Sampling mechanism for moisture detector

Abstract

The utility model discloses a sampling mechanism for a moisture detector, which relates to the technical field of chemical agent sampling detection, and comprises a shell, a gas transmission pump and a reversing valve are fixedly arranged in the shell, a P port of the reversing valve is connected with a gas outlet end of the gas transmission pump, a T port of the reversing valve is connected with a gas inlet end of the gas transmission pump, and a gas outlet end of the gas transmission pump is connected with the reversing valve. One group of ports in the port A and the port B of the reversing valve is fixedly connected with a connecting pipe, the other end of the connecting pipe is connected with a buffer box in a matched mode, the buffer box is provided with a sampling mechanism, the sampling mechanism comprises a negative pressure pipe, one end of the negative pressure pipe is connected with the buffer box in a matched mode, and the other end of the negative pressure pipe is connected with a connecting joint in a matched mode. A pressure relief assembly is arranged on the connecting joint, and a sampling cylinder is fixedly arranged on the connecting joint. When the automatic cleaning device is used, airflow moving at a high speed drives cleaning liquid to wash the sampling barrel, so that the automatic cleaning effect is realized, the investment of labor cost is reduced, and the cleaning effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical agent sampling detection technical field, concretely relates to a sampling mechanism for water content detector. BACKGROUND

[0002] Chemical agent sampling detection is a process of extracting representative samples from a batch of chemical agents for analysis and testing. This process aims to infer the quality or characteristics of the entire batch of agents by examining a portion of the samples.

[0003] In real industrial manufacturing, the detection of water content in chemical agents is crucial. For example, in the pharmaceutical industry, when producing liquid agents, it is necessary to detect the water content of the agents to ensure their stability and effectiveness. During the sampling process, workers will extract a certain amount of liquid agent from the production batch and use a liquid dispenser or other tools to evenly divide it into multiple portions. Then, each sample will be analyzed by a specialized water content detection instrument to ensure the accuracy and reliability of the test results. This process helps to detect abnormal water content in agents in a timely manner and avoid quality problems.

[0004] The above prior art solution has the following disadvantages: the liquid dispenser or other tools are prone to residual after contacting the liquid agent, which requires additional time and effort for workers to thoroughly clean and disinfect, causing inconvenience. If not thoroughly cleaned, residual agents may contaminate subsequent detection or production batches, thereby threatening the accuracy of the test results. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a sampling mechanism for a water content detector to solve the technical problem of the liquid dispenser or other tools being prone to residual after contacting the liquid agent, which requires additional time and effort for workers to thoroughly clean and disinfect, causing inconvenience.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] The utility model provides a kind of sampling mechanism for moisture detector, including shell, gas transmission pump and reversing valve are fixedly arranged inside the shell, the P port of the reversing valve is connected with gas transmission pump outlet end, the T port of the reversing valve is connected with gas transmission pump inlet end, one set of ports in the A port and B port of the reversing valve is fixedly connected with adapter pipe, the other end of the adapter pipe is matched and connected with buffer box, sampling mechanism is provided on the buffer box, the sampling mechanism includes one end with the buffer box matched and connected negative pressure pipe, the other end of the negative pressure pipe is matched and connected with connecting joint, the connecting joint is provided with pressure relief assembly, sampling cylinder is fixedly arranged on the connecting joint, the sampling cylinder is transparent material cylinder structure, and side is marked with range, one side of the shell is provided with the cleaning mechanism for the outside of sampling cylinder and the liquid supply mechanism for the inside of sampling cylinder, fourth solenoid valve is matched and arranged between the negative pressure pipe and the buffer box, the negative pressure pipe is hydrophobic plastic material.

[0008] As a further scheme of the utility model: the liquid supply mechanism includes a liquid storage tank fixedly arranged inside the shell, a water pump fixedly arranged on one side of the liquid storage tank, a mixing pipe fixedly arranged on the output end of the water pump, and the other end of the mixing pipe is communicated with the negative pressure pipe.

