A sealed sampling device for easy disassembly and assembly of sampling tubes

Abstract

This utility model discloses a sealed sampling device in the field of sealed sampler technology that facilitates the disassembly and assembly of sampling tubes. It includes a housing, a mounting rod, a drying chamber, and a hot air chamber. The mounting rod is fixedly connected to the lower left side of the rear wall of the inner cavity of the housing. The drying chamber is fixedly connected to the right side of the bottom of the inner cavity of the housing. The hot air chamber is fixedly connected to the middle of the bottom of the housing. A fixing sleeve is fixedly connected to the front end of the mounting rod. The sampling tube body is inserted into the inner cavity of the fixing sleeve. Guide rods are fixedly connected to the upper and lower sides of the left and right side walls of the fixing sleeve. A slider is slidably connected to the outer side wall of the guide rod. This sealed sampling device, which facilitates the disassembly and assembly of sampling tubes, has a reasonable structural design, making it easy to disassemble and assemble the sampling tube, improving the device's performance, and continuously absorbing moisture to keep the inside of the housing dry, preventing moisture condensation on the sampling tube and causing contamination.

Description

Technical Field

[0001] This utility model relates to the field of sealed sampler technology, specifically a sealed sampling device that facilitates the disassembly and assembly of sampling tubes. Background Technology

[0002] A sealed sampler is a specialized tool used to collect liquid, gas, or solid samples from pipes, containers, reaction vessels, and other equipment without damaging the original state of the sample. Its core function is to prevent the sample from coming into contact with the external environment during collection, transfer, and storage through a sealed design, thereby ensuring the representativeness, authenticity, and stability of the sample. It is widely used in fields such as petrochemicals, pharmaceuticals, food, environmental protection, and metallurgy, where the purity and analytical precision of the samples are extremely important.

[0003] Chinese patent publication number CN221445485U discloses "a sealed sampling device, comprising a main body, a sampling component installed inside the main body, the sampling component including an inlet sampling tube, one end of which is fixedly connected to the surface of the main body, the other end of which extends through the interior of the main body, a sampling valve fixedly connected to the other end of which extends through the interior of the main body, an outlet sampling tube fixedly connected to the other end of the sampling valve, a sampling bottle threadedly connected to the lower end of the sampling valve, and nitrogen oxides fixedly connected to the side surface of the main body." The device has an air inlet pipe, a sampling glove fixedly connected inside the main body, a bottle-taking port on the side surface of the main body, a sealed door movably connected inside the bottle-taking port, an exhaust pipe fixedly connected to the side surface of the main body, and a pressure gauge fixedly connected to the top surface of the main body. This patent can prevent the sample from coming into contact with air during the sampling process, thus preventing the sample moisture content from becoming inaccurate and ensuring the accuracy of the sample moisture content. However, the above patent does not allow for quick disassembly and assembly of the sampling tube during use, making the device inconvenient to use. Therefore, we propose a sealed sampling device with a sampling tube that is easy to disassemble and assemble. Utility Model Content

[0004] The purpose of this utility model is to provide a sealed sampling device with an easy-to-disassemble and assemble sampling tube, so as to solve the problem that the patent mentioned in the background art can prevent the sample from coming into contact with air during the sampling process and thus prevent the sample moisture content from becoming inaccurate, ensuring the accuracy of the sample moisture content. However, the above patent cannot quickly disassemble and assemble the sampling tube during use, making the device inconvenient to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealed sampling device for easy assembly and disassembly of sampling tubes, comprising a housing, a mounting rod, a drying chamber, and a hot air chamber. The mounting rod is fixedly connected to the lower left side of the rear side wall of the inner cavity of the housing. The drying chamber is fixedly connected to the right side of the bottom of the inner cavity of the housing. The hot air chamber is fixedly connected to the middle of the bottom of the housing. A fixing sleeve is fixedly connected to the front end of the mounting rod. A sampling tube body is inserted into the inner cavity of the fixing sleeve. Guide rods are fixedly connected to the upper and lower sides of the left and right side walls of the fixing sleeve. A slider is slidably connected to the outer side wall of the guide rod. A connecting rod is fixedly connected to the top and bottom of the slider. A clamping plate is fixedly connected to the end of the connecting rod. A screw is rotatably connected to the middle of the left and right side walls of the fixing sleeve. A movable block is screwed to the outer side wall of the screw. The movable block is fixedly connected between the inner side walls of the slider.

