Formaldehyde adsorption treatment device and control method

Abstract

The invention discloses a formaldehyde adsorption treatment device and a control method, and relates to the technical field of formaldehyde adsorption treatment.The formaldehyde adsorption treatment device comprises a machine body assembly and further comprises a treatment pipe, the treatment pipe is fixedly installed in the machine body assembly, and a catalytic device is installed at the bottom in the treatment pipe and used for adsorbing and decomposing formaldehyde in outside air; the air inlet assembly is arranged on the side face of the treatment pipe and used for controlling the amount of air entering the treatment pipe by adjusting the ventilation amount of the air inlet hole and the ventilation hole in a matched mode; the adsorption layer is clamped in the treatment pipe, an exhaust funnel is slidably connected in the adsorption layer, and the height of the exhaust funnel in the adsorption layer is adjusted according to the concentration of formaldehyde in exhausted air; the heating assembly is arranged at the top of the air inlet assembly and used for filtering solid impurities and water vapor mixed in outside air, detecting the concentration of formaldehyde in exhausted air, adjusting the height of the adsorption layer, controlling the air inlet amount of the air inlet assembly and the condition that the heat generator exhausts the heat medium, and conducting dynamic regulation and control along with the change of the concentration of the formaldehyde in the outside air.

Description

Technical Field

[0001] This invention relates to the field of formaldehyde adsorption treatment technology, and in particular to a formaldehyde adsorption treatment device and control method. Background Technology

[0002] Formaldehyde is a strong irritant to the eyes, nose, and throat, causing discomfort such as headaches, nausea, and dizziness. Formaldehyde adsorption treatment devices are air purification equipment designed for formaldehyde pollutants in indoor or industrial environments. The essence of formaldehyde adsorption treatment devices is to capture and fix formaldehyde in the air onto adsorption materials, or to catalytically decompose it into harmless substances, thereby reducing the concentration of formaldehyde in the air. By utilizing the large surface area and van der Waals forces of porous adsorption materials such as activated carbon, formaldehyde molecules are captured in the pores, and through chemical modification or loading catalysts, formaldehyde undergoes a chemical reaction to be converted into harmless substances such as water and carbon dioxide.

[0003] CN120285733A discloses a formaldehyde adsorption treatment device for building construction, including an outer cover. A front cover is installed at the front end of the outer cover, and a spring that extends rearward into the outer cover is installed inside the front cover. Interconnected assembly holes are opened on both sides of the outer cover, and bearings are installed in the two assembly holes. A rotating shaft is fixed between the two bearings, and a self-adjusting wheel is installed on the rotating shaft. The self-adjusting wheel is located behind the self-adjusting plate and forms a loading space with the self-adjusting plate.

[0004] The above-mentioned technical solutions have some problems in use. For example, the existing adsorption layer adopts a columnar structure and uses an air-to-air method for formaldehyde adsorption. The air often rises and is discharged from the surface of the adsorption layer, causing the surface of the adsorption layer to become saturated before the interior after a long period of use, which affects the subsequent formaldehyde adsorption effect and the service life of the adsorption layer.

[0005] Furthermore, when the formaldehyde concentration in the outside air changes, the amount of formaldehyde adsorbed per unit time remains constant. This results in poor adsorption of formaldehyde by the adsorption layer, making it difficult to efficiently treat formaldehyde in the outside air. Moreover, if the adsorption layer is not fully utilized, it will increase the path of air circulation in the adsorption layer, leading to a lower adsorption rate of formaldehyde in the outside air and making it difficult to adsorb formaldehyde molecules in the outside air in a timely manner.

[0006] After prolonged use, the lower adsorption layer comes into contact with a higher concentration of formaldehyde for an extended period, causing the adsorption layer to gradually become saturated and ineffective from bottom to top, thus preventing the timely adsorption of formaldehyde.

[0007] When the height of the adsorption layer is increased, the path of outside air in the adsorption layer increases continuously. The air cannot completely fill the gaps inside the adsorption layer for adsorption, resulting in a low utilization rate of the adsorption layer. High concentrations of formaldehyde in the outside air cannot be quickly adsorbed and treated. On the other hand, when the height of the adsorption layer is reduced, a relatively large amount of air entering the adsorption layer may be discharged before complete adsorption.

[0008] Meanwhile, when outside air enters the treatment pipe, it may be accompanied by some solid impurities and water vapor. This can cause some solid impurities to block the inside of the adsorption layer, while water vapor entering the adsorption layer may occupy some formaldehyde sites, reducing the formaldehyde adsorption efficiency. In fact, under high humidity for a long time, the adsorption layer may clump together and its expansion capacity may decrease, causing deformation and making it impossible to accurately control the height of the adsorption layer.

[0009] Formaldehyde adsorption devices can become damaged after prolonged use, causing formaldehyde in the air to flow and affecting the adsorption effect. Manually replacing the adsorption layer is difficult and inefficient, and cannot guarantee the complete and effective adsorption and removal of formaldehyde.

[0010] Therefore, it is necessary to invent a formaldehyde adsorption treatment device and control method to solve the above problems. Summary of the Invention

[0011] The purpose of this invention is to provide a formaldehyde adsorption treatment device and control method to solve the problems mentioned in the background art.

[0012] To achieve the above objectives, the present invention provides the following technical solution: a formaldehyde adsorption treatment device, comprising a body assembly, and further comprising: a treatment tube, which is fixedly installed inside the body assembly, the treatment tube having an air inlet for adsorbing and decomposing formaldehyde in the outside air; an air inlet assembly, disposed on the side of the treatment tube, for adjusting the amount of air entering the treatment tube and filtering water vapor, comprising a sleeve, the sleeve having a vent hole inside, the sleeve moving downwards increasing the overlapping area of ​​the air inlet and the vent hole, thereby increasing the amount of air entering the treatment tube; an adsorption layer, snapped into the inside of the treatment tube, with an exhaust pipe slidably connected inside, increasing the concentration of formaldehyde discharged, and increasing the height of the exhaust pipe inside the adsorption layer; and a heating assembly, disposed at the top of the air inlet assembly, the amount of heat medium entering the sleeve by the heating assembly increasing when the sleeve moves downwards.