[0009] As a further scheme of the utility model: a first solenoid valve is matched and arranged between the buffer box and the adapter pipe, a shunt connector is matched and arranged on the adapter pipe, a second solenoid valve is matched and arranged on the shunt connector, a gas guide pipe is matched and connected with the output end of the second solenoid valve, a flow collector is matched and arranged on the mixing pipe, and the other end of the gas guide pipe is matched and connected with the flow collector.

[0010] As a further scheme of the utility model: the cleaning mechanism includes a cleaning cylinder fixedly connected with the shell, a surrounding pipe is fixedly connected around the cleaning cylinder, a plurality of cleaning holes are formed in the surrounding pipe and communicated with the inside of the cleaning cylinder, one end of the surrounding pipe is blocked, and the other end is fixedly connected with a conveying pipe, the flow collector is a four-way connector, the other end of the conveying pipe is matched and connected with one group of interfaces of the flow collector, a liquid discharge assembly for conveying waste liquid is arranged at the bottom of the cleaning cylinder, ear plates are fixedly arranged on both sides of the sampling cylinder, and brackets matched with the ear plates are arranged on both sides of the top of the cleaning cylinder.

[0011] As a further scheme of the utility model: the liquid discharge assembly includes a waste liquid pipe, a liquid discharge pipe is fixedly arranged at the bottom of the shell, a water pipe is connected with the other end of the liquid discharge pipe, and the other end of the waste liquid pipe is fixedly connected with the liquid discharge pipe.

[0012] As a further scheme of the utility model: the bottom of the buffer box is funnel-shaped with the center low and the periphery high, a third solenoid valve is fixedly arranged at the center of the bottom of the buffer box, and the other end of the third solenoid valve is communicated with the liquid discharge pipe.

[0013] As a further scheme of the utility model: the pressure relief assembly includes the button of lateral sliding fit with the side wall of one side of the connecting joint, the other side of the connecting joint is provided with a pressure relief groove, the bottom of the pressure relief groove is provided with a pressure relief hole communicated with the inside of the connecting joint, one end of the button near the center of the connecting joint is fixedly connected with a transmission rod, the other end of the transmission rod is slidably penetrated through the bottom of the pressure relief groove and is fixedly connected with a sealing block for plugging the pressure relief hole in sliding fit with the pressure relief groove, the side surface of the sealing block is provided with a ventilation groove, and a spring is arranged in fit between the sealing block and the bottom of the pressure relief groove.

[0014] As a further scheme of the utility model: one group of ports of the A port and the B port of the reversing valve are fixedly connected with an air filter sleeve.

[0015] As a further scheme of the utility model: one side of the shell is fixedly provided with a controller electrically connected with the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the reversing valve and the gas transmission pump.

[0016] As a further scheme of the utility model: the first electromagnetic valve is arranged on the upper end of the buffer box.

[0017] The utility model discloses beneficial effects:

[0018] 1, the utility model discloses when washing, inserts the sampling cylinder into the inside of the washing cylinder, and the ear plate is put on the bracket, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the fourth electromagnetic valve is closed, and the water pump sends the washing liquid in the inside of the liquid storage tank into the inside of the negative pressure pipe.Adjust the state of the reversing valve, so that the high-pressure gas stream transported by the gas transmission pump can enter the air guide pipe along the connecting pipe, mix with the washing liquid, and push the washing liquid into the inside of the negative pressure pipe and the sampling cylinder, realize the flushing of the inner wall of the negative pressure pipe and the sampling cylinder.Simultaneously, the gas-liquid mixture in the current collector connector will surge into the inside of the conveying pipe, and then into the inside of the surrounding pipe, enter the inside of the washing cylinder through the washing hole, realize the flushing of the outer wall of the washing cylinder.The washing liquid is washed by the high-speed moving gas stream, realizes the effect of automatic washing, reduces the input of manpower cost, and guarantees the washing effect.

