Automatic sampling device for semi-dry sludge

Abstract

The utility model discloses an automatic sampling device for semi-dry sludge, which comprises a sampling device, the sampling device comprises a sampling barrel section and a sealing barrel section, one end of the sampling barrel section is connected with a discharge port of a drying machine, the other end of the sampling barrel section is detachably connected with the sealing barrel section, a sampling groove is arranged in the sampling barrel section, and a discharge port is arranged at the bottom of the sampling barrel section; the sample receiving device is arranged below the sampling barrel section and is fixedly connected with the discharge opening; the propelling device comprises a push rod, a propelling assembly and an electric propeller, the push rod and the sampling device are coaxially arranged, one end of the push rod is fixedly connected with the sampling groove, and the other end is connected with the electric propeller through the propelling assembly; the rotating device and the sampling device are coaxially arranged, and one end of the rotating device is detachably connected with the propelling assembly; the control system is in communication connection with the sample receiving device, the propelling device and the rotating device. The automatic sampling device has the beneficial effects that the sampling device, the sample receiving device, the propelling device, the rotating device and the control system are integrated, so that the working environment is improved, automatic sampling is realized, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge sampling, in particular to an automatic sampling device for semi-dry sludge. Background Art

[0002] With the acceleration of urbanization in my country, the volume of municipal sludge processed continues to increase. To maintain a reasonable moisture content in the dried sludge, sampling and testing are necessary. The semi-dry sludge sampling devices currently used in projects all require manual sampling. During sampling, the sampling trough must be manually held open and the sampling cylinder must be manually removed to extract the semi-dry sludge sample. This is a time-consuming and labor-intensive process. Furthermore, the sludge drying process is accompanied by the volatilization of organic matter and the generation of foul odors, resulting in harsh working conditions for operators. Utility Model Content

[0003] In order to solve the above problems, the purpose of the present invention is to provide an automatic sampling device for semi-dry sludge.

[0004] The utility model provides a semi-dry sludge automatic sampling device, comprising:

[0005] The sampling device includes a sampling barrel section and a sealing barrel section. One end of the sampling barrel section is connected to the discharge port of the dryer, and the other end is detachably connected to the sealing barrel section. The sampling barrel section is hollow inside and has a sampling groove and a discharge port at the bottom.

[0006] A sample receiving device is provided below the sampling tube section and is fixedly connected to the discharge port;

[0007] A propulsion device, comprising a push rod, a propulsion assembly, and an electric propeller, wherein the push rod is coaxially arranged with the sampling device, one end of the push rod passes through the sealing cylinder section and is fixedly connected to the sampling slot, and the other end is connected to the electric propeller through the propulsion assembly;

[0008] a rotating device, coaxially arranged with the sampling device, one end of which is detachably connected to the propulsion assembly;

[0009] The control system is in communication with the sample receiving device, the propulsion device and the rotation device, and controls the various devices to cooperate with each other to achieve automatic sampling.

[0010] As a further improvement of the present invention, the automatic sampling device further comprises a base, and the electric propeller, the rotating device and the control system are all fixed on the base.

[0011] As a further improvement of the present invention, the sampling trough is a U-shaped trough, and the discharge port is correspondingly arranged below the sampling trough.

[0012] As a further improvement of the present invention, the automatic sampling device further comprises a connecting collar and a locking gland.

[0013] The connecting collar is sleeved at the connection between the sampling tube section and the sealing tube section, is fixedly connected to the sampling tube section, and is detachably connected to the sealing tube section.

[0014] The locking gland is sleeved on the end of the sealing cylinder section away from the sampling cylinder section and is detachably connected to the sealing cylinder section.

[0015] As a further improvement of the present invention, a first sealing assembly is provided at one end of the sealing cylinder section close to the sampling cylinder section, and a second sealing assembly is provided at the other end.

[0016] As a further improvement of the present invention, the first sealing assembly includes a locking washer, a first O-ring and a first sealing bushing which are sleeved on the push rod.

[0017] The second sealing assembly includes a second O-ring and a second sealing bushing sleeve mounted on the push rod.

[0018] The locking washer, the first O-ring, the first sealing sleeve, the second sealing sleeve and the second O-ring are arranged in sequence along the axial direction.

