CN217156302U

CN217156302U - PH survey device

Info

Publication number: CN217156302U
Application number: CN202220088378.1U
Authority: CN
Inventors: 马军礼; 赵建; 郭跃
Original assignee: Tianjin Xizerun Technology Co ltd
Current assignee: Tianjin Xizerun Technology Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-08-09
Anticipated expiration: 2032-01-13

Abstract

The application provides a pH measuring device, which comprises a shell, wherein a top plate is arranged at the upper part of the shell, a testing cavity, a soaking cavity and a cleaning cavity are arranged in the shell, a pH probe is arranged in the testing cavity, the pH probe extends to the top plate, an adjusting device is arranged between the top plate and the pH probe, and the pH probe is connected with a display device; a first adjusting device is arranged on the top plate at a position corresponding to the soaking cavity; a cleaning device is arranged in the cleaning cavity, and a second adjusting device is arranged outside the cleaning cavity; the utility model has simple structure and convenient use, can realize the functions of testing, cleaning and soaking, improves the working efficiency, ensures the testing precision and liberates the hands of the workers; the pH probe after being cleaned is placed on the adjusting device, so that the pH probe is prevented from directly contacting with air, dust and the like are prevented from being attached, and the precision is influenced.

Description

PH survey device

Technical Field

The application relates to the technical field of pH measuring equipment, in particular to a pH measuring device.

Background

The hydrogen ion concentration index is the ratio of the total number of hydrogen ions in the solution to the total amount of substances, also called pH value, and represents the numerical value of the acidity or alkalinity degree of the solution, and currently, pH value measuring methods in the acidity-alkalinity determination include a pH indicator method, a pH test paper method and a pH meter method; the pH indicator method is characterized in that a pH indicator is added into a solution to be tested, different indicators can change colors according to different pH values, the pH range can be determined according to the research of the indicators, and an accurate pH standard can be made during titration; the pH test paper method is that a glass rod is dipped in a little solution to be tested on test paper, and then the pH value of the solution can be obtained by contrasting a standard colorimetric card according to the color change of the test paper; the pH meter method is an instrument for measuring the pH value of a solution, and measures the pH value of the solution through a pH selective electrode (such as a glass electrode) and can be accurate to two positions after a decimal point; the pH probe in the pH meter method needs to be cleaned before each measurement, scales are easy to scale, and if the pH probe is not cleaned, the numerical value measurement is easy to be influenced; when the pH probe in the prior art is tested, the pH probe is manually held to test, so that two hands cannot be liberated, the pH probe is not placed at a proper position, and is directly placed on a desktop or a support to be directly contacted with air, and the precision of the pH probe is influenced to a certain extent after a long time.

Therefore, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pH measuring device, which comprises a shell, wherein the upper part of the shell is provided with a top plate, a testing cavity, a soaking cavity and a cleaning cavity are arranged in the shell, a testing container is placed in the testing cavity, a pH probe is arranged in the testing container, the pH probe extends to the top plate, an adjusting device is arranged between the top plate and the pH probe, and the pH probe is connected with a display device; a first adjusting device is arranged on the top plate at a position corresponding to the soaking cavity; a cleaning device is arranged in the cleaning cavity, and a second adjusting device is arranged outside the cleaning cavity; the top plate is provided with a liquid inlet.

As a preferable scheme, a temperature sensor is arranged in the test cavity and connected with a display device.

Preferably, the bottom of the test chamber is provided with a heating device.

As a preferred scheme, the adjusting device comprises a stud, a positioning nut is arranged on the stud, and a locking nut is arranged at the upper part of the positioning nut.

As a preferred scheme, the cleaning device comprises a motor, the motor is fixed inside the cleaning cavity and is connected with a motor shaft, the motor shaft is connected with an annular cleaning soft brush, the annular cleaning soft brush is connected with a cleaning liquid pipeline, and a drain hole is formed in the bottom of the cleaning cavity.

