Airtight sampling device for anhydrous hydrogen fluoride

Abstract

The utility model relates to the technical field of chemical medicine sampling, and discloses an anhydrous hydrogen fluoride closed sampling device which comprises a sampling tank, a sampling mechanism is arranged on the right side of the sampling tank, an external cooling mechanism is arranged at the bottom of the sampling tank, a handle is fixedly connected to the top of the sampling tank, and an external heat preservation sleeve is arranged on the surface of the sampling tank. A liquid discharging pipe is fixedly connected to the left end of the top of the sampling tank, a liquid discharging valve is arranged on the surface of the liquid discharging pipe, during sampling, medicine is extracted through cooperation of a sampling hose and a liquid extraction pump, and the medicine is conveyed into the sampling tank through a first sampling pipe and a second sampling pipe to be stored; fixing bolts on the first flange, the second flange, the third flange and the fourth flange are taken down to separate the sampling pipe I, the sampling pipe II and the sampling hose, so that the sampling pipe I, the sampling pipe II and the sampling hose are cleaned or replaced, and the service life of the device can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical drug sampling, in particular to a closed sampling device for anhydrous hydrogen fluoride. Background Art

[0002] Anhydrous hydrofluoric acid, also known as anhydrous hydrogen fluoride, is a widely used chemical product. It is a colorless fuming liquid with a concentration of more than 99% hydrofluoric acid. It is easily vaporized under reduced pressure or high temperature. It is mainly used for the preparation of fluoride salts, fluorohaloalkanes, fluorine refrigerants, etching glass, impregnating wood, electrolyzing elemental fluorine, etc.

[0003] According to a sampling device suitable for fluorination reaction disclosed on the patent website (authorization announcement number: CN208488292U), "The utility model discloses a sampling device suitable for fluorination reaction, including a fluorination reactor and a sampling tube extending into the liquid surface of the fluorination reactor, the sampling tube is connected to the pressure-resistant sampling valve on the upper part of the fluorination reactor, the outlet pipe of the pressure-resistant sampling valve is connected to the sampler, the outlet pipe of the sampler is connected to the separator, the upper part of the separator is connected to the anhydrous hydrogen fluoride condensation recovery device, and the bottom of the separator is connected to the sample collection tank. It has the characteristics of simple structure, closed sampling, easy operation, strong applicability, samples collected in the early stage can be collected and reused, environmental protection, no wastewater, and high safety."

[0004] Based on the above, the applicant believes that there are the following defects:

[0005] The sampling device suitable for fluorination reaction comprises a fluorination reactor and a sampling tube extending into the liquid surface of the fluorination reactor, wherein the sampling tube is connected to a pressure-resistant sampling valve on the upper part of the fluorination reactor. The device draws hydrofluoric acid into a container through a pipeline for sampling, but the pipeline of the device is not easy to disassemble and maintenance is relatively cumbersome. Utility Model Content

[0006] The utility model aims to provide a closed sampling device for anhydrous hydrogen fluoride to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a closed sampling device for anhydrous hydrogen fluoride, comprising a sampling tank, a sampling mechanism is arranged on the right side of the sampling tank, and an external cooling mechanism is arranged at the bottom of the sampling tank;

[0008] The sampling mechanism includes a sampling tube 1, which is fixedly connected to the top right side of the sampling tank, a first flange is fixedly connected to the right side of the sampling tube 1, a second flange is arranged on the right side of the first flange, a sealing gasket 1 is arranged inside the first flange, a sampling tube 2 is fixedly connected to the right side of the second flange, a third flange is fixedly connected to the bottom of the sampling tube 2, a fourth flange is arranged at the bottom of the third flange, a sealing gasket 2 is arranged inside the third flange, a liquid pump is arranged at the bottom of the fourth flange, a sampling hose is fixedly connected to the bottom of the liquid pump, a fixed sleeve is fixedly connected to the surface of the sampling tube 1, and a pressure gauge is installed on the top of the fixed sleeve. When sampling, the medicine is extracted through the cooperation of the sampling hose and the liquid pump, and is transported to the sampling tank for storage through the sampling tube 1 and the sampling tube 2. When the sampling mechanism needs to be disassembled, the sampling tube 1, the sampling tube 2 and the sampling hose can be separated by removing the fixing bolts on the first flange, the second flange, the third flange and the fourth flange, so as to clean or replace them, which can effectively increase the service life of the device.

[0009] Preferably, the first sealing gasket is arranged inside the first flange and the second flange, and the second sealing gasket is arranged inside the third flange and the fourth flange.

[0010] Preferably, the liquid pump is arranged on the surface of the sampling hose, and the fixing sleeve and the pressure gauge are arranged on the left side of the first flange.