[0019] As a further improvement of the present invention, the sample receiving device includes a sample receiving tube and a sample receiving barrel. The sample receiving tube is fixedly connected to the discharge port, and the sample receiving barrel is detachably connected to the sample receiving tube.

[0020] As a further improvement of the present invention, a first opening and closing device is provided on the sample receiving tube and is communicatively connected with the control system.

[0021] As a further improvement of the present invention, the propulsion assembly includes a sleeve connected to the push rod, a propulsion connecting plate and a cross socket, and a connecting component and an electromagnetic block connected to the electric propeller.

[0022] In which, the electromagnetic block is fixed on the connecting component and is communicated with the control system. The cross socket is fixed on the side of the sleeve close to the rotating device. The rotating device is detachably connected to the cross socket. One end of the propulsion link plate is vertically fixed on the sleeve, and the other end is connected to the connecting component through the adsorption effect of the electromagnetic block.

[0023] As a further improvement of the present invention, the automatic sampling device further includes a second opening and closing device, one end of which is fixedly connected to the discharge port of the drying machine, and the other end of which is fixedly connected to the sampling cylinder section.

[0024] The beneficial effects of the present invention are as follows: by integrating the sampling device, the sample receiving device, the propulsion device and the rotating device, a closed sampling environment is constructed, the overflow of organic volatile gases and odorous gases is reduced, and the working environment is improved. Moreover, a control system is provided to control the operation of the entire device, and automatic sampling is realized, which not only improves work efficiency, but also avoids direct contact between operators and high-temperature gases, thereby ensuring the health and safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0026] Figure 1 This is a structural schematic diagram of an automatic sampling device for semi-dry sludge according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of a sampling device in an automatic sampling device for semi-dry sludge according to an embodiment of the present utility model;

[0028] Figure 3 This is a structural schematic diagram of a propulsion component in an automatic sampling device for semi-dry sludge according to an embodiment of the present utility model.

[0029] In the picture:

[0030] 1. Dryer discharge port; 2. Sampling device; 3. Propulsion device; 4. Rotation device; 5. Base; 6. Sample tube; 7. Sample connection device; 8. Sample barrel; 9. Control system; 21. Sampling barrel section; 22. Connecting collar; 23. Sealing barrel section; 24. Locking gland; 25. Sampling slot; 26. Push rod; 27. Locking washer; 28. O-ring; 29. Sealing bushing; 30. Electric propeller; 31. Output shaft; 32. Fixed tube; 33. Connecting component; 34. Electromagnetic block; 35. Bolt; 210. Sleeve; 211. Propulsion connecting plate; 212. Cross socket. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, in the description of the present invention, the terms used are for illustrative purposes only and are not intended to limit the scope of the present invention. The terms "include" and / or "comprise" are used to specify the presence of the elements, steps, operations and / or components, but do not exclude the presence or addition of one or more other elements, steps, operations and / or components. The terms "first", "second" and the like may be used to describe various elements, do not represent an order, and do not limit these elements. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more. These terms are only used to distinguish one element from another. These and / or other aspects become apparent in conjunction with the following drawings, and it is easier for a person of ordinary skill in the art to understand the description of the embodiments of the present invention. The drawings are used to depict the embodiments of the present invention for illustrative purposes only. Those skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods shown in the present invention can be adopted without departing from the principles of the present invention.

[0034] Example 1, as Figure 1 As shown, the semi-dry sludge automatic sampling device described in the embodiment of the utility model includes:

[0035] The sampling device 2 includes a sampling barrel section 21 and a sealing barrel section 23. One end of the sampling barrel section 21 is connected to the dryer discharge port 1, and the other end is detachably connected to the sealing barrel section 23. The sampling barrel section 21 is hollow inside and has a sampling slot 25, and a discharge port at the bottom.

[0036] The sample receiving device 7 is provided below the sampling tube section 21 and is fixedly connected to the discharge port, and is used to receive the sample taken out from the sampling slot 25;

[0037] The propulsion device 3 includes a push rod 26, a propulsion assembly, and an electric propeller 30. The push rod 26 is coaxially arranged with the sampling device 2. One end of the push rod 26 passes through the sealing cylinder section 23 and is fixedly connected to the sampling slot 25. The other end is connected to the electric propeller 30 through the propulsion assembly, so that the propulsion assembly is driven by the electric propeller 30 to move axially and telescopically, thereby driving the push rod 26 to move axially and telescopically.