[0006] As a further description of the above technical solution:

[0007] A crossbar is fixedly connected to the lower side of the left side wall of the inner cavity of the box, a fixing block is fixedly connected to the end of the crossbar, and a sealing gasket is fixedly connected to the bottom of the fixing block. A gas-liquid separator is fixedly connected to the upper left side of the rear side wall of the inner cavity of the box, and a liquid tank is fixedly connected to the middle of the left side of the rear side wall of the inner cavity of the box.

[0008] As a further description of the above technical solution:

[0009] A first connecting pipe is fixedly connected to the top of the liquid tank, and the end of the first connecting pipe is fixedly connected to the bottom of the gas-liquid separator. A first liquid sampling valve is fixedly connected to the middle of the outer side wall of the first connecting pipe via a flange. A second connecting pipe is fixedly connected to the bottom of the liquid tank, and the end of the second connecting pipe passes through the fixing block and extends to the bottom of the sealing gasket. A second liquid sampling valve is fixedly connected to the middle of the outer side wall of the second connecting pipe via a flange.

[0010] As a further description of the above technical solution:

[0011] A gas tank is fixedly connected to the upper right side of the rear wall of the inner cavity of the box. A third connecting pipe is fixedly connected to the top of the gas tank. The end of the third connecting pipe is fixedly connected to the upper right side of the gas-liquid separator. A pressure gauge is fixedly connected to the middle of the outer side wall of the third connecting pipe. An exhaust pipe is fixedly connected to the bottom of the gas tank. The end of the exhaust pipe passes through the box and extends to the middle of the right side wall of the box. An exhaust valve is fixedly connected to the middle of the outer side wall of the exhaust pipe through a flange.

[0012] As a further description of the above technical solution:

[0013] A feed pipe is fixedly connected to the upper side of the left side wall of the housing. The end of the feed pipe passes through the housing and extends into the inner cavity of the housing. The end of the feed pipe is also fixedly connected to the upper side of the left side wall of the gas-liquid separator. A liquid inlet valve is fixedly connected to the middle of the outer side wall of the feed pipe via a flange. A purge pipe is fixedly connected to the middle of the left side wall of the housing. The end of the purge pipe passes through the housing and extends into the inner cavity of the housing. The end of the purge pipe is also fixedly connected to the right side of the outer side wall of the feed pipe. A purge valve is fixedly connected to the middle of the outer side wall of the purge pipe via a flange.

[0014] As a further description of the above technical solution:

[0015] A partition is fixedly connected between the inner sidewalls of the drying oven. A drive motor is fixedly connected to the top left side of the inner cavity of the drying oven. A rotating wheel is fixedly connected to the end of the power output shaft of the drive motor. A moisture-absorbing plate is fixedly connected between the inner sidewalls of the rotating wheel. An air outlet pipe is fixedly connected to the upper side of the right sidewall of the drying oven. The end of the air outlet pipe passes through the oven body and extends to the lower side of the right sidewall of the oven body.

[0016] As a further description of the above technical solution:

[0017] Heating wires are fixedly connected between the inner walls of the hot air chamber. An air inlet is opened on the left side wall of the hot air chamber. A fan is fixedly connected to the right side wall of the hot air chamber. The fan is connected to the hot air chamber and the drying chamber through a pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This sealing sampling device, which facilitates the assembly and disassembly of sampling tubes, allows for easy removal of the sampling tube body by rotating a screw, which moves a movable block to the left and right sides. The movable block then moves a slider, which in turn moves a clamping plate to the left and right sides via a connecting rod. This causes the clamping plate to release the sampling tube body, allowing it to be removed from the fixed sleeve. Conversely, by inserting the sampling tube body into the fixed sleeve and rotating the screw in the opposite direction, the movable block moves inward, causing the slider to move. This causes the clamping plate at the end of the connecting rod to close inward, clamping the sampling tube body for quick installation. This design facilitates the assembly and disassembly of the sampling tube, improving the device's effectiveness.

