A multifunctional portable air quality detector

Abstract

A multifunctional portable air quality detector, which relates to the technical field of air detection equipment. The pressing plate is pushed to move by a pushing mechanism, and the pressing plate pushes the support rod to move into the probe cavity. After the support rod enters the probe cavity, the brush on it can scrape the detection probe in the probe cavity. At the same time, by pressing the cleaning handle, the cleaning handle drives the rack to move, the rack pushes the toothed ring to rotate, the movement of the toothed ring drives the collection tube to rotate unidirectionally through a one-way ratchet, the collection tube drives the support rod and the brush as a whole to move around the axis of the collection tube, and the brush is used to move and scrape the detection probe in the probe cavity to clean the dust on the probe. During the cleaning process, there is no need to disassemble the detector, and the operation is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of air detection equipment, and particularly relates to a multifunctional portable air quality detector. Background Art

[0002] An air quality detector is an instrument for detecting the concentration of air pollutants, which uses a detection probe built into the instrument to detect the concentration of specified pollutants in the air;

[0003] When the detector is in use, dust in the air will inevitably enter the detection cavity of the detector. The dust accumulates on the detection probe in the detection cavity, which will affect the sensitivity of the detection probe, thus causing measurement errors. In the existing air quality detectors, it is not convenient to clean the dust on the detection probe in the detection cavity. During the cleaning process, the detector needs to be disassembled, and the cleaning process is troublesome. Summary of the Invention

[0004] What the present invention aims to overcome is the problem that in the existing air quality detectors, it is not convenient to clean the dust on the detection probe in the detection cavity. The purpose is to provide a multifunctional portable air quality detector.

[0005] The technical problems to be solved by the present invention are realized by adopting the following technical solutions:

[0006] A multifunctional portable air quality detector, including a housing, a pushing mechanism, a probe cavity, and a cleaning handle;

[0007] The probe cavity is a pipe pile structure, with a probe installation section having a relatively small inner diameter in the middle and connecting sections having relatively large inner diameters at both ends;

[0008] A collection port is provided at the upper part of the housing. A collection pipe is rotatably installed in the collection port. The pushing mechanism is installed inside the housing. A pressing plate is rotatably installed on the moving part of the pushing mechanism. Support guide grooves are arranged in an equiangular matrix on the outer circumferential side of the collection pipe. A support rod is slidably installed in the support guide groove. The upper end of the support rod is fixed on the pressing plate. A brush is installed on the support rod. When the pushing mechanism pushes the pressing plate downward, the support rod connected to the pressing plate can push the brush into the probe installation section of the probe cavity;

[0009] The cleaning handle is hingedly installed on the housing. A rack is connected to the end of the cleaning handle away from the hinge point. A one-way ratchet is installed on the collection pipe. A toothed ring is fixed on the outer ring of the one-way ratchet. The rack meshes with the toothed ring.

[0010] Further, the pushing mechanism includes a support sleeve, a guide sleeve, a pressing sleeve, a cooperation sleeve, and a pressing spring. The guide sleeve is fixedly installed on the support sleeve. The guide sleeve is provided with pushing guide grooves in an equiangular matrix arrangement. The pressing sleeve is slidably installed on the pushing guide grooves. The cooperation sleeve is provided with an outward convex rod that can be inserted into the pushing guide grooves. A limiting ring is fixed on the collection tube. The cooperation sleeve is located above the limiting ring. The pressing spring is located between the limiting ring and the cooperation sleeve.

[0011] Further, an adjustment slideway is provided on the outer housing. A sliding switch is arranged in the adjustment slideway. A lever is fixed on the sliding switch. The lever is connected to the pressing sleeve.

[0012] Further, the lower end of the guide sleeve is provided with a first sawtooth. One side side edge of the first sawtooth is a vertical plane arranged along the axis of the guide sleeve, and the other side is an inclined plane. There is a complete first sawtooth between adjacent two pushing guide grooves. And one side of the pushing guide groove coincides with the vertical plane of the first sawtooth at its end. The lower end of the pressing sleeve is provided with a second sawtooth. The two sides of the second sawtooth are respectively guiding inclined planes. One of the guiding inclined planes is parallel to the inclined plane of the first sawtooth. And this guiding inclined plane intersects with the section plane passing through the axis of the guide sleeve where the end point of the first sawtooth is located. The upper end of the outward convex rod is provided with an inclined cutting plane parallel to the inclined plane on the first sawtooth. The upper end of the outward convex rod can contact the first sawtooth and the second sawtooth.

