A trace explosive detector anti-pollution cleaning device

Abstract

The present application relates to the technical field of explosive detection, and discloses a trace explosive detector anti-pollution cleaning device, which comprises a cabinet body, a ring-shaped sealing element and a closed cleaning component. The cabinet body is provided with a placing cavity for placing the detector; a top cover of the cabinet body is provided with an operation opening, the operation opening is communicated with the placing cavity and the external environment, and the operation opening is used for exposing the operation panel of the detector; the cabinet body is provided with a detection opening, the detection opening is communicated with the placing cavity and the external environment, and the detection opening corresponds to the position of the detection port of the detector; the detection opening is used for penetrating and inserting the to-be-detected element into the detection port of the detector; the ring-shaped sealing element is arranged on the top cover and located in the placing cavity; the ring-shaped sealing element is used for abutting against the shell of the detector to close the placing cavity; and the closed cleaning component is detachably installed on the cabinet body, can close or open the detection opening, and can clean the detection port of the detector when closed. The device takes into account the protection and use of the detector.

Description

Technical Field

[0001] This invention relates to the field of explosives detection technology, and in particular to a pollution prevention and cleanliness device for a trace explosives detector. Background Technology

[0002] In recent years, trace explosives detectors have been increasingly used in key areas such as civil aviation security, customs border control, and rail transportation, leading to a rapid increase in the number of benchtop devices. Unlike handheld detectors, these instruments cannot be directly stored in sealed cases after use. In actual deployments, prolonged exposure to unclean environments and dust accumulation can easily cause sensor contamination, false alarms, and other malfunctions. Furthermore, cross-contamination from residues between multiple tests can affect the reliability of the test results.

[0003] Existing cabinets for storing trace explosive detectors can only be used when the instrument is not in use. When the instrument needs to be operated, the cabinet door must be opened or the instrument must be removed, making it impossible to use it while providing protection. Furthermore, although the instrument itself has some protective capabilities, its partial dust cover cannot replace the cabinet's overall protection. In other words, existing cabinets cannot simultaneously provide protection for the detector and ensure its usability. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a pollution prevention and cleaning device for trace explosive detectors, which takes into account both the protection of the detector and its use.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A contamination prevention and cleanliness device for a trace explosive detector includes:

[0007] The cabinet has a placement cavity for housing a detector; the top cover of the cabinet has an operation opening that connects the placement cavity to the external environment and exposes the detector's operation panel; the cabinet also has a detection opening that connects the placement cavity to the external environment and corresponds to the detector's detection port; the detection opening allows a component to be inspected to pass through and be inserted into the detector's detection port.

[0008] An annular seal is disposed on the top cover and located in the placement cavity; the annular seal extends circumferentially along the operating opening; the annular seal is used to abut against the detector housing to close the placement cavity;

[0009] A closed cleaning component is provided, which is detachably installed on the cabinet. The closed cleaning component can close or open the detection opening and can clean the detection port of the detector when closed.

[0010] Further, the closed cleaning component includes a mounting base, a release shaft, a retrieval shaft, a telescopic rod, and a contact cylinder; the mounting base has a first mounting cavity, the release shaft and the retrieval shaft are both mounted in the first mounting cavity, the release shaft and the retrieval shaft both extend along the height direction of the mounting base, and the release shaft and the retrieval shaft are spaced apart along the length direction of the mounting base; a cleaning roll is mounted on the release shaft, the cleaning roll extends from the release shaft to the retrieval shaft, and the cleaning roll covers the detection opening; the release shaft is used to release the cleaning roll, and the retrieval shaft is used to retrieve the released cleaning roll; the telescopic rod is mounted in the first mounting cavity, and the telescopic rod is located between the release shaft and the retrieval shaft; the contact cylinder is rotatably mounted on the telescopic end of the telescopic rod, the rotation axis of the contact cylinder is parallel to the rotation axis of the release shaft, and the contact cylinder is used to press the cleaning roll against the surface of the detector's detection port.

[0011] Furthermore, the first mounting cavity has a first guide groove and a second guide groove on its sidewall along the height direction of the mounting base. Both the first guide groove and the second guide groove extend along the length direction of the mounting base and are spaced apart along the width direction of the mounting base. The extended end of the second guide groove is inclined along the width direction of the mounting base to form an inclined section, and the inclined section is inclined close to the first guide groove. The telescopic rod is slidably mounted in the first guide groove. The telescopic end is provided with a sliding wheel, which is slidably mounted in the second guide groove. The telescopic rod slides along the first guide groove, driving the sliding wheel to slide along the second guide groove, thereby causing the telescopic end to extend and retract along the width direction of the mounting base.

[0012] Furthermore, the mounting base is equipped with a sliding drive mechanism, a rotating drive mechanism, and a control module. The sliding drive mechanism and the rotating drive mechanism are electrically connected to the control module. The sliding drive mechanism drives the telescopic rod to slide along the first guide groove. The rotating drive mechanism drives the retrieval shaft, and the retrieval shaft and the release shaft are connected by a belt drive.

