Sampling device for detecting dioctyl terephthalate

Abstract

The utility model relates to the technical field of dioctyl terephthalate, in particular to a sampling device for detecting dioctyl terephthalate, which comprises a barrel, a support block and a pull rod, the support block is arranged at the lower end of the barrel, the pull rod is arranged at the upper end of the barrel and penetrates through the barrel, and an extraction structure is arranged in the barrel; the pull plate is pulled upwards, the liquid outlet is driven to pull out the one-way valve, the baffle is driven to move upwards, then the protective shell is rotated, the protective shell drives the rotating shaft to rotate, the protective shell on the other side is rotated to the position below the limiting plate, then the pull plate is loosened, and the liquid outlet is inserted into the one-way valve above the storage bin on the other side. According to the sampling device, a plurality of samples can be rapidly extracted, repeated sampling can be carried out, the sampling efficiency of the sampling device is improved, and the practicability of the sampling device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dioctyl terephthalate, in particular to a sampling device for detecting dioctyl terephthalate. Background Art

[0002] Dioctyl terephthalate is an organic compound and a main plasticizer with excellent performance. Its main form is a transparent oily liquid, insoluble in water, and has the advantages of heat resistance, cold resistance, and low volatility. During the preparation process of dioctyl terephthalate, it is necessary to perform random sampling and testing on dioctyl terephthalate. Therefore, a sampling device for dioctyl terephthalate detection is required to sample dioctyl terephthalate. However, the existing device still has certain usage defects when used, such as:

[0003] When the device is in use, an ordinary sampler can only sample a single sample of dioctyl terephthalate and cannot sample multiple samples. This lack of convenience reduces the sampling efficiency and the practicality of the device. Utility Model Content

[0004] The purpose of the present invention is to solve the above-mentioned problem and to propose a sampling device for detecting dioctyl terephthalate, which improves the problem that the existing sampling device for detecting dioctyl terephthalate cannot sample multiple samples.

[0005] A sampling device for detecting dioctyl terephthalate, comprising a cylinder, a support block and a pull rod: the lower end of the cylinder is provided with a support block, the upper end of the cylinder is provided with a pull rod, the pull rod passes through the cylinder, and an extraction structure is provided inside the cylinder;

[0006] The extraction structure includes a baffle and a piston. The piston is provided below the pull rod, and the inner wall of the cylinder is provided with a baffle. The pull rod passes through the baffle.

[0007] A rotating shaft is provided on the side of the support block, the rotating shaft is rotatably connected to the support block, and a protective shell is provided on the side of the rotating shaft;

[0008] A storage bin is provided at the upper end of the protective shell. The storage bin is embedded in the interior of the protective shell. A one-way valve is provided at the upper end of the storage bin.

[0009] Preferably, a small valve is provided at the lower end of the support block, and an extraction pipe is provided at the lower end of the small valve.

[0010] Preferably, a fixing block is provided at the lower end of the small valve, a protective sleeve is provided at the lower end of the fixing block, and the protective sleeve is threadedly connected to the fixing block.

[0011] Preferably, a limit plate is provided on the side of the cylinder, and a hose is provided on the side of the cylinder.

[0012] Preferably, a movable block is provided on the side of the limiting plate, the movable block is slidably connected to the limiting plate, and the lower end of the hose is connected to the upper part of the movable block.

[0013] Preferably, a pulling plate is provided on the side of the movable block, a blocking plate is provided on the side of the movable block, the blocking plate and the limit plate are slidably connected, and a liquid outlet head is provided at the lower end of the movable block.

[0014] The beneficial effects of the utility model are:

[0015] 1. Through the arrangement of the rotating shaft, protective shell, storage bin, blocking plate, movable block, pull plate and liquid outlet head, when the device is in use, the first sample is extracted through the liquid outlet. At this time, the pull plate is pulled upward to drive the liquid outlet to pull out the one-way valve and drive the blocking plate upward. Then, the protective shell is rotated to make the protective shell drive the rotating shaft to rotate, and the protective shell on the other side is rotated to the bottom of the limit plate. Then, the pull plate is released to insert the liquid outlet into the one-way valve above the storage bin on the other side, and the blocking plate blocks the protective shell on the other side. Then, a new sample is extracted into the storage bin, so that the device can quickly extract multiple samples and can perform repeated sampling, which improves the sampling efficiency of the device and increases the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall front-view three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the separation structure of the protective cover and the fixing block of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the support block and the cylinder body of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the baffle and piston installation of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the one-way valve and storage bin installation of the utility model.