[0013] Preferably, it further includes: a support component disposed at the bottom of the air intake component, including a base and a push block, the push block moving inside the base and adjusting the overlapping area of ​​the air intake hole and the vent hole; and a connecting component disposed inside the adsorption layer, including an elastic sleeve and a bellows, the elastic sleeve and the bellows moving with the exhaust pipe and isolating the adsorption layer.

[0014] Preferably, it further includes: a detection component, which is fixedly installed at the outlet end of the treatment pipe to monitor and provide feedback on the formaldehyde concentration in the air discharged from the treatment pipe in real time; the adsorption layer material is activated carbon and has a ring structure, a support plate is fixedly connected to the bottom of the adsorption layer to support and block the bottom of the adsorption layer, a reset component is fixedly connected between the bottom of the treatment pipe and the bottom of the support plate, the inner wall of the adsorption layer is sealed and slidably connected to the outer surface of the exhaust pipe, and multiple ventilation holes are evenly opened on the side wall of the exhaust pipe for the air adsorbed inside the adsorption layer to be discharged.

[0015] Preferably, the body assembly includes: a housing with an air inlet on its side, a sleeve inner wall that is slidably connected to the surface of the treatment pipe and corresponds to the position of the air inlet, an air outlet on its top, and a partition fixedly connected inside; and a fan that is fixedly installed at the air outlet position. The fan draws in outside air, which enters the housing through the air inlet, and after being adsorbed by the treatment pipe and adsorption layer, it passes through the partition and is discharged at the air outlet.

[0016] Preferably, the heating assembly includes: a heat generator, which is fixedly connected to the side wall of the processing tube for generating a heat medium, and the output end of the heat generator is slidably connected to the top of the sleeve; a conical rod, which is fixedly connected to the bottom of the heat generator, and the diameter of the conical rod gradually increases from bottom to top; and an interface, which is opened at the inner top of the sleeve, and the conical rod is movably connected inside the interface. When the sleeve moves downward, the diameter of the conical rod inside the interface decreases, and the amount of heat medium entering the inner cavity of the sleeve per unit time increases.

[0017] Preferably, the support assembly further includes: a flexible tube, the output end of which communicates with the interior of the base, and the input end which passes through the support plate and communicates with the interior of the corrugated pipe, wherein compressed gas is discharged into the interior of the base through the corrugated pipe and drives the push block to move upward inside the base; the base is fixed to the side of the processing tube, the push block is slidably connected to the inner wall of the base, and the top of the push block is fixedly connected to the bottom of the sleeve, and an elastic block is fixedly connected between the bottom of the push block and the bottom of the base, wherein the movement of the push block drives the movement of the sleeve.

[0018] Preferably, the connecting assembly further includes: an exhaust port, which is opened at the top of the processing tube and connects to the top of the partition; the elastic sleeve and the corrugated pipe are both located inside the adsorption layer, and the two ends of the elastic sleeve are respectively connected to the top air outlet of the exhaust pipe and the exhaust port, and the two ends of the corrugated pipe are respectively connected to the bottom of the exhaust pipe and the top of the support plate.

[0019] Preferably, the connecting assembly further includes: a telescopic rod, which is fixedly installed on the inner top of the treatment pipe, and the telescopic end of the telescopic rod is fixedly installed on the top of the exhaust pipe, for driving the exhaust pipe to move inside the adsorption layer to adjust the height of the exhaust pipe intake; a thermal retaining ring, which is fixedly connected to the inner upper part of the adsorption layer, and a catalytic device is installed at the bottom of the treatment pipe. When the temperature reaches its maximum value, the thermal retaining ring expands and cooperates with the protrusion on the side wall of the exhaust pipe, and the telescopic rod drives the exhaust pipe to move the adsorption layer to the corresponding position of the catalytic device to decompose formaldehyde.

[0020] The control method for the formaldehyde adsorption treatment device includes the following steps: S1. Outside air continuously enters the processing pipe inside the machine components and passes through the adsorption layer in the processing pipe to adsorb formaldehyde. Then, it flows out of the processing pipe along the exhaust pipe inside the adsorption layer and is discharged to the outside of the machine components. S2. When the formaldehyde concentration in the exhaust air detected by the detection component exceeds the preset value, the exhaust pipe moves upward inside the adsorption layer. The exhaust pipe drives the sleeve to move downward along the outer surface of the treatment pipe through the support component. The overlapping area of ​​the air inlet and the vent increases, and the air intake in the treatment pipe and the adsorption layer increases. S3. When the sleeve moves downward along the outer surface of the processing tube, the amount of heat medium introduced into the sleeve by the heating component increases, and the temperature of the air entering the processing tube rises. S4. When the exhaust stack moves upward to its maximum value inside the adsorption layer, the formaldehyde concentration in the exhaust air detected by the detection component still exceeds the preset value. The amount of heat medium entering the sleeve of the heating component reaches its maximum value. The exhaust stack is connected to the adsorption layer through the connecting component and drives the adsorption layer to move downward inside the treatment tube. The heating component heats the adsorption layer at high temperature to desorb it.

[0021] The technical effects and advantages of this invention are as follows: 1. This invention uses a ring-shaped adsorption layer and an external-in, internal-out method to adsorb formaldehyde from the outside air, preventing air from rising and being discharged from the surface of the adsorption layer. This allows the adsorption layer to be used evenly for formaldehyde adsorption, ensuring the subsequent formaldehyde adsorption effect and extending the service life of the adsorption layer. At the same time, the height of the adsorption layer can be adjusted according to the formaldehyde concentration in the outside air, so that formaldehyde can be fully adsorbed and removed, and the formaldehyde in the outside air can be treated with high efficiency.

