Automatic sampler for chemical testing

Abstract

The present invention relates to the field of sampling technology, and in particular to an automatic sampler for chemical inspection, comprising a mounting plate, etc.; the mounting plate is connected to a sampling box via a lifting assembly, a sampling port is provided on the circumference of the sampling box, a blocking assembly for blocking the sampling port is provided on the outer wall of the sampling box, a sampling container is fixedly connected to the sampling port in the sampling box, a piston plate is sealingly slidably connected to one end of the sampling container away from the sampling port, a piston rod is fixedly connected to the side of the piston plate away from the sampling port, and the piston rod is driven to slide by a first driving assembly. The present invention is provided with components such as a piston plate, and the present invention cleans the piston plate during its movement, and can also clean the sampled liquid while it is being pushed out by the piston plate, thereby shortening the time for the next sampling and improving the efficiency of sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling, in particular to an automatic sampler for chemical detection. Background Art

[0002] Chemical testing refers to the process of testing and analyzing chemicals, chemical raw materials, chemical reaction products, and various substances in their production processes. It is an important means to ensure the quality of chemical products, guarantee production safety, and control environmental pollution. In order to take samples, most existing chemical reactors use lifting locks to hang the sampling container to the sampling position. On the one hand, the amount of sample taken is insufficient. For some testing processes that require larger samples, multiple sampling may be required to meet the testing requirements, which increases the complexity of the operation. On the other hand, the sampling container cannot be cleaned in time after each sampling, resulting in the components of the previous batch of samples remaining inside the container, which in turn causes cross contamination. Although a small number of existing containers are equipped with cleaning devices, they are cleaned after all the samples in the sampling container are poured out each time, which consumes a long time and has low cleaning efficiency. In view of this, the present invention provides a chemical testing automatic sampler that at least solves one of the technical problems mentioned above. Summary of the Invention

[0003] In order to overcome the technical problems mentioned in the background technology, the present invention provides an automatic sampler for chemical testing.

[0004] A chemical testing automatic sampler includes a mounting plate, the mounting plate is connected to a sampling box via a lifting assembly, a sampling port is provided on the circumference of the sampling box, a blocking assembly for blocking the sampling port is provided on the outer wall of the sampling box, a sampling container is fixedly connected to the sampling port in the sampling box, an end of the sampling container away from the sampling port is sealed and slidably connected to a piston plate, a side of the piston plate away from the sampling port is fixedly connected to a piston rod, the piston rod is driven to slide by a first driving assembly, a first elastic member is provided between the piston plate and the sampling container, and a liquid inlet partition is provided at the end of the sampling container near the sampling port;

[0005] The piston plate includes a first baffle plate that is sealed, slidably and rotatably connected to the sampling container, and a second baffle plate that is sealed, slidably connected to the sampling container. A ring is connected between the first baffle plate and the second baffle plate. One end of the ring is fixed to the first baffle plate, and the other end is in sealing contact with the second baffle plate. The other end of the ring is fixed to the piston rod. An "I" shape is formed between the first baffle plate, the ring and the second baffle plate. A nozzle is circumferentially installed on the side wall of the ring. A sleeve is rotatably connected to the side wall of the second baffle plate away from the sampling port. Jet holes are circumferentially provided on the side wall of the sleeve. The nozzle transports cleaning liquid through the liquid delivery component, and the sleeve transports hot gas through the gas delivery component. The piston rod is fixed to the sleeve, and the piston rod is driven by the second drive component to achieve rotation.

[0006] As a further preferred solution, the lifting assembly includes a first gear and a second gear rotatably connected to the top surface of the mounting plate, the first gear and the second gear are engaged with each other, a handle is fixed to the top surface of the first gear, a first screw is threadedly connected to the mounting plate, the first screw is connected to the second gear by a key and a keyway, and a first protective cover for protecting the first screw is installed between the mounting plate and the sampling box.

[0007] As a further preferred solution, the sealing assembly includes a baffle plate slidably connected to the outer wall of the sampling box for sealing the sampling port, a second elastic member is arranged between the baffle plate and the sampling box, a second protective cover is provided on the second elastic member, and a float is fixed to the top of the baffle plate.