[0038] The rotating device 4 is coaxially arranged with the sampling device 2, and one end of the rotating device 4 is detachably connected to the propulsion assembly, so that the propulsion assembly rotates radially under the drive of the rotating device 4, driving the push rod 26 and the sampling slot 25 to rotate radially, so that the sampling slot 25 is initially opened upward to collect the sample, and after rotating 180 degrees, the sampling slot 25 is opened downward to pour out the sample;

[0039] The control system 9 is in communication with the sample receiving device 7, the propulsion device 3, and the rotating device 4, and is used to control the opening and closing of the first opening and closing device and the second opening and closing device, the advancement and return of the propulsion device 3, and the forward and reverse rotation of the rotating device 4 by 180 degrees, so that the various devices cooperate with each other to realize automatic sampling.

[0040] When the device of the present application is used, the control system 9 first sends a propulsion instruction to the propulsion device 3, so that the electric propeller 30 drives the propulsion assembly to move axially forward, and then drives the push rod 26 and the sampling trough 25 to move axially toward the dryer discharge port 1 until they move to the specified position; after the sampling trough 25 takes the sample, the control system 9 sends a return instruction to the propulsion device 3, so that the electric propeller 30 drives the propulsion assembly to move axially backward, and then drives the push rod 26 and the sampling trough 25 back to the initial position; after confirming safety, the control system 9 sends a flip instruction to the rotating device 4, so that the rotating device 4 drives the push rod 26 and the sampling trough 25 to rotate downward 180°, so that the semi-dried sludge sample in the sampling trough 25 falls into the sample receiving device 7 through the discharge port, and then the control system 9 controls the rotating device 4 to reverse and return to the initial state, thereby completing one sampling.

[0041] The device described in the embodiment of the present application constructs a closed sampling environment by integrating the sampling device 2, the sample receiving device 7, the propulsion device 3 and the rotating device 4, thereby reducing the overflow of odorous gases in the semi-dried sludge sample and improving the working environment. Moreover, a control system 9 is provided to control the operation of the entire device to realize automatic sampling, which not only reduces the error of manual sampling and improves work efficiency, but also avoids direct contact between operators and high-temperature gases, thereby ensuring the health and safety of personnel.

[0042] Preferably, the sampling barrel section 21 and the sealing barrel section 23 are cylindrical. It is understandable that the sampling barrel section 21 and the sealing barrel section 23 can also be triangular prisms, quadrangular prisms or other irregularly shaped prisms, as long as they are hollow inside and allow the sampling slot 25 and the push rod 26 to rotate. This application does not impose any specific restrictions on their external shape.

[0043] Preferably, the control system 9 adopts a PLC control system. The PLC control system has strong programmability and high stability, can achieve efficient control and data processing, reduce work intensity and improve work efficiency.

[0044] Furthermore, the automatic sampling device further comprises a base 5, and the electric propeller 30, the rotating device 4 and the control system 9 are all fixed on the base 5. Figure 1 As shown, the electric propeller 30, the rotating device 4 and the control system 9 are sequentially mounted on the base 5. The present application does not limit the specific positions of the electric propeller, the rotating device and the control system on the base.

[0045] Furthermore, the sampling trough 25 is a U-shaped trough with end plates welded to its ends, opening upward. The discharge port is correspondingly disposed below the sampling trough 25. Preferably, the discharge port is rectangular, and its size matches that of the sampling trough 25. It is understood that the discharge port may be slightly larger than the sampling trough, as long as the semi-dried sludge sample in the sampling trough can be discharged from the discharge port.

[0046] Furthermore, the automatic sampling device also includes a connecting collar 22 and a locking gland 24. The connecting collar 22 is mounted at the junction of the sampling barrel section 21 and the sealing barrel section 23, fixedly connected to the sampling barrel section 21 and detachably connected to the sealing barrel section 23. The locking gland 24 is mounted at the end of the sealing barrel section 23 away from the sampling barrel section 21 and detachably connected to the sealing barrel section 23. The shape of the connecting collar 22 needs to be determined according to the actual shapes of the sampling barrel section 21 and the sealing barrel section 23.

