VOCs treatment device

Abstract

The invention belongs to the technical field of waste gas treatment, and particularly relates to a VOCs treatment device which comprises an adsorption box, a transverse plate is connected to the inner wall of the adsorption box, the adsorption box is divided into an upper cavity and a lower cavity through the transverse plate, a conveying chain is arranged on the upper portion of the upper cavity, and a plurality of hanging locks are arranged on a chain body of the conveying chain at equal intervals. Adsorption assemblies are hung on the multiple hanging locks close to one side of the transverse plate, each adsorption assembly comprises a frame, a plurality of adsorption cylinders are rotationally connected to the frame, a driving mechanism and an unlocking mechanism are arranged at the inlet end of the upper cavity, the driving mechanism is used for driving the adsorption cylinders to rotate, and clamping mechanisms used for clamping the adsorption assemblies are arranged on the opposite side walls of the upper cavity. One end of the transverse plate is provided with a workpiece discharging hole and a lower normally-closed valve plate, the other end of the transverse plate is provided with a workpiece feeding hole and an upper normally-closed valve plate, a moving device is arranged at the bottom of the lower cavity, and a lifting device is arranged on the moving device. According to the invention, the frequency of replacing the adsorption assembly can be reduced, and meanwhile, the continuity of VOCs waste gas purification treatment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly relates to a VOCs treatment device. Background Art

[0002] VOCs waste gas refers to volatile organic compound waste gas, usually including several categories such as non-methane hydrocarbons, oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, sulfur-containing organic compounds, etc., which has an important impact on atmospheric ozone and PM2.5 pollution; the generation of VOCs waste gas mainly comes from processes such as coal chemical industry, petrochemical industry, fuel coating manufacturing, solvent manufacturing and use.

[0003] The main treatment technologies for VOCs waste gas mainly include: absorption method, which uses a liquid absorbent for absorption; combustion method, which uses the combustion of fuel to decompose harmful substances in the waste gas into harmless substances; activated carbon adsorption method, which uses activated carbon to adsorb harmful substances in the waste gas; UV photocatalytic oxidation method, which uses high-energy UV ultraviolet light beams to irradiate the waste gas, causing organic or inorganic compounds to decompose; among them, due to the relatively high purification rate of the activated carbon adsorption method, it is widely used in the treatment of VOCs waste gas.

[0004] When the activated carbon adsorber has been used for a period of time, usually the activated carbon inside it is replaced as a whole. However, the activated carbon particles at the end close to the air inlet in the activated carbon adsorber will be saturated first. At this time, if all the activated carbon needs to be replaced, the activated carbon particles at the end far from the air inlet are not yet saturated, which is likely to cause waste. If not replaced in time, the saturated activated carbon particles at the end close to the air inlet will affect the overall filtration efficiency.

[0005] Therefore, it is necessary to design a VOCs treatment device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a VOCs treatment device to solve the problems existing in the above prior art.

[0007] To achieve the above object, the present invention provides a VOCs treatment device, including an adsorption box. A horizontal plate is connected to the inner wall of the adsorption box. The adsorption box is divided into an upper cavity and a lower cavity by the horizontal plate. A conveyor chain is arranged at the upper part of the upper cavity. A plurality of hanging locks are equidistantly arranged on the chain of the conveyor chain. A plurality of the hanging locks close to one side of the horizontal plate are all hung with adsorption components. The adsorption components are perpendicular to the flow direction of the flue gas. The adsorption component includes a frame. A plurality of adsorption cylinders are rotatably connected to the frame. Adjacent two adsorption cylinders are in frictional contact. A driving mechanism and an unlocking mechanism are arranged at the inlet end of the upper cavity. The driving mechanism is used to drive the adsorption cylinder to rotate. Clamping mechanisms for clamping the adsorption components are arranged on the opposite side walls of the upper cavity. One end of the horizontal plate is provided with a lower part hole and a lower normally closed valve plate. The other end of the horizontal plate is provided with an upper part hole and an upper normally closed valve plate. A moving device is arranged at the bottom of the lower cavity. A lifting device for lifting the adsorption component is arranged on the moving device.