[0013] Furthermore, the pollution prevention and cleanliness device for a trace explosive detector also includes a heat dissipation component. The heat dissipation component includes multiple heat pipes, which are spaced apart along the width of the cabinet. Each heat pipe has a heat absorption section and a heat dissipation section connected in sequence. The cabinet has a mezzanine and a heat dissipation cavity. The outer contour of the cross-section of the mezzanine is U-shaped. The heat dissipation cavity is located below the placement cavity, and the mezzanine and the heat dissipation cavity are separated by a partition. Both side plates of the placement cavity along the length of the cabinet are heat absorption plates. The heat absorption section is installed on the heat absorption plate and is located in the mezzanine. The heat dissipation section passes through the partition and is located in the heat dissipation cavity. The heat dissipation section has a heat dissipation plate. Both ends of the cabinet along its own length are provided with first filter heat dissipation ports, which connect the heat dissipation cavity to the external environment.

[0014] Furthermore, the detection opening is located at one end of the cabinet along its width, and the other end is provided with a second filter heat dissipation port, which connects the heat dissipation cavity to the external environment; the heat dissipation component also includes a heat dissipation fan, which is installed in the heat dissipation cavity and located at the second filter heat dissipation port, and is used to exhaust the hot air of the heat dissipation cavity from the second filter heat dissipation port to the external environment.

[0015] Furthermore, the interlayer is provided with a first heat insulation layer on the side wall along the length of the cabinet, and the first heat insulation layer is located between the heat absorption section and the side wall of the interlayer; the bottom plate of the placement cavity is provided with a second heat insulation layer on the end face facing the interlayer.

[0016] Furthermore, the detection opening is located at one end of the cabinet along its width direction, and the other end is provided with an air pressure balance port. The air pressure balance port connects the placement cavity with the external environment, and the air pressure balance port is provided with a filter.

[0017] Furthermore, the filter element is a hydrophobic and breathable membrane, HEPA filter cotton, activated carbon filter, or antistatic filter.

[0018] Furthermore, the bottom of the cabinet is provided with multiple vibration-damping feet, which are distributed circumferentially along the bottom of the cabinet.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The cabinet has a placement cavity for housing the detector. The top cover of the cabinet has an operation opening connecting the placement cavity to the external environment, exposing the detector's control panel. The cabinet also has a detection opening connecting the placement cavity to the external environment, corresponding to the detector's detection port. The detection opening allows the part to be tested to pass through and be inserted into the detector's detection port. An annular seal is located on the top cover within the placement cavity, extending circumferentially along the operation opening. This annular seal abuts against the detector's housing to seal the placement cavity. By providing an operation opening on the top cover, users can directly operate the detector's control panel without opening the cabinet door or removing the detector. Simultaneously, the annular seal extending circumferentially along the operation opening on the inside of the top cover abuts against the detector's housing when the top cover is closed, thus achieving a complete seal of the placement cavity while exposing the control panel. Users can directly insert the part to be tested into the detection port through the detection opening to complete the testing operation without opening the cabinet door. This structural design not only meets the needs of direct use inside the cabinet, but also effectively prevents external dust from entering the placement cavity and contaminating the detector.

[0021] 2. Based on the detachable installation of the sealing and cleaning component within the cabinet, this component can close or open the detection opening and clean the detector's port when closed. When not in use, the sealing and cleaning component can close the detection opening to prevent external dust from entering the placement chamber or the detector's port, further enhancing the overall anti-contamination effect. Simultaneously, while closing the detection opening, the component cleans the detector's port, promptly removing dust or trace amounts of residue from previous tests, effectively reducing the risk of cross-contamination between multiple tests and ensuring the accuracy of the test results. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the anti-contamination and cleanliness device for a trace explosive detector according to the present invention;

[0023] Figure 2 for Figure 1 A sectional view;

[0024] Figure 3 for Figure 1 Rear view;

[0025] Figure 4 for Figure 1 The diagram shows the structure of the enclosed cleaning component.

[0026] Figure 5 for Figure 4 A sectional view;

[0027] Figure 6 for Figure 4 Another sectional view;

[0028] Figure 7 for Figure 4 A cross-sectional view from another direction.

[0029] In the diagram: 1. Cabinet; 11. Placement cavity; 111. Heat absorption plate; 12. Top cover; 121. Operation opening; 13. Inspection opening; 14. Interlayer; 15. Heat dissipation cavity; 16. Partition; 17. First filter heat dissipation port; 18. Second filter heat dissipation port; 19. Air pressure balance port; 2. Annular seal; 3. Sealed cleaning component; 31. Mounting base; 311. First mounting cavity; 312. First guide groove; 313. Second guide groove; 313 1. Inclined section; 32. Release shaft; 321. Cleaning roll; 33. Retraction shaft; 34. Telescopic rod; 341. Telescopic end; 3411. Sliding wheel; 35. Abutment cylinder; 36. Belt; 4. Sliding drive mechanism; 5. Rotation drive mechanism; 6. Heat dissipation components; 61. Heat pipe; 611. Heat absorption section; 612. Heat dissipation section; 6121. Heat dissipation plate; 62. Cooling fan; 7. First insulation layer; 8. Second insulation layer; 9. Vibration damping feet. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] See Figures 1-7 The present invention provides a pollution prevention and cleaning device for a trace explosive detector, comprising: a cabinet 1, an annular sealing element 2, and a closed cleaning component 3.