[0013] Further, the pressing plate is located between the pressing spring and the cooperation sleeve. A support bearing is arranged between the pressing plate and the cooperation sleeve.

[0014] Further, the support sleeve, the pressing sleeve, and the cooperation sleeve are all coaxial with the collection tube and are sleeved on the collection tube.

[0015] Further, a fan is installed at the bottom of the outer housing. A duct is provided above the fan. The lower end of the probe cavity is inserted into the interior of the duct. A connecting ring is provided at the upper end of the duct. A first rubber ring is installed at the lower end of the probe cavity. A first damping spring is arranged between the connecting ring and the first rubber ring.

[0016] Further, a second rubber ring is provided at the lower end of the collection tube. The second rubber ring is located inside the upper connection section of the probe cavity. The support rod passes through the second rubber ring and is connected with a pressing ring gasket.

[0017] Further, a second damping spring is installed between the second rubber ring and the upper end of the probe cavity.

[0018] Further, a support arc plate is installed on the outer circle of the probe installation section of the probe cavity. A damping rod is connected between the support arc plate and the outer housing.

[0019] The beneficial effects of the present invention are:

[0020] The pressing plate is pushed by a pushing mechanism, and the pressing plate pushes the support rod into the probe cavity. After the support rod enters the probe cavity, the brush on it can scrape the detection probe in the probe cavity. At the same time, by pressing the cleaning handle, the cleaning handle drives the rack to move, the rack pushes the toothed ring to rotate, and the movement of the toothed ring drives the collection tube to rotate unidirectionally through the one-way ratchet. The collection tube drives the support rod and the brush as a whole to move around the axis of the collection tube, and the brush is used to move and scrape the detection probe in the probe cavity to clean the dust on the probe. There is no need to disassemble the detector during the cleaning process, and the operation is simple;

[0021] After the cleaning is completed, the brush can be retracted, and the brush will not stay in the probe wall, reducing the influence of the brush on the detection probe when the detector is in use;

[0022] The first shock-absorbing spring, the second shock-absorbing spring, the first rubber ring, the second rubber ring, the top pressure spring and the support rod are used to form a support for the probe cavity. When the outer housing is impacted in the axial direction of the probe cavity, the impact force can be buffered to a certain extent, reducing the vibration of the probe cavity. Description of the Drawings

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is an installation schematic diagram of the probe cavity of the present invention;

[0025] Figure 3 It is an installation schematic diagram of the rack of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the pushing mechanism of the present invention;

[0027] Figure 5 It is a structural diagram of the guide sleeve, the top pressure sleeve and the cooperation sleeve of the present invention.

[0028] In the figure: 1. Outer housing; 2. Pushing mechanism; 3. Probe cavity; 4. Cleaning grip; 12. Collection port; 13. Collection tube; 14. Pressing plate; 15. Support guide groove; 16. Support rod; 17. Brush; 18. Rack; 19. One-way ratchet; 20. Tooth ring; 31. Support sleeve; 32. Guide sleeve; 33. Pressing sleeve; 34. Cooperative sleeve; 35. Pressing spring; 36. Slide switch; 37. Pushing guide groove; 38. Connecting convex block; 39. First serration; 40. Second serration; 101. Vertical plane; 102. Inclined plane; 103. Guide inclined plane; 41. Outer convex rod; 104. Oblique cutting plane; 42. Limit ring; 43. Adjusting slideway; 44. Lever; 51. Support bearing; 52. Fan; 53. Air duct; 54. Connecting ring; 55. First rubber ring; 56. First shock-absorbing spring; 57. Second rubber ring; 58. Pressure ring pad; 59. Second shock-absorbing spring; 60. Support arc plate; 61. Damping rod. Detailed implementation mode

[0029] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific drawings. Embodiment 1

[0030] As Figures 1 - 3 shown, a multifunctional portable air quality detector, including an outer housing 1, a pushing mechanism 2, a probe cavity 3, and a cleaning grip 4;

[0031] The probe cavity 3 is a pipe pile structure, with a probe installation section having a relatively small inner diameter in the middle and connecting sections with relatively large inner diameters at both ends;

