A portable air particulate matter detection device

Abstract

The utility model relates to related technical field of detection device especially, and it is a kind of portable air particulate matter detection device, including detection device, the surface of detection device is equipped with crank handle subassembly, the top of detection device is connected with connecting pipe, the top of connecting pipe is equipped with clamping assembly, the surface of crank handle subassembly is connected with connecting wire, the top of connecting wire is provided with waterproof device, the surface of waterproof device is provided with buffer device. This a kind of portable air particulate matter detection device, by the setting of waterproof device and buffer device, can be sealed structure of waterproof device is resisted to downhole high humidity dust environment, prevent the PCB board of sensor module group from damp short circuit, metal pin rust, rely on buffer device absorption collision energy simultaneously, avoid shell breakage and internal sensor displacement, guarantee detection data accurate, provide reliable basis for personnel downhole safety judgment.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a portable air particulate matter detection device. Background Technology

[0002] A detection device is a device that integrates various specialized sensors, data processing modules, and signal output components to collect, analyze, and provide feedback on specific physical, chemical, and biological indicators of a target environment or object in real time. It can be designed in various forms, such as portable or fixed, depending on the application scenario. It captures target indicator signals through sensors, converts them into identifiable data through internal modules, and presents the results via displays, audio-visual prompts, or data transmission. It is widely used in environmental monitoring, industrial production, and safety protection, providing users with accurate and timely indicator information to assist in judging environmental safety, object status, or production compliance. It is an important tool for ensuring operational safety and improving monitoring efficiency. However, scenarios such as environmental monitoring, industrial inspection, and outdoor operations require flexible and rapid acquisition of air particulate matter concentration data from different locations. Fixed detection devices cannot meet the needs of mobile detection; therefore, a portable air particulate matter detection device is particularly needed.

[0003] Chinese Patent CN219348793U, published on July 14, 2023, discloses a portable air particulate matter detection device. The device uses a connecting wire and a crank assembly including a handle, connecting rod, and rotating shaft to facilitate the outward extension of the connecting wire. Simultaneously, the detection head assembly, including an outer shell, a light-transmitting layer, a mounting cavity, a sensor module group, and connecting wires, allows for the detection of ambient air quality in underground wells when the detection head assembly is far from the human body. However, this portable air particulate matter detection device faces challenges in underground environments with high humidity, high dust concentrations, and potential collision risks. The detection head shell lacks waterproof and impact-resistant features, leading to moisture damage to the PCB board of the sensor module group, short circuits, and corrosion of metal pins. Furthermore, the collision risks underground can directly cause damage to the outer shell and displacement of the internal sensors, resulting in distorted detection data and affecting the assessment of personnel safety when entering the well. Utility Model Content

[0004] The purpose of this invention is to provide a portable airborne particulate matter detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a portable air particulate matter detection device, comprising a detection device, a crank assembly mounted on the surface of the detection device, a connecting tube connected to the top of the detection device, a clamping assembly mounted on the top of the connecting tube, a connecting wire connected to the surface of the crank assembly, a waterproof device provided at the top of the connecting wire, and a buffer device provided on the surface of the waterproof device. The waterproof device includes a front cover connected above the connecting wire, a sealing groove on the inner side of the front cover, a rear cover connected to the surface of the front cover, a sealing gasket connected to the inner side of the rear cover, ear plates connected to the sides of both the front and rear covers, waterproof gaskets connected to the outer side of the mounting holes on the surface of the ear plates, mounting cavities formed inside the front and rear covers, silicone pads lined inside the mounting cavities, and cushioning devices provided on the outer sides of both the front and rear covers.

[0006] Preferably, the sealing gasket and the sealing groove have a corresponding and compatible structure, and the sealing gasket is embedded in the sealing groove and fits tightly against the inner wall of the sealing groove.