[0047] Preferably, the sampling tube section 21 and the sealing tube section 23 are made of stainless steel seamless steel pipes, one end of the connecting ring 22 is welded to the sampling tube section 21, and the other end is threadedly connected to the sealing tube section 23, and the locking cover 24 is threadedly connected to the sealing tube section 23 to facilitate disassembly, cleaning and maintenance of the sampling device 2.

[0048] In one embodiment, Figure 2 As shown, the sealing cylinder section 23 is provided with a first sealing component at one end close to the sampling cylinder section 21 and a second sealing component at the other end, so as to further strengthen the sealing of the sealing cylinder section 23 .

[0049] Furthermore, the first sealing assembly includes a locking washer 27, a first O-ring 28 and a first sealing sleeve 29 which are sleeved on the push rod 26, and the second sealing assembly includes a second O-ring 28 and a second sealing sleeve 29 which are sleeved on the push rod 26. The locking washer 27, the first O-ring 28, the first sealing sleeve 29, the second sealing sleeve 29 and the second O-ring 28 are arranged in sequence along the axial direction.

[0050] A gap is left between the second sealing bushing 29 and the first sealing bushing 29. The push rod 26 passes through the locking gland 24, the second O-ring 28, the second sealing bushing 29, the first sealing bushing 29, the first O-ring 28, and the locking washer 27 in sequence, and is fixedly connected to the sampling slot 25 in the sampling barrel section 21. Providing two sets of sealing assemblies at both ends of the sealing barrel section 23 forms a secondary seal, which not only improves sealing reliability but also reduces the amount of semi-dried sludge sample remaining on the push rod 26, further reducing the adverse effects of sludge on the workshop environment.

[0051] In one embodiment, the sample receiving device 7 includes a sample receiving tube 6 and a sample receiving bucket 8. The sample receiving tube 6 is fixedly connected to the discharge port, and the sample receiving bucket 8 is detachably connected to the sample receiving tube 6 to facilitate staff to take out samples.

[0052] Furthermore, the sample receiving pipe 6 is provided with a first opening and closing device, which is in communication with the control system 9. This device can not only freely control the timing of sample receiving, but also prevent the odorous gas in the sampling device 2 from escaping through the sample receiving pipe 6. Preferably, the first opening and closing device is an electric gate valve, which is connected to the sample receiving pipe 6 via a flange.

[0053] After the sampling trough 25 takes out the sample and returns to the initial position, the control system 9 first controls the opening of the first opening and closing device, and then controls the rotation device 4 to rotate, so that the semi-dried sludge sample in the sampling trough 25 falls into the sample receiving bucket 8 through the sample receiving tube 6. After the rotating device 4 controls the sampling trough 25 to reverse and return to the initial state, the control system 9 controls the closing of the first opening and closing device, and the staff takes away the sample in the sample receiving bucket 8.

[0054] In one embodiment, Figure 3 As shown, the propulsion assembly includes a sleeve 210 connected to the push rod, a propulsion link plate 211 and a cross socket 212, as well as a connecting component 33 and an electromagnetic block 34 connected to the electric propeller 30, wherein the electromagnetic block 34 is fixed to the connecting component 33 and is in communication with the control system 9, the cross socket 212 is fixed to the side of the sleeve 210 close to the rotating device 4, and the rotating device 4 is detachably connected to the cross socket 212. One end of the propulsion link plate 211 is vertically fixed to the sleeve 210, and the other end is connected to the connecting component 33 through the adsorption effect of the electromagnetic block 34. The electromagnetic block 34 is a suction cup type electromagnetic block, and the cross socket 212 is plugged or snapped into the rotating device 4 in the initial position. The setting direction of the propulsion link plate 211 is consistent with the opening direction of the sampling slot 25.

[0055] Preferably, the propulsion link plate 211 is made of a magnetic material, such as iron, nickel, chromium, iron oxide, chromium oxide, etc. The present application does not make any specific restrictions on the material used for the propulsion link plate.

[0056] Preferably, the connecting part 33 is semi-frame-shaped, wherein the rotation direction of the rotating device 4 should be consistent with the opening direction of the connecting part 33 to ensure that when the push rod 26 rotates, the push link plate 211 leaves the connecting part 33 and rotates synchronously with the push rod 26.

[0057] Preferably, the stroke of the electric propeller 30 should be greater than or equal to the distance that the sampling slot 25 needs to travel toward the dryer discharge port 1 when taking samples.

