Quickly-corrected pH meter

Abstract

The utility model provides a rapid correction pH meter which comprises a machine body, a display control screen is fixedly installed on the upper surface of the machine body, a liquid storage unit is arranged on one side of the display control screen, an electrode is connected to the surface of one side of the machine body, a lifting mechanism is arranged between the electrode and the machine body, and a correction groove is formed in the lower side of the electrode. Through the use of the liquid storage unit and the arrangement of a plurality of liquid storage beakers on the upper surface of the machine body, correction standard solutions with different pH values, distilled water for cleaning, electrode protection liquid and the like can be respectively placed, the use is convenient, through the use of the liquid extraction mechanism, liquid extraction pipes are placed in different liquid storage beakers, the operation can be performed through a peristaltic pump, and the operation is convenient. The pH standard correction liquid, distilled water, electrode protection liquid and the like in the liquid storage unit are discharged into the correction tank through the guide pipe, the correction tank and the electrodes in the correction tank can be blow-dried through the use of the blow-drying mechanism and the work of the air heater, and the correction time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of acid-base determination, and in particular to a fast-calibrated pH meter. Background Art

[0002] Acid-base determination is a common chemical analysis method, which is mainly used to determine the acidity and alkalinity of a solution. This determination method is based on the proton transfer reaction between acids and bases in water. A pH meter is required for acid-base determination. In experiments in the fields of food, pharmaceuticals, chemical water treatment, etc., pH meters are frequently used, including the configuration of mobile phases and solutions, acid-base determination of liquid samples, etc.

[0003] For colleges and universities, scientific research, testing and other units, daily testing tasks are heavy. For test operators, the existing pH meter needs to be turned on and preheated during use, and the electrode needs to be cleaned with distilled water and wiped dry with filter paper. A calibration standard solution with an appropriate pH value needs to be calibrated, and two to three calibrations are required. Personnel are required to perform tedious calibration work, which greatly affects work efficiency. In addition, the existing pH meter usually has a mechanical arm to connect the electrode. When adjusting the mechanical arm to move the electrode, the operator may accidentally touch the electrode to the inner wall of the calibration tank, thereby affecting the service life of the electrode. Therefore, we have made improvements to this and proposed a pH meter with rapid calibration. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pH meter with rapid calibration, which solves the problems mentioned in the background technology.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] Rapid calibration pH meter to solve the above problems.

[0007] The specific application is as follows:

[0008] It comprises a body, a display control screen is fixedly mounted on the upper surface of the body, a liquid storage unit is arranged on one side of the display control screen, an electrode is connected to one side surface of the body, a lifting mechanism is arranged between the electrode and the body, a correction groove is arranged on the lower side of the electrode, a liquid extraction mechanism is arranged inside the body, and a drying mechanism is arranged on the lower side of the correction groove;

[0009] The liquid storage unit comprises a placement groove, and the placement groove is opened on the upper surface of the machine body. A liquid storage beaker is placed inside the placement groove, and a plurality of the placement grooves and the liquid storage beakers are provided.

[0010] As a preferred technical solution of the present application, the lifting mechanism includes a fixed cylinder, and the fixed cylinder is fixedly installed on the upper surface of the machine body, the interior of the fixed cylinder is slidably connected with a sliding rod, and a connecting rod is fixedly installed on the upper surface of the sliding rod, and the connection between the connecting rod and the electrode is a fixed connection.

[0011] As a preferred technical solution of the present application, a fixing plate is fixedly installed inside the fixing cylinder, and a threaded rod is rotatably connected inside the fixing plate, and the threaded rod is connected to the sliding rod by a threaded connection, a first bevel gear is fixedly installed on the lower end of the threaded rod, and a second bevel gear is meshingly connected on one side of the first bevel gear, a rotating rod is fixedly installed inside the second bevel gear, and the rotating rod rotates inside the fixing cylinder, and a knob is fixedly installed on one end surface of the rotating rod.

[0012] As a preferred technical solution of the present application, a sealing ring is provided inside the upper opening of the correction groove.

[0013] As a preferred technical solution of the present application, the pumping mechanism includes a peristaltic pump, and the peristaltic pump is fixedly installed inside the body. A catheter is provided inside the peristaltic pump, and both ends of the catheter extend to the outside of the body.

[0014] As a preferred technical solution of the present application, the drying mechanism includes a cavity, and the cavity is opened inside the body, a hot air blower is installed inside the cavity, and a grille plate is fixedly installed between the upper surface of the body and the upper top of the cavity, and an air inlet is opened on one side surface of the cavity.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the scheme of this application:

[0017] 1. Through the use of the liquid storage unit, a number of liquid storage beakers are arranged on the upper surface of the machine body, which can be used to place calibration standard solutions of different pH values, as well as distilled water and electrode protection liquid for cleaning, etc., for easy use. Through the use of the liquid extraction mechanism, the liquid extraction tube is placed in different liquid storage beakers, and the peristaltic pump can be used to discharge the pH standard calibration solution, distilled water, electrode protection liquid, etc. inside the liquid storage unit into the calibration tank through the conduit. Through the use of the drying mechanism, the hot air blower can be used to dry the calibration tank and the internal electrodes, thereby shortening the calibration time.