Preferably, a waste water storage box is further arranged at the bottom of the cleaning cavity.

As a preferable scheme, the pH determination device further comprises a test paper determination device, the test paper determination device comprises a test paper storage portion, a test paper storage groove is formed in the inner side of the test paper storage portion, transparent glass is arranged at a position, corresponding to the test paper storage groove, of the storage portion, a slide rail is arranged on the test paper storage portion, a slide seat matched with the slide rail is arranged on the slide rail, a contrast test paper is arranged on the slide seat, a contrast hole is formed in the contrast test paper, and the contrast hole is communicated with an observation hole in the slide seat.

When the utility model is used, a test container is firstly placed in the test cavity, a soaking container is placed in the soaking cavity, and a solvent can be directly added into the soaking cavity for soaking; the testing container can be directly placed with the solution to be tested, and the disposable catheter is placed in the liquid inlet pipe to pour the liquid into the testing container; then fixing the top plate at the top of the shell, placing the pH probe into a test container through a mounting hole on the top plate to measure a reagent, fixing the pH probe through an adjusting device in order to liberate two hands of a worker in the measuring process, firstly, adjusting the position of a positioning nut by rotating the positioning nut, determining the height of the pH probe extending into the reagent, then placing a mounting block of the pH probe into a stud, realizing fixation through a locking nut, and displaying the tested data through a display device for the experimenter to observe and accumulate; the reagent can be directly detected without placing a top plate, after the detection is finished, the top plate is fixed, and the cleaned pH probe is placed in the adjusting device, so that the pH probe is prevented from directly contacting with air, dust and the like are prevented from being attached, and the precision is prevented from being influenced; when the pH probe needs to be cleaned, the pH probe is placed in the annular cleaning soft brush, cleaning is carried out through rotation of the motor, and a cleaning agent is sprayed into the annular cleaning soft brush through a cleaning agent pipeline for cleaning, so that the cleaning effect is further ensured; the method is very simple and efficient; after the pH probe is used for several times or when the pH probe used for a long time is dirty, the pH probe is placed on a first adjusting device, the adjusting principle is the same as that of the adjusting device, the details are not repeated, the pH probe is placed in a solvent of a soaking cavity for soaking, the pH probe is taken out after being soaked for a certain time, the pH probe is placed in an annular cleaning soft brush, and cleaning is carried out through rotation of a motor; the solvent is directly dripped to the pH test paper of test paper storage tank through a glass rod or a straw for measurement, the slide is moved, accurate contrast can be carried out with the pH test paper through the contrast hole on the contrast test paper, through the combination of the pH test paper and a pH probe, whether an error exists can be further determined, when the pH probe is prevented from being damaged, the error is caused in measuring the pH value, but the staff cannot observe, and the pH test paper is further verified.

Drawings

FIG. 1 is a schematic structural view of angle one of the present application;

FIG. 2 is a schematic structural view of angle two of the present application;

FIG. 3 is a schematic structural view of angle III of the present application;

FIG. 4 is a schematic view of the internal structure of the housing of the present application;

FIG. 5 is a schematic structural view of the cleaning apparatus of the present application;

FIG. 6 is a schematic view of the structure of angle one of the test strip measuring device of the present application;

FIG. 7 is a schematic view showing the structure of a second angle of the test strip measuring device according to the present invention;

reference numerals:

1. outer shell 2, top plate 3, test cavity 4 and soaking cavity

5. Cleaning cavity 6, longitudinal plate 7, transverse plate 8 and detachable cover plate

9. Cleaning hole 10, magnetic mounting plate 11, pH probe 12 and adjusting device

13. Adjusting device I14, cleaning device 15, adjusting device II 16 and transparent window

17. Soaking hole 18, mounting hole 19, temperature sensor 20 and heating device

21. Water inlet 22, water outlet 23, stud 24 and positioning nut

25. Locking nut 26, motor 27, motor shaft 28 and annular cleaning soft brush

29. Cleaning solution pipeline 30, drain hole 31, waste water storage box 32 and test paper determination device

33. Liquid inlet 35, test paper storage part 36 and test paper storage groove

37. Slide rail 38, slide 39, contrast test paper 40, contrast hole

41. Mounting block 42, probe body.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be noted that the embodiments described herein are only for illustrating and explaining the present invention, and are not to be construed as limiting the present invention.

