Rapid dissolved oxygen meter calibration fixture

Abstract

The utility model discloses a quick dissolved oxygen determination appearance calibrating clamp belongs to the related field of measuring instrument, including slide and detection rod, the outside sleeve of slide is equipped with the sleeve, and the top outside fixed connection of slide has clamping assembly, stable component, the stable component includes sucking disc, when the determination appearance is in the calibration, through clamping assembly, can make in the calibration operation process not to need the operation personnel to hold the detection rod and limit, can realize the labor -saving clamping of detection rod can make the liberation of both hands in the calibration process, improve the convenience in the calibration process, and also can support the detection rod and limit at different heights, make the calibration operation process more flexible, and through stable component, can make in the detection rod clamping erection process, can make the detection platform more stable, avoid the connection line of main part and detection rod to drag in the correction process, cause the dumping of clamping assembly, further improved the stable erection of detection rod.

Description

Technical Field

[0001] This utility model relates to the technical field of measuring instruments, specifically a calibration fixture for a rapid dissolved oxygen analyzer. Background Technology

[0002] Nucleotides generally refer to linear polynucleotide fragments consisting of 2 to 10 nucleotide residues linked by phosphodiester bonds. However, there is no strict definition of the number of nucleotide residues when using this term. In many literatures, polynucleotide molecules containing 30 or more nucleotide residues are also called oligonucleotides. Dissolved oxygen meters are needed for detection. These devices measure dissolved oxygen in water. The working principle is that oxygen permeates through a membrane and is reduced by the working electrode, generating a diffusion current proportional to the oxygen concentration. By measuring this current, the concentration of dissolved oxygen in the water is obtained.

[0003] The existing dissolved oxygen analyzer technology has the following problems: Existing dissolved oxygen analyzers require calibration during use. The calibration process is cumbersome and time-consuming. During the calibration process, the operator needs to hold the measuring instrument with one hand and operate the buttons on the main body of the instrument with the other hand. This process does not allow the operator to free their hands and increases the difficulty of calibration.

[0004] Therefore, this utility model provides a calibration fixture for a rapid dissolved oxygen meter to solve the above problems. Utility Model Content

[0005] This invention provides a calibration fixture for a rapid dissolved oxygen meter, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a sliding rod and a detection rod. A sleeve is fitted around the sliding rod, and a clamping assembly is fixedly connected to the top of the sliding rod. A stabilizing assembly includes a suction cup fixedly connected to the bottom of the sleeve. An air outlet pipe is fixedly connected to the top left side of the suction cup, and an exhaust pipe is fixedly connected to the side of the air outlet pipe. A cylinder is fixedly connected to the top of the air outlet pipe, and a piston rod is slidably connected inside the cylinder. A first one-way valve and a second one-way valve are respectively installed inside the air outlet pipe and the exhaust pipe. During use, the entire detection process can be controlled by combining a mother clamp, a daughter clamp, a sleeve, and a clamping block. The clamping and limiting mechanism of the rod allows the testing rod to be suspended in the air, facilitating calibration and freeing up the hands for increased convenience. During setup, the piston rod is pulled to slide upwards inside the cylinder, opening the first one-way valve and allowing air from inside the suction cup to enter the cylinder through the exhaust pipe. Pressing the piston rod downwards opens the second one-way valve, expelling air from inside the cylinder through the exhaust pipe. This cycle repeats, creating a vacuum inside the suction cup, which then firmly adheres to the worktable. This ensures stable support for the testing rod even if it is dragged by the connecting cable between the testing instrument and the main body, improving the overall stability of the device.

[0007] As a preferred technical solution of this application, the clamping assembly includes a female clamping plate, which is fixedly connected to the outside of the top end of the slide rod. A male clamping plate is rotatably connected to the outside of the female clamping plate. A sleeve is fixedly connected to the outside of the female clamping plate, and a locking block is fixedly connected to the outside of the male clamping plate. By pressing the male clamping plate to move closer to the female clamping plate, the locking block can be locked inside the sleeve, and the male and female clamping plates can simultaneously clamp the detection rod together.

[0008] As a preferred technical solution of this application, multiple ribs are fixedly connected inside both the mother clamp and the daughter clamp, and a lever is fixedly connected to the outside of the daughter clamp. The lever can be used to apply force to make the locking block disengage from the sleeve, thereby realizing the rapid release of the detection rod from the limit.

