Titrator test tube clamping device

Abstract

The utility model discloses a titrator test tube clamping device which comprises a bottom plate, a round block is fixedly connected to the center of the upper surface of the bottom plate, a sleeve plate is sleeved on the outer wall of the round block, small round holes are formed in the outer ring wall of the surface of a round hole plate, large round holes are formed in the inner ring wall of the surface of the round hole plate, and side rods are sleeved on two sides of the round hole plate. The sleeve plate is in clearance fit with the side rods, and the lower surfaces of the side rods are fixedly connected with the two sides of the upper surface of the sleeve plate. When a test tube is placed, clamping can be completed without exerting force, the whole test tube clamping device further has a rotating function and a positioning structure for limiting rotation, the positioning structure can limit the rotation, it is ensured that the test tube cannot exceed the safety range in the rotating process, and therefore the test tube is prevented from sliding out of the round hole plate, and the experiment safety is improved; multiple functions are integrated in one device, so that the operation becomes simple and clear, and different types of test tubes can be separately stored by utilizing the round hole plate, so that the space is more effectively utilized.

Description

Technical Field

[0001] This utility model relates to the field of titrator technology, specifically to a test tube clamping device for a titrator. Background Technology

[0002] A titrator is a commonly used chemical analysis instrument in laboratories, primarily used for titration experiments in quantitative chemical analysis. It determines whether the titrant has reached its chemical endpoint by controlling the addition of the titrant and using appropriate indicators. Titrators have a wide range of applications, used in various chemical and biochemical fields, such as food, pharmaceuticals, environment, and biofuels. Titrator tubes are typically made of glass, with inner and outer layers, exhibiting chemical inertness and high thermal stability. Their uniform surface and ease of cleaning ensure accurate experimental results. When using a titrator, the test tubes are usually held in place by test tube clamps. These clamps play a crucial role in holding the test tubes during experiments; too light a clamping force may cause the test tube to fall, while too heavy a force may cause it to break. Therefore, appropriate clamping force is essential. To avoid these problems, we propose a titrator test tube clamping device that adjusts the position and angle of the clamps or test tubes to ensure proper holding. Utility Model Content

[0003] The purpose of this invention is to provide a test tube clamping device for a titrator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a titrator test tube clamping device, comprising a base plate, a circular block fixedly connected to the center of the upper surface of the base plate, a sleeve plate sleeved on the outer wall of the circular block, and the sleeve plate and the circular block being rotatably connected, a groove being annularly provided on the lower surface of the sleeve plate, a lifting structure being provided at the center of the upper surface of the sleeve plate, a perforated plate sleeved on the top of the lifting structure, a small circular hole being provided on the outer ring wall of the perforated plate, a large circular hole being provided on the inner ring wall of the perforated plate, side rods being sleeved on both sides of the perforated plate, and the sleeve plate and the side rods being clearance-fitted, the lower surface of the side rods being fixedly connected to both sides of the upper surface of the sleeve plate.

[0005] Preferably, the lifting structure includes an internally threaded rod, the lower surface of which is fixedly connected to the center of the upper surface of the sleeve plate, an externally threaded rod being threadedly connected to the inner cavity of the internally threaded rod, a rotating block being fixedly connected to the top end of the externally threaded rod, the outer wall of the rotating block being rotatably connected to the center of the circular hole plate, and a rotating handle being fixedly connected to the center of the upper surface of the rotating block.

[0006] Preferably, it further includes a positioning structure, which is fixedly connected to one side of the upper surface of the base plate, and the upper surface of the positioning structure is in contact with the lower surface of the sleeve plate.

[0007] Preferably, the positioning structure includes a cylindrical block, the lower surface of which is fixedly connected to one side of the upper surface of the base plate. A compression spring is fixedly connected to the inner cavity of the cylindrical block, and a locking rod is fixedly connected to the other end of the compression spring. Both ends of the locking rod penetrate the side wall of the cylindrical block and are clearance-fitted. A locking block is fixedly connected to the center of the upper surface of the locking rod. The side wall of the locking block is clearance-fitted to the inner wall of the cylindrical block, and the upper surface of the locking block engages with the groove on the lower surface of the sleeve plate.

[0008] Preferably, a top block is fixedly connected to the upper surface end of the side rod.