[0021] In the figure: 1. Cylinder; 2. Pull rod; 3. Support block; 4. Rotating shaft; 5. Small valve; 6. Fixed block; 7. Extraction tube; 8. Protective cover; 9. Protective shell; 10. Limit plate; 11. Hose; 12. Movable block; 13. Blocking plate; 14. Storage bin; 15. Pull plate; 16. Liquid outlet head; 17. One-way valve; 18. Baffle; 19. Piston; 20. Extraction structure. DETAILED DESCRIPTION

[0022] 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. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] When implementing: Figure 1-5 As shown, a sampling device for detecting dioctyl terephthalate includes a cylinder 1, a support block 3 and a pull rod 2: the support block 3 is provided at the lower end of the cylinder 1, the pull rod 2 is provided at the upper end of the cylinder 1, the pull rod 2 passes through the cylinder 1, and an extraction structure 20 is provided inside the cylinder 1;

[0024] The extraction structure 20 includes a baffle 18 and a piston 19. The piston 19 is provided below the pull rod 2. The baffle 18 is provided on the inner wall of the cylinder 1. The pull rod 2 passes through the baffle 18.

[0025] When the device is in use, first place the extraction tube 7 into the liquid to be extracted, then pull the pull rod 2 so that the pull rod 2 drives the piston 19 to move upward, so as to generate suction inside the cylinder 1, and suck the liquid into the interior of the cylinder 1 through the extraction tube 7 to extract the sample. When the piston 19 is in contact with the baffle 18, it means that enough sample has been extracted, and then close the small valve 5, and then press the pull rod 2 into the interior of the cylinder 1 again, and push the sample into the storage bin 14 through the piston 19.

[0026] A rotating shaft 4 is provided on the side of the support block 3, and the rotating shaft 4 is rotatably connected to the support block 3. A protective shell 9 is provided on the side of the rotating shaft 4;

[0027] When the device is in use, the protective shell 9 is pushed to rotate the protective shell 9 on the rotating shaft 4, thereby replacing different storage chambers 14 to store samples.

[0028] A storage bin 14 is provided at the upper end of the protective shell 9. The storage bin 14 is embedded in the interior of the protective shell 9. A one-way valve 17 is provided at the upper end of the storage bin 14.

[0029] When the device is in use, after the storage bin 14 is filled with samples, the storage bin 14 is taken out from the protective shell 9, and a new storage bin 14 is inserted into the protective shell 9, and then the new sample is drawn into the storage bin 14, so as to improve the efficiency of sampling.

[0030] A small valve 5 is provided at the lower end of the support block 3, and an extraction pipe 7 is provided at the lower end of the small valve 5;

[0031] A fixing block 6 is provided at the lower end of the small valve 5, and a protective sleeve 8 is provided at the lower end of the fixing block 6. The protective sleeve 8 is threadedly connected to the fixing block 6;

[0032] When the device is in use and liquid needs to be extracted, the protective cover 8 is first unscrewed from the inside of the fixed block 6, and then the extraction tube 7 is inserted into the liquid to be extracted, and then the small valve 5 is opened to extract the liquid. When the extraction is completed, the small valve 5 is closed and the protective cover 8 is screwed back into the inside of the fixed block 6 to protect the extraction tube 7 to prevent dust from sticking to the surface of the extraction tube 7, causing dust to enter the sample and causing errors in the test data.

[0033] A limit plate 10 is provided on the side of the cylinder 1, and a hose 11 is provided on the side of the cylinder 1;

[0034] A movable block 12 is provided on the side of the limiting plate 10. The movable block 12 is slidably connected to the limiting plate 10. The lower end of the hose 11 is connected to the upper end of the movable block 12.

