Formaldehyde detection method for building materials

Abstract

The invention relates to the technical field of formaldehyde detection, in particular to a formaldehyde detection method for building materials. The formaldehyde detection method for the building material comprises the following steps: S1, presetting: preparing formaldehyde detection equipment in advance, and moving the formaldehyde detection equipment into a building room to be detected; s2, detection: after the step S1, formaldehyde detection equipment is used for carrying out formaldehyde detection on the building materials in the building to be detected; the formaldehyde detection equipment comprises a bottom plate. Compared with the prior art, the formaldehyde detection method for the building materials has the beneficial effects that fixed-point detection can be conveniently performed on the building materials on the ground, the wall surfaces and the roofs, meanwhile, the surfaces of the detected building materials can be covered, interference of the external environment can be avoided, air in the telescopic cover can be automatically circulated and is close to the formaldehyde detector, and the formaldehyde detection efficiency is improved. Therefore, the accuracy of the detection result is improved, the sampled building material sample can be conveniently and independently detected, the functionality is higher, and the detection effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of formaldehyde detection, in particular to a formaldehyde detection method for building materials. Background Art

[0002] The main sources of formaldehyde in building interiors are home decoration materials and board furniture, especially newly decorated rooms with high formaldehyde content, which is the main factor inducing many diseases and is also a recognized carcinogen and environmental pollutant. With the improvement of people's health and environmental protection concepts, after the decoration of a general family is completed, formaldehyde will be detected indoors, and only after the test is qualified can they move in. CN112285299A discloses a new type of environmentally friendly building material formaldehyde detection equipment, including a main shell component, a rear drive assembly, a front steering assembly, and a formaldehyde detection assembly; the main shell component is a structural main body, including a bottom shell and an upper cover; the rear drive assembly is fixedly installed at the rear end of the bottom shell in the main shell component, which can provide power for forward and backward movement; the front steering assembly is fixedly installed at the front end of the bottom shell in the main shell component, which is used to realize automatic steering during movement; the formaldehyde detection assembly is fixedly installed at the detection assembly installation position of the upper cover in the main shell component, and the formaldehyde detection assembly includes four sets of automatically rotating formaldehyde detectors, which can detect gases at different sampling points in the area with higher accuracy, and can move up and down under the drive of the lifting drive motor, and the detection range is wider.

[0003] However, when using existing formaldehyde detection equipment for building materials, it is not convenient to carry out fixed-point detection of building materials on the ground, walls and roofs. The detection area is large, which affects the accuracy of the detection results. During the detection, it is easily disturbed by the external environment. At the same time, it is not convenient to circulate the air in the detection area, which will also affect the accuracy of the detection results. In addition, it is not convenient to carry out individual detection of the sampled building material samples, and the functionality is poor. Summary of the invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a formaldehyde detection method for building materials to solve the problems that the existing formaldehyde detection equipment for building materials is not convenient for fixed-point detection of building materials on the ground, walls and roofs when in use, the detection area is large, which affects the accuracy of the detection result, and is easily disturbed by the external environment during detection. At the same time, it is not convenient to circulate the air in the detection area, which also affects the accuracy of the detection result, and it is not convenient to individually detect the sampled building material samples, resulting in poor functionality.

[0005] The technical solution of the present invention to solve the above technical problem is as follows: A formaldehyde detection method for building materials comprises the following steps: S1: Pre-set, prepare the formaldehyde detection equipment, and move it to the indoor of the building to be tested; S2: Detection: after step S1, formaldehyde detection equipment is used to detect formaldehyde in building materials in the building to be tested; The formaldehyde detection device includes a base plate, the bottom of the base plate is fixedly connected to a plurality of symmetrically arranged universal wheels, and a notch is provided at the top of the base plate, the top of the base plate is connected to a fixed rod through a lifting mechanism, and the side wall of the fixed rod is connected to a rotating plate through a rotating mechanism, the bottom of the rotating plate is connected to a detection box through a moving mechanism, and a box door is provided on the side wall of the detection box, the bottom of the detection box is fixedly connected to a telescopic cover, and the bottom of the telescopic cover is fixedly connected to a rubber pad, the rubber pad is connected to the side wall of the detection box through a first reset mechanism, and an installation groove is provided at the bottom of the detection box, a rotating disk is connected in the installation groove through a flipping mechanism, and a groove is provided on the side wall of the rotating disk, a formaldehyde detector is fixedly connected in the groove, and a circulation mechanism for circulating the air in the telescopic cover is provided at the bottom of the detection box.

[0006] The beneficial effects of the present invention are: 1) By setting a lifting mechanism, when it is necessary to conduct formaldehyde detection on indoor building materials, the bottom plate is moved indoors, and then the second motor is started. The rotation of the second motor drives the rotation of the gear, thereby driving the gear ring and the rotating ring to rotate, and then driving the rotating plate and the detection box to rotate, so as to facilitate the adjustment of the angle of the detection box. When the detection box is vertically downward, formaldehyde detection can be performed on the building materials on the ground. When the detection box faces both sides, formaldehyde detection can be performed on the building materials on the wall. When the detection box is vertically upward, formaldehyde detection can be performed on the building materials on the roof, thereby meeting the formaldehyde detection of building materials on the ground, walls and roof. Applicability It is stronger and the detection is more convenient and quick. Then, the first motor is started. The rotation of the first motor drives the rotation of the first threaded rod, and then drives the fixed rod and the detection box to rise and fall, so as to facilitate the adjustment of the detection height. It is more applicable and more convenient to use. After the adjustment is completed, the third motor is started. The rotation of the third motor drives the rotation of the second threaded rod, and then drives the detection box to move. When the rubber pad is against the surface of the building material to be detected, the telescopic cover and the first spring are compressed, so that the surface of the detected building material can be covered, and the formaldehyde detector is used to collect and detect the formaldehyde gas in the internal area, which can avoid interference from the external environment and improve the accuracy of the detection result.

