Sampling device for pH measurement

Abstract

The utility model provides a sampling device for pH value measurement, and relates to the technical field of sampling devices. The sampling device for pH value measurement includes a sampling component and a measuring component, the sampling component includes a sampler and a sealing plug, a water inlet is provided on the top of the sampler, the sealing plug is used to seal the water inlet, the measuring component includes a measuring box and a pH meter, the measuring box is divided into a slow flow area and a measuring area by a vertically arranged partition, the pH meter is inserted into the measuring area, the slow flow area is connected to the sampler through a water pipe, and a first filter is provided on the top of the partition. It can reduce the impact of liquid on the pH meter, avoid scaling on the probe electrode surface, effectively improve the detection accuracy, and extend the service life of the pH meter.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a sampling device for measuring pH values. Background Art

[0002] The slurry media required for measuring pH value in industry generally contain solids and salts, have high viscosity, and are prone to adhesion and clogging, which makes it difficult to measure the pH value of the slurry. The probe electrode is easily contaminated, resulting in inaccurate display. If the slurry flow rate is too high, it will cause wear and damage to the electrode.

[0003] At present, the commonly used methods for measuring slurry pH are manual sampling, pipeline branch sampling and slurry pool detection. Manual sampling is inefficient and cannot connect to measure the slurry pH value; pipeline branch sampling has the problem that the slurry flow rate is too fast, the probe electrode is easily worn, and it is inconvenient to rinse; slurry pool detection cannot display the pH value in time, and the probe electrode is difficult to rinse. The existence of these problems leads to a short service life and low detection accuracy of the current pH sampling device. Utility Model Content

[0004] The utility model aims to provide a sampling device for pH value measurement, which can reduce the impact of liquid on the pH meter, avoid scaling on the probe electrode surface, effectively improve the detection accuracy, and extend the service life of the pH meter.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A sampling device for measuring pH value comprises a sampling component and a measuring component. The sampling component comprises a sampler and a sealing plug. A water inlet is provided on the top of the sampler. The sealing plug is used to seal the water inlet. The measuring component comprises a measuring box and a pH meter. The measuring box is divided into a slow flow area and a measuring area by a vertically arranged partition. The pH meter is inserted into the measuring area. The slow flow area is connected to the sampler through a water pipe, and a first filter is arranged on the top of the partition.

[0007] Furthermore, the sampling assembly also includes a cylinder, a pull rod and a support rod. The pull rod is movably installed in the cylinder, the bottom of the pull rod is connected to the sealing plug, and the cylinder and the sampler are connected through the support rod.

[0008] Furthermore, the top of the pull rod is fixedly connected to a top plate, and the top of the top plate is fixedly connected to a pull ring.

[0009] Furthermore, scale lines are arranged on the outer wall of the cylinder.

[0010] Furthermore, a second filter screen is provided in the sampler, and the second filter screen is located directly below the water inlet.

[0011] Furthermore, a spray head is provided in the measuring box, the spray head is connected to an external water source through a spray pipe, and a spray valve is provided on the spray pipe.

[0012] Furthermore, the bottom of the slow flow area and the measuring area is set as a slope, and a drainage pipe is arranged at the lowest point of the measuring box near the slope, and a drainage valve is arranged on the drainage pipe.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0014] The utility model samples the sample through a sampler, and then seals the sampler with a sealing plug, so that other impurities can be prevented from falling into the sample in the sampler, affecting the test results, and improving the accuracy of the test results. Then the sample in the sampler is transported to the measuring box through a water pipe, and first enters the slow flow area in the measuring box, so that the sample speed can be slowed down, preventing the pH meter from being worn, and the sample can also be allowed to precipitate in the slow flow area to reduce the impact of solids on the measurement results. The sample in the slow flow area is filtered through the first filter screen at the top of the partition, which can reduce the solids in the sample again. The sample filtered through the first filter screen enters the measuring area, and the measurement can be performed when the water level in the measuring area submerges the probe electrode of the pH meter. The slow flow area can reduce the liquid flow rate, reduce the impact of the liquid on the pH meter, and prevent the pH meter from being worn; the slow flow area and the first filter screen can cooperate to reduce the content of solids in the liquid, effectively avoid scaling on the surface of the probe motor, improve the accuracy of the test results, and reduce the difficulty of cleaning the pH meter, which is conducive to improving the service life of the pH meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a sampling device for pH value measurement provided in Example 1 of the utility model;

[0017] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 This is a schematic diagram of the structure of the cylinder provided in Example 1 of the utility model.

