A push button pH meter

Abstract

The utility model discloses a button formula pH meter, including work table, be provided with track on work table, the track is slidably installed with support frame, and the support frame end clamping has test pen, and the work table surface is opened in the symmetry and is placed with the slot, and the buffer solution bottle is placed in the slot, and the buffer solution bottle top is slidably installed with the lifting seat through the stand, and the lifting seat both sides are symmetrically provided with the sealing plate, and the sealing plate middle part is opened with the through -hole, and the through -hole position is equipped with the movable plate and movable cylinder, and the movable cylinder is installed with the sealing plug with the through -hole cooperation, and the spring is equipped outside the stand and is cooperated with the limiting nut and the limiting plate, and the lifting seat is provided with the pressure of pressing down, makes the sealing plate tightly cover in the buffer solution bottle top, guarantees the buffer solution seal, and when the test pen is contacted with the buffer solution and is contacted with the buffer solution bottle inside when calibrating and enters the movable plate and movable cylinder, realizes dynamic sealing, guarantees the stable of testing process.

Description

Technical Field

[0001] This utility model belongs to the technical field of pH value detection equipment, specifically relating to a button-type pH meter. Background Technology

[0002] pH meters, as commonly used instruments for measuring acidity and alkalinity, are widely used in chemical analysis, food testing, and water quality monitoring. During pH meter use, the test pen typically needs to be calibrated using buffer solutions of different pH values ​​to ensure the accuracy of the measurement results. However, existing calibration methods generally involve storing the buffer solution in a standard reagent bottle or open container, and then directly inserting the test pen into the liquid for comparison during calibration. This method has certain shortcomings.

[0003] First, conventional buffer solution bottles require opening the cap or exposing the bottle opening during calibration. During use, the buffer solution is prone to reacting with carbon dioxide or impurities in the air, causing deviations in the standard value and affecting the pH meter's calibration accuracy. Second, the buffer solution bottle is prone to positional shifts during the insertion or removal of the test pen, leading to operational instability and consequently affecting calibration results. Third, existing buffer solution bottles lack effective sealing measures during calibration, making them susceptible to buffer evaporation, contamination, or spillage, which is detrimental to maintaining the long-term stability of the buffer solution. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a button-type pH meter that can ensure the buffer solution is sealed during the pH meter calibration process, avoid contact between the buffer solution and air causing deviation of the standard value, and at the same time improve the stability of the buffer solution bottle and the ease of operation of the test pen during calibration.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A button-type pH meter includes a worktable, a track is laterally arranged on the rear side of the upper surface of the worktable, the track has a T-shaped cross-section, a support frame is slidably mounted on the track surface, and a test pen is mounted on the end of the support frame;

[0007] The workbench surface is symmetrically provided with placement slots on the side near the track. Each of the two placement slots contains a buffer preform bottle. Two columns are vertically arranged on the workbench surface and are placed parallel to each other between the two placement slots.

[0008] Lifting seats are slidably mounted on the surfaces of the two columns. Sealing plates are symmetrically arranged on both sides of the lifting seats. The sealing plates are used to seal the open top of the buffer solution bottle. A through hole is opened in the center of the surface of the sealing plate.

[0009] Furthermore, a button controller is installed on one side of the workbench, and the test pen held at the end of the support frame is connected to the button controller via a data cable.

[0010] Furthermore, a groove is formed on the upper surface of the sealing plate, and a movable plate is placed inside the sealing plate, the diameter of the movable plate being smaller than that of the groove.

[0011] Furthermore, a movable cylinder is provided at the bottom of the movable plate, and the movable cylinder passes through a through hole. During calibration, the test pen passes through the movable plate and the movable cylinder, and the diameter of the movable cylinder is smaller than that of the through hole.

[0012] Furthermore, the two buffer bottles are filled with buffer solutions of different specifications, the movable cylinder slides along the inner wall of the through hole, and the movable plate always maintains coverage of the through hole.

[0013] Furthermore, a sealing plug is installed at the top of the movable cylinder, which is used to maintain a seal on the movable plate when not in use.

[0014] Furthermore, a limiting nut is screwed onto the surface of the column, and a spring is sleeved on the surface of the column. The spring is placed between the lifting seat and the limiting nut, and the two springs exert a downward thrust on the lifting seat.