[0007] 2) By setting a circulation mechanism, when formaldehyde detection is carried out on the building materials of the ground, wall and roof, when the telescopic cover and the first spring are gradually compressed, the rubber protrusion on the roller will also be against the surface of the building material, and at the same time, the first T-shaped guide rod will move upward, and the second spring will be compressed. Then, by pushing the bottom plate, the rubber pad will be moved back and forth on the surface of the building material in a small range. At this time, the roller can rotate, and the roller can automatically adjust the direction according to the direction of movement to ensure that the roller will always roll when the detection box moves. The rotation of the roller drives the rotation of the rotating shaft and the fixed ring. When the hemispherical block is against the side wall of the push block, the piston is pushed to move by the push rod. At the same time, the third spring is compressed. When the hemispherical block passes over the side wall of the push block, the piston can move and reset under the action of the third spring. This reciprocating process can make the piston reciprocate in the working tube, and the movement rate of the piston is consistent with that of the roller. The rotation of the two phases is synchronized, which not only ensures the consistent pace of detection, but also realizes precise speed control and stable air extraction, thereby improving the detection accuracy; when the piston moves in the direction close to the rotating shaft, negative pressure is generated in the fixed tube, and at the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, the air in the telescopic cover enters the fixed tube through the air extraction pipe. When the piston moves in the direction away from the rotating shaft, the air in the fixed tube can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air in the fixed tube is squeezed and enters the hose through the air outlet pipe and is sprayed out through the air blowing pipe to the vicinity of the formaldehyde detector. Not only can the air in the telescopic cover be automatically circulated, but also the air can be brought close to the formaldehyde detector. During detection, the detection part is first covered by the telescopic cover, and then the internal air is automatically circulated, which can improve the efficiency and effect of the circulation, and can avoid interference from the external environment, thereby improving the accuracy of the detection result.

[0008] 3) By setting up a flipping mechanism, when it is necessary to sample and test the building materials, the sample of the building materials is placed in the test box and the box door is closed. Then, the fourth motor is started. The rotation of the fourth motor drives the rotation of the rotating rod and the rotating disk, so that the formaldehyde detector is flipped upward and placed in the test box. At this time, the formaldehyde detector can be used to collect and test the formaldehyde gas in the internal area of ​​the test box, making it more functional and having a better test effect.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the lifting mechanism includes a first set of rods fixedly connected to the top of the base plate, and the side wall of the first set of rods is sleeved with a first sleeve, the upper end of the first sleeve is fixed to the bottom of the fixed rod, and the bottom of the fixed rod is fixedly connected to a first threaded tube, the first threaded tube is threadedly connected to a first threaded rod, the lower end of the first threaded rod is rotatably connected to the top of the base plate, and the bottom of the base plate is fixedly connected to a first motor.

[0011] The beneficial effect of adopting the above further scheme is that when the first motor is started, the rotation of the first motor drives the rotation of the first threaded rod, and then drives the fixed rod and the detection box to rise and fall, thereby facilitating the adjustment of the detection height, and having stronger applicability and more convenient use.

[0012] Furthermore, the rotating mechanism includes a rotating ring rotatably connected to the side wall of the fixed rod, and the upper end of the rotating plate is fixed to the side wall of the rotating ring, the end of the rotating ring is fixedly connected to a gear ring, and the side wall of the fixed rod is fixedly connected to a fixed block, the side wall of the fixed block is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a gear.

[0013] The beneficial effect of adopting the above further scheme is that the second motor is started, and the rotation of the second motor drives the rotation of the gear, thereby driving the ring gear and the rotating ring to rotate, and then driving the rotating plate and the detection box to rotate, so as to facilitate the adjustment of the angle of the detection box, which can meet the formaldehyde detection of building materials on the ground, walls and roof, and can adapt to the tilt state of the ground, walls and roof.

[0014] Furthermore, the moving mechanism includes a connecting plate fixedly connected to the lower end of the rotating plate, and the bottom of the connecting plate is fixedly connected to a second set of rods, the side wall of the second set of rods is sleeved with a second sleeve, and the lower end of the second sleeve is fixed to the top of the detection box, the bottom of the connecting plate is rotatably connected to a second threaded rod, and the side wall of the second threaded rod is threadedly connected to a second threaded tube, the lower end of the second threaded tube is fixed to the top of the detection box, and the top of the connecting plate is fixedly connected to a third motor.

[0015] The beneficial effect of adopting the above further solution is that when the third motor is started, the rotation of the third motor drives the rotation of the second threaded rod, thereby driving the detection box to move.

[0016] Further, the first resetting mechanism includes a first connecting block fixedly connected to the side wall of the detection box, and the bottom of the first connecting block is fixedly connected to two symmetrically arranged third rods, the side wall of the third rod is sleeved with a third sleeve, and the lower end of the third sleeve is fixedly connected to the second connecting block, the second connecting block is fixed to the side wall of the rubber pad, and the side wall of the third sleeve is sleeved with a first spring.