[0019] Icons: 1-sampler, 2-water inlet, 3-sealing plug, 4-cylinder, 5-pull rod, 6-support rod, 7-top plate, 8-pull ring, 9-second filter, 10-drain port, 11-liquid outlet, 12-water pipe, 13-water valve, 14-liquid inlet, 15-measuring box, 16-slow flow area, 17-measuring area, 18-partition, 19-pH meter, 20-first filter, 21-drain pipe, 22-drain valve, 23-sprinkler head, 24-spray pipe, 25-spray valve, 26-scale line. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected 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.

[0022] 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.

[0023] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does 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 invention.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] like Figure 1-3 As shown, this embodiment provides a sampling device for pH value measurement, including a sampling component and a measuring component. The sampling component includes a sampler 1 and a sealing plug 3. A water inlet 2 is provided on the top of the sampler 1. The sealing plug 3 is used to seal the water inlet 2. The measuring component includes a measuring box 15 and a pH meter 19. The measuring box 15 is divided into a slow flow area 16 and a measuring area 17 by a vertically arranged partition 18. The pH meter 19 is inserted into the measuring area 17. The slow flow area 16 is connected to the sampler 1 through a water pipe 12, and a first filter 20 is provided on the top of the partition 18. The sample is sampled through the sampler 1, and then the sealing plug 3 is used to seal the sampler 1, so that other impurities can be prevented from falling into the sample in the sampler 1, affecting the test results, and improving the accuracy of the test results. Then the sample in the sampler 1 is transported to the measuring box 15 through the water pipe 12, and first enters the slow flow area 16 in the measuring box 15, which can slow down the sample speed and prevent the pH meter 19 from being worn. In addition, the sample can be precipitated in the slow flow area 16 to reduce the impact of solids on the measurement results. The sample passing through the slow flow area 16 is filtered through the first filter 20 on the top of the partition 18, which can reduce the solids in the sample again. The sample filtered through the first filter 20 enters the measuring area 17, and the measurement can be performed when the water level in the measuring area 17 submerges the probe electrode of the pH meter 19. The slow flow area 16 can reduce the liquid flow rate, reduce the impact of the liquid on the pH meter 19, and prevent the pH meter 19 from being worn; the slow flow area 16 and the first filter 20 can cooperate to reduce the content of solids in the liquid, effectively avoid scaling on the probe motor surface, improve the accuracy of the test results, and reduce the difficulty of cleaning the pH meter 19, which is conducive to extending the service life of the pH meter 19. Among them, a water valve 13 is provided on the water pipe 12, and the amount of liquid in the measuring box 15 can be controlled by the water valve 13 to avoid that the pH value cannot be measured due to too little liquid. A liquid outlet 11 is provided at the top of the sampler 1, and a liquid inlet 14 is provided at the top of the slow flow area 16. One end of the water pipe 12 is connected to the liquid outlet 11, and the other end of the water pipe 12 is connected to the liquid inlet 14, so as to realize the communication between the inside of the sampler 1 and the inside of the measuring box 15.

[0027] In this embodiment, the sampling assembly also includes a cylinder 4, a pull rod 5 and a support rod 6. The pull rod 5 is movably installed in the cylinder 4, the bottom of the pull rod 5 is connected to the sealing plug 3, and the cylinder 4 is connected to the sampler 1 through the support rod 6. Among them, a through hole is provided at the top of the cylinder 4, and the pull rod 5 is slidably inserted in the through hole, and the bottom of the cylinder 4 is open. When sampling, the pull rod 5 is pulled along the height direction of the cylinder 4, and the pull rod 5 drives the sealing plug 3 to separate from the sampler 1 (at this time, the sealing plug 3 can enter the cylinder 4) to open the sampler 1 for sampling. After the sampling is completed, the pull rod 5 is pushed in the opposite direction, and the pull rod 5 drives the sealing plug 3 to move toward the sampler 1 until the sealing plug 3 is inserted into the water inlet 2 of the sampler 1 to achieve the sealing of the sampler 1. In this way, the sampler 1 can be quickly opened and sealed to increase the sampling speed.

[0028] In this embodiment, the top of the pull rod 5 is fixedly connected with a top plate 7, and the top of the top plate 7 is fixedly connected with a pull ring 8. The pull ring 8 is provided to facilitate pushing and pulling the pull rod 5 during sampling, further increasing the speed of pulling the pull rod 5, thereby increasing the sampling speed.

[0029] In this embodiment, the outer wall of the cylinder 4 is provided with scale lines 26. By providing the scale lines 26, it is convenient to observe the depth of the cylinder 4 inserted into the sample, thereby achieving sampling of samples at different depths, which is highly practical.

