A high-precision dust concentration detector with automatic compensation function

Abstract

The present invention discloses a high-precision dust concentration detector with automatic compensation function, which relates to the technical field of dust concentration detection, including a shell, a partition, an air pump, a pipeline and a cover plate. Two pipelines are arranged inside the shell, and a transmission component is arranged between the pipelines. A partition slide is arranged in the middle of the bottom plate, and a partition slide is fixedly connected to the middle of the partition slide. The present invention cooperates with the transmission component to detect the elements inside the device. With the continuous movement of the partition, the detection and calculation structure inside the device works multiple times, and the average value is calculated to obtain the specific value of dust inside the environment. The partition component cooperates with the air pump and the fan to clean the detection air cavity. The opening and closing component makes the air entering the air pump must pass through the pipeline at the front end of the shell. The pipeline is provided with multiple groups of filter screens to realize that the airflow is filtered by the filter screen while passing through the pipeline, and then the filtered airflow cleans the air cavity on the right side of the partition.

Description

Technical Field

[0001] The invention relates to the technical field of dust concentration detection, in particular to a high-precision dust concentration detector with an automatic compensation function. Background Art

[0002] Dust concentration is the dust content per unit volume of air. There are two ways to express it: one is mass concentration, which is the number of milligrams of dust per cubic meter of air. The other is particle concentration, which is the number of dust particles per cubic meter of air. The former is used in industrial ventilation technology, and the latter is used in air purification technology. The dust concentration of combustible dust is closely related to its explosiveness.

[0003] When detecting dust concentration, since general detectors do not have the function of automatic laser compensation, as the laser continues to penetrate the dust, the intensity decays and the laser cannot continue to penetrate the air with high dust concentration, resulting in the inability to effectively measure the dust concentration. This causes a large detection error in the detector, which affects the use limitations of the device. Summary of the invention

[0004] The object of the present invention is to provide a high-precision dust concentration detector with an automatic compensation function to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-precision dust concentration detector with automatic compensation function, comprising a shell, a partition, an air pump, a pipeline and a cover plate, an air pump is fixed at the lower end of the shell, and the front and rear ends of the air pump are respectively connected with a collecting port and a pipeline, and the collecting port is located at the rear of the pipeline, and two pipelines are arranged inside the shell, and a one-way valve is arranged at the upper end of the pipeline at the rear end of the shell, and a transmission component is arranged between the pipelines, and the transmission component plays a role in pushing the partition to move horizontally, a bottom plate is arranged above the transmission component, a partition slide rail is arranged in the middle of the bottom plate, and a partition is fixedly connected to the middle of the partition slide rail, and a partition component is arranged on the right side of the partition, and the partition component plays a role in detecting the dust concentration inside the space on the right side of the partition, and the right side of the partition component is movably connected to the opening and closing component, and the opening and closing component plays a role in cooperating with the transmission component to open the cover plate, and a fan is arranged on one side of the cover plate, and the fan plays a role in driving the dust movement inside the air cavity on the right side of the partition.

[0006] Furthermore, the transmission component includes a power assembly installed inside the shell, an electric motor is arranged inside the power assembly, the output shaft of the electric motor is fixedly connected to a screw rod through a coupling, a transmission assembly is arranged above the screw rod, and the power assembly serves to provide power for the transmission assembly.

[0007] Furthermore, the transmission assembly includes a limit plate installed at the lower end of the partition, the inner wall of the limit plate is provided with a groove, the middle part of the limit plate is slidably connected with a slide plate, a longitudinally telescopic spring is arranged inside the slide plate, and the front and rear ends of the spring are provided with protrusions matching the groove of the inner wall of the limit plate, a telescopic rod is arranged at the lower end of the slide plate, a vertically telescopic spring is arranged inside the telescopic rod, a cylinder is arranged inside the telescopic rod, and the lower end of the telescopic rod is meshed with a screw rod, limiting assemblies are arranged on the left and right sides of the transmission assembly, and an offset assembly is arranged below the transmission assembly, and the transmission assembly plays a role in driving the partition to move synchronously.

[0008] Furthermore, the limiting assembly includes wedge plates on the left and right sides of the transmission assembly, and a clamping plate is arranged above the right wedge plate inside the shell. A transverse through hole is opened inside the limiting plate, and the clamping plate plays the role of compressing the spring by contacting with the internal protrusion of the limiting plate.