[0011] Preferably, the external cooling mechanism includes a placement box, which is arranged at the bottom of the sampling tank, a sampling tank fixing frame is fixedly connected to the bottom of the placement box, a water tank is fixedly connected to the left and right sides of the placement box, a water pipe is arranged on the top of the water tank, and a water valve is arranged on the surface of the water pipe. When the device is sampling, the sampling tank is cooled by the external cooling mechanism, ice is added to the inside of the placement box through the box, and water is added to the water tank to cool it down to prevent the temperature from affecting the internal medicines.

[0012] Preferably, the water tank, water pipe and water valve are provided in two groups and are symmetrically distributed on the left and right sides of the placement box surface.

[0013] Preferably, a handle is fixedly connected to the top of the sampling tank, an external insulation sleeve is provided on the surface of the sampling tank, a drain pipe is fixedly connected to the left end of the top of the sampling tank, and a drain valve is provided on the surface of the drain pipe.

[0014] Compared with the prior art, the utility model provides a closed sampling device for anhydrous hydrogen fluoride, which has the following beneficial effects:

[0015] 1. The anhydrous hydrogen fluoride closed sampling device is provided with a sampling mechanism. During sampling, the medicine is extracted by the cooperation of the sampling hose and the liquid pump, and is transported to the sampling tank for storage through the sampling tube 1 and the sampling tube 2. When the sampling mechanism needs to be disassembled, the sampling tube 1, the sampling tube 2 and the sampling hose can be separated by removing the fixing bolts on the first flange, the second flange, the third flange and the fourth flange, so that they can be cleaned or replaced, which can effectively increase the service life of the device.

[0016] 2. The anhydrous hydrogen fluoride closed sampling device is provided with an external cooling mechanism. When the device is sampling, the sampling tank is cooled by the external cooling mechanism, ice is added to the inside of the box through the box placement box, and water is added through the water tank to reduce the temperature to prevent the temperature from affecting the internal medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the sampling tank structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the sampling mechanism of the utility model structure;

[0021] Figure 4 This is a schematic diagram of the external cooling mechanism of the utility model structure.

[0022] In the figure: 1. sampling tank; 2. handle; 3. external insulation sleeve; 4. drain pipe; 5. drain valve; 6. sampling mechanism; 61. sampling tube 1; 62. first flange; 63. second flange; 64. sealing gasket 1; 65. sampling tube 2; 66. third flange; 67. fourth flange; 68. sealing gasket 2; 69. liquid pump; 601. sampling hose; 602. fixing sleeve; 603. pressure gauge; 7. external cooling mechanism; 71. placement box; 72. sampling tank fixing frame; 73. water tank; 74. water pipe; 75. water valve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model provides the following technical solutions:

[0026] Embodiment 1

[0027] See also Figure 1-3 , a closed sampling device for anhydrous hydrogen fluoride comprises a sampling tank 1, a sampling mechanism 6 is arranged on the right side of the sampling tank 1, and an external cooling mechanism 7 is arranged at the bottom of the sampling tank 1;

[0028] The sampling mechanism 6 includes a sampling tube 61, which is fixedly connected to the top right side of the sampling tank 1. A first flange 62 is fixedly connected to the right side of the sampling tube 61, a second flange 63 is arranged on the right side of the first flange 62, a sealing gasket 64 is arranged inside the first flange 62, a sampling tube 65 is fixedly connected to the right side of the second flange 63, a third flange 66 is fixedly connected to the bottom of the sampling tube 65, a fourth flange 67 is arranged at the bottom of the third flange 66, a sealing gasket 68 is arranged inside the third flange 66, a liquid pump 69 is arranged at the bottom of the fourth flange 67, and a sampling hose 601 is fixedly connected to the bottom of the liquid pump 69. A fixing sleeve 602 is fixedly connected to the surface of the tube 1 61, and a pressure gauge 603 is installed on the top of the fixing sleeve 602. When sampling, the medicine is extracted through the cooperation of the sampling hose 601 and the liquid pump 69, and transported to the inside of the sampling tank 1 for storage through the sampling tube 1 61 and the sampling tube 2 65. When the sampling mechanism 6 needs to be disassembled, the sampling tube 1 61, the sampling tube 2 65 and the sampling hose 601 can be separated by removing the fixing bolts on the first flange 62, the second flange 63, the third flange 66 and the fourth flange 67, so as to clean or replace them, which can effectively increase the service life of the device;

[0029] The sealing gasket 1 64 is disposed inside the first flange 62 and the second flange 63 , and the sealing gasket 2 68 is disposed inside the third flange 66 and the fourth flange 67 ;

[0030] The liquid pump 69 is arranged on the surface of the sampling hose 601 , and the fixing sleeve 602 and the pressure gauge 603 are arranged on the left side of the first flange 62 .