[0008] Preferably, the hanging lock includes a hinge seat connected to the chain. One end of the hinge seat away from the chain is hinged with a lock body. The lock body is of an inverted U-shaped structure. A clamping plate is hinged to one side of the opening of the lock body. A horizontal hole is opened at the bottom end of the clamping plate. A lock tongue is slidably connected in the horizontal hole. The lock tongue is of a wedge-shaped structure. One end of the lock tongue away from the opening of the lock body is connected with a lock rod. A first spring is slidably sleeved on the lock rod. One end of the lock rod away from the lock tongue extends out of the horizontal hole and is slidably sleeved with a plug plate. The plug plate is connected to the lock body. One end of the first spring abuts against the lock tongue, and the other end of the first spring abuts against the plug plate. A mounting seat is connected to the side of the lock body away from the opening. The mounting seat is elastically connected to the clamping plate through a second spring.

[0009] Preferably, the adsorption cylinder includes a rotating cylinder. The side wall of the rotating cylinder is of a mesh structure. The rotating cylinder is filled with activated carbon particles. A belt pulley is connected to the rotating shaft of the rotating cylinder. A plurality of the belt pulleys are connected by a synchronous belt.

[0010] Preferably, the driving mechanism includes a ball screw linear module vertically installed on the top of the adsorption box. A motor one is installed on the slider of the ball screw linear module. The output end of the motor one is connected with a rotating rod. The bottom end of the rotating rod penetrates through the top wall of the adsorption box and is connected with a strong magnet, and the rotating rod is located above the first adsorption component.

[0011] Preferably, the moving device includes a lead screw rotatably connected to the bottom wall of the lower cavity. A fixed seat is threadedly connected to the lead screw. The fixed seat is slidably limited on the inner bottom wall of the lower cavity. A motor two is installed on the adsorption box. The motor two is in transmission cooperation with the lead screw.

[0012] Preferably, the lifting device includes threaded rods rotatably connected to both ends of the fixed seat respectively. The two threaded rods are arranged in parallel. A tray is threadedly connected between the two threaded rods. The tray is used to support the adsorption assembly. The bottom end of the threaded rod is connected to the output end of the third motor, and the third motor is installed on the fixed seat.

[0013] Preferably, the clamping mechanism includes hydraulic rods installed on the opposite side walls of the adsorption box. The extending end of the hydraulic rod penetrates through the side wall of the adsorption box and is connected to a pressing plate. The pressing plate is located in the upper cavity. A sealing cloth is connected between the pressing plate and the adsorption box.

[0014] Preferably, a deflector is arranged between adjacent two rotating cylinders. The deflector is of a V-shaped structure, and the tip of the deflector is located on the windward side. Brush hairs are arranged on both sides at the opening of the deflector, and the brush hairs are in frictional contact with the rotating cylinder.

[0015] Preferably, the unlocking mechanism includes a cylinder installed on the inner wall of the upper cavity. The extending end of the cylinder is connected to a vertical plate. The top end of the buckle plate is connected to a lever, and the vertical plate is in frictional contact with the buckle plate.

[0016] Preferably, it further includes a burner. The intake end of the burner is communicated with the outlet end of the upper cavity through a pipeline, and a third solenoid valve is provided. And an axial flow fan and a VOCs sensor are arranged at the outlet end of the upper cavity. The outlet end of the burner is communicated with the inlet end of the lower cavity through a pipeline. The outlet end of the lower cavity is communicated with the inlet end of the burner through a pipeline, and a first solenoid valve is provided.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] When the VOCs treatment device provided by the present invention is in use, the driving mechanism can drive the adsorption cylinder on the first adsorption assembly to rotate, thereby changing the direction of the side wall of the adsorption cylinder, adjusting the leeward side of the rotating cylinder to the windward side, replacing the orientation of the adsorbed saturated activated carbon particles, thereby ensuring the adsorption effect of the adsorption assembly and prolonging the service time. When the first adsorption assembly is in a fully adsorbed saturated state, the unlocking mechanism unlocks the hanging lock. The first adsorption assembly relies on its own gravity to push open the lower normally closed valve plate and enters the lifting device in the lower cavity through the lower part hole. The adsorption assembly slowly descends through the lifting device and completely enters the lower cavity. The lower normally closed valve plate is reset under the action of the return spring and seals the lower part hole. Subsequently, the conveyor chain drives the second adsorption assembly to move forward by one position. Through the provided clamping mechanism, both sides of the adsorption assembly are clamped to prevent flue gas from passing through the side wall gap of the upper cavity. Through the provided moving device, the replaced adsorption assembly can be taken to the door body, which is convenient for replacing a new adsorption assembly.