[0034] The cabinet 1 has a placement cavity 11 for housing the detector. The top cover 12 of the cabinet 1 has an operation opening 121, which connects the placement cavity 11 to the external environment and exposes the detector's operation panel. The cabinet 1 also has a detection opening 13, which connects the placement cavity 11 to the external environment and corresponds to the detector's detection port. The detection opening 13 allows the sample to be tested to pass through and be inserted into the detector's detection port. The operation opening 121, located on the top cover 12, allows the user to directly operate the detector's operation panel without opening the cabinet door or removing the detector. The detection opening 13, corresponding to the detector's detection port, allows the user to pass the sample to be tested (such as a sampling test strip) through the detection opening 13 and directly insert it into the detector's detection port, enabling direct testing within the cabinet while protecting the detector.

[0035] Of course, in order to ensure that the part to be tested is inserted into the detection port of the detector, the end face of the detection port of the detector needs to abut against the end face of the cabinet 1 with the detection opening 13 and facing the placement cavity 11, and a sealing treatment can be performed at the abutment to prevent the placement cavity 11 from being contaminated.

[0036] An annular seal 2 is disposed on the top cover 12 and located in the placement cavity 11; the annular seal 2 extends circumferentially along the operating opening 121; the annular seal 2 is used to abut against the detector housing to seal the placement cavity 11. The annular seal 2 is disposed inside the top cover 12 and extends circumferentially along the operating opening 121. When the top cover 12 is closed, the annular seal 2 abuts against the top surface of the detector housing, thereby isolating the placement cavity 11 from the external environment and preventing external dust from entering the placement cavity 11.

[0037] The sealing and cleaning component 3 is detachably installed on the cabinet 1. It can close or open the detection opening 13 and clean the detector's port when closed. When no testing is required, the sealing and cleaning component 3 closes the detection opening 13 to prevent dust from entering the placement chamber 11 or the detection port. When testing is required, the user removes or opens the sealing and cleaning component 3, exposing the detection opening 13 for the part to be tested to pass through. During the process of closing the detection opening 13, the sealing and cleaning component 3 simultaneously cleans the detector's port, removing any dust that may have accumulated on the surface or trace amounts of residue from previous tests, thereby reducing the risk of cross-contamination.

[0038] The working principle of the anti-contamination and cleanliness device for a trace explosive detector of the present invention is as follows: After the operator places the detector into the placement cavity 11 of the cabinet 1, the top cover 12 is closed, and the annular seal 2 is pressed against the top surface of the detector housing, isolating the placement cavity 11 from the external environment. The operation panel of the detector is exposed to the outside through the operation opening 121 of the top cover 12, and the operator can directly operate the detector through this operation opening 121. When testing is required, the operator inserts the item to be tested (such as a sampling test strip) through the detection opening 13 on the cabinet 1 and directly into the detection port of the detector to complete the testing operation. When the testing is completed and the detector is no longer needed, the operator installs the detachable sealing and cleaning component 3, which is installed on the cabinet 1, into the detection opening 13 to seal the detection opening 13 and prevent dust from entering the placement cavity 11 or the detection port through the detection opening 13. During the installation of the sealing and cleaning component 3 into the detection opening 13, the sealing and cleaning component 3 comes into contact with the surface of the detector's detection port and cleans the detection port. When it is necessary to perform the test again, the operator removes the sealing and cleaning component 3 from the detection opening 13, and the detection opening 13 is opened to allow the part to be tested to be inserted into the detection port.

[0039] The cabinet 1 has a placement cavity 11 for placing the detector; the top cover 12 of the cabinet 1 has an operation opening 121, which connects the placement cavity 11 to the external environment and exposes the operation panel of the detector; the cabinet 1 has a detection opening 13, which connects the placement cavity 11 to the external environment and corresponds to the detection port of the detector; the detection opening 13 is used for the object to be tested to pass through and be inserted into the detection port of the detector; an annular seal 2 is provided on the top cover 12 and located in the placement cavity 11; the annular seal 2 extends circumferentially along the operation opening 121; the annular seal 2 is used to abut against the detector housing to seal the placement cavity 11. By creating an operating opening 121 in the top cover 12, users can directly operate the detector's control panel without opening the cabinet door or removing the detector. Simultaneously, an annular seal 2 extending circumferentially along the operating opening 121 is provided inside the top cover 12. When the top cover 12 is closed, the annular seal 2 abuts against the detector's outer shell, thus achieving a complete seal of the placement cavity 11 while exposing the control panel through the operating opening 121. Users can directly insert the object to be tested into the testing port through the testing opening 13 without opening the cabinet door to complete the testing operation. This structural design satisfies the need for direct use within the cabinet while effectively preventing external dust from entering the placement cavity 11 and contaminating the detector.

[0040] The sealing and cleaning component 3 is detachably installed in the cabinet 1. It can close or open the detection opening 13 and clean the detector's port when closed. In non-detection mode, the sealing and cleaning component 3 can close the detection opening 13 to prevent external dust from entering the placement chamber 11 or the detector's port, further improving the overall anti-contamination effect. Simultaneously, while closing the detection opening 13, the sealing and cleaning component 3 cleans the detector's port, promptly removing dust adhering to the surface or trace substances remaining from previous tests, effectively reducing the risk of cross-contamination between multiple tests and ensuring the accuracy of the test results.

