Propionyl chloride sampling device

Abstract

The utility model is applicable to the technical field of sampling devices, and provides a propionyl chloride sampling device which comprises a sampling barrel, the bottom of the sampling barrel is communicated with a collecting pipe, the end part of the collecting pipe is in threaded connection with a sealing cover, a first piston plate is slidably connected in the sampling barrel, and the top of the first piston plate is fixedly connected with a first propping rod; the top of the first abutting rod is fixedly connected with a pull rod, the periphery of the sampling barrel is sleeved with an annular air bag, and the annular air bag is in sliding connection with the sampling barrel. According to the utility model, through the arrangement of the inflation mechanism, the annular air bag can be automatically inflated when the sampling barrel extends downwards into the sampling opening and extrudes the fixing ring, so that the sampling opening can be completely sealed through the annular air bag, and the annular air bag can be inflated without the help of an external tool through the mode; in addition, the annular air bag can be inflated simply and conveniently in the mode.

Description

Technical Field

[0001] The utility model belongs to a sampling device, in particular to a propionyl chloride sampling device. Background Art

[0002] As a raw material for medicines, spices, and pesticides and herbicides, propionyl chloride is used in many fields of chemical synthesis. As a production raw material, propionyl chloride needs to be subjected to quality inspection when it enters the factory, so it is necessary to sample and detect the propionyl chloride in the container. However, as a toxic, harmful, and volatile raw material, it is necessary to keep the propionyl chloride in the container in a sealed state as much as possible while sampling it.

[0003] Chinese patent with publication number CN213902998U discloses a propionyl chloride sampling device, which includes a sampling cylinder. The sampling cylinder is hollow, a sampling port is provided at the lower end of the sampling cylinder, an opening is provided at the upper end of the sampling cylinder, a piston is provided in the sampling cylinder, the piston passes through the opening at the upper end of the sampling cylinder and is arranged in the sampling cylinder, the outer wall of the piston is closely matched with the inner wall of the sampling cylinder, a pull rod is fixedly arranged on the piston, and the pull rod drives the piston to reciprocate in the sampling cylinder; an airbag matched with the discharge port of the raw material barrel is sleeved outside the sampling cylinder, and the airbag is made of an elastic material.

[0004] However, the above patent has the following deficiencies:

[0005] 1. By arranging an airbag outside the sampling cylinder, the above patent can block the gap between the sampling cylinder and the barrel mouth by inflating the airbag during sampling, so as to prevent the volatilization and leakage of materials. However, the above patent does not set a sealing structure for temporarily sealing the sampling port. Therefore, before finding a tool to inflate the airbag, a part of the propionyl chloride liquid will volatilize, and when the sampling personnel inhale it, it will damage their lungs;

[0006] 2. By arranging an airbag outside the sampling cylinder, the above patent can block the gap between the sampling cylinder and the barrel mouth by inflating the airbag during sampling, so as to prevent the volatilization and leakage of materials. However, the above patent needs an external tool to inflate the airbag, which makes the use of the device not fast and convenient enough. Content of the Utility Model

[0007] The utility model provides a propionyl chloride sampling device, aiming to solve the problems of a propionyl chloride sampling device mentioned in the above background art.

[0008] The utility model is realized as follows. A propionyl chloride sampling device includes a sampling cylinder. A collecting pipe is connected and arranged at the bottom of the sampling cylinder. A sealing cover is connected to the end of the collecting pipe by threads. A first piston plate is slidably connected inside the sampling cylinder. A first abutting rod is fixedly connected to the top of the first piston plate. A pull rod is fixedly connected to the top of the first abutting rod. An annular airbag is sleeved on the outer periphery of the sampling cylinder. The annular airbag is slidably connected to the sampling cylinder. A sealing structure for temporarily sealing the sampling port and an inflation structure for inflating the annular airbag are arranged on the outer periphery of the annular airbag.

[0009] Preferably, the sealing structure includes a sealing cylinder. A through groove is formed in the middle of the sealing cylinder. The sealing cylinder is slidably sleeved on the outer periphery of the sampling cylinder. The sealing cylinder is arranged above the annular airbag. A communicating pipe is arranged through the surface of the sealing cylinder. The number of the communicating pipes is set to two. The bottoms of the two communicating pipes are both communicated with the annular airbag.

