Calibrating device of conductivity meter

Abstract

The calibration device comprises a box body, the upper part of one side of the box body is rotatably connected with a box cover, two sides of the box body are respectively provided with a liquid inlet pipe and a liquid outlet pipe, one side of the box cover is symmetrically provided with a placing port and a rubber sleeve, and the middle part of the inner cavity of the box body is movably clamped with a protective screen plate. A stirring assembly is arranged on the lower portion of the side wall of an inner cavity of the box body, buckling assemblies are symmetrically arranged on the two sides of the top of the box body, and an observation window is arranged on one side of the box body. According to the calibration device of the conductivity meter, the rubber sleeve, the protective screen plate, the stirring assembly, the buckling assembly and the like are arranged, so that the conductivity meter probe and the contrast conductivity meter probe of the water purifier are kept at the same height, the stirring assembly stirs the test liquid to enable the conductivity of each part of the test liquid to be the same, the calibration accuracy is ensured, and the calibration efficiency is improved. And meanwhile, the box cover can be buckled on the box body, so that dust in the air is prevented from polluting the test liquid, and the calibration accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conductivity meter calibration devices, in particular to a conductivity meter calibration device. Background Art

[0002] A pure water machine is a common device used to prepare solutions with corresponding conductivity and is widely used in laboratories, research institutes and other institutions.

[0003] The existing conductivity test for pure water prepared by a pure water machine generally uses a conductivity meter installed in the pure water machine itself to test the conductivity during preparation. However, since the calibration range of existing pure water machines generally does not involve 0-100μS / cm, when pure water in this range or 0.01-18.25MΩ*cm is required during the experiment, it is impossible to determine whether the reading of the conductivity meter of the pure water machine is accurate, so it is necessary to cooperate with other high-precision conductivity meters for detection and calibration.

[0004] However, the conductivity of the test liquid may be different in different parts, which may easily lead to calibration errors. At the same time, during the detection and calibration process, dust in the air may easily contaminate the test liquid, resulting in a decrease in detection accuracy. Therefore, we propose a new conductivity meter calibration device. Utility Model Content

[0005] The main purpose of the utility model is to provide a conductivity meter calibration device, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a calibration device for a conductivity meter, including a box body, a box cover is rotatably connected to the upper part of one side of the box body, a liquid inlet pipe is connected to the upper part of one side of the box body, and a liquid outlet pipe is connected to the lower part of the other side of the box body, a through placement opening is symmetrically opened on one side of the box cover, a rubber sleeve is fixedly connected to the inner cavity of the placement opening, a protective mesh plate is movably connected to the middle part of the inner cavity of the box body, a stirring assembly is provided at the lower part of the side wall of the inner cavity of the box body, and the stirring assembly is located at the lower part of the protective mesh plate, buckle assemblies are symmetrically provided on both sides of the top of the box body, and an observation window is provided on one side of the box body.

[0007] As a further description of the above technical solution, the stirring assembly includes a motor, a rotating rod, and a stirring spiral blade. The motor is fixedly connected to the lower part of the side wall of the box body, the output end of the motor passes through the inner cavity of the box body and is fixedly connected to the rotating rod, the other end of the rotating rod is rotatably connected to the side wall of the inner cavity of the box body, and the stirring spiral blade is fixedly sleeved on the rotating rod.

[0008] As a further description of the above technical solution, non-through holes are symmetrically opened on both sides of the top of the box body, and through buckling grooves are symmetrically opened on both sides of the top of the box cover.

[0009] As a further description of the above technical solution, the snap-fit ​​assembly includes a fixed column, a fixed buckle, a limit plate, a fixed ring, a spring, and a slip ring. The fixed ring is fixedly connected to the side wall of the inner cavity of the through hole, one side of the fixed ring is fixedly connected to the spring, one side of the spring is fixedly connected to the slip ring, the fixed ring, spring, and slip ring are all slidably sleeved on the fixed column, one end of the fixed column is fixedly connected to the limit plate, and the other end of the fixed column is fixedly connected to the fixed buckle.