[0019] 2, the utility model discloses when using, when the washing liquid in the inside of the washing cylinder is cleaned, the first electromagnetic valve and the fourth electromagnetic valve are opened, the second electromagnetic valve is closed, and the water pump stops running, and the gas stream in the inside of the connecting pipe will enter the inside of the buffer box, the negative pressure pipe and the sampling cylinder in turn, and the washing liquid adhered to the side wall of the negative pressure pipe and the sampling cylinder is washed clean by the gas stream, realizes the drying operation, avoids the influence of the residual cleaning liquid on the accuracy of the next detection. DRAWINGS

[0020] The utility model will be further described in connection with the drawings.

[0021] Figure 1 It is the whole structure schematic diagram of the utility model;

[0022] Figure 2 It is the shell internal structure schematic diagram of the utility model;

[0023] Figure 3 It is the shell internal structure schematic diagram of the utility model;

[0024] Figure 4 It is the connecting joint structure schematic diagram of the utility model.

[0025] In the figure: 1, shell;2, controller;3, cleaning mechanism;301, conveying pipe;302, waste liquid pipe;303, cleaning cylinder;304, around pipe;305, bracket;4, reversing valve;5, air filter sleeve;6, link pipe;601, first electromagnetic valve;602, shunt connector;603, second electromagnetic valve;7, buffer box;701, third electromagnetic valve;702, fourth electromagnetic valve;8, sampling mechanism;801, negative pressure pipe;802, connecting joint;8021, button;8022, pressure reduction groove;8023, sealing block;8024, spring;8025, pressure reduction hole;8026, transmission rod;803, sampling cylinder;804, ear plate;9, liquid supply mechanism;901, liquid storage tank;902, water pump;903, mixing pipe;10, liquid discharge pipe;11, flow collecting connector;12, air guide pipe;13, gas transmission pump. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] As Figures 1-4 shown, a kind of water detection instrument is used sampling mechanism, including shell 1, gas transmission pump 13 and reversing valve 4 are fixedly arranged in shell 1, the reversing valve 4 can be electromagnetic reversing valve 4, the P port of reversing valve 4 is connected with gas transmission pump 13 outlet, the T port of reversing valve 4 is connected with gas transmission pump 13 inlet, one group of ports in the A port and B port of reversing valve 4 is fixedly connected with link pipe 6, another group of ports is fixedly connected with air filter sleeve 5, for avoiding dust from outside into reversing valve 4 inside.Gas transmission pump 13 is responsible for from the T port inside of reversing valve 4 suction, while gas flow is transported inside P port, by reversing valve 4, A port and B port input-output state can be switched, change gas flow delivery position.

[0028] The other end of the adapter pipe 6 is connected with a buffer box 7, and the buffer box 7 is provided with a sampling mechanism 8, which comprises a negative pressure pipe 801 connected with the buffer box 7 at one end, and a connecting joint 802 connected with the other end of the negative pressure pipe 801, wherein the connecting joint 802 is provided with a pressure relief assembly, and the connecting joint 802 is fixedly provided with a sampling cylinder 803, which is a transparent material cylinder structure and has a scale marked on the side surface. Figure 1 As shown in the drawings, the sampling cylinder 803 is provided with a conical structure at the lower end, and the end of the conical structure is provided with a tube for sampling. By controlling the negative pressure state in the sampling cylinder 803, the drug liquid can be extracted and sampled.

[0029] As shown in the drawings, Figure 4 The pressure relief assembly comprises a button 8021 which is in transverse sliding fit with the side wall of one side of the connecting joint 802, and a pressure relief groove 8022 is formed in the side wall of the other side of the connecting joint 802, wherein a pressure relief hole 8025 is formed in the bottom of the pressure relief groove 8022 and is in communication with the inside of the connecting joint 802, one end of the button 8021 close to the center of the connecting joint 802 is fixedly connected with a transmission rod 8026, and the button 8021 is pressed to drive the transmission rod 8026 to move. The other end of the transmission rod 8026 is slidably connected with a sealing block 8023 which is in sliding fit with the pressure relief groove 8022 and is used to block the pressure relief hole 8025, and a ventilation groove is formed in the side surface of the sealing block 8023, and a spring 8024 is arranged between the sealing block 8023 and the bottom of the pressure relief groove 8022. After the transmission rod 8026 moves, the sealing block 8023 moves away from the pressure relief hole 8025, the pressure relief hole 8025 is in communication with the ventilation groove, air enters the sampling cylinder 803 through the ventilation groove and the pressure relief hole 8025, so that the sampling cylinder 803 is filled with air, and the collected drug liquid flows out from the lower end of the sampling cylinder 803, thereby realizing the output of the drug liquid.