[0009] Furthermore, the offset assembly includes a vertical plate installed below the front and rear ends of the transmission assembly, the interior of the vertical plate is slidably connected with a movable sleeve rod, the interior of the movable sleeve rod is provided with a spring, the upper part of the movable sleeve rod is movably connected with a triangular plate, the upper end surface of the triangular plate is in contact with the lower end surface of the partition, and the offset assembly serves to drive the partition to deflect over a short distance.

[0010] Furthermore, the partition component includes a detection component installed on the upper part of the interior of the shell, a movable plate is movably connected to the upper part of the interior of the shell, a detection element is arranged inside the movable plate, a transparent plate is arranged in front of the detection element, the detection element serves as a dust concentration inside the air cavity on the right side of the partition, and the bottom of the movable plate is connected to the connecting component.

[0011] Furthermore, the connecting component includes a flat plate installed above the partition, the upper end surface of the flat plate is in contact with the lower end surface of the movable plate, a fixing rod is provided on the right side of the partition, a card plate is provided on the inner right side of the shell, the card plate is connected to the shell through an internal spring, the card plate fixes the shell and the cover plate, the shell and the cover plate are movably connected through a spring shaft, and the connecting component serves to open the cover plate.

[0012] Furthermore, the opening and closing component includes a driving component installed on one side of the cover plate, a column is fixedly connected to the right side of the cover plate, the outer wall of the lower end of the column is fitted with a limiting slot plate, an inclined sliding slot is opened inside the limiting slot plate, and an on-off component is arranged on one side of the limiting slot plate, and the driving component plays a role in pushing the on-off component.

[0013] Furthermore, the on-off assembly includes a connecting plate installed on the lower right side of the shell, a slide groove is provided inside the shell for the connecting plate to slide longitudinally, a blocking plate is fixedly connected to the left side of the connecting plate, a horizontal opening is provided on the upper right side of the pipeline, and the left side of the blocking plate matches the horizontal opening on the right side of the pipeline. The on-off assembly plays a role in controlling the on-off of the pipelines at both ends.

[0014] Furthermore, the pipes are provided in two groups, and the two groups of pipes are arranged horizontally and longitudinally at the lower part of the inner part of the outer shell. A plurality of filters are arranged inside the pipes in front of the lower end of the bottom plate, and the filters are arranged obliquely. The filters serve to filter the dust passing through the pipes, and the pipes on the front side of the inner part of the outer shell serve to connect the air cavities on the left and right sides of the partition.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. Through the setting of the transmission components inside the device, the transmission components are composed of a power component, a transmission component, a limiting component and an offset component, wherein the transmission component provides the partition with power for horizontal movement through the transmission component, so that the dust concentration inside the air cavity on the right side of the partition is continuously diluted to compensate for the weakening of the laser due to the dust concentration, and indirectly compensate the laser. As the distance between the dust inside the air cavity continues to increase, the laser can penetrate the air when the device detects the dust concentration inside the air cavity, so as to reduce the weakening of the laser caused by the dust during the penetration process. At the same time, the detection element performs real-time detection of the inside of the air cavity. When the specific value of the dust inside the air cavity is detected, the value is recorded while recording the value of the distance detection element inside the partition slide rail. The two values ​​are calculated by the calculation element inside the device to obtain the specific concentration inside the environmental space. Then, with the continuous movement of the partition, the detection and calculation structure inside the device works multiple times to calculate the average value to obtain the specific value of the dust inside the environment.

[0017] 2. Through the setting of the partition component inside the device, the partition component is composed of a detection component and a connection component, wherein the detection component mainly cooperates with other components inside the device to detect the dust concentration inside the air cavity, and the main function of the connection component is that after the device is completed, the air pressure on the left and right sides of the partition is unbalanced due to the transmission component, resulting in the air pressure driving the partition to move, and the inertia of the partition is used to contact the opening and closing component on the right side, open the cover on the right side of the partition, so that the dust inside the partition can leave, and cooperate with the air pump and fan to clean the detection air cavity, and at the same time, the detection element has been stored in the shell under the action of the flat plate, so as to facilitate the next use;