[0015] Furthermore, a limiting plate is provided below the surface of the column, which is used to limit the bottom of the lifting seat when the buffer bottle is not installed.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention features a placement groove on the workbench surface, into which a buffer solution bottle is placed. A lifting seat and sealing plate structure are installed above the buffer solution bottle, ensuring the bottle is completely sealed when not in use. This prevents the buffer solution from reacting with air, effectively preventing deviations in the standard buffer solution value and ensuring the accuracy and reliability of the calibration process.

[0018] This invention installs a lifting seat on the column and utilizes the downward pressure formed by the spring and the limiting nut to enable the lifting seat to stably press down on the sealing plate, thereby achieving automatic sealing of the buffer solution bottle. This solves the problems of poor sealing performance, easy volatilization, and easy contamination of existing buffer solution bottles during opening and closing, thus extending the shelf life of the buffer solution.

[0019] This invention provides a through hole in the sealing plate and installs a movable plate and a movable cylinder at the through hole position, enabling dynamic sealing when the test pen is inserted into the buffer solution bottle. This ensures smooth insertion and removal of the test pen and maintains a sealed state even with slight shaking of the test pen, thereby preventing buffer solution leakage and the entry of external air, and improving the stability and convenience of the calibration operation.

[0020] This invention solves the problems of poor fixation and inconvenient operation of traditional test pens by setting a track and support frame on the workbench surface, allowing the test pen to slide and adjust its position on the track, and realizing signal transmission through a button controller and data cable. At the same time, it realizes real-time control and data acquisition of the calibration process, further improving the efficiency and accuracy of calibration work. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the buffer solution bottle of this utility model in its installed state;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model under calibration conditions;

[0024] Figure 4 For the present utility model Figure 3 A schematic diagram of the cross-sectional structure;

[0025] Figure 5 For the present utility model Figure 3 A schematic diagram of the projectile structure;

[0026] Figure 6 This is an exploded structural diagram of the sealing plate and movable plate of this utility model;

[0027] Figure 7 This is a bottom-view three-dimensional structural diagram of the sealing plate of this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Workbench; 11. Rail; 12. Placement slot; 13. Column; 131. Limit plate; 2. Button controller; 3. Support frame; 4. Buffer bottle; 5. Limit nut; 51. Spring; 6. Lifting seat; 61. Sealing plate; 62. Groove; 63. Through hole; 7. Movable plate; 71. Movable cylinder; 8. Sealing plug. Detailed Implementation

[0030] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0031] Example 1:

[0032] like Figures 1-7 As shown, a button-type pH meter includes a workbench 1. A track 11 is laterally arranged on the rear side of the upper surface of the workbench 1. The track 11 has a T-shaped cross-section. A support frame 3 is slidably mounted on the surface of the track 11, and a test pen is mounted at the end of the support frame 3. The workbench 1 ensures the stability of the overall structure. The T-shaped cross-section of the track 11 can effectively limit the offset of the support frame 3 in the longitudinal and lateral directions, ensuring the positioning accuracy of the test pen during calibration and measurement. The support frame 3 provides stable clamping for the test pen, preventing the test pen from shaking and affecting the test results. At the same time, the support frame 3 can slide and adjust its position on the track 11 to meet the needs of different operating angles, solving the problems of poor test pen fixation and inconvenient operation in traditional structures.

[0033] Symmetrical placement slots 12 are provided on the side of the workbench 1 closest to the track 11. Buffer bottles 4 are placed inside each of the two placement slots 12. Two vertical columns 13 are vertically arranged on the surface of the workbench 1, positioned parallel to each other between the two placement slots 12. The symmetrical arrangement of the placement slots 12 facilitates the simultaneous installation of two sets of buffer bottles 4 for calibrating different pH ranges, ensuring the accuracy of the pH meter under different testing environments. The embedded installation of the buffer bottles 4 avoids the tipping or movement problems caused by the instability of traditional buffer bottles. The columns 13 provide a vertical guide reference for the lifting seat 6, making the up-and-down movement of the lifting seat 6 more stable and helping to achieve a reliable seal on the top of the buffer bottles 4.