[0010] As a further description of the above technical solution, the fixing buckle is configured to be an ellipse, the buckling groove is configured to be an ellipse, and the long radius of the fixing buckle is greater than the short radius of the buckling groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By setting up rubber sleeves, protective mesh plates, stirring components, etc., when starting to calibrate the conductivity meter that comes with the pure water machine, first inject the test liquid into the inner cavity of the box from the liquid inlet pipe, and then extend the conductivity meter probe and the comparative conductivity meter probe of the pure water machine into the placement port and fix them through the rubber sleeve. At this time, close the box cover so that the conductivity meter probe and the comparative conductivity meter probe of the pure water machine are immersed in the test liquid, start the motor, drive the rotating rod and the stirring spiral blade to rotate, so as to facilitate the stirring of the test liquid, so that the test liquid flows in the inner cavity of the box, and ensure that the conductivity of each part of the test liquid remains the same, to prevent the conductivity difference at different positions, resulting in calibration errors. At the same time, set the protective mesh plate above the stirring component to prevent the conductivity meter probe and the comparative conductivity meter probe of the pure water machine from being immersed in the test liquid too low, and the stirring spiral blades from rotating to damage the conductivity meter probe and the comparative conductivity meter probe of the pure water machine.

[0013] 2. By setting up a snap-fit ​​component, etc., since a through hole is opened on the box body, a fixing ring, a spring, and a slip ring are set in the inner cavity of the through hole, and a fixing column runs through it, and a limiting plate is fixedly connected to the bottom. When starting the calibration work, first rotate the fixing column to make it correspond to the snap-fit ​​groove of the box cover, so that the box cover can be tightly covered on the top of the box body, and then pull out the fixing buckle and rotate it to make it stuck on the top of the box cover. The slip ring is squeezed by the limiting plate, and the slip ring squeezes the spring, so that the reaction force of the spring fixes the box cover. If disassembly is required, pull out the fixing buckle and rotate it to make it stuck in the snap-fit ​​groove, so that the box cover can be easily opened, which effectively prevents dust in the air from contaminating the test fluid during calibration work, thereby improving the accuracy of calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a conductivity meter calibration device proposed by the utility model;

[0015] Figure 2 Schematic diagram of the internal structure of a calibration device for a conductivity meter proposed by the present utility model;

[0016] Figure 3 Exploded schematic diagram of the internal structure of a calibration device for a conductivity meter proposed by the present utility model;

[0017] Figure 4 Schematic diagram of the fastening component structure of a calibration device for a conductivity meter proposed by the present utility model.

[0018] In the figure: 1, box body; 2, box cover; 3, liquid inlet pipe; 4, liquid outlet pipe; 5, protective net plate; 6, stirring component; 7, placement opening; 8, rubber sleeve; 9, fastening component; 10, through hole; 11, fastening groove; 12, observation window; 6.1, motor; 6.2, rotating rod; 6.3, stirring spiral blade; 9.1, fixed column; 9.2, fixed buckle; 9.3, limiting plate; 9.4, fixed ring; 9.5, spring; 9.6, sliding ring. Specific embodiments

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Please refer to Figures 1-4The utility model provides a technical solution: a conductivity meter calibration device, comprising a box body 1, a box cover 2 is rotatably connected to the upper part of one side of the box body 1 through a hinge, a liquid inlet pipe 3 is connected to the upper part of one side of the box body 1, and a liquid outlet pipe 4 is connected to the lower part of the other side of the box body 1, and a through placement port 7 is symmetrically opened on one side of the box cover 2, and a rubber sleeve 8 is fixedly connected to the inner cavity of the placement port 7. When calibrating the conductivity meter of the pure water machine, the conductivity meter probe and the comparison conductivity meter probe of the pure water machine are respectively extended into the placement port 7 and fixed by the rubber sleeve 8. The diameter of the probe is larger than the inner diameter of the rubber sleeve 8, which is convenient for fixing the probe firmly, and the rubber sleeve 8 enhances the sealing performance of the device. A protective mesh plate 5 is movably connected in the middle of the inner cavity of the box 1, and a stirring assembly 6 is provided at the lower part of the inner cavity side wall of the box 1, and the stirring assembly 6 is located at the lower part of the protective mesh plate 5. The protective mesh plate 5 is set above the stirring assembly 6 to prevent the conductivity meter probe and the comparative conductivity meter probe of the pure water machine from being immersed in the test liquid too low, and the stirring spiral blade 6.3 rotates to damage the conductivity meter probe and the comparative conductivity meter probe of the pure water machine. The buckle components 9 are symmetrically provided on both sides of the top of the box 1, and an observation window 12 is provided on one side of the box 1, so that the calibration process can be observed, and it is convenient to deal with the fault in time.

