Karl Fischer reagent rapid sampling device

Abstract

The utility model discloses a Karl Fischer reagent rapid sampling device which comprises a sampling barrel and a moving frame, a pull rod is connected in the sampling barrel in a sliding and sealing mode, two threaded rods are installed on the sampling barrel, a central gear and two side gears are installed on the moving frame in a rotating mode, the central gear is connected with the two side gears in a meshed mode, and the central gear is connected with the two side gears in a meshed mode. The side gear is in threaded connection with the threaded rod, two clamping blocks are hinged to the pull rod and symmetrically arranged, and two clamping grooves are formed in the lower portion of the center gear. Through the matching arrangement of the clamping block and the clamping groove, the central gear can be arranged at a specified position, and when the clamping block moves upwards and is inserted into the clamping groove during extraction, a specified numerical value is reached for sampling, so that a worker does not need to extract slowly, and the sampling speed is increased; through cooperative arrangement of a central gear and a side gear, after a clamping block is clamped into a clamping groove, the central gear drives the side gear to be meshed with a threaded rod, so that a pull rod can be pulled upwards by a certain distance through the clamping block, and the purpose of rapid and accurate sampling is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of rapid sampling devices for Karl Fischer reagents, and in particular to a rapid sampling device for Karl Fischer reagents. Background Technology

[0002] Karl Fischer reagent is a chemical reagent mainly used for moisture testing. The reagent itself is not very stable and needs to be stored in brown, light-proof glass bottles.

[0003] Existing Karl Fischer reagents require sampling and testing after processing to ensure their quality. However, most existing sampling equipment uses manual pipettes, which requires staff to slow down the extraction speed when the specified mark is reached, resulting in low sampling efficiency. Therefore, a rapid sampling device for Karl Fischer reagents needs to be designed. Utility Model Content

[0004] Therefore, it is necessary to provide a rapid sampling device for Karl Fischer reagent to address the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides a rapid sampling device for Karl Fischer reagent, comprising a sampling cylinder and a moving frame. A pull rod is slidably and sealed inside the sampling cylinder. Two threaded rods are installed on the sampling cylinder. A central gear and two side gears are rotatably installed on the moving frame. The central gear and the side gears are meshed together. The side gears are threadedly connected to the threaded rods. Two locking blocks are hinged to the pull rod and are symmetrically arranged. Two locking slots are provided below the central gear. The locking blocks are fitted into the locking slots. The two locking blocks are connected by an elastic rope. An ejection mechanism is installed on the central gear.

[0006] Preferably, the ejection mechanism includes a through groove, which is located on the central gear and communicates with two locking blocks. A pressing block and two squeezing blocks are slidably engaged in the through groove, and the squeezing blocks are configured to cooperate with the locking groove.

[0007] Preferably, the lower pressing block and the two extrusion blocks are all provided with chamfers.

[0008] Preferably, the block is provided with a limiting block.

[0009] Preferably, the top of the card block is provided with a wear-resistant block.

[0010] Preferably, a rotating block is rotatably mounted on the pull rod, and a locking block is mounted on the rotating block.

[0011] Compared with existing technologies, this technical solution has at least one of the following beneficial effects:

[0012] 1. By using the combination of the card block and the card slot, the central gear can be set in a designated position. When the card block moves up and inserts into the card slot during extraction, the sampling will reach the specified value, so the staff does not have to extract slowly, thus speeding up the sampling process.

[0013] 2. Through the cooperation of the central gear and the side gear, after the block is inserted into the slot, the central gear drives the side gear to mesh with the threaded rod, so that the pull rod can be pulled upward a certain distance through the block, thereby achieving the purpose of fast and accurate sampling. Attached Figure Description

[0014] Figure 1 This is a front sectional view of an embodiment of the present invention;

[0015] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a perspective view of an embodiment of the present utility model;

[0017] In the diagram, 1. Sampling cylinder; 2. Moving frame; 3. Pull rod; 4. Threaded rod; 5. Central gear; 6. Side gear; 7. Locking block; 8. Locking groove; 9. Elastic rope; 10. Through groove; 11. Lowering block; 12. Extrusion block; 13. Limiting block; 14. Wear-resistant block; 15. Rotating block. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] Please see Figures 1 to 3 This application provides a Karl Fischer reagent rapid sampling device, including a sampling cylinder 1 and a moving frame 2. A pull rod 3 is rotatably and slidably sealed inside the sampling cylinder 1. Two threaded rods 4 are installed on the sampling cylinder 1, with opposite threads. A central gear 5 and two side gears 6 are rotatably installed on the moving frame 2. The central gear 5 and the two side gears 6 are meshed. The side gears 6 are threadedly connected to the threaded rods 4. Two locking blocks 7 are hinged on the pull rod 3 and are symmetrically arranged. Two slots 8 are provided below the central gear 5. The locking blocks 7 are matched with the slots 8. The two locking blocks 7 are connected by an elastic rope 9. An ejection mechanism is installed on the central gear 5.