The first embodiment is as follows:

the embodiment provides a pH measuring device, which comprises a shell 1, wherein a top plate 2 is arranged at the upper part of the shell 1, the top plate 2 is detachably connected with the shell 1, and can be positioned through a screw, a stud, a positioning column and the like, preferably the positioning column, so that the device is more convenient to disassemble for multiple times and is convenient to use; a testing cavity 3, a soaking cavity 4 and a cleaning cavity 5 are arranged in the shell 2, a longitudinal plate 6 is arranged in the shell 1, the testing cavity 3 is arranged on one side of the longitudinal plate 6, a transverse plate 7 vertical to the longitudinal plate 6 is arranged on the other side of the longitudinal plate 6, the soaking cavity 4 is arranged on the upper portion of the transverse plate 7, and the cleaning cavity 5 is arranged on the lower portion of the transverse plate 7; a shell on one side of the cleaning cavity 5 is a detachable cover plate 8, so that the cleaning cavity 5 is convenient to clean, and a cleaning device in the cleaning cavity 5 is convenient to replace; the detachable cover plate 8 is provided with a cleaning hole 9 for installing a cleaning device; preferably, in order to prevent dust, impurities and the like from entering the cleaning cavity 5, a magnetic mounting plate 10 is arranged outside the cleaning hole 9 of the detachable cover plate 8; the vertical plate 6 is connected with the bottom of the shell 1 by a known way such as welding, bonding and the like, and similarly, the horizontal plate 7 is connected with the vertical plate 6 and the side wall of the inner part of the shell 1 by a known way such as welding, bonding and the like; the test chamber 3 is used for placing a test container, the test container adopts a beaker and the like, so that the test chamber is convenient to clean, and the test chamber 3 does not need to be cleaned every time; a pH probe 11 is arranged in the test container, the pH probe 11 can be an online pH sensor (online pH detector) in the prior art, the specific model is not limited, such as pHG 606/pHG 2026B/pHG826 and the like, and technicians can select the pH probe according to specific conditions; the pH probe 11 extends to the top plate 2, an adjusting device 12 is arranged between the top plate 2 and the pH probe 11, the height of the pH probe 11 in the test container can be adjusted through the adjusting device 12, and the pH probe 11 can be fixed; the pH probe 11 is connected with a display device (not shown), the display device 11 can be an industrial display in the prior art, and the electrode of the pH probe 11 can be correctly connected with the display device; the display device is arranged at the outer side of the shell 1, or not arranged on the shell 1, and can be selected by a technician according to the situation through a bracket and other external devices; a first adjusting device 13 is arranged on the top plate 2 at a position corresponding to the soaking cavity 4, the first adjusting device 13 is used for freeing the hands of workers and positioning and fixing the pH probe 11, the first adjusting device 13 and the first adjusting device 12 are identical in structure, and different description modes are used for distinguishing different installation positions and different installation numbers; a cleaning device 14 is arranged in the cleaning cavity 5, a second adjusting device 15 is arranged on the outer side of the cleaning cavity 14, the pH probe 11 is positioned and fixed through the second adjusting device 15, and the second adjusting device 15, the first adjusting device 13 and the second adjusting device 12 are identical in structure; be equipped with inlet 33 on roof 2, can directly deposit the test container with reagent in, also can introduce the test container through inlet 33 with liquid in, one side of test chamber 3 is equipped with transparent material preparation window 16, conveniently observes its inside liquid level.

