Safe sampling equipment for dangerous chemical production

Abstract

The invention discloses safe sampling equipment for dangerous chemical production, and belongs to the technical field of chemical sampling, the safe sampling equipment comprises a sampling barrel, a rotating disc is arranged at the lower end of the sampling barrel, a driving part is mounted in the sampling barrel, and the driving part is used for driving the rotating disc to rotate; a plurality of sets of feeding ports are formed in the rotating disc in a penetrating mode, movable cavities are formed in the positions, close to the feeding ports, of the interior of the rotating disc and communicate with the feeding ports, the number of the movable cavities corresponds to that of the feeding ports, and a plurality of sets of first springs are connected to the inner walls of the movable cavities. According to the solid chemical sampling device, the rotating disc can be driven to rotate through the driving component, the rotating disc is in contact with solid chemicals during rotation, the feeding opening can be opened, the solid chemicals are scraped by the rotating scraping plate layer by layer, the scraped solid chemicals can enter the hollow position of the lower end of the sampling barrel from the feeding opening, and sampling of the whole solid chemicals is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical sampling, and more specifically to a safety sampling device for the production of hazardous chemicals. Background Art

[0002] Chemicals can be roughly divided into three types: liquid, solid and gas. Common solid chemicals are powder, granular and block. These chemicals are stored in specific containers. When sampling is needed, the container opening is opened for sampling. For powder and granular chemicals, a spoon can be used to reach into the container for sampling. For small block chemicals, clamps can be used to clamp the chemicals in the container for sampling.

[0003] In actual storage of solid chemicals, the external temperature is constantly changing. When the temperature is high, the solid chemicals (powder, granular and block) in the container will melt, and when the temperature is low, the solid chemicals in the container will solidify. The powder, granular and block chemicals will condense into a whole, so that it is impossible to sample the chemicals in the container using a spoon or clamp.

[0004] Also, during the storage process, moisture or air in the air will inevitably enter the storage container, causing the chemicals in the container to deliquesce or change with the air, eventually forming large lumps that are larger than the opening of the container, making it difficult to sample the chemicals in the container. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a safe sampling equipment for the production of hazardous chemicals, which can realize the rotation of a rotating disk through a driving component. When the rotating disk rotates, it comes into contact with solid chemicals, the feed port will open, and the rotating scraper will scrape off the solid chemicals layer by layer. The scraped solid chemicals will enter the hollow part at the lower end of the sampling tube from the feed port, thereby facilitating the sampling of the entire block of solid chemicals.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A safe sampling device for the production of hazardous chemicals, comprising a sampling barrel, a rotating disk is provided at the lower end of the sampling barrel, a driving component is installed inside the sampling barrel, the driving component is used to drive the rotating disk to rotate, a plurality of groups of feed ports are penetrated through the rotating disk, an active cavity is provided at a position near the feed port inside the rotating disk, the active cavity is communicated with the feed port, and the number of active cavities corresponds to the feed port, a plurality of groups of first springs are connected to the inner wall of the active cavity, a movable plate is connected to one end of the first spring near the feed port, the initial state of the movable plate is to block the feed port, a scraper is fixedly connected to one end of the movable plate away from the first spring, and the lower half of the sampling barrel is designed to be hollow.

[0008] Furthermore, the driving component is installed at the upper end of the sampling cylinder, and a first gear is installed on the output shaft of the driving component. A second gear is meshedly connected to one side of the first gear, and a sleeve with upper and lower openings is fixedly connected to the center of the lower end of the second gear. A prismatic column is arranged inside the sleeve, and the inner wall of the sleeve is matched with the outer wall of the prismatic column. A rotating rod is connected to the lower end of the prismatic column, and the lower end of the rotating rod is fixedly connected to the upper surface of the rotating disk.

[0009] Furthermore, a material pressing plate is sleeved on the side surface of the rotating rod, and the material pressing plate is located at the hollow part of the sampling cylinder, and the outer circumferential surface of the material pressing plate contacts the inner wall of the hollow part of the sampling cylinder.