[0020] 2. This sealed sampling device, which facilitates the disassembly and assembly of the sampling tube, absorbs moisture from inside the chamber through a moisture-absorbing plate inside the rotating wheel, keeping the chamber dry. The rotating wheel is then driven by a drive motor, causing the moisture-absorbing plate on the moisture-absorbing side to rotate to the right side of the partition. At the same time, the heating wire is activated to generate hot air, which is then transported to the drying chamber by a fan. The hot air dries the moisture-absorbing plate, allowing it to continuously absorb moisture from inside the chamber. This ensures that the device can continuously absorb moisture, keeping the chamber dry and preventing moisture from condensing on the sampling tube and causing contamination. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a sealed sampling device for easy disassembly and assembly of sampling tubes proposed in this utility model.

[0022] Figure 2 This is a front sectional view of a sealed sampling device for easy disassembly and assembly of sampling tubes proposed in this utility model.

[0023] Figure 3 This is a partial right-side sectional view of a sealed sampling device for easy disassembly and assembly of a sampling tube, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the fixing sleeve structure of a sealing sampling device for easy assembly and disassembly of sampling tubes proposed in this utility model.

[0025] Figure 5 This is a schematic diagram of the rotating structure of a sealed sampling device for easy assembly and disassembly of sampling tubes proposed in this utility model.

[0026] In the diagram: 100, housing; 110, crossbar; 120, fixing block; 121, sealing gasket; 130, gas-liquid separator; 140, liquid tank; 141, first connecting pipe; 142, first liquid sampling valve; 143, second connecting pipe; 144, second liquid sampling valve; 150, gas tank; 160, third connecting pipe; 161, pressure gauge; 170, exhaust pipe; 171, exhaust valve; 180, feed pipe; 181, liquid inlet valve; 190, purging. Pipe; 191, purge valve; 200, mounting rod; 210, fixing sleeve; 220, sampling tube body; 230, guide rod; 240, slider; 250, connecting rod; 260, clamping plate; 270, screw; 280, movable block; 300, drying oven; 310, partition plate; 320, drive motor; 330, rotating wheel; 340, moisture absorption plate; 350, air outlet pipe; 400, hot air box; 410, heating wire; 420, air inlet; 430, fan. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] This utility model provides a sealed sampling device with an easily detachable sampling tube, which facilitates the assembly and disassembly of the sampling tube, improves the device's performance, and continuously absorbs moisture, keeping the inside of the housing dry and preventing moisture condensation on the sampling tube and causing contamination. Please refer to [link to relevant documentation]. Figure 1-5 It includes a box body 100, a mounting rod 200, a drying oven 300, and a hot air box 400;

