A whole machine testing workbench for an acidimeter

Abstract

The utility model relates to the technical field of acidity meter calibration workbench, specifically discloses a kind of acidity meter whole machine calibration workbench, comprising: refrigeration constant-temperature tank main body, refrigeration constant-temperature tank main body is equipped with constant-temperature tank, constant-temperature tank is equipped with placing table, locking assembly is equipped between placing table and constant-temperature tank, locking assembly is locked release to placing table, placing table is equipped with solution container groove, clamping assembly is equipped in solution container groove, clamping assembly is fixed to solution container with clamping, the locking of placing table is realized by being equipped with locking assembly, completely replaces hand-held value and is released manpower, guarantees solution temperature constant, by setting up clamping assembly to realize stable clamping with elastic pre-tightening force self-adapting different diameter container, mutually cooperate to realize the stability of placing table and solution container, both solve the tediousness of hand-held and adjustment, also avoid the precision problem caused by displacement, shaking, greatly reduce labor intensity, improve calibration efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of pH meter calibration workbench, specifically a pH meter whole machine calibration workbench. Background Technology

[0002] As a key metrological instrument for measuring the acidity and alkalinity of solutions, the pH meter must be calibrated in strict accordance with metrological procedures. The core process is as follows: use 3-5 standard pH buffer solutions of different specifications, place the standard solutions in a constant temperature water bath to maintain a constant temperature, and only after the solution temperature has stabilized can the pH meter be calibrated and measured using the standard solutions. Whether the temperature is constant or not directly determines the accuracy of the calibration results.

[0003] The existing operating procedure requires technicians to manually hold at least three standard solution containers and maintain them next to the constant temperature bath for more than 30 minutes until the solution temperature stabilizes. During this time, the containers must be kept stable to prevent spillage or temperature fluctuations. This makes it impossible to perform other verification tasks simultaneously. Prolonged manual operation is not only physically demanding but also prone to causing container shaking due to hand fatigue, indirectly affecting the solution's temperature control and further increasing the risk of verification errors. This severely restricts the efficiency and convenience of pH meter verification. Therefore, we propose a pH meter whole-machine verification workbench. Utility Model Content

[0004] The purpose of this invention is to provide a pH meter calibration workbench to solve the problems mentioned in the background art regarding the existing operating procedures. Technicians need to manually hold at least three standard solution containers and maintain them next to the constant temperature bath for more than 30 minutes until the solution temperature is constant. During this period, the containers must be kept stable to avoid solution overflow or temperature fluctuations. Other calibration tasks cannot be carried out simultaneously. The long-term hand operation is not only labor-intensive, but may also cause the containers to shake due to hand fatigue, indirectly affecting the solution temperature control effect and further increasing the risk of calibration errors. This seriously restricts the efficiency and convenience of pH meter calibration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pH meter calibration workbench, comprising: a refrigerated constant temperature bath body, a constant temperature bath being provided on the refrigerated constant temperature bath body, a placement platform being provided on the constant temperature bath, a locking component being provided between the placement platform and the constant temperature bath, the locking component locking and releasing the placement platform, a solution container tank being provided on the placement platform, a clamping component being provided in the solution container tank, and the clamping component clamping and fixing the solution container.

[0006] The locking assembly includes a rotating groove formed on the inner wall of the thermostatic bath, an opening at the top of the inner wall of the thermostatic bath communicating with the rotating groove, a retraction groove formed on the inner wall of the thermostatic bath, a compression spring fixedly connected to the bottom of the retraction groove, a limiting rod inside the compression spring, the limiting rod penetrating the interior of the compression spring, and a locking block fixedly connected to the end of the limiting rod away from the retraction groove; it also includes:

[0007] The protrusion is fixedly connected to the outer ring of the placement platform. The protrusion can enter the rotating groove through the opening and slide along the rotating groove. The outer ring of the placement platform is also provided with a groove, which corresponds to the locking block and matches its size.

[0008] The clamping assembly includes a placement groove formed in the wall of the solution container tank. A spring sheet is fixedly connected to the inner wall of the placement groove. The other end of the spring sheet extends toward the center of the solution container tank and is fixedly connected to an abutment plate. The side of the abutment plate closest to the solution container is an arc-shaped surface.

[0009] The solution container tank is a standard solution container tank, with five sets of solution container tanks. Each solution container tank is equipped with four sets of clamping components. The four sets of clamping components are evenly distributed along the circumference of the tank wall, and the clamping components together enclose a clamping space that is compatible with the solution container.

[0010] Among them, the locking blocks and grooves are provided in three sets and are distributed at equal angles along the circumference of the constant temperature tank.

[0011] The locking block has rounded corners.

[0012] The edge of the abutment plate away from the spring sheet has a chamfer.