[0010] Furthermore, a first barrier piece is fixedly connected to the side surface of the rotating rod, and the first barrier piece is located in the hollow of the sampling cylinder. The upper end of the rotating rod sequentially passes through the second gear and the sampling cylinder and extends to the outside, and a pressing plate is connected to the top of the rotating rod.

[0011] Furthermore, a second barrier piece is fixedly connected between the prismatic column and the rotating rod, a second spring is sleeved on the side surface of the rotating rod, and the second spring is located above the first barrier piece.

[0012] Furthermore, a fixed block is fixedly connected to the inner wall of the sampling barrel near the upper end, a first conductive block is installed on the fixed block, a first conductive sheet is arranged on the right side of the first conductive block, the first conductive sheet and the first conductive block are electrically connected to the driving component, the first conductive sheet is made of elastic material, one end of the first conductive sheet is fixedly connected to the inner wall of the sampling barrel, a pressing block is fixedly connected to the right side of the first conductive sheet, and the pressing block movably passes through the side wall of the sampling barrel and extends to the outside.

[0013] Furthermore, an annular groove is provided at the top of the hollow part inside the sampling barrel, a second conductive block is fixedly connected to the inner wall of the annular groove, a second conductive sheet is contacted at the upper end of the second conductive block, the second conductive sheet and the second conductive block are electrically connected to the driving component, one end of the second conductive sheet is fixedly connected to the inner wall of the annular groove, the second conductive sheet is made of elastic material, and an annular plate is fixedly connected to the upper end face of the pressing plate, which lifts up the second conductive sheet when it is at the hollow top of the sampling barrel.

[0014] Furthermore, a waterproof membrane is fixedly connected to the inner wall of the annular groove at a position below the second conductive block, and the waterproof membrane is made of elastic material.

[0015] Furthermore, the scraper is arranged at an angle, and a plurality of groups of evenly distributed bevel teeth are fixedly connected to the inclined surface of the scraper near the lower end.

[0016] Furthermore, a conical column is fixedly connected at the center of the lower end surface of the rotating disk, and a spiral groove is provided on the upper surface of the conical column.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) In the present invention, the driving component drives the rotating disk to rotate. When the rotating disk rotates, it contacts the solid chemicals, the feed port opens, and the rotating scraper scrapes off the solid chemicals layer by layer. The scraped solid chemicals enter the hollow portion at the lower end of the sampling tube from the feed port, which facilitates the sampling of the entire solid chemical. When the scraper scrapes off the solid chemicals layer by layer, it also plays the role of crushing the sample, thus avoiding the troublesome operation of subsequent manual crushing of the sample. In addition, the sampling device of the present invention is not limited by the opening of the storage tank like the clamps or shovels used in the prior art.

[0019] (2) In the present solution, during the sampling process, the sample pushes the pressing plate upward, causing the annular plate to push open the second conductive sheet and the second conductive block, disconnecting the circuit of the driving component and shutting down the driving component. By judging whether the driving component is working through sound, it is possible to judge whether the sample in the sampling tube is full. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an appearance view of the overall structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 It is a cross-sectional view of the upper half of the sampling tube of the present invention;

[0023] Figure 4 For the present invention Figure 2A magnified view of point A in the middle;

[0024] Figure 5 A bottom view of the rotating disk of the present invention;

[0025] Figure 6 is a cross-sectional view of the rotating disk of the present invention;

[0026] Figure 7 This is a disassembled diagram of the movable plate of the present invention;

[0027] Figure 8 It is a display diagram of the active cavity of the present invention;

