Automatic sampling device for hazardous chemicals

Abstract

The present application relates to the field of sampling technology, and provides a hazardous chemical automatic sampling device, which comprises a sampling main body, a sampling assembly and a driving assembly. The sampling main body has a containing cavity and a first opening communicating with the containing cavity; the sampling assembly is arranged in the containing cavity, one end of the sampling assembly extends out of the first opening, and the sampling assembly comprises a sampling tube and a plug tube. The sampling tube is internally provided with a sample containing cavity extending along the axis direction of the sampling main body and a sampling port communicating with the containing cavity. The plug tube is movably arranged in the sample containing cavity and used for opening or plugging the sampling port. The driving assembly is installed on the outside of the sampling main body and used for driving the sampling tube to move along the axis direction of the sampling main body to sample the hazardous chemicals. The hazardous chemical automatic sampling device can effectively reduce the human intervention factor and improve the sampling accuracy. Meanwhile, the whole process is automatically mechanically sampled, so that the sampling efficiency and safety are improved.

Description

Technical Field

[0001] This invention relates to the field of sampling technology, and in particular to an automatic sampling device for hazardous chemicals. Background Technology

[0002] Hazardous chemicals, also known as hazardous materials, refer to chemical substances that possess characteristics such as flammability, explosiveness, toxicity, toxicity, and radioactivity. These substances are susceptible to causing personal injury and property damage during transportation, loading, unloading, and storage, thus requiring special protection. Hazardous chemicals often require safety testing equipment, which in turn necessitates the use of sampling devices to collect and transport samples into the testing equipment.

[0003] In this field, most sampling devices rely on manual sampling of hazardous chemicals. However, this method requires the operator to hold the device throughout the entire process, controlling its placement into the sample at a constant speed and then quickly lifting it. Consequently, different operators employ different sampling techniques, leading to randomness and bias in the samples, resulting in poor sampling accuracy and insufficient representativeness, thus causing deviations in the test results. Furthermore, the unavoidable proximity of the operator to the hazardous chemicals during sampling poses a significant safety hazard. Summary of the Invention

[0004] This invention provides an automatic sampling device for hazardous chemicals, which solves the technical problem of poor sampling accuracy in existing sampling devices.

[0005] This invention provides an automatic sampling device for hazardous chemicals, comprising:

[0006] A sampling body having a receiving cavity and a first opening communicating with the receiving cavity;

[0007] A sampling assembly, wherein the sampling assembly passes through the receiving cavity, one end of the sampling assembly extends from the first opening, the sampling assembly includes a sampling tube and a plug tube, the sampling tube having a sample receiving cavity extending along the axis of the sampling body and a sampling port communicating with the receiving cavity, and the plug tube being movably disposed within the sample receiving cavity for opening or sealing the sampling port; and

[0008] A driving assembly, installed on the outside of the sampling body, is used to drive the sampling tube to move along the axial direction of the sampling body in order to sample hazardous chemicals.

[0009] According to the automatic sampling device for hazardous chemicals provided by the application, the sampling assembly further comprises a plug sleeve, a plug, a limiting sleeve and a driving member, the plug sleeve is connected to the sampling pipe, the sampling port is arranged on the plug sleeve, the plug is installed on one end of the plug pipe close to the sampling port, the limiting sleeve is arranged on one end of the plug pipe close to the plug, and the driving member is connected to the other end of the plug pipe opposite to the plug, for driving the plug pipe to move back and forth along the axial direction, so as to drive the plug to open or block the sampling port.

[0010] According to the automatic sampling device for hazardous chemicals provided by the application, the outer peripheral wall of the sampling pipe is provided with two opposite racks along the axial direction, the driving assembly comprises a first gear set and a second gear set, the first gear set and the second gear set are respectively arranged opposite to the two racks and fixed on the sampling main body, and the first gear set and the second gear set are respectively in meshing transmission with the racks.

