A sampling device for N-methylpyrrolidone determination

Abstract

The utility model discloses a kind of N-methyl pyrrolidone determination sampling devices, it includes warehouse body, the inside fixed connection of warehouse body is limit clamp, the upper surface of warehouse body is provided with liquid storage cylinder, the upper surface fixedly connected with cylinder of warehouse body, the upper surface slidingly connected with sliding cylinder of warehouse body, the outer surface fixedly connected with support plate of sliding cylinder, the upper surface of support plate and cylinder is movably attached, the inside surface fixedly connected with fixed cylinder of sliding cylinder, the inside of fixed cylinder is provided with slot, the inner wall slidingly connected with piston of fixed cylinder inside slot, the upper surface fixedly connected with connecting rod of piston. Through the above structure, by setting sealing mechanism, liquid suction pipe and wiping mechanism and the like structure, triangular block can plug the opening of liquid storage cylinder, reduce the volatilization of smell, liquid suction pipe can be inserted into the inside of liquid storage cylinder, piston can utilize air pressure and liquid suction pipe to take out liquid, avoid liquid and human contact, play the effect of erasing.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology, specifically to a sampling device for the determination of N-methylpyrrolidone. Background Technology

[0002] Methylpyrrolidone is an organic compound that appears as a colorless, transparent, oily liquid with a slight amine odor. Its physical properties include being miscible with a variety of substances such as water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, and aromatic hydrocarbons. Its main uses include as an industrial solvent and cleaning agent, as well as in health applications.

[0003] In current methylpyrrolidone (MPP) testing and sampling devices, most devices simply use test tubes to extract the liquid. However, because the liquid is slightly toxic, direct exposure to air can have a certain impact on the human body. Summary of the Invention

[0004] This invention provides a sampling device for N-methylpyrrolidone determination. The device can use a chamber to shield the liquid storage cylinder, preventing the odor from directly entering the human body and thus providing protection. When the liquid extraction tube is pulled out, a brush can wipe the liquid off the outer surface of the extraction tube to prevent the liquid from contacting the human body.

[0005] To achieve the above objectives, an N-methylpyrrolidone (NMP) determination sampling device is provided, comprising a chamber, a limiting clamp fixedly connected inside the chamber, a liquid storage cylinder provided on the upper surface of the chamber, a sliding groove formed on the upper surface of the liquid storage cylinder, a sealing mechanism provided inside the sliding groove, a wiping mechanism provided inside the chamber, a cylinder fixedly connected to the upper surface of the chamber, a sliding cylinder slidably connected to the upper surface of the chamber, a support plate fixedly connected to the outer surface of the sliding cylinder, the support plate movably fitting against the upper surface of the cylinder, a fixed cylinder fixedly connected to the inner surface of the sliding cylinder, a hollow groove formed inside the fixed cylinder, a piston slidably connected to the inner wall of the hollow groove inside the fixed cylinder, and a connecting rod fixedly connected to the upper surface of the piston.

[0006] According to the aforementioned N-methylpyrrolidone sampling device, a handle is fixedly connected to the upper surface of the connecting rod, a liquid extraction tube is fixedly connected to the lower end of the fixed cylinder, a glass layer is provided on the front surface of the cover, and a filtration and ventilation device body is provided inside the chamber. By providing the liquid extraction tube, the liquid extraction tube can take out liquid from the storage cylinder, thereby storing the liquid. The filtration and ventilation device body can filter the odor inside the device, thereby achieving a filtration effect.

[0007] According to the N-methylpyrrolidone determination sampling device, a cover is rotatably connected to the front surface of the chamber, and a support clip is fixedly connected to the front surface of the chamber. By setting a glass layer, the operator can observe the internal condition of the chamber through the glass layer.

[0008] According to the N-methylpyrrolidone determination sampling device, a rotating block is rotatably connected to the front surface of the cover, and the rotating block is rotatably connected to the inner surface of the support clip. By setting the rotating block, the rotating block can lock the cover with the support clip, preventing the operator from accidentally opening the cover during use, thus achieving a locking effect.

[0009] According to the N-methylpyrrolidone determination and sampling device, the sealing mechanism includes a telescopic rod, a triangular block, and a spring. The telescopic rod is fixedly connected to the inner surface of the sliding groove inside the liquid storage cylinder, and the triangular block is fixedly connected to the output end of the telescopic rod. By setting the telescopic rod, the telescopic rod can prevent the spring from deforming when the spring bounces, thus achieving a limiting effect.

[0010] According to the N-methylpyrrolidone determination sampling device, the left end of the spring is fixedly connected to the left side surface of the sliding groove inside the liquid storage cylinder. The spring is fixedly connected to the left side surface of the triangular block. By setting the spring, the spring can push the triangular block to slide through the sliding groove inside the liquid storage cylinder, thereby achieving a pushing effect.

[0011] According to the N-methylpyrrolidone determination sampling device, the wiping mechanism includes a sliding chamber, a support, and a brush. The sliding chamber is fixedly connected to the inner surface of the chamber body. By setting the sliding chamber, the parts in the support can slide inside the sliding chamber, achieving the effect of placement.