[0010] When the sampling cylinder penetrates downward through the sampling port on the surface of the container, the sealing cylinder on the outer periphery of the sampling cylinder will abut against the top of the sampling port, so as to seal the sampling port. Thus, the sampling port can be temporarily sealed before inflating the annular airbag, so as to avoid the volatile and corrosive propionyl chloride from volatilizing and discharging from the sampling port.

[0011] Preferably, the inflation structure includes piston cylinders. The number of the piston cylinders is set to two. The bottoms of the two piston cylinders are both fixedly connected to the top of the sealing cylinder. The bottoms of the two sealing cylinders are respectively communicated with the tops of the two communicating pipes. Second piston plates are slidably arranged inside the two piston cylinders. Second abutting rods are fixedly connected to the tops of the two second piston plates. The tops of the two second abutting rods are fixedly connected to the same fixing ring.

[0012] The fixing ring is slidably sleeved on the outer periphery of the sampling cylinder. A locking structure for fixing between the fixing ring and the sampling cylinder is arranged between the fixing ring and the sampling cylinder.

[0013] After the fixing ring is fixed on the outer periphery of the sampling cylinder through the locking structure, when the sampling cylinder penetrates downward into the sampling port, first, the sealing cylinder at the bottom of the fixing ring will abut against the top of the sampling port. At this time, when the sampling cylinder continues to penetrate, the sampling cylinder will drive the fixing ring to move downward. At this time, the fixing ring will simultaneously drive the two second abutting rods and the second piston plates to move downward in the two piston cylinders respectively. At this time, the gases in the two piston cylinders will be respectively squeezed into the annular airbag through the two communicating pipes, so that the airbag can expand and block the sampling port. At this time, the sampling port is completely sealed. Thus, the pull rod can be pulled to drive the first abutting rod and the first piston to move upward in the sampling cylinder, so that negative pressure can be generated in the sampling cylinder, and then the propionyl chloride in the container can be sucked into the sampling cylinder through the collecting pipe.

[0014] Preferably, the locking structure includes a fixing rod, the bottom of the fixing rod is fixedly connected to a fixing ring, and a fixing bolt is threadedly connected to the middle of the fixing rod;

[0015] By rotating the fixing bolt, the fixing bolt can move relative to the fixing rod, and the end of the fixing bolt abuts against the outer wall of the sampling cylinder. Then, the fixing bolt is fixed through friction, and further, the fixing rod and the fixing ring are fixed to the sampling cylinder.

[0016] Preferably, a first sealing ring is provided on the inner circumference of the through groove. The inner circumference of the first sealing ring fits with the outer circumference of the sampling cylinder, and a second sealing ring is provided at the bottom of the sealing cylinder;

[0017] By providing the first sealing ring, the airtightness between the sealing cylinder and the sampling cylinder can be improved, thereby preventing the corrosive propionyl chloride from volatilizing and discharging from the gap between the sealing cylinder and the sampling cylinder. By providing the second sealing ring, the airtightness between the sealing cylinder and the sampling port can be improved, thereby preventing propionyl chloride from volatilizing and discharging from the gap between the sampling port and the sealing cylinder.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: A propionyl chloride sampling device of the present utility model:

[0019] 1. By providing a sealing structure, when sampling through the sampling cylinder in the sampling port, the sampling port can be temporarily sealed, thereby preventing propionyl chloride from volatilizing and discharging from the gap between the sampling port and the sampling cylinder before the airbag is inflated;

[0020] 2. By providing an inflation mechanism, when the sampling cylinder penetrates downward into the sampling port and presses the fixing ring, the annular airbag is automatically inflated, thereby completely sealing the sampling port. In this way, the annular airbag can be inflated without the aid of external tools, and the inflation of the annular airbag in this way is also relatively simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the first perspective three-dimensional view of the present utility model;

[0022] Figure 2 is the second perspective three-dimensional view of the present utility model;

[0023] Figure 3 is the sectional view of the sampling cylinder of the present utility model;

[0024] Figure 4 is the exploded view of the sealing structure of the present utility model;

[0025] Figure 5 is the Figure 1 enlarged view of the structure of part A of the present utility model.