[0011] According to the automatic sampling device for hazardous chemicals provided by the application, the first gear set comprises a first mounting frame, a driving wheel shaft, a driving gear, a power gear, a first rolling gear and a driving compression wheel, the first mounting frame is connected to the outer side of the sampling main body through a fixing member, the driving wheel shaft is rotatably installed on the first mounting frame, the power gear, the driving gear and the first rolling gear are sequentially and spacedly arranged on the driving wheel shaft, the power gear is used for meshing with an external power mechanism to provide power, the driving gear is used for driving the second gear set, the first rolling gear is used for meshing with the rack to drive the sampling pipe, and the driving compression wheel is arranged at both ends of the first rolling gear, for limiting the first rolling gear.

[0012] According to the automatic sampling device for hazardous chemicals provided by the application, the second gear set comprises a second mounting frame, a driven wheel shaft, a driven gear, a second rolling gear and a driven compression wheel, the second mounting frame is connected to the outer side of the sampling main body through a fixing member, the driven wheel shaft is rotatably installed on the second mounting frame, the driven gear and the second rolling gear are sequentially and spacedly arranged on the driven wheel shaft, the driven gear is in meshing transmission with the driving gear, the second rolling gear is used for meshing with the rack to drive the sampling pipe, and the driven compression wheel is arranged at both ends of the second rolling gear, for limiting the second rolling gear.

[0013] According to the automatic sampling device for hazardous chemicals provided by the application, the automatic sampling device for hazardous chemicals further comprises an annular air knife, the annular air knife is arranged at one end of the sampling main body and close to the sampling port and towards the sampling pipe.

[0014] The automatic sampling device for hazardous chemicals provided by the present application further comprises a droplet receiving tray mechanism connected to the sampling main body and capable of rotating around the sampling port, which is used to collect residual hazardous chemicals swept by the annular air knife.

[0015] The automatic sampling device for hazardous chemicals provided by the present application, wherein the droplet receiving tray mechanism comprises a driving cylinder, a rocker arm and a droplet receiving tray, one side of the droplet receiving tray is provided with an opening, one end of the rocker arm is rotationally connected with the droplet receiving tray, and the other end is rotationally connected with the sampling main body, and the output end of the driving cylinder is connected with the rocker arm to drive the rocker arm to rotate and thus drive the droplet receiving tray to move in the direction close to or away from the sampling port.

[0016] The automatic sampling device for hazardous chemicals provided by the present application further comprises a first shaft sleeve and a second shaft sleeve, the sampling main body is provided with a second opening at the end opposite to the first opening in the axial direction, the first shaft sleeve and the second shaft sleeve are respectively arranged at the first opening and the second opening and are sleeved between the sampling tube and the sampling main body to seal the accommodating cavity.

[0017] The automatic sampling device for hazardous chemicals provided by the present application further comprises a sealing ring arranged between the second shaft sleeve and the sampling tube and tightly sleeved with the sampling tube.

[0018] The automatic sampling device for hazardous chemicals provided by the present application further comprises a steam pipeline arranged around the outer periphery of the sampling main body and used to heat the sampling main body.

[0019] The automatic sampling device for hazardous chemicals comprises a sampling main body, a sampling assembly and a driving assembly. The sampling main body has an accommodating cavity and a first opening in communication with the accommodating cavity. The sampling assembly is arranged in the accommodating cavity, one end of the sampling assembly extends out of the first opening, and the sampling assembly comprises a sampling tube and a plug tube. The sampling tube is provided with a sample accommodating cavity extending along the axial direction of the sampling main body and a sampling port in communication with the accommodating cavity. The plug tube is movably arranged in the sample accommodating cavity and used to open or block the sampling port. The driving assembly is installed on the outer side of the sampling main body and used to drive the sampling tube to move along the axial direction of the sampling main body to sample hazardous chemicals.