[0058] It can be understood that when the positions of the electric propeller 30 and the rotating device 4 on the base 5 change, the setting direction of the propulsion connecting plate 211, the opening direction of the connecting part 33 and the rotation direction of the rotating device 4 can be adaptively modified according to actual conditions, and this application does not make specific restrictions on this.

[0059] Preferably, Figure 3 As shown, the output shaft 31 of the electric propeller 30 is sleeved with a fixing tube 32. One end of the fixing tube 32 is welded to the connecting component 33, and the other end is fixed to the output shaft 31 via a bolt 35. The electromagnetic block 34 is fixedly mounted on the back of the semi-frame-shaped connecting component 33. It is understood that the electromagnetic blocks can also be mounted on both sides of the semi-frame-shaped connecting component, as long as they can perform the function of adsorbing and propelling the connecting plate. This application does not limit the specific installation position of the electromagnetic blocks or the fixing method between the various components.

[0060] When the propulsion device 3 is working, the control system 9 first turns on the electromagnetic block 34, so that the electromagnetic block 34 sucks the propulsion link plate 211, and then controls the propulsion device 3 to move forward axially. At this time, due to the adsorption effect of the electromagnetic block 34, the propulsion link plate 211 is synchronously moved forward, thereby driving the push rod 26 and the sampling slot 25 to move toward the dryer discharge port 1, and the cross socket 212 also follows the push rod 26 to separate from the rotating device 4 under the action of the thrust; similarly, when the propulsion device 3 returns, it also drives the propulsion link plate 211 to move, thereby driving the push rod 26 and the sampling slot 25 to retreat backward until they reach the initial position. At this time, the cross socket 212 and the rotating device 4 are also restored to connection under the action of the thrust.

[0061] When the rotating device 4 is working, the control system 9 controls the electromagnetic block 34 to be closed, and the electromagnetic block 34 stops adsorbing and pushing the connecting plate 211, and then controls the rotating device 4 to flip, driving the push rod 26 and the sampling slot 25 to flip downward 180°, so that the opening direction of the sampling slot 25 changes from upward to downward. After pouring out the sample, the rotating device 4 is controlled to reverse, driving the push rod 26 and the sampling slot 25 to flip in the opposite direction 180°, so that the opening direction of the sampling slot 25 changes from downward to upward. After confirming safety, the control system 9 controls the electromagnetic block 34 to be opened, so that the electromagnetic block 34 returns to the magnetic state to prevent the push rod 26 from rotating.

[0062] The automatic sampling device further includes a second opening and closing device, one end of which is fixedly connected to the dryer discharge port 1 , and the other end of which is fixedly connected to the sampling barrel section 21 .

[0063] Preferably, the second opening and closing device is an electric ball valve, which is fixedly connected to the dryer discharge port 1 and the sampling barrel section 21 by bolts. When sampling is performed using the sampling slot 25, the control system 9 first controls the opening of the second opening and closing device, and then controls the activation of the propulsion device 3. After the sampling slot 25 has taken the sample and returned to its initial position, the control system controls the closing of the second opening and closing device to prevent the semi-dried sludge in the dryer from overflowing from the dryer discharge port 1 and clogging the sampling barrel section 21 connected to the dryer.

[0064] The specific sampling process using the automatic sampling device of this application is as follows:

[0065] Initially, both the first and second opening and closing devices are closed. During sampling, under the control of the PLC control system, the following actions are performed sequentially: the electromagnetic block 34 tightens the push link plate 211, the second opening and closing device executes the open command, and after the valve is fully open and safety is confirmed, the propulsion device 3 executes the propulsion command, driving the push link plate 211, the push rod 26, and the sampling slot 25 toward the dryer discharge port 1. The cross socket 212 is disconnected from the rotating device 4. After moving to the designated position, the sampling slot 25 remains at the sampling position for the required sampling time to ensure that the sample is obtained. After the sampling slot 25 completes sampling, the propulsion device 3 executes the return command, driving the push link plate 211, the push rod 26, and the sampling slot 25 back to the initial position. At this time, the cross socket 212 is reconnected to the rotating device 4. After safety is confirmed, the second opening and closing device executes the close command. The first opening and closing device then executes the open command. Once the valve is fully open and safe, the electromagnetic block 34 ceases its attraction to the push link plate 211. The rotating device 4 executes the 180-degree flip command, causing the push rod 26 and the sampling slot 25 to flip 180°, reversing the direction of the sampling slot 25 from upward to downward. The semi-dried sludge sample in the sampling slot 25 flows through the sample receiving tube 6 and falls into the sample receiving bucket 8. After the sample is discharged, the rotating device 4 executes the restore initial state flip command, causing the push rod 26 and the sampling slot 25 to flip 180° in the opposite direction, returning the direction of the sampling slot 25 from downward to upward. After confirming the position, the electromagnetic block 34 returns to its magnetic state, and the first opening and closing device executes the close command, completing the sampling operation.