[0041] See Figures 4-7Preferably, the enclosed cleaning component 3 includes a mounting base 31, a release shaft 32, a retraction shaft 33, a telescopic rod 34, and an abutment cylinder 35; the mounting base 31 has a first mounting cavity 311, and both the release shaft 32 and the retraction shaft 33 are mounted in the first mounting cavity 311. Both the release shaft 32 and the retraction shaft 33 extend along the height direction of the mounting base 31, and are spaced apart along the length direction of the mounting base 31; a cleaning roll 321 is mounted on the release shaft 32, and the cleaning roll 321 extends from the release shaft 311... 2. The cleaning roll 321 extends to the recovery shaft 33 and covers the detection opening 13. The release shaft 32 is used to release the cleaning roll 321, and the recovery shaft 33 is used to recover the released cleaning roll 321. The telescopic rod 34 is installed in the first mounting cavity 311 and is located between the release shaft 32 and the recovery shaft 33. The abutment cylinder 35 is rotatably installed on the telescopic end 341 of the telescopic rod 34. The rotation axis of the abutment cylinder 35 is parallel to the rotation axis of the release shaft 32. The abutment cylinder 35 is used to press the cleaning roll 321 against the detection port surface of the detector. When the recovery shaft 33 rotates, it will recover the used cleaning roll 321 and pull out the unused cleaning roll 321 from the release shaft 32, so that the abutment cylinder 35 always contacts the detection port with a clean cleaning roll 321 surface, avoiding repeated contact of the cleaning roll 321 area with the detection port caused by the adsorbed contaminants, thus preventing secondary contamination. The contact cylinder 35 is rotatably mounted on the telescopic end 341 of the telescopic rod 34. When the retrieval shaft 33 rotates, driving the cleaning roll 321 to move, the contact cylinder 35 rotates accordingly, converting the sliding friction between the cleaning roll 321 and the contact cylinder 35 into rolling friction, reducing the wear and movement resistance of the cleaning roll 321. The telescopic rod 34 is installed in the first mounting cavity 311 and located between the release shaft 32 and the retrieval shaft 33, so that the cleaning roll 321 forms a tensioned covering path between the release shaft 32 and the retrieval shaft 33, ensuring that the cleaning roll 321 applies stable contact pressure to the surface of the detection port at the contact cylinder 35. When the sealing cleaning component 3 is installed in the cabinet 1, the telescopic rod 34 extends, driving the contact cylinder 35 to press the cleaning roll 321 against the surface of the detector's detection port, keeping the cleaning roll 321 in close contact with the detection port. This achieves both sealing of the detection opening 13 and allows the cleaning roll 321 to absorb dust and residues from the surface of the detection port, serving a dual purpose.

[0042] Cleaning roll 321 can be made of non-woven fabric materials, such as spunlace non-woven fabric, microfiber non-woven fabric, or meltblown non-woven fabric. Microfiber non-woven fabric (such as polyester fiber or polyamide fiber) has high absorbency, effectively removing fine particles and liquid residues, and is lint-free, making it suitable for cleaning precision instruments. Cleaning roll 321 can also be made of non-woven fabric impregnated with resin to form an adhesive cloth. Its surface is sticky, effectively adhering to and removing dust, leaving no residue after wiping. Furthermore, cleaning roll 321 can also be made of polypropylene (PP) adhesive paper rolls, or wiping materials composed of wood pulp and polyester fibers. To meet specific usage requirements, cleaning roll 321 can also be made of anti-static materials, such as anti-static non-woven fabric or polypropylene fiber materials, to prevent static electricity generated during cleaning from affecting the detector.

[0043] In addition, the closed cleaning component 3 can be powered by a built-in battery, and a contact switch can be installed between the cabinet 1 and the closed cleaning component 3. When the closed cleaning component 3 closes the detection opening 13, the cleaning function is triggered. Of course, the closed cleaning component 3 can also be a traditional switch button, and the cleaning function can be manually activated after the closed cleaning component 3 is installed and the detection opening 13 is closed.