[0020] The application sets the sampling assembly in the containing cavity of the sampling main body, the sampling assembly can move in the containing cavity along the axial direction of the sampling main body under the driving of the driving assembly, so that the sampling assembly can freely extend into the hazardous chemical to be sampled, the sampling assembly comprises a sampling tube and a plug tube, the sampling tube is provided with a sample containing cavity and a sampling port, and the plug tube is arranged in the sample containing cavity to control the opening or plugging of the sampling port, so that the sampling process can be accurately controlled, thereby improving the sampling accuracy; meanwhile, the automatic sampling device for hazardous chemicals is used instead of manual sampling, the safety is high, the subjective factors of human intervention can be effectively avoided, the sampled sample is representative, and the accuracy of the detection result can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0022] Figure 1 It is a structure schematic view of an embodiment of the automatic sampling device for hazardous chemicals provided by the present application.

[0023] Figure 2 It is Figure 1 the left view of the automatic sampling device for hazardous chemicals in

[0024] Figure 3 It is Figure 2 the cross-sectional view of A-A in

[0025] Figure 4 It is Figure 3 the enlarged view of A in

[0026] Figure 5 It is Figure 3 the enlarged view of B in

[0027] Figure 6 It is Figure 1 the structure schematic view of the driving assembly in

[0028] Figure 7 It is Figure 6 the front view of the driving assembly in

[0029] Figure 8 It is Figure 7 the cross-sectional view of B-B in

[0030] Figure 9 It is Figure 7 the cross-sectional view of C-C in

[0031] Reference signs:

[0032] 10. The automatic sampling device for hazardous chemicals;

[0033] 11. The sampling body; 111, the accommodating cavity; 111a, the first opening; 111b, the second opening;

[0034] 12. The sampling assembly; 121, the sampling tube; 121a, the sample accommodating cavity; 121b, the rack; 122, the plug tube; 123, the plug sleeve; 123a, the sampling port; 124, the plug; 125, the driving member; 126, the positioning sleeve;

[0035] 13. The driving assembly; 131, the first gear set; 131a, the first mounting frame; 131b, the driving axle; 131c, the driving gear; 131d, the power gear; 131e, the first rolling gear; 131f, the driving compression wheel; 131h, the first bearing; 131g, the first blocking ring; 132, the second gear set; 132a, the second mounting frame; 132b, the driven axle; 132c, the driven gear; 132d, the second rolling gear; 132e, the driven compression wheel; 132f, the tension sleeve; 132h, the second bearing; 132g, the second blocking ring;

[0036] 14. The annular air knife; 15, the drip pan mechanism; 151, the driving cylinder; 152, the rocker arm; 153, the drip pan; 153a, the opening;

[0037] 16. The first shaft sleeve; 17, the second shaft sleeve; 18, the sealing ring; 19, the steam pipeline. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0039] In the description of the embodiments of the present application, it should be noted that, unless specifically defined and limited otherwise, the terms "first", "second" are numbered for the purpose of clearly describing the components of the product, and do not represent any substantial difference. The directions of "up" and "down" are based on the directions shown in the drawings. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. In addition, the meaning of "multiple" is two or more. In the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0040] In the description of the present application, it should be noted that, unless specifically defined and limited otherwise, the terms "installation", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0041] The present application provides an automatic sampling device for hazardous chemicals.

[0042] In the embodiments of the present application, as shown in Figures 1-5 The automatic sampling device for hazardous chemicals comprises a sampling main body 11, a sampling assembly 12 and a driving assembly 13. The sampling main body 11 has a containing cavity 111 and a first opening 111a communicating with the containing cavity 111; the sampling assembly 12 is arranged in the containing cavity 111, one end of the sampling assembly 12 extends out of the first opening 111a, the sampling assembly 12 comprises a sampling pipe 121 and a plug pipe 122, the sampling pipe 121 is provided with a sample containing cavity 121a extending along the axis direction of the sampling main body 11 and a sampling port 123a communicating with the containing cavity, and the plug pipe 122 is movably arranged in the sample containing cavity 121a and used for opening or plugging the sampling port 123a; the driving assembly 13 is installed on the outside of the sampling main body 11 and used for driving the sampling pipe 121 to move along the axis direction of the sampling main body 11 to sample the hazardous chemicals.