[0019] The present invention can reduce the frequency of replacing the adsorption component, save costs, and at the same time ensure the continuity of VOCs waste gas purification treatment, avoiding long-term interruption of VOCs waste gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a VOCs treatment device proposed by the present invention;

[0022] Figure 2 FIG. 2 is a schematic diagram of the structure of the hanging lock in the present invention;

[0023] Figure 3 FIG. 3 is a top view schematic diagram of the adsorption component in the present invention

[0024] Figure 4 FIG. 4 is a schematic diagram of the structure of the lifting device in the present invention;

[0025] Wherein: 1, adsorption box; 2, solenoid valve 1; 3, lower normally closed valve plate; 4, cross plate; 5, lower part hole; 6, adsorption component; 7, cylinder; 8, hanging lock; 9, lifting device; 10, motor 1; 11, rotating rod; 12, conveyor chain; 13, solenoid valve 2; 14, upper normally closed valve plate; 15, upper part hole; 16, solenoid valve 3; 17, burner; 18, motor 2; 19, door body; 20, ball screw linear module; 21, lead screw; 22, pressing plate; 23, sealing cloth; 24, hydraulic rod; 601, frame; 602, flow guide plate; 603, rotating cylinder; 604, belt pulley; 605, lock; 801, spring 1; 802, lock rod; 803, plugging plate; 804, spring 2; 805, mounting seat; 806, lever; 807, hinge seat; 808, buckle plate; 809, lock tongue; 810, lock body; 901, fixed seat; 902, motor 3; 903, tray; 904, threaded rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] The following explanations are made for the technical terms in the embodiments:

[0028] The core components of the ball screw linear module include a ball screw, linear guide rails, aluminum alloy profiles, couplings, motors, photoelectric switches, as well as ball screw pairs and support seats. The ball screw consists of a screw, nut, and balls, and is responsible for converting rotational motion into linear motion. The linear guide rails play a role in supporting and guiding, ensuring the smooth movement of the slider. The aluminum alloy profiles serve as the structural framework, providing overall support and protection. The coupling connects the motor to the ball screw, transmitting torque and compensating for axial deviation. The motor, usually a servo motor or a stepper motor, provides the power source. The photoelectric switch is used for limit and position detection to ensure the accuracy of movement. In addition, the ball screw pair includes a nut and circulating balls, and the support seat is used to fix and support the ball screw.

[0029] The ball screw linear module realizes the conversion from rotational motion to linear motion, and has the characteristics of high precision, high efficiency, and high load capacity. It is widely used in fields such as electronic manufacturing, laser processing, welding, automotive manufacturing, automation equipment, and numerical control machine tools to meet the needs of precise positioning and high-efficiency operation.

[0030] The ball screw linear module realizes the conversion from rotational motion to linear motion, and has the characteristics of high precision, high efficiency, and high load capacity. It is widely used in fields such as electronic manufacturing, laser processing, welding, automotive manufacturing, automation equipment, and numerical control machine tools to meet the needs of precise positioning and high-efficiency operation.

[0031] The working principle of the ball screw linear module is that the motor drives the ball screw to rotate through the coupling, and the balls circulate and roll between the screw and the nut, converting the rotational motion into the linear motion of the nut. The nut drives the slider to make precise linear movement along the linear guide rails, achieving high-precision position control.

[0032] I. Core components of the burner:

[0033] 1. Burner:

[0034] Fuel nozzle: Atomizes the fuel (such as natural gas, diesel) and sprays it into the combustion chamber.

[0035] Ignition electrode: Generates an electric spark to ignite the fuel-air mixture.

[0036] Flame detector: Monitors the flame state and triggers the safety interlock if the flame goes out.

[0037] Function: Achieves stable combustion of the fuel and generates a high-temperature flame (usually with a temperature ≥ 760 °C).

[0038] 2. Heat exchanger:

[0039] Structure: Usually of shell-and-tube or plate design, with the exhaust gas flowing inside / outside the tubes and the high-temperature combustion gas on the other side.

[0040] Function: Recover the combustion waste heat, preheat the VOCs exhaust gas to be treated, and reduce fuel consumption.