When the test device is used in the embodiment, a test container is placed in the test cavity 3, a soaking container is placed in the soaking cavity 4, or a solvent is directly added into the soaking cavity 3 for soaking; the testing container can be directly placed with the solution to be tested, and the disposable catheter is placed in the liquid inlet pipe to pour the liquid into the testing container; then fixing the top plate 2 at the top of the shell 1, placing the pH probe 11 into a test container through the mounting hole 18 on the top plate 1 to measure a reagent, fixing the pH probe 11 through the adjusting device 12 in order to liberate the two hands of a worker in the measurement process, and displaying the tested data through the display device for the experimenter to observe and accumulate; when the pH probe 11 needs to be cleaned, the pH probe is placed in the cleaning cavity 5 and cleaned through the cleaning device 14, so that the cleaning effect is ensured, and the cleaning device is very simple and efficient; after the pH probe 11 is used for several times, or when the pH probe 11 used for a long time is dirty, the pH probe 11 is placed on a first adjusting device 13, the adjusting principle is the same as that of the adjusting device 12, no further description is given here, the pH probe 11 is placed in a solvent of the soaking cavity 4 through a soaking hole 17 in the top plate 2 for soaking, and after the pH probe is soaked for a certain time, the pH probe is taken out and placed in a cleaning device 14 for cleaning; the utility model discloses in, if need quick detection pH value, also can not fix roof 2, directly detect it through artifical handheld, detect the back fixed roof 2 that finishes, make things convenient for placing of pH probe 11, prevent that random placing from causing the influence to its precision.

Example two:

the measurement precision is further improved in the implementation, and specifically:

some solvents need to control the temperature when measuring the pH value, in this embodiment, a temperature sensor 19 is disposed in the test chamber 3, and the temperature sensor 19 may also extend the temperature sensor 19 into the test chamber 3 by forming a test hole on the top plate 2; the temperature sensor 19 is connected with a display device; the temperature tested by the temperature sensor is displayed through a display device for the reference of workers, and a heating device 20 is arranged at the bottom of the testing cavity 3; the heating device 20 is heated by circulating water in the prior art, which is described simply, the heating device 20 includes a coiled pipe arranged at the bottom of the test chamber 3, one end of the coiled pipe is connected with a water inlet 21, the other end of the coiled pipe is connected with a water outlet 22, the water inlet 21 and the water outlet 22 are connected with a heating device, the heating device can be heated by gas, gas or the like, and is not limited herein specifically, water pumps, valves and the like in the prior art are set on the water inlet 21 and the water outlet 22 as required, and are the prior art, and are not described herein again; except above-mentioned heating device, the utility model discloses can also adopt ceramic heater etc. among the prior art, do not do here specifically to be repeated, technical staff particular case select can.

Example three:

the present embodiment defines the structures of the adjusting device 12, the adjusting device one 13, and the adjusting device two 15, the structures of the adjusting device 12, the adjusting device one 13, and the adjusting device two 15 are the same, and the different descriptions are provided to distinguish different numbers and different installation positions.

The adjusting device 12, the adjusting device I13 and the adjusting device II 15 respectively comprise a stud 23, a positioning nut 24 is arranged on the stud 23, and a locking nut 25 is arranged at the upper part of the positioning nut 24; at least one, preferably two, studs 23, positioning nuts 24 and locking nuts 25 are arranged, and are symmetrical about the middle of the mounting block 41; the height of the pH probe 11 is set through a positioning nut 24, and the pH probe 11 is fixed through a locking nut 25; the pH probe 11 comprises a probe body 42, wherein an installation block 41 is arranged on the probe body 42, a threaded hole matched with the stud 23 is formed in the installation block 41, the positioning nut 24 is screwed to the height needing to be positioned, the threaded hole of the installation block 41 is matched with the stud 23, and then locking is carried out through the locking nut 25; the top plate 2 is provided with a mounting hole 18, and the probe body 42 is placed into the test cavity 3 through the mounting hole 18.