[0017] The beneficial effect of adopting the above further scheme is that when the rubber pad is in contact with the surface of the building material to be tested, the telescopic cover and the first spring are compressed, so that the surface of the building material to be tested can be covered, and the formaldehyde detector can be used to collect and detect the formaldehyde gas in the internal area, thereby avoiding interference from the external environment and improving the accuracy of the test results.

[0018] Furthermore, the flipping mechanism includes a fourth motor fixedly connected to the side wall of the detection box, the output end of the fourth motor passes through the installation groove and is fixedly connected to the rotating rod, and the rotating disk is fixedly sleeved on the side wall of the rotating rod.

[0019] The beneficial effect of adopting the above further scheme is that when it is necessary to sample and test the building materials, the sample of the building materials is placed in the test box and the box door is closed. Then, the fourth motor is started. The rotation of the fourth motor drives the rotation of the rotating rod and the rotating disk, thereby flipping the formaldehyde detector upward and placing it in the test box. At this time, the formaldehyde detector can be used to collect and test the formaldehyde gas in the internal area of ​​the test box, making it more functional and having better detection effect.

[0020] Furthermore, the circulation mechanism includes a U-shaped plate fixedly connected to the bottom of the detection box, and the bottom of the U-shaped plate is connected to a U-shaped moving frame through a second reset mechanism, the side wall of the moving frame is rotatably connected to a roller through a rotating shaft, and the side wall of the roller is fixedly connected to a plurality of rubber protrusions arranged in an array, the side wall of the moving frame is fixedly connected to a connecting frame, and the side wall of the connecting frame is fixedly connected to a fixed pipe, the lower end of the fixed pipe is fixedly connected to an exhaust pipe, and a first one-way valve is arranged in the exhaust pipe, the upper end of the fixed pipe is fixedly connected to an air outlet pipe, and a second one-way valve is arranged in the air outlet pipe, an air blowing pipe is fixedly inserted into the side wall of the U-shaped plate, and a hose is fixedly connected between the air outlet pipe and the air blowing pipe, the side wall of the fixed pipe is fixedly connected to a working pipe, and a piston is connected in the working pipe through a pushing mechanism.

[0021] The beneficial effect of adopting the above further scheme is that when formaldehyde detection is performed on building materials on the ground, walls and roof, when the telescopic cover and the first spring are gradually compressed, the roller will also be against the surface of the building material. Then, by pushing the bottom plate, the rubber pad is moved back and forth on the surface of the building material in a small range. At this time, the roller can rotate, and the rotation of the roller drives the rotation of the rotating shaft, and the piston is reciprocated in the working tube through the pushing mechanism and the second reset mechanism. When the piston moves in the direction close to the rotating shaft, negative pressure is generated in the fixed tube. At the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, the air in the telescopic cover enters the fixed tube through the exhaust pipe. When the piston moves in the direction away from the rotating shaft, the air in the fixed tube can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air in the fixed tube is squeezed and enters the hose through the air outlet pipe and is sprayed out through the air blowing pipe in the vicinity of the formaldehyde detector. Not only can the air in the telescopic cover be automatically circulated, but also the air can be brought close to the formaldehyde detector, thereby improving the accuracy of the detection result.

[0022] Furthermore, the second reset mechanism includes a first T-shaped guide rod inserted at the bottom of the U-shaped plate, and the lower end of the first T-shaped guide rod is fixed to the top of the movable frame, the bottom of the U-shaped plate is rotatably connected with a ring, and the ring is sleeved on the side wall of the first T-shaped guide rod, the side wall of the first T-shaped guide rod is sleeved with a second spring, and the two ends of the second spring are respectively fixed to the bottom of the ring and the top of the movable frame.

[0023] The beneficial effect of adopting the above further scheme is that when formaldehyde detection is carried out on building materials on the ground, walls and roof, when the telescopic cover and the first spring are gradually compressed, the rubber protrusion on the roller will also be against the surface of the building material. At the same time, the first T-shaped guide rod moves upward and the second spring is compressed, ensuring that the roller can rotate when the rubber pad moves on the surface of the building material. In addition, the setting of the ring can ensure that the U-shaped plate can rotate freely to adjust the direction of the roller.

[0024] Furthermore, the pushing mechanism includes a pushing rod fixedly connected to the end of the piston, and the other end of the pushing rod is fixedly connected to a moving block, the moving block is connected to the side wall of the fixed tube through a third reset mechanism, and the side wall of the moving block is fixedly connected to the pushing block, the side wall fixing sleeve of the rotating shaft is provided with a fixing ring, and the side wall of the fixing ring is fixedly connected to a plurality of hemispherical blocks arranged in an array.

[0025] The beneficial effect of adopting the above further solution is that the rotation of the roller drives the rotation of the rotating shaft and the fixed ring, and when the hemispherical block abuts against the side wall of the pushing block, the piston is pushed to move through the pushing rod.

[0026] Furthermore, the third reset mechanism includes two symmetrically arranged second T-shaped guide rods fixedly connected to the side walls of the fixed tube, and the moving block is sleeved on the side walls of the second T-shaped guide rods, the side wall fixed sleeve of the second T-shaped guide rod is provided with a retaining ring, and the side wall sleeve of the second T-shaped guide rod is provided with a third spring.

[0027] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the moving block and the piston.