[0007] Preferably, the ear plates on the sides of the front cover and the rear cover are symmetrically distributed, and the ear plates of the front cover and the rear cover are fitted together in a one-to-one correspondence. The mounting holes on the surface of the ear plates are coaxially arranged, and the waterproof gasket covers the entire opening end of the mounting hole.

[0008] Preferably, the buffer device includes a reinforcing rib, which is fixedly connected to the outer wall of the front cover and the rear cover. The outer end of the reinforcing rib is connected to a semi-annular connecting seat. A fixing rod is connected above the semi-annular connecting seat. A damping groove is formed inside the fixing rod. A damping block is slidably connected to the inner wall of the damping groove. A guide block is connected to the side of the damping block. A guide groove is formed inside the damping groove. A buffer rod is connected to the outer end of the fixing rod through the top of the damping block. A buffer spring is connected to the outer side of the buffer rod. A buffer washer is connected to the top of both the buffer rod and the buffer spring.

[0009] Preferably, the reinforcing ribs are symmetrically distributed along the outer walls of the front and rear covers, and each group of reinforcing ribs is connected to a set of semi-circular connecting seats.

[0010] Preferably, the guide block and the guide groove have a corresponding and compatible structure, and the guide block is embedded in the guide groove and slides against the inner wall of the guide groove.

[0011] Preferably, the buffer spring is sleeved on the outside of the buffer rod, and the two ends of the buffer spring are in close contact with the top of the damping block and the inner wall of the top of the fixed rod, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This portable air particulate matter detection device, through the setting of a waterproof device and a buffer device, can resist the high humidity and dust environment underground by means of the sealing structure of the waterproof device, prevent the PCB board of the sensor module group from getting damp and short-circuiting, and prevent the metal pins from rusting. At the same time, the buffer device absorbs the collision energy, avoids damage to the outer shell and displacement of the internal sensor, ensures the accuracy of the detection data, and provides a reliable basis for personnel to go down into the well for safety judgment. Attached Figure Description