[0028] Fig. 9 It is a display diagram of the driving component of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Sampling tube; 2. Rotating disk; 3. Feed inlet; 4. Movable cavity; 5. Moving plate; 6. Scraper; 7. First spring; 8. Conical teeth; 9. Driving component; 10. First gear; 11. Second gear; 12. Prismatic column; 13. Sleeve; 14. Pressing plate; 15. First barrier; 16. Pressing plate; 17. Fixed block; 18. First conductive block; 19. First conductive sheet; 20. Pressing block; 21. Second conductive sheet; 22. Second conductive block; 23. Annular plate; 24. Waterproof membrane; 25. Conical column; 26. Second spring; 27. Second barrier; 28. Rotating rod; 29. ​​Annular groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 9 A safe sampling device for the production of hazardous chemicals comprises a sampling barrel 1, a rotating disk 2 is arranged at the lower end of the sampling barrel 1, a driving component 9 is installed inside the sampling barrel 1, the driving component 9 is used to drive the rotating disk 2 to rotate, a plurality of groups of feed ports 3 are penetrated through the rotating disk 2, an active cavity 4 is arranged at a position near the feed port 3 inside the rotating disk 2, and the active cavity 4 is connected to the feed port 3, and the number of the active cavities 4 corresponds to the feed port 3, a plurality of groups of first springs 7 are connected to the inner wall of the active cavity 4, a movable plate 5 is connected to one end of the first spring 7 near the feed port 3, the initial state of the movable plate 5 is to block the feed port 3, a scraper 6 is fixedly connected to one end of the movable plate 5 away from the first spring 7, and the lower half of the sampling barrel 1 is designed to be hollow.

[0033] like Figures 1 to 9 As shown, the driving component 9 is installed at the upper end of the sampling tube 1, and a first gear 10 is installed on the output shaft of the driving component 9. A second gear 11 is meshedly connected to one side of the first gear 10, and a sleeve 13 with upper and lower openings is fixedly connected to the center of the lower end of the second gear 11. A prismatic column 12 is arranged inside the sleeve 13, and the inner wall of the sleeve 13 is matched with the outer wall of the prismatic column 12. A rotating rod 28 is connected to the lower end of the prismatic column 12, and the lower end of the rotating rod 28 is fixedly connected to the upper surface of the rotating disk 2.

[0034] It should be noted that a storage battery or a dry cell is installed inside the sampling tube 1 to power the driving component 9. When it is necessary to sample the solid chemicals condensed into a whole in the storage tank, the opening of the storage tank is first opened, and the sampling personnel extend the lower end of the sampling tube 1 into the storage tank. When the lower end of the sampling tube 1 touches the solid chemicals, the driving component 9 is turned on. The driving component 9 can be a motor or other driving component 9. After the driving component 9 is turned on, it will drive the first gear 10 to rotate. When the first gear 10 rotates, it will drive the second gear 11 and the sleeve 13 to rotate synchronously. Because the inner wall of the sleeve 13 and the outer surface of the prismatic column 12 are matched, that is, the inner wall of the sleeve 13 and the outer surface of the prismatic column 12 are in contact, so the sleeve 13 will drive the prismatic column 12 to rotate when it rotates, and the prismatic column 12 will drive the rotating rod 28 to rotate synchronously when it rotates, and the rotating rod 28 will drive the rotating disk 2 at the lower end to rotate when it rotates;

[0035] When sampling, the sampler holds the sampling tube 1 and applies downward pressure all the time. When the rotating disk 2 rotates, the scraper 6 encounters resistance, and the moving plate 5 compresses the first spring 7. At the same time, the moving plate 5 enters the active cavity 4. The feed port 3 on the rotating disk 2 is opened, and the solid chemicals are scraped off layer by layer through the rotating scraper 6. The scraped solid chemicals will enter the hollow part of the lower end of the sampling tube 1 from the feed port 3. After the sampling is completed, the driving component 9 is closed, and then the sampling tube 1 is pulled up. At this time, the scraper 6 is no longer in contact with the solid When the chemicals come into contact with the material, the first spring 7 compressed before will push the movable plate 5 to move in the opposite direction, and finally the movable plate 5 will block the feed port 3 to prevent the sampled chemicals from falling out of the feed port 3. After the sampling tube 1 is pulled out from the opening of the storage tank, the sampling is completed. The operation is simple and convenient, and the sampling device of the present invention is not restricted by the opening of the storage tank like the clamps or shovels used in the prior art. In addition, when the scraper 6 scrapes off the solid chemicals layer by layer, it also plays the role of crushing the sampled material, avoiding the troublesome operation of subsequent manual crushing of the sampled material.