[0013] Two sets of handles are symmetrically fixed on the placement platform.

[0014] This utility model has at least the following beneficial effects:

[0015] In use, this utility model achieves three-point positioning through a locking component, which can be unlocked without tools, preventing displacement of the placement platform. It completely replaces manual operation, freeing up manpower and ensuring a constant solution temperature. The clamping component uses elastic pre-tightening force to adapt to containers of different diameters, achieving stable clamping. The two components work together to stabilize the placement platform and the solution container, solving the cumbersome manual operation and adjustment, and avoiding accuracy problems caused by displacement and shaking. It is perfectly suited for pH meter calibration scenarios with multiple container specifications, long-term constant temperature, and high precision requirements, significantly reducing labor intensity and improving calibration efficiency and accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the locking component of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the locking component of this utility model;

[0019] Figure 4 This is a schematic diagram of the placement platform of this utility model;

[0020] Figure 5 This is a bottom view of the placement platform of this utility model;

[0021] Figure 6 This is a schematic diagram of the clamping component of this utility model;

[0022] Figure 7 This is an enlarged schematic diagram of area A of this utility model.

[0023] In the diagram: 1. Main body of the refrigeration thermostatic bath; 2. Thermostatic bath; 3. Placement platform; 4. Locking assembly; 41. Rotating groove; 42. Opening; 43. Retraction groove; 44. Compression spring; 45. Limiting rod; 46. Locking block; 47. Protrusion; 48. Groove; 5. Solution container tank; 6. Clamping assembly; 61. Placement groove; 62. Spring plate; 63. Abutment plate; 7. Rounded corner; 8. Chamfer; 9. Handle. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Please see Figures 1 to 7 This utility model provides a technical solution: a pH meter calibration workbench, comprising: a refrigerated constant temperature bath body 1, a constant temperature bath 2 on the refrigerated constant temperature bath body 1, a placement platform 3 on the constant temperature bath 2, a locking component 4 between the placement platform 3 and the constant temperature bath 2, the locking component 4 locking and releasing the placement platform 3, a solution container slot 5 on the placement platform 3, and a clamping component 6 inside the solution container slot 5, the clamping component 6 clamping and fixing the solution container. The refrigerated constant temperature bath body 1 is a cuboid structure with an upward-opening constant temperature bath 2 at its top, and the placement platform 3 is detachably installed inside the constant temperature bath 2. The locking component 4 achieves precise locking and rapid release of the placement platform 3 within the constant temperature bath 2 through mechanical cooperation, avoiding displacement caused by vibration during calibration. The placement platform 3 has multiple solution container slots 5 for placing standard solution containers, and the clamping component 6 uses elastic pre-tightening force to stably clamp and fix the solution containers placed in the slots, preventing the containers from tipping over or shaking. During use, the solution container is stably placed by the placement platform 3, and the cooperation between the locking component 4 and the clamping component 6 ensures the stability of the equipment and the container during the verification process, solving the problems of high labor intensity and reduced accuracy caused by traditional hand-held operation.

[0027] The locking assembly 4 includes a rotating groove 41 formed in the inner wall of the constant temperature bath 2, an opening 42 at the top of the inner wall of the constant temperature bath 2 communicating with the rotating groove 41, a retraction groove 43 formed in the inner wall of the constant temperature bath 2, a compression spring 44 fixedly connected to the bottom of the retraction groove 43, a limiting rod 45 inside the compression spring 44, the limiting rod 45 penetrating the interior of the compression spring 44, and a locking block 46 fixedly connected to the end of the limiting rod 45 away from the retraction groove 43; it also includes a protrusion 47 fixedly connected to the outer ring of the placement platform 3, the protrusion 47 being able to enter the rotating groove 41 through the opening 42 and slide along the rotating groove 41, and a groove 48 formed on the outer ring of the placement platform 3, the groove 48 corresponding to and matching the size of the locking block 46. The rotating groove 41 extends circumferentially along the constant temperature bath 2, the height of the opening 42 is flush with the bottom of the rotating groove 41, and the two ends of the compression spring 44 are respectively in close contact with the bottom of the retraction groove 43 and the locking block 46. A protrusion 47 is welded and fixed to the outer ring of the placement platform 3. The protrusion 47 can enter the rotating groove 41 through the opening 42 and slide along the rotating groove 41. The shape and size of the groove 48 match the locking block 46. The cooperation between the rotating groove 41 and the protrusion 47 realizes the circumferential positioning of the worktable. The elastic locking structure of the compression spring 44 and the locking block 46 ensures that the worktable is stably fixed in the preset position. The limit rod 45 prevents the spring from deviating. The overall structure realizes the convenient operation of "place-rotate-automatic locking", which greatly improves the efficiency compared with traditional bolt fixing. In use, when locking is required, place the placement platform 3 into the constant temperature bath 2, allowing the protrusion 47 to enter the rotating groove 41 through the opening 42. Rotate the worktable clockwise to the preset position. During this process, the outer ring of the worktable presses against the locking block 46, causing its compression spring 44 to retract into the retraction groove 43. Once in place, the spring returns to its original position, pushing the locking block 46 into the groove 48. A 'click' sound indicates that it is in position. The three sets of locking blocks 46, evenly distributed at 120° angles, and the groove 48 form a three-point positioning system, achieving stable locking through spring force. When unlocking is required, rotate the worktable counterclockwise. The edge of the groove 48 contacts the rounded corner 7 at the end of the locking block 46. The rounded corner 7 converts the rotational force into radial thrust, causing the locking block 46 to retract its compression spring 44 into the retraction groove 43. After releasing the constraint, continue rotating until the protrusion 47 aligns with the opening 42, then lift the worktable to complete the unlocking. Through mechanical coordination, both locking stability and ease of operation are achieved.