[0023] Specifically, Figure 2 As shown, non-through holes 10 are symmetrically opened on both sides of the top of the box body 1, and through buckling grooves 11 are symmetrically opened on both sides of the top of the box cover 2. The fixing buckle 9.2 is set to be elliptical, the buckling groove 11 is set to be elliptical, and the long radius of the fixing buckle 9.2 is larger than the short radius of the buckling groove 11, so that the fixing buckle 9.2 is conveniently clamped outside the buckling groove 11.

[0024] Specifically, Figure 3 As shown, the stirring assembly 6 includes a motor 6.1, a rotating rod 6.2, and a stirring spiral blade 6.3. The motor 6.1 is fixedly connected to the lower part of the side wall of the box body 1. The output end of the motor 6.1 penetrates the inner cavity of the box body 1 and is fixedly connected to the rotating rod 6.2. The other end of the rotating rod 6.2 is rotatably connected to the inner cavity side wall of the box body 1 through a bearing, and the rotating rod 6.2 is fixedly sleeved with a stirring spiral blade 6.3. When the conductivity meter probe and the comparative conductivity meter probe of the pure water machine are immersed in the test liquid, the motor 6.1 is started to drive the rotating rod 6.2 and the stirring spiral blade 6.3 to rotate, so as to facilitate the stirring of the test liquid, so that the test liquid flows in the inner cavity of the box body 1, and the conductivity of each part of the test liquid is ensured to remain the same, and the conductivity difference at different positions is prevented, which leads to calibration errors.

[0025] Specifically, Figure 4As shown, the snap-fit ​​assembly 9 includes a fixed column 9.1, a fixed buckle 9.2, a limit plate 9.3, a fixed ring 9.4, a spring 9.5, and a slip ring 9.6. The fixed ring 9.4 is fixedly connected to the inner cavity side wall of the through hole 10, one side of the fixed ring 9.4 is fixedly connected to the spring 9.5, one side of the spring 9.5 is fixedly connected to the slip ring 9.6, the fixed ring 9.4, the spring 9.5, and the slip ring 9.6 are all slidably sleeved on the fixed column 9.1, one end of the fixed column 9.1 is fixedly connected to the limit plate 9.3, and the other end of the fixed column 9.1 is fixedly connected to the fixed buckle 9.2. When starting the calibration work, first rotate the fixing column 9.1 to make it correspond to the snap-fit ​​groove 11 of the box cover 2, so that the box cover 2 can tightly cover one side of the box body 1, and then pull out the fixing buckle 9.2 and rotate it to make it stuck on the top of the box cover 2, and squeeze the slip ring 9.6 through the limit plate 9.3, and the slip ring 9.6 squeezes the spring 9.5, so that the reaction force of the spring 9.5 fixes the box cover 2. If disassembly is required, pull out the fixing buckle 9.2 and rotate it to make it stuck in the snap-fit ​​groove 11, so that the box cover 2 can be easily opened, which effectively prevents dust in the air from contaminating the test liquid during the calibration work, thereby improving the accuracy of the calibration.