[0030] The shell 1 is provided with a cleaning mechanism 3 for cleaning the outside of the sampling cylinder 803 and a liquid supply mechanism 9 for supplying cleaning liquid to the inside of the negative pressure pipe 801 to clean the inside of the sampling cylinder 803.

[0031] As shown in the drawings, Figure 2As shown, the liquid supply mechanism 9 includes a liquid tank 901 fixedly arranged inside the shell 1, the liquid tank 901 is filled with cleaning liquid, the cleaning liquid is generally pure water, one side of the liquid tank 901 is fixedly provided with a water pump 902, the output end of the water pump 902 is fixedly provided with a mixing pipe 903, the other end of the mixing pipe 903 is communicated with the negative pressure pipe 801. The fourth electromagnetic valve 702 is arranged between the negative pressure pipe 801 and the buffer box 7, and the fourth electromagnetic valve 702 is closed to avoid the cleaning liquid from flowing into the buffer box 7. When the negative pressure pipe 801 and the sampling cylinder 803 are cleaned, the fourth electromagnetic valve 702 is closed, the water pump 902 sends the cleaning liquid in the liquid tank 901 into the negative pressure pipe 801 and the sampling cylinder 803, and the inner wall of the negative pressure pipe 801 and the sampling cylinder 803 is washed by the cleaning liquid, so that the cleaning effect is achieved.

[0032] The first electromagnetic valve 601 is arranged between the buffer box 7 and the adapter pipe 6, and the shunt connector 602 is arranged on the adapter pipe 6. Figure 3 As shown, the shunt connector 602 is provided with the second electromagnetic valve 603, and the output end of the second electromagnetic valve 603 is connected with the air guide pipe 12. The mixing pipe 903 is provided with the flow collector 11, and the other end of the air guide pipe 12 is connected with the flow collector 11. During cleaning, the first electromagnetic valve 601 is closed, the second electromagnetic valve 603 is opened, the state of the reversing valve 4 is adjusted, so that the high-pressure gas flow conveyed by the gas transmission pump 13 can enter the air guide pipe 12 along the adapter pipe 6, mix with the cleaning liquid, and push the cleaning liquid into the negative pressure pipe 801 and the sampling cylinder 803, so as to realize the washing of the inner wall of the negative pressure pipe 801 and the sampling cylinder 803.

[0033] It should be noted that the above-mentioned water pump 902 can be a micro electromagnetic pump, which has a small flow rate, and its main function is to form a gas-liquid mixture, the main kinetic energy of the gas-liquid mixture is provided by the high-speed flowing gas flow, so as to realize the washing of the inner wall of the negative pressure pipe 801 and the sampling cylinder 803. A check valve can be arranged on the air guide pipe 12 to prevent excessive cleaning liquid from flowing back into the air guide pipe 12.

[0034] The cleaning mechanism 3 includes a cleaning cylinder 303 fixedly connected with the shell 1, a surrounding pipe 304 is fixedly connected around the cleaning cylinder 303, a plurality of cleaning holes are formed in the surrounding pipe 304 and communicated with the inside of the cleaning cylinder 303, the cleaning liquid in the surrounding pipe 304 can enter the inside of the cleaning cylinder 303 through the cleaning holes, and the outer wall of the cleaning cylinder 303 is washed. Figure 2As shown, the manifold 11 is a four-way joint, the other end of the delivery pipe 301 is connected to a set of interfaces of the manifold 11, the bottom of the cleaning cylinder 303 is provided with a liquid discharge assembly for delivering waste liquid, the sampling cylinder 803 is fixedly provided with an ear plate 804 on both sides, and the top of the cleaning cylinder 303 is provided with a bracket 305 matched with the ear plate 804. During cleaning, the gas-liquid mixture in the manifold 11 will flow into the inside of the delivery pipe 301, and then into the inside of the surrounding pipe 304, and then into the inside of the cleaning cylinder 303 through the cleaning hole, so as to realize the flushing of the outer wall of the cleaning cylinder 303.