[0008] As a further preferred solution, the first drive assembly includes a second screw rotatably connected to the center of the sampling box, a frustum block is threadedly connected to the second screw, the frustum block abuts against the piston rod, a third gear is fixed to the bottom end of the second screw, and a sixth gear rotatably connected to the sampling box and meshing with the third gear is driven by the first drive motor to achieve rotation.

[0009] As a further preferred embodiment, the second drive assembly includes a first bevel gear rotatably connected to the side wall of the sampling container, the first bevel gear is connected to the piston rod through the relationship between a key and a keyway, a fourth gear is circumferentially connected to the sampling box, a second bevel gear meshing with the first bevel gear is fixed to the center axis of the fourth gear, a ring gear meshing with all the fourth gears is rotatably connected to the sampling box, a fifth gear meshing with the ring gear is circumferentially connected to the sampling box, and the fifth gear is driven by the second drive motor to rotate.

[0010] As a further preferred solution, a cleaning block is circumferentially mounted on the side wall of the collar, and a through hole is provided on the cleaning block.

[0011] As a further preferred solution, a first partition and a second partition are fixedly connected in the sampling box, thereby dividing the sampling box into three layers. The sampling container is arranged in the middle layer, the upper layer is a water storage layer, the water storage layer is filled with cleaning liquid, and the lower layer is a waste liquid layer. The liquid delivery component includes a first fixed plate fixedly connected to the second water partition, a first water pipe is fixedly connected to the first fixed plate, the first water pipe is connected to the inside of the ring, a pump body is circumferentially arranged on the bottom surface of the first partition, one end of the pump body is connected to the water storage layer through a water pipe, and the other end is connected to the first water pipe through a hose.

[0012] As a further preferred solution, the liquid inlet partition includes a third fixed plate fixedly connected to one end of the sampling port in the sampling container, a movable plate is provided between the third fixed plate and the first water baffle, the movable plate is slidably and rotatably connected inside the sampling container, the movable plate and the third fixed plate are connected by a telescopic tube, one end of the telescopic tube is rotatably connected to the third fixed plate, and the other end is fixed to the movable plate, the two ends of the telescopic tube are connected by a telescopic rod, the telescopic rod has a built-in third elastic member, a card slot is provided on one side of the movable plate close to the first water baffle, and a protrusion matching the card slot is provided on one side of the first water baffle close to the movable plate.

[0013] As a further preferred solution, a cleaning tube is also fixed to the top of the outer wall of the sampling container, and the cleaning tube is connected to the sampling container through the first tube, the second tube and the third tube, wherein the first tube passes through the third fixed plate and reaches the center of the third fixed plate and then connects with the telescopic tube, the second tube and the third tube are both located near the sampling port, and the second tube is closer to the sampling port. Initially, the movable plate blocks the third tube under the action of the telescopic rod, and the fourth tube and the fifth tube are provided at the lower part of the sampling container, and the fourth tube and the fifth tube connect the sampling container and the waste liquid layer.

[0014] As a further preferred solution, the gas delivery assembly includes a first one-way valve and a second one-way valve arranged on the cleaning pipe, and a third one-way valve is also arranged on the third pipeline. The first screw is hollow, and an air hole is arranged at the bottom end of the first screw. A fourth fixed plate is fixed on the second water-blocking plate, and the fourth fixed plate is rotatably connected to the sleeve. The air hole is connected to the cleaning pipe through a stretching tube, and a diverter valve is arranged at the connection between the stretching tube and the cleaning pipe. The other end of the diverter valve is connected to the sleeve through a telescopic hose, and the telescopic hose is fixed to the fourth fixed plate.

[0015] The present invention has the following advantages:

[0016] 1. The present invention is provided with components such as a piston plate. The present invention performs cleaning during the movement of the piston plate, and can perform cleaning work simultaneously when the sampled liquid is pushed out by the piston plate, thereby increasing the time for the next sampling and improving the efficiency of sampling.