[0013] Figure 1 This is a side view of the structure of the present utility model; Figure 2 This is a schematic diagram of the waterproof device structure of this utility model; Figure 3 This is a schematic diagram of the buffer device structure of this utility model; Figure 4 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Detection device; 2. Crank handle assembly; 3. Connecting pipe; 4. Clamping assembly; 5. Connecting wire; 6. Waterproof device; 601. Front cover; 602. Sealing groove; 603. Rear cover; 604. Sealing gasket; 605. Ear plate; 606. Waterproof rubber gasket; 607. Mounting cavity; 608. Silicone gasket; 7. Buffer device; 701. Reinforcing rib; 702. Semi-circular connecting seat; 703. Fixing rod; 704. Damping groove; 705. Damping block; 706. Guide block; 707. Guide groove; 708. Buffer rod; 709. Buffer spring; 710. Buffer gasket. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a portable air particulate matter detection device, including a detection device 1, a crank assembly 2 mounted on the surface of the detection device 1, a connecting tube 3 connected to the top of the detection device 1, a clamping assembly 4 mounted on the top of the connecting tube 3, a connecting wire 5 connected to the surface of the crank assembly 2, a waterproof device 6 provided at the top of the connecting wire 5, and a buffer device 7 provided on the surface of the waterproof device 6. The waterproof device 6 includes a front cover 601, which is connected above the connecting wire 5. A sealing groove 602 is formed on the inner side of the front cover 601. A rear cover 603 is connected to the surface of the front cover 601, and a sealing gasket 604 is connected to the inner side of the rear cover 603. Ear plates 605 are connected to the sides of both the front cover 601 and the rear cover 603. Waterproof gaskets 606 are connected to the outer sides of the mounting holes formed on the surface of the ear plates 605. Mounting cavities 607 are formed inside both the front cover 601 and the rear cover 603, and silicone gaskets 608 are laid inside the mounting cavities 607. Buffer devices 7 are provided on the outer sides of both the front cover 601 and the rear cover 603. During assembly, the sensor module assembly is first placed in the mounting cavity 607 inside the front cover 601. Because a silicone pad 608 is installed inside the mounting cavity 607, it adheres to the surface of the sensor module assembly, forming a preliminary seal and buffer. This prevents the sensor module assembly from directly contacting the inner wall of the mounting cavity 607, thus avoiding wear and tear. It also prevents some dust from entering the gaps in the sensor module assembly. Then, the rear cover 603 is aligned with the front cover 601, aligning the sealing gasket 604 connected to the inner side of the rear cover 603 with the sealing groove 602 on the inner side of the front cover 601. The rear cover 603 is then pushed until the sealing gasket 604 is fully embedded in the sealing groove 602. 2. At this time, the sealing gasket 604 is tightly fitted to the inner wall of the sealing groove 602, which can prevent external moisture and dust from entering the mounting cavity 607 from the splice of the front and rear covers. Then, align the ear plates 605 on the sides of the front cover 601 and the rear cover 603, so that the mounting holes on the surfaces of the ear plates 605 are coaxial. Pass the fixing screw through the mounting hole. Because there is a waterproof gasket 606 connected to the outside of the mounting hole, when the screw is tightened, it will squeeze the waterproof gasket 606, causing the waterproof gasket 606 to deform and fill the gap between the screw and the mounting hole, preventing moisture from seeping in from the gap between the screw and the mounting hole. During the use of the device, the connection part of the connecting wire 5 and the front cover 601, through the front The structural design of the cover 601 and the extended coverage of the silicone pad 608 further reduce the gaps in this area. At the same time, the silicone pad 608 inside the mounting cavity 607 can absorb a small amount of moisture that may accidentally seep in, preventing moisture from directly contacting the sensor module assembly. Through the cooperation of the multi-layer structure, waterproof protection is achieved for the internal components of the mounting cavity 607, ensuring that the sensor module assembly can work normally in a humid environment. When the buffer device 7 on the outside of the front cover 601 and the rear cover 603 is impacted, the overall structure of the waterproof device 6 can remain stable, preventing the sealing gasket 604 from dislodging from the sealing groove 602 or the waterproof pad 606 from being damaged due to the impact, thus maintaining the waterproof effect.

[0017] Furthermore, the sealing gasket 604 and the sealing groove 602 have a corresponding and compatible structure, and the sealing gasket 604 is embedded in the sealing groove 602 and fits tightly against the inner wall of the sealing groove 602. Through the setting of the sealing groove 602 and the sealing gasket 604, the sealing groove 602 can play a positioning role for the sealing gasket 604, preventing the sealing gasket 604 from shifting when the rear cover 603 is connected to the front cover 601, ensuring that the sealing gasket 604 can be accurately embedded in the target position. The tightly fitted structure can completely fill the gap at the splicing of the front cover 601 and the rear cover 603, forming the first waterproof and dustproof barrier, blocking external moisture and dust from directly invading the installation cavity 607 from the splicing gap. At the same time, the deformation characteristics of the sealing gasket 604 can adapt to the small errors when the front and rear covers are spliced, maintain a stable sealing effect, and avoid sealing failure due to structural misalignment.

[0018] Furthermore, the ear plates 605 on the sides of the front cover 601 and the rear cover 603 are symmetrically distributed, and the ear plates 605 of the front cover 601 and the rear cover 603 are fitted one-to-one. The mounting holes on the surface of the ear plates 605 are coaxially arranged, and the waterproof gasket 606 covers the entire opening end of the mounting hole. Through the arrangement of the ear plates 605 and the waterproof gasket 606, the symmetrically distributed and correspondingly fitted ear plates 605 can ensure that the front cover 601 and the rear cover 603 are evenly stressed when spliced, avoiding excessive local stress that could cause deformation of the front and rear covers. At the same time, the coaxial mounting holes facilitate the quick insertion of fixing screws, improving assembly efficiency. The waterproof gasket 606 covering the entire opening end of the mounting hole will be fully squeezed when the screw is tightened, which can not only fill the gap between the screw and the mounting hole, but also cover the surrounding area of ​​the mounting hole, forming a second waterproof barrier to prevent moisture from seeping in from the screw connection, further enhancing the overall protective performance of the waterproof device 6.