[0035] The liquid discharge assembly includes a waste liquid pipe 302, the bottom of the shell 1 is fixedly provided with a liquid discharge pipe 10, the other end of the liquid discharge pipe 10 is externally connected with a water pipe, and the other end of the waste liquid pipe 302 is fixedly connected with the liquid discharge pipe 10. The flushing of the liquid from the outer wall of the cleaning cylinder 303 or the inside of the cleaning cylinder 303 will flow into the inside of the liquid discharge pipe 10, and then into the inside of the waste liquid pipe 302, and then be discharged outward through the waste liquid pipe 302.

[0036] The bottom of the buffer box 7 is funnel-shaped with the middle being low and the periphery being high, the bottom center of the buffer box 7 is fixedly provided with a third electromagnetic valve 701, and the other end of the third electromagnetic valve 701 is communicated with the liquid discharge pipe 10. When the liquid is extracted too much, the buffer box 7 has a certain volume, which can avoid the backflow of the liquid along the connecting pipe 6 to the reversing valve 4, so as to avoid the corrosion of the reversing valve 4. When the inside of the buffer box 7 is cleaned with cleaning liquid, the fourth electromagnetic valve 702 can be opened, the cleaning liquid will flow to the inside of the buffer box 7, and the buffer box 7 is cleaned. When the buffer box 7 needs to be emptied, the third electromagnetic valve 701 can be opened, and the liquid in the inside of the buffer box 7 will enter the inside of the liquid discharge pipe 10 under the action of gravity, so as to realize the emptying of the buffer box 7. The first electromagnetic valve 601 is arranged at the upper end of the buffer box 7, so as to reduce the possibility that the liquid in the inside of the buffer box 7 is too much to immerse the first electromagnetic valve 601.

[0037] The negative pressure pipe 801 is made of hydrophobic plastic material, so as to facilitate the separation of the negative pressure pipe 801 from the cleaning liquid. When the cleaning of the liquid in the inside of the cleaning cylinder 303 is completed, the first electromagnetic valve 601 is opened, the second electromagnetic valve 603 is closed, and the water pump 902 stops running. The airflow in the connecting pipe 6 will enter the inside of the buffer box 7, the negative pressure pipe 801 and the sampling cylinder 803 in sequence, and the cleaning liquid attached to the side wall of the negative pressure pipe 801 and the sampling cylinder 803 will be washed clean by the airflow.

[0038] The shell 1 is fixedly provided with a controller 2 electrically connected with the first electromagnetic valve 601, the second electromagnetic valve 603, the third electromagnetic valve 701, the fourth electromagnetic valve 702, the reversing valve 4 and the gas transmission pump 13. The controller 2 controls the states of the components involved in the steps of cleaning, draining and drying, so as to reduce the complexity of operation, improve the cleaning efficiency, and make the use more simple.

[0039] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will now be explained in conjunction with specific application scenarios:

[0040] During use, controller 2 adjusts the state of reversing valve 4 to ensure that the interface between reversing valve 4 and connecting pipe 6 is under negative pressure. Connecting pipe 6, buffer box 7, negative pressure pipe 801, and cleaning cylinder 303 are all under negative pressure. The lower end of cleaning cylinder 303 is brought into contact with the liquid, and the liquid is forced into the cleaning cylinder 303 under negative pressure, thus achieving the sampling operation. When too much liquid is drawn, the buffer box 7 has a certain volume to prevent liquid from flowing back to reversing valve 4 along connecting pipe 6 and causing corrosion to reversing valve 4.