[0066] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0067] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features that are included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

[0068] It will be understood by those skilled in the art that although the present invention has been described with reference to exemplary embodiments, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present invention without departing from the essential scope of the present invention. Therefore, the present invention is not limited to the particular embodiments disclosed, but is intended to include all embodiments falling within the scope of the appended claims.

Claims

1. A semi-dry sludge automatic sampling device, characterized in that: include: The sampling device includes a sampling barrel section and a sealing barrel section. One end of the sampling barrel section is connected to the discharge port of the dryer, and the other end is detachably connected to the sealing barrel section. The sampling barrel section is hollow inside and has a sampling groove and a discharge port at the bottom. A sample receiving device is provided below the sampling tube section and is fixedly connected to the discharge port; A propulsion device, comprising a push rod, a propulsion assembly, and an electric propeller, wherein the push rod is coaxially arranged with the sampling device, one end of the push rod passes through the sealing cylinder section and is fixedly connected to the sampling slot, and the other end is connected to the electric propeller through the propulsion assembly; a rotating device, coaxially arranged with the sampling device, one end of which is detachably connected to the propulsion assembly; The control system is in communication with the sample receiving device, the propulsion device and the rotation device, and controls the various devices to cooperate with each other to achieve automatic sampling.

2. The automatic sampling device according to claim 1, wherein The automatic sampling device further comprises a base, and the electric propeller, the rotating device and the control system are all fixed on the base.

3. The automatic sampling device according to claim 1, wherein The sampling trough is a U-shaped trough, and the discharge port is correspondingly arranged below the sampling trough.

4. The automatic sampling device according to claim 1, wherein The automatic sampling device also includes a connecting collar and a locking gland. The connecting collar is sleeved at the connection between the sampling tube section and the sealing tube section, is fixedly connected to the sampling tube section, and is detachably connected to the sealing tube section. The locking gland is sleeved on the end of the sealing cylinder section away from the sampling cylinder section and is detachably connected to the sealing cylinder section.

5. The automatic sampling device according to claim 4, wherein The sealing cylinder section has one end close to the sampling cylinder section provided with a first sealing assembly, and the other end thereof has a second sealing assembly.

6. The automatic sampling device according to claim 5, wherein: The first sealing assembly includes a locking washer, a first O-ring and a first sealing bushing which are sleeved on the push rod. The second sealing assembly includes a second O-ring and a second sealing bushing sleeve mounted on the push rod. The locking washer, the first O-ring, the first sealing sleeve, the second sealing sleeve and the second O-ring are arranged in sequence along the axial direction.

7. The automatic sampling device according to claim 1, wherein The sample receiving device comprises a sample receiving tube and a sample receiving barrel. The sample receiving tube is fixedly connected to the discharge port, and the sample receiving barrel is detachably connected to the sample receiving tube.

8. The automatic sampling device according to claim 7, wherein: The sample receiving tube is provided with a first opening and closing device, which is in communication connection with the control system.

9. The automatic sampling device according to claim 1, wherein: The propulsion assembly includes a sleeve connected to the push rod, a propulsion connecting plate and a cross socket, and a connecting component and an electromagnetic block connected to the electric propeller. In which, the electromagnetic block is fixed on the connecting component and is communicated with the control system. The cross socket is fixed on the side of the sleeve close to the rotating device. The rotating device is detachably connected to the cross socket. One end of the propulsion link plate is vertically fixed on the sleeve, and the other end is connected to the connecting component through the adsorption effect of the electromagnetic block.

10. The automatic sampling device according to claim 1, wherein The automatic sampling device further comprises a second opening and closing device, one end of which is fixedly connected to the discharge port of the drying machine, and the other end of which is fixedly connected to the sampling cylinder section.

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