PH electrode capable of being used in ultrapure water occasion

Abstract

The utility model relates to the technical field of pH meters, and discloses a pH electrode used in an ultrapure water occasion, which comprises an electrode tube, the bottom of the electrode tube is fixedly connected with a ground opening, the bottom of the electrode tube is sleeved with a sensitive film, the left side of the electrode tube is fixedly connected with a crank arm, the top of the crank arm is fixedly connected with a hose, and the hose is fixedly connected with the ground opening. A connecting ring is fixedly connected to the exterior of the hose, a limiting assembly is fixedly connected to the top of the connecting ring, an external ring is slidably connected to the exterior of the limiting assembly, a limiting ring is fixedly connected to the interior of the external ring, and a plurality of balls are rotatably connected to the interior of the limiting ring. According to the utility model, the external ring slides up and down, so that the external ring drives the limiting ring to be matched with the ball to slide in the rolling groove to extrude the hose on the rear side of the lantern ring, and due to the property of the hose, the ball shrinks to limit the flow rate of a potassium chloride solution in the hose.

Description

Technical Field

[0001] The utility model relates to the technical field of pH meters, in particular to a pH electrode that can be used in ultra-pure water applications. Background Art

[0002] An electrode for measuring pH value is an electrochemical sensor used to measure the acidity and alkalinity of a solution. They determine the acidity and alkalinity of a solution by measuring the hydrogen ion concentration in the aqueous solution and calculate the pH value of the solution accordingly. A pH electrode used in ultra-pure water applications is a specially designed electrode for measuring pH value in pure water or ultra-pure water.

[0003] After retrieval, a pH electrode related to the technical field of pH meters with the publication number CN214844953U includes an electrode support rod and an electrode wire. A pH electrode assembly is arranged inside the electrode support rod. An electrode bulb is arranged at the bottom of the electrode support rod. An electrode bulb protection frame is arranged at a position outside the electrode bulb at the bottom end of the electrode support rod. An electrode plug socket is also arranged at the top of the electrode support rod. The electrode wire is connected to the electrode plug socket in a plug-in manner. A detachable cap is also arranged at the top of the electrode plug socket. The utility model can effectively protect the electrode bulb through the arranged electrode bulb protection frame, improve its service life, and the electrode wire is detachable for easy cleaning of the electrode.

[0004] In the above patent, it is mentioned that "an electrode bulb protection frame is arranged at a position outside the electrode bulb at the bottom end of the electrode support rod. An electrode plug socket is also arranged at the top of the electrode support rod. The electrode wire is connected to the electrode plug socket in a plug-in manner. A detachable cap is also arranged at the top of the electrode plug socket. The utility model can effectively protect the electrode bulb through the arranged electrode bulb protection frame, improve its service life, and the electrode wire is detachable for easy cleaning of the electrode", but in the specific use process, since there are almost no ions in ultra-pure water, it is impossible to continuously add a certain amount of potassium chloride solution to catalyze it while restricting the flow rate. Therefore, in view of the above problems, a pH electrode that can be used in ultra-pure water applications is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a pH electrode that can be used in ultra-pure water applications, aiming to improve the problem that the flow rate cannot be restricted when adding potassium chloride solution in the prior art.

[0006] To achieve the above object, the present utility model provides the following technical solution: A pH electrode that can be used in ultra-pure water applications, including an electrode tube. A ground joint is fixedly connected to the bottom of the electrode tube. A sensitive film is sleeved on the bottom of the electrode tube. An elbow arm is fixedly connected to the left side of the electrode tube. A hose is fixedly connected to the top of the elbow arm. A connection ring is fixedly connected to the outside of the hose. A limiting component is fixedly connected to the top of the connection ring. An external ring is slidably connected to the outside of the limiting component. A limiting ring is fixedly connected to the inside of the external ring. A plurality of ball bearings are rotatably connected to the inside of the limiting ring.

[0007] As a further description of the above technical solution:

[0008] The limiting component includes a sleeve ring. The bottom of the sleeve ring is fixedly connected to the top of the connection ring. A plurality of rolling grooves are formed on the outside of the sleeve ring.

[0009] As a further description of the above technical solution:

[0010] The inside of the external ring is slidably connected to the outside of the sleeve ring. The outside of the ball bearing is rotatably connected to the inside of the rolling groove.

[0011] As a further description of the above technical solution:

[0012] The outside of the ball bearing is rotatably connected to the outside of the sleeve ring. The inside of the limiting ring is slidably connected to the outside of the sleeve ring.

[0013] As a further description of the above technical solution:

[0014] The outside of the ball bearing is in contact with the outside of the hose.

[0015] The present utility model has the following beneficial effects:

[0016] In the present utility model, a container for conveying potassium chloride solution is connected through a hose. Then, by sliding the external ring up and down, the external ring drives the limiting ring to cooperate with the ball bearings to slide inside the rolling grooves. As the ball bearings slide further down inside the rolling grooves, the hose behind the sleeve ring is squeezed. Due to the nature of the hose, the ball bearings contract, thereby restricting the flow rate of the potassium chloride solution inside the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Is a perspective view of a pH electrode that can be used in ultra-pure water applications proposed by the present utility model;

[0018] Figure 2 Is a schematic structural view of the elbow arm of a pH electrode that can be used in ultra-pure water applications proposed by the present utility model;

[0019] Figure 3 Schematic diagram of the hose structure of a pH electrode that can be used in ultra-pure water applications proposed by the present utility model;

[0020] Figure 4 Schematic diagram of the external ring structure of a pH electrode that can be used in ultra-pure water applications proposed by the present utility model;

[0021] Figure 5 Schematic diagram of the collar structure of a pH electrode that can be used in ultra-pure water applications proposed by the present utility model.