[0017] 2. The present invention is provided with multiple sampling containers, which can extract a large amount of sampling liquid at one time, reducing the complexity of the operation and avoiding the operator from taking samples multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 Schematic diagram of the sampling box and other components of the present invention.

[0020] Figure 3It is a cross-sectional view of the sampling box and other components of the present invention.

[0021] Figure 4 Schematic diagram of the sampling container and other components of the present invention.

[0022] Figure 5 It is a schematic diagram of the second screw and other components of the present invention.

[0023] Figure 6 Schematic diagram of the first helical gear and other components of the present invention.

[0024] Figure 7 This is a first state diagram of the piston plate of the present invention.

[0025] Figure 8 This is an exploded view of the second water barrier of the present invention.

[0026] Figure 9 It is a cross-sectional view of the first screw and other components of the present invention.

[0027] Figure 10 This is an exploded view of the movable panel and other components of the present invention.

[0028] Figure 11 This is a second state diagram of the piston plate of the present invention.

[0029] Figure 12 This is a third state diagram of the piston plate of the present invention.

[0030] Among them: 101, mounting plate, 102, sampling box, 1021, sampling port, 103, sampling container, 104, first elastic member, 105, piston rod, 201, first water baffle, 202, second water baffle, 203, collar, 204, nozzle, 205, sleeve, 2051, air jet hole, 301, first gear, 302, second gear, 303, handle, 304, first screw, 3041, air vent, 305, first protective cover, 401, baffle, 402, second elastic member, 403, second protective cover, 404, float, 501, second screw, 502, frustum, 503, third gear, 504, sixth gear, 505, first drive motor, 601, first bevel gear, 602, fourth gear, 603, second bevel gear Wheel, 604, ring gear, 605, fifth gear, 606, second drive motor, 701, cleaning block, 7011, through hole, 801, first partition, 802, second partition, 8011, water storage layer, 8021, waste liquid layer, 803, first fixed plate, 804, pump body, 806, first water pipe, 811, third fixed plate, 812, movable plate, 813, telescopic tube, 814, telescopic rod, 815, third elastic member, 816, slot, 817, protrusion, 818, fourth fixed plate, 821, cleaning pipe, 822, first pipe, 823, second pipe, 824, third pipe, 825, fourth pipe, 826, fifth pipe, 831, first one-way valve, 832, second one-way valve, 841, stretching tube, 842, telescopic hose. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to specific embodiments. It should be noted that, unless otherwise specified or limited, terms such as "dispose," "install," "connect," and "connect" should be understood in a broad sense. For example, "connect" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; or it may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] A chemical testing automatic sampler, such as Figures 1-12As shown, it includes a mounting plate 101, and the mounting plate 101 is connected to the sampling box 102 through a lifting assembly. Specifically, the lifting assembly includes a first gear 301 and a second gear 302 rotatably connected to the top surface of the mounting plate 101. The first gear 301 and the second gear 302 are engaged with each other. A handle 303 is fixed to the top surface of the first gear 301. A first screw 304 is threadedly connected to the mounting plate 101. The first screw 304 is connected to the second gear 302 by a key and a keyway. A first protection member for protecting the first screw 304 is installed between the mounting plate 101 and the sampling box 102. The sheath 305, the first protective sheath 305 can prevent the first screw 304 from being chemically corroded, thereby extending the service life of the device. The sampling box 102 is provided with six sampling ports 1021 on the circumference, and a blocking component for blocking the sampling ports 1021 is provided on the outer wall of the sampling box 102. Specifically, the blocking component includes a shielding plate 401 slidably connected to the outer wall of the sampling box 102 for blocking the sampling ports 1021. A second elastic member 402 is provided between the shielding plate 401 and the sampling box 102. The second elastic member 402 is specifically a spring. The second elastic member 402 is sleeved with a first The second protective cover 403 can protect the second elastic member 402 from chemical corrosion, thereby extending the service life of the device. The top of the baffle 401 is fixed with a float 404. The sampling box 102 is fixed with a sampling container 103 at the sampling port 1021. The end of the sampling container 103 away from the sampling port 1021 is sealed and slidably connected with a piston plate. The side of the piston plate away from the sampling port 1021 is fixed with a piston rod 105. The piston rod 105 is driven by a first drive component to achieve sliding. Specifically, the first drive component includes a rotating connection to the sampling box 1 02, a second screw 501 is threadedly connected to a frustum block 502, the frustum block 502 is in contact with the piston rod 105, a third gear 503 is fixed to the bottom end of the second screw 501, a sixth gear 504 is rotatably connected to the sampling box 102 and meshed with the third gear 503, the sixth gear 504 is driven by a first drive motor 505 to rotate, a first elastic member 104 is provided between the piston plate and the sampling container 103, the first elastic member 104 is specifically a spring, and a liquid inlet partition is provided at one end of the sampling container 103 near the sampling port 1021.