[0032] The upper part of the outer housing 1 is provided with a collection port 12. A collection tube 13 is rotatably installed in the collection port 12. The pushing mechanism 2 is installed inside the outer housing 1. A pressing plate 14 is rotatably installed on the moving part of the pushing mechanism 2. Support guide grooves 15 are arranged in an equiangular matrix on the outer circumferential side of the collection tube 13. A support rod 16 is slidably installed in the support guide grooves 15. The upper end of the support rod 16 is fixed on the pressing plate 14. A brush 17 is installed on the support rod 16. When the pushing mechanism 2 pushes the pressing plate 14 downward, the support rod 16 connected to the pressing plate 14 can push the brush 17 into the probe installation section of the probe cavity 3;

[0033] The cleaning grip 4 is hingedly installed on the outer housing 1. One end of the cleaning grip 4 away from the hinge point is connected to a rack 18. A torsion spring is installed at the hinge point between the cleaning grip 4 and the outer housing 1. The torsion spring applies a torsion force to the cleaning grip 4 to deflect it away from the outer housing. A limiting groove is provided on the cleaning grip 4. One end of the rack 18 is located in the limiting groove. A limiting block is provided on the rack 18. The limiting block is located inside the outer housing 1 to prevent the rack 18 from detaching from the outer housing 1. A one-way ratchet 19 is installed on the collection tube 13. A toothed ring 20 is fixed to the outer ring of the one-way ratchet 19. The rack 18 meshes with the toothed ring 20;

[0034] The detection probe is installed at the probe installation section position in the probe cavity 3. When the detection probe needs to be cleaned, the pressing plate 14 is pushed to move by the pushing mechanism 2. The pressing plate 14 pushes the support rod 16 to move into the probe cavity 3. After the support rod 16 enters the probe cavity 3, the brush 17 on it can scrape the detection probe in the probe cavity 3. At the same time, by pressing the cleaning grip 4, the cleaning grip 4 drives the rack 18 to move. The rack 18 pushes the toothed ring 20 to rotate. The movement of the toothed ring 20 drives the collection tube 13 to rotate unidirectionally through the one-way ratchet 19. The collection tube 13 drives the support rod 16 and the brush 17 as a whole to move around the axis of the collection tube 13. The brush 17 is used to scrape the detection probe while moving in the probe cavity 3 to clean the dust on the probe. During the cleaning process, there is no need to disassemble the detector, and the operation is simple. Embodiment 2

[0035] Based on Embodiment 1, as Figures 1 - 5As shown, the pushing mechanism 2 includes a support sleeve 31, a guiding sleeve 32, a pressing sleeve 33, a cooperative sleeve 34, a pressing spring 35, and a sliding switch 36. The support sleeve 31 is fixed on the outer housing 1, the guiding sleeve 32 is fixedly installed on the support sleeve 31, the pressing sleeve 33 is located inside the guiding sleeve 32. The guiding sleeve 32 is provided with pushing guide grooves 37 in an equiangular matrix. The pushing guide grooves 37 are arranged along the axis of the guiding sleeve 32, and the lower ends of the pushing guide grooves 37 are open. A connecting convex block 38 is provided on the outer circumferential side of the pressing sleeve 33, and the connecting convex block 38 is located in the pushing guide groove 37. The lower end of the guiding sleeve 32 is provided with first sawteeth 39 in an equiangular matrix. One side side edge of the first sawteeth 39 is a vertical surface 101 arranged along the axis of the guiding sleeve 32, and the other side is an inclined surface 102. There is a complete first sawtooth 39 between adjacent two pushing guide grooves 37. When the first sawteeth 39 coincide with the ends of the pushing guide grooves 37, the vertical side of the first sawteeth 39 coincides with the side wall of the pushing guide groove 37. The lower end of the pressing sleeve 33 is provided with second sawteeth 40 in an equiangular matrix. The two sides of the second sawteeth 40 are respectively guiding inclined surfaces 103. One of the guiding inclined surfaces 103 is parallel to the inclined surface 102 of the first sawteeth 39, and this guiding inclined surface 103 intersects with the section plane passing through the axis of the guiding sleeve 32 where the end points of the first sawteeth 39 are located. The outer circumference of the cooperative sleeve 34 is provided with outer convex rods 41 corresponding to the pushing guide grooves 37. The upper end of the outer convex rod 41 is provided with an inclined cutting surface 104 parallel to the inclined surface 102 on the first sawteeth 39. The outer convex rod 41 can be inserted into the pushing guide groove 37 when it moves upward, and the upper end of the outer convex rod 41 can contact the first sawteeth 39 and the second sawteeth 40. A limiting ring 42 is fixed on the collecting tube 13, and the cooperative sleeve 34 is located above the limiting ring 42. The pressing spring 35 is located between the limiting ring 42 and the cooperative sleeve 34;