[0044] See Figure 5 and Figure 6Preferably, the first mounting cavity 311 has a first guide groove 312 and a second guide groove 313 on its sidewall along the height direction of the mounting base 31. The first guide groove 312 and the second guide groove 313 both extend along the length direction of the mounting base 31, and the first guide groove 312 and the second guide groove 313 are spaced apart along the width direction of the mounting base 31. The extended end of the second guide groove 313 is inclined along the width direction of the mounting base 31 to form an inclined section 3131, and the inclined section 3131 is inclined close to the first guide groove 312. The telescopic rod 34 is slidably mounted in the first guide groove 312. The telescopic end 341 is provided with a sliding wheel 3411, which is slidably mounted in the second guide groove 313. The telescopic rod 34 slides along the first guide groove 312, driving the sliding wheel 3411 to slide along the second guide groove 313, thereby causing the telescopic end 341 to extend and retract along the width direction of the mounting base 31. When the telescopic rod 34 slides along the first guide groove 312, the sliding wheel 3411 slides synchronously in the second guide groove 313. Since the extended end of the second guide groove 313 is inclined along the width direction of the mounting base 31 to form an inclined section 3131 and is inclined close to the first guide groove 312, the sliding wheel 3411 is displaced in the width direction when it slides into the inclined section 3131, thereby driving the telescopic end 341 of the telescopic rod 34 to retract along the width direction of the mounting base 31. Through the cooperation of the first guide groove 312 and the second guide groove 313, the sliding motion of the telescopic rod 34 along the length direction is converted into the telescopic end 341 along the width direction, realizing the telescopic action of the telescopic rod 34. When the sliding wheel 3411 is in the non-inclined section of the second guide groove 313, the telescopic end 341 remains in the extended state, and the abutment cylinder 35 abuts against the cleaning roll 321, so that the cleaning roll 321 abuts against the detection port of the detector. The telescopic end 341 will remain continuously extended in the non-inclined section as the telescopic rod 34 moves (i.e., the telescopic rod 34 moves along the first guide groove 312).

[0045] See Figure 6 and Figure 7Preferably, the mounting base 31 is equipped with a sliding drive mechanism 4, a rotating drive mechanism 5, and a control module. The sliding drive mechanism 4 and the rotating drive mechanism 5 are electrically connected to the control module. The sliding drive mechanism 4 drives the telescopic rod 34 to slide along the first guide groove 312. The rotating drive mechanism 5 drives the recovery shaft 33, and the recovery shaft 33 and the release shaft 32 are connected by a belt 36. The sliding drive mechanism 4 is driven by the telescopic rod 34. Under the control of the control module, the telescopic rod 34 is driven to slide along the first guide groove 312, so that the telescopic end 341 extends or retracts along the width direction of the mounting base 31, thereby automatically controlling the contact cylinder 35 to press the cleaning roll 321 against the surface of the detector's detection port or remove it from the detection port. The rotation drive mechanism 5 is connected to the recycling shaft 33. Under the control of the control module, the recycling shaft 33 is driven to rotate, automatically recycling the used cleaning roll 321. At the same time, the release shaft 32 is driven to rotate synchronously through the belt 36, so that the release shaft 32 and the recycling shaft 33 are linked to ensure that the cleaning roll 321 maintains an appropriate tension during the recycling process, and avoids the cleaning roll 321 from becoming loose and affecting the cleaning effect.

[0046] The sliding drive mechanism 4 can employ a micro stepper motor in conjunction with a lead screw and nut mechanism. The lead screw converts the motor's rotational motion into the linear motion of the nut, thereby driving the telescopic rod 34 to slide along the first guide groove 312. This method offers high control precision and allows for accurate holding of the telescopic rod 34 at any position. Alternatively, the sliding drive mechanism 4 can use a micro DC motor in conjunction with a gear and rack mechanism. The meshing of the gears and rack converts rotational motion into linear motion, resulting in a compact structure and lower cost. The sliding drive mechanism 4 can also employ an electromagnetic push rod or a voice coil motor, directly driving the telescopic rod 34 linearly via electromagnetic force. This provides fast response and eliminates the need for transmission conversion components. The rotation drive mechanism 5 drives the recycling shaft 33 to rotate and recycle the cleaning roll 321. It can employ a micro stepper motor or a micro DC motor. The motor's output shaft can be directly connected to the recycling shaft 33, or power can be transmitted via a worm gear or gear set. The control module can employ a single-chip microcomputer or an embedded microcontroller, integrating motor drive circuitry and a communication interface, enabling timing control of the sliding drive mechanism 4 and the rotation drive mechanism 5.

[0047] See Figure 2 and Figure 3In addition, a pollution prevention and cleanliness device for a trace explosive detector also includes a heat dissipation component 6, which includes multiple heat pipes 61. The multiple heat pipes 61 are spaced apart along the width direction of the cabinet 1. Each heat pipe 61 has a heat absorption section 611 and a heat dissipation section 612 connected in sequence. The cabinet 1 has a mezzanine 14 and a heat dissipation cavity 15. The outer contour of the cross-section of the mezzanine 14 is U-shaped. The heat dissipation cavity 15 is located below the placement cavity 11, and the mezzanine 14 and the heat dissipation cavity 15 are separated by a partition 16. Both side plates of the placement cavity 11 along the length direction of the cabinet 1 are heat absorption plates 111. The heat absorption section 611 is installed on the heat absorption plate 111 and is located in the mezzanine 14. The heat dissipation section 612 passes through the partition 16 and is located in the heat dissipation cavity 15. The heat dissipation section 612 has a heat dissipation plate 6121. Both ends of the cabinet 1 along its own length direction are provided with a first filter heat dissipation port 17, which connects the heat dissipation cavity 15 to the external environment. The cabinet 1 is provided with a mezzanine 14 and a heat dissipation cavity 15. The outer contour of the cross-section of the mezzanine 14 is U-shaped, that is, the mezzanine 14 surrounds the placement cavity 11 from the bottom and the left and right sides. The heat dissipation cavity 15 is located below the placement cavity 11. The mezzanine 14 and the heat dissipation cavity 15 are separated by a partition 16. The two side panels of the placement cavity 11 along the length of the cabinet 1 are themselves heat-absorbing plates 111. The heat-absorbing section 611 of the heat pipe 61 is installed on the heat-absorbing plate 111 and located in the interlayer 14. When the detector works, the heat generated is conducted to the heat-absorbing plates 111 on both sides of the placement cavity 11, and the heat-absorbing section 611 absorbs the heat. The heat-dissipating section 612 of the heat pipe 61 passes through the partition 16 and enters the heat dissipation cavity 15, and transfers the heat to the heat dissipation plate 6121 of the heat dissipation section 612. The heat dissipation plate 6121 releases the heat into the air in the heat dissipation cavity 15. The first filter heat dissipation port 17 at both ends of the length of the cabinet 1 connects the heat dissipation cavity 15 with the external environment, so that the heated air in the heat dissipation cavity 15 is discharged from the cabinet 1 through the first filter heat dissipation port 17 through natural convection. At the same time, cold air from outside is replenished into the heat dissipation cavity 15 through the first filter heat dissipation port 17 at the other end, forming a circulating airflow that continuously carries away the heat. In simple terms, the heat generated by the detector is efficiently conducted from the side wall of the placement cavity 11 to the heat dissipation cavity 15 using the phase change heat transfer principle of the heat pipe 61, and then discharged through the first filter heat dissipation port 17 via natural convection.