[0036] like Figures 1 to 9As shown, a material pressing plate 14 is sleeved on the side surface of the rotating rod 28 . The material pressing plate 14 is located at the hollow part of the sampling tube 1 , and the outer circumferential surface of the material pressing plate 14 contacts the inner wall of the hollow part of the sampling tube 1 .

[0037] When the solid chemicals scraped off by the scraper 6 enter the hollow part of the sampling tube 1 from the feed port 3, the broken solid chemicals will enter under the pressing plate 14. As the broken solid chemicals continue to enter, the pressing plate 14 will gradually be lifted up to move upward. The pressing plate 14 has a certain weight and can compact the broken solid chemicals under the action of gravity to ensure the quantity of the sample and avoid sampling too little at a single time.

[0038] like Figures 1 to 9 As shown, the side surface of the rotating rod 28 is fixedly connected with the first barrier plate 15, and the first barrier plate 15 is located in the hollow part of the sampling tube 1. The upper end of the rotating rod 28 passes through the second gear 11 and the sampling tube 1 in sequence and extends to the outside. The top of the rotating rod 28 is connected with a pressing plate 16.

[0039] like Figures 1 to 9 As shown, a second barrier sheet 27 is fixedly connected between the prismatic column 12 and the rotating rod 28 , and a second spring 26 is sleeved on the side surface of the rotating rod 28 . The second spring 26 is located above the first barrier sheet 15 .

[0040] After sampling, when the sample needs to be placed in a sampling dish or a sampling bottle, the sampler extends the lower end of the sampling tube 1 into the sampling dish or the sampling bottle, and then presses the pressing plate 16 downward, the pressing plate 16 will push the prismatic column 12 downward, and the second barrier piece 27 will also move downward synchronously. When the second barrier piece 27 moves downward, it will squeeze the second spring 26, and at the same time, the first barrier piece 15 and the rotating rod 28 will also move downward, and the first barrier piece 15 will push the pressing plate 14 to move downward until the pressing plate 14 is moved out of the sampling tube 1, and the rotating rod 28 will bring The rotating disk 2 is moved to open the lower end opening of the sampling cylinder 1, and the pressing plate 14 will push out the sample in the sampling cylinder 1 when moving downward, so that the sample falls from the lower end opening of the sampling cylinder 1 into the sampling dish or sampling bottle. When the pressing plate 14 is moved out of the sampling cylinder 1, the sampling cylinder 1 is slightly shaken to make the sample fall into the sampling dish or sampling bottle. Then the pressing disk 16 is sent away, and the previously compressed second spring 26 will push the second barrier plate 27 to move upward. At the same time, the rotating rod 28 moves upward, and the pressing plate 14 enters the sampling cylinder 1. Finally, the rotating disk 2 blocks the lower end opening of the sampling cylinder 1.

[0041] After sampling is completed, the sampling device needs to be cleaned to prevent residual substances in the sampling device from contaminating the next sampling. The present invention presses the pressing disk 16 downward to move the pressing plate 14 out of the sampling tube 1, opens the lower end opening of the sampling tube 1, and then rinses the rotating disk 2, the pressing plate 14 and the hollow inner wall of the sampling tube 1 with clean water, which is convenient for cleaning.