[0033] The piston plate includes a first baffle 201 which is sealed, slidably and rotatably connected to the sampling container 103, and a second baffle 202 which is sealed, slidably connected to the sampling container 103. A collar 203 is connected between the first baffle 201 and the second baffle 202. One end of the collar 203 is fixed to the first baffle 201, and the other end is in sealing contact with the second baffle 202. The other end of the collar 203 is fixed to the piston rod 105. An "I" shape is formed among the first baffle 201, the collar 203 and the second baffle 202. A nozzle 204 is circumferentially installed on the side wall of the collar 203. A cleaning block 701 is circumferentially installed on the side wall of the collar 203. The cleaning block 701 can specifically be a brush. A through hole 7011 is provided on the cleaning block 701 to facilitate the passage of liquid. The second baffle 202 is away from the sampling container. A sleeve 205 is rotatably connected to the side wall of the sample port 1021. An air jet hole 2051 is circumferentially provided on the side wall of the sleeve 205. The nozzle 204 delivers cleaning liquid through the liquid delivery component, and the sleeve 205 delivers hot gas through the gas delivery component. The piston rod 105 is fixedly connected to the sleeve 205. The piston rod 105 is driven to rotate by a second drive component. Specifically, the second drive component includes a first bevel gear 601 rotatably connected to the side wall of the sampling container 103. The first bevel gear 601 is connected to the piston rod 105 through a key and a keyway. A fourth gear 602 is circumferentially rotatably connected to the sampling box 102. A second bevel gear 603 meshing with the first bevel gear 601 is fixedly connected to the central axis of the fourth gear 602. A gear ring 604 meshing with all fourth gears 602 is rotatably connected to the sampling box 102. A fifth gear 605 meshing with the ring gear 604 is rotatably connected to the sampling box 102 . The fifth gear 605 is driven by a second drive motor 606 to rotate.

[0034] Furthermore, a first partition 801 and a second partition 802 are fixedly connected in the sampling box 102, thereby dividing the sampling box 102 into three layers, and the sampling container 103 is arranged in the middle layer, the upper layer is a water storage layer 8011, the water storage layer 8011 is filled with cleaning liquid, and the lower layer is a waste liquid layer 8021, wherein one end of the second screw 501, the sixth gear 504, the fourth gear 602, the ring gear 604 and the fifth gear 605 are all rotatably connected to the top surface of the first partition 801, and the liquid delivery assembly includes a first fixed plate 803 fixed on the second water baffle 202, and a first water pipe 806 is fixed on the first fixed plate 803, and the first water pipe 806 is connected to the inside of the ring 203. A pump body 804 is circumferentially arranged on the bottom surface of the first partition 801, and one end of the pump body 804 is connected to the water storage layer 8011 through a water pipe, and the other end is connected to the first water pipe 806 through a hose;