[0018] 3. Through the setting of the opening and closing components inside the device, the opening and closing components are composed of a driving component and an on-off component. After the driving component makes the cover plate lose the restriction of the card plate, the power generated by the spring shaft is released through the column, and then transmitted through the limit slot plate, finally realizing the horizontal and longitudinal movement of the connecting plate and the blocking plate. After the movement, the blocking plate is connected with the two pipes inside the shell in different ways respectively. The pipe near the rear end of the shell forms a circuit break under the action of the blocking plate, and the pipe near the front end of the shell forms a passage under the action of the blocking plate. In this way, the air entering through the air pump must pass through the pipe at the front end of the shell. Multiple groups of filters are arranged inside the pipe to realize that the airflow is filtered by the filter while passing through the pipe, and then the filtered airflow cleans the air cavity on the right side of the partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention from top view;

[0021] Figure 2 It is a schematic diagram of the pipeline structure viewed from above of the present invention;

[0022] Figure 3 It is a schematic diagram of the main structure of the transmission component of the present invention;

[0023] Figure 4 It is a schematic diagram of the full cross-section structure of the present invention from the left side;

[0024] Figure 5 This is a schematic diagram of the full cross-sectional structure of the limiting plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the main structure of the detection component of the present invention;

[0026] Figure 7 It is a schematic diagram of the full cross-section structure of the offset assembly of the present invention;

[0027] Figure 8 The present invention Figure 1 The enlarged structural diagram at A in the middle;

[0028] Fig. 9 It is a schematic diagram of the top view of the switch assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the front end pipeline in the shell of the present invention.

[0030] In the figure: 1. transmission component; 11. power component; 111. screw rod; 12. transmission component; 121. limit plate; 122. telescopic rod; 123. cylinder; 13. limit component; 131. wedge plate; 132. clamp; 14. offset component; 141. vertical plate; 142. movable sleeve rod; 143. triangle plate; 2. partition; 3. partition component; 31. detection component; 311. movable plate; 32. connecting component; 321. flat plate; 322. fixing rod; 323. card plate; 4. opening and closing component; 41. driving component; 411. column; 412. limit slot plate; 42. on-off component; 421. connecting plate; 422. blocking plate; 5. bottom plate; 6. partition slide rail; 7. pipeline; 8. shell; 9. cover plate. DETAILED DESCRIPTION

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

[0032] See also Figure 1-Figure 10 The present invention provides a technical solution: a high-precision dust concentration detector with automatic compensation function, comprising a shell 8, a partition 2, an air pump, a pipe 7 and a cover plate 9. An air pump is fixed at the lower end of the shell 8. The front and rear ends of the air pump are respectively connected with a collecting port and a pipe 7. The collecting port is located behind the pipe 7. Two pipes 7 are arranged inside the shell 8. A one-way valve is arranged at the upper end of the pipe 7 at the rear end of the shell 8. A transmission component 1 is arranged between the pipes 7. The transmission component 1 plays a role in pushing the partition 2 to move horizontally. A bottom plate 5 is arranged above the transmission component 1. A partition slide rail 6 is arranged in the middle of the bottom plate 5. The middle part of the partition slide rail 6 is fixedly connected with the partition 2. A partition component 3 is arranged on the right side of the partition 2. The partition component 3 plays a role in detecting the dust concentration inside the space on the right side of the partition 2. The right side of the partition component 3 is movably connected to the opening and closing component 4. The opening and closing component 4 plays a role in cooperating with the transmission component 1 to open the cover plate 9.

[0033] The transmission component 1 includes a power assembly 11 installed inside the housing 8, an electric motor is arranged inside the power assembly 11, the output shaft of the electric motor is fixedly connected to a screw rod 111 through a coupling, a transmission assembly 12 is arranged above the screw rod 111, and the power assembly 11 plays the role of providing power for the transmission assembly 12;