[0043] Specifically, in the embodiments of the present application, the automatic sampling device 10 for hazardous chemicals can be used for sampling tank cars or tank bodies. Referring to Figure 1The dangerous chemical automatic sampling device 10 comprises a sampling main body 11, which is in a substantially cylindrical structure, which can be a cylinder or a prism, etc. The sampling main body 11 is provided with a containing cavity 111 along the axial direction thereof, and the axial two ends of the sampling main body 11 can be provided with a first opening 111a and a second opening 111b, both of which are in communication with the sampling main body 11, so that the sampling main body 11 is penetrated. Of course, in some embodiments, only one of the axial two ends of the sampling main body 11 can be provided with the first opening 111a, which is not particularly limited. The sampling main body 11 is provided to be axially penetrated, so as to facilitate the arrangement of the sampling assembly 12.

[0044] In the embodiment of the present application, the dangerous chemical automatic sampling device 10 comprises a sampling assembly 12 and a driving assembly 13, and the driving device is used to drive the sampling assembly 12 to move back and forth along the axial direction of the containing cavity 111, so that the sampling assembly 12 can conveniently extend into the dangerous chemical to sample different heights or regions of the dangerous chemical.

[0045] The sampling assembly 12 comprises a sampling pipe 121 and a plug pipe 122, and the sampling pipe 121 is provided with a sample containing cavity 121a extending along the axial direction of the sampling pipe 121. The plug pipe 122 is arranged in the sample containing cavity 121a, one end of the plug pipe 122 abuts against a sampling port 123a, and the plug pipe 122 can move along the axial direction of the sampling pipe 121, so as to control the opening or plugging of the sampling port 123a by controlling the plug pipe 122. The present application can control the sampling assembly 12 to be uniformly placed into the dangerous chemical by the driving assembly 13, then control the sampling port 123a to be opened by controlling the plug pipe 122, take the required sample, and then quickly lift the sampling assembly 12 by the driving assembly 13. In this way, the automation mechanical sampling can reduce the contingency and deviation existing in manual sampling, and improve the sampling precision of the dangerous chemical automatic sampling device 10.

[0046] The application discloses a dangerous chemical automatic sampling device 10 which comprises a sampling main body 11, a sampling assembly 12 and a driving assembly 13. The sampling main body 11 has a containing cavity 111 and a first opening 111a in communication with the containing cavity 111; the sampling assembly 12 is arranged in the containing cavity 111 and extends out of the first opening 111a, and the sampling assembly 12 comprises a sampling tube 121 and a plug tube 122; the sampling tube 121 is internally provided with a sample containing cavity 121a extending along the axial direction of the sampling main body 11 and a sampling port 123a in communication with the containing cavity; and the plug tube 122 is movably arranged in the sample containing cavity 121a and used for opening or plugging the sampling port 123a; and the driving assembly 13 is installed on the outer side of the sampling main body 11 and used for driving the sampling tube 121 to move along the axial direction of the sampling main body 11 so as to sample the dangerous chemicals. According to the application, the sampling assembly 12 is arranged in the containing cavity 111 of the sampling main body 11, and the sampling assembly 12 can move in the containing cavity 111 along the axial direction of the sampling main body 11 under the driving of the driving assembly 13, so that the sampling assembly 12 can freely extend into the dangerous chemicals to be sampled; the sampling assembly 12 comprises the sampling tube 121 and the plug tube 122, the sampling tube 121 is provided with the sample containing cavity 121a and the sampling port 123a, and the plug tube 122 is arranged in the sample containing cavity 121a to control the opening or plugging of the sampling port 123a, so that the precision of the sampling process is precisely controlled, and the sampling precision is improved; meanwhile, the dangerous chemical automatic sampling device 10 is used to replace manual sampling, has high safety, can effectively avoid subjective factors caused by human intervention, and can obtain representative samples, so as to ensure the accuracy of the detection results.