[0009] As a preferred technical solution of this application, the slide bar is provided with uniformly distributed insertion holes on its outer side, and the sleeve is connected to an insertion rod by internal thread. The insertion rod can be locked into different insertion holes by rotation, so that the slide bar is limited after sliding up and down inside the sleeve.

[0010] As a preferred technical solution of this application, a pressure relief valve is provided at the top right side of the suction cup. The pressure relief valve allows external air to quickly enter the interior of the suction cup, thereby enabling the disassembly of the entire device.

[0011] As a preferred technical solution of this application, the first check valve and the second check valve open and close alternately, the first check valve and the second check valve are of the same model, and the opening and closing directions of the first check valve and the second check valve are opposite.

[0012] As a preferred technical solution of this application, a limiting ring is provided on the outside of the cylinder. The limiting ring is fixedly connected to the outside of the sleeve, and the cylinder can be limited and supported by the limiting ring.

[0013] The beneficial effects of this utility model are as follows: When the measuring instrument is calibrated, the clamping component eliminates the need for operators to hold the test rod in their hands during the calibration process, enabling labor-saving clamping of the test rod and freeing up the hands during calibration, thus improving the convenience of the calibration process. It also provides support and limitation for the test rod at different heights, making the calibration process more flexible. Furthermore, the stabilizing component ensures greater stability on the testing platform during the clamping and setting of the test rod, preventing the connecting line between the main body and the test rod from being dragged during the calibration process, which could cause the clamping component to tip over, further improving the stable setting of the test rod. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the cross-section of this utility model;

[0016] Figure 3 A schematic diagram of the unfolded clamping assembly in this utility model;

[0017] Figure 4 A schematic diagram of the internal structure of the sleeve in this utility model;

[0018] Figure 5 This utility model contains a schematic diagram of the internal structure of the suction cup.

[0019] In the picture:

[0020] 1. Detection rod; 2. Female clamp plate; 3. Slide rod; 4. Sleeve; 5. Suction cup; 6. Cylinder; 7. Limiting ring; 8. Insertion hole; 9. Insertion rod; 10. Female clamp plate; 11. Compression sleeve; 12. Compression block; 13. Pressure relief valve; 14. Exhaust pipe; 15. Piston rod; 16. First one-way valve; 17. Exhaust pipe; 18. Second one-way valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a calibration fixture for a rapid dissolved oxygen meter, such as... Figure 1-5 As shown, the calibration fixture for the rapid dissolved oxygen analyzer includes a slide bar 3 and a detection rod 1. A sleeve 4 is fitted around the slide bar 3, and a clamping assembly is fixedly connected to the top of the slide bar 3. A stabilizing assembly includes a suction cup 5, which is fixedly connected to the bottom of the sleeve 4. An outlet pipe 14 is fixedly connected to the top left side of the suction cup 5, and an exhaust pipe 17 is fixedly connected to the side of the outlet pipe 14. A cylinder 6 is fixedly connected to the top of the outlet pipe 14, and a piston rod 15 is slidably connected inside the cylinder 6. A first one-way valve 16 and a second one-way valve 18 are respectively installed inside the outlet pipe 14 and the exhaust pipe 17. The calibration of the analyzer is performed within this assembly. During calibration, the clamping assembly eliminates the need for operators to hold the test rod 1 by hand, allowing for effortless clamping and freeing up hands, thus improving convenience. It also provides support and restraint at different heights for the test rod 1, enhancing flexibility during calibration. Furthermore, the stabilizing assembly ensures stability on the testing platform during clamping and setting up the test rod 1, preventing the connecting cable between the main body and the test rod 1 from being dragged and causing the clamping assembly to tip over, further improving the stability of the test rod 1.

[0023] The clamping assembly includes a female clamping plate 2, which is fixedly connected to the outside of the top of the slide rod 3. A male clamping plate 10 is rotatably connected to the outside of the female clamping plate 2. A sleeve 11 is fixedly connected to the outside of the female clamping plate 2. A locking block 12 is fixedly connected to the outside of the male clamping plate 10. By pressing the male clamping plate 10 to move closer to the female clamping plate 2, the locking block 12 can be locked inside the sleeve 11. At the same time, the male clamping plate 10 and the female clamping plate 2 can clamp the detection rod 1. Multiple ribs are fixedly connected inside the female clamping plate 2 and the male clamping plate 10. A lever is fixedly connected to the outside of the male clamping plate 10. The lever can be used to apply force to make the locking block 12 disengage from the sleeve 11, thereby quickly releasing the limit on the detection rod 1.