[0034] The transmission assembly 12 includes a limit plate 121 installed at the lower end of the partition 2, the inner wall of the limit plate 121 is provided with a groove, the middle part of the limit plate 121 is slidably connected with a slide plate, a longitudinally telescopic spring is arranged inside the slide plate, and the front and rear ends of the spring are provided with protrusions matching the groove of the inner wall of the limit plate 121, and a telescopic rod 122 is arranged at the lower end of the slide plate, and a vertically telescopic spring is arranged inside the telescopic rod 122, and a cylinder 123 is arranged inside the telescopic rod 122, and the lower end of the telescopic rod 122 is meshed with the screw rod 111, and the left and right sides of the transmission assembly 12 are provided with a limit assembly 13, and an offset assembly 14 is arranged below the transmission assembly 12, and the transmission assembly 12 plays a role in driving the partition 2 to move synchronously;

[0035] The limiting assembly 13 includes wedge plates 131 on the left and right sides of the transmission assembly 12. A clamping plate 132 is arranged above the right wedge plate 131 inside the housing 8. A transverse through hole is opened inside the limiting plate 121. The clamping plate 132 plays a role of compressing the spring by contacting with the internal protrusion of the limiting plate 121.

[0036] The offset assembly 14 includes a vertical plate 141 installed below the front and rear ends of the transmission assembly 12, a movable sleeve rod 142 is slidably connected inside the vertical plate 141, a spring is arranged inside the movable sleeve rod 142, a triangular plate 143 is movably connected above the movable sleeve rod 142, and the upper end surface of the triangular plate 143 is in contact with the lower end surface of the partition 2, and the offset assembly 14 plays a role in driving the partition 2 to deflect over a short distance;

[0037] The transmission component 1 is set up, and the transmission component 1 is composed of a power component 11, a transmission component 12, a limiting component 13 and an offset component 14, wherein the transmission component 1 provides horizontal movement power for the partition 2 through the transmission component 12, so that the dust concentration inside the air cavity on the right side of the partition 2 is continuously diluted to compensate for the weakening of the laser due to the dust concentration, and indirectly compensate the laser. As the distance between the dust inside the air cavity continues to increase, it is convenient for the device to detect the dust concentration inside the air cavity. The laser can penetrate the air to reduce the weakening of the laser caused by the dust during the penetration process. At the same time, the detection element performs real-time detection of the inside of the air cavity. When the specific value of the dust inside the air cavity is detected, the value is recorded while recording the value of the distance detection element inside the partition slide rail 6. The two values ​​are calculated by the calculation element inside the device to obtain the specific concentration inside the environmental space. Subsequently, with the continuous movement of the partition 2, the internal detection and calculation structure of the device works multiple times to calculate the average value to obtain the specific value of the dust inside the environment.

[0038] The partition component 3 includes a detection assembly 31 installed on the upper part of the housing 8, a movable plate 311 is movably connected to the upper part of the housing 8, a detection element is arranged inside the movable plate 311, a transparent plate is arranged in front of the detection element, and the detection element plays the role of detecting the dust concentration inside the air cavity on the right side of the partition 2, and the lower part of the movable plate 311 is connected to the connection assembly 32;

[0039] The connecting assembly 32 includes a flat plate 321 installed above the partition 2, the upper end surface of the flat plate 321 is in contact with the lower end surface of the movable plate 311, a fixing rod 322 is provided on the right side of the partition 2, a clamping plate 323 is provided on the right side of the inner side of the shell 8, the clamping plate 323 is connected to the shell 8 through an internal spring, the clamping plate 323 fixes the shell 8 and the cover plate 9, the shell 8 and the cover plate 9 are movably connected through a spring shaft, and the connecting assembly 32 plays a role in opening the cover plate 9;

[0040] The partition component 3 is provided, and the partition component 3 is composed of a detection component 31 and a connection component 32, wherein the detection component 31 mainly cooperates with other components inside the device to detect the dust concentration inside the air cavity, and the main function of the connection component 32 is that after the device completes the detection, the air pressure imbalance at the left and right ends of the partition 2 caused by the transmission component 1 causes the air pressure to drive the partition 2 to move, and the inertia of the partition 2 is used to contact the opening and closing component 4 on the right side of the device, opening the space on the right side of the partition 2 to allow the dust inside to leave, and cooperating with the air pump and the fan to clean the detection air cavity, and at the same time, the detection element has been stored in the shell 8 under the action of the flat plate 321 for the next use.

