Sampling liquid titration device stable in operation

Abstract

The utility model discloses a sampling liquid titration device stable in operation, which relates to the technical field of titration devices and comprises a bottom plate, an L-shaped fixing plate is welded on one side of the top end of the bottom plate, a sampling assembly is arranged on the L-shaped fixing plate, and a limiting fixing assembly is arranged at the top end of the bottom plate. The sampling assembly comprises a negative pressure barrel fixedly connected to the interior of the L-shaped fixing plate. By rotating the connecting shaft, negative pressure is generated in the negative pressure barrel to extract sampling liquid into the bottle body, so that the sampling liquid drips into the sampling box through the dropping pipette to be analyzed and detected, the hose is taken down from the connecting pipe, then the rotating disc is rotated by 120 degrees, the other group of liquid storage pipes are communicated with the vertical pipe, and the sampling liquid is separated from the vertical pipe. According to the liquid sample titration device, different liquid samples can be subjected to titration analysis through rotation of the rotating disc, so that the condition that various samples are mixed is effectively avoided, the detection accuracy can be more effectively improved, and the efficiency of workers is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of titration devices, in particular to a sampling liquid titration device with stable operation. Background Art

[0002] A titrator is a liquid sampling device, an instrument used to absorb or add a small amount of liquid reagent.

[0003] Existing titration devices usually extract one sampling liquid when performing sampling titration. However, when different sampling liquids need to be titrated and analyzed, sampling through the same device easily causes multiple residual samples to mix, thereby reducing the accuracy of the titration analysis. Therefore, a sampling liquid titration device with stable operation is proposed. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a sampling liquid titration device with stable operation to solve the technical problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sampling liquid titration device with stable operation, comprising a base plate, an L-shaped fixing plate welded to one side of the top end of the base plate, a sampling assembly provided on the L-shaped fixing plate, a limit fixing assembly provided on the top end of the base plate, the sampling assembly comprising a negative pressure barrel fixedly connected to the inside of the L-shaped fixing plate, a piston slidably connected to the inner wall of the negative pressure barrel, a connecting shaft provided on the top end of the piston, a support plate threadedly connected to the upper end of the connecting shaft surface, a vertical pipe connected to the bottom end of the vertical pipe surface, a fixed disk welded to the lower end of the vertical pipe surface, a circular ring rotatably connected to the inside of the fixed disk, the bottom end of the circular ring fixedly connected to the rotating disk, three groups of liquid storage tubes are arranged in a circular array inside the rotating disk, the bottom ends of the three groups of liquid storage tubes are fixedly connected to dropper tubes, and a connecting tube is provided on one side of the liquid storage tube.

[0006] As an optimal technical solution for a stable-operation sampling liquid titration device of the present invention, a bottle body is placed on one side of the top of the bottom plate, a hose is provided inside the bottle body, the end of the hose away from the bottle body is connected to the connecting pipe, and a sampling box is placed directly below the dropper.

[0007] As an optimal technical solution of the sampling liquid titration device with stable operation of the utility model, the piston is internally rotatably connected to a limit block, and the limit block is fixedly connected to the connecting shaft.

[0008] As an optimal technical solution of a stable-operation sampling liquid titration device of the present invention, the connecting ends of the dropper, the connecting tube and the liquid storage tube are all provided with a one-way valve.

[0009] As an optimal technical solution for a sampling liquid titration device with stable operation of the utility model, the limiting and fixing component includes a placing table fixedly connected to the top of the base plate, cross plates are fixedly connected on both sides of the top of the placing table, a spring a is fixedly connected to one side of the cross plate, and a splint is fixedly connected to the end of the spring a away from the cross plate, the top of the placing table is fixedly connected to the limiting plate, a slider is welded to the bottom end of the splint, and a sliding groove that matches the slider is opened at the top of the placing table.