[0028] The present application can not only realize synchronous detection, but also synchronously detect the rate according to the moving speed, and use the driving force of the movement to control the piston to generate negative pressure. At the same time, the negative pressure airflow controls the direction of the airflow through the pipeline mechanical linkage, so as to achieve the effect of precise air extraction and stable speed control, which will be explained in detail in the embodiment combined with the specific implementation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position of the moving mechanism in the present invention; Figure 3 It is a partial cross-sectional structural schematic diagram of the box door, telescopic cover and rubber pad in the present invention; Figure 4 It is a schematic diagram of the position of the circulation mechanism in the present invention; Figure 5 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 6 for Figure 2 A schematic diagram of the enlarged structure at B in the middle; Figure 7 for Figure 3 Schematic diagram of the enlarged structure at C in the middle; Figure 8 for Figure 4 Schematic diagram of the enlarged structure at D in the middle; Fig. 9 for Figure 6 Schematic diagram of the enlarged structure at E in the middle; Fig.10 for Figure 8 Schematic diagram of the enlarged structure at F in the middle.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Bottom plate; 201. First sleeve; 202. First sleeve rod; 203. First threaded tube; 204. First threaded rod; 205. First motor; 301. Rotating ring; 302. Gear ring; 303. Fixed block; 304. Second motor; 305. Gear; 401. First connecting block; 402. Third sleeve rod; 403. Third sleeve; 404. Second connecting block; 405. First spring; 501. Rotating rod; 502. Fourth motor; 601. U-shaped plate; 602. Moving frame; 603. Connecting frame; 604. Fixed tube; 605. Exhaust tube; 606. First one-way valve; 607. Exhaust pipe; 608. Second one-way valve; 609. Blowing tube; 610. Hose; 611. Working tube; 612. Piston; 613. 3. Roller; 614. Rubber protrusion; 615. Rotating shaft; 701. First T-shaped guide rod; 702. Second spring; 703. Ring; 801. Connecting plate; 802. Second set of rods; 803. Second sleeve; 804. Second threaded tube; 805. Second threaded rod; 806. Third motor; 901. Push rod; 902. Push block; 903. Hemispherical block; 904. Fixed ring; 905. Moving block; 1001. Second T-shaped guide rod; 1002. Retaining ring; 1003. Third spring; 11. Universal wheel; 12. Notch; 13. Fixed rod; 14. Rotating plate; 15. Detection box; 16. Box door; 17. Telescopic cover; 18. Rubber pad; 19. Mounting groove; 20. Rotating disk; 21. Groove; 22. Formaldehyde detector. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] The main sources of formaldehyde in building interiors are home decoration materials and board furniture, especially newly decorated rooms with high formaldehyde content, which is the main factor inducing many diseases and is also a recognized carcinogen and environmental pollutant. With the improvement of people's health and environmental protection concepts, after the decoration of a general family is completed, formaldehyde will be detected indoors, and only after the test is qualified can they move in. CN112285299A discloses a new type of environmentally friendly building material formaldehyde detection equipment, including a main shell component, a rear drive assembly, a front steering assembly, and a formaldehyde detection assembly; the main shell component is a structural main body, including a bottom shell and an upper cover; the rear drive assembly is fixedly installed at the rear end of the bottom shell in the main shell component, which can provide power for forward and backward movement; the front steering assembly is fixedly installed at the front end of the bottom shell in the main shell component, which is used to realize automatic steering during movement; the formaldehyde detection assembly is fixedly installed at the detection assembly installation position of the upper cover in the main shell component, and the formaldehyde detection assembly includes four sets of automatically rotating formaldehyde detectors, which can detect gases at different sampling points in the area with higher accuracy, and can move up and down under the drive of the lifting drive motor, and the detection range is wider.

[0033] After in-depth investigation and research on the formaldehyde detection process, the inventor found that the existing formaldehyde detection equipment for building materials is not convenient for fixed-point detection of building materials on the ground, walls and roofs when in use. The detection area is large, which affects the accuracy of the detection results. During the detection, it is easily disturbed by the external environment. At the same time, it is not convenient to circulate the air in the detection area, which will also affect the accuracy of the detection results. In addition, it is not convenient to conduct separate detection of sampled building material samples, and the functionality is poor. In response to this, the inventor proposed a formaldehyde detection method for building materials to solve the above problems.

[0034] The present invention provides the following preferred embodiments like Figure 1-Figure 10 As shown, a formaldehyde detection method for building materials comprises the following steps: S1: Pre-set, prepare the formaldehyde detection equipment, and move it to the indoor of the building to be tested; S2: Detection: after step S1, formaldehyde detection equipment is used to detect formaldehyde in building materials in the building to be tested; The formaldehyde detection device includes a bottom plate 1, a plurality of symmetrically arranged universal wheels 11 are fixedly connected to the bottom of the bottom plate 1, a notch 12 is provided at the top of the bottom plate 1, a fixed rod 13 is connected to the top of the bottom plate 1 through a lifting mechanism, and a rotating plate 14 is connected to the side wall of the fixed rod 13 through a rotating mechanism, a detection box 15 is connected to the bottom of the rotating plate 14 through a moving mechanism, and a box door 16 is provided on the side wall of the detection box 15, a telescopic cover 17 is fixedly connected to the bottom of the detection box 15, and a rubber pad 18 is fixedly connected to the bottom of the telescopic cover 17, and the rubber pad 18 is connected to the side wall of the detection box 15 through a first reset mechanism, and a mounting groove 19 is provided at the bottom of the detection box 15, and the mounting groove 19 A rotating disk 20 is connected to the inside through a flip mechanism, and a groove 21 is opened on the side wall of the rotating disk 20. A formaldehyde detector 22 is fixedly connected to the groove 21, and a circulation mechanism for circulating the air in the telescopic cover 17 is provided at the bottom of the detection box 15, which is convenient for fixed-point detection of building materials on the ground, walls and roof. At the same time, the surface of the building materials to be detected can be covered to avoid interference from the external environment. The air in the telescopic cover 17 can also be automatically circulated and close to the formaldehyde detector 22, thereby improving the accuracy of the test results, and it is convenient to conduct separate detection of the sampled building material samples, so that the functionality is stronger and the detection effect is better.