[0012] According to the N-methylpyrrolidone determination and sampling device, the support is slidably connected to the inner surface of the sliding chamber, and the brush is fixedly connected to the inner surface of the support. By setting the brush, when the liquid extraction tube is pulled out, the brush can wipe away the liquid on the outer surface of the liquid extraction tube, avoiding contact between the liquid and the human body, and achieving the wiping effect.

[0013] The beneficial effects of this utility model are as follows: By setting up a sealing mechanism, a liquid extraction tube, and a wiping mechanism, the triangular block can block the opening of the liquid storage cylinder, reducing the volatilization of odor and achieving the effect of preventing volatilization. The liquid extraction tube can be inserted into the interior of the liquid storage cylinder, and the piston can use air pressure and the liquid extraction tube to extract liquid, achieving the effect of storing liquid. When the liquid extraction tube is extracted, the brush can wipe the liquid on the outer surface of the liquid extraction tube, avoiding contact between the liquid and the human body, and achieving the effect of wiping.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1This is a schematic diagram of the overall structure of the sampling device for determining N-methylpyrrolidone according to this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the internal structure of a sampling device for determining N-methylpyrrolidone according to this utility model;

[0019] Figure 4 This is a schematic diagram of the wiping mechanism of the sampling device for determining N-methylpyrrolidone according to this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view at point B in the middle;

[0021] Figure 6 This is a cross-sectional view of the overall structure of the sampling device for determining N-methylpyrrolidone according to this utility model;

[0022] Figure 7 This is a schematic diagram of the sealing mechanism of a sampling device for determining N-methylpyrrolidone according to this utility model;

[0023] Figure 8 This is a schematic diagram of the internal structure of the sliding cylinder of the sampling device for determining N-methylpyrrolidone according to this utility model.

[0024] Legend:

[0025] 1. Chamber body; 2. Limiting clamp; 3. Liquid storage cylinder; 4. Sealing mechanism; 401. Telescopic rod; 402. Triangular block; 403. Spring; 5. Cylinder; 6. Support plate; 7. Sliding cylinder; 8. Fixed cylinder; 9. Connecting rod; 10. Piston; 11. Handle; 12. Liquid suction pipe; 13. Wiping mechanism; 1301. Sliding chamber; 1302. Bracket; 1303. Brush; 14. Cover; 15. Rotating block; 16. Placement clamp. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figures 1 to 8This utility model provides an N-methylpyrrolidone (NMP) sampling device, which includes a chamber 1. A limiting clamp 2 is fixedly connected inside the chamber 1. A liquid storage cylinder 3 is provided on the upper surface of the chamber 1. A sliding groove is formed on the upper surface of the liquid storage cylinder 3. A sealing mechanism 4 is provided inside the sliding groove. A wiping mechanism 13 is provided inside the chamber 1. A cylinder 5 is fixedly connected to the upper surface of the chamber 1. A sliding cylinder 7 is slidably connected to the upper surface of the chamber 1. A support plate 6 is fixedly connected to the outer surface of the sliding cylinder 7. The support plate 6 is movably fitted with the upper surface of the cylinder 5. A fixed cylinder 8 is fixedly connected to the inner surface of the sliding cylinder 7. A hollow groove is formed inside the fixed cylinder 8. A piston 10 is slidably connected to the inner wall of the hollow groove inside the fixed cylinder 8. A connecting rod 9 is fixedly connected to the upper surface of the piston 10.

[0028] A handle 11 is fixedly connected to the upper surface of the connecting rod 9, and a liquid extraction pipe 12 is fixedly connected to the lower end of the fixed cylinder 8. A glass layer is provided on the front surface of the cover 14. The body of the filtration and ventilation device is installed inside the chamber 1. The cover 14 is rotatably connected to the front surface of the chamber 1, and a support clip 16 is fixedly connected to the front surface of the chamber 1. By setting the liquid extraction pipe 12, liquid can be taken out from the liquid storage cylinder 3, which serves to store liquid. The body of the filtration and ventilation device can filter the odor inside the device, which serves to filter. By setting the glass layer, the operator can observe the internal situation of the chamber 1 through the glass layer.

[0029] A rotating block 15 is rotatably connected to the front surface of the cover 14. The rotating block 15 is rotatably connected to the inner surface of the support clip 16. By setting the rotating block 15, the rotating block 15 can lock the cover 14 with the support clip 16 to prevent the operator from accidentally opening the cover 14 during use, thus playing a locking role.

[0030] The wiping mechanism 13 includes a sliding chamber 1301, a support 1302, and a brush 1303. The sliding chamber 1301 is fixedly connected to the inner surface of the chamber body 1, the support 1302 is slidably connected to the inner surface of the sliding chamber 1301, and the brush 1303 is fixedly connected to the inner surface of the support 1302. By setting the sliding chamber 1301, the parts in the support 1302 can slide inside the sliding chamber 1301, which serves as a placement function. By setting the brush 1303, when the liquid extraction tube 12 is pulled out, the brush 1303 can wipe away the liquid on the outer surface of the liquid extraction tube 12, avoiding contact between the liquid and the human body, thus achieving the wiping function.