[0036] An adjusting slideway 43 is provided on the outer housing 1. The adjusting slideway 43 is parallel to the axis of the pressing sleeve 33. The sliding switch 36 is installed in the adjusting slideway 43. A lever 44 is fixed on the sliding switch 36, and the lever 44 is connected to the pressing sleeve 33;

[0037] The support sleeve 31, the pressing sleeve 33, and the cooperative sleeve 34 are all coaxial with the collecting tube 13 and are sleeved on the collecting tube 13;

[0038] The pressing plate 14 is located between the pressing spring 35 and the cooperative sleeve 34. A support bearing 51 is arranged between the pressing plate 14 and the cooperative sleeve 34 to reduce the friction between the pressing plate 14 and the cooperative sleeve 34 by using the support bearing 51;

[0039] The top pressure spring 35 applies an upward thrust to the cooperation sleeve 34, causing the convex rod 41 on the cooperation sleeve 34 to upwardly press the first sawtooth 39 or the second sawtooth 40. By pushing the sliding switch 36 to move downward in the adjustment slideway 43, the sliding switch 36 drives the lever 44 to move downward along the axis direction of the top pressure sleeve 33, and further drives the top pressure sleeve 33 to move downward. When the top pressure sleeve 33 moves downward, the second sawtooth 40 at its lower end contacts the convex rod 41 on the cooperation sleeve 34. Restricted by the vertical surface 101 of the first sawtooth 39 and the guiding inclined surface 103 of the second sawtooth 40, the cooperation sleeve 34 is pushed to move along the axis. When the end of the convex rod 41 moves to the end of the first sawtooth 39, at this time, the convex rod 41 is no longer restricted by the vertical surface 101 of the first sawtooth 39. As the second sawtooth 40 continues to move downward, the convex rod 41 is completely separated from the first sawtooth 39. At the same time, due to the pressure of the top pressure spring 35 and the action of the guiding inclined surface 103 on the second sawtooth 40, the convex rod 41 will move along the guiding inclined surface 103 of the second sawtooth 40, and then the tooth of the convex rod 41 enters the adjacent first sawtooth 39;

[0040] When the convex rod 41 moves into the first sawtooth 39 between two adjacent pushing guide grooves 37, supported by the first sawtooth 39, at this time, the cooperation sleeve 34 is located at the lowermost end of the guiding sleeve 32. The cooperation sleeve 34 downwardly presses the pressing plate 14, and pushes the brush 17 on the support rod 16 into the probe cavity 3. When the convex rod 41 moves into the first sawtooth 39 that coincides with the pushing guide groove 37, the convex rod 41 on the cooperation sleeve 34 is completely inserted into the pushing guide groove 37. At this time, the cooperation sleeve 34 and the pressing plate 14 move upward together under the action of the top pressure spring 35, and further drive the support rod 16 and the brush 17 to move upward, thereby completing the retraction of the brush 17, and avoiding the brush 17 contacting the detection probe during the use of the detector and affecting the accuracy. Embodiment 3

[0041] On the basis of Embodiment 1, as Figures 1 - 5 shown, a fan 52 is installed at the bottom of the outer shell 1. A duct 53 is provided above the fan 52. The lower end of the probe cavity 3 is inserted into the interior of the duct 53. A connecting ring 54 is provided at the upper end of the duct 53. A first rubber ring 55 is installed at the lower end of the probe cavity 3. A first shock-absorbing spring 56 is provided between the connecting ring 54 and the first rubber ring 55;

[0042] The lower end of the collection tube 13 is provided with a second rubber ring 57. The second rubber ring 57 is located inside the upper connection section of the probe cavity 3. The support rod 16 passes through the second rubber ring 57 and is connected with a pressure ring pad 58. After the support rod 16 is completely retracted into the support guide groove 15, the top pressure spring 35 acts on the pressing plate 14 to pull the support rod 16, so that the support rod 16 pulls the pressure ring pad 58 to always apply an upward pulling force on the second rubber ring 57, making the second rubber ring 57 closely adhere to the notch of the support guide groove 15. In this way, the notch of the support guide groove 15 is closed, reducing the influence of the brush 17 on the probe in the probe cavity 3 during the detection process;

[0043] A second shock-absorbing spring 59 is installed between the second rubber ring 57 and the upper end of the probe cavity 3;