[0047] Reference Figure 3 and Figure 5According to some embodiments of the present application, the sampling assembly 12 further comprises a plug sleeve 123, a plug 124, a limiting sleeve 126 and a driving member 125. The plug sleeve 123 is connected to the sampling tube 121, and a sampling port 123a is arranged on the plug sleeve 123. The plug 124 is installed on the plug tube 122 at an end close to the sampling port 123a. The limiting sleeve 126 is sleeved on the plug tube 122 at an end close to the plug 124. The driving member 125 is connected to the other end of the plug tube 122 opposite to the plug 124, and is used to drive the plug tube 122 to move back and forth along the axial direction, so as to drive the plug 124 to open or block the sampling port 123a. It can be understood that the plug 124 and the plug tube 122 can be integrally formed or separately arranged. The present application describes the case where the plug 124 and the plug tube 122 are separately arranged, and other embodiments can be implemented with reference to the present embodiment. The plug sleeve 123 is sleeved on an end of the sampling tube 121 close to the first opening 111a, and the sampling port 123a is arranged on the plug sleeve 123. The plug 124 abuts against the inner peripheral wall of the plug sleeve 123, so as to block the sampling port 123a. The limiting sleeve 126 is sleeved on the end of the plug tube 122 close to the plug 124. The outer ring of the limiting sleeve 126 can abut against the plug sleeve 123 or the sampling tube 121, so as to position the movement direction of the plug tube 122 when moving axially in the sample containing space 121a, and prevent the plug tube 124 from shaking when moving, so as to prevent the cooperation between the plug 124 and the sampling port 123a from deviating, and cause the hazardous chemical to leak. In this way, the limiting sleeve 126 can improve the safety and reliability of the sampling assembly 12 when sampling. The driving member 125 is installed on an end of the sampling assembly 12 away from the sampling port 123a. The output end of the driving member 125 is connected to the plug tube 122, so as to drive the plug tube 122 to move, and further drive the plug 124 connected to the plug tube 122 to open or close, so as to open or block the sampling port 123a. Specifically, the driving member 125 in the present application is a pneumatic cylinder, and other driving members 125 that can drive the plug tube 122 to move back and forth along the axial direction are also within the protection scope of the present application.

[0048] With reference to Figure 1 and Figure 2In some embodiments, the outer circumferential wall of the sampling tube 121 is provided with two opposite racks 121b along the axial direction thereof, the driving assembly 13 comprises a first gear set 131 and a second gear set 132, the first gear set 131 and the second gear set 132 are respectively arranged opposite to the two racks 121b and fixed to the sampling main body 11, and the first gear set 131 and the second gear set 132 are respectively in meshing transmission with the racks 121b. It can be understood that, in order to realize the smooth reciprocating movement of the sampling assembly 12 along the axial direction in the accommodating cavity 111, two racks 121b are arranged opposite to each other on the outer circumferential wall of the sampling tube 121, and the driving device comprises the first gear set 131 and the second gear set 132, the first gear set 131 and the second gear set 132 are respectively arranged corresponding to one rack 121b, and thus the meshing transmission between the mutually symmetrical gears and the racks 121b can make the sampling assembly 12 move smoothly along the axial direction in the accommodating cavity 111. Further, the formation of adverse factors to the sampling result can be reduced.

[0049] With reference to Figures 3 to 8 According to the automatic sampling device 10 for hazardous chemicals provided by the application, the first gear set 131 comprises a first mounting frame 131a, a driving shaft 131b, a driving gear 131c, a power gear 131d, a first rolling gear 131e and a driving pressure wheel 131f, the first mounting frame 131a is connected to the outer side of the sampling main body 11 through a fixing member, the driving shaft 131b is rotatably mounted on the first mounting frame 131a, the power gear 131d, the driving gear 131c and the first rolling gear 131e are sequentially and spacedly arranged on the driving shaft 131b, the power gear 131d is used for meshing with an external power mechanism to provide power, the driving gear 131c is used for acting on the second gear set 132, the first rolling gear 131e is used for meshing with the rack 121b to act on the sampling tube 121, and the driving pressure wheel 131f is arranged at both ends of the first rolling gear 131e and used for limiting the first rolling gear 131e. Specifically, the first mounting frame 131a is mounted on the outer circumferential side of the sampling main body 11 and connected through a fastening member, in order to improve the matching degree between the first mounting frame 131a and the sampling main body 11, a tensioning pressure rod can also be arranged on the first mounting frame 131a to improve the connection stability between the first mounting frame 131a and the sampling main body 11.