[0035] In this embodiment, Figure 2 and Figure 6As shown, the lifting mechanism includes a first set of rods 202 fixedly connected to the top of the base plate 1, and the side wall of the first set of rods 202 is sleeved with a first sleeve 201, the upper end of the first sleeve 201 is fixed to the bottom of the fixed rod 13, and the bottom of the fixed rod 13 is fixedly connected with a first threaded tube 203, the first threaded tube 203 is internally threadedly connected with a first threaded rod 204, the lower end of the first threaded rod 204 is rotatably connected to the top of the base plate 1, and the bottom of the base plate 1 is fixedly connected with a first motor 205, the first motor 205 is started, and the rotation of the first motor 205 drives the rotation of the first threaded rod 204, thereby driving the fixed rod 13 and the detection box 15 to be lifted and lowered, thereby facilitating the adjustment of the detection height, and having stronger applicability and more convenient use.

[0036] In this embodiment, Figure 1 and Figure 5 As shown, the rotating mechanism includes a rotating ring 301 rotatably connected to the side wall of the fixed rod 13, and the upper end of the rotating plate 14 is fixed to the side wall of the rotating ring 301, the end of the rotating ring 301 is fixedly connected with a gear ring 302, and the side wall of the fixed rod 13 is fixedly connected with a fixed block 303, the side wall of the fixed block 303 is fixedly connected with a second motor 304, and the output end of the second motor 304 is fixedly connected with a gear 305, the second motor 304 is started, and the rotation of the second motor 304 drives the rotation of the gear 305, thereby driving the gear ring 302 and the rotating ring 301 to rotate, and then driving the rotating plate 14 and the detection box 15 to rotate, so as to facilitate the adjustment of the angle of the detection box 15, which can meet the formaldehyde detection of building materials on the ground, wall and roof, and can adapt to the inclined state of the ground, wall and roof.

[0037] In this embodiment, Figure 6 As shown, the moving mechanism includes a connecting plate 801 fixedly connected to the lower end of the rotating plate 14, and the bottom of the connecting plate 801 is fixedly connected to a second rod 802, the side wall of the second rod 802 is sleeved with a second sleeve 803, and the lower end of the second sleeve 803 is fixed to the top of the detection box 15, the bottom of the connecting plate 801 is rotatably connected to a second threaded rod 805, and the side wall of the second threaded rod 805 is threadedly connected to a second threaded tube 804, the lower end of the second threaded tube 804 is fixed to the top of the detection box 15, and the top of the connecting plate 801 is fixedly connected to a third motor 806, the third motor 806 is started, and the rotation of the third motor 806 drives the rotation of the second threaded rod 805, thereby driving the detection box 15 to move.

[0038] In this embodiment, Fig. 9As shown, the first reset mechanism includes a first connecting block 401 fixedly connected to the side wall of the detection box 15, and the bottom of the first connecting block 401 is fixedly connected to two symmetrically arranged third sleeve rods 402, the side wall of the third sleeve rod 402 is sleeved with a third sleeve 403, and the lower end of the third sleeve 403 is fixedly connected with a second connecting block 404, the second connecting block 404 is fixed to the side wall of the rubber pad 18, and the side wall of the third sleeve 403 is sleeved with a first spring 405. When the rubber pad 18 is in contact with the surface of the building material to be detected, the telescopic cover 17 and the first spring 405 are compressed, so that the surface of the building material to be detected can be covered, and the formaldehyde detector 22 is used to collect and detect the formaldehyde gas in the internal area, which can avoid interference from the external environment and improve the accuracy of the detection result.

[0039] In this embodiment, Figure 7 and Figure 8 As shown, the flipping mechanism includes a fourth motor 502 fixedly connected to the side wall of the detection box 15, the output end of the fourth motor 502 passes through the installation groove 19 and is fixedly connected to the rotating rod 501, and the rotating disk 20 is fixedly sleeved on the side wall of the rotating rod 501. When it is necessary to sample and test the building materials, the sample of the building materials is placed in the detection box 15 and the box door 16 is closed. Then, the fourth motor 502 is started. The rotation of the fourth motor 502 drives the rotation of the rotating rod 501 and the rotating disk 20, so that the formaldehyde detector 22 is flipped upward and is in the detection box 15. At this time, the formaldehyde gas in the internal area of ​​the detection box 15 can be collected and tested through the formaldehyde detector 22, so that the functionality is stronger and the detection effect is better.