[0022] 2. When the height of the adsorption layer is changed by moving the exhaust pipe, the overlapping area of ​​the vent hole on the sleeve and the air inlet on the treatment pipe changes. The height of the adsorption layer is positively correlated with the overlapping area of ​​the vent hole and the air inlet. Air always completely fills the gaps inside the adsorption layer for adsorption, improving the utilization rate of the adsorption layer and ensuring the rapid adsorption and treatment of high concentrations of formaldehyde in the outside air.

[0023] 3. In this invention, as the pusher and sleeve move, the overlapping area of ​​the interface and the conical rod changes, the outside air entering the treatment tube is heated to remove moisture, thus avoiding moisture affecting the adsorption layer. Moreover, the high-temperature air passes through the adsorption layer, ensuring the efficiency of high-concentration formaldehyde contact and adsorption with the adsorption layer. Adaptive adjustment saves energy while ensuring the formaldehyde adsorption effect.

[0024] 4. This invention uses an upper adsorption layer to compensate for the height of the lower adsorption layer that has failed, so as to avoid the formaldehyde concentration in the air discharged from the treatment pipe exceeding the preset value due to the saturation and failure of part of the adsorption layer. This ensures that the formaldehyde is fully adsorbed. When the formaldehyde concentration in the air discharged from the treatment pipe is still much higher than the preset value when the exhaust pipe reaches the highest position, the formaldehyde in the saturated adsorption layer is catalytically decomposed, and the adsorption layer is reused after removing the formaldehyde.

[0025] 5. In this invention, the formaldehyde concentration in the exhaust air is accurately detected, thereby providing feedback to adjust the height of the adsorption layer. At the same time, the air intake volume of the intake component and the heat medium discharged by the heat generator are controlled and adjusted. All links work together to dynamically regulate the formaldehyde concentration in the outside air, ensuring that formaldehyde can be efficiently and fully adsorbed and catalytically decomposed. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the body component structure of the present invention; Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the overall internal structure of the present invention; Figure 5 This is a schematic diagram of the adsorption layer structure of the present invention; Figure 6 This is a schematic diagram of the intake assembly structure of the present invention; Figure 7 This is a schematic diagram of the connection component structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the support component structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B.

[0027] In the diagram: 1. Body assembly; 101. Housing; 102. Air inlet; 103. Air outlet; 104. Partition; 105. Fan; 2. Processing pipe; 3. Catalytic device; 4. Air intake assembly; 401. Air inlet; 402. Sleeve; 403. Vent; 5. Adsorption layer; 6. Exhaust stack; 7. Heating assembly; 701. Heat generator; 702. Conical rod; 703. Interface; 8. Support assembly; 801. Base; 802. Push block; 803. Flexible hose; 9. Connecting assembly; 901. Elastic sleeve; 902. Exhaust port; 903. Telescopic rod; 904. Thermal retaining ring; 905. Corrugated pipe; 10. Detection assembly. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1 A formaldehyde adsorption treatment device and control method are disclosed. During use, an adsorption layer 5 adsorbs and removes formaldehyde mixed in the outside air to ensure that the formaldehyde concentration in the discharged air meets the standards. However, the existing adsorption layer 5 uses a columnar structure with air entering from the bottom and exiting from the top for formaldehyde adsorption. Air often rises and exits from the surface of the adsorption layer 5, causing the surface of the adsorption layer 5 to saturate before the interior after prolonged use, affecting the subsequent formaldehyde adsorption effect and the service life of the adsorption layer 5. At the same time, the formaldehyde adsorbed by the adsorption layer 5 in the circulating air per unit time is a fixed value. When the formaldehyde concentration in the outside air increases, the formaldehyde concentration in the air adsorbed and discharged by the adsorption layer 5 exceeds the standard, resulting in poor adsorption effect of the adsorption layer 5 and difficulty in efficiently treating formaldehyde in the outside air. When the formaldehyde concentration in the outside air decreases, the adsorption layer 5 cannot fully utilize the formaldehyde it adsorbs. Furthermore, the incomplete use of the adsorption layer 5 increases the air travel distance in the adsorption layer 5. Since the speed of the fan 105 is controlled by the external setting and remains constant, the adsorption rate of formaldehyde in the outside air is low, making it difficult to adsorb formaldehyde molecules in the outside air in time and reduce the formaldehyde concentration.

[0030] This invention provides, for example Figures 1 to 5The formaldehyde adsorption treatment device shown includes: a body assembly 1, which includes a housing 101 with an air inlet 102 on its side, a sleeve 402 whose inner wall is slidably connected to the surface of the treatment tube 2 and corresponds to the position of the air inlet 102, an air outlet 103 on its top, and a partition 104 fixedly connected inside; and a fan 105, which is fixedly installed at the air outlet 103. The fan 105 draws in outside air through the air inlet 102 into the housing 101, and after adsorbing formaldehyde through the treatment tube 2 and the adsorption layer 5, it passes through the partition 104 and is discharged through the air outlet 103. The air enters the housing 101 through the air inlet 102 and enters the adsorption layer 5 of the treatment tube 2 under the suction force of the fan 105. The adsorption layer 5 captures and fixes the formaldehyde mixed in the outside air passing inside.

[0031] The treatment tube 2 is fixedly installed inside the body component 1. The treatment tube 2 has an air inlet 401 inside, which is used to adsorb and decompose formaldehyde in the outside air. The adsorption layer 5 is snapped into the inside of the treatment tube 2. An exhaust pipe 6 is slidably connected inside the layer. As the concentration of formaldehyde discharged increases, the height of the exhaust pipe 6 inside the adsorption layer 5 increases. The air after adsorbing formaldehyde passes through the elastic sleeve 901 at the top of the exhaust pipe 6 and is discharged above the partition plate 104 through the exhaust hole 902 at the top of the treatment tube 2.

