β-ray particulate matter monitoring equipment

Abstract

The present invention discloses a particulate matter monitoring device using beta rays, which includes a monitoring device body. The monitoring device body includes a diaphragm extending mechanism for diaphragm calibration. The diaphragm extending mechanism includes a diaphragm carrier capable of reciprocating horizontally in a straight line under drive. The moving direction of the diaphragm carrier is perpendicular to the installation vertical plate of the monitoring device body. A through hole for the telescopic movement of the diaphragm carrier is formed on the installation vertical plate. The diaphragm extending mechanism is located on the rear side surface of the installation vertical plate, and the detector module is located on the front side surface of the installation vertical plate. The diaphragm carrier can be driven to move back and forth through the through hole, and after extending forward, it is located above the paper tape. The present invention can automatically control the extension of the diaphragm for calibration operation, greatly saving the manual workload and realizing the automated diaphragm calibration operation.

Description

Technical Field

[0001] The present invention relates to the technical field of particulate matter monitoring, and particularly to a particulate matter monitoring device using the beta-ray method. Background Art

[0002] For a particulate matter monitoring device using the beta-ray method for detecting particulate matter in a gas, during use, if the monitored data is inaccurate, a calibration diaphragm needs to be used for calibration. In the prior art, diaphragm calibration is usually completed manually, which requires manual calibration and is prone to errors. Summary of the Invention

[0003] The purpose of the present invention is to provide a particulate matter monitoring device using the beta-ray method in view of the technical defects existing in the prior art.

[0004] The technical solution adopted to achieve the purpose of the present invention is as follows:

[0005] A particulate matter monitoring device using the beta-ray method includes a monitoring device body. The monitoring device body includes a detector module, a paper tape wound around a paper tape wheel for monitoring, and a pressing head module slidably connected to the detector module. The monitoring device body includes a diaphragm extending mechanism for diaphragm calibration. The diaphragm extending mechanism includes a diaphragm carrier capable of horizontally linearly reciprocating under drive. The moving direction of the diaphragm carrier is perpendicular to the installation vertical plate of the monitoring device body. A through hole for the telescopic movement of the diaphragm carrier is formed on the installation vertical plate. The diaphragm extending mechanism is located on the rear side of the installation vertical plate, and the detector module is located on the front side of the installation vertical plate. The diaphragm carrier can move back and forth through the through hole under drive and is located above the paper tape after extending forward.

[0006] Wherein, the diaphragm carrier is installed on a slider, and the slider is slidably matched with a linear guide rail. The linear module formed by the linear guide rail and the slider is vertically installed on the back side of the installation vertical plate.

[0007] Wherein, a vertical column arranged at the bottom of the diaphragm carrier is slidably connected to a U-shaped opening at one end of a horizontally arranged driving arm for driving the telescopic movement of the diaphragm carrier. The other end of the driving arm is hinged to a shaft member vertically arranged at the top of the motor mounting bracket of the diaphragm driving motor as its rotation center. One end of a tension spring is connected between the two ends of the driving arm. The output shaft of the diaphragm driving motor is vertically upward, and an eccentric wheel mechanism rotating horizontally is installed at the shaft end of the output shaft. The eccentric wheel mechanism cooperates with the tension spring and can swing back and forth through rotation to make the diaphragm carrier extend or retract.

[0008] Among them, the motor mounting bracket is fixed on the mounting vertical plate, and has a bottom plate and two vertical plates that are vertically connected to the bottom plate and spaced apart from each other in the thickness direction. The diaphragm driving motor is mounted on the bottom plate, and the driving arm is supported at the upper ends of the two vertical plates.

[0009] Among them, above the indenter module, there is an indenter toggle plate that can swing up and down around the rotation center. The indenter toggle plate has a U-shaped part and a rod-shaped part connected to the outer side of the middle part of the U-shaped part. The U-shaped part is used to extend from two toggle plate through holes in the upper part of the mounting vertical plate to the front side of the mounting vertical plate and is located above the indenter module. On one side in the radial direction of the rod-shaped part, there is an indenter motor, and an eccentric wheel is arranged at the output shaft end of the indenter motor. An eccentric wheel assembly is arranged at the output shaft end of the indenter motor. This eccentric wheel group cooperates with the spring at the bottom of the indenter module, and can realize downward extrusion of the indenter module or release of the indenter module by rotation.