[0050] In some embodiments, the first gear set 131 can further comprise a pressing ring, a first bearing 131h and a first retainer 131g, both ends of the driving shaft 131b are connected with the first mounting frame 131a through the first bearing 131h, so as to increase the coaxiality and action performance of the driving shaft 131b. The first retainer 131g is used for limiting the driving shaft 131b and the bearing. The action reliability of the first gear set 131 is improved.

[0051] With reference to Figures 6 to 9 According to some embodiments of the present application, the second gear set 132 comprises a second mounting frame 132a, a driven wheel shaft 132b, a driven gear 132c, a second rolling gear 132d and a driven pressure wheel 132e, the second mounting frame 132a is connected to the outer side of the sampling main body 11 through a fixing member, the driven wheel shaft 132b is rotatably mounted on the second mounting frame 132a, the driven gear 132c and the second rolling gear 132d are sequentially and spacedly arranged on the driven wheel shaft 132b, the driven gear 132c is in meshing transmission with the driving gear 131c, the second rolling gear 132d is used for meshing action sampling pipe 121 with rack 121b, the driven pressure wheel 132e is arranged at both ends of the second rolling gear 132d, and is used for limiting the second rolling gear 132d. Specifically, the second mounting frame 132a is mounted on the outer circumferential side of the sampling main body 11, is arranged opposite to the first mounting frame 131a, is connected through a fastening member, and a tensioning pressure rod can also be arranged on the second mounting frame 132a in order to improve the cooperation degree between the second mounting frame 132a and the sampling main body 11, so as to improve the connection stability between the first mounting frame 131a and the sampling main body 11. The driven gear 132c is in meshing transmission with the driving gear 131c, thereby driving the entire second gear set 132 to rotate synchronously. The second rolling gear 132d is used for meshing action sampling pipe 121 reciprocating motion with rack 121b.

[0052] Further, in some embodiments, the second gear set 132 can further comprise a second bearing 132h and a second retainer 132g, the two ends of the driving wheel shaft 131b are connected with the second mounting frame 132a through the second bearing 132h, thereby increasing the coaxiality and action performance of the driving wheel shaft 131b. The second retainer 132g is used for limiting the driving wheel shaft 131b and the bearing. The action reliability of the second gear set 132 is improved.

[0053] With reference to Figure 7 and Figure 9 In some embodiments, the second gear set 132 further comprises a tensioning sleeve 132f, the tensioning sleeve 132f is sleeved on one end of the driven wheel shaft 132b and partially embedded between the driven gear 132c and the driven wheel shaft 132b, so as to offset the phenomenon that the driving gear 131c and the driven gear 132c are not in meshing transmission, and make the hazardous automatic sampling device 10 move more smoothly.

[0054] With reference to Figure 3 and Figure 5In some embodiments, the hazardous chemical automatic sampling device 10 further comprises a ring-shaped air knife 14 arranged at one end of the sampling main body 11 and close to the sampling port 123a towards the sampling tube 121. The ring-shaped air knife 14 is arranged to blow the outer wall of the sampling tube 121 to prevent the hazardous chemicals from polluting the sampling main body 11. The ring-shaped air knife 14 blows towards the sampling direction, so that the hazardous chemicals attached to the outer wall of the sampling tube 121 can be quickly cleaned.

[0055] With reference to Figure 1 and Figure 3 Further, the hazardous chemical automatic sampling device 10 further comprises a drip tray mechanism 15 connected to the sampling main body 11 and rotatable around the sampling port 123a. The drip tray mechanism 15 is arranged to collect the residual hazardous chemicals blown by the ring-shaped air knife 14. The drip tray mechanism 15 is arranged to collect the hazardous chemicals dropped after being blown by the ring-shaped air knife 14 to prevent environmental pollution. The drip tray mechanism 15 is arranged to be rotatable around the sampling port 123a, so as to avoid interference with the sampling assembly 12 during operation.