[0026] In the figure:

[0027] 1. Sampling cylinder; 11. Collection tube; 12. Sealing cover; 13. First piston plate; 14. First abutting rod; 15. Pull rod; 16. Annular airbag;

[0028] 2. Sealing structure; 21. Sealing cylinder; 22. Through groove; 23. Connecting pipe;

[0029] 3. Inflating structure; 31. Piston cylinder; 32. Second piston plate; 33. Second abutting rod; 34. Fixed ring; 35. Locking structure;

[0030] 351. Fixed rod; 352. Fixed bolt;

[0031] 4. First sealing ring; 41. Second sealing ring. Detailed implementation manners

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0033] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0034] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Please refer to Figure 1-5 , the present utility model provides a technical solution: a propionyl chloride sampling device, including a sampling cylinder 1, a scale line is provided on the outer periphery of the sampling cylinder 1, a collecting pipe 11 is connected and arranged at the bottom of the sampling cylinder 1, a sealing cover 12 is threadedly connected to the end of the collecting pipe 11, a first piston plate 13 is slidably connected inside the sampling cylinder 1, a first abutting rod 14 is fixedly connected to the top of the first piston plate 13, a pull rod 15 is fixedly connected to the top of the first abutting rod 14, an annular airbag 16 is sleeved on the outer periphery of the sampling cylinder 1, the annular airbag 16 is slidably connected to the sampling cylinder 1, a sealing structure 2 for temporarily sealing the sampling port is provided on the outer periphery of the annular airbag 16, and an inflation structure 3 for inflating the annular airbag 16.

[0038] Furthermore, the sealing structure 2 includes a sealing cylinder 21, a through groove 22 is opened in the middle of the sealing cylinder 21, the sealing cylinder 21 is slidably sleeved on the outer periphery of the sampling cylinder 1, the sealing cylinder 21 is arranged above the annular airbag 16, a communicating pipe 23 is penetrated and arranged on the surface of the sealing cylinder 21, the number of the communicating pipes 23 is set to two, and the bottoms of the two communicating pipes 23 are both connected and communicated with the annular airbag 16.

[0039] Furthermore, the inflation structure 3 includes piston cylinders 31, the number of the piston cylinders 31 is set to two, the bottoms of the two piston cylinders 31 are both fixedly connected to the top of the sealing cylinder 21, the bottoms of the two sealing cylinders 21 are respectively connected and communicated with the tops of the two communicating pipes 23, second piston plates 32 are slidably arranged inside the two piston cylinders 31, second abutting rods 33 are fixedly connected to the tops of the two second piston plates 32, and a same fixing ring 34 is fixedly connected to the tops of the two second abutting rods 33;

[0040] The fixing ring 34 is slidably sleeved on the outer periphery of the sampling cylinder 1, and a locking structure 35 for fixing between the fixing ring 34 and the sampling cylinder 1 is arranged between the fixing ring 34 and the sampling cylinder 1.

[0041] Furthermore, the locking structure 35 includes a fixing rod 351, the bottom of the fixing rod 351 is fixedly connected to the fixing ring 34, and a fixing bolt 352 is threadedly connected to the middle of the fixing rod 351.

[0042] Further, a first sealing ring 4 is provided on the inner periphery of the through groove 22. The inner periphery of the first sealing ring 4 is fitted with the outer periphery of the sampling cylinder 1, and a second sealing ring 41 is provided at the bottom of the sealing cylinder 21.

[0043] The working principle and usage process of the utility model are as follows:

[0044] Before sampling, first rotate and remove the sealing cap 12 at the end of the collecting tube 11, and slide the fixing ring 34 to a suitable height on the outer periphery of the sampling cylinder 1, so as to adjust the length of the bottom end of the sampling cylinder 1 extending into the container. Then, by rotating the fixing bolt 352, the fixing bolt 352 can move relative to the fixing rod 351, and the end of the fixing bolt 352 abuts against the outer wall of the sampling cylinder 1. Furthermore, the fixing bolt 352 is fixed by friction, and then the fixing rod 351 and the fixing ring 34 are fixed to the sampling cylinder 1.