[0042] like Figures 1 to 9 As shown, a fixed block 17 is fixedly connected to the inner wall of the sampling barrel 1 near the upper end, a first conductive block 18 is installed on the fixed block 17, a first conductive sheet 19 is arranged on the right side of the first conductive block 18, the first conductive sheet 19 and the first conductive block 18 are electrically connected to the driving component 9, the first conductive sheet 19 is made of elastic material, one end of the first conductive sheet 19 is fixedly connected to the inner wall of the sampling barrel 1, a pressing block 20 is fixedly connected to the right side of the first conductive sheet 19, and the pressing block 20 movably passes through the side wall of the sampling barrel 1 and extends to the outside.

[0043] When sampling, the sampler presses the pressing block 20 with the thumb, so that the pressing block 20 pushes the first conductive sheet 19, the first conductive sheet 19 bends, and finally the first conductive sheet 19 contacts the first conductive block 18, the circuit of the driving component 9 is closed, and the driving component 9 is turned on. After the sampling is completed, the pressing block 20 is sent away, the first conductive sheet 19 restores its deformation, the first conductive sheet 19 is separated from the first conductive block 18, the circuit of the driving component 9 is disconnected, and the driving component 9 is turned off.

[0044] like Figures 1 to 9 As shown, an annular groove 29 is provided at the top of the hollow part inside the sampling tube 1, and a second conductive block 22 is fixedly connected to the inner wall of the annular groove 29. A second conductive sheet 21 is provided in contact with the upper end of the second conductive block 22. The second conductive sheet 21 and the second conductive block 22 are electrically connected to the driving component 9. One end of the second conductive sheet 21 is fixedly connected to the inner wall of the annular groove 29. The second conductive sheet 21 is made of elastic material. An annular plate 23 is fixedly connected to the upper end surface of the pressing plate 14. When the annular plate 23 is at the hollow top of the sampling tube 1, the second conductive sheet 21 is lifted up.

[0045] When sampling, the sample pushes the pressing plate 14 to move upward along the rotating rod 28. When it moves to the top of the hollow part of the sampling tube 1, the annular plate 23 will enter the annular groove 29 and lift up the second conductive sheet 21. The second conductive sheet 21 is separated from the second conductive block 22. At this time, the circuit of the driving component 9 is disconnected and the driving component 9 is turned off. Even if the first conductive sheet 19 is in contact with the first conductive block 18, the driving component 9 is still in the off state. The driving component 9 will produce sound when working. When pressing the pressing block 20 to take a sample, if the sound of the driving component 9 is suddenly not heard, it can be judged that the sample in the sampling tube 1 is full and the sampling is completed.

[0046] like Figure 4 and Fig. 9 As shown, a waterproof membrane 24 is fixedly connected to the inner wall of the annular groove 29 at a position below the second conductive block 22 , and the waterproof membrane 24 is made of elastic material.

[0047] When cleaning the interior of the sampling tube 1 , the waterproof membrane 24 can prevent liquid from entering the second conductive sheet 21 and the second conductive block 22 , thereby avoiding the problem of short circuit when the driving component 9 is turned on.

[0048] like Figures 1 to 9 As shown, the scraper 6 is arranged at an angle, and a plurality of groups of evenly distributed bevel teeth 8 are fixedly connected to the inclined surface of the scraper 6 near the lower end.

[0049] When the scraper 6 rotates, the conical teeth 8 rotate along with the scraper 6. The design of the conical teeth 8 can increase the contact area between the scraper 6 and the solid chemicals, so that the scraper 6 can effectively cut into the solid chemicals, thereby accelerating the scraping efficiency of the solid chemicals.

[0050] like Figures 1 to 9 As shown, a conical column 25 is fixedly connected to the center of the lower end surface of the rotating disk 2, and a spiral groove is opened on the upper side surface of the conical column 25.

[0051] When the rotating disk 2 rotates, it will drive the conical column 25 to rotate. The cooperation between the conical column 25 and the threaded groove realizes the excavation of the solid chemicals directly below the rotating disk 2. The excavated solid chemical debris will move along the inclined surface of the conical column 25, and finally move to the scraper 6, and be scraped by the scraper 6 and enter the sampling tube 1.