[0056] With reference to Figure 3 Specifically, the drip tray mechanism 15 comprises a driving cylinder 151, a rocker arm 152, and a drip tray 153. One side of the drip tray 153 is provided with an opening 153a. One end of the rocker arm 152 is rotatably connected to the drip tray 153, and the other end is rotatably connected to the sampling main body 11. The output end of the driving cylinder 151 is connected to the rocker arm 152 to drive the rocker arm 152 to rotate and drive the drip tray 153 to move towards and away from the sampling port 123a. The opening 153a of the drip tray 153 is arranged towards the ring-shaped air knife 14, so as to facilitate the reception of the hazardous chemicals blown by the ring-shaped air knife 14. The driving cylinder 151 is arranged to drive the drip tray 153 to rotate mechanically through the rocker arm 152, so as to improve the operation efficiency.

[0057] With reference to Figure 3 and Figure 5According to some embodiments of the present application, the hazardous chemical automatic sampling device 10 further comprises a first shaft sleeve 16 and a second shaft sleeve 17, the sampling main body 11 is provided with a second opening 111b at the end opposite to the first opening 111a along the axial direction, the first shaft sleeve 16 and the second shaft sleeve 17 are respectively arranged at the first opening 111a and the second opening 111b and are sleeved between the sampling tube 121 and the sampling main body 11 to seal the containing cavity 111. The first shaft sleeve 16 and the second shaft sleeve 17 are arranged at the first opening 111a and the second opening 111b at both ends of the containing cavity 111 along the axial direction to position the sampling main body 11 and the sampling tube 121, thereby improving the coaxiality between the sampling main body 11 and the sampling tube 121, enabling the sampling tube 121 to move smoothly relative to the sampling main body 11 and improving the action reliability of the hazardous chemical automatic sampling device 10.

[0058] With reference to Figure 3 and Figure 4 Further, the hazardous chemical automatic sampling device 10 further comprises a sealing ring 18 arranged between the second shaft sleeve 17 and the sampling tube 121 and tightly sleeved with the sampling tube 121. The sealing ring 18 is arranged to clean the hazardous chemicals on the outer wall of the sampling tube 121, thereby improving the self-cleaning capability of the hazardous chemical automatic sampling device 10.

[0059] With reference to Figure 2 In some embodiments, the hazardous chemical automatic sampling device 10 further comprises a steam pipe 19 arranged around the outer circumferential side of the sampling main body 11 to heat the sampling main body 11. It can be understood that when the hazardous chemical automatic sampling device 10 samples some hazardous chemicals with low freezing points, such as tar, etc. In order to prevent the hazardous chemicals from solidifying in the sampling tube 121 and causing difficulty in taking out the sample, the steam pipe 19 is arranged around the outer circumferential side of the sampling main body 11 in the present embodiment, and heated steam is introduced into the steam pipe 19, thereby heating the sampling main body 11 to prevent the hazardous chemicals from solidifying in the sampling tube 121. Specifically, the steam pipe 19 can be a steam copper pipe or a steam pipe 19 made of other high-thermal-conductivity materials to improve the heating capability of the sampling main body 11.

[0060] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be above or obliquely above the second feature, or it only means that the first feature is higher than the second feature in horizontal height. The first feature can be below or obliquely below the second feature, or it only means that the first feature is lower than the second feature in horizontal height.