[0045] After that, the bottom end of the sampling cylinder 1 is inserted downward into the container through the sampling port. When the sampling cylinder 1 is inserted downward through the sampling port on the surface of the container, the sealing cylinder 21 on the outer periphery of the sampling cylinder 1 will abut against the top of the sampling port, thereby sealing the sampling port. Thus, the sampling port can be temporarily sealed before inflating the annular airbag 16, so as to prevent the corrosive propionyl chloride from volatilizing and discharging from the sampling port. At this time, continue to insert the sampling cylinder 1, and at the same time, the sampling cylinder 1 will drive the fixing ring 34 to move downward. At this time, the fixing ring 34 will drive the two second abutting rods 33 and the second piston plate 32 to move downward in the two piston cylinders 31 respectively. At this time, the gases in the two piston cylinders 31 will be respectively squeezed into the annular airbag 16 through the two connecting pipes 23, so that the airbag can expand and block the sampling port.

[0046] After the sampling port is completely sealed, the first abutting rod 14 and the first piston can be driven to move upward in the sampling cylinder 1 by pulling the pull rod 15, so that negative pressure can be generated in the sampling cylinder 1, and then the propionyl chloride in the container can be inhaled into the sampling cylinder 1 through the collecting tube 11.

[0047] When the sampling tube is taken out, the propionyl chloride sample in the sampling cylinder 1 can be taken out and discharged through the collecting tube 11 by pressing the pull rod 15 downward, so that the first piston plate 13 is driven to move downward in the sampling cylinder 1 by the first abutting rod 14.

Claims

1. A propionyl chloride sampling device, comprising a sampling cylinder (1), characterized in that: At the bottom of the sampling cylinder (1), a collecting pipe (11) is connected in communication. The end of the collecting pipe (11) is threadedly connected with a sealing cover (12). Inside the sampling cylinder (1), a first piston plate (13) is slidably connected. At the top of the first piston plate (13), a first abutting rod (14) is fixedly connected. At the top of the first abutting rod (14), a pull rod (15) is fixedly connected. An annular airbag (16) is sleeved on the outer periphery of the sampling cylinder (1). The annular airbag (16) is slidably connected with the sampling cylinder (1). A sealing structure (2) for temporarily sealing the sampling port and an inflation structure (3) for inflating the annular airbag (16) are provided on the outer periphery of the annular airbag (16).

2. The propionyl chloride sampling device according to claim 1, characterized in that: The sealing structure (2) includes a sealing cylinder (21). A through groove (22) is formed in the middle of the sealing cylinder (21). The sealing cylinder (21) is slidably sleeved on the outer periphery of the sampling cylinder (1). The sealing cylinder (21) is arranged above the annular airbag (16). A communicating pipe (23) is penetratingly arranged on the surface of the sealing cylinder (21). The number of the communicating pipes (23) is set to two. The bottoms of the two communicating pipes (23) are both connected in communication with the annular airbag (16).

3. The propionyl chloride sampling device according to claim 2, wherein: The inflation structure (3) includes piston cylinders (31). The number of the piston cylinders (31) is set to two. The bottoms of the two piston cylinders (31) are both fixedly connected to the top of the sealing cylinder (21). The bottoms of the two sealing cylinders (21) are respectively connected in communication with the tops of the two communicating pipes (23). Second piston plates (32) are slidably arranged inside the two piston cylinders (31). Second abutting rods (33) are fixedly connected to the tops of the two second piston plates (32). The tops of the two second abutting rods (33) are fixedly connected to the same fixing ring (34). The fixing ring (34) is slidably sleeved on the outer periphery of the sampling cylinder (1). A locking structure (35) for fixing between the fixing ring (34) and the sampling cylinder (1) is provided between the fixing ring (34) and the sampling cylinder (1).

4. The propionyl chloride sampling device according to claim 3, wherein: The locking structure (35) includes a fixing rod (351). The bottom of the fixing rod (351) is fixedly connected to the fixing ring (34). A fixing bolt (352) is threadedly connected to the middle of the fixing rod (351).

5. The propionyl chloride sampling device according to claim 2, wherein: A first sealing ring (4) is arranged on the inner periphery of the through groove (22). The inner periphery of the first sealing ring (4) is fitted with the outer periphery of the sampling cylinder (1). A second sealing ring (41) is arranged at the bottom of the sealing cylinder (21).

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