[0035] The liquid inlet partition includes a third fixed plate 811 fixedly connected to one end of the sampling container 103 near the sampling port 1021, a movable plate 812 is provided between the third fixed plate 811 and the first water barrier 201, the movable plate 812 is slidably and rotatably connected to the inside of the sampling container 103, and the movable plate 812 is connected to the third fixed plate 811 through a telescopic tube 813, one end of the telescopic tube 813 is rotatably connected to the third fixed plate 811, and the other end is fixed to the movable plate 812, and the two ends of the telescopic tube 813 are connected by a telescopic rod 814, the telescopic rod 814 is multi-section, and the telescopic rod 814 has a built-in third elastic member 815, the third elastic member 815 15 is specifically a spring, and the third elastic member 815 is used to assist the telescopic rod 814 in resetting. A slot 816 is provided on one side of the movable plate 812 close to the first water barrier 201, and a protrusion 817 that matches the slot 816 is provided on one side of the first water barrier 201 close to the movable plate 812. A cleaning pipe 821 is also fixed to the top of the outer wall of the sampling container 103. The cleaning pipe 821 is connected to the sampling container 103 through the first pipe 822, the second pipe 823 and the third pipe 824. The first pipe 822 passes through the third fixed plate 811 and reaches the center of the third fixed plate 811 and then connects to the telescopic pipe 813. The second pipe 823 and the third pipe 824 are both located near the sampling port 1021, and the second pipe 823 is closer to the sampling port 1021. Initially, the movable plate 812 blocks the third pipe 824 under the action of the telescopic rod 814. The lower part of the sampling container 103 is provided with a fourth pipe 825 and a fifth pipe 826. The fourth pipe 825 and the fifth pipe 826 connect the sampling container 103 and the waste liquid layer 8021. The gas delivery assembly includes a first one-way valve 831 and a second one-way valve 832 provided on the cleaning pipe 821. A third one-way valve is also provided on the third pipe 824. The first screw 304 is hollow, and an air hole 3041 is provided at the bottom end of the first screw 304. A fourth fixed plate 818 is fixed to the second water-blocking plate 202. The fourth fixed plate 818 is rotatably connected to the sleeve 205. The air hole 3041 is connected to the cleaning pipe 821 through the stretching tube 841, and a diverter valve is provided at the connection between the stretching tube 841 and the cleaning pipe 821. The other end of the diverter valve is connected to the sleeve 205 through the telescopic hose 842, and the telescopic hose 842 is fixed to the fourth fixed plate 818.

[0036] The working principle of the present invention is as follows: the mounting plate 101 is placed on the open pipe of the chemical reactor, and then the handle 303 is rotated, and then the handle 303 drives the first gear 301 to rotate, and the first gear 301 drives the second gear 302 to rotate through meshing transmission, and then the second gear 302 drives the first screw 304 to rotate, and then the first screw 304 moves downward through the threaded connection relationship with the mounting plate 101, so that the sampling box 102 enters the sampled liquid, and as the sampling box 102 continues to move downward, the float 404 will pull the baffle 401 to move upward, so that the baffle 401 no longer blocks the sampling port 1021, and then the sampled liquid directly enters the sampling container 103, and at the same time, the first drive motor 505 is started, and the output shaft of the first drive motor 505 drives the sixth gear The wheel 504 rotates, and the sixth gear 504 drives the third gear 503 to rotate, and the third gear 503 drives the second screw 501 to rotate, and the second screw 501 drives the frustum block 502 to move upward through the threaded connection, thereby resetting the first elastic member 104, and the first elastic member 104 drives the piston plate to reset, and the reset of the piston plate generates a negative pressure, which can assist the sampled liquid to enter the sampling container 103; after the sampling is completed, the handle 303 is rotated in the opposite direction, and the first screw 304 drives the sampling box 102 to move upward, and the sampling box 102 is separated from the sampled liquid, and the second elastic member 402 drives the shielding plate 401 to reset, and the shielding plate 401 again blocks the sampling port 1021 to prevent the sampled liquid in the sampling container 103 from flowing out;