[0041] The opening and closing component 4 includes a driving component 41 installed on one side of the cover plate 9, a column 411 is fixedly connected to the right side of the cover plate 9, the lower end outer wall of the column 411 is fitted with a limiting slot plate 412, an inclined sliding slot is provided inside the limiting slot plate 412, and a switching component 42 is provided on one side of the limiting slot plate 412, and the driving component 41 plays a role in pushing the switching component 42;

[0042] The on-off assembly 42 includes a connecting plate 421 installed on the lower right side of the housing 8. A slide groove is provided inside the housing 8 for the connecting plate 421 to slide longitudinally. A blocking plate 422 is fixedly connected to the left side of the connecting plate 421. A horizontal opening is provided on the upper right side of the pipe 7. The left side of the blocking plate 422 matches the horizontal opening on the right side of the pipe 7. The on-off assembly 42 plays a role in controlling the on-off of the pipes 7 at both ends.

[0043] Two groups of pipes 7 are provided, and the two groups of pipes 7 are arranged horizontally and longitudinally at the lower part of the housing 8. A plurality of filter screens are arranged inside the pipes 7 in front of the lower end of the bottom plate 5, and the filter screens are arranged obliquely. The filter screens play a role in filtering dust passing through the pipes 7. The pipes 7 on the front side of the housing 8 play a role in connecting the air cavities on the left and right sides of the partition 2.

[0044] A fan is provided on one side of the cover plate 9, and the fan plays a role in driving the dust inside the air cavity on the right side of the partition plate 2 to move;

[0045] The opening and closing component 4 is arranged, and the opening and closing component 4 is composed of a driving component 41 and an on-off component 42. After the driving component 41 makes the cover plate 9 lose the restriction of the clamping plate 323, the power generated by the spring shaft is released through the column 411, and then transmitted through the limiting slot plate 412, finally realizing the horizontal and longitudinal movement of the connecting plate 421 and the blocking plate 422. After the movement, the blocking plate 422 is respectively connected to the two pipes 7 inside the outer shell 8 in different ways. The pipe 7 near the rear end of the outer shell 8 forms a circuit break under the action of the blocking plate 422, and the pipe 7 near the front end of the outer shell 8 forms a passage under the action of the blocking plate 422, so that the air entering through the air pump must pass through the pipe 7 at the front end of the inner shell 8. Multiple groups of filters are arranged inside the pipe 7 to ensure that the space inside the air cavity on the right is clean.

[0046] The working principle of the present invention is as follows: the air pump inside the device is started, and the air pump passes the dusty air into the air cavities on the left and right sides of the partition 2 through the collection port at the rear end and the pipe 7 connected to the front end until the air cavities are filled with air, and then the motor inside the device drives the screw rod 111 to rotate, and the screw rod 111 drives the telescopic rod 122 to move horizontally. The telescopic rod 122 moves horizontally to the left under the push of the spiral groove on the outer wall of the screw rod 111, and the upper part of the telescopic rod 122 is movably connected to the partition 2 through the limit plate 121 and the partition slide rail 6. A distance detection element is provided inside the partition slide rail 6. At the same time, the partition slide rail 6 blocks the air flow between the upper and lower spaces of the bottom plate 5, so that the upper part of the bottom plate 5 is in a sealed state;

[0047] The partition 2 moves synchronously until the partition 2 and the upper flat plate 321 leave the deflection area of ​​the movable plate 311. Under the action of gravity, the movable plate 311 deflects through the rotating shaft between the movable plate 311 and the shell 8. A brush is provided between the contact surface of the movable plate 311 and the shell 8. When there is relative movement between the movable plate 311 and the shell 8, the brush can clean the outer wall of the movable plate 311. The internal detection element of the movable plate 311 enters the air cavity on the right side of the partition 2 to detect the dust concentration inside the air cavity. During the detection, the screw rod continues to move and the fan on one side of the cover plate 9 drives the air inside the air cavity to move. The air enters the rotating area of ​​the fan blades from all around the fan, and is then pushed out by the fan blades. The volume of the air cavity on the left side of the partition 2 continues to increase to form a relatively low-pressure space. The dust inside the air cavity changes from a dense state to a scattered state. The detection element continuously checks it until the internal system of the device determines the dust concentration through the real-time detection data of the detection element.