Example four:

the present embodiment describes the cleaning device 14:

the cleaning device 14 includes a motor 26, the motor 26 can adopt a stepping motor and a servo motor in the prior art, the specific model is not limited, the technician can select according to the specific situation, the motor is connected with a control device, the control device is connected with a display device, and the display device can input instructions and other operations to the control device, and the display device adopts an industrial touch display screen in the prior art, namely, the display can be realized, and the display device can also be used for the operations of inputting instructions and the like, and is the prior art, the utility model discloses do not do specific details here; the control device adopts a single chip microcomputer in the prior art, and the utility model does not specifically limit the specific model, such as 89S 51; the technical personnel can select according to specific conditions, the control device controls the motor to rotate forwards and backwards, the angle of each rotation is 180 degrees, the control device controls the motor to rotate forwards for 180 degrees firstly and then rotate backwards for 180 degrees, and the steps are repeated; the motor 26 is fixed inside the cleaning cavity 5, that is, the motor 26 is fixed on the longitudinal plate 6, and the motor 26 and the longitudinal plate 6 are fixed by a motor bracket in the prior art; the motor 26 is connected with a motor shaft 27, the motor shaft 27 is connected with an annular cleaning soft brush 28, the annular cleaning soft brush 28 is preferably a silica gel soft brush, and the diameter of an annular inner ring is equal to that of the pH probe 11, so that a better cleaning effect is ensured; the annular cleaning soft brush 28 and the motor shaft 27 are fixed in a fixing mode in the prior art such as bonding; annular washs soft brush 28 and is connected with washing liquid pipeline 29, annular washs the inside of soft brush 28 and is connected with washing liquid pipeline 29 promptly, washing liquid pipeline 29 and confession liquid device are connected, like supply liquid case, supply fluid reservoir etc, the washing liquid that has the cleaner has been placed in the confession liquid device, on flowing into annular washs the pH probe 11 of cladding in the soft brush 28 through the washing liquid pipeline, motor 26 starts, it is rotatory to drive motor shaft 27, thereby it rotates to drive annular washs soft brush 28, controlling means control motor carries out corotation and reversal promptly, angle when rotatory at every turn is 180 degrees, if: the control device controls the motor to rotate forwards for 180 degrees first and then rotate backwards for 180 degrees, and the operation is circulated in such a way, so that the pH probe 11 is cleaned, the situation that a cleaning solution pipeline is wound on the surface of the annular cleaning brush is avoided, and the whole cleaning process is influenced; the cleaning liquid pipeline 29 is provided with valves and pumps according to requirements, which are all in the prior art and are not described herein again; a drain hole 30 is formed in the bottom of the cleaning cavity 5, a drain pipeline is arranged on the drain hole 30, valves and pumps are set on the drain pipeline according to needs, the setting is the prior art, the detailed description is omitted, and the waste water after cleaning is discharged through the arrangement of the drain pipeline; preferably, the bottom of washing chamber 5 is equipped with waste water storage box 31, and waste water directly arranges in waste water storage box 31, and the staff handles can.

Controlling means can also set for abluent long, control motor's start-up and closing, through carrying out the input of instruction to controlling means when the motor starts, operates through display screen, switch etc. and is conventional prior art, the utility model discloses do not do here and specifically give unnecessary details.

Example five:

the test paper determination device 32 is further arranged in the embodiment, so that the condition that the pH probe 11 is damaged and the pH value is not accurately measured can be prevented, and the test paper determination device 32 is used for checking; the test paper determination device 32 can also be used independently to detect a solution with low precision requirement, so that the situation that the test paper cannot be found in emergency is prevented, and the arrangement of the embodiment ensures that the comparison is more convenient and more accurate.