[0009] Preferably, a sponge layer is glued to the center of the upper surface of the sleeve, and the center of the sponge layer is in contact with the outer wall of the internal thread rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: When using a titrator, a perforated plate for placing test tubes is pre-set on one side of the titrator. The surface of the perforated plate has two types of holes to accommodate test tubes of different sizes. At the same time, a lifting structure is set at the bottom of the perforated plate to raise and lower the plate, controlling its height to accommodate different test tube lengths. When placing test tubes, clamping can be completed without applying force. Moreover, the whole device also has a rotation function and a positioning structure to limit the rotation. The positioning structure can limit the rotation to ensure that the test tubes do not exceed the safe range during rotation, thereby preventing the test tubes from sliding out of the perforated plate and improving the safety of the experiment. Multiple functions are integrated into one device, making operation simple and clear. Using the perforated plate, different types of test tubes can be stored separately, making more efficient use of space. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 for Figure 1 3D detail of the lifting structure;

[0013] Figure 3 for Figure 1 Detailed structural diagram of the middle sleeve plate;

[0014] Figure 4 for Figure 1 Detailed structural diagram of the positioning structure;

[0015] In the diagram: 1. Base plate; 2. Circular block; 3. Sleeve plate; 4. Side rod; 5. Circular hole plate; 6. Top block; 7. Lifting structure; 71. Internal threaded rod; 72. External threaded rod; 73. Rotating block; 74. Rotary handle; 8. Positioning structure; 81. Cylindrical block; 82. Compression spring; 83. Locking rod; 84. Locking block; 9. Sponge layer. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 This utility model provides a test tube clamping device for a titrator, including a base plate 1. A circular block 2 is fixedly connected to the center of the upper surface of the base plate 1. A sleeve plate 3 is sleeved on the outer wall of the circular block 2, and the sleeve plate 3 and the circular block 2 are rotatably connected. A groove is provided in the lower surface of the sleeve plate 3. A lifting structure 7 is provided at the center of the upper surface of the sleeve plate 3. A circular hole plate 5 is sleeved on the top of the lifting structure 7. A small circular hole is provided on the outer ring wall of the surface of the circular hole plate 5, and a large circular hole is provided on the inner ring wall of the surface of the circular hole plate 5. Side rods 4 are sleeved on both sides of the circular hole plate 5, and the sleeve plate 3 and the side rods 4 are clearance fit. The lower surface of the side rods 4 is fixedly connected to both sides of the upper surface of the sleeve plate 3.

[0018] The lifting structure 7 includes an internal threaded rod 71, the lower surface of which is fixedly connected to the center of the upper surface of the sleeve plate 3. An external threaded rod 72 is threadedly connected to the inner cavity of the internal threaded rod 71. A rotating block 73 is fixedly connected to the top of the external threaded rod 72. The outer wall of the rotating block 73 is rotatably connected to the center of the circular hole plate 5. A handle 74 is fixedly connected to the center of the upper surface of the rotating block 73.

[0019] It also includes a positioning structure 8, which is fixedly connected to one side of the upper surface of the base plate 1, and the upper surface of the positioning structure 8 is in contact with the lower surface of the sleeve plate 3.

[0020] The positioning structure 8 includes a cylindrical block 81. The lower surface of the cylindrical block 81 is fixedly connected to one side of the upper surface of the base plate 1. A compression spring 82 is fixedly connected to the inner cavity of the cylindrical block 81. A locking rod 83 is fixedly connected to the other end of the compression spring 82. Both ends of the locking rod 8 penetrate the side wall of the cylindrical block 81 and are in clearance fit. A locking block 84 is fixedly connected to the center of the upper surface of the locking rod 8. The side wall of the locking block 84 is in clearance fit with the inner wall of the cylindrical block 81. The upper surface of the locking block 84 is engaged with the groove on the lower surface of the sleeve plate 3.

[0021] A top block 6 is fixedly connected to the upper end of the side rod 4.

[0022] A sponge layer 9 is glued to the center of the upper surface of the sleeve plate 3, and the center of the sponge layer 9 is in contact with the outer wall of the internal thread rod 71.