[0044] Using the first shock-absorbing spring 56, the second shock-absorbing spring 59, the first rubber ring 55, the second rubber ring 57, as well as the top pressure spring 35 and the support rod 16 to form the support for the probe cavity 3. When the outer housing 1 is impacted in the axial direction of the probe cavity 3, it can buffer a certain impact force and reduce the vibration of the probe cavity 3;

[0045] A support arc plate 60 is installed on the outer ring of the probe installation section of the probe cavity 3. A damping rod 61 is connected between the support arc plate 60 and the outer housing 1. Two damping rods 61 are connected to each support arc plate 60. A triangular structure is formed between the two damping rods 61 and the outer housing 1, thus realizing the buffering of the radial impact force on the probe cavity 3.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional portable air quality detector, characterized in that: include: Outer shell, pushing mechanism, probe cavity, cleaning handle; The probe cavity is a pipe pile structure, with a probe installation section with a thinner inner diameter in the middle and connecting sections with a thicker inner diameter at both ends; The outer shell is provided with a collection port at the top, a collection tube is rotatably installed in the collection port, the pushing mechanism is installed inside the outer shell, a pressing plate is rotatably installed on the moving part of the pushing mechanism, and support guide grooves are arranged in a matrix at equal angles on the outer ring side of the collection tube, a support rod is slidably installed in the support guide groove, the upper end of the support rod is fixed on the pressure plate, a brush is installed on the support rod, and when the pushing mechanism pushes the pressure plate to move downward, the support rod connected to the pressure plate can push the brush into the probe installation section of the probe cavity; The cleaning handle is hingedly mounted on the outer shell, and one end of the cleaning handle away from the hinge point is connected to a rack. A one-way ratchet is mounted on the collection tube, and a toothed ring is provided on the outer fixed ring of the one-way ratchet, and the rack is meshed with the toothed ring. The pushing mechanism comprises a supporting sleeve, a guiding sleeve, a pressing sleeve, a cooperating sleeve and a pressing spring. The guiding sleeve is fixedly mounted on the supporting sleeve. The guiding sleeve is provided with pushing guide grooves in a matrix at equal angles. The pressing sleeve is slidably mounted on the pushing guide grooves. The cooperating sleeve is provided with an outer convex rod which can be inserted into the pushing guide groove. A limiting ring is fixed on the collecting tube. The cooperating sleeve is located on the upper part of the limiting ring. The pressing spring is located between the limiting ring and the cooperating sleeve. The guide sleeve is provided with a first sawtooth at the lower end, one side of the first sawtooth is a vertical surface set along the axis of the guide sleeve, and the other side is an inclined surface, there is a complete first sawtooth between two adjacent push guide grooves, and one side of the push guide groove coincides with the vertical surface of the first sawtooth at its end, the top pressure sleeve is provided with a second sawtooth at the lower end, both sides of the second sawtooth are guide inclined surfaces, one side of the guide inclined surface is parallel to the inclined surface of the first sawtooth, and the side guide inclined surface intersects with the tangent surface of the first sawtooth through the axis of the guide sleeve, the upper end of the outer convex rod is provided with a chamfered surface parallel to the inclined surface on the first sawtooth, and the upper end of the outer convex rod can contact the first sawtooth and the second sawtooth; The pressure plate is located between the top pressure spring and the cooperative sleeve, and a support bearing is arranged between the pressure plate and the cooperative sleeve; A fan is installed at the bottom of the outer shell, an air duct is provided on the upper part of the fan, the lower end of the probe cavity is inserted into the air duct, a connecting ring is provided on the upper end of the air duct, a first rubber ring is installed on the lower end of the probe cavity, and a first shock-absorbing spring is provided between the connecting ring and the first rubber ring; A second rubber ring is provided at the lower end of the collection tube, the second rubber ring is located inside the upper connecting section of the probe cavity, and the support rod passes through the second rubber ring and is connected to a pressure ring pad; A second shock absorbing spring is installed between the second rubber ring and the upper end of the probe cavity; A supporting arc plate is installed on the outer ring of the probe installation section of the probe cavity, and a damping rod is connected between the supporting arc plate and the outer shell.

2. A multifunctional portable air quality detector according to claim 1, characterized in that: An adjusting slide is arranged on the outer shell, a sliding switch is arranged in the adjusting slide, a shifting rod is fixed on the sliding switch, and the shifting rod is connected to the top pressing sleeve.

3. A multifunctional portable air quality detector according to claim 1, characterized in that: The support sleeve, the top pressure sleeve and the cooperative sleeve are all coaxial with the collection pipe, and the ring sleeve is installed on the collection pipe.

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