[0052] Working principle: When sampling, the sampler first extends the lower end of the sampling tube 1 into the storage tank, then presses the pressing block 20 with the thumb to open the driving component 9 and drive the rotating disk 2 to rotate. When sampling, the sampler holds the sampling tube 1 and applies downward pressure. When the rotating disk 2 rotates, the scraper 6 is subjected to resistance, and the moving plate 5 compresses the first spring 7. At the same time, the moving plate 5 enters the active cavity 4, and the feed port 3 on the rotating disk 2 is opened. The rotating scraper 6 removes the material layer by layer. The scraped solid chemicals will enter the hollow part of the lower end of the sampling tube 1 from the feed port 3. After the sampling is completed, the driving component 9 is turned off, and then the sampling tube 1 is pulled up. At this time, the scraper 6 is no longer in contact with the solid chemicals. The previously compressed first spring 7 will push the moving plate 5 to move in the opposite direction. Finally, the moving plate 5 will block the feed port 3 to prevent the sampled chemicals from falling from the feed port 3. After the sampling tube 1 is pulled out from the opening of the storage tank, the sampling is completed. The operation is simple and convenient.

[0053] As more samples are continuously introduced into the sampling tube 1, these samples will push the material pressing plate 14 to move upward along the rotating rod 28. When it moves to the top of the hollow part of the sampling tube 1, the annular plate 23 will enter the annular groove 29 and lift up the second conductive sheet 21. The second conductive sheet 21 is separated from the second conductive block 22. At this time, the circuit of the driving component 9 is disconnected and the driving component 9 is turned off. Even if the first conductive sheet 19 is in contact with the first conductive block 18, the driving component 9 is still in the turned-off state. The driving component 9 will produce sound when working. When pressing the pressing block 20 to take a sample, if the sound of the driving component 9 working is suddenly not heard, it can be judged that the sample in the sampling tube 1 is full and the sampling is completed.

[0054] After sampling, the sampling personnel insert the lower end of the sampling tube 1 into the sampling dish or sampling bottle, and then press the pressing plate 16 downward, the pressing plate 16 will push the prismatic column 12 downward, and the second barrier sheet 27 will also move downward synchronously. When the second barrier sheet 27 moves downward, it will squeeze the second spring 26, and the first barrier sheet 15 and the rotating rod 28 will also move downward, and the first barrier sheet 15 will push the pressing plate 14 downward until The pressing plate 14 is pushed until it is moved out of the sampling cylinder 1. When the rotating rod 28 moves downward, it will drive the rotating disk 2 to open the lower end opening of the sampling cylinder 1. When the pressing plate 14 moves downward, it will push out the sample in the sampling cylinder 1, so that the sample falls from the lower end opening of the sampling cylinder 1 into the sampling dish or sampling bottle. When the pressing plate 14 is moved out of the sampling cylinder 1, the sampling cylinder 1 is slightly shaken to facilitate the sample to fall into the sampling dish or sampling bottle.

[0055] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety sampling device for hazardous chemical production, comprising a sampling cylinder (1), characterized in that: A rotating disk (2) is provided at the lower end of the sampling tube (1), and a driving component (9) is installed inside the sampling tube (1). The driving component (9) is used to drive the rotating disk (2) to rotate. A plurality of feed ports (3) are provided through the rotating disk (2). An active cavity (4) is provided inside the rotating disk (2) near the feed port (3), and the active cavity (4) is communicated with the feed port (3), and the number of the active cavities (4) corresponds to the feed port (3). The inner wall of the active cavity (4) is connected to a plurality of first springs (7), and one end of the first spring (7) near the feed port (3) is connected to a movable plate (5). The initial state of the movable plate (5) is to block the feed port (3). The end of the movable plate (5) away from the first spring (7) is fixedly connected to a scraper (6). The lower half of the sampling tube (1) is designed to be hollow.