[0061] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0062] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hazardous chemical automatic sampling device, characterized by, The sampling device comprises: a sampling body having a containing cavity and a first opening communicating with the containing cavity; a sampling assembly arranged in the containing cavity, one end of the sampling assembly extending out of the first opening, the sampling assembly comprising a sampling tube and a plug tube, the sampling tube being internally provided with a sample containing cavity extending along the axis of the sampling body and a sampling opening communicating with the containing cavity, the plug tube being movably arranged in the sample containing cavity for opening or plugging the sampling opening; a driving assembly mounted on the outer side of the sampling body for driving the sampling tube to move along the axis of the sampling body to sample hazardous chemicals; a ring-shaped air knife fixedly arranged on one end of the sampling body close to the first opening, the blowing direction of the ring-shaped air knife being arranged towards the sampling tube for blowing off the residual hazardous chemicals adhered to the outer wall of the sampling tube after sampling is completed; a drip receiving tray mechanism rotatably connected to the sampling body and located below the ring-shaped air knife for collecting the residual hazardous chemicals blown off by the ring-shaped air knife; a steam pipeline arranged around the outer periphery of the sampling body for passing in heated steam to heat and keep the sampling body and the sampling tube, preventing low freezing point hazardous chemicals from freezing in the sampling tube. The sampling assembly further comprises a plug sleeve, a plug, a limiting sleeve and a driving member, the plug sleeve being connected to the sampling tube, the sampling opening being arranged on the plug sleeve, the plug being mounted on one end of the plug tube close to the sampling opening, the limiting sleeve being sleeved on one end of the plug tube close to the plug, and the driving member being connected to the other end of the plug tube opposite to the plug for driving the plug tube to move back and forth along the axis to drive the plug to open or plug the sampling opening.

2. The automatic sampling device for hazardous chemicals according to claim 1, characterized by, The outer peripheral wall of the sampling tube is provided with two opposite racks along the axis, the driving assembly comprises a first gear set and a second gear set, the first gear set and the second gear set being oppositely arranged and fixed on the sampling body, and the first gear set and the second gear set being in meshing transmission with the racks, respectively.

3. The automatic sampling device for hazardous chemicals according to claim 1, characterized by, The first gear set comprises a first mounting frame, a driving axle, a driving gear, a power gear, a first rolling gear and a driving compression roller, the first mounting frame being connected to the outer side of the sampling body through a fixing member, the driving axle being rotatably mounted on the first mounting frame, the power gear, the driving gear and the first rolling gear being sequentially and spacedly arranged on the driving axle, the power gear being used for meshing with an external power mechanism to provide power, the driving gear being used for driving the second gear set, the first rolling gear being used for meshing with the racks to drive the sampling tube, and the driving compression roller being arranged on both ends of the first rolling gear for limiting the first rolling gear.

4. The automatic sampling device for hazardous chemicals according to claim 3, characterized by, ​ 5. The automatic sampling device for hazardous chemicals according to claim 4, characterized in that, The second gear set comprises a second mounting frame, a driven wheel shaft, a driven gear, a second rolling gear and a driven pressure roller, the second mounting frame is connected to the outside of the sampling main body through a fixing part, the driven wheel shaft is rotatably mounted on the second mounting frame, the driven gear and the second rolling gear are sequentially and spacedly arranged on the driven wheel shaft, the driven gear is engaged with the driving gear for transmission, the second rolling gear is used for engaging with the rack for moving the sampling tube, and the driven pressure roller is arranged at both ends of the second rolling gear for limiting the second rolling gear.

6. The automatic sampling device for hazardous chemicals according to claim 1, characterized by, The droplet receiving disc mechanism comprises a driving cylinder, a rocker arm and a droplet receiving disc, one side of the droplet receiving disc is provided with an opening, one end of the rocker arm is rotatably connected with the droplet receiving disc, and the other end of the rocker arm is rotatably connected with the sampling main body, and the output end of the driving cylinder is connected with the rocker arm to drive the rocker arm to rotate and drive the droplet receiving disc to move in the direction close to and away from the sampling port.

7. The automatic sampling device for hazardous chemicals according to claim 1, characterized by, The hazardous chemical automatic sampling device further comprises a first shaft sleeve and a second shaft sleeve, the sampling main body is provided with a second opening at one end opposite to the first opening in the axial direction, the first shaft sleeve and the second shaft sleeve are respectively arranged at the first opening and the second opening and are sleeved between the sampling tube and the sampling main body to seal the containing cavity.

8. The automatic sampling device for hazardous chemicals according to claim 7, characterized in that, The hazardous chemical automatic sampling device further comprises a sealing ring, the sealing ring is arranged between the second shaft sleeve and the sampling tube and is tightly and sleevedly arranged with the sampling tube.

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