Specifically, the test paper determination device 32 includes a test paper storage portion 35, a test paper storage groove 36 is formed in the test paper storage portion 35, a pH test paper is placed in the test paper storage groove 36, and a liquid can be directly dropped onto the pH test paper through a suction tube, a glass rod, and the like to perform measurement; transparent glass is arranged at the position of the test paper storage part 35 corresponding to the test paper storage groove 36, and the test result of the pH test paper is displayed through the transparent glass; the test paper storage part 35 is provided with a slide rail 37, the slide rail 37 is provided with a slide seat 38 matched with the slide rail 37, the slide seat 38 is provided with a contrast test paper 39, the contrast test paper 39 is provided with a contrast hole 40, and the contrast hole 40 is communicated with an observation hole in the slide seat 38; by moving the slide 38, a more accurate comparison with the pH test paper can be made through the comparison hole 40 of the comparison test paper 39.

Example six:

the automation degree of the equipment is improved in the embodiment, the temperature sensor 19 is connected with a control device, and the control device is connected with a heating device 20 at the bottom of the test cavity 3; the control device can be a single chip microcomputer in the prior art, and the specific model is not limited, such as 89S 51; the temperature sensor 19 transmits the tested temperature data to the control device, and when the tested temperature data is inconsistent with the preset temperature, the control device controls the heating device 20 to heat, namely, the heater is controlled to heat the water flow, and the coil pipe is used for heating the bottom of the test cavity 3, so that the temperature of the solution to be tested in the test cavity 3 is increased; the temperature sensor 19 transmits temperature data of the real-time test to the control device, and when the temperature data is consistent with the preset temperature, the control device controls the corresponding heating device 20 to stop heating.

When the working principle of the utility model is used, a testing container is placed in the testing cavity 3, a soaking container is placed in the soaking cavity 4, or a solvent is directly added in the soaking cavity 4 for soaking; the testing container can be directly placed with the solution to be tested, or a disposable catheter is placed in the liquid inlet 33 to pour the liquid into the testing container; then fixing the top plate 2 at the top of the shell 1, placing the pH probe 11 into a test container through the mounting hole 18 on the top plate 2 to measure a reagent, in order to liberate two hands of a worker in the measurement process, fixing the pH probe 11 through the adjusting device 12, firstly, rotating the positioning nut 24 and adjusting the position of the positioning nut 24 to determine the height of the pH probe 11 extending into the reagent, then placing the mounting block 41 of the pH probe 11 into the stud 23, realizing the fixation through the locking nut 25, and displaying the tested data through a display device for an experimenter to observe and accumulate; or the top plate 2 is not placed, the reagent is directly used for detection, after the detection is finished, the top plate 2 is fixed, and the cleaned pH probe 11 is placed on the adjusting device 12, so that the pH probe 11 is prevented from being directly contacted with air, dust and the like are prevented from being attached, and the precision is further influenced; when the pH probe 11 needs to be cleaned, the pH probe is placed in the annular cleaning soft brush 28, the cleaning is carried out through the rotation of the motor 26, and a cleaning agent is sprayed into the cleaning solution pipeline 29 for cleaning, so that the cleaning effect is further ensured; the method is very simple and efficient; after the pH probe 11 is used for several times, or when the pH probe 11 used for a long time is dirty, the pH probe 11 is placed on a first adjusting device 13, the adjusting principle is the same as that of the adjusting device 12, no further description is given here, the pH probe 11 is placed in a solvent of a soaking cavity 4 to be soaked, and after the pH probe is soaked for a certain time, the pH probe is taken out, placed in an annular cleaning soft brush 28 and cleaned through rotation of a motor 26; through glass stick or straw with the direct drippage of solvent on the pH test paper of test paper storage tank measure, remove slide 38, can carry out accurate contrast with the pH test paper through contrast hole 40 on the contrast test paper 39, through the combination of pH test paper and pH probe 11, can further confirm whether can have the error, when preventing that pH probe 11 from appearing the harm, lead to measuring pH and have the error, but the staff can't observe, further verify through the pH test paper.