[0018] 2. Through the use of the lifting mechanism, when the electrode needs to be placed in the correction groove, the knob on one side of the fixed cylinder can be turned to drive the rotating rod and the second bevel gear to rotate, and the first bevel gear and the threaded rod that are meshed on the surface can be driven to rotate, and the sliding rod can be driven to slide inside the fixed cylinder, which can drive the connecting rod and the electrode to move up and down, so as to prevent the operator from accidentally touching the electrode to the inner wall of the correction groove, which will affect the service life of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a rapid calibration pH meter provided in this application;

[0020] Figure 2 A schematic diagram of the cross-sectional structure of the rapid calibration pH meter provided in the present application;

[0021] Figure 3 A schematic diagram of the internal structure of the fixed barrel of the pH meter for rapid calibration provided in this application;

[0022] Figure 4 pH meter with rapid calibration provided for this application Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0023] Indicated in the figure:

[0024] 1. Machine body; 2. Display control panel; 3. Liquid storage unit; 301. Placement slot; 302. Liquid storage beaker; 4. Electrode; 5. Lifting mechanism; 501. Fixed cylinder; 502. Sliding rod; 503. Connecting rod; 504. Fixed plate; 505. Threaded rod; 506. First bevel gear; 507. Second bevel gear; 508. Rotating rod; 509. Knob; 6. Correction slot; 601. Sealing ring; 7. Liquid extraction mechanism; 701. Peristaltic pump; 702. Catheter; 8. Drying mechanism; 801. Cavity; 802. Hot air blower; 803. Grille plate; 804. Air inlet. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described examples are part of the embodiments of the utility model, not all of the embodiments.

[0026] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In order to solve the technical problems in the background technology, the following rapid calibration pH meter is provided:

[0031] Combination Figure 1 - Figure 4 As shown, the utility model provides a rapid calibration pH meter, including a body 1, a display control screen 2 is fixedly installed on the upper surface of the body 1, and a liquid storage unit 3 is arranged on one side of the display control screen 2, an electrode 4 is connected to the surface of one side of the body 1, and a lifting mechanism 5 is arranged between the electrode 4 and the body 1, a correction groove 6 is arranged on the lower side of the electrode 4, a liquid extraction mechanism 7 is arranged inside the body 1, and a drying mechanism 8 is arranged on the lower side of the correction groove 6, the liquid storage unit 3 includes a placement groove 301, and the placement groove 301 is opened on the upper surface of the body 1, a liquid storage beaker 302 is placed inside the placement groove 301, and a plurality of placement grooves 301 and liquid storage beakers 302 are provided, and liquid storage beakers 302 are placed in a plurality of placement grooves 301, and pH standard calibration liquid, distilled water, electrode protection liquid, etc. used for experiments can be stored inside the plurality of liquid storage beakers 302, so as to facilitate experiments.

[0032] As a preferred embodiment, on the basis of the above-mentioned method, further, the lifting mechanism 5 includes a fixed cylinder 501, and the fixed cylinder 501 is fixedly installed on the upper surface of the body 1, the interior of the fixed cylinder 501 is slidably connected with a sliding rod 502, and the upper surface of the sliding rod 502 is fixedly installed with a connecting rod 503, and the connection between the connecting rod 503 and the electrode 4 is a fixed connection. The sliding rod 502 slides in the fixed cylinder 501, which can drive the connecting rod 503 and the internal electrode 4 to move up and down, and the electrode 4 can be inserted into the correction groove 6 for easy detection, thereby preventing the electrode 4 from hitting the inner wall of the correction groove 6 and affecting the use.

[0033] As a preferred embodiment, on the basis of the above-mentioned method, further, a fixing plate 504 is fixedly installed inside the fixing cylinder 501, and a threaded rod 505 is rotatably connected inside the fixing plate 504, and the threaded rod 505 is connected to the sliding rod 502 by a threaded connection, a first bevel gear 506 is fixedly installed at the lower end of the threaded rod 505, and a second bevel gear 507 is meshingly connected to one side of the first bevel gear 506, a rotating rod 508 is fixedly installed inside the second bevel gear 507, and the rotating rod 508 rotates inside the fixing cylinder 501, and a knob 509 is fixedly installed on the surface of one end of the rotating rod 508, by rotating the knob 509, the rotating rod 508 and the second bevel gear 507 on the surface can be driven to rotate, and the threaded rod 505 is driven to rotate through the meshing first bevel gear 506, which can drive the sliding rod 502 inside the fixing cylinder 501 to move up and down.

[0034] As a preferred embodiment, on the basis of the above method, a sealing ring 601 is further provided inside the upper opening of the correction groove 6. When the electrode 4 is inserted into the correction groove 6, it can be sealed by the sealing ring 601, so that the electrode 4 can be stored in a saturated sodium chloride solution or other electrode protection solution.