[0040] In this embodiment, Figure 7 , Figure 8 and Fig.10As shown, the circulation mechanism includes a U-shaped plate 601 fixedly connected to the bottom of the detection box 15, and the bottom of the U-shaped plate 601 is connected to a U-shaped movable frame 602 through a second reset mechanism, the side wall of the movable frame 602 is rotatably connected to a roller 613 through a rotating shaft 615, and the side wall of the roller 613 is fixedly connected to a plurality of rubber protrusions 614 arranged in an array, the side wall of the movable frame 602 is fixedly connected to a connecting frame 603, and the side wall of the connecting frame 603 is fixedly connected to a fixed pipe 604, the lower end of the fixed pipe 604 is fixedly connected to an exhaust pipe 605, and the exhaust pipe 605 is provided with a first one-way valve 606, and the first one-way valve 606 is fixedly connected to the exhaust pipe 605. The conducting direction of the one-way valve 606 is from the exhaust pipe 605 to the fixed pipe 604, the upper end of the fixed pipe 604 is fixedly connected with an outlet pipe 607, and the outlet pipe 607 is provided with a second one-way valve 608, and the conducting direction of the second one-way valve 608 is from the fixed pipe 604 to the outlet pipe 607, the side wall of the U-shaped plate 601 is fixedly inserted with a blow pipe 609, and a hose 610 is fixedly connected between the outlet pipe 607 and the blow pipe 609, the side wall of the fixed pipe 604 is fixedly connected with a working pipe 611, and a piston 612 is connected to the working pipe 611 through a pushing mechanism, when the building materials on the ground, wall and roof are armored During the aldehyde detection, when the telescopic cover 17 and the first spring 405 are gradually compressed, the roller 613 will also abut against the surface of the building material. Then, by pushing the bottom plate 1, the rubber pad 18 is moved back and forth on the surface of the building material in a small range. At this time, the roller 613 can rotate, and the rotation of the roller 613 drives the rotation of the rotating shaft 615, and the piston 612 is moved back and forth in the working tube 611 through the pushing mechanism and the second reset mechanism. When the piston 612 moves in the direction close to the rotating shaft 615, negative pressure is generated in the fixed tube 604. At the same time, the first one-way valve 606 is opened, and the second one-way valve 60 8 is closed. At this time, the air in the telescopic cover 17 enters the fixed tube 604 through the exhaust pipe 605. When the piston 612 moves away from the rotating shaft 615, the air in the fixed tube 604 can be squeezed. At the same time, the first one-way valve 606 is closed and the second one-way valve 608 is opened. At this time, the air in the fixed tube 604 is squeezed and enters the hose 610 through the air outlet pipe 607 and is sprayed into the vicinity of the formaldehyde detector 22 through the air blowing pipe 609. Not only can the air in the telescopic cover 17 be automatically circulated, but the air can also be brought close to the formaldehyde detector 22, thereby improving the accuracy of the detection result.

[0041] In this embodiment, Figure 8As shown, the second reset mechanism includes a first T-shaped guide rod 701 inserted at the bottom of the U-shaped plate 601, and the lower end of the first T-shaped guide rod 701 is fixed to the top of the mobile frame 602, the bottom of the U-shaped plate 601 is rotatably connected with a ring 703, and the ring 703 is sleeved on the side wall of the first T-shaped guide rod 701, and the side wall of the first T-shaped guide rod 701 is sleeved with a second spring 702, and the two ends of the second spring 702 are respectively fixed to the bottom of the ring 703 and the top of the mobile frame 602, When the roof building materials are tested for formaldehyde, when the telescopic cover 17 and the first spring 405 are gradually compressed, the rubber protrusion 614 on the roller 613 will also be against the surface of the building material. At the same time, the first T-shaped guide rod 701 moves upward, and the second spring 702 is compressed to ensure that the roller 613 can rotate when the rubber pad 18 moves on the surface of the building material. In addition, the setting of the ring 703 can ensure that the U-shaped plate 601 can rotate freely to adjust the direction of the roller 613.

[0042] In this embodiment, Figure 8 and Fig.10 As shown, the pushing mechanism includes a pushing rod 901 fixedly connected to the end of the piston 612, and the other end of the pushing rod 901 is fixedly connected to a moving block 905, the moving block 905 is connected to the side wall of the fixed tube 604 through a third reset mechanism, and the side wall of the moving block 905 is fixedly connected to a pushing block 902, the side wall of the rotating shaft 615 is fixedly sleeved with a fixing ring 904, and the side wall of the fixing ring 904 is fixedly connected to a plurality of hemispherical blocks 903 arranged in an array, the rotation of the roller 613 drives the rotation of the rotating shaft 615 and the fixing ring 904, and when the hemispherical block 903 abuts against the side wall of the pushing block 902, the piston 612 is pushed to move through the pushing rod 901.

[0043] In this embodiment, Fig.10 As shown, the third reset mechanism includes two symmetrically arranged second T-shaped guide rods 1001 fixedly connected to the side wall of the fixed tube 604, and the moving block 905 is sleeved on the side wall of the second T-shaped guide rod 1001, the side wall of the second T-shaped guide rod 1001 is fixedly sleeved with a retaining ring 1002, and the side wall of the second T-shaped guide rod 1001 is sleeved with a third spring 1003, which plays a guiding and resetting role for the movement of the moving block 905 and the piston 612.