[0032] The detection component 10 is fixedly installed at the outlet end of the treatment pipe 2 to monitor and provide feedback on the formaldehyde concentration of the air discharged from the treatment pipe 2 in real time. The detection component 10 at the exhaust port 902 at the top of the treatment pipe 2 detects the formaldehyde concentration in the air discharged from the treatment pipe 2. The adsorption layer 5 is made of activated carbon and has a ring structure. A support plate is fixedly connected to the bottom of the adsorption layer 5 to support and block the bottom of the adsorption layer 5. A reset component is fixedly connected between the bottom of the treatment pipe 2 and the bottom of the support plate. The inner wall of the adsorption layer 5 is sealed and slidably connected to the outer surface of the exhaust pipe 6. Multiple ventilation holes 403 are evenly opened on the side wall of the exhaust pipe 6 for the air adsorbed inside the adsorption layer 5 to be discharged.

[0033] The connecting component 9, located inside the adsorption layer 5, includes an elastic sleeve 901 and a corrugated pipe 905. The elastic sleeve 901 and the corrugated pipe 905 move with the exhaust pipe 6 and isolate the adsorption layer 5. The connecting component 9 also includes an exhaust hole 902, which is opened at the top of the processing pipe 2 and connects to the top of the partition plate 104. The elastic sleeve 901 and the corrugated pipe 905 are both located inside the adsorption layer 5, and the two ends of the elastic sleeve 901 are respectively connected to the top air outlet of the exhaust pipe 6 and the exhaust hole 902. The two ends of the corrugated pipe 905 are respectively connected to the bottom of the exhaust pipe 6 and the top of the support plate. The elastic sleeve 901 and the corrugated pipe 905 isolate the adsorption layer 5, and the concentration of the adsorption layer 5 entering the processing pipe 2 can only be discharged through the exhaust pipe 6. The telescopic rod 903 is fixedly installed inside the top of the processing pipe 2, and the telescopic end of the telescopic rod 903 is fixedly installed with the top of the exhaust pipe 6. It is used to drive the exhaust pipe 6 to move inside the adsorption layer 5 to adjust the air intake height of the exhaust pipe 6. Activating the telescopic rod 903 drives the exhaust pipe 6, whose telescopic end is fixed, to move and adjust the height.

[0034] In use, the fan 105 is activated to extract and adsorb formaldehyde. Air enters the interior of the chamber 101 through the air inlet 102. The air is located below the partition 104 inside the chamber 101. Under the suction force of the fan 105, the air enters the treatment pipe 2 through the air inlet 401 and then enters the adsorption layer 5 of the treatment pipe 2. The adsorption layer 5 captures and fixes the formaldehyde mixed in the outside air passing inside. Utilizing the large surface area and porous characteristics of the activated carbon material adsorption layer 5, formaldehyde molecules are captured in the pores of the adsorption layer 5, thereby ensuring the removal efficiency of formaldehyde from the outside air. The adsorption layer 5 continuously adsorbs formaldehyde, which can significantly reduce the formaldehyde concentration in the enclosed space in a short time, quickly improve air quality, and become an effective tool for controlling formaldehyde pollution and ensuring air safety.

[0035] The adsorption layer 5 is annular and located inside the treatment pipe 2, while the exhaust pipe 6 is located inside the adsorption layer 5. This allows the air entering the treatment pipe 2 to pass through the adsorption layer 5 and rise within it. The adsorption layer 5 uses an external-in, internal-out method to adsorb formaldehyde from the outside air, preventing the air from rising and escaping from the surface of the adsorption layer 5 and causing the surface of the adsorption layer 5 to saturate before the interior after prolonged use, which would affect the subsequent formaldehyde adsorption effect and the service life of the adsorption layer 5. After formaldehyde adsorption in the adsorption layer 5, the air enters the exhaust pipe 6 inside the adsorption layer 5. The air after adsorbing formaldehyde passes through the elastic sleeve 901 at the top of the exhaust pipe 6 and is discharged above the partition 104 through the exhaust hole 902 at the top of the treatment pipe 2. The air above the partition 104 is then discharged into the outside air through the air outlet 103 under the action of the fan 105. The air mixed with formaldehyde continues to undergo the above process.

[0036] The formaldehyde concentration in the air discharged from the treatment pipe 2 is detected by the detection component 10 located at the exhaust port 902 at the top of the treatment pipe 2. When the detection component 10 detects that the formaldehyde concentration in the discharged air exceeds the preset value, that is, the formaldehyde concentration in the outside air increases, the telescopic rod 903 is activated to drive the exhaust pipe 6 fixed at the telescopic end to move upward. Since the elastic sleeve 901 and the corrugated pipe 905 isolate the adsorption layer 5, the concentration of the adsorption layer 5 entering the treatment pipe 2 can only be discharged through the exhaust pipe 6. When the exhaust pipe 6 moves upward, the height of the air entering the treatment pipe 2 passing through the adsorption layer 5 increases, thereby increasing the amount of formaldehyde adsorbed by the adsorption layer 5 per unit time, ensuring that the formaldehyde content in the discharged air is qualified.

[0037] When the formaldehyde concentration in the exhaust air is detected to be lower than the preset value, that is, the formaldehyde concentration in the outside air decreases, the telescopic rod 903 is activated to drive the exhaust pipe 6 fixed at the telescopic end to move downward. The height of the air entering the treatment pipe 2 through the adsorption layer 5 is reduced, thereby reducing the amount of formaldehyde adsorbed by the adsorption layer 5 per unit time. This avoids the adsorption layer 5 not being fully utilized when adsorbing formaldehyde in the outside air, which would increase the air travel distance in the adsorption layer 5 and further lead to a lower adsorption rate of formaldehyde in the outside air. By adaptively adjusting the height of the adsorption layer 5 according to the formaldehyde concentration in the outside air, the formaldehyde can be fully adsorbed and removed, while ensuring that the formaldehyde in the outside air can be treated efficiently.