[0034] Lifting seats 6 are slidably mounted on the surfaces of two columns 13. Sealing plates 61 are symmetrically arranged on both sides of the lifting seats 6. The sealing plates 61 are used to seal the open top of the buffer solution bottle 4. A through hole 63 is opened in the center of the surface of the sealing plate 61. The lifting seats 6 can move up and down under the constraint of the columns 13. Through the cooperation of the spring 51 and the limit nut 5, they maintain a stable force and position in different states, ensuring that the buffer solution bottle 4 is in a completely sealed state when not in use, and avoiding the buffer solution from reacting with air, which would cause the standard value to deviate. The sealing plates 61 can tightly cover the top of the buffer solution bottle 4 under the action of downward pressure. The through hole 63 is set to provide a channel for the insertion and removal of the test pen. At the same time, the dynamic sealing is achieved by combining the movement of the movable plate 7 and the movable cylinder 71, which solves the defects of the buffer solution being volatile and easily contaminated in the prior art.

[0035] like Figures 1-3As shown, a button controller 2 is installed on one side of the workbench 1, and the test pen held at the end of the support frame 3 is connected to the button controller 2 via a data cable. The button controller 2 can realize the start and stop control of the test pen and data transmission, avoiding the inconvenience of manual triggering in traditional operation. The data cable connection ensures the real-time transmission of the test pen measurement data, improving the efficiency and accuracy of the calibration process. At the same time, the fixed installation method of the button controller 2 and the workbench 1 reduces the impact of external operation on the stability of the overall device.

[0036] like Figure 2 , Figure 6 and Figure 7 As shown, a groove 62 is provided on the upper surface of the sealing plate 61, and a movable plate 7 is placed inside the sealing plate 61. The diameter of the movable plate 7 is smaller than that of the groove 62. The groove 62 is designed to provide a stable fitting position for the movable plate 7, preventing the movable plate 7 from shifting within the through hole 63. The movable plate 7 can float within a small range in the groove 62, so that the test pen has a certain buffer when inserted, avoiding excessive friction that could cause wear to the device. At the same time, it ensures that the through hole 63 is always in a sealed state, thereby improving the overall sealing performance and service life.

[0037] like Figures 5-7 As shown, a movable cylinder 71 is provided at the bottom of the movable plate 7, and the movable cylinder 71 passes through the through hole 63. During calibration, the test pen passes through the movable plate 7 and the movable cylinder 71. The diameter of the movable cylinder 71 is smaller than that of the through hole 63. The diameter design of the movable cylinder 71 ensures that it can move freely inside the through hole 63, and can move up and down or tilt with the movement of the test pen, while maintaining a sealed cover with the through hole 63 to prevent the buffer solution from evaporating or leaking. During the contact between the test pen and the buffer solution, the movable plate 7 and the movable cylinder 71 work together to provide a dynamic seal, ensuring the stability of the calibration operation and solving the contradiction between the insertion flexibility and sealing performance of existing buffer solution bottles.

[0038] like Figures 5-7 As shown, the two buffer bottles 4 are filled with buffer solutions of different specifications. The movable cylinder 71 slides along the inner wall of the through hole 63, and the movable plate 7 always covers the through hole 63. By injecting buffer solutions of different pH values, the buffer bottles 4 enable the test pen to be quickly calibrated under multi-point standards, improving the accuracy and reliability of the measurement results. The cooperation between the movable cylinder 71 and the movable plate 7 ensures that no air gap is formed during the insertion of the test pen, thereby preventing external air from entering the buffer bottle 4. The overall structural design improves the stability of buffer solution preservation and overcomes the problem that traditional buffer bottles are easily affected by air.

[0039] like Figure 1 and Figure 5As shown, a sealing plug 8 is installed on the top of the movable tube 71. The sealing plug 8 is used to keep the movable plate 7 sealed when not in use. When the test pen is not inserted, the sealing plug 8 tightly covers the top of the movable plate 7 to prevent the buffer solution from evaporating or being contaminated by the external environment, thus improving the shelf life of the buffer solution. At the same time, the plug-in and plug-out structure of the sealing plug 8 makes it convenient for users to operate quickly, improving the cumbersome opening and closing process of traditional buffer solution bottles.

[0040] like Figure 2 and Figure 5 As shown, a limiting nut 5 is screwed onto the surface of the column 13, and a spring 51 is sleeved on the surface of the column 13. The spring 51 is placed between the lifting seat 6 and the limiting nut 5. The two springs 51 apply a downward pushing force to the lifting seat 6. The elastic force provided by the spring 51 ensures that the lifting seat 6 can automatically adjust its position when the buffer solution bottle 4 is installed or not, so as to achieve a continuous seal on the top of the buffer solution bottle 4. The limiting nut 5 can adjust the preload of the spring 51, thereby adjusting the sealing pressure applied by the lifting seat 6 to the buffer solution bottle 4, meeting the usage requirements of buffer solution bottles 4 of different specifications, and improving the versatility and adaptability of the device.