[0019] Furthermore, the buffer device 7 includes a reinforcing rib 701, which is fixedly connected to the outer walls of the front cover 601 and the rear cover 603. A semi-annular connecting seat 702 is connected to the outer end of the reinforcing rib 701. A fixing rod 703 is connected above the semi-annular connecting seat 702. A damping groove 704 is formed inside the fixing rod 703. A damping block 705 is slidably connected to the inner wall of the damping groove 704. A guide block 706 is connected to the side of the damping block 705. A guide groove 707 is formed inside the damping groove 704. A buffer rod 705 is connected above the damping block 705, penetrating through the outer end of the fixing rod 703. 8. A buffer spring 709 is connected to the outer side of the buffer rod 708. Both the top of the buffer rod 708 and the buffer spring 709 are connected to buffer washers 710. Through the buffer device 7, when the waterproof device 6 falls into the well due to gravity and generates an impact force, the external force first acts on the buffer washer 710. The buffer washer 710 transmits the external force to the buffer rod 708 and the buffer spring 709 connected to it. At this time, the buffer rod 709 pushes the damping block 705 connected to its bottom end to slide downwards along the damping groove 704 inside the fixed rod 703. Simultaneously, the buffer spring 709 deforms due to compression. The elastic deformation absorbs part of the impact energy, initially mitigating the impact of external forces on the front cover 601 and the rear cover 603. During the sliding process of the damping block 705, the guide block 706 connected to its side moves synchronously along the guide groove 707 inside the damping groove 707, preventing the damping block 705 from rotating or shifting during sliding, ensuring that the buffer rod 708 always extends and retracts in a fixed direction, maintaining the stability of the buffer structure. When the external impact force disappears, the buffer spring 709 releases its elastic restoring force, pushing the damping block 705 to slide upward and reset along the damping groove 704. The damping block 705 drives the buffer rod 708 and the buffer pad. The ring 710 returns to its initial position synchronously to withstand the next impact. At the same time, the reinforcing rib 701, which is fixedly connected to the outer wall of the front cover 601 and the rear cover 603, can evenly distribute the residual impact force that was not absorbed by the buffer structure to the entire waterproof device 6, so as to avoid excessive local stress that could cause deformation of the front cover 601 or the rear cover 603. The semi-circular connecting seat 702 at the outer end of the reinforcing rib 701, through its stable connection with the fixing rod 703, ensures the connection strength between the buffer device 7 and the waterproof device 6, and prevents the buffer device 7 from falling off during the buffering process, thereby achieving effective protection for the waterproof device 6 and the internal sensor module group.

[0020] Furthermore, the reinforcing ribs 701 are symmetrically distributed along the outer walls of the front cover 601 and the rear cover 603, and each set of reinforcing ribs 701 is connected to a set of semi-circular connecting seats 702. Through the setting of the reinforcing ribs 701, the symmetrically distributed structure can make the outer wall of the waterproof device 6 be subjected to uniform force. When the buffer device 7 is subjected to impact, the reinforcing ribs 701 can transfer the impact force from the semi-circular connecting seats 702 to multiple positions of the front cover 601 and the rear cover 603, avoiding local stress concentration that could lead to deformation of the outer wall. At the same time, the design of each set of reinforcing ribs 701 corresponding to a set of semi-circular connecting seats 702 can ensure that each buffer component has a stable support structure, preventing the semi-circular connecting seats 702 from breaking at the connection between the front cover 601 and the rear cover 603 during the buffering process, and improving the overall structural strength of the buffer device 7.