[0038] Example 2 Based on the above embodiments, formaldehyde adsorption is performed by using a bottom-in, top-out air intake method in the adsorption layer 5. When the adsorption layer 5 adsorbs formaldehyde from the outside air, as the outside air rises within the adsorption layer 5 and is adsorbed by the layer, the formaldehyde concentration gradually decreases until it meets the acceptable level before being discharged. However, after prolonged use, the lower adsorption layer 5, due to its longer contact with the higher concentration of formaldehyde compared to the upper adsorption layer 5, gradually becomes saturated and ineffective from bottom to top. Consequently, it gradually fails to purify the formaldehyde in the air to a acceptable level for discharge, preventing timely adsorption treatment of formaldehyde. When the exhaust pipe 6 is gradually moved upwards to increase the working height of the adsorption layer 5, the path of outside air flowing through the adsorption layer 5 continuously increases. The amount of outside air conducted through the fixed-area air inlet 401 is constant, and the air cannot completely fill the internal gaps of the adsorption layer 5 for adsorption, resulting in low utilization of the adsorption layer 5. High concentrations of formaldehyde in the outside air cannot be quickly adsorbed and treated. As the exhaust pipe 6 is gradually moved downwards... When the height of the adsorption layer 5 is reduced, a relatively large amount of air entering the adsorption layer 5 may not be completely adsorbed before being discharged, resulting in poor adsorption performance. Simultaneously, some solid impurities may enter the treatment pipe 2 from the outside air. Furthermore, when formaldehyde adsorption occurs under high external humidity, some water vapor may enter the treatment pipe 2 along with the outside air, causing some solid impurities to clog the interior of the adsorption layer 5, thus affecting its adsorption effect on formaldehyde. Water vapor entering the adsorption layer 5 may also occupy some formaldehyde sites, reducing adsorption efficiency. In severe cases, under prolonged high humidity, the adsorption layer 5 may even clump and deform, making it impossible to accurately control the height of the exhaust pipe 6 within the adsorption layer 5, hindering the downward movement of the adsorption layer 5 for formaldehyde catalytic decomposition. Moreover, when the adsorption layer 5 is damaged and loses its adsorption function, air continues to flow within it, affecting the adsorption effect. Manually replacing the adsorption layer 5 is difficult and inefficient, making it impossible to achieve efficient adsorption and removal of formaldehyde.

[0039] like Figures 6 to 10 The formaldehyde adsorption treatment device shown also includes: Heating component 7, located at the top of intake component 4, increases the amount of heat medium entering the sleeve 402 as the sleeve 402 moves downward. Heating component 7 includes a heat generator 701, fixedly connected to the side wall of processing pipe 2 for generating heat medium, with its output end slidably connected to the top of sleeve 402; a conical rod 702, fixedly connected to the bottom of heat generator 701, with its diameter gradually increasing from bottom to top; and an interface 703, located at the inner top of sleeve 402, with the conical rod 702 movably connected inside the interface 703. As sleeve 402 moves downward, the diameter of the conical rod 702 inside the interface 703 gradually decreases, increasing the amount of heat medium entering the sleeve 402 per unit time. 02. The amount of heat medium in the inner cavity increases; multiple sets of interfaces 703 at the top of the sleeve 402 and conical rods 702 at the output end of the heat generator 701 are arranged in an array, and the interfaces 703 and conical rods 702 are horizontally offset. The movement of the sleeve 402 drives the interface 703 to move, changing the vertical distance between the interface 703 and the conical rod 702. The heat medium generated by the heat generator 701 enters the inner cavity of the sleeve 402 through the conical rod 702 and the interface 703. The filter plate is fixedly installed inside the vent 403 to filter and heat the air entering the heat generator 701. The filter plate blocks and filters solid impurities mixed in the outside air, while the hotter sleeve 402 and the filter plate heat the outside air to remove water vapor from the outside air.

[0040] The air intake assembly 4, located on the side of the treatment pipe 2, is used to adjust the amount of air entering the treatment pipe 2 and filter water vapor. It includes a sleeve 402 with a vent 403 inside. When the sleeve 402 moves downward, the overlapping area of ​​the air intake 401 and the vent 403 increases, thus increasing the amount of air entering the treatment pipe 2. As the exhaust pipe 6 moves, the height of the adsorption layer 5 changes, thereby changing the air intake volume of the air intake 401. This ensures that the air can always completely fill the gaps inside the adsorption layer 5 for adsorption. The height of the adsorption layer 5 is positively correlated with the air intake volume of the air intake 401, ensuring rapid adsorption and treatment of high concentrations of formaldehyde in the outside air.

[0041] Support assembly 8, located at the bottom of intake assembly 4, includes a base 801 fixedly connected to the side wall of processing pipe 2 and a push block 802. Push block 802 moves inside base 801 to adjust the alignment or misalignment of intake port 401 and vent port 403. Support assembly 8 also includes a hose 803, whose output end communicates with the interior of base 801, and whose input end passes through support plate and communicates with the interior of bellows 905. Compressed gas is discharged into base 801 through bellows 905, causing push block 802 to move upwards inside base 801, and exhaust pipe 6 moves... The movement causes the bellows 905 to compress or extend, and the internal space of the bellows 905 changes to allow for air extraction or exhaust. Under the gas conduction of the hose 803, the gas inside the base 801 changes, causing the push block 802 to move inside the base 801. The base 801 is fixed to the side of the processing tube 2, and the push block 802 is slidably connected to the inner wall of the base 801. The top of the push block 802 is fixedly connected to the bottom of the sleeve 402. An elastic block is fixedly connected between the bottom of the push block 802 and the bottom of the inner wall of the base 801. The movement of the push block 802 causes the sleeve 402 to move.

[0042] The connecting component 9 also includes a thermal retaining ring 904, which is fixedly connected to the upper part of the adsorption layer 5. The thermal retaining ring 904 expands in a high-temperature environment and engages with the protrusion on the side wall of the exhaust pipe 6. The telescopic rod 903 drives the exhaust pipe 6 to move the adsorption layer 5 to the corresponding position of the catalytic device 3 to decompose formaldehyde. When the detection component 10 detects that the formaldehyde concentration in the air discharged from the treatment pipe 2 is much higher than the preset value, and the exhaust pipe 6 has reached its highest position, the outside air temperature entering the adsorption layer 5 is at its highest at this time. This causes the thermal retaining ring 904 to sense the temperature and expand to its maximum extent. The thermal retaining ring 904 positions the protrusion on the outer wall of the exhaust pipe 6 above the thermal retaining ring 904. The movement of the exhaust pipe 6 causes the adsorption layer 5 to move, causing the adsorption layer 5 to disengage from the inner wall of the treatment pipe 2. When the adsorption layer 5 and the exhaust pipe 6 gradually reach the corresponding position of the catalytic device 3, the catalytic decomposition of formaldehyde molecules in the adsorption layer 5 takes place.