[0031] Please see Figure 1-4The mounting rod 200 is fixedly connected to the lower left side of the rear side wall of the inner cavity of the housing 100. A crossbar 110 is fixedly connected to the lower left side of the inner side wall of the housing 100. A fixing block 120 is fixedly connected to the end of the crossbar 110. A sealing gasket 121 is fixedly connected to the bottom of the fixing block 120. A gas-liquid separator 130 is fixedly connected to the upper left side of the rear side wall of the inner cavity of the housing 100. A liquid tank 140 is fixedly connected to the middle left side of the rear side wall of the inner cavity of the housing 100. A first connecting pipe 141 is fixedly connected to the top of the liquid tank 140. The end of the first connecting pipe 141 is fixedly connected to the bottom of the gas-liquid separator 130. A first liquid sampling valve 142 is fixedly connected to the middle of the outer side wall of the first connecting pipe 141 via a flange. The bottom of the liquid tank 140 is fixedly connected to... A second connecting pipe 143 is provided, the end of which passes through the fixing block 120 and extends to the bottom of the sealing gasket 121. A second liquid sampling valve 144 is fixedly connected to the middle of the outer wall of the second connecting pipe 143 via a flange. A gas tank 150 is fixedly connected to the upper right side of the rear side wall of the inner cavity of the housing 100. A third connecting pipe 160 is fixedly connected to the top of the gas tank 150. The end of the third connecting pipe 160 is fixedly connected to the upper right side of the gas-liquid separator 130. A pressure gauge 161 is fixedly connected to the middle of the outer wall of the third connecting pipe 160. An exhaust pipe 170 is fixedly connected to the bottom of the gas tank 150. The end of the exhaust pipe 170 passes through the housing 100 and extends to the middle of the right side wall of the housing 100. An exhaust valve 171 is fixedly connected to the middle of the side wall via a flange. An inlet pipe 180 is fixedly connected to the upper side of the left side wall of the housing 100. The end of the inlet pipe 180 penetrates the housing 100 and extends into the inner cavity of the housing 100. The end of the inlet pipe 180 is also fixedly connected to the upper side of the left side wall of the gas-liquid separator 130. An inlet valve 181 is fixedly connected to the middle of the outer side wall of the inlet pipe 180 via a flange. A purge pipe 190 is fixedly connected to the middle of the left side wall of the housing 100. The end of the purge pipe 190 penetrates the housing 100 and extends into the inner cavity of the housing 100. The end of the purge pipe 190 is fixedly connected to the right side of the outer side wall of the inlet pipe 180. A purge valve 191 is fixedly connected to the middle of the outer side wall of the purge pipe 190 via a flange. Mounting rod 20 A fixed sleeve 210 is fixedly connected to the front end of the 0. A sampling tube body 220 is inserted into the inner cavity of the fixed sleeve 210. Guide rods 230 are fixedly connected to the left and right side walls and the upper and lower sides of the fixed sleeve 210. A slider 240 is slidably connected to the outer side wall of the guide rod 230. A connecting rod 250 is fixedly connected to the top and bottom of the slider 240. A clamping plate 260 is fixedly connected to the end of the connecting rod 250. A screw 270 is rotatably connected to the middle of the left and right side walls of the fixed sleeve 210. A movable block 280 is screwed to the outer side wall of the screw 270. The movable block 280 is fixedly connected between the inner side walls of the slider 240. By rotating the screw 270, the screw 270 drives the movable block 280 to move to the left and right sides, and then the movable block 280 drives the slider 240 to move.The slider 240, via the connecting rod 250, moves the clamping plate 260 to the left and right, thereby releasing the sampling tube body 220 and allowing it to be removed from the fixing sleeve 210. This facilitates the removal of the sampling tube body 220. Conversely, by inserting the sampling tube body 220 into the fixing sleeve 210 and rotating the screw 270 in the opposite direction, the movable block 280 moves inward, causing it to move the slider 240. This causes the clamping plate 260 at the end of the connecting rod 250 to close inward, clamping the sampling tube body 220 for quick installation.

[0032] In summary, this makes the sampling tube of the device easy to assemble and disassemble, thus improving the device's performance.

[0033] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 A drying oven 300 is fixedly connected to the bottom right side of the inner cavity of the box body 100. A hot air box 400 is fixedly connected to the middle of the bottom of the box body 100. A partition 310 is fixedly connected between the inner side walls of the drying oven 300. A drive motor 320 is fixedly connected to the top left side of the inner cavity of the drying oven 300. A rotating wheel 330 is fixedly connected to the end of the power output shaft of the drive motor 320. A moisture-absorbing plate 340 is fixedly connected between the inner side walls of the rotating wheel 330. An air outlet pipe 350 is fixedly connected to the upper side of the right side wall of the drying oven 300. The end of the air outlet pipe 350 passes through the box body 100 and extends to the lower side of the right side wall of the box body 100. An electric heating wire 410 is fixedly connected between the inner side walls of the hot air box 400. An air inlet 420 is provided on the left side wall of the hot air box 400, and a fan 430 is fixedly connected to the right side wall of the hot air box 400. The fan 430 is connected to the hot air box 400 and the drying box 300 through a pipe. The moisture-absorbing plate 340 inside the rotating wheel 330 absorbs the moisture inside the box 100, keeping the inside of the box 100 dry. Then, the rotating wheel 330 is driven by the drive motor 320 to rotate, so that the moisture-absorbing plate 340 on the side that absorbs moisture is rotated to the right side of the partition 310. At the same time, the heating wire 410 is activated to generate hot air, so that the fan 430 delivers the hot air to the drying box 300, so that the hot air dries the moisture-absorbing plate 340, and then the moisture-absorbing plate 340 can continuously absorb the moisture inside the box 100.