[0030] In this embodiment, a second filter screen 9 is provided in the sampler 1, and the second filter screen 9 is located directly below the water inlet 2. When the sample enters the sampler 1 from the water inlet 2 of the sampler 1, the sample can be first filtered through the second filter screen 9, and then the sample can be filtered twice in conjunction with the first filter screen 20 in the measuring box 15, which can improve the filtering effect and significantly reduce the solid content in the liquid. Among them, the aperture of the first filter screen 20 can be smaller than the aperture of the second filter screen 9, which is more convenient for filtering solids of different particle sizes and further improves the filtering effect.

[0031] In this embodiment, a spray head 23 is further provided in the measuring box 15, and the spray head 23 is connected to an external water source through a spray pipe 24, and a spray valve 25 is provided on the spray pipe 24. The spray head 23 is installed on the inner top surface of the measuring box 15, and the inside of the measuring box 15 can be flushed through the spray head 23, and the pH meter 19 can also be flushed at the same time, thereby improving the convenience of cleaning the measuring box 15 and the pH meter 19.

[0032] In other embodiments, a spray head 23 may be provided inside the sampler 1 to facilitate flushing of the inside of the sampler 1. At the same time, a drain port is provided at the bottom of the sampler 1 to facilitate discharge of the liquid after flushing.

[0033] In this embodiment, the bottom of the slow flow area 16 and the measuring area 17 is set as a slope, and the measuring box 15 is provided with a drain pipe 21 near the lowest part of the slope, and a drain valve 22 is provided on the drain pipe 21. In this way, after the measurement is completed, it is convenient to discharge the liquid in the measuring box 15.

[0034] The working principle of the sampling device for pH value measurement is: first seal the sampler 1 with the sealing plug 2, then insert the sampler 1 into the sample, observe the scale line on the surface of the cylinder 4, and when it descends to the depth required to be measured, pull the pull rod 5 through the pull ring 8, and the pull rod 5 drives the sealing plug 3 to separate from the sampler 1. At this time, the sample enters the sampler 1. After the sampling is completed, the pull rod 5 is pushed by the pull ring 8 so that the sealing plug 2 seals the sampler 1. The liquid entering the sampler 1 is first filtered through the second filter screen 9, and then the liquid is discharged from the liquid outlet 11 of the sampler 1 through the water pipe 12 and enters the slow flow area 16 from the liquid inlet 14 of the measuring box 15. The liquid slowly gathers in the slow flow area 16 to achieve precipitation. When the liquid rises to the same height as the top of the partition 18, the liquid in the slow flow area 16 passes through the first filter screen 20 on the top of the partition 18 and enters the measuring area 17. When the liquid in the measuring area 17 submerges the probe electrode of the pH meter 19, the pH meter 19 measures the pH value of the liquid.

[0035] After the measurement is completed, the drain valve 22 is opened to drain the liquid in the measurement box 15 , and then the spray valve 25 is opened to rinse the measurement box 15 and the pH meter 19 using the spray head 23 .

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sampling device for pH value measurement, characterized in that: It includes a sampling component and a measuring component. The sampling component includes a sampler and a sealing plug. A water inlet is opened on the top of the sampler. The sealing plug is used to seal the water inlet. The measuring component includes a measuring box and a pH meter. The measuring box is divided into a slow flow area and a measuring area by a vertically arranged partition. The pH meter is inserted into the measuring area. The slow flow area is connected to the sampler through a water pipe, and a first filter is arranged on the top of the partition.

2. The sampling device for pH value measurement according to claim 1, characterized in that: The sampling assembly also includes a cylinder, a pull rod and a support rod. The pull rod is movably installed in the cylinder, the bottom of the pull rod is connected to the sealing plug, and the cylinder is connected to the sampler through the support rod.

3. The sampling device for pH value measurement according to claim 2, characterized in that: The top of the pull rod is fixedly connected with a top plate, and the top of the top plate is fixedly connected with a pull ring.

4. The sampling device for pH value measurement according to claim 2, characterized in that: The outer wall of the cylinder is provided with scale lines.

5. The sampling device for pH value measurement according to claim 1, characterized in that: A second filter screen is arranged in the sampler, and the second filter screen is located directly below the water inlet.

6. The sampling device for pH value measurement according to claim 1, characterized in that: A spray head is also arranged in the measuring box, and the spray head is connected to an external water source through a spray pipe, and a spray valve is arranged on the spray pipe.

7. The sampling device for pH value measurement according to claim 1, characterized in that: The bottoms of the slow flow area and the measuring area are arranged as slopes, a drain pipe is arranged at the lowest part of the measuring box near the slope, and a drain valve is arranged on the drain pipe.

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