[0037] A hot air pipe is connected to the top of the first screw 304, and then a container is used to collect the sampled liquid in the sampling container 103. The shielding plate 401 is manually pushed upward, and the first drive motor 505 and the second drive motor 606 are started at the same time, so that the first drive motor 505 drives the frustum block 502 to move downward, and the frustum block 502 squeezes the piston rod 105, so that the piston rod 105 moves toward the sampling port 1021, and then drives the piston plate to move toward the sampling port 1021. The output shaft of the second drive motor 606 drives the fifth gear 605 to rotate, and then the fifth gear 605 drives the ring gear 604 to rotate through meshing transmission, and then the ring gear 604 drives all the fourth gears 602 to rotate, and then the fourth gear 602 drives the second bevel gear 603 to rotate, and the second bevel gear 603 drives the first bevel gear 601 to rotate, so that the piston rod 1 05 rotates, and then the piston rod 105 drives the first water baffle 201, the collar 203 and the sleeve 205 to rotate, and at the same time starts the pump body 804, and the pump body 804 transports the cleaning liquid in the water storage layer 8011 to the nozzle 204 through the hose and the first water pipe 806, and then the nozzle 204 sprays the cleaning liquid, and at the same time cooperates with the rotation of the cleaning block 701, and then the inner wall of the sampling container 103 can be cleaned, and the cleaned liquid will be retained between the first water baffle 201 and the second water baffle 202, and move with the first water baffle 201 and the second water baffle 202, and at the same time the hot air pipe transports the hot air through the first screw 304, the stretching tube 841, the diverter valve and the telescopic hose 842 to the sleeve 205, and sprays it through the air jet hole 2051, and then the sprayed hot air can dry the water stains remaining on the inner wall of the sampling container 103;

[0038] As the piston plate moves, the protrusion 817 will be stuck in the slot 816, thereby forming a gap between the first water baffle 201 and the movable plate 812, and then the first water baffle 201 will drive the movable plate 812 to rotate, and then the movable plate 812 drives the telescopic tube 813 to rotate, and at the same time the first water baffle 201 will squeeze the movable plate 812, so that the movable plate 812 moves toward the sampling port 1021, thereby making the gap between the first water baffle 201 and the second water baffle 202 connected to the third pipe 824, and then the liquid between the first water baffle 201 and the second water baffle 202 overflows into the third pipe 824 and flows into The cleaning liquid flows into the cleaning pipe 821, and then flows into the first pipe 822 and the second pipe 823 through the cleaning pipe 821. At this time, the cleaning liquid flowing out of the second pipe 823 can clean the side of the first baffle 201 close to the movable plate 812, and at the same time, the baffle 401 is loosened, and the cleaning liquid flowing out of the first pipe 822 flows into the telescopic pipe 813, and also flows out from the gap formed between the first baffle 201 and the movable plate 812. At the same time, since the first baffle 201 and the telescopic pipe 813 can be rotated, the first baffle 201 and the telescopic pipe 813 can be fully cleaned, and the cleaned liquid flows out from the fourth pipe 825. Figure 11 As shown, after the cleaning is completed, the piston plate continues to move, thereby connecting the right area of ​​the sampling container 103 with the third pipe 824. Since there is a large amount of gas in the right area, the internal pressure is relatively high. Therefore, when the sampling container 103 is connected with the third pipe 824, the hot air will enter the cleaning pipe 821 from the third pipe 824, flow to the first pipe 822 and the second pipe 823, and finally be discharged from the fourth pipe 825 and the fifth pipe 826. While the hot air flows, the water stains remaining in the first water barrier 201 and the telescopic tube 813 will be dried. Figure 12As shown, it should be noted that the third pipe 824 can be set to be short enough. After the liquid between the first baffle 201 and the second baffle 202 overflows into the third pipe 824, a small amount of liquid will remain in the third pipe 824, and the hot air will take away the liquid in the third pipe 824 when it flows, so that the effect of drying the residual water stains in the first baffle 201 and the telescopic tube 813 is not ideal. Therefore, after the pressure in the right area of ​​the sampling container 103 is balanced, the diverter valve is started to allow the hot air to flow into the cleaning pipe 821 through the first screw 304, the stretching tube 841 and the diverter valve, and then the dry hot air will simultaneously dry the third pipe 824, the first baffle 201 and the telescopic tube 813. Dry, thereby keeping the third pipe 824, the first water baffle 201 and the telescopic tube 813 dry. At the same time, a small amount of gas will still remain in the right area of ​​the sampling container 103, but it will not affect the subsequent operation of the piston plate. Since this device is operated during the movement of the piston plate, that is to say, this device can perform cleaning work at the same time as the sampling liquid is pushed out by the piston plate, which can shorten the time of the next sampling and improve the efficiency of sampling. It should be added that when a gap is formed between the first water baffle 201 and the movable plate 812, some sampling liquid will inevitably remain in the gap between the first water baffle 201 and the movable plate 812. This part can be discharged from the fourth pipe 825 as waste liquid.