[0048] Preferably, the detection opening 13 is located at one end of the cabinet 1 along its width, and the other end has a second filter heat dissipation opening 18, which connects the heat dissipation cavity 15 to the external environment. The heat dissipation component 6 also includes a cooling fan 62, which is installed in the heat dissipation cavity 15 and located at the second filter heat dissipation opening 18. The cooling fan 62 is used to exhaust the hot air in the heat dissipation cavity 15 from the second filter heat dissipation opening 18 to the external environment. When the heat generated by the detector is conducted to the heat dissipation cavity 15 through the heat pipe 61, the cooling fan 62 starts, actively exhausting the heated air in the heat dissipation cavity 15 from the second filter heat dissipation opening 18 to the external environment. At the same time, cold air from outside enters the heat dissipation cavity 15 from the first filter heat dissipation openings 17 at both ends of the cabinet 1 along its length, forming forced convection, accelerating the heat dissipation in the heat dissipation cavity 15, and further improving the heat dissipation efficiency. The detection opening 13 and the second filter heat dissipation opening 18 are located at opposite ends of the width of the cabinet 1. The hot air exhausted by the cooling fan 62 will not blow directly onto the detection opening 13 or the operator, thus avoiding the impact of hot air on the detection operation and the operator. At the same time, the cooling fan 62 only acts on the heat dissipation cavity 15. The placement cavity 11 is isolated from the heat dissipation cavity 15 by the interlayer 14 and the partition 16. The airflow generated by the cooling fan 62 will not enter the placement cavity 11 and will not interfere with the detection port of the detector or the object to be tested. This improves the heat dissipation capacity and maintains the anti-contamination protection of the detector.

[0049] In addition, the first filter heat dissipation port 17 and the second filter heat dissipation port 18 can use traditional metal dustproof mesh or nylon dustproof mesh as filter elements.

[0050] See Figure 2Preferably, a first heat insulation layer 7 is provided on the side wall of the interlayer 14 along the length of the cabinet 1, and the first heat insulation layer 7 is located between the heat absorption section 611 and the side wall of the interlayer 14; a second heat insulation layer 8 is provided on the end face of the bottom plate of the placement cavity 11 facing the interlayer 14. The first heat insulation layer 7 and the second heat insulation layer 8 can be one of aerogel felt, glass fiber board, ceramic fiber board, foamed rubber heat insulation board, and mineral wool board. The first heat insulation layer 7 is located between the heat absorption section 611 and the side wall of the interlayer 14, blocking the path of heat conduction from the heat absorption section 611 to the side wall of the interlayer 14, so that the heat absorbed by the heat absorption section 611 is forcibly guided to the heat dissipation section 612 of the heat pipe 61, avoiding heat loss to the outer wall of the cabinet 1, and improving the heat dissipation efficiency of the heat pipe 61. At the same time, the second heat insulation layer 8 is provided on the end face of the bottom plate of the placement cavity 11 facing the interlayer 14, and the second heat insulation layer 8 is located between the bottom plate of the placement cavity 11 and the interlayer 14. Since the bottom plate of the placement cavity 11 is directly below the interlayer 14, and the heat absorption section 611 of the heat pipe 61 is located inside the interlayer 14, if there is no heat insulation between the bottom plate of the placement cavity 11 and the interlayer 14, the heat in the placement cavity 11 may be conducted downwards through the bottom plate to the interlayer 14, interfering with the normal operating temperature field of the heat absorption section 611 in the interlayer 14, and even causing heat to accumulate in the interlayer 14. The second heat insulation layer 8 forms a thermal barrier between the bottom plate of the placement cavity 11 and the interlayer 14, preventing the heat in the placement cavity 11 from being transferred downwards through the bottom plate to the interlayer 14, ensuring that the heat absorption section 611 in the interlayer 14 mainly absorbs the detector heat conducted laterally from the heat absorption plate 111, and avoiding mutual interference of heat in the interlayer 14.