[0010] Among them, the indenter module is installed in a mounting bracket fixed to the upper end of the detector module and can lift and slide in the mounting bracket. The indenter module includes an upper plate and a lower plate connected to the upper plate by four shaft rods. The lower plate is arranged above the upper end of the detector module. The bottom of the lower plate is connected to one end of a spring near each of the four corners, and the other end of the spring is fixed to the upper end of the detector mounting seat of the detector module.

[0011] Among them, a diaphragm protection cover is installed on the diaphragm stage, and the diaphragm protection cover is fixed to the mounting vertical plate.

[0012] Among them, bearing parts are installed at the front ends of the two side arms of the U-shaped part through U-shaped openings, and cooperate with the upper end of the indenter module through the bearing parts.

[0013] Among them, a pressure head air pipe seat for fixing the air pipe assembly is installed on the mounting bracket. The mounting bracket is fixed above the upper end of the detector mounting seat of the detector module through a support column, and the detector is installed on the detector mounting seat from the bottom of the detector mounting seat.

[0014] The β-ray method particulate matter monitoring device provided by the present invention can automatically control the extension of the diaphragm for calibration operation by setting a diaphragm extension mechanism, without the need for manual installation of the diaphragm calibration tooling, without manual operation of lifting and lowering the indenter, and can complete the overall operation with one key. If it is set to be controlled by a program for calibration, it is more accurate and there will be no problem of incorrect steps, greatly saving the manual workload and realizing automated operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view schematic diagram of the β-ray method particulate matter monitoring device of the present invention.

[0016] Figure 2 It is a schematic diagram when the pressing head module of the particulate matter monitoring device by the ray method of the present invention is lifted.

[0017] Figure 3 It is a schematic diagram when the pressing head module of the particulate matter monitoring device by the ray method of the present invention is pressed down.

[0018] Figure 4 It is an axonometric schematic diagram of the particulate matter monitoring device by the β-ray method of the present invention (excluding the detector module).

[0019] Figure 5 It is another axonometric schematic diagram of the particulate matter monitoring device by the β-ray method of the present invention (showing the back).

[0020] Figure 6 It is an axonometric schematic diagram of the main body part of the particulate matter monitoring device by the β-ray method of the present invention without the installation vertical plate.

[0021] Figure 7 It is a top view schematic diagram of the particulate matter monitoring device by the β-ray method of the present invention (the diaphragm carrier is in the extended state).

[0022] Figure 8 It is a top view schematic diagram of the particulate matter monitoring device by the β-ray method of the present invention (the diaphragm carrier is in the retracted state). Specific embodiments

[0023] The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The particulate matter monitoring device by the β-ray method provided by the embodiment of the present invention can automatically control the calibration diaphragm to extend by using the provided diaphragm extension structure, and automatically complete the detection of the diaphragm.

[0025] Such as Figures 1 to 8As shown in the figure, a particulate matter monitoring device using the beta-ray method according to an embodiment of the present invention includes a monitoring device body. The monitoring device body includes a detector module 5, a paper tape 4 wound around a paper tape wheel for monitoring. The paper tape includes a driving wheel 2 and a driven wheel 3, and a pressure head module 7 slidably connected to the detector module. A paper tape running passage is formed inside the detector module. The above are all well-known technologies of existing particulate matter monitoring devices using the beta-ray method, and the content of relevant patents before this application can be referred to. The innovation of this application lies in that the monitoring device body includes a diaphragm extending mechanism for diaphragm calibration; the diaphragm extending mechanism includes a diaphragm carrier 8 capable of reciprocating horizontally in a straight line under drive. The moving direction of the diaphragm carrier is perpendicular to the installation vertical plate 1 of the monitoring device body. A through hole 11 for the telescopic movement of the diaphragm carrier is formed on the installation vertical plate. The diaphragm extending mechanism is located on the rear side of the installation vertical plate, and the detector module is located on the front side of the installation vertical plate. The diaphragm carrier 8 can be driven to move back and forth through the through hole 11, and after extending forward, it is located above the paper tape to facilitate calibration.