[0043] When in use, if the detection component 10 detects that the formaldehyde concentration in the air of the exhaust treatment pipe 2 exceeds the preset value, it may be due to an increase in the formaldehyde concentration in the outside air or the partial saturation and failure of the adsorption layer 5. In either case, the telescopic rod 903 is activated to drive the exhaust pipe 6 fixed at the telescopic end to move upward. If the increase in the formaldehyde concentration in the outside air causes the formaldehyde concentration in the air of the exhaust treatment pipe 2 to exceed the preset value, the height of the adsorption layer 5 is increased to ensure that the formaldehyde is fully adsorbed. If the partial saturation and failure of the adsorption layer 5 causes the formaldehyde concentration in the air of the exhaust treatment pipe 2 to exceed the preset value, the height of the adsorption layer 5 is compensated to ensure that the formaldehyde is fully adsorbed.

[0044] When the telescopic rod 903 drives the exhaust pipe 6, which is fixed at the telescopic end, to move upward to increase the usable height of the adsorption layer 5, the exhaust pipe 6 causes the elastic sleeve 901 at the top to contract, and the exhaust pipe 6 stretches the corrugated pipe 905. The internal space of the corrugated pipe 905 increases, allowing air to be drawn in. The gas inside the base 801 enters the corrugated pipe 905 along the hose 803. The reduction of gas inside the base 801 causes the push block 802 to squeeze the elastic block downward inside the base 801. The downward movement of the push block 802 causes the sleeve 402 to move downward. The overlapping area of ​​the vent hole 403 on the sleeve 402 and the air inlet hole 401 on the treatment pipe 2 increases. The amount of outside air entering the adsorption layer 5 through the vent hole 403 and the air inlet hole 401 increases, so that the air completely fills the internal gaps of the adsorption layer 5 for adsorption, improving the utilization rate of the adsorption layer 5 and ensuring the rapid adsorption and treatment of high concentrations of formaldehyde in the outside air.

[0045] When the pusher 802 moves downward, causing the sleeve 402 to move downward, outside air passes through the overlapping position of the air inlet 401 and the vent 403. As the downward distance of the pusher 802 and the sleeve 402 increases, because multiple sets of conical rods 702 are arrayed at the top of the sleeve 402 and the bottom of the heat generator 701, the diameter of the conical rods 702 inside the interface 703 decreases, and the blocking area of ​​the conical rods 702 on the interface 703 decreases. This increases the amount of heat medium generated by the heat generator 701 entering the inner cavity of the sleeve 402, thus increasing the heat medium's effect on the sleeve 402. As heating efficiency increases, the temperature of outside air passing through the vent 403 on the sleeve 402 rises. At the same time, the formaldehyde in the air comes into contact with the adsorption layer 5 and is adsorbed more efficiently. As a result, high-concentration formaldehyde is fully adsorbed. When the formaldehyde concentration in the air discharged from the treatment pipe 2 is detected to be lower than the preset value, the exhaust pipe 6 moves downward to reduce the height of the adsorption layer 5. The compression of the corrugated pipe 905 increases the gas inside the base 801, causing the push block 802 and the sleeve 402 to move upward. When the blockage area of ​​the interface 703 and the conical rod 702 increases, the above-mentioned process needs to be reversed.

[0046] When the detection component 10 detects that the formaldehyde concentration in the air of the exhaust treatment pipe 2 is much higher than the preset value, and the exhaust pipe 6 has reached its highest position, if the external formaldehyde concentration is within the treatment range of the formaldehyde adsorption device, the adsorption layer 5 is completely saturated and can no longer adsorb formaldehyde. At the same time, as the exhaust pipe 6 drives the corrugated pipe 905 to move upward to the maximum distance, the amount of gas drawn into the corrugated pipe 905 from the bottom support 801 under negative pressure reaches its maximum value along the hose 803. The push block 802 squeezes the elastic block and moves downward along the bottom support 801 to the maximum distance. The push block 802 drives the sleeve 402 to move downward to the maximum distance. At this time, the sleeve 402 drives the vent 403 and the inlet 401 to reach the maximum overlap area, which further facilitates the ventilation effect during the subsequent catalytic decomposition and desorption of the adsorption layer 5, and avoids secondary pollution of the adsorption layer 5 by the desorbed formaldehyde.

[0047] Simultaneously, when the sleeve 402 moves downward to its maximum distance, it drives the top interface 703 to move downward to its maximum distance. The blockage area of ​​the conical rod 702 on the interface 703 reaches its minimum value, and the amount of heat medium generated by the heat generator 701 entering the sleeve 402 along the interface 703 reaches its maximum value. After being heated by the heat medium, the outside air temperature entering the adsorption layer 5 is at its highest, causing the thermal retaining ring 904 to sense the temperature and expand to its maximum. The thermal retaining ring 904 engages the protruding point on the outer wall of the exhaust pipe 6 above the thermal retaining ring 904. Then, the telescopic rod 903 is activated to drive the exhaust pipe 6, which is fixed at the telescopic end, to move downward gradually. Under the limiting action of the thermal retaining ring 904, the exhaust pipe 6 drives the adsorption layer 5 to disengage from the inner wall of the treatment pipe 2 and squeezes the reset piece to move downward.