[0051] See Figure 3 Preferably, the detection opening 13 is located at one end of the cabinet 1 along its width, and the other end has an air pressure balancing port 19. The air pressure balancing port 19 connects the placement cavity 11 with the external environment, and the air pressure balancing port 19 is equipped with a filter. Since the placement cavity 11 forms a relatively sealed space under the closure of the annular seal 2, the heat generated when the detector is working will cause the air temperature inside the placement cavity 11 to rise and its volume to expand, resulting in the air pressure inside the placement cavity 11 being higher than that of the external environment. When the detector stops working and the placement cavity 11 cools down, the internal air volume will contract, which may cause a negative pressure to form inside the placement cavity 11. The air pressure balancing port 19 connects the placement cavity 11 with the external environment, keeping the air pressure inside the placement cavity 11 balanced with the external environment. This avoids the pressure difference between the inside and outside caused by the seal from causing additional stress on the top cover 12 or the annular seal 2, and also prevents external dust from being sucked into the placement cavity 11 through tiny gaps due to the negative pressure. Meanwhile, the pressure balance port 19 is equipped with a filter. When external air enters the placement chamber 11 through the pressure balance port 19, the filter filters and intercepts dust particles in the air, ensuring that the air entering the placement chamber 11 is clean air and will not introduce dust pollution detectors due to pressure balance.

[0052] Preferably, the filter element is a hydrophobic and breathable membrane, HEPA filter cotton, activated carbon filter, or antistatic filter. A hydrophobic and breathable membrane has excellent air permeability and hydrophobic properties, allowing air to pass through while maintaining air pressure balance, and blocking the intrusion of liquid water and dust particles. It is suitable for environments with high humidity or where liquid splashing may occur. HEPA filter cotton has a high-efficiency particulate filtration capacity, capable of filtering most dust particles with a diameter ≥0.3 micrometers in the air. It is suitable for environments with high dust concentrations, ensuring a high level of cleanliness for the air entering the placement chamber 11. Activated carbon filter, while filtering dust particles, can also adsorb harmful gases and odors in the air. It is suitable for environments where volatile organic compounds or chemical odors may be present, preventing harmful gases from entering the placement chamber 11 and interfering with the detector's sensor. Antistatic filter, while filtering dust, also has antistatic properties, preventing the accumulation of static electricity caused by airflow friction from potentially affecting the detector. It is suitable for static-sensitive environments. Users can select the appropriate filter element type according to their actual usage scenario.

[0053] Preferably, the bottom of the cabinet 1 is provided with multiple vibration-damping feet 9, which are distributed circumferentially along the bottom of the cabinet 1. During operation, the moving parts of the detector, such as the fan and motor, will generate mechanical vibrations. If these vibrations are directly transmitted to the cabinet 1, they may cause resonance in the cabinet 1, generating noise and even affecting the detection accuracy of the detector itself. The vibration-damping feet 9, located at the bottom of the cabinet 1, form an elastic support between the cabinet 1 and the mounting surface. This effectively absorbs and attenuates the vibrations generated by the detector during operation, as well as the vibrations transmitted to the cabinet 1 from the external environment. This reduces the transmission of vibrations to the cabinet 1 and the detector inside the placement cavity 11, thereby reducing noise caused by vibrations and preventing vibrations from affecting the precision components inside the detector.

[0054] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pollution prevention and purification device for a trace explosive detector, characterized in that, include: The cabinet (1) has a placement cavity (11) for placing a detector; the top cover (12) of the cabinet (1) has an operation opening (121) that connects the placement cavity (11) to the external environment and exposes the operation panel of the detector; the cabinet (1) has a detection opening (13) that connects the placement cavity (11) to the external environment and corresponds to the detection port of the detector; the detection opening (13) is used for the object to be tested to pass through and be inserted into the detection port of the detector; An annular seal (2) is provided on the top cover (12) and located in the placement cavity (11); the annular seal (2) extends circumferentially along the operating opening (121); the annular seal (2) is used to abut against the detector housing to close the placement cavity (11). The closed cleaning component (3) is detachably installed on the cabinet (1). The closed cleaning component (3) can close or open the detection opening (13) and can clean the detection port of the detector when closed.

2. The anti-contamination and cleanliness device for a trace explosive detector according to claim 1, characterized in that, The enclosed cleaning component (3) includes a mounting base (31), a release shaft (32), a retraction shaft (33), a telescopic rod (34), and an abutment cylinder (35); the mounting base (31) has a first mounting cavity (311), the release shaft (32) and the retraction shaft (33) are both mounted in the first mounting cavity (311), the release shaft (32) and the retraction shaft (33) both extend along the height direction of the mounting base (31), and the release shaft (32) and the retraction shaft (33) are spaced apart along the length direction of the mounting base (31); a cleaning roll (321) is mounted on the release shaft (32), and the cleaning roll (321) extends from the release shaft (32) to the abutment cylinder (35). The recovery shaft (33) covers the detection opening (13); the release shaft (32) is used to release the cleaning roll (321), and the recovery shaft (33) is used to recover the released cleaning roll (321); the telescopic rod (34) is installed in the first mounting cavity (311), and the telescopic rod (34) is located between the release shaft (32) and the recovery shaft (33); the abutment cylinder (35) is rotatably installed on the telescopic end (341) of the telescopic rod (34), the rotation axis of the abutment cylinder (35) is parallel to the rotation axis of the release shaft (32), and the abutment cylinder (35) is used to press the cleaning roll (321) against the detection port surface of the detector.