[0048] The screw rod 111 drives the telescopic rod 122 to continuously move to the left until the limit plate 121 on the outer wall of the upper end of the telescopic rod 122 contacts the wedge plate 131 on the left side of the lower end of the housing 8. The wedge-shaped structure of the outer wall of the wedge plate 131 drives the telescopic rod 122 to move upward as a whole by pushing the cylinder 123. The lower end of the telescopic rod 122 is disconnected from the screw rod 111. The internal spring at the upper end of the telescopic rod 122 drives the protrusions at the front and rear ends to engage with the grooves inside the limit plate 121.

[0049] Two groups of air cavities are arranged at the upper end of the partition 2. When the device moves, it continuously compresses the air cavity on the left side of the partition 2, so that the inside of the air cavity on the left side is in a high-pressure state, and the air cavity on the right side of the partition 2 is in a low-pressure state. The transmission component 12 at the lower end of the partition 2 is disconnected from the power component 11, and the partition 2 moves to the right under the action of the pressure difference on both sides. When the partition 2 moves to the right, the partition 2 and the flat plate 321 on the upper left side push the movable plate 311 to reset, and the lower end surface of the movable plate 311 after reset is aligned with the lower end of the inner part of the shell 8. The surfaces overlap, and the movable plate 311 fits the upper end surface of the flat plate 321. When the partition 2 moves to the rightmost side under the joint action of the air pressure and the offset assembly 14, the fixing rod 322 on the right side of the partition 2 contacts the card plate 323 on the right side of the shell 8. The left side of the card plate 323 is a wedge-shaped structure. The card plate 323 moves under the action of the pressure, and at the same time, the restriction of the card plate 323 on the cover plate 9 is released. At this time, the cover plate 9 forms an open state with the right outer wall of the shell 8 under the action of the right spring shaft;

[0050] The partition 2 moves rapidly to the right under the air pressure. In the later stage of the movement, the pressure difference between the left and right sides of the partition 2 disappears. The partition 2 will continue to move a short distance under the action of inertia. There are protruding parts at the front and rear ends of the bottom of the partition 2. The bottom of the partition 2 contacts the side plate of the upper end of the triangular plate 143 close to the cover plate 9. The triangular plate 143 and the movable sleeve rod 142 are movably connected through the rotating shaft, which drives the triangular plate 143 to deflect with the axis of the rotating shaft as the center of the circle. The partition 2 moves to the right, compressing the movable sleeve rod 142 below the rotating shaft. The movable sleeve rod 142 is provided with a vertical The spring is straight and retractable, and the partition 2 passes over the center line of the rotating shaft at the lower end of the triangular plate 143, and the movable sleeve rod 142 below the rotating shaft extends. At this time, the side plate on the right side of the triangular plate 143, that is, the side plate close to the cover plate 9, is provided with a magnet below the right side of the side plate. Under the action of the magnetic field, the magnet pulls the right side plate to continue to deflect. At this time, the partition 2 is located between the side plates of the triangular plate 143. Under the joint action of the triangular plate 143, the magnet and the movable sleeve rod 142, the partition 2 resists the air pressure difference inside the air cavities on both sides of the partition 2. At this time, the partition 2 moves to the rightmost side inside the device;

[0051] The limit plate 121 at the lower end of the partition 2 first contacts the right clamping plate 132 at the lower end of the shell 8. The clamping plate 132 squeezes the protrusions at the front and rear ends of the spring inside the telescopic rod 122, so that the protrusions gather together, and the upper end of the telescopic rod 122 is disconnected from the limit plate 121. Then, under the action of the wedge plate 131 on the right side of the shell 8, the wedge plate 131 contacts the cylinder 123 inside the telescopic rod 122, driving the telescopic rod 122 to descend and re-engage with the lead screw 111. A vertically retractable spring is provided inside the telescopic rod 122. During the process of the telescopic rod 122 descending, after contacting the protruding part of the lead screw 111, the motor can drive the lead screw 111 to rotate during the next operation of the device until the lower end of the telescopic rod 122 is re-engaged with the groove part of the lead screw 111.