[0031] Embodiment 2

[0032] See also Figure 1-4 , and on the basis of the first embodiment, the external cooling mechanism 7 further comprises a placement box 71, the placement box 71 is arranged at the bottom of the sampling tank 1, the bottom of the placement box 71 is fixedly connected with a sampling tank fixing frame 72, the left and right sides of the placement box 71 are fixedly connected with water tanks 73, the top of the water tank 73 is provided with a water pipe 74, and the surface of the water pipe 74 is provided with a water valve 75. When the device is sampling, the sampling tank 1 is cooled by the external cooling mechanism 7, ice is added to the inside of the placement box 71 through the box, and water is added through the water tank 73 to cool down, so as to prevent the temperature from affecting the internal medicine;

[0033] There are two groups of water tanks 73, water pipes 74 and water valves 75, which are symmetrically distributed on the left and right sides of the surface of the placement box 71;

[0034] A handle 2 is fixedly connected to the top of the sampling tank 1 , an external heat preservation sleeve 3 is arranged on the surface of the sampling tank 1 , a drain pipe 4 is fixedly connected to the left end of the top of the sampling tank 1 , and a drain valve 5 is arranged on the surface of the drain pipe 4 .

[0035] In actual operation, when the device is used, the medicine is extracted by the cooperation of the sampling hose 601 and the liquid pump 69 during sampling, and transported to the sampling tank 1 for storage through the sampling tube 1 61 and the sampling tube 2 65. When the sampling mechanism 6 needs to be disassembled, the sampling tube 1 61, the sampling tube 2 65 and the sampling hose 601 can be separated by removing the fixing bolts on the first flange 62, the second flange 63, the third flange 66 and the fourth flange 67, so as to clean or replace them. When sampling, the pressure inside the sampling tube 1 61 is detected in real time by the pressure gauge 603 to prevent sampling errors. When the device is sampling, the sampling tank 1 is cooled by the external cooling mechanism 7, ice is added to the inside of the box 71, and water is added to the water tank 73 to reduce the temperature to prevent the temperature from affecting the internal medicine. Finally, when the medicine needs to be discharged, the drain valve 5 is opened to discharge the medicine through the drain pipe 4.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A closed sampling device for anhydrous hydrogen fluoride, comprising a sampling tank (1), characterized in that: A sampling mechanism (6) is provided on the right side of the sampling tank (1), and an external cooling mechanism (7) is provided on the bottom of the sampling tank (1); The sampling mechanism (6) comprises a sampling tube 1 (61), wherein the sampling tube 1 (61) is fixedly connected to the top right side of the sampling tank (1), a first flange (62) is fixedly connected to the right side of the sampling tube 1 (61), a second flange (63) is arranged on the right side of the first flange (62), a sealing gasket 1 (64) is arranged inside the first flange (62), a sampling tube 2 (65) is fixedly connected to the right side of the second flange (63), a third flange (66) is fixedly connected to the bottom of the sampling tube 2 (65), a fourth flange (67) is arranged at the bottom of the third flange (66), a sealing gasket 2 (68) is arranged inside the third flange (66), a liquid pump (69) is arranged at the bottom of the fourth flange (67), a sampling hose (601) is fixedly connected to the bottom of the liquid pump (69), a fixed sleeve (602) is fixedly connected to the surface of the sampling tube 1 (61), and a pressure gauge (603) is installed on the top of the fixed sleeve (602).

2. A closed sampling device for anhydrous hydrogen fluoride according to claim 1, characterized in that: The sealing gasket 1 (64) is arranged inside the first flange (62) and the second flange (63), and the sealing gasket 2 (68) is arranged inside the third flange (66) and the fourth flange (67).

3. The closed sampling device for anhydrous hydrogen fluoride according to claim 1, characterized in that: The liquid pump (69) is arranged on the surface of the sampling hose (601), and the fixing sleeve (602) and the pressure gauge (603) are arranged on the left side of the first flange (62).

4. The closed sampling device for anhydrous hydrogen fluoride according to claim 1, characterized in that: The external cooling mechanism (7) comprises a placement box (71), the placement box (71) is arranged at the bottom of the sampling tank (1), the bottom of the placement box (71) is fixedly connected to a sampling tank fixing frame (72), the left and right sides of the placement box (71) are fixedly connected to a water tank (73), the top of the water tank (73) is provided with a water pipe (74), and the surface of the water pipe (74) is provided with a water valve (75).

5. The closed sampling device for anhydrous hydrogen fluoride according to claim 4, characterized in that: The water tank (73), water pipe (74) and water valve (75) are provided in two groups and are symmetrically distributed on the left and right sides of the surface of the placement box (71).

6. The closed sampling device for anhydrous hydrogen fluoride according to claim 1, characterized in that: The top of the sampling tank (1) is fixedly connected with a handle (2), the surface of the sampling tank (1) is provided with an external heat-insulating sleeve (3), the left end of the top of the sampling tank (1) is fixedly connected with a drainage pipe (4), and the surface of the drainage pipe (4) is provided with a drainage valve (5).

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