[0021] Furthermore, the guide block 706 and the guide groove 707 are correspondingly fitted, and the guide block 706 is embedded in the guide groove 707 and slides against the inner wall of the guide groove 707. Through the setting of the guide block 706 and the guide groove 707, the fitted and close structure can provide precise guidance for the sliding of the damping block 705, avoid the damping block 705 from rotating or deviating when moving along the damping groove 704, ensure that the buffer rod 708 always extends and retracts in a fixed direction, and prevent the buffer rod 708 from getting stuck against the inner wall of the fixed rod 703 due to misalignment, which would affect the buffering effect. At the same time, the sliding fit design can reduce the frictional wear between the guide block 706 and the guide groove 707, extend the service life of the components, and maintain the long-term stable operation of the buffer device 7.

[0022] Furthermore, the buffer spring 709 is sleeved on the outside of the buffer rod 708, and the two ends of the buffer spring 709 are in close contact with the top of the damping block 705 and the inner wall of the top of the fixing rod 703, respectively. Through the setting of the buffer spring 709, the sleeved structure can prevent the buffer spring 709 from shifting or twisting during deformation, ensuring that the spring always stretches and contracts along the axial direction of the buffer rod 708, ensuring the stable transmission of buffering force. The design of the two ends in close contact allows the buffer spring 709 to fully deform when compressed, maximizing the absorption of impact energy and mitigating the impact of external force on the waterproof device 6. After the impact force disappears, the elastic restoring force of the spring can quickly push the damping block 705 and the buffer rod 708 to reset, ensuring that the buffer device 7 can cope with the next impact at any time and maintain continuous protection capability.

[0023] Working principle: Before using this portable air particulate matter detector, the device is assembled and prepared for testing. The sensor module assembly is placed into the mounting cavity 607 of the waterproof device 6. The silicone gasket 608 in the mounting cavity 607 is used to initially position and buffer the sensor module assembly. Then, the front cover 601 and the rear cover 603 are connected, so that the sealing gasket 604 is embedded in the sealing groove 602 to form the first waterproof barrier. Then, the fixing screw is inserted through the coaxial mounting hole of the ear plate 605, and the waterproof gasket 606 is squeezed to form the second waterproof barrier, completing the waterproof encapsulation of the sensor module assembly. The buffer device 7 on the outer wall of the front cover 601 and the rear cover 603 is securely connected to the waterproof device 6 through components such as reinforcing rib 701 and semi-circular connecting seat 702, preparing for subsequent impact protection. During testing, the crank assembly 2 on the surface of the testing device 1 is rotated, and the crank assembly 2 drives the connecting wire 5 to extend outward. The waterproof device 6 at the top of the connecting wire 5 extends to the area to be tested along with the wire. If the waterproof device 6 accidentally collides with the equipment in the well during the process, the buffer device 7 will be activated immediately. The external force first acts on the buffer washer 710, pushing the buffer rod 708 and the buffer spring 709, causing the damping block 705 to move along the damping groove. 704 slides and absorbs impact energy through the deformation of the buffer spring 709. The guide block 706 cooperates with the guide groove 707 to ensure the stability of the buffer structure. The reinforcing rib 701 disperses residual impact force to prevent damage to the waterproof device 6 and internal sensors. At the same time, the sealing structure of the waterproof device 6 can resist the high humidity and dust environment underground, preventing water vapor and dust from entering the installation cavity 607 and affecting the operation of the sensor. When the sensor module group reaches the detection position, the sensor module group begins to collect environmental data such as air particles. The data is transmitted to the processing module inside the detection device 1 through the connecting wire 5. After processing, the data is displayed in the detection device. The display screen of device 1 shows the test results. If the test position needs to be adjusted, the crank assembly 2 is turned in the opposite direction to retract the connecting wire 5. The waterproof device 6 is reset with the wire. The buffer device 7 and the waterproof device 6 continue to provide protection. After the test is completed, the crank assembly 2 is turned to retract the connecting wire 5, and the waterproof device 6 is clamped and fixed by the clamping assembly 4, thus completing the entire test process. During this process, the synergistic effect of the waterproof device 6 and the buffer device 7 ensures the stable operation of the sensor module group in the complex environment and ensures that the test data is accurate and reliable. This completes the use of a portable air particulate matter detection device.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable airborne particulate matter detection device, comprising a detection device (1), characterized in that: The surface of the detection device (1) is equipped with a crank assembly (2), the top end of the detection device (1) is connected to a connecting tube (3), the top end of the connecting tube (3) is equipped with a clamping assembly (4), the surface of the crank assembly (2) is connected to a connecting wire (5), the top end of the connecting wire (5) is provided with a waterproof device (6), and the surface of the waterproof device (6) is provided with a buffer device (7). The waterproof device (6) includes a front cover (601), which is connected above the connecting wire (5). A sealing groove (602) is provided on the inner side of the front cover (601). A rear cover (603) is connected to the surface of the front cover (601). A sealing gasket (604) is connected to the inner side of the rear cover (603). Ear plates (605) are connected to the sides of both the front cover (601) and the rear cover (603). A waterproof rubber gasket (606) is connected to the outside of the mounting hole on the surface of the ear plate (605). An installation cavity (607) is provided inside the front cover (601) and the rear cover (603). A silicone gasket (608) is laid inside the installation cavity (607). A buffer device (7) is provided on the outside of both the front cover (601) and the rear cover (603).