[0010] As an optimal technical solution for a sampling liquid titration device with stable operation of the utility model, a vertical plate is provided on one side of the horizontal plate and is fixedly connected to the top of the placement table. An insertion rod is slidably connected to the upper end of the vertical plate. A pull plate is welded on one side of the insertion rod. A spring b is provided between the pull plate and the vertical plate. A slot that fits the insertion rod is opened on the surface of the rotating disk.

[0011] In summary, the present invention has the following beneficial effects:

[0012] 1. The utility model generates negative pressure inside the negative pressure barrel by rotating the connecting shaft to draw the sampling liquid into the bottle body, so that the sampling liquid drips into the sampling box through the dropper for analysis and detection. By removing the hose from the connecting pipe and then rotating the rotating disk 120 degrees, another set of liquid storage tubes is connected to the vertical pipe for subsequent sampling operations. Different liquid samples can be titrated and analyzed by rotating the rotating disk, effectively avoiding the mixing of multiple samples, thereby more effectively improving the accuracy of the detection and further improving the efficiency of the staff.

[0013] 2. The utility model places the sampling box on the placement table and abuts the sampling box against one side of the limit plate. Then, the sampling box is limited and fixed under the action of the clamping plate and the spring a. At the same time, when sampling, the pull plate is pulled to insert the insertion rod into the slot under the action of the spring b, and the rotating disk is fixed to prevent shaking during the sampling operation, making the staff's operating room more stable. At the same time, it also helps to maintain the continuity and stability of the titration process, and reduce repeated operations and waste of time caused by unstable device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall components of the utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of the sampling assembly of the present utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the rotating disk of the present utility model;

[0017] Figure 4 It is a three-dimensional schematic diagram of the limiting and fixing component of the utility model.

[0018] In the figure: 100, bottom plate; 110, L-shaped fixing plate; 120, hose; 130, bottle body; 140, sampling box;

[0019] 200, sampling assembly; 210, negative pressure barrel; 220, piston; 230, connecting shaft; 231, limit block; 240, support plate; 250, vertical tube; 260, fixed disk; 270, ring; 280, rotating disk; 290, liquid storage tube; 2910, drip tube; 2920, connecting tube;

[0020] 300, limit fixing assembly; 310, placement table; 320, horizontal plate; 330, spring a; 340, clamping plate; 341, slider; 342, slide groove; 350, limit plate; 360, vertical plate; 370, insertion rod; 371, slot; 380, spring b; 390, pull plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] The following describes an embodiment of the present invention based on its overall structure.

[0023] A sampling liquid titration device with stable operation, such as Figure 1-4 As shown, it includes a base plate 100, an L-shaped fixing plate 110 is welded to one side of the top of the base plate 100, a sampling assembly 200 is provided on the L-shaped fixing plate 110, a limit fixing assembly 300 is provided on the top of the base plate 100, and the sampling assembly 200 includes a negative pressure barrel 210 fixedly connected to the inside of the L-shaped fixing plate 110, a piston 220 is slidably connected to the inner wall of the negative pressure barrel 210, and a connecting shaft 230 is provided on the top of the piston 220, and a thread is formed on the upper end of the surface of the connecting shaft 230. A support plate 240 is connected, and a vertical pipe 250 is connected to the bottom end of the negative pressure barrel 210. A fixed disk 260 is welded to the lower end of the surface of the vertical pipe 250. A circular ring 270 is rotatably connected inside the fixed disk 260. The bottom end of the circular ring 270 is fixedly connected to a rotating disk 280. There are three groups of liquid storage tubes 290 in a circular array inside the rotating disk 280. The bottom ends of the three groups of liquid storage tubes 290 are fixedly connected to a drip tube 2910, and a connecting tube 2920 is provided on one side of the liquid storage tube 290.