[0028] The clamping assembly 6 includes a placement groove 61 formed in the wall of the solution container tank 5. A spring plate 62 is fixedly connected to the inner wall of the placement groove 61. The other end of the spring plate 62 extends towards the center of the solution container tank 5 and is fixedly connected to an abutment plate 63. The side of the abutment plate 63 closest to the solution container is curved. The spring plate 62 is welded and fixed to the inner wall of the placement groove 61. It is made of 65Mn spring steel with a thickness of 0.4-0.6mm. The other end of the spring plate 62 extends towards the center of the solution container tank 5 and is fixedly connected to the abutment plate 63 by rivets. The abutment plate 63 is made of food-grade PP material, and the curved surface has anti-slip texture. The 65Mn spring steel spring plate 62 provides stable clamping force. The curved surface and anti-slip texture ensure that containers of different diameters can be tightly clamped, preventing container tilting caused by vibration of the constant temperature bath 2. At the same time, the food-grade PP material prevents scratches on the outer wall of the container. In use, when the solution container is placed in the container, the outer wall of the container first contacts the chamfer 8 of the abutment plate 63 away from the edge of the spring plate 62. The beveled surface of the chamfer 8 forms a guide channel, allowing the container to slide into the solution container slot 5 without precise alignment. As the container moves down, its outer wall presses against the abutment plate 63, causing the spring plate 62 connected to the abutment plate 63 to retract into the placement slot 61. The spring plate 62 generates a reverse elastic preload due to deformation, making the arc-shaped surface of the abutment plate 63 close to the container tightly fit against the outer wall of the container. The clamping components 6 are evenly distributed along the circumference of the container slot wall, forming a uniform circumferential clamping space. The continuous elastic force of the spring plate 62 achieves stable clamping of containers of different diameters, preventing shaking or tilting. When the container is removed, pulling the container upwards overcomes the elastic force of the spring plate 62, and the spring plate 62 simultaneously resets, waiting for the next clamping. The elastic deformation of the spring plate 62 provides adaptive clamping force, and the conformability of the arc surface is combined with the clamping stability and ease of operation, which solves the problems of poor adaptability and unstable clamping of traditional fixing slots.

[0029] The solution container tank 5 is a standard solution container tank 5, and there are five sets of solution container tanks 5. Each solution container tank 5 is equipped with four sets of clamping components 6. The four sets of clamping components 6 are evenly distributed along the circumference of the tank wall of the solution container tank 5. The clamping components 6 together enclose a clamping space adapted to the solution container. The five evenly distributed solution container tanks 5 can hold multiple standard solutions at the same time, meeting the multi-concentration calibration requirements of the pH meter whole-machine verification. The four sets of symmetrical clamping components 6 form a circumferentially uniform clamping force, which improves the stability compared to a two-set clamping structure and avoids the problem of one-sided tilting of the container.

[0030] The locking blocks 46 and the grooves 48 are provided in three sets and are distributed at equal angles along the circumference of the constant temperature bath 2. The three sets of locking blocks 46 and the grooves 48 form a three-point positioning structure, which improves the stability by more than 2 times compared with a single set of locking. It effectively restricts the radial and circumferential displacement of the worktable. The locking blocks 46 made of hard alloy have excellent wear resistance and their service life is 3 times longer than that of ordinary steel parts.

[0031] The locking block 46 has rounded corners 7, the edges of which are polished. The design and polishing of the rounded corners 7 allow the locking block 46 to be smoothly squeezed into the retraction groove 43 when the worktable rotates, reducing frictional resistance and preventing jamming. The rounded corners 7 face the counterclockwise rotation direction. When the placement table 3 is rotated counterclockwise, the edge of the groove 48 contacts the rounded corners 7 of the locking block 46. The guiding action of the rounded corners 7 squeezes the locking block 46, causing the locking block 46 to compress the compression spring 44 and retract into the retraction groove 43, releasing the locking restriction on the placement table 3 so that the placement table 3 can be removed from the constant temperature bath 2.