In conclusion, due to the adoption of the technical scheme, the utility model has the advantages that the structure is simple, the use is convenient, the functions of testing, cleaning and soaking are integrated, the working efficiency is improved, the testing precision is ensured, the two hands of workers are liberated, the cleaning cleanliness is ensured, the cleaned pH probe is placed on the adjusting device, and the pH probe is prevented from directly contacting with air to cause dust and the like to adhere, so that the precision is influenced; furthermore, the utility model discloses a set for test paper survey device, can carry out comparatively accurate contrast with the pH test paper through the contrast hole on the contrast test paper, through the combination of pH test paper and pH probe, can further confirm whether the pH probe can have the great error of acid-base, when preventing that the harm from appearing in the pH probe, lead to measuring the pH and have the error, but the staff can't observe, further verify through the pH test paper.

The structure and connection relation not described in detail in the present invention are the prior art, and the present invention is not described herein in detail; the connection of above-mentioned circuit is prior art, the utility model discloses do not improve it, do not improve here, the utility model discloses an improve mainly in mechanical structure's improvement.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are included in the scope of protection of the present invention.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present application will not be described separately.

In addition, any combination of the various embodiments of the present application can be made, and the present application should be considered as disclosed in the present application as long as the combination does not depart from the spirit of the present application.

Claims

1. A pH measuring device comprises a shell (1), wherein a top plate (2) is arranged at the upper part of the shell (1), and is characterized in that a testing cavity (3), a soaking cavity (4) and a cleaning cavity (5) are arranged in the shell (1), a pH probe (11) is arranged in the testing cavity (3), the pH probe (11) extends to the top plate (2), an adjusting device (12) is arranged between the top plate (2) and the pH probe (11), and the pH probe (11) is connected with a display device; a first adjusting device (13) is arranged on the top plate (2) at a position corresponding to the soaking cavity (4); a cleaning device (14) is arranged in the cleaning cavity (5), and a second adjusting device (15) is arranged on the outer side of the cleaning cavity (5); a liquid inlet (33) is arranged on the top plate (2).

2. A pH measuring device according to claim 1, characterized in that a temperature sensor (19) is arranged in the test chamber (3), said temperature sensor (19) being connected to a display device.

3. A pH measuring device according to claim 2, characterized in that the bottom of the test chamber (3) is provided with heating means (20).

4. The pH measuring device according to claim 1, wherein the adjusting device (12) comprises a stud (23), a positioning nut (24) is arranged on the stud (23), and a locking nut (25) is arranged on the upper portion of the positioning nut (24).

5. The pH measuring device according to claim 1, wherein the cleaning device (14) comprises a motor (26), the motor (26) is fixed inside the cleaning chamber (5), the motor (26) is connected with a motor shaft (27), the motor shaft (27) is connected with an annular cleaning soft brush (28), the annular cleaning soft brush (28) is connected with a cleaning solution pipeline (29), and a drain hole (30) is formed in the bottom of the cleaning chamber (5).

6. A pH measuring device according to claim 5, wherein the bottom of the washing chamber (5) is further provided with a waste water storage tank (31).

7. The pH measuring device according to any one of claims 1 to 6, further comprising a test paper measuring device (32), wherein the test paper measuring device (32) comprises a test paper storage portion (35), a test paper storage groove (36) is formed in the test paper storage portion (35), transparent glass is arranged at a position of the test paper storage portion (35) corresponding to the test paper storage groove (36), a slide rail (37) is arranged on the test paper storage portion (35), a slide seat (38) matched with the slide rail (37) is arranged on the slide rail (37), a contrast test paper (39) is arranged on the slide seat (38), a contrast hole (40) is formed in the contrast test paper (39), and the contrast hole (40) is communicated with an observation hole in the slide seat (38).