[0044] The specific method of use of the present invention is as follows: When in use, first, when it is necessary to perform formaldehyde detection on indoor building materials, the bottom plate 1 is moved indoors, and then the second motor 304 is started. The rotation of the second motor 304 drives the rotation of the gear 305, thereby driving the gear ring 302 and the rotating ring 301 to rotate, and then driving the rotating plate 14 and the detection box 15 to rotate, so as to facilitate the adjustment of the angle of the detection box 15, which can meet the formaldehyde detection of building materials on the ground, wall and roof. Then, the first motor 205 is started. The rotation of the first motor 205 drives the rotation of the first threaded rod 204, and then drives the fixed rod 13 and the detection box 15 to rise and fall, so as to facilitate the adjustment of the detection height, which is more applicable and more convenient to use. After the adjustment is completed, the third motor 806 is started, and the rotation of the third motor 806 drives the rotation of the second threaded rod 805, thereby driving the detection box 15 to move. When the rubber pad 18 is against the surface of the building material to be detected, the telescopic cover 17 and the first spring 405 are compressed, so that the surface of the building material to be detected can be covered, and the formaldehyde detector 22 is used to collect and detect the formaldehyde gas in the internal area, which can avoid interference from the external environment and improve the accuracy of the detection result. When the formaldehyde detection is performed on the building materials of the ground, wall and roof, when the telescopic cover 17 and the first spring 405 are gradually compressed, the rubber protrusion 614 on the roller 613 will also abut against the surface of the building material, and at the same time, the first T-shaped guide rod 701 moves upward, and the second spring 702 is compressed. Then, by pushing the bottom plate 1, the rubber pad 18 is reciprocated on the surface of the building material in a small range. At this time, the roller 613 can rotate, and the rotation of the roller 613 drives the rotation of the rotating shaft 615 and the fixing ring 904. When the hemispherical block 903 abuts against the side wall of the pushing block 902, the piston 612 is pushed to move by the pushing rod 901. At the same time, the third spring 1003 is compressed. When the hemispherical block 903 passes over the side wall of the pushing block 902, the piston 612 can move and reset under the action of the third spring 1003. In this way, the piston 612 can reciprocate in the working tube 611. When the piston 612 moves toward the direction approaching the rotating shaft 615, negative pressure is generated in the fixed pipe 604. At the same time, the first one-way valve 606 is opened and the second one-way valve 608 is closed. At this time, the air in the telescopic cover 17 enters the fixed pipe 604 through the exhaust pipe 605. When the piston 612 moves toward the direction away from the rotating shaft 615, the air in the fixed pipe 604 can be squeezed. At the same time, the first one-way valve 606 is closed and the second one-way valve 608 is opened. At this time, the air in the fixed pipe 604 is squeezed and enters the hose 610 through the air outlet pipe 607 and is sprayed into the vicinity of the formaldehyde detector 22 through the air blowing pipe 609. Not only can the air in the telescopic cover 17 be automatically circulated, but the air can also be brought close to the formaldehyde detector 22, thereby improving the accuracy of the detection result. Furthermore, when it is necessary to sample and test the building materials, the sample of the building materials is placed in the test box 15 and the box door 16 is closed. Then, the fourth motor 502 is started. The rotation of the fourth motor 502 drives the rotating rod 501 and the rotating disk 20 to rotate, thereby flipping the formaldehyde detector 22 upward and placing it in the test box 15. At this time, the formaldehyde gas in the internal area of ​​the test box 15 can be collected and tested through the formaldehyde detector 22, making it more functional and having a better test effect.

[0045] In summary: The beneficial effects of the present invention are specifically embodied in that it is convenient to carry out fixed-point detection of building materials on the ground, walls and roof. At the same time, the surface of the building materials to be detected can be covered to avoid interference from the external environment. The air in the telescopic cover 17 can be automatically circulated and close to the formaldehyde detector 22, thereby improving the accuracy of the test results. In addition, it is convenient to carry out separate detection of sampled building material samples, making the functionality stronger and the detection effect better.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A formaldehyde detection method for building materials, characterized in that: The following steps are involved: S1: Pre-set, prepare the formaldehyde detection equipment, and move it to the indoor of the building to be tested; S2: Detection: after step S1, formaldehyde detection equipment is used to detect formaldehyde in building materials in the building to be tested; The formaldehyde detection device comprises a bottom plate (1), the bottom of the bottom plate (1) is fixedly connected to a plurality of symmetrically arranged universal wheels (11), and the top of the bottom plate (1) is provided with a notch (12), the top of the bottom plate (1) is connected to a fixed rod (13) via a lifting mechanism, and the side wall of the fixed rod (13) is connected to a rotating plate (14) via a rotating mechanism, the bottom of the rotating plate (14) is connected to a detection box (15) via a moving mechanism, and the side wall of the detection box (15) is provided with a box door (16), the bottom of the detection box (15) is fixedly connected to a telescopic cover (17), the bottom of the telescopic cover (17) is fixedly connected to a rubber pad (18), and the bottom of the detection box (15) is provided with a circulation mechanism for circulating air in the telescopic cover (17).

2. A formaldehyde detection method for building materials according to claim 1, characterized in that: The rubber pad (18) is connected to the side wall of the detection box (15) via a first reset mechanism, and a mounting groove (19) is provided at the bottom of the detection box (15), a rotating disk (20) is connected to the mounting groove (19) via a flip mechanism, and a groove (21) is provided on the side wall of the rotating disk (20), and a formaldehyde detector (22) is fixedly connected to the groove (21).

3. The formaldehyde detection method for building materials according to claim 2, characterized in that: The lifting mechanism comprises a first set of rods (202) fixedly connected to the top of the bottom plate (1), and a first sleeve (201) is sleeved on the side wall of the first set of rods (202), the upper end of the first sleeve (201) is fixed to the bottom of the fixed rod (13), and the bottom of the fixed rod (13) is fixedly connected to a first threaded tube (203).