[0041] like Figure 5 As shown, a limiting plate 131 is provided below the surface of the column 13. The limiting plate 131 is used to limit the bottom of the lifting seat 6 when the buffer solution bottle 4 is not installed. The limiting plate 131 effectively prevents the lifting seat 6 from falling further when the buffer solution bottle 4 is missing, ensuring the stability of the overall device structure and preventing the lifting seat 6 from leaving the trajectory of the column 13, which could cause jamming or damage. At the same time, the presence of the limiting plate 131 also provides a clear positioning reference for installing the buffer solution bottle 4, enabling the buffer solution bottle 4 to be placed in place quickly and accurately, thus improving operational efficiency.

[0042] Example 2:

[0043] See Figures 1-7 The operation process of a button-type pH meter in actual use is as follows:

[0044] First, the buffer bottle 4 is pre-filled with standard buffer solutions of different pH values, such as pH=4.00 and pH=7.00, and then placed inside the placement slots 12 symmetrically opened on the surface of the workbench 1. The wall of the placement slot 12 is in close contact with the outer wall of the buffer bottle 4 to prevent the buffer bottle 4 from shifting during use. The bottom of the buffer bottle 4 is in contact with the bottom plane of the placement slot 12 to ensure that the buffer bottle 4 is vertically stable.

[0045] After the buffer solution bottle 4 is installed, the lifting seat 6 automatically descends under the action of the spring 51 and maintains vertical movement under the guidance of the column 13. The bottom of the lifting seat 6 is finally supported by the limiting plate 131. At this time, the lifting seat 6 completely covers the top opening of the buffer solution bottle 4 through the sealing plates 61 installed symmetrically on both sides. The lower surface of the sealing plate 61 fits against the bottle mouth of the buffer solution bottle 4 to form a seal, preventing the buffer solution from reacting due to contact with carbon dioxide in the air and ensuring the long-term stability of the buffer solution standard value.

[0046] During calibration, the user first triggers the system via button controller 2. Button controller 2 and the test pen held at the end of support frame 3 are electrically connected via a data cable to ensure real-time transmission of calibration data. Then, the user pulls out the sealing plug 8 at the top of the buffer bottle 4. The sealing plug 8 and the movable plate 7 normally block external air, but when pulled out, it provides an insertion channel for the test pen. After the test pen is taken out from the clamping end of support frame 3, it slides along track 11 to be aligned with the position directly above the buffer bottle 4.

[0047] When the test pen is inserted, the pen tip first passes through the through hole 63 of the sealing plate 61, then passes through the movable plate 7 and the movable cylinder 71 in sequence, and finally penetrates into the buffer solution bottle 4 to fully contact the buffer solution. The design of the movable cylinder 71 having a smaller diameter than the through hole 63 ensures that it can slide flexibly inside the through hole 63 during insertion. The movable plate 7 always maintains its coverage of the through hole 63, thus achieving dynamic sealing during the movement of the test pen. At the same time, the cooperation between the movable plate 7 and the groove 62 allows the movable plate 7 to float within the groove 62 to a limited extent, so that the seal will not be damaged when the test pen is inserted or shaken slightly.

[0048] During calibration, the tip of the test pen makes full contact with the buffer solution, and the sensor output signal is transmitted to the button controller 2 through the data cable. The button controller 2 transmits the data to the display or storage unit in real time to realize the acquisition and processing of calibration data. The slight shaking of the test pen in the buffer solution is buffered by the movable cylinder 71 to ensure that the buffer solution and the test pen make fuller contact and improve the calibration accuracy.

[0049] After calibration, the user pulls out the test pen, and the movable plate 7 and the movable cylinder 71 maintain the sealed state of the through hole 63 under the reset action; the user then reinserts the sealing plug 8 into the top of the movable plate 7, and the sealing structure formed between the sealing plug 8 and the movable plate 7 further prevents air from entering the buffer bottle 4; under the continuous downward pressure of the spring 51, the lifting seat 6 always keeps the sealing plate 61 and the buffer bottle 4 tightly covered, so that the buffer is in a sealed protection state for a long time.

[0050] Through the above operation process, the button-type pH meter not only ensures the sealing of the buffer solution before and after calibration, avoiding the deviation of the standard value caused by the contact between the buffer solution and air, but also improves the stability of the buffer solution bottle 4, avoiding the problems of bottle shaking, overflow or contamination during traditional calibration. At the same time, it achieves dynamic sealing with full contact between the test pen and the buffer solution, significantly improving calibration accuracy and ease of operation.