[0039] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A chemical testing automatic sampler, characterized by: The invention comprises a mounting plate (101), wherein the mounting plate (101) is connected to a sampling box (102) via a lifting assembly, a sampling port (1021) is provided on the upper circumference of the sampling box (102), a blocking assembly for blocking the sampling port (1021) is provided on the outer wall of the sampling box (102), a sampling container (103) is fixedly connected to the sampling port (1021) in the sampling box (102), an end of the sampling container (103) away from the sampling port (1021) is sealed and slidably connected to a piston plate, a side of the piston plate away from the sampling port (1021) is fixedly connected to a piston rod (105), the piston rod (105) is driven by a first driving assembly to achieve sliding, a first elastic member (104) is provided between the piston plate and the sampling container (103), and a liquid inlet partition is provided at one end of the sampling container (103) near the sampling port (1021); The piston plate includes a first water baffle (201) that is sealed, slidably, and rotatably connected to the sampling container (103) and a second water baffle (202) that is sealed, slidably, and rotatably connected to the sampling container (103). A collar (203) is connected between the first water baffle (201) and the second water baffle (202). One end of the collar (203) is fixedly connected to the first water baffle (201), and the other end is in sealed contact with the second water baffle (202). The other end of the collar (203) is fixedly connected to the piston rod (105). The first water baffle (201), the collar (203), and the second water baffle (202) are connected to the first water baffle (201). The water baffles (202) form an "I" shape between the three, a nozzle (204) is circumferentially installed on the side wall of the collar (203), a sleeve (205) is rotatably connected to the side wall of the second water baffle (202) away from the sampling port (1021), and a gas injection hole (2051) is circumferentially provided on the side wall of the sleeve (205), the nozzle (204) conveys cleaning liquid through the liquid conveying component, and the sleeve (205) conveys hot gas through the gas conveying component, the piston rod (105) is fixedly connected to the sleeve (205), and the piston rod (105) is driven by the second driving component to achieve rotation.

2. The automatic sampler for chemical testing according to claim 1, characterized in that: The lifting assembly includes a first gear (301) and a second gear (302) rotatably connected to the top surface of the mounting plate (101), the first gear (301) and the second gear (302) are meshed with each other, a handle (303) is fixed to the top surface of the first gear (301), a first screw rod (304) is threadedly connected to the mounting plate (101), the first screw rod (304) is connected to the second gear (302) by means of a key and a keyway, and a first protective cover (305) for protecting the first screw rod (304) is installed between the mounting plate (101) and the sampling box (102).

3. The automatic sampler for chemical testing according to claim 2, characterized in that: The blocking assembly comprises a shielding plate (401) slidably connected to the outer wall of the sampling box (102) for blocking the sampling port (1021); a second elastic member (402) is provided between the shielding plate (401) and the sampling box (102); a second protective cover (403) is provided on the second elastic member (402); and a floating ball (404) is fixed to the top of the shielding plate (401).

4. The automatic sampler for chemical testing according to claim 3, characterized in that: The first driving assembly includes a second screw (501) rotatably connected to the center of the sampling box (102), a frustum block (502) is threadedly connected to the second screw (501), the frustum block (502) is in contact with the piston rod (105), a third gear (503) is fixed to the bottom end of the second screw (501), a sixth gear (504) meshing with the third gear (503) is rotatably connected in the sampling box (102), and the sixth gear (504) is driven by the first driving motor (505) to achieve rotation.