[0026] As a preferred embodiment, the diaphragm carrier 8 is installed on a slider 82, and the slider is slidably matched with a linear guide 81. The linear module formed by the linear guide and the slider is vertically installed on the back side of the installation vertical plate 1, as Figure 5 shown. In this way, it can be realized that the diaphragm carrier moves back and forth along the linear guide after being driven, so as to extend through the through hole 11 to the front side of the installation vertical plate and extend above the detector of the detector module, and is located above the paper tape.

[0027] As a preferred embodiment, referring to Figure 5 shown, a vertical column �9 is arranged at the bottom of the diaphragm carrier. The vertical column 89 is slidably connected to a U-shaped opening at one end of a horizontally arranged driving arm 83 that drives the diaphragm carrier 8 to extend and retract. The other end of the driving arm 83 is hinged to a shaft member 87 that is vertically arranged at the top of the motor mounting bracket 86 of the diaphragm driving motor 84 and serves as its rotation center. One end of a tension spring 9 is connected between the two ends of the driving arm.

[0028] Among them, the output shaft of the diaphragm driving motor 84 is arranged vertically upward, and an eccentric wheel mechanism 85 that rotates horizontally is installed at the shaft end of the output shaft. The top of the eccentric wheel mechanism is in rolling contact with the driving arm through a bearing member. When the diaphragm driving motor 84 rotates to a predetermined position (as Figure 8 shown), through the horizontally rotating eccentric wheel mechanism 85, the driving arm 83 can be moved away from the installation vertical plate 1 and the tension spring 9 can be stretched, so that the diaphragm carrier 8 retracts. When the horizontally rotating eccentric wheel mechanism 85 rotates to another position (as Figure 7When in the state shown in [figure number], at this time, the bearing on the top of the eccentric wheel mechanism that contacts the driving arm contacts the left side of the driving arm. At this time, under the spring force of the tension spring 9, the diaphragm stage can extend, as shown in Figure 7 shown.

[0029] As a preferred embodiment, a folded edge 80 is provided along the moving direction on the outer side of the diaphragm stage 8. The folded edge 80 is arranged near the rear end of the diaphragm stage 8 and ends at a position near the middle. Through the folded edge 80, the position of the diaphragm stage 8 is fixed every time it extends, and it will closely abut against the mounting vertical plate every time it extends, realizing the function of extension limit.

[0030] As a preferred embodiment, the motor mounting bracket 86 is fixed on the rear side of the mounting vertical plate, and has a bottom plate and two vertical plates that are perpendicularly connected to the bottom plate and are spaced apart from each other in the thickness direction. The diaphragm driving motor 84 is mounted on the bottom plate, and the driving arm 83 is supported at the upper ends of the two vertical plates.

[0031] As a preferred embodiment, above the indenter module 7, an indenter tipping plate 6 that can swing up and down around the rotation center is provided. The indenter tipping plate has a U-shaped part and a rod-shaped part 63 connected to the outer side of the middle part of the U-shaped part. The U-shaped part is used to extend from the two tipping plate through holes 12 in the upper part of the mounting vertical plate to the front side of the mounting vertical plate 1 and is located above the indenter module 7. The two side arms of the indenter tipping plate 6 are rotatably connected to the mounting block 65 fixed on the rear side of the mounting vertical plate through a shaft member 64. By driving the rod-shaped part 63 at the rear end thereof and cooperating with the spring arranged at the bottom of the indenter module, the indenter tipping plate 6 can be rotated and swung around the shaft member.

[0032] As a preferred embodiment, a pressing head motor 61 is arranged on one side in the radial direction of the rod-shaped part. The output shaft end of the pressing head motor is provided with an eccentric wheel assembly 62. The top end of the eccentric wheel assembly 62 is provided with a bearing or a roller. Rolling cooperation is achieved through the contact between the bearing or the roller and the rod-shaped part. Among them, when the eccentric wheel assembly 62 rotates, through rotation, the indenter tipping plate 6 can be rotated clockwise, and its front end rotates downward, so that the indenter module is squeezed downward. And in cooperation with the spring at the bottom of the indenter module, the extrusion on the indenter module is released, so that the indenter tipping plate 6 rotates counterclockwise, and the indenter module is pulled up or jacked up and reset by the elastic mechanism.