[0041] When it is necessary to output the liquid medicine, button 8021 can be pressed, which will drive the transmission rod 8026 to move. After the transmission rod 8026 moves, it will move the sealing block 8023 away from the pressure reducing hole 8025. The pressure reducing hole 8025 is connected to the ventilation groove, and air enters the sampling tube 803 along the ventilation groove and the pressure reducing hole 8025, thereby filling the sampling tube 803 with air. The collected liquid medicine flows out from the lower end of the sampling tube 803, realizing the output of the liquid medicine. After the samples are injected into multiple carriers, the moisture content detection device is used to detect the corresponding results for each group of liquid medicines.

[0042] During cleaning, the sampling tube 803 is inserted into the cleaning tube 303, and the ear plate 804 is placed on the bracket 305. The cleaning mode is activated by the controller 2, the first solenoid valve 601 is closed, the second solenoid valve 603 is opened, and the fourth solenoid valve 702 is closed. The water pump 902 sends the cleaning fluid from the storage tank 901 into the negative pressure tube 801. The state of the reversing valve 4 is adjusted so that the high-pressure airflow delivered by the gas transfer pump 13 can enter the air guide tube 12 along the connecting pipe 6, mix with the cleaning fluid, and push the cleaning fluid into the negative pressure tube 801 and the sampling tube 803, thereby flushing the inner walls of the negative pressure tube 801 and the sampling tube 803. At the same time, the gas-liquid mixture inside the manifold 11 flows into the delivery pipe 301, then into the surrounding pipe 304, and enters the cleaning tube 303 through the cleaning hole, thereby flushing the outer wall of the cleaning tube 303. The liquid rinsed from the outer wall or inside the cleaning cylinder 303 will flow into the drain pipe 10 and then into the waste liquid pipe 302, and be discharged outward through the waste liquid pipe 302.

[0043] When it is necessary to empty the buffer box 7, the drainage mode is activated by the controller 2, the third solenoid valve 701 is opened, the water pump 902 and the gas transfer pump 13 are closed, and the liquid inside the buffer box 7 will enter the drain pipe 10 under the action of gravity, thereby emptying the buffer box 7.

[0044] When the cleaning of the liquid medicine inside the cleaning cylinder 303 is completed, the drying mode can be started by the controller 2, the first electromagnetic valve 601 and the fourth electromagnetic valve 702 are opened, the second electromagnetic valve 603 is closed, the water pump 902 stops running, the airflow in the connecting pipe 6 will enter the buffer box 7, the negative pressure pipe 801 and the sampling cylinder 803 in sequence, the cleaning liquid attached to the side wall of the negative pressure pipe 801 and the sampling cylinder 803 is washed away by the airflow, and the drying operation is realized.

[0045] The above describes one embodiment of the present application in detail, but the content is only a preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. A sampling mechanism for a moisture analyzer, characterized in that... The system includes a housing (1), inside which a gas transfer pump (13) and a reversing valve (4) are fixedly installed. The P port of the reversing valve (4) is connected to the outlet of the gas transfer pump (13), and the T port of the reversing valve (4) is connected to the inlet of the gas transfer pump (13). A connecting pipe (6) is fixedly connected to one of the A and B ports of the reversing valve (4). The other end of the connecting pipe (6) is connected to a buffer box (7). A sampling mechanism (8) is provided on the buffer box (7). The sampling mechanism (8) includes a negative pressure pipe (801) with one end connected to the buffer box (7), and the other end of the negative pressure pipe (801) is connected to... A connecting connector (802) is provided, and a pressure relief component is provided on the connecting connector (802). A sampling tube (803) is fixedly provided on the connecting connector (802). The sampling tube (803) is a transparent cylindrical structure with the range marked on the side. A cleaning mechanism (3) for cleaning the outside of the sampling tube (803) and a liquid supply mechanism (9) for delivering cleaning fluid into the negative pressure tube (801) and cleaning the inside of the sampling tube (803) are provided on one side of the outer shell (1). A fourth solenoid valve (702) is provided between the negative pressure tube (801) and the buffer box (7). The negative pressure tube (801) is made of hydrophobic plastic.