[0051] The working principle of this utility model is as follows: Before use, the test pen needs to be calibrated with buffer solutions of different pH values. Traditional buffer solutions are exposed to air during use and react with air, affecting the standard value. This technical solution can maintain the seal of the buffer solution during calibration. The buffer solution is injected into the buffer solution bottle 4 and then placed in the placement groove 12 to prevent displacement. Due to the downward pressure applied by the spring 51 to the lifting seat 6, the sealing plate 61 can cover the top opening of the buffer solution bottle 4. During calibration, the test pen is taken out from the clamping end of the support frame 3, and then the sealing plug 8 on the top of the corresponding buffer solution bottle 4 is inserted and removed. The test pen is inserted through the movable plate 7 and into the buffer solution bottle 4 until it contacts the buffer solution. During this process, since the diameter of the movable plate 7 is smaller than the groove 62 and the movable cylinder 71 is smaller than the through hole 63, the movable cylinder 71 can move inside the through hole 63. At the same time, the movable plate 7 always maintains the seal of the through hole 63. Therefore, during the calibration process, the test pen can shake with the movable plate 7, so that the measuring pen can fully contact the buffer solution and ensure the calibration effect.

[0052] When the buffer solution bottle 4 is not installed, the lifting seat 6 is at the lowest point of its stroke due to the thrust of the spring 51. At this time, the lifting seat 6 is restricted by the limiting plate 131. When installing the buffer solution bottle 4, the lifting seat 6 can be raised to make it higher than the height of the buffer solution bottle 4. After the bottom of the buffer solution bottle 4 is placed into the placement slot 12, the lifting seat 6 can automatically align the top and cover the seal.

[0053] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A button-type pH meter, comprising a worktable (1), characterized in that: The workbench (1) has a track (11) arranged laterally on the rear side of its upper surface. The track (11) has a T-shaped cross section. A support frame (3) is slidably installed on the surface of the track (11). A test pen is installed at the end of the support frame (3). The workbench (1) has symmetrical placement slots (12) on the side of the surface near the track (11). Buffer bottles (4) are placed inside the two placement slots (12). Two columns (13) are vertically arranged on the surface of the workbench (1) and are placed parallel between the two placement slots (12). Lifting seats (6) are slidably installed on the surfaces of the two columns (13). Sealing plates (61) are symmetrically arranged on both sides of the lifting seats (6). The sealing plates (61) are used to seal the top of the buffer bottle (4). A through hole (63) is opened in the center of the surface of the sealing plate (61).

2. A button-type pH meter according to claim 1, characterized in that: A button controller (2) is installed on one side of the workbench (1), and the test pen held at the end of the support frame (3) is connected to the button controller (2) via a data cable.

3. A button-type pH meter according to claim 1, characterized in that: The sealing plate (61) has a groove (62) on its upper surface, and a movable plate (7) is placed inside the sealing plate (61). The diameter of the movable plate (7) is smaller than that of the groove (62).

4. A button-type pH meter according to claim 3, characterized in that: The bottom of the movable plate (7) is provided with a movable cylinder (71), which passes through the through hole (63). During calibration, the test pen passes through the movable plate (7) and the movable cylinder (71). The diameter of the movable cylinder (71) is smaller than that of the through hole (63).

5. A button-type pH meter according to claim 4, characterized in that: The two buffer bottles (4) are filled with buffer solutions of different specifications. The movable cylinder (71) slides along the inner wall of the through hole (63), and the movable plate (7) always covers the through hole (63).

6. A button-type pH meter according to claim 5, characterized in that: A sealing plug (8) is installed on the top of the movable cylinder (71), which is used to maintain a seal on the movable plate (7) when not in use.

7. A button-type pH meter according to claim 1, characterized in that: A limiting nut (5) is screwed onto the surface of the column (13), and a spring (51) is sleeved on the surface of the column (13). The spring (51) is placed between the lifting seat (6) and the limiting nut (5), and the two springs (51) exert a downward thrust on the lifting seat (6).

8. A button-type pH meter according to claim 7, characterized in that: A limiting plate (131) is provided below the surface of the column (13), and the limiting plate (131) is used to limit the bottom of the lifting seat (6) when the buffer bottle (4) is not installed.

Images