[0033] As a preferred embodiment, the indenter module 7 is installed in a mounting bracket fixed to the upper end of the detector module 5 and can lift and slide in the mounting bracket. The indenter module includes an upper plate 71 with a through-hole formed in the middle for the sampling air pipe to pass through, and a lower plate 73 with a through-hole formed in the middle for detecting the sample, which is connected to the upper plate by four shaft rods 72. The lower plate is arranged above the upper end of the detector module 5. One end of each of four springs 56 is connected to the bottom of the lower plate 73 near the four corners, and the other end of the spring 56 is fixed to the upper end of the detector mounting base 51 of the detector module 5.

[0034] Among them, the top plate 54 of the mounting bracket with a through-hole formed in the middle for the sampling air pipe to pass through is fixed to the upper end of the detector mounting base 51 of the detector module 5 through a column 53. The four shaft rods 72 pass through the top plate 54 upward and are connected to the upper plate above the top plate 54. The lower plate is located between the detector mounting base 51 and the top plate above the detector mounting base 51. In addition, a pressure head air pipe seat 55 is installed on the mounting bracket to install an air pipe assembly (not shown). The detector 52 (β-ray detector) is installed on the detector mounting base 51 from the bottom of the detector mounting base 51. During detection, the detection gas enters through the air pipe assembly fixed in the pressure head air pipe seat 55, passes through the paper tape, and is discharged from the air outlet on the side surface of the detector mounting base. This part of the structure is prior art and will not be elaborated here.

[0035] The process of the indenter module running is as follows: the indenter motor rotates, driving the eccentric wheel to rotate. The bearing installed on the eccentric wheel contacts the rear end of the indenter rocker. When the eccentric wheel rotates, it will float up and down. The bearing or roller at the front end of the indenter rocker will contact the top of the upper plate, causing the upper plate to be squeezed down. At this time, the gap between the lower plate 73 and the detector mounting base becomes narrower, and the pressing action on the paper tape is released. At this time, the paper tape or the diaphragm carrier can move freely. When the indenter motor rotates again, under the action of the spring, the gap between the lower plate 73 and the detector mounting base will become wider, and the gap at the upper end will become smaller. The upper end of the lower plate 73 will press the paper tape tightly, and the paper tape will contact the air outlet of the sampling air pipe, forming a closed air pipe path. The detection gas enters through the air pipe assembly fixed in the pressure head air pipe seat 55, passes through the paper tape, and is discharged from the air outlet on the side surface of the detector mounting base.

[0036] As a preferred embodiment, a diaphragm protection cover 10 is installed on the diaphragm carrier, and the diaphragm protection cover is fixed to the mounting vertical plate. By setting the diaphragm protection cover, the built-in diaphragm can be prevented from being contaminated and play a role in protection, as Figure 6 shown.

[0037] As a preferred embodiment, bearing members 66 are mounted at the front ends of the two side arms of the U-shaped portion through a U-shaped opening, and cooperate with the upper end (i.e., the upper plate 71) of the indenter module through the bearing members 66. When the indenter rocker 6 rotates clockwise, the upper plate of the indenter module 7 can be extruded through the bearing member, so that the spring 56 at the bottom end of the lower plate is compressed. Conversely, when the indenter rocker 6 rotates again to release the extrusion on the indenter module, the indenter module is no longer extruded by the indenter rocker 6, and under the action of the spring 56, the indenter module 7 moves upward in the reverse direction.

[0038] The description of the diaphragm calibration process of the β-ray method particulate matter monitoring device according to the embodiment of the present invention is as follows:

[0039] Start the indenter motor 61. The indenter motor rotates, and through the rotation of the indenter rocker 6, the indenter module 7 is extruded, so that the gap between the lower plate 73 and the detector mounting seat becomes narrower. At this time, the paper tape can rotate and the diaphragm carrier can extend; the driving paper tape wheel 01 rotates, the paper tape rotates, reaches the specified position, and stops rotating; the diaphragm driving motor rotates, releases the driving arm, and the tension spring 9 tightens the driving arm. The driving arm pushes the front part of the diaphragm carrier 8 to extend from the through hole 11 to the maximum position, so that the carried diaphragm (not shown) can be completely located above the paper tape and then stops. The detector starts the diaphragm detection and calibration operation. After the detector completes the detection, the diaphragm driving motor rotates, extrudes the driving arm, so that the diaphragm carrier overcomes the tension of the tension spring and contracts to return to the initial state; then the indenter motor rotates, and the indenter rocker 6 releases the extrusion force on the indenter module. Under the action of the spring at the bottom, the lower plate 73 rises in the reverse direction, and the gap with the detector mounting seat becomes larger, and the paper tape is pressed; an overall process is completed.