2. The portable airborne particulate matter detection device according to claim 1, characterized in that: The sealing gasket (604) and the sealing groove (602) are in a corresponding and compatible structure, and the sealing gasket (604) is embedded in the sealing groove (602) and fits tightly against the inner wall of the sealing groove (602).

3. The portable airborne particulate matter detection device according to claim 1, characterized in that: The ear plates (605) on the sides of the front cover (601) and the rear cover (603) are symmetrically distributed, and the ear plates (605) of the front cover (601) and the ear plates (605) of the rear cover (603) are fitted one-to-one. The mounting holes on the surface of the ear plates (605) are coaxially arranged, and the waterproof gasket (606) covers the entire opening end of the mounting hole.

4. The portable airborne particulate matter detection device according to claim 1, characterized in that: The buffer device (7) includes a reinforcing rib (701), which is fixedly connected to the outer wall of the front cover (601) and the rear cover (603). The outer end of the reinforcing rib (701) is connected to a semi-annular connecting seat (702). A fixing rod (703) is connected above the semi-annular connecting seat (702). A damping groove (704) is provided inside the fixing rod (703). A damping block is slidably connected to the inner wall of the damping groove (704). (705), a guide block (706) is connected to the side of the damping block (705), a guide groove (707) is opened on the inner side of the damping groove (704), a buffer rod (708) is connected to the outer end of the fixed rod (703) above the damping block (705), a buffer spring (709) is connected to the outer side of the buffer rod (708), and a buffer washer (710) is connected to the top of both the buffer rod (708) and the buffer spring (709).

5. A portable airborne particulate matter detection device according to claim 4, characterized in that: The reinforcing ribs (701) are symmetrically distributed along the outer walls of the front cover (601) and the rear cover (603), and each set of reinforcing ribs (701) is connected to a set of semi-circular connecting seats (702).

6. A portable airborne particulate matter detection device according to claim 4, characterized in that: The guide block (706) and the guide groove (707) are in a corresponding and compatible structure, and the guide block (706) is embedded in the guide groove (707) and slides against the inner wall of the guide groove (707).

7. A portable airborne particulate matter detection device according to claim 4, characterized in that: The buffer spring (709) is sleeved on the outside of the buffer rod (708), and the two ends of the buffer spring (709) are in close contact with the top of the damping block (705) and the inner wall of the top of the fixing rod (703), respectively.

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