[0023] Working principle: The test tube mainly serves to hold the liquid to be tested and allows the liquid to react during the titration process. When using the titrator, a suitable test tube must first be selected. Before testing, the base plate 1 is placed on one side of the titrator for preparation. A circular block 2 is set on the surface of the base plate 1, and a sleeve plate 3 is fitted onto the outer wall of the circular block 2. The sleeve plate 3 can rotate on the outer wall of the circular block 2. Simultaneously, a positioning structure 8 is set on one side of the base plate 1 for positioning, which is fixed to one side of the surface of the base plate 1 by a cylindrical block 81. A compression spring 82 is set inside the cylindrical block 81. The other side of the compression spring 82... A locking rod 83 is fixed at one end, and both ends of the locking rod 83 pass through the cylindrical block 81, while having a certain vertical movement clearance. When the locking rod 83 is pulled down, the compression spring 82 will compress, causing the top locking block 84 to retract into the cylindrical block 81, thus canceling the engagement with the sleeve plate 3. The bottom of the sleeve plate 3 has an annular groove to facilitate engagement and limiting with the locking block 84. When the locking rod 83 is pulled down, the sleeve plate 3 can be rotated. When released, the locking block 84 will fit against the sleeve plate 3 for positioning and limiting. A lifting structure 7 is provided at the center of the surface of the sleeve plate 3, and a circular perforated plate 5 is sleeved near the top of the lifting structure 7. The surface of the plate 5 is dotted with circular holes. Small circular holes are arranged in an outer ring, and large circular holes are arranged in the inner ring wall near the center to accommodate different test tubes. The height of the circular plate 5 is controlled by a lifting structure 7 to accommodate the length of the test tubes. The lifting structure 7 is fixed to the center of the upper surface of the sleeve plate 3 by an internal thread rod 71. The internal thread rod 71 has threads inside and is threaded to an external thread rod 72. A rotating block 73 is fixed to the top of the external thread rod 72. The rotating block 73 is a disc with a groove in the center and is sleeved at the center of the circular plate 5. The rotating block 73 slides between the center of the circular plate 5 and the rotating block 73. Next, side rods 4 are set on both sides of the orifice plate 5 to cooperate with the lifting structure 7 for raising and lowering. By rotating the top handle 74, the external thread rod 72 rotates in the inner cavity of the internal thread rod 71, and rises or falls by means of the thread characteristics. The two sides are kept stable by the side rods 4, so that the orifice plate 5 can be raised and lowered. Select the appropriate test tube size and material according to the properties and concentration of the liquid to be tested. When the test tube is inserted into the orifice plate 5 for clamping, a sponge layer 9 is also set at the bottom to protect the bottom of the test tube to avoid breakage. Perform the titration operation according to the experimental steps, observe the reaction in the test tube, and record the experimental data.

[0024] 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. A test tube clamping device for a titrator, characterized in that: Includes a base plate (1), a round block (2) is fixedly connected to the center of the upper surface of the base plate (1), a sleeve plate (3) is sleeved on the outer wall of the round block (2), and the sleeve plate (3) and the round block (2) are rotatably connected, a groove is provided on the lower surface of the sleeve plate (3), a lifting structure (7) is provided at the center of the upper surface of the sleeve plate (3), a round hole plate (5) is sleeved on the top of the lifting structure (7), a small round hole is provided on the outer ring wall of the surface of the round hole plate (5), a large round hole is provided on the inner ring wall of the surface of the round hole plate (5), side rods (4) are sleeved on both sides of the round hole plate (5), and the sleeve plate (3) and the side rods (4) are clearance fit, and the lower surface of the side rods (4) is fixedly connected to both sides of the upper surface of the sleeve plate (3).

2. The titrator test tube clamping device according to claim 1, characterized in that: The lifting structure (7) includes an internal threaded rod (71), the lower surface of which is fixedly connected to the center of the upper surface of the sleeve plate (3), the inner cavity of which is threadedly connected to an external threaded rod (72), the top end of which is fixedly connected to a rotating block (73), the outer wall of which is rotatably connected to the center of the circular hole plate (5), and the center of the upper surface of which is fixedly connected to a handle (74).

3. The titrator test tube clamping device according to claim 1, characterized in that: It also includes a positioning structure (8), which is fixedly connected to one side of the upper surface of the base plate (1), and the upper surface of the positioning structure (8) is in contact with the lower surface of the sleeve plate (3).

4. The titrator test tube clamping device according to claim 3, characterized in that: The positioning structure (8) includes a cylindrical block (81), the lower surface of which is fixedly connected to one side of the upper surface of the base plate (1), a compression spring (82) is fixedly connected to the inner cavity of the cylindrical block (81), and a locking rod (83) is fixedly connected to the other end of the compression spring (82). The two ends of the locking rod (8) penetrate the side wall of the cylindrical block (81) and are in clearance fit. A locking block (84) is fixedly connected to the center of the upper surface of the locking rod (8), and the side wall of the locking block (84) is in clearance fit with the inner wall of the cylindrical block (81). The upper surface of the locking block (84) is engaged with the groove on the lower surface of the sleeve plate (3).

5. The titrator test tube clamping device according to claim 1, characterized in that: A top block (6) is fixedly connected to the upper end of the side rod (4).

6. The titrator test tube clamping device according to claim 1, characterized in that: A sponge layer (9) is glued to the center of the upper surface of the sleeve (3), and the center of the sponge layer (9) is in contact with the outer wall of the internal thread rod (71).

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