3. The anti-contamination and cleanliness device for a trace explosive detector according to claim 2, characterized in that, The first mounting cavity (311) has a first guide groove (312) and a second guide groove (313) on its sidewall along the height direction of the mounting base (31). The first guide groove (312) and the second guide groove (313) both extend along the length direction of the mounting base (31), and the first guide groove (312) and the second guide groove (313) are spaced apart along the width direction of the mounting base (31). The extended end of the second guide groove (313) is inclined along the width direction of the mounting base (31) to form an inclined section (3131). The inclined section (3131) is inclined close to the first guide groove (312); the telescopic rod (34) is slidably installed in the first guide groove (312); the telescopic end (341) is provided with a sliding wheel (3411), and the sliding wheel (3411) is slidably installed in the second guide groove (313); the telescopic rod (34) slides along the first guide groove (312), driving the sliding wheel (3411) to slide along the second guide groove (313), thereby causing the telescopic end (341) to extend and retract along the width direction of the mounting base (31).

4. The anti-contamination and cleanliness device for a trace explosive detector according to claim 3, characterized in that, The mounting base (31) is equipped with a sliding drive mechanism (4), a rotation drive mechanism (5) and a control module. The sliding drive mechanism (4) and the rotation drive mechanism (5) are electrically connected to the control module. The sliding drive mechanism (4) drives the telescopic rod (34) to slide along the first guide groove (312). The rotation drive mechanism (5) drives the recovery shaft (33) to drive the recovery shaft (33) and the release shaft (32) through a belt (36).

5. The anti-contamination and cleanliness device for a trace explosive detector according to claim 1, characterized in that, The aforementioned trace explosive detector anti-contamination cleanroom device further includes a heat dissipation component (6), which includes multiple heat pipes (61) spaced apart along the width of the cabinet (1). Each heat pipe (61) has a heat absorption section (611) and a heat dissipation section (612) connected in sequence. The cabinet (1) has a mezzanine (14) and a heat dissipation cavity (15). The outer contour of the cross-section of the mezzanine (14) is U-shaped. The heat dissipation cavity (15) is located below the placement cavity (11), and the mezzanine (14) and the heat dissipation cavity (15) are separated by a partition ( 16) Separation; The two side panels of the placement cavity (11) along the length direction of the cabinet (1) are heat-absorbing plates (111), the heat-absorbing section (611) is installed on the heat-absorbing plate (111), and the heat-absorbing section (611) is located in the interlayer (14); The heat-dissipating section (612) passes through the partition (16) and is located in the heat dissipation cavity (15), and the heat dissipating section (612) has a heat dissipation plate (6121); The cabinet (1) is provided with a first filter heat dissipation port (17) at both ends along its own length direction, and the first filter heat dissipation port (17) connects the heat dissipation cavity (15) with the external environment.

6. The anti-contamination and cleanliness device for a trace explosive detector according to claim 5, characterized in that, The detection opening (13) is located at one end of the cabinet (1) along its width direction, and the other end is provided with a second filter heat dissipation port (18). The second filter heat dissipation port (18) connects the heat dissipation cavity (15) with the external environment. The heat dissipation component (6) also includes a heat dissipation fan (62). The heat dissipation fan (62) is installed in the heat dissipation cavity (15) and located at the second filter heat dissipation port (18). The heat dissipation fan (62) is used to exhaust the hot air of the heat dissipation cavity (15) from the second filter heat dissipation port (18) to the external environment.

7. The anti-contamination and cleanliness device for a trace explosive detector according to claim 5, characterized in that, The interlayer (14) has a first heat insulation layer (7) on the side wall along the length of the cabinet (1), and the first heat insulation layer (7) is located between the heat absorption section (611) and the side wall of the interlayer (14); the bottom plate of the placement cavity (11) has a second heat insulation layer (8) on the end face facing the interlayer (14).

8. The anti-contamination and cleanliness device for a trace explosive detector according to claim 1, characterized in that, The detection opening (13) is located at one end of the cabinet (1) along its width direction, and the other end is provided with an air pressure balance port (19). The air pressure balance port (19) connects the placement cavity (11) with the external environment, and the air pressure balance port (19) is provided with a filter.

9. The anti-contamination and cleanliness device for a trace explosive detector according to claim 8, characterized in that, The filter element is a hydrophobic and breathable membrane, HEPA filter cotton, activated carbon filter, or antistatic filter.

10. The anti-contamination and cleanliness device for a trace explosive detector according to claim 1, characterized in that, The bottom of the cabinet (1) is provided with multiple vibration damping feet (9), and the multiple vibration damping feet (9) are distributed circumferentially along the bottom of the cabinet (1).

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