[0048] As the adsorption layer 5 and the exhaust pipe 6 move from top to bottom, the internal temperature of the sleeve 402 reaches its maximum value, and the sleeve 402 continuously heats and desorbs the adsorption layer 5 at high temperature, achieving the removal and reactivation of formaldehyde inside the adsorption layer 5. This provides the high-temperature environment required for the reactivation of the adsorption layer 5 inside the treatment pipe 2, ensuring the desorption and reactivation efficiency. When the adsorption layer 5 continues to move downward and reaches the corresponding position of the catalytic device 3, the catalytic device 3 is activated and, in conjunction with the high-temperature environment inside the sleeve 402, catalytically decomposes the formaldehyde molecules fixed in the pores inside the adsorption layer 5. Through chemical modification or loading a catalyst, the formaldehyde undergoes a chemical reaction and is converted into harmless substances such as water and carbon dioxide.

[0049] When the adsorption layer 5 reaches the bottom of the treatment pipe 2, the catalytic device 3 completes the catalysis of the adsorption layer 5. At this time, the telescopic rod 903 continues to push the exhaust pipe 6 to squeeze the bellows 905 and move it downward. The adsorption layer 5 no longer moves under the limiting action of the reset part at the bottom of the treatment pipe 2. Therefore, the gas inside the bellows 905 continuously enters the bottom support 801 along the hose 803. The thrust value applied by this gas to the bottom of the push block 802 continuously increases and drives the push block 802 to move upward continuously. The push block 802 drives the sleeve 402 to move upward. The sleeve 402 drives the interface 703 to move upward and the area blocked by the conical rod 702 increases. The amount of heat medium generated by the heat generator 701 entering the sleeve 402 along the interface 703 decreases. The temperature of the sleeve 402 continuously decreases and weakens the catalytic decomposition effect on the adsorption layer 5.

[0050] Then, the telescopic rod 903 drives the exhaust pipe 6 fixed at the telescopic end to move upward gradually. The adsorption layer 5 moves upward under the elastic force of the reset member. When the adsorption layer 5 moves upward and resets to the original position where it is snapped against the inner wall of the treatment pipe 2, the catalytic decomposition process of the formaldehyde molecules fixed in the gaps inside the adsorption layer 5 is completed. According to the formaldehyde concentration detected by the detection component 10, the adsorption layer 5 adsorbs formaldehyde in the outside air again and repeats the above process continuously.

[0051] During the catalytic decomposition of formaldehyde molecules, the lower adsorption layer 5 connects with the formaldehyde catalytic device 3 before the upper adsorption layer 5 to perform catalytic decomposition of formaldehyde, and the lower adsorption layer 5 leaves the formaldehyde catalytic device 3 after the upper adsorption layer 5. Thus, the lower adsorption layer 5 performs formaldehyde catalytic decomposition for a longer time than the upper adsorption layer 5. The lower adsorption layer 5, with its higher formaldehyde saturation, can fully catalyze the decomposition, ensuring that formaldehyde can be fully catalyzed and decomposed while improving the efficiency of catalytic decomposition. Since there are two sets of treatment tubes 2 inside the box 101, when the adsorption layer 5 in one set of treatment tubes 2 is saturated, it performs catalytic decomposition of formaldehyde, while the other set continuously adsorbs formaldehyde. Thus, the two sets of treatment tubes 2 alternately and continuously adsorb and catalytically decompose formaldehyde in the outside air, so that formaldehyde molecules in the outside air can be quickly and timely adsorbed and treated.

[0052] Example 3 The control method for the formaldehyde adsorption treatment device described above includes the following steps: S1. Outside air continuously enters the processing pipe 2 inside the body component 1 and passes through the adsorption layer 5 in the processing pipe 2 to adsorb formaldehyde. Then, it flows out of the processing pipe 2 along the exhaust pipe 6 inside the adsorption layer 5 and is discharged to the outside of the body component 1. S2. When the formaldehyde concentration in the exhaust air detected by the detection component 10 exceeds the preset value, the exhaust pipe 6 moves upward inside the adsorption layer 5. The exhaust pipe 6 drives the sleeve 402 to move downward along the outer surface of the processing pipe 2 through the support component 8. The overlapping area of ​​the air inlet 401 and the vent 403 increases, and the air intake in the processing pipe 2 and the adsorption layer 5 increases. S3. When the sleeve 402 moves downward along the outer surface of the processing tube 2, the amount of heat medium introduced into the sleeve 402 by the heating component 7 increases, and the air temperature in the processing tube 2 rises. S4. When the exhaust pipe 6 moves upward to the maximum value inside the adsorption layer 5, the formaldehyde concentration in the exhaust air detected by the detection component 10 still exceeds the preset value. The amount of heat medium entering the sleeve 402 of the heating component 7 reaches the maximum value. The exhaust pipe 6 is connected to the adsorption layer 5 through the connecting component 9 and drives the adsorption layer 5 to move downward inside the processing tube 2. The heating component 7 heats the adsorption layer 5 at high temperature to desorb it.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A formaldehyde adsorption treatment device, comprising a main body component (1), characterized in that, Also includes: The processing tube (2) is fixedly installed inside the body assembly (1). The processing tube (2) has an air inlet (401) inside, which is used to adsorb and decompose formaldehyde in the outside air. An air intake assembly (4) is provided on the side of the processing pipe (2) to regulate the amount of air entering the processing pipe (2) and filter water vapor. It includes a sleeve (402) with a vent hole (403) inside the sleeve (402). When the sleeve (402) moves downward, the overlapping area of ​​the air intake hole (401) and the vent hole (403) increases, and the amount of air entering the processing pipe (2) increases. The adsorption layer (5) is snapped into the inside of the treatment tube (2), and an exhaust pipe (6) is slidably connected inside it. As the concentration of formaldehyde discharged increases, the height of the exhaust pipe (6) inside the adsorption layer (5) increases. The heating component (7) is located on top of the air intake component (4). When the sleeve (402) moves downward, the amount of heat medium entering the sleeve (402) increases.

2. The formaldehyde adsorption treatment device according to claim 1, characterized in that, Also includes: A support assembly (8) is provided at the bottom of the air intake assembly (4) and includes a base (801) and a push block (802). The push block (802) moves inside the base (801) and adjusts the overlapping area of ​​the air intake hole (401) and the vent hole (403). The connecting component (9), which is located inside the adsorption layer (5), includes an elastic sleeve (901) and a bellows (905). The elastic sleeve (901) and the bellows (905) move with the exhaust pipe (6) and isolate the adsorption layer (5).