[0032] The abutment plate 63 has a chamfer 8 on its edge away from the spring sheet 62. The chamfer 8 faces the opening of the solution container tank 5. When the solution container is placed into the solution container tank 5, the outer wall of the container first contacts the chamfer 8 of the abutment plate 63. The inclined surface of the chamfer 8 forms a guide channel, guiding the container to slide along the inclined surface into the space enclosed by the four sets of clamping components 6. It can be smoothly placed in without precise alignment, while avoiding scratching the outer wall of the container when placing or removing it.

[0033] In overall use, the placement platform 3 is placed in the constant temperature bath 2, allowing the protrusion 47 to enter the rotating groove 41 through the opening 42. Rotating clockwise to the preset position, the locking block 46 extends into the groove 48 under the action of the compression spring 44, completing a stable lock. At this time, various standard solution containers are guided into the groove through the chamfer 8 of the abutment plate 63 inside the solution container groove 5. The circumferentially distributed abutment plates 63 are squeezed, causing the spring plate 62 to deform and generate elastic force. The arc-shaped surface adheres to the outer wall of the container, achieving stable clamping. After the constant temperature bath 2 maintains a constant temperature, the solution is calibrated and measured. After calibration, the worktable is rotated counterclockwise. The edge of the groove 48 squeezes the locking block 46, causing it to retract into the retraction groove 43 to release the lock. Continue rotating until the protrusion 47 aligns with the opening 42, then lift the worktable to remove it. The reverse operation is used to remove the container. This entire process solves the problems of fatigue from traditional hand operation, container shaking, and cumbersome loading and unloading, achieving efficient and accurate calibration.

[0034] Example 2

[0035] In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that two sets of handles 9 are symmetrically fixedly connected to the placement platform 3. The handles 9 are designed to provide effective grip space, making it more convenient to pick up the placement platform 3. The symmetrically distributed handles 9 make the force balanced when moving the worktable containing multiple solution containers, avoiding solution spillage caused by tilting.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An entire set of pH meter verification workbench, comprising: The main body of the refrigeration constant temperature bath is characterized in that: a constant temperature bath is provided on the main body of the refrigeration constant temperature bath, a placement platform is provided on the constant temperature bath, a locking component is provided between the placement platform and the constant temperature bath, the locking component locks and releases the placement platform, a solution container tank is provided on the placement platform, a clamping component is provided in the solution container tank, and the clamping component clamps and fixes the solution container.

2. The complete set of verification workbench for acidimeter according to claim 1, characterized in that: The locking assembly includes a rotating groove formed on the inner wall of the constant temperature bath, an opening at the top of the inner wall of the constant temperature bath communicating with the rotating groove, a retraction groove formed on the inner wall of the constant temperature bath, a compression spring fixedly connected to the bottom of the retraction groove, a limiting rod provided inside the compression spring, the limiting rod penetrating the interior of the compression spring, and a locking block fixedly connected to the end of the limiting rod away from the retraction groove; it also includes: The protrusion is fixedly connected to the outer ring of the placement platform. The protrusion can enter the rotating groove through the opening and slide along the rotating groove. The outer ring of the placement platform is also provided with a groove, which corresponds to and matches the size of the locking block.

3. The complete verification workbench for acidimeter according to claim 1, characterized in that: The clamping assembly includes a placement groove formed in the wall of the solution container tank. A spring sheet is fixedly connected to the inner wall of the placement groove. The other end of the spring sheet extends toward the center of the solution container tank and is fixedly connected to an abutment plate. The side of the abutment plate closest to the solution container is an arc-shaped surface.

4. The complete set of verification workbench for acidimeter according to claim 1, characterized in that: The solution container tank is a standard solution container tank, and there are five sets of solution container tanks. Each solution container tank is equipped with four sets of clamping components. The four sets of clamping components are evenly distributed along the circumference of the tank wall. The clamping components together enclose a clamping space adapted to the solution container.

5. The complete set of testing worktable for acidity meter according to claim 2, characterized in that: The locking blocks and grooves are provided in three sets and are distributed at equal angles along the circumference of the constant temperature tank.

6. The complete set of verification workbench for acidimeter according to claim 2, characterized in that: The locking block has rounded corners.

7. The complete set of testing worktable for acidity meter according to claim 3, characterized in that: The edge of the abutment plate away from the spring sheet is chamfered.

8. The p H meter complete verification station of claim 1 wherein: Two sets of handles are symmetrically fixedly connected to the placement platform.

Images