[0040] The foregoing shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0041] Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. β-ray particulate matter monitoring equipment, including the monitoring equipment body, the monitoring equipment body includes a detector module, a paper tape wound around a paper tape wheel for monitoring, and a pressing head module slidably connected to the detector module, characterized in that, The monitoring device body includes a diaphragm extending mechanism for diaphragm calibration; the diaphragm extending mechanism includes a diaphragm stage that can be driven to reciprocate horizontally in a straight line, the moving direction of the diaphragm stage is perpendicular to the installation vertical plate of the monitoring device body, a through hole for the telescopic movement of the diaphragm stage is formed on the installation vertical plate, the diaphragm extending mechanism is located on the rear side of the installation vertical plate, the detector module is located on the front side of the installation vertical plate, the diaphragm stage can be driven to move back and forth through the through hole, and is located above the paper tape after extending forward; The diaphragm stage is installed on a slider, the slider is slidably matched with a linear guide rail, and the linear module formed by the linear guide rail and the slider is vertically installed on the back side of the installation vertical plate; A vertical column arranged vertically at the bottom of the diaphragm stage is slidably connected to a U-shaped opening at one end of a horizontally arranged driving arm that drives the diaphragm stage to extend and retract. The other end of the driving arm is hinged to a shaft member that is vertically arranged at the top of the motor mounting bracket of the diaphragm driving motor and serves as its rotation center. One end of a tension spring is connected between the two ends of the driving arm. The output shaft of the diaphragm driving motor is arranged vertically upward, and an eccentric wheel mechanism that rotates horizontally is installed at the shaft end of the output shaft. The eccentric wheel mechanism cooperates with the tension spring and can swing the driving arm back and forth through rotation, so that the diaphragm stage extends or retracts; Above the indenter module, there is an indenter rocker that can swing up and down around a rotation center. The indenter rocker has a U-shaped part and a rod-shaped part connected to the outside of the middle part of the U-shaped part. The U-shaped part is used to extend from two rocker extension holes in the upper part of the installation vertical plate to the front side of the installation vertical plate and is located above the indenter module. An indenter motor is arranged on one side in the radial direction of the rod-shaped part. An eccentric wheel assembly is arranged at the output shaft end of the indenter motor. The eccentric wheel assembly cooperates with a spring at the bottom of the indenter module and can realize downward extrusion of the indenter module or release of the indenter module through rotation.

2. The β-ray method particulate matter monitoring device according to claim 1, wherein The motor mounting bracket is fixed on the installation vertical plate and has a bottom plate and two vertical plates that are vertically connected to the bottom plate and are separated from each other in the thickness direction. The diaphragm driving motor is installed on the bottom plate, and the driving arm is supported at the upper ends of the two vertical plates.

3. The β-ray method particulate matter monitoring device according to claim 1, wherein The indenter module is installed in a mounting bracket fixed to the upper end of the detector module and can slide up and down in the mounting bracket. The indenter module includes an upper plate and a lower plate connected to the upper plate by four shaft rods. The lower plate is arranged above the upper end of the detector module. One end of a spring is connected to each of the positions near the four corners at the bottom of the lower plate, and the other end of the spring is fixed to the upper end of the detector mounting seat of the detector module.

4. The β-ray method particulate matter monitoring device according to claim 1, wherein, A diaphragm protection cover is installed on the diaphragm stage, and the diaphragm protection cover is fixed to the installation vertical plate.

5. The β-ray method particulate matter monitoring device according to claim 1, characterized in that, Bearings are installed at the front ends of the two side arms of the U-shaped part through U-shaped openings, and are matched with the upper end of the indenter module through the bearings.

6. The β-ray method particulate matter monitoring device according to claim 3, characterized in that, A pressure head air pipe seat is installed on the mounting bracket. The mounting bracket is fixed above the upper end of the detector mounting seat of the detector module through a support column. The detector is installed on the detector mounting seat from the bottom of the detector mounting seat.

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