[0024] The staff rotates the connecting shaft 230 to make the connecting shaft 230 rise, and the connecting shaft 230 drives the piston 220 to rise synchronously through the limit block 231, so that negative pressure is generated inside the negative pressure barrel 210, and the sampling liquid is extracted into the bottle body 130 through the connecting pipe 2920 and the hose 120, so that the sampling liquid flows into the liquid storage tube 290, and then reverses the connecting shaft 230 to make the piston 220 descend, squeezing the sampling liquid inside the liquid storage tube 290, so that the sampling liquid drips into the sampling box 140 through the dropper 2910 For analysis and testing, when different sampling liquids need to be tested, the hose 120 is removed from the connecting tube 2920, and then the rotating disk 280 is rotated one hundred and twenty degrees to connect another set of liquid storage tubes 290 with the vertical tube 250 for subsequent sampling operations. By rotating the rotating disk 280, different liquid samples can be titrated and analyzed, effectively avoiding the mixing of multiple samples, thereby more effectively improving the accuracy of the test and further improving the efficiency of the staff.

[0025] Please refer to Figure 1 and Figure 2 A bottle body 130 is placed on one side of the top of the bottom plate 100 , a hose 120 is provided inside the bottle body 130 , and one end of the hose 120 away from the bottle body 130 is connected to the connecting pipe 2920 , and a sampling box 140 is placed directly below the dropper 2910 .

[0026] By connecting the hose 120 to the connecting pipe 2920 , the liquid inside the bottle 130 can be effectively extracted.

[0027] Please refer to Figure 2 and Figure 3 The piston 220 is internally rotatably connected to the limit block 231, the limit block 231 is fixedly connected to the connecting shaft 230, and the connecting ends of the drip tube 2910, the connecting tube 2920 and the liquid storage tube 290 are all provided with a one-way valve.

[0028] The setting of the limit block 231 can prevent the connecting shaft 230 from driving the piston 220 to rotate when rotating, and the setting of the one-way valve can better perform sampling operations through the connecting tube 2920 and the drip tube 2910.

[0029] Please refer to Figure 1 and Figure 4The limit fixing assembly 300 includes a placing table 310 fixedly connected to the top of the base plate 100, and horizontal plates 320 are fixedly connected to both sides of the top of the placing table 310, and a spring a330 is fixedly connected to one side of the horizontal plate 320. The end of the spring a330 away from the horizontal plate 320 is fixedly connected to the clamping plate 340, and the top of the placing table 310 is fixedly connected to the limiting plate 350, and a slider 341 is welded to the bottom end of the clamping plate 340. A sliding groove 342 that matches the slider 341 is provided at the top of the placing table 310, and a vertical plate 360 is provided on one side of the horizontal plate 320 and fixedly connected to the top of the placing table 310. The upper end of the vertical plate 360 is slidably connected to the insertion rod 370, and a pull plate 390 is welded on one side of the insertion rod 370. A spring b380 is provided between the pull plate 390 and the vertical plate 360, and a slot 371 that matches the insertion rod 370 is provided on the surface of the rotating disk 280.

[0030] The staff places the sampling box 140 on the placement table 310 and presses the sampling box 140 against one side of the limit plate 350. Then, the sampling box 140 is limited and fixed under the action of the clamping plate 340 and the spring a330. At the same time, when sampling, the staff pulls the pull plate 390 to move the insertion rod 370 and stretch the spring b380. After the rotating disk 280 has completed its rotation, the pull plate 390 is released, so that the insertion rod 370 is inserted into the slot 371 under the action of the spring b380, and the rotating disk 280 is fixed to prevent shaking during the sampling operation, making the staff's operating room more stable, and also helping to maintain the continuity and stability of the titration process, reducing repeated operations and waste of time caused by unstable equipment.