[0020] In this embodiment, the two locking blocks 7 are connected by an elastic rope 9, so that after they are locked into the locking slot 8, the locking block 7 is kept in a vertical state by the limiting of the locking slot 8 and the pulling of the elastic rope 9. Therefore, before sampling, the locking block 7 can be locked into the locking slot 8, and the pull rod 3 can be moved to the desired extraction value. The distance between the moving frame 2 and the pull rod 3 is the length of the locking block 7 itself. Then, the locking block 7 is separated from the locking slot 8 by the push-out mechanism, and the moving frame 2 is moved down a certain distance by the central gear 5. During the sampling process, the pull rod 3 can be quickly pulled up to perform sampling. When the pull rod 3 moves to abut against the moving frame 2, the extraction value is about to be reached. Then the locking block 7 is locked into the locking slot 8, and the central gear on the moving frame 2 is rotated. Gear 5 rotates, causing gears 6 on both sides to rotate together. Through the threaded connection between the side gears 6 and the threaded rod 4, the moving frame 2 can be slowly moved upward for final sampling, thus enabling fast and accurate sampling. The purpose of setting up the moving frame 2 is that after the central gear 5 rotates and moves the moving frame 2 slowly upward, pulling the pull rod 3 to the specified value, subsequent sampling can be performed by moving the moving frame 2 to this point. Compared with manual slow extraction, it achieves fast sampling and avoids over-extraction. After the locking block 7 is engaged, it will rotate with the central gear 5. Since the bottom of the pull rod 3 is mostly sealed with rubber, the pull rod 3 can rotate with the locking block 7. The locking block 7 is preferably made of hard metal material.

[0021] In some embodiments, to facilitate the separation of the locking block 7 from the locking slot 8, an ejection mechanism is provided, including a through groove 10. The through groove 10 is located on the central gear 5 and communicates with the two locking blocks 7. A pressing block 11 and two squeezing blocks 12 are slidably engaged within the through groove 10, and the squeezing blocks 12 are configured to cooperate with the locking slot 8. By pressing down on the pressing block 11 within the through groove 10, the pressing block 11 squeezes the two squeezing blocks 12, thereby squeezing the locking block 7 out of the locking slot 8. The squeezing blocks 12 are locked within the through groove 10 and will not slide out of the smaller locking slot 8.

[0022] In some embodiments, to facilitate the movement of the pressing block 11 by pressing the pressing block 12, both the pressing block 11 and the two pressing blocks 12 are provided with chamfers.

[0023] In some embodiments, to prevent the locking block 7 from bending toward the elastic rope 9, a limiting block 13 is provided on the locking block 7. The limiting block 13 is U-shaped and is provided on both sides of the hinge of the locking block 7 to prevent the two locking blocks 7 from bending toward the center.

[0024] In some embodiments, in order to reduce the friction after the locking block 7 comes into contact with the central gear 5, a wear-resistant block 14 is provided on the top of the locking block 7.

[0025] In some embodiments, to facilitate the rotation of the locking block 7 with the central gear 5, a rotating block 15 is rotatably mounted on the pull rod 3, and the locking block 7 is mounted on the rotating block 15.

[0026] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A rapid sampling device for Karl Fischer reagent, comprising a sampling cylinder (1) and a moving frame (2), wherein a pull rod (3) is slidably and sealed within the sampling cylinder (1), characterized in that, The sampling cylinder (1) is equipped with two threaded rods (4), and the moving frame (2) is rotatably equipped with a central gear (5) and two side gears (6). The central gear (5) and the two side gears (6) are meshed and connected. The side gears (6) are threaded and connected to the threaded rods (4). Two locking blocks (7) are hinged on the pull rod (3). The two locking blocks (7) are symmetrically arranged. Two slots (8) are provided below the central gear (5). The locking blocks (7) are matched with the slots (8). The two locking blocks (7) are connected by an elastic rope (9). The central gear (5) is equipped with a push-out mechanism.

2. The Karl Fischer reagent rapid sampling device according to claim 1, characterized in that, The ejection mechanism includes a through groove (10), which is located on the central gear (5). The through groove (10) is connected to two locking blocks (7). A pressing block (11) and two squeezing blocks (12) are slidably engaged in the through groove (10). The squeezing blocks (12) are configured to cooperate with the locking groove (8).

3. The Karl Fischer reagent rapid sampling device according to claim 2, characterized in that, The lower pressing block (11) and the two extrusion blocks (12) are all provided with chamfers.

4. The Karl Fischer reagent rapid sampling device according to claim 1, characterized in that, The card block (7) is provided with a limiting block (13).

5. The Karl Fischer reagent rapid sampling device according to claim 1, characterized in that, The top of the card block (7) is provided with a wear-resistant block (14).

6. The Karl Fischer reagent rapid sampling device according to claim 1, characterized in that, A rotating block (15) is rotatably mounted on the pull rod (3), and a locking block (7) is mounted on the rotating block (15).

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