[0034] In summary, this allows the device to continuously absorb moisture, keeping the inside of the chamber 100 dry and preventing moisture from condensing on the sampling tube and causing contamination.

[0035] In practical use, those skilled in the art first install the device at the work site. Then, during subsequent use, by opening the purge valve 191, clean liquid or gas enters through the purge pipe 190 to clean the sampling path. After cleaning, the purge valve 191 is closed, and the inlet valve 181 is opened, allowing the sampling medium to flow from the inlet pipe 180 into the gas-liquid separator 130. The gas and liquid are then separated in the gas-liquid separator 130, allowing the gas to enter the gas tank 150 through the third connecting pipe 160. Then, by opening the third connecting pipe 160... A liquid sampling valve 142 allows liquid to flow into the liquid tank 140 through the first connecting pipe 141. Then, the second liquid sampling valve 144 is opened, allowing liquid to flow into the sampling tube body 220 through the second connecting pipe 143, thus completing the sampling process. When the sampling tube body 220 needs to be disassembled, the screw 270 is rotated, causing the movable block 280 to move left and right. The movable block 280 then moves the slider 240, which in turn moves the clamping plate 260 left and right via the connecting rod 250. The movement causes the clamping plate 260 to loosen the sampling tube body 220, allowing the sampling tube body 220 to be pulled out of the fixing sleeve 210 and removed. Conversely, by inserting the sampling tube body 220 into the fixing sleeve 210 and rotating the screw 270 in the opposite direction, the movable block 280 moves inward, which in turn moves the slider 240, causing the clamping plate 260 at the end of the connecting rod 250 to close inward, thus clamping the sampling tube body 220 and allowing the sampling tube to be installed. When the device is not in use, the main body 220 absorbs moisture from the inside of the chamber 100 through the moisture-absorbing plate 340 inside the rotating wheel 330, keeping the inside of the chamber 100 dry. Then, the rotating wheel 330 is driven by the drive motor 320 to rotate, so that the moisture-absorbing plate 340 on the side that absorbs moisture is rotated to the right side of the partition 310. At the same time, the heating wire 410 is activated to generate hot air, so that the fan 430 delivers the hot air to the drying chamber 300, so that the hot air dries the moisture-absorbing plate 340, and then the moisture-absorbing plate 340 continues to absorb moisture from the inside of the chamber 100.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sealed sampling device for easy assembly and disassembly of sampling tubes, characterized in that: The assembly includes a housing (100), a mounting rod (200), a drying oven (300), and a hot air chamber (400). The mounting rod (200) is fixedly connected to the lower left side of the rear wall of the inner cavity of the housing (100). The drying oven (300) is fixedly connected to the right side of the bottom of the inner cavity of the housing (100). The hot air chamber (400) is fixedly connected to the middle of the bottom of the housing (100). A fixing sleeve (210) is fixedly connected to the front end of the mounting rod (200). A sampling tube body (220) is inserted into the inner cavity of the fixing sleeve (210). 10) has guide rods (230) fixedly connected to the upper and lower sides of the left and right sidewalls. A slider (240) is slidably connected to the outer sidewall of the guide rod (230). A connecting rod (250) is fixedly connected to the top and bottom of the slider (240). A clamping plate (260) is fixedly connected to the end of the connecting rod (250). A screw (270) is rotatably connected to the middle of the left and right sidewalls of the fixed sleeve (210). A movable block (280) is screwed to the outer sidewall of the screw (270). The movable block (280) is fixedly connected between the inner sidewalls of the slider (240).