[0031] When in use, the staff puts the sampling box 140 on the placement table 310 and makes the sampling box 140 abut against one side of the limiting plate 350, and then limits and fixes the sampling box 140 under the action of the clamping plate 340 and the spring a330. At the same time, when sampling, the staff pulls the pull plate 390 to make the insertion rod 370 insert into the slot 371 under the action of the spring b380, and fixes the rotating disk 280 to prevent shaking during the sampling operation, making the staff operating room more stable, and also helping to maintain the continuity and stability of the titration process, reducing repeated operations and waste of time caused by unstable device, and rotating the connecting shaft 230 to make the negative pressure barrel Negative pressure is generated inside 210 to draw out the sampling liquid into the bottle body 130, so that the sampling liquid drips into the sampling box 140 through the dropper 2910 for analysis and detection. By removing the hose 120 from the connecting tube 2920 and then rotating the rotating disk 280 one hundred and twenty degrees, another set of liquid storage tubes 290 is connected to the vertical tube 250 for subsequent sampling operations. Different liquid samples can be titrated and analyzed by rotating the rotating disk 280, effectively avoiding the mixing of multiple samples, thereby more effectively improving the accuracy of the detection and further improving the efficiency of the staff. The parts not involved in the device are the same as the existing technology or can be implemented using the existing technology.

[0032] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A sampling liquid titration device with stable operation, comprising a bottom plate (100), characterized in that: An L-shaped fixing plate (110) is welded to one side of the top of the bottom plate (100), a sampling assembly (200) is provided on the L-shaped fixing plate (110), a position limiting fixing assembly (300) is provided on the top of the bottom plate (100), the sampling assembly (200) comprises a negative pressure barrel (210) fixedly connected to the inside of the L-shaped fixing plate (110), a piston (220) is slidably connected to the inner wall of the negative pressure barrel (210), a connecting shaft (230) is provided on the top of the piston (220), and a support is threadedly connected to the upper end of the surface of the connecting shaft (230). The negative pressure barrel (210) is connected to a vertical pipe (250) at the bottom end, a fixed disk (260) is welded to the lower end of the surface of the vertical pipe (250), a circular ring (270) is rotatably connected inside the fixed disk (260), a rotating disk (280) is fixedly connected to the bottom end of the circular ring (270), and three groups of liquid storage tubes (290) are arranged in a circular array inside the rotating disk (280), the bottom ends of the three groups of liquid storage tubes (290) are all fixedly connected to a drip tube (2910), and a connecting tube (2920) is provided on one side of the liquid storage tube (290).

2. The stable operation sampling liquid titration device according to claim 1, characterized in that: A bottle body (130) is placed on one side of the top of the bottom plate (100), a hose (120) is provided inside the bottle body (130), and the end of the hose (120) away from the bottle body (130) is connected to the connecting tube (2920), and a sampling box (140) is placed directly below the dropper (2910).

3. The stable operation sampling liquid titration device according to claim 1, characterized in that: The piston (220) is internally rotatably connected to a limiting block (231), and the limiting block (231) is fixedly connected to the connecting shaft (230).

4. The stable operation sampling liquid titration device according to claim 1, characterized in that: The connecting ends of the dripping tube (2910), the connecting tube (2920) and the liquid storage tube (290) are all provided with one-way valves.

5. The stable operation sampling liquid titration device according to claim 1, characterized in that: The limiting and fixing assembly (300) includes a placement platform (310) fixedly connected to the top of the base plate (100), and the two sides of the top of the placement platform (310) are fixedly connected to the cross plates (320), and one side of the cross plate (320) is fixedly connected to a spring a (330), and the end of the spring a (330) away from the cross plate (320) is fixedly connected to a clamping plate (340), and the top of the placement platform (310) is fixedly connected to a limiting plate (350), and the bottom end of the clamping plate (340) is welded with a slider (341), and the top of the placement platform (310) is provided with a sliding groove (342) that matches the slider (341).

6. The stable operation sampling liquid titration device according to claim 5, characterized in that: One side of the horizontal plate (320) is provided with a vertical plate (360) fixedly connected to the top of the placement table (310), the upper end of the vertical plate (360) is slidably connected to the insertion rod (370), and a pull plate (390) is welded to one side of the insertion rod (370), and a spring b (380) is provided between the pull plate (390) and the vertical plate (360), and a slot (371) that matches the insertion rod (370) is opened on the surface of the rotating disk (280).

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