[0035] As a preferred embodiment, on the basis of the above-mentioned method, further, the liquid pumping mechanism 7 includes a peristaltic pump 701, and the peristaltic pump 701 is fixedly installed inside the body 1, a catheter 702 is arranged inside the peristaltic pump 701, and both ends of the catheter 702 extend to the outside of the body 1, and the liquid storage unit 3 is provided with a plurality of liquid storage beakers 302, and pH standard calibration liquid, distilled water, electrode protection liquid, etc. are respectively arranged inside. When different liquids need to be discharged into the calibration tank 6, one end of the catheter 702 can be inserted into one of the liquid storage beakers 302, and the other end of the catheter 702 can be inserted into the calibration tank 6. The peristaltic pump 701 works to discharge the required liquid into the calibration tank 6.

[0036] As a preferred embodiment, on the basis of the above method, further, the drying mechanism 8 includes a cavity 801, and the cavity 801 is opened inside the body 1, a hot air blower 802 is installed inside the cavity 801, and a grille plate 803 is fixedly installed between the upper surface of the body 1 and the upper top of the cavity 801, and an air inlet 804 is opened on one side surface of the cavity 801. The grille plate 803 can make the hot air blown out by the hot air blower 802 blow to the correction groove 6, so as to dry the correction groove 6 and the internal electrodes, shorten the correction time, and improve the work efficiency.

[0037] Specifically, the working principle of this solution is:

[0038] Before the experiment begins, the system is turned on to automatically run the calibration program, the peristaltic pump 701 is started, distilled water is drawn from the liquid storage unit 3 through the conduit 702 and discharged into the calibration tank 6 to clean the electrode 4, the waste liquid after cleaning is emptied, and the hot air blower 802 blows the residual liquid in the calibration tank 6 dry. The above operation is repeated three times, and the cleaning of the electrode 4 is completed; after the cleaning is completed, calibration standard solutions of different pH values ​​are respectively drawn from the liquid storage unit 3, and the electrode 4 is calibrated with the corresponding pH. The above cleaning procedure is performed on the calibration tank 6 each time the calibration solution is replaced.

[0039] After the calibration is completed, the test personnel take over and directly pull out the cleaned and dried electrode 4 from the calibration tank 6 and insert it into the sample to be tested for testing; if different samples need to be tested, the electrode 4 can be reinserted into the calibration tank 6 to start the cleaning procedure. After the test is completed, the electrode 4 is inserted back into the calibration tank 6, and the electrode protection liquid, such as saturated potassium chloride solution, is drawn from the liquid storage unit 3 and discharged into the calibration tank 6 to preserve the electrode 4. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A rapid calibration pH meter, comprising a body (1), characterized in that: A display control screen (2) is fixedly mounted on the upper surface of the machine body (1), and a liquid storage unit (3) is provided on one side of the display control screen (2); an electrode (4) is connected to one side surface of the machine body (1), and a lifting mechanism (5) is provided between the electrode (4) and the machine body (1); a correction groove (6) is provided on the lower side of the electrode (4); a liquid extraction mechanism (7) is provided inside the machine body (1), and a drying mechanism (8) is provided on the lower side of the correction groove (6); The liquid storage unit (3) comprises a placement groove (301), and the placement groove (301) is opened on the upper surface of the machine body (1), a liquid storage beaker (302) is placed inside the placement groove (301), and a plurality of the placement groove (301) and the liquid storage beaker (302) are provided.

2. A rapid calibration pH meter according to claim 1, characterized in that: The lifting mechanism (5) comprises a fixed cylinder (501), and the fixed cylinder (501) is fixedly mounted on the upper surface of the machine body (1); a sliding rod (502) is slidably connected inside the fixed cylinder (501), and a connecting rod (503) is fixedly mounted on the upper surface of the sliding rod (502); the connecting rod (503) is connected to the electrode (4) in a fixed manner.

3. A rapid calibration pH meter according to claim 2, characterized in that: A fixing plate (504) is fixedly installed inside the fixing cylinder (501), and a threaded rod (505) is rotatably connected inside the fixing plate (504), and the threaded rod (505) is connected to the sliding rod (502) in a threaded connection manner, a first bevel gear (506) is fixedly installed at the lower end of the threaded rod (505), and a second bevel gear (507) is meshingly connected to one side of the first bevel gear (506), a rotating rod (508) is fixedly installed inside the second bevel gear (507), and the rotating rod (508) rotates inside the fixing cylinder (501), and a knob (509) is fixedly installed on one end surface of the rotating rod (508).

4. A rapid calibration pH meter according to claim 1, characterized in that: A sealing ring (601) is provided inside the upper opening of the correction groove (6).

5. A rapid calibration pH meter according to claim 1, characterized in that: The liquid pumping mechanism (7) comprises a peristaltic pump (701), and the peristaltic pump (701) is fixedly installed inside the machine body (1). A catheter (702) is provided inside the peristaltic pump (701), and both ends of the catheter (702) extend to the outside of the machine body (1).

6. A rapid calibration pH meter according to claim 1, characterized in that: The drying mechanism (8) comprises a cavity (801), and the cavity (801) is opened inside the machine body (1), a hot air blower (802) is installed inside the cavity (801), and a grille plate (803) is fixedly installed between the upper surface of the machine body (1) and the upper top of the cavity (801), and an air inlet (804) is opened on one side surface of the cavity (801).

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