2. A safety sampling device for hazardous chemical production according to claim 1, characterized in that: The driving component (9) is mounted on the upper end of the sampling tube (1); a first gear (10) is mounted on the output shaft of the driving component (9); a second gear (11) is meshedly connected to one side of the first gear (10); a sleeve (13) with upper and lower openings is fixedly connected to the center of the lower end of the second gear (11); a prismatic column (12) is arranged inside the sleeve (13); the inner wall of the sleeve (13) is matched with the outer wall of the prismatic column (12); a rotating rod (28) is connected to the lower end of the prismatic column (12); and the lower end of the rotating rod (28) is fixedly connected to the upper surface of the rotating disk (2).

3. A safety sampling device for hazardous chemical production according to claim 2, characterized in that: A material pressing plate (14) is sleeved on the side surface of the rotating rod (28), and the material pressing plate (14) is located in the hollow part of the sampling tube (1), and the outer circumferential surface of the material pressing plate (14) contacts the inner wall of the hollow part of the sampling tube (1).

4. A safety sampling device for hazardous chemical production according to claim 3, characterized in that: The side surface of the rotating rod (28) is fixedly connected to a first barrier sheet (15), and the first barrier sheet (15) is located in the hollow part of the sampling tube (1). The upper end of the rotating rod (28) passes through the second gear (11) and the sampling tube (1) in sequence and extends to the outside. The top of the rotating rod (28) is connected to a pressing plate (16).

5. A safety sampling device for hazardous chemical production according to claim 4, characterized in that: A second barrier sheet (27) is fixedly connected between the prismatic column (12) and the rotating rod (28); a second spring (26) is sleeved on the side surface of the rotating rod (28); and the second spring (26) is located above the first barrier sheet (15).

6. A safety sampling device for hazardous chemical production according to claim 3, characterized in that: A fixing block (17) is fixedly connected to the inner wall of the sampling tube (1) near the upper end, a first conductive block (18) is mounted on the fixing block (17), a first conductive sheet (19) is arranged on the right side of the first conductive block (18), the first conductive sheet (19) and the first conductive block (18) are electrically connected to the driving component (9), the first conductive sheet (19) is made of elastic material, one end of the first conductive sheet (19) is fixedly connected to the inner wall of the sampling tube (1), a pressing block (20) is fixedly connected to the right side of the first conductive sheet (19), and the pressing block (20) movably penetrates the side wall of the sampling tube (1) and extends to the outside.

7. A safety sampling device for hazardous chemical production according to claim 4 or 6, characterized in that: The interior of the sampling tube (1) is provided with an annular groove (29) at the top of the hollow part, the inner wall of the annular groove (29) is fixedly connected with a second conductive block (22), the upper end of the second conductive block (22) is contacted with a second conductive sheet (21), the second conductive sheet (21) and the second conductive block (22) are electrically connected to the driving component (9), one end of the second conductive sheet (21) is fixedly connected to the inner wall of the annular groove (29), the second conductive sheet (21) is made of elastic material, the upper end surface of the pressing plate (14) is fixedly connected with an annular plate (23), and the annular plate (23) lifts up the second conductive sheet (21) when it is at the hollow top of the sampling tube (1).

8. A safety sampling device for hazardous chemical production according to claim 7, characterized in that: The inner wall of the annular groove (29) is fixedly connected to a waterproof membrane (24) at a position below the second conductive block (22), and the waterproof membrane (24) is made of elastic material.

9. The safety sampling equipment for hazardous chemical production according to claim 1 is characterized by: The scraper (6) is arranged in an inclined manner, and a plurality of groups of evenly distributed bevel teeth (8) are fixedly connected to the inclined surface of the scraper (6) near the lower end.

10. A safety sampling device for hazardous chemical production according to claim 1 or 9, characterized in that: A conical column (25) is fixedly connected to the center of the lower end surface of the rotating disk (2), and a spiral groove is provided on the upper surface of the conical column (25).

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