[0052] After the partition 2 opens the cover plate 9 through the clamping plate 323, a column 411 is provided on the right side of the cover plate 9. The column 411 deflects synchronously with the cover plate 9. The lower end of the column 411 pushes the inner wall of the limiting slot plate 412, so that the limiting slot plate 412 slides longitudinally along the inner wall of the shell 8 through the connecting plate 421. The connecting plate 421 drives the blocking plate 422 to engage with the pipe 7. The pipe 7 near the rear end of the shell 8 is disconnected under the action of the blocking plate 422, and the pipe 7 near the front end of the shell 8 is closed under the action of the blocking plate 422. A passage is formed by using the air pump inside the device. At this time, the air pump inside the device is started again. The air pump continuously introduces air into the air cavity on the left side of the partition 2 through the pipe 7 at the rear end of the shell 8, and then enters the air cavity on the right side of the partition 2 through the pipe 7 at the front end of the shell 8. At the same time, multiple groups of obliquely arranged filter screens are arranged inside the pipe 7 at the front end of the shell 8. The density of the filter screens arranged from left to right is continuously increased. After being filtered, the air enters the air cavity on the right side of the partition 2. Under the action of the fan in the started state, the air cavity on the right side of the partition 2 is cleaned;

[0053] After completion, the cover plate 9 is deflected and reset to engage with the housing 8 again, so that the cover plate 9 pushes the partition plate 2 to horizontally deflect by a small distance, and the offset component 14 inside the device is reset. At this time, the cover plate 9 and the housing 8 are relatively fixed again under the action of the clamping plate 323;

[0054] When the device is in use, it can automatically perform intensity compensation according to the dust concentration in the air. At the same time, during subsequent detection, the device can dilute the dust concentration in the confined space so that the device can use a lower intensity laser to penetrate the dust inside the confined space.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision dust concentration detector with automatic compensation function, comprising a housing (8), a partition (2), an air pump, a pipeline (7) and a cover plate (9), characterized in that: An air pump is fixed at the lower end of the shell (8), and the front and rear ends of the air pump are respectively connected to a collection port and a pipeline (7), and the collection port is located behind the pipeline (7). Two pipelines (7) are arranged inside the shell (8), and a one-way valve is arranged at the upper end of the rear end pipeline (7) inside the shell (8). A transmission component (1) is arranged between the pipelines (7), and the transmission component (1) plays a role in pushing the partition (2) to move horizontally. A bottom plate (5) is arranged above the transmission component (1), and a bottom plate (5) is arranged in the middle of the bottom plate (5). A partition slide rail (6) is provided, a partition plate (2) is fixedly connected to the middle of the partition slide rail (6), a partition component (3) is arranged on the right side of the partition plate (2), the partition component (3) plays a role in detecting the dust concentration inside the space on the right side of the partition plate (2), the right side of the partition component (3) is movably connected to an opening and closing component (4), the opening and closing component (4) plays a role in cooperating with a transmission component (1) to open a cover plate (9), a fan is arranged on one side of the cover plate (9), the fan plays a role in driving the dust inside the air cavity on the right side of the partition plate (2) to move; The partition component (3) comprises a detection component (31) and a connection component (32), wherein the connection component (32) serves to open the cover plate (9), and the opening and closing component (4) comprises a driving component (41) and an on-off component (42); The on-off assembly (42) comprises a connecting plate (421) installed on the right side of the lower part of the housing (8); a slide groove for the connecting plate (421) to slide longitudinally is provided inside the housing (8); a blocking plate (422) is fixedly connected to the left side of the connecting plate (421); a horizontal opening is provided on the upper right side of the pipeline (7); the left side of the blocking plate (422) matches the horizontal opening on the right side of the pipeline (7); and the on-off assembly (42) plays a role in controlling the on-off of the pipelines (7) at both ends; Before the cover plate (9) is opened, the pipe (7) near the rear end of the housing (8) forms a passage under the action of the blocking plate (422), and the pipe (7) near the front end of the housing (8) forms a circuit break under the action of the blocking plate (422); After the cover plate (9) is opened, the pipe (7) near the rear end of the housing (8) is disconnected by the blocking plate (422), and the pipe (7) near the front end of the housing (8) is opened by the blocking plate (422).

2. The high-precision dust concentration detector with automatic compensation function according to claim 1 is characterized in that: The transmission component (1) comprises a power assembly (11) installed inside the housing (8), an electric motor is arranged inside the power assembly (11), an output shaft of the electric motor is fixedly connected to a screw rod (111) via a coupling, a transmission assembly (12) is arranged above the screw rod (111), and the power assembly (11) serves to provide power for the transmission assembly (12).