3. The formaldehyde adsorption treatment device according to claim 2, characterized in that, Also includes: The detection component (10) is fixedly installed at the outlet of the processing tube (2) to monitor and provide feedback on the formaldehyde concentration in the air discharged from the processing tube (2) in real time. The adsorption layer (5) is made of activated carbon and has a ring structure. A support plate is fixedly connected to the bottom of the adsorption layer (5) to support and block the bottom of the adsorption layer (5). A reset component is fixedly connected between the bottom of the inner wall of the treatment tube (2) and the bottom of the support plate. The inner wall of the adsorption layer (5) is sealed and slidably connected to the outer surface of the exhaust pipe (6). Multiple ventilation holes (403) are evenly opened on the side wall of the exhaust pipe (6) for the air adsorbed inside the adsorption layer (5) to be discharged.

4. The formaldehyde adsorption treatment device according to claim 1, characterized in that, The body component (1) includes: The box (101) has an air inlet (102) on its side, the inner wall of the sleeve (402) is slidably connected to the surface of the treatment pipe (2) and corresponds to the position of the air inlet (102), and an air outlet (103) is opened on its top, and a partition (104) is fixedly connected inside it. The fan (105) is fixedly installed at the air outlet (103). The fan (105) draws in external air and enters the box (101) through the air inlet (102). After the formaldehyde is adsorbed by the treatment pipe (2) and the adsorption layer (5), the air passes through the partition (104) and is discharged at the air outlet (103).

5. The formaldehyde adsorption treatment device according to claim 1, characterized in that, The heating assembly (7) includes: A heat generator (701) is fixedly connected to the side wall of the processing tube (2) for generating a heat medium, and the output end of the heat generator (701) is slidably connected to the top of the sleeve (402); A conical rod (702) is fixedly connected to the bottom of the heat generator (701), and the diameter of the conical rod (702) gradually increases from bottom to top; The interface (703) is located at the top of the inner part of the sleeve (402), and the conical rod (702) is movably connected inside the interface (703). When the sleeve (402) moves downward, the diameter of the conical rod (702) inside the interface (703) gradually decreases, and the amount of heat medium entering the inner cavity of the sleeve (402) per unit time increases.

6. The formaldehyde adsorption treatment device according to claim 3, characterized in that, The support component (8) also includes: The hose (803) has its output end connected to the inside of the base (801) and its input end connected to the inside of the bellows (905) through the support plate. The compressed gas in the bellows (905) is discharged into the inside of the base (801) and drives the push block (802) to move upward inside the base (801). The base (801) is fixed to the side of the processing tube (2). The push block (802) is slidably connected to the inner wall of the base (801). The top of the push block (802) is fixedly connected to the bottom of the sleeve (402). An elastic block is fixedly connected between the bottom of the push block (802) and the bottom of the base (801). The movement of the push block (802) drives the sleeve (402) to move.

7. The formaldehyde adsorption treatment device according to claim 3, characterized in that, The connection component (9) further includes: An exhaust port (902) is provided at the top of the processing pipe (2) and above the partition plate (104); The elastic sleeve (901) and the corrugated pipe (905) are both located inside the adsorption layer (5), and the two ends of the elastic sleeve (901) are respectively connected to the top air outlet of the exhaust pipe (6) and the exhaust hole (902), and the two ends of the corrugated pipe (905) are respectively connected to the bottom of the exhaust pipe (6) and the top of the support plate.

8. The formaldehyde adsorption treatment device according to claim 7, characterized in that, The connection component (9) further includes: Telescopic rod (903) is fixedly installed on the inner top of the treatment pipe (2), and the telescopic end of the telescopic rod (903) is fixedly installed on the top of the exhaust pipe (6) to drive the exhaust pipe (6) to move inside the adsorption layer (5) to adjust the air intake height of the exhaust pipe (6); The heat-sensitive retaining ring (904) is fixedly connected to the inside of the adsorption layer (5) and a catalytic device (3) is installed at the bottom of the treatment pipe (2). When the temperature reaches its maximum value, the heat-sensitive retaining ring (904) expands and cooperates with the protrusion on the side wall of the exhaust pipe (6). The telescopic rod (903) drives the exhaust pipe (6) to move the adsorption layer (5) to the corresponding position of the catalytic device (3) to decompose formaldehyde.

9. The control method for the formaldehyde adsorption treatment device according to claim 3, characterized in that, Includes the following steps: S1. Outside air continuously enters the processing pipe (2) inside the body component (1) and passes through the adsorption layer (5) in the processing pipe (2) to adsorb formaldehyde. Then it flows out of the processing pipe (2) along the exhaust pipe (6) inside the adsorption layer (5) and is discharged to the outside of the body component (1). S2. When the formaldehyde concentration in the exhaust air detected by the detection component (10) exceeds the preset value, the exhaust pipe (6) moves upward inside the adsorption layer (5), and the exhaust pipe (6) drives the sleeve (402) to move downward along the outer surface of the treatment pipe (2) through the support component (8). The overlapping area of ​​the air inlet (401) and the ventilation hole (403) increases, and the air intake in the treatment pipe (2) and the adsorption layer (5) increases. S3. When the sleeve (402) moves downward along the outer surface of the processing tube (2), the heating component (7) introduces more heat medium into the sleeve (402), and the air temperature in the processing tube (2) rises. S4. When the exhaust pipe (6) moves up to the maximum value inside the adsorption layer (5), the formaldehyde concentration in the exhaust air detected by the detection component (10) still exceeds the preset value. The amount of heat medium entering the sleeve (402) of the heating component (7) reaches the maximum value. The exhaust pipe (6) is connected to the adsorption layer (5) through the connecting component (9) and drives the adsorption layer (5) to move downward inside the processing tube (2). The heating component (7) heats the adsorption layer (5) at high temperature to desorb it.

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