[0024] The slide bar 3 has evenly spaced insertion holes 8 on its exterior. The sleeve 4 has a threaded connection to an insertion rod 9. The insertion rod 9 can be locked into different insertion holes 8 by rotation, so that the slide bar 3 is limited after sliding and lifting inside the sleeve 4. The suction cup 5 has a pressure relief valve 13 at the top right side. The pressure relief valve 13 allows external air to quickly enter the suction cup 5, enabling the disassembly of the entire device.

[0025] The first one-way valve 16 and the second one-way valve 18 open and close alternately. The first one-way valve 16 and the second one-way valve 18 are of the same model. The opening and closing directions of the first one-way valve 16 and the second one-way valve 18 are opposite. A limiting ring 7 is sleeved on the outside of the cylinder 6. The limiting ring 7 is fixedly connected to the outside of the sleeve 4. The limiting ring 7 can be used to limit the setting of the cylinder 6.

[0026] When using this rapid dissolved oxygen analyzer calibration fixture, the combination of the mother clamp 2, daughter clamp 10, ferrule 11, and clamping block 12 can clamp and limit the entire detection rod 1, suspending it in the air for easy calibration and freeing up the hands for greater convenience. During setup, the piston rod 15 is pulled to slide upward inside the cylinder 6, opening the first one-way valve 16. Air from inside the suction cup 5 enters the cylinder 6 through the exhaust pipe 14. Then, pressing the piston rod 15 downward opens the second one-way valve 18, allowing air from inside the cylinder 6 to be discharged through the exhaust pipe 17. This cycle repeats, drawing air from inside the suction cup 5 to create a vacuum, firmly attaching the suction cup 5 to the worktable. This ensures stable support for the detection rod 1 even when dragged by the connecting cable between the detection rod and the main body of the instrument, improving the overall stability of the device.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A calibration fixture for a rapid dissolved oxygen meter, comprising a slide bar (3) and a detection bar (1), characterized in that: The slide rod (3) is sleeved on the outside of the sleeve (4), and a clamping assembly is fixedly connected to the top of the slide rod (3). The stabilizing component includes a suction cup (5), which is fixedly connected to the bottom of the sleeve (4). An air outlet pipe (14) is fixedly connected to the top left side of the suction cup (5), and an exhaust pipe (17) is fixedly connected to the side of the air outlet pipe (14). A cylinder (6) is fixedly connected to the top of the air outlet pipe (14), and a piston rod (15) is slidably connected inside the cylinder (6). A first one-way valve (16) and a second one-way valve (18) are respectively provided inside the air outlet pipe (14) and the exhaust pipe (17).

2. The calibration fixture for the rapid dissolved oxygen analyzer according to claim 1, characterized in that: The clamping assembly includes a female clamping plate (2), which is fixedly connected to the outside of the top end of the slide rod (3). A female clamping plate (10) is rotatably connected to the outside of the female clamping plate (2). A sleeve (11) is fixedly connected to the outside of the female clamping plate (2), and a locking block (12) is fixedly connected to the outside of the female clamping plate (10).

3. The calibration fixture for the rapid dissolved oxygen analyzer according to claim 2, characterized in that: Both the mother clamp (2) and the daughter clamp (10) are fixedly connected with multiple ribs inside, and the daughter clamp (10) is fixedly connected with a lever outside.

4. The calibration fixture for the rapid dissolved oxygen analyzer according to claim 1, characterized in that: The slide bar (3) has uniformly opened insertion holes (8) on its outside, and the sleeve (4) has an insertion rod (9) threadedly connected inside.

5. The calibration fixture for the rapid dissolved oxygen analyzer according to claim 1, characterized in that: A pressure relief valve (13) is provided at the top right side of the suction cup (5).

6. The calibration fixture for the rapid dissolved oxygen analyzer according to claim 1, characterized in that: The first check valve (16) and the second check valve (18) open and close alternately, and the first check valve (16) and the second check valve (18) belong to the same model.

7. The calibration fixture for the rapid dissolved oxygen analyzer according to claim 1, characterized in that: A limiting ring (7) is fitted around the outside of the cylinder (6), and the limiting ring (7) is fixedly connected to the outside of the sleeve (4).

Images