3. The high-precision dust concentration detector with automatic compensation function according to claim 2 is characterized in that: The transmission assembly (12) comprises a limit plate (121) mounted at the lower end of the partition (2), the inner wall of the limit plate (121) being provided with a groove, the middle part of the limit plate (121) being slidably connected with a slide plate, the interior of the slide plate being provided with a longitudinally retractable spring, the front and rear ends of the spring being provided with protrusions matching the groove of the inner wall of the limit plate (121), the lower end of the slide plate being provided with a telescopic rod (122), the interior of the telescopic rod (122) being provided with a vertically retractable spring, the interior of the telescopic rod (122) being provided with a cylinder (123), the lower end of the telescopic rod (122) being meshed with the screw rod (111), the left and right sides of the transmission assembly (12) being provided with a limit assembly (13), the lower part of the transmission assembly (12) being provided with an offset assembly (14), and the transmission assembly (12) serving to drive the partition (2) to move synchronously.

4. The high-precision dust concentration detector with automatic compensation function according to claim 3 is characterized in that: The limiting assembly (13) comprises wedge plates (131) on the left and right sides of the transmission assembly (12); a clamping plate (132) is arranged above the right wedge plate (131) inside the housing (8); a transverse through hole is opened inside the limiting plate (121); the clamping plate (132) plays a role of compressing the spring by contacting with the internal protrusion of the limiting plate (121).

5. The high-precision dust concentration detector with automatic compensation function according to claim 3 is characterized in that: The offset assembly (14) comprises a vertical plate (141) installed below the front and rear ends of the transmission assembly (12); a movable sleeve rod (142) is slidably connected inside the vertical plate (141); a spring is arranged inside the movable sleeve rod (142); a triangular plate (143) is movably connected above the movable sleeve rod (142); the upper end surface of the triangular plate (143) is in contact with the lower end surface of the partition (2); and the offset assembly (14) plays a role in driving the partition (2) to deflect over a short distance.

6. The high-precision dust concentration detector with automatic compensation function according to claim 1 is characterized in that: The partition component (3) comprises a detection assembly (31) mounted on the upper part of the interior of the outer shell (8); a movable plate (311) is movably connected to the upper part of the interior of the outer shell (8); a detection element is arranged inside the movable plate (311); a transparent plate is arranged in front of the detection element; the detection element serves to detect the dust concentration inside the air cavity on the right side of the partition (2); and the lower part of the movable plate (311) is connected to the connection assembly (32).

7. The high-precision dust concentration detector with automatic compensation function according to claim 6, characterized in that: The connecting assembly (32) comprises a flat plate (321) installed above the partition (2), the upper end surface of the flat plate (321) is in contact with the lower end surface of the movable plate (311), a fixing rod (322) is arranged on the right side of the partition (2), a clamping plate (323) is arranged on the right side of the inner part of the outer shell (8), the clamping plate (323) is connected to the outer shell (8) via an internal spring, the clamping plate (323) fixes the outer shell (8) and the cover plate (9), the outer shell (8) and the cover plate (9) are movably connected via a spring shaft, and the connecting assembly (32) serves to open the cover plate (9).

8. The high-precision dust concentration detector with automatic compensation function according to claim 1 is characterized in that: The opening and closing component (4) comprises a driving component (41) installed on one side of the cover plate (9); a column (411) is fixedly connected to the right side of the cover plate (9); a limit slot plate (412) is fitted on the outer wall of the lower end of the column (411); an inclined sliding slot is provided inside the limit slot plate (412); a switch component (42) is provided on one side of the limit slot plate (412); and the driving component (41) plays a role in pushing the switch component (42).

9. The high-precision dust concentration detector with automatic compensation function according to claim 1, characterized in that: The pipes (7) are provided in two groups. The two groups of pipes (7) are arranged horizontally and longitudinally at the lower part of the housing (8). A plurality of filter screens are provided inside the pipes (7) in front of the lower end of the bottom plate (5). The filter screens are arranged obliquely. The filter screens play a role in filtering dust passing through the pipes (7). The pipes (7) on the front side of the housing (8) play a role in connecting the air cavities on the left and right sides of the partition (2).

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