 1, wherein: and a rubber sealing ring is arranged on the inner ring of the through hole (301).

6. A pH assay device as claimed in claim 1, wherein: the water inlet pipe is characterized in that a filter screen (401) is arranged at the position of an input pipe opening of the water inlet pipe (4), the filter screen (401) is made of plastic, and an electric pump (402) is installed in the water inlet pipe (4).

7. A pH assay device as claimed in claim 1, wherein: the circulating pipeline (10) is a glass product.