[0035] A pull plate 15 is provided on the side of the movable block 12, a blocking plate 13 is provided on the side of the movable block 12, the blocking plate 13 and the limit plate 10 are slidably understood, and a liquid outlet head 16 is provided at the lower end of the movable block 12;

[0036] When the device is in use, after one storage bin 14 is full, the pull plate 15 is then pulled upward, causing the pull plate 15 to drive the movable block 12 to move upward, driving the blocking plate 13 to move upward, and compressing the spring above the blocking plate 13. The protective shell 9 is then rotated, driving the rotating shaft 4 to rotate, and the storage bin 14 on the other side is rotated between the limit plates 10. The pull plate 15 is then released, and the spring's rebound force is used to extend the blocking plate 13 downward again, so that the blocking plate 13 limits the protective shell 9, preventing the protective shell 9 from being offset due to the rotation of the rotating shaft 4, and allowing the movable block 12 to insert the liquid outlet head 16 into the inside of the one-way valve 17, so as to facilitate the sample to enter the interior of the storage bin 14.

[0037] When the present invention is in use, the protective cover 8 is first unscrewed from the inside of the fixed block 6, and then the extraction tube 7 is inserted into the sample to be extracted, the small valve 5 is opened, and then the pull rod 2 is pulled to make the pull rod 2 drive the piston 19 to move upward, so that suction is generated inside the cylinder 1, and the liquid is extracted through the extraction tube 7, so that the liquid sample enters the interior of the cylinder 1. When the piston 19 moves upward and fits with the baffle 18, the small valve 5 is closed at this time, and then the pull rod 2 is pushed to make the pull rod 2 push the piston 19, and the liquid sample inside the cylinder 1 is pushed into the interior of the hose 11, and passes through the liquid outlet head 16 through the one-way valve 17 into the interior of the storage bin 14, so as to extract and store the liquid sample.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sampling device for detecting dioctyl terephthalate, characterized in that: It comprises a cylinder (1), a support block (3) and a pull rod (2): the lower end of the cylinder (1) is provided with a support block (3), the upper end of the cylinder (1) is provided with a pull rod (2), the pull rod (2) passes through the cylinder (1), and the interior of the cylinder (1) is provided with an extraction structure (20); The extraction structure (20) includes a baffle (18) and a piston (19), the piston (19) is provided below the pull rod (2), the baffle (18) is provided on the inner wall of the cylinder (1), and the pull rod (2) passes through the baffle (18); A rotating shaft (4) is provided on the side of the support block (3), the rotating shaft (4) is rotatably connected to the support block (3), and a protective shell (9) is provided on the side of the rotating shaft (4); A storage bin (14) is provided at the upper end of the protective shell (9), and the storage bin (14) is embedded in the interior of the protective shell (9). A one-way valve (17) is provided at the upper end of the storage bin (14).

2. The sampling device for detecting dioctyl terephthalate according to claim 1, wherein: A small valve (5) is provided at the lower end of the support block (3), and an extraction pipe (7) is provided at the lower end of the small valve (5).

3. The sampling device for detecting dioctyl terephthalate according to claim 2, wherein: A fixing block (6) is provided at the lower end of the small valve (5), a protective sleeve (8) is provided at the lower end of the fixing block (6), and the protective sleeve (8) is threadedly connected to the fixing block (6).

4. The sampling device for detecting dioctyl terephthalate according to claim 1, wherein: A limit plate (10) is provided on the side of the cylinder (1), and a hose (11) is provided on the side of the cylinder (1).

5. The sampling device for detecting dioctyl terephthalate according to claim 4, characterized in that: A movable block (12) is provided on the side of the limiting plate (10), the movable block (12) is slidably connected to the limiting plate (10), and the lower end of the hose (11) is connected to the upper end of the movable block (12).

6. The sampling device for detecting dioctyl terephthalate according to claim 5, characterized in that: A pull plate (15) is provided on the side of the movable block (12), a blocking plate (13) is provided on the side of the movable block (12), the blocking plate (13) and the limit plate (10) are slidably connected, and a liquid outlet head (16) is provided at the lower end of the movable block (12).

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