[0026] It should be noted that the utility model is a calibration device for a conductivity meter. When calibrating the conductivity meter of the pure water machine, the test liquid is first injected into the inner cavity of the box 1 from the liquid inlet pipe 3, and then the conductivity meter probe and the comparison conductivity meter probe of the pure water machine are respectively inserted into the placement port 7 and fixed by the rubber sleeve 8. At this time, the box cover 2 is closed, so that the conductivity meter probe and the comparison conductivity meter probe of the pure water machine are both immersed in the test liquid, and the motor 6.1 is started to drive the rotating rod 6.2 and the stirring spiral blade 6.3 to rotate, so as to facilitate the stirring of the test liquid and make the test liquid flow in the inner cavity of the box 1, so as to ensure that the conductivity of each part of the test liquid remains the same, and prevent the conductivity difference at different positions from causing calibration errors. The protective mesh plate 5 is arranged above the stirring assembly 6 to prevent the conductivity meter probe and the comparative conductivity meter probe of the water purifier from being immersed in the test liquid too low, and the stirring spiral blade 6.3 rotates to damage the conductivity meter probe and the comparative conductivity meter probe of the water purifier.

[0027] When starting the calibration work, first rotate the fixing column 9.1 to make it correspond to the snap-fit ​​groove 11 of the box cover 2, so that the box cover 2 can tightly cover one side of the box body 1, and then pull out the fixing buckle 9.2 and rotate it to make it stuck on the top of the box cover 2, and squeeze the slip ring 9.6 through the limit plate 9.3, and the slip ring 9.6 squeezes the spring 9.5, so that the reaction force of the spring 9.5 fixes the box cover 2. If disassembly is required, pull out the fixing buckle 9.2 and rotate it to make it stuck in the snap-fit ​​groove 11, so that the box cover 2 can be easily opened, which effectively prevents dust in the air from contaminating the test liquid during the calibration work, thereby improving the accuracy of the calibration.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. A conductivity meter calibration device, comprising a box (1), characterized in that: The upper part of one side of the box body (1) is rotatably connected to a box cover (2), the upper part of one side of the box body (1) is connected through a liquid inlet pipe (3), the lower part of the other side of the box body (1) is connected through a liquid outlet pipe (4), one side of the box cover (2) is symmetrically provided with a through placement opening (7), the inner cavity of the placement opening (7) is fixedly connected with a rubber sleeve (8), the middle part of the inner cavity of the box body (1) is movably connected with a protective mesh plate (5), the lower part of the inner cavity side wall of the box body (1) is provided with a stirring assembly (6), and the stirring assembly (6) is located below the protective mesh plate (5), buckle assemblies (9) are symmetrically provided on both sides of the top of the box body (1), and an observation window (12) is provided on one side of the box body (1).

2. A conductivity meter calibration device according to claim 1, characterized in that: The stirring assembly (6) comprises a motor (6.1), a rotating rod (6.2), and a stirring spiral blade (6.3); the motor (6.1) is fixedly connected to the lower part of the side wall of the box body (1); the output end of the motor (6.1) penetrates into the inner cavity of the box body (1) and is fixedly connected to the rotating rod (6.2); the other end of the rotating rod (6.2) is rotatably connected to the inner cavity side wall of the box body (1); and the stirring spiral blade (6.3) is fixedly sleeved on the rotating rod (6.2).

3. A conductivity meter calibration device according to claim 1, characterized in that: The box body (1) has non-through holes (10) symmetrically formed on both sides of the top, and the box cover (2) has through buckling grooves (11) symmetrically formed on both sides of the top.

4. A conductivity meter calibration device according to claim 3, characterized in that: The buckle assembly (9) comprises a fixed column (9.1), a fixed buckle (9.2), a limit plate (9.3), a fixed ring (9.4), a spring (9.5), and a slip ring (9.6); the fixed ring (9.4) is fixedly connected to the inner cavity side wall of the through hole (10); one side of the fixed ring (9.4) is fixedly connected to the spring (9.5); one side of the spring (9.5) is fixedly connected to the slip ring (9.6); the fixed ring (9.4), the spring (9.5), and the slip ring (9.6) are all slidably sleeved on the fixed column (9.1); one end of the fixed column (9.1) is fixedly connected to the limit plate (9.3); the other end of the fixed column (9.1) is fixedly connected to the fixed buckle (9.2).

5. A conductivity meter calibration device according to claim 4, characterized in that: The fixing buckle (9.2) is configured to be elliptical, the buckling groove (11) is configured to be elliptical, and the long radius of the fixing buckle (9.2) is greater than the short radius of the buckling groove (11).

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