5. The automatic sampler for chemical testing according to claim 4, characterized in that: The second driving assembly includes a first bevel gear (601) rotatably connected to the side wall of the sampling container (103), the first bevel gear (601) is connected to the piston rod (105) through the relationship between a key and a keyway, a fourth gear (602) is rotatably connected inside the sampling box (102), a second bevel gear (603) meshing with the first bevel gear (601) is fixedly connected to the central axis of the fourth gear (602), a ring gear (604) meshing with all the fourth gears (602) is rotatably connected inside the sampling box (102), a fifth gear (605) meshing with the ring gear (604) is rotatably connected inside the sampling box (102), and the fifth gear (605) is driven by the second driving motor (606) to achieve rotation.

6. The automatic sampler for chemical testing according to claim 5, characterized in that: A cleaning block (701) is circumferentially mounted on the side wall of the collar (203), and a through hole (7011) is provided on the cleaning block (701).

7. The automatic sampler for chemical testing according to claim 6, characterized in that: A first partition (801) and a second partition (802) are fixedly connected in the sampling box (102), thereby dividing the sampling box (102) into three layers. The sampling container (103) is arranged in the middle layer, the upper layer is a water storage layer (8011), and the water storage layer (8011) is filled with cleaning liquid. The lower layer is a waste liquid layer (8021). The liquid delivery component includes a first fixed plate (803) fixedly connected to the second water partition (202), a first water pipe (806) fixedly connected to the first fixed plate (803), and the first water pipe (806) is connected to the inside of the ring (203). A pump body (804) is circumferentially arranged on the bottom surface of the first partition (801), one end of the pump body (804) is connected to the water storage layer (8011) through a water pipe, and the other end is connected to the first water pipe (806) through a hose.

8. The automatic sampler for chemical testing according to claim 7, characterized in that: The liquid inlet partition includes a third fixed plate (811) fixedly connected to one end of the sampling container (103) near the sampling port (1021), a movable plate (812) is provided between the third fixed plate (811) and the first water barrier (201), the movable plate (812) is slidably and rotatably connected to the inside of the sampling container (103), and the movable plate (812) and the third fixed plate (811) are connected through a telescopic tube (813), one end of the telescopic tube (813) is rotatably connected to the third fixed plate (811). On the third fixed plate (811), the other end is fixedly connected to the movable plate (812), the two ends of the telescopic tube (813) are connected by a telescopic rod (814), the telescopic rod (814) has a third elastic member (815) built in, a groove (816) is provided on one side of the movable plate (812) close to the first water barrier (201), and a protrusion (817) that matches the groove (816) is provided on one side of the first water barrier (201) close to the movable plate (812).

9. The automatic sampler for chemical testing according to claim 8, characterized in that: A cleaning pipe (821) is also fixed to the top of the outer wall of the container (103). The cleaning pipe (821) is connected to the sampling container (103) through a first pipe (822), a second pipe (823) and a third pipe (824). The first pipe (822) passes through the third fixing plate (811) and reaches the center of the third fixing plate (811) and is then connected to the telescopic pipe (813). The second pipe (823) and the third pipe (824) are both located near the sampling port (1021), and the second pipe (823) is closer to the sampling port (1021). Initially, the movable plate (812) blocks the third pipe (824) under the action of the telescopic rod (814). The fourth pipe (825) and the fifth pipe (826) are provided at the lower part of the sampling container (103). The fourth pipe (825) and the fifth pipe (826) connect the sampling container (103) and the waste liquid layer (8021).

10. The automatic sampler for chemical testing according to claim 9, characterized in that: The gas delivery assembly includes a first one-way valve (831) and a second one-way valve (832) arranged on the cleaning pipe (821), and a third one-way valve is also arranged on the third pipe (824). The first screw (304) is hollow, and an air hole (3041) is arranged at the bottom end of the first screw (304). A fourth fixed plate (818) is fixedly connected to the second water-blocking plate (202), and the fourth fixed plate (818) is rotatably connected to the sleeve (205). The air hole (3041) is connected to the cleaning pipe (821) through a stretching tube (841), and a diverter valve is arranged at the connection between the stretching tube (841) and the cleaning pipe (821). The other end of the diverter valve is connected to the sleeve (205) through a telescopic hose (842), and the telescopic hose (842) is fixedly connected to the fourth fixed plate (818).

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