2. The sampling mechanism for a moisture analyzer according to claim 1, characterized in that, The liquid supply mechanism (9) includes a liquid storage tank (901) fixedly installed inside the outer shell (1). A water pump (902) is fixedly installed on one side of the liquid storage tank (901). A mixing pipe (903) is fixedly installed at the output end of the water pump (902). The other end of the mixing pipe (903) is connected to the negative pressure pipe (801).

3. The sampling mechanism for a moisture analyzer according to claim 2, characterized in that, A first solenoid valve (601) is provided between the buffer box (7) and the connecting pipe (6). A flow divider (602) is provided on the connecting pipe (6). A second solenoid valve (603) is provided on the flow divider (602). An air guide pipe (12) is connected to the output end of the second solenoid valve (603). A flow collector (11) is provided on the mixing pipe (903). The other end of the air guide pipe (12) is connected to the flow collector (11).

4. The sampling mechanism for a moisture analyzer according to claim 3, characterized in that, The cleaning mechanism (3) includes a cleaning cylinder (303) fixedly connected to the outer shell (1). A surrounding tube (304) is fixedly connected around the cleaning cylinder (303). Multiple sets of cleaning holes communicating with the inside of the cleaning cylinder (303) are opened on the surrounding tube (304). One end of the surrounding tube (304) is sealed and the other end is fixedly connected to a conveying pipe (301). The collector (11) is a four-way connector. The other end of the conveying pipe (301) is connected to a set of interfaces of the collector (11). A drain assembly for conveying waste liquid is provided at the bottom of the cleaning cylinder (303). Ear plates (804) are fixedly provided on both sides of the sampling cylinder (803). Brackets (305) that cooperate with the ear plates (804) are provided on both sides of the top of the cleaning cylinder (303).

5. The sampling mechanism for a moisture analyzer according to claim 4, characterized in that, The drainage assembly includes a waste liquid pipe (302), a drainage pipe (10) is fixed at the bottom of the outer shell (1), a water pipe is connected to the other end of the drainage pipe (10), and the other end of the waste liquid pipe (302) is fixedly connected to the drainage pipe (10).

6. The sampling mechanism for a moisture analyzer according to claim 5, characterized in that, The bottom of the buffer box (7) is funnel-shaped with a low center and a high periphery. A third solenoid valve (701) is fixedly installed at the center of the bottom of the buffer box (7). The other end of the third solenoid valve (701) is connected to the drain pipe (10).

7. The sampling mechanism for a moisture analyzer according to claim 1, characterized in that, The pressure relief assembly includes a button (8021) that slides laterally with one side wall of the connecting joint (802). A pressure relief groove (8022) is provided on the other side wall of the connecting joint (802). A pressure relief hole (8025) communicating with the inside of the connecting joint (802) is provided at the bottom of the pressure relief groove (8022). A transmission rod (8026) is fixedly connected to one end of the button (8021) near the center of the connecting joint (802). The other end of the transmission rod (8026) slides through the bottom of the pressure relief groove (8022) and is fixedly connected to a sealing block (8023) that slides with the pressure relief groove (8022) and is used to block the pressure relief hole (8025). A ventilation groove is provided on the side of the sealing block (8023). A spring (8024) is provided between the sealing block (8023) and the bottom of the pressure relief groove (8022).

8. The sampling mechanism for a moisture analyzer according to claim 1, characterized in that, An air filter sleeve (5) is fixedly connected to one of the ports A and B of the reversing valve (4).

9. A sampling mechanism for a moisture analyzer according to claim 1, characterized in that, A controller (2) is fixedly installed on one side of the outer casing (1) and is electrically connected to the first solenoid valve (601), the second solenoid valve (603), the third solenoid valve (701), the fourth solenoid valve (702), the reversing valve (4), and the gas transfer pump (13).

10. A sampling mechanism for a moisture analyzer according to claim 3, characterized in that, The first solenoid valve (601) is located at the upper end of the buffer box (7).

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