4. A formaldehyde detection method for building materials according to claim 3, characterized in that: The first threaded tube (203) is internally threadedly connected to a first threaded rod (204); the lower end of the first threaded rod (204) is rotatably connected to the top of the bottom plate (1), and the bottom of the bottom plate (1) is fixedly connected to a first motor (205); the rotating mechanism comprises a rotating ring (301) rotatably connected to a side wall of the fixed rod (13); the upper end of the rotating plate (14) is fixed to the side wall of the rotating ring (301); the end of the rotating ring (301) is fixedly connected to a gear ring (302); the side wall of the fixed rod (13) is fixedly connected to a fixed block (303); the side wall of the fixed block (303) is fixedly connected to a second motor (304); The output end of the second motor (304) is fixedly connected to a gear (305); the moving mechanism comprises a connecting plate (801) fixedly connected to the lower end of the rotating plate (14); the bottom of the connecting plate (801) is fixedly connected to a second sleeve rod (802); the side wall of the second sleeve rod (802) is sleeved with a second sleeve tube (803); the lower end of the second sleeve tube (803) is fixed to the top of the detection box (15); the bottom of the connecting plate (801) is rotatably connected to a second threaded rod (805); the side wall of the second threaded rod (805) is threadedly connected to a second threaded tube (804); the lower end of the second threaded tube (804) is fixed to the detection box (15); ), and the top of the connecting plate (801) is fixedly connected to a third motor (806); the circulation mechanism comprises a U-shaped plate (601) fixedly connected to the bottom of the detection box (15), and the bottom of the U-shaped plate (601) is connected to a U-shaped movable frame (602) via a second reset mechanism, the side wall of the movable frame (602) is rotatably connected to a roller (613) via a rotating shaft (615), and the side wall of the roller (613) is fixedly connected to a plurality of rubber protrusions (614) arranged in an array, the side wall of the movable frame (602) is fixedly connected to the connecting frame (603), and the side wall of the connecting frame (603) is fixedly connected to a fixed tube (614). 04), the lower end of the fixed tube (604) is fixedly connected to an exhaust pipe (605), and a first one-way valve (606) is arranged in the exhaust pipe (605); the upper end of the fixed tube (604) is fixedly connected to an outlet pipe (607), and a second one-way valve (608) is arranged in the outlet pipe (607); a blow pipe (609) is fixedly inserted into the side wall of the U-shaped plate (601), and a hose (610) is fixedly connected between the outlet pipe (607) and the blow pipe (609); the side wall of the fixed tube (604) is fixedly connected to a working pipe (611), and a piston (612) is connected in the working pipe (611) via a pushing mechanism;The second reset mechanism comprises a first T-shaped guide rod (701) inserted at the bottom of the U-shaped plate (601), and the lower end of the first T-shaped guide rod (701) is fixed to the top of the movable frame (602), the bottom of the U-shaped plate (601) is rotatably connected with a circular ring (703), and the circular ring (703) is sleeved on the side wall of the first T-shaped guide rod (701), and the side wall of the first T-shaped guide rod (701) is sleeved with a second spring (702), and the two ends of the second spring (702) are respectively fixed to the bottom of the circular ring (703) and the top of the movable frame (602). ; 5. The formaldehyde detection method for building materials according to claim 4, characterized in that: The first reset mechanism comprises a first connection block (401) fixedly connected to the side wall of the detection box (15), and the bottom of the first connection block (401) is fixedly connected to two symmetrically arranged third sleeve rods (402), the side wall of the third sleeve rod (402) is sleeved with a third sleeve tube (403), and the lower end of the third sleeve tube (403) is fixedly connected to a second connection block (404), the second connection block (404) is fixed to the side wall of the rubber pad (18), and the side wall of the third sleeve tube (403) is sleeved with a first spring (405).

6. A formaldehyde detection method for building materials according to claim 4, characterized in that: The turning mechanism comprises a fourth motor (502) fixedly connected to the side wall of the detection box (15); an output end of the fourth motor (502) penetrates into the mounting groove (19) and is fixedly connected to the rotating rod (501); and the rotating disk (20) is fixedly sleeved on the side wall of the rotating rod (501).

7. A formaldehyde detection method for building materials according to claim 4, characterized in that: The pushing mechanism comprises a pushing rod (901) fixedly connected to the end of the piston (612), and the other end of the pushing rod (901) is fixedly connected to a moving block (905).

8. The formaldehyde detection method for building materials according to claim 7, characterized in that: The moving block (905) is connected to the side wall of the fixed tube (604) via a third reset mechanism, and the side wall of the moving block (905) is fixedly connected to a push block (902), the side wall of the rotating shaft (615) is fixedly sleeved with a fixing ring (904), and the side wall of the fixing ring (904) is fixedly connected to a plurality of hemispherical blocks (903) arranged in an array.

9. A formaldehyde detection method for building materials according to claim 8, characterized in that: The third resetting mechanism comprises two symmetrically arranged second T-shaped guide rods (1001) fixedly connected to the side wall of the fixed tube (604), and the moving block (905) is sleeved on the side wall of the second T-shaped guide rods (1001).

10. A formaldehyde detection method for building materials according to claim 9, characterized in that: The side wall fixing sleeve of the second T-shaped guide rod (1001) is provided with a retaining ring (1002), and the side wall sleeve of the second T-shaped guide rod (1001) is provided with a third spring (1003).

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