2. The sealed sampling device with an easy-to-disassemble sampling tube according to claim 1, characterized in that: A crossbar (110) is fixedly connected to the lower side of the left side wall of the inner cavity of the box (100). A fixing block (120) is fixedly connected to the end of the crossbar (110). A sealing gasket (121) is fixedly connected to the bottom of the fixing block (120). A gas-liquid separator (130) is fixedly connected to the upper left side of the rear side wall of the inner cavity of the box (100). A liquid tank (140) is fixedly connected to the middle left side of the rear side wall of the inner cavity of the box (100).

3. The sealed sampling device with an easy-to-disassemble sampling tube according to claim 2, characterized in that: A first connecting pipe (141) is fixedly connected to the top of the liquid tank (140), and the end of the first connecting pipe (141) is fixedly connected to the bottom of the gas-liquid separator (130). A first liquid sampling valve (142) is fixedly connected to the middle of the outer side wall of the first connecting pipe (141) through a flange. A second connecting pipe (143) is fixedly connected to the bottom of the liquid tank (140), and the end of the second connecting pipe (143) passes through the fixing block (120) and extends to the bottom of the sealing gasket (121). A second liquid sampling valve (144) is fixedly connected to the middle of the outer side wall of the second connecting pipe (143) through a flange.

4. The sealed sampling device with an easy-to-disassemble sampling tube according to claim 1, characterized in that: A gas tank (150) is fixedly connected to the upper right side of the rear wall of the inner cavity of the housing (100). A third connecting pipe (160) is fixedly connected to the top of the gas tank (150). The end of the third connecting pipe (160) is fixedly connected to the upper right side of the gas-liquid separator (130). A pressure gauge (161) is fixedly connected to the middle of the outer side wall of the third connecting pipe (160). An exhaust pipe (170) is fixedly connected to the bottom of the gas tank (150). The end of the exhaust pipe (170) passes through the housing (100) and extends to the middle of the right side wall of the housing (100). An exhaust valve (171) is fixedly connected to the middle of the outer side wall of the exhaust pipe (170) through a flange.

5. A sealed sampling device for easy disassembly and assembly of sampling tubes according to claim 1, characterized in that: A feed pipe (180) is fixedly connected to the upper side of the left side wall of the housing (100). The end of the feed pipe (180) passes through the housing (100) and extends into the inner cavity of the housing (100). The end of the feed pipe (180) is fixedly connected to the upper side of the left side wall of the gas-liquid separator (130). A liquid inlet valve (181) is fixedly connected to the middle of the outer side wall of the feed pipe (180) through a flange. A purge pipe (190) is fixedly connected to the middle of the left side wall of the housing (100). The end of the purge pipe (190) passes through the housing (100) and extends into the inner cavity of the housing (100). The end of the purge pipe (190) is fixedly connected to the right side of the outer side wall of the feed pipe (180). A purge valve (191) is fixedly connected to the middle of the outer side wall of the purge pipe (190) through a flange.

6. A sealed sampling device with an easily detachable sampling tube according to claim 1, characterized in that: A partition (310) is fixedly connected between the inner sidewalls of the drying chamber (300). A drive motor (320) is fixedly connected to the top left side of the inner cavity of the drying chamber (300). A rotating wheel (330) is fixedly connected to the end of the power output shaft of the drive motor (320). A moisture-absorbing plate (340) is fixedly connected between the inner sidewalls of the rotating wheel (330). An air outlet pipe (350) is fixedly connected to the upper side of the right sidewall of the drying chamber (300). The end of the air outlet pipe (350) passes through the chamber body (100) and extends to the lower side of the right sidewall of the chamber body (100).

7. A sealed sampling device with an easily detachable sampling tube according to claim 1, characterized in that: Heating wires (410) are fixedly connected between the inner walls of the hot air box (400). An air inlet (420) is provided on the left side wall of the hot air box (400). A fan (430) is fixedly connected to the right side wall of the hot air box (400). The fan (430) is connected to the hot air box (400) and the drying box (300) through a pipe.

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