[0022] Legend:

[0023] 1. Electrode tube; 2. Ground joint; 3. Sensitive membrane; 4. L-shaped arm; 5. Hose; 6. Connecting ring; 7. Collar; 8. Groove; 9. External ring; 10. Limit ring; 11. Ball. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Referring to Figures 1 - 3 As shown, an embodiment provided by the present utility model: A pH electrode that can be used in ultra-pure water applications includes an electrode tube 1. The electrode tube 1 is the main part of the entire electrode. A ground joint 2 is fixedly connected to the bottom of the electrode tube 1. This design of the ground joint 2 helps to ensure the stability and accuracy of the electrode. A sensitive membrane 3 is sleeved on the bottom of the electrode tube 1. The sensitive membrane 3 is a key component for detecting the hydrogen ion concentration in the aqueous solution. The sensitive membrane 3 is usually an element that changes the electrical signal according to the pH value in the water. A L-shaped arm 4 is fixedly connected to the left side of the electrode tube 1. The L-shaped arm 4 is for connecting the electrode tube 1, and then the potassium chloride solution is transported through a hose 5. A hose 5 is fixedly connected to the top of the L-shaped arm 4. The hose 5 is for connecting to a container storing the potassium chloride solution.

[0026] Referring to Figure 5As shown, a connection ring 6 is fixedly connected to the outside of the hose 5. The connection ring 6 is used to connect the collar 7. A limiting component is fixedly connected to the top of the connection ring 6. The limiting component includes a collar 7. The collar 7 is used to open a rolling groove 8. The bottom of the collar 7 is fixedly connected to the top of the connection ring 6. A plurality of rolling grooves 8 are opened on the outside of the collar 7. The rolling grooves 8 are used to enable the balls 11 to squeeze the hose 5 inside. An external ring 9 is slidably connected to the outside of the limiting component. The external ring 9 is used to connect the limiting ring 10. The inside of the external ring 9 is slidably connected to the outside of the collar 7. The outside of the ball 11 is rotatably connected to the inside of the rolling groove 8.

[0027] Referring to Figure 4 As shown, a limiting ring 10 is fixedly connected to the inside of the external ring 9. The limiting ring 10 is used to cooperate with the external ring 9 to limit the balls 11. A plurality of balls 11 are rotatably connected to the inside of the limiting ring 10. The balls 11 are used to squeeze the hose 5, so that the hose 5 contracts, and then the flow rate of the potassium chloride solution conveyed is limited. The outside of the ball 11 is rotatably connected to the outside of the collar 7. The inside of the limiting ring 10 is slidably connected to the outside of the collar 7. The outside of the ball 11 is in contact with the outside of the hose 5.

[0028] Working principle: When the electrode tube 1 is used in pure water with a conductivity of less than 1 μs in ultrapure water, such as in electric boiler water and other occasions, since there are almost no ions in the ultrapure water and ion exchange cannot be achieved, a certain amount of potassium chloride solution needs to be continuously added to make the ultrapure water contain a large amount of chloride ions, and then ion exchange is carried out with the electrode to measure the pH value. Then, the container for conveying the potassium chloride solution is connected through the hose 5. Then, by sliding the external ring 9 up and down, the external ring 9 drives the limiting ring 10 to cooperate with the balls 11 to slide inside the rolling groove 8. When the balls 11 slide further down inside the rolling groove 8, they squeeze the hose 5 behind the collar 7. Due to the nature of the hose 5, the balls 11 contract, and then the flow rate of the potassium chloride solution inside the hose 5 is limited. Then, the potassium chloride solution passes through the elbow arm 4 and is conveyed into the inside of the electrode tube 1. Then, the potassium chloride solution enters the inside of the ground joint 2 in the form of a salt bridge, and its 360-degree flow ensures the flow rate of the potassium chloride solution, so that the instrument can stably obtain data and then complete the detection.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pH electrode that can be used in ultra-pure water applications, comprising an electrode tube (1), characterized in that: The bottom of the electrode tube (1) is fixedly connected with a ground joint (2). A sensitive film (3) is sleeved on the bottom of the electrode tube (1). The left side of the electrode tube (1) is fixedly connected with an elbow arm (4). The top of the elbow arm (4) is fixedly connected with a flexible tube (5). The outside of the flexible tube (5) is fixedly connected with a connecting ring (6). The top of the connecting ring (6) is fixedly connected with a limiting component. An external ring (9) is slidably connected to the outside of the limiting component. A limiting ring (10) is fixedly connected to the inside of the external ring (9). A plurality of balls (11) are rotatably connected to the inside of the limiting ring (10).

2. The pH electrode according to claim 1, which can be used in ultra-pure water applications, is characterized in that: The limiting component includes a sleeve ring (7). The bottom of the sleeve ring (7) is fixedly connected to the top of the connecting ring (6). A plurality of rolling grooves (8) are formed in the outside of the sleeve ring (7).

3. A pH electrode that can be used in ultra-pure water applications, as claimed in claim 2, wherein: The inside of the external ring (9) is slidably connected to the outside of the sleeve ring (7). The outside of the ball (11) is rotatably connected to the inside of the rolling groove (8).

4. A pH electrode that can be used in ultra-pure water applications, as claimed in claim 2, wherein: The outside of the ball (11) is rotatably connected to the outside of the sleeve ring (7). The inside of the limiting ring (10) is slidably connected to the outside of the sleeve ring (7).

5. A pH electrode that can be used in ultra-pure water applications, characterized in that: The outside of the ball (11) is in contact with the outside of the flexible tube (5).

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