[0031] The sealing mechanism 4 includes a telescopic rod 401, a triangular block 402, and a spring 403. The telescopic rod 401 is fixedly connected to the inner surface of the sliding groove inside the liquid storage cylinder 3. The triangular block 402 is fixedly connected to the output end of the telescopic rod 401. The left end of the spring 403 is fixedly connected to the left side surface of the sliding groove inside the liquid storage cylinder 3. The spring 403 and the left side surface of the triangular block 402 are fixedly connected. By setting the telescopic rod 401, the telescopic rod 401 can prevent the spring 403 from deforming when the spring 403 bounces, thus playing a limiting role. By setting the spring 403, the spring 403 can push the triangular block 402 to slide through the sliding groove inside the liquid storage cylinder 3, thus playing a pushing role.

[0032] Working principle: Rotate the rotating block 15 to open the cover 14, place the connecting rod 9 on the inner lower surface of the chamber 1, and make the connecting rod 9 and the inner surface of the limiting clamp 2 fit together. After closing the cover 14, insert the sliding cylinder 7 into the chamber 1. At this time, the bottom of the liquid extraction tube 12 will touch the inclined surface of the triangular block 402 and compress the spring 403 to extend into the liquid storage cylinder 3, so that the support plate 6 fits with the upper surface of the cylinder 5. Press the support plate 6 and slowly pull the handle 11. The liquid will flow into the interior of the liquid extraction tube 12. After taking out the appropriate amount of liquid, take out the entire sliding cylinder 7. When the liquid extraction tube 12 is taken out, the brush 1303 will wipe the liquid off the outer surface of the liquid extraction tube 12, achieving the cleaning effect. When the brush 1303 needs to be cleaned, the entire bracket 1302 can be taken out directly.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sampling device for determining N-methylpyrrolidone, characterized in that, The container includes a storage tank (1), a limiting clamp (2) is fixedly connected inside the storage tank (1), a liquid storage cylinder (3) is provided on the upper surface of the storage tank (3), a sliding groove is provided on the upper surface of the liquid storage cylinder (3), a sealing mechanism (4) is provided inside the sliding groove, a wiping mechanism (13) is provided inside the storage tank (1), a cylinder (5) is fixedly connected to the upper surface of the storage tank (1), a sliding cylinder (7) is slidably connected to the upper surface of the storage tank (1), a support plate (6) is fixedly connected to the outer surface of the sliding cylinder (7), the support plate (6) is movably attached to the upper surface of the cylinder (5), a fixed cylinder (8) is fixedly connected to the inner surface of the sliding cylinder (7), a hollow groove is provided inside the fixed cylinder (8), a piston (10) is slidably connected to the inner wall of the hollow groove inside the fixed cylinder (8), and a connecting rod (9) is fixedly connected to the upper surface of the piston (10).

2. The sampling device for determining N-methylpyrrolidone according to claim 1, characterized in that, A handle (11) is fixedly connected to the upper surface of the connecting rod (9), a liquid extraction pipe (12) is fixedly connected to the lower end of the fixed cylinder (8), a glass layer is provided on the front surface of the cover (14), and a filtration and ventilation device is provided inside the chamber (1).

3. The sampling device for determining N-methylpyrrolidone according to claim 2, characterized in that, The front surface of the compartment (1) is rotatably connected to a cover (14), and the front surface of the compartment (1) is fixedly connected to a support clip (16).

4. The sampling device for determining N-methylpyrrolidone according to claim 3, characterized in that, The front surface of the cover (14) is rotatably connected to a rotating block (15), and the rotating block (15) is rotatably connected to the inner surface of the support clip (16).

5. The sampling device for determining N-methylpyrrolidone according to claim 1, characterized in that, The sealing mechanism (4) includes a telescopic rod (401), a triangular block (402) and a spring (403). The telescopic rod (401) is fixedly connected to the inner surface of the sliding groove inside the liquid storage cylinder (3), and the triangular block (402) is fixedly connected to the output end of the telescopic rod (401).

6. The sampling device for determining N-methylpyrrolidone according to claim 5, characterized in that, The left end of the spring (403) is fixedly connected to the left side surface of the sliding groove inside the liquid storage cylinder (3). The spring (403) is fixedly connected to the left side surface of the triangular block (402).

7. The sampling device for determining N-methylpyrrolidone according to claim 1, characterized in that, The wiping mechanism (13) includes a sliding chamber (1301), a bracket (1302) and a brush (1303), wherein the sliding chamber (1301) is fixedly connected to the inner surface of the chamber body (1).

8. The sampling device for determining N-methylpyrrolidone according to claim 7, characterized in that, The bracket (1302) is slidably connected to the inner surface of the sliding chamber (1301), and the brush (1303) is fixedly connected to the inner surface of the bracket (1302).

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