[0041] 3. Control System:

[0042] PLC Controller: Receives sensor signals and adjusts the fuel flow rate, air ratio, and combustion temperature.

[0043] Temperature Sensor: Monitors the combustion chamber temperature in real time (usually controlled at 760 - 850 °C).

[0044] Pressure Sensor: Monitors the exhaust gas flow rate and the combustion chamber pressure to ensure stable operation.

[0045] Function: Achieves automatic control and ensures combustion efficiency and safety.

[0046] 4. Safety Devices:

[0047] Gas Leak Detector: Detects fuel leakage and triggers an alarm.

[0048] Emergency Flameout Protection: Automatically cuts off the fuel supply when the flame goes out.

[0049] Explosion-proof Valve: Prevents overpressure explosion in the combustion chamber.

[0050] Function: Ensures the safe operation of the equipment and meets explosion-proof standards.

[0051] II. Working Principle of the Burner

[0052] Startup Phase

[0053] Ignition: The PLC controls the ignition electrode to generate an electric spark to ignite the fuel-air mixture.

[0054] Temperature Rise: The burner gradually increases the fuel supply to raise the combustion chamber temperature to the set value (such as 800 °C).

[0055] Normal Operation Phase

[0056] Exhaust Gas Introduction: When the adsorption component is saturated and the VOCs emissions exceed the standard, solenoid valve three 16 and solenoid valve one 2 open, and the unpurified exhaust gas enters the burner.

[0057] High-temperature Oxidation: The exhaust gas contacts the high-temperature flame in the combustion chamber, and the VOCs are oxidized and decomposed into CO2 and H2O.

[0058] Heat Energy Recovery: The heat exchanger transfers the combustion waste heat to the incoming exhaust gas. The preheated exhaust gas is more easily combustible, saving fuel.

[0059] Regeneration Mode (Adsorbent Regeneration)

[0060] High-temperature Gas Introduction: Part of the high-temperature gas (about 200 - 300 °C) enters the lower chamber through the pipeline to heat the saturated activated carbon adsorption module.

[0061] VOCs Desorption: The VOCs adsorbed by the activated carbon are desorbed at high temperature and return to the combustion chamber with the gas flow for secondary combustion.

[0062] Adsorbent Activation: After high-temperature regeneration, the activated carbon restores its adsorption capacity and returns to the upper chamber for recycling through the lifting device 9.

[0063] Shutdown and Safety Protection

[0064] Flameout: After the PLC detects the shutdown signal, the fuel supply is gradually reduced until the flame goes out.

[0065] Cooling: After the temperature of the combustion chamber drops to the safe range, the fan continues to operate to cool the equipment.

[0066] Fault Handling: If flameout, over-temperature or gas leakage occurs, the safety device is immediately activated to cut off the fuel and give an alarm.

[0067] III. Technical Features

[0068] High-efficiency Purification: The combustion method can degrade more than 99% of VOCs, especially suitable for high-concentration or difficult-to-adsorb substances (such as benzene, toluene, xylene).

[0069] Energy-saving Design: The heat exchanger recovers waste heat and reduces fuel consumption (about 0.2 - 0.5 m 3 of natural gas is required to treat 1 kg of VOCs).

[0070] Automation Control: Through the PLC to link sensors and actuators, unattended operation is realized.

[0071] Safe and Reliable: Multiple safety devices ensure the equipment can respond quickly in case of abnormalities.

[0072] IV. Application Scenarios

[0073] In the VOCs treatment device of the present invention, the burner is combined with the adsorption process to form an "adsorption - combustion" integrated system:

[0074] Daily Operation: The adsorption module treats low-concentration VOCs, and the burner is on standby or operates at low load.

[0075] Peak Treatment: When the waste gas concentration exceeds the standard, the burner is started to completely purify the waste gas and regenerate the adsorbent.

[0076] Continuous Operation: Through the circulation of the adsorbent and combustion regeneration, the continuity and stability of waste gas treatment are ensured.

[0077] Referring to Figures 1 to 4 as shown, the present invention provides a VOCs treatment device, including an adsorption box 1. A cross plate 4 is connected to the inner wall of the adsorption box 1. The adsorption box 1 is divided into an upper cavity and a lower cavity by the cross plate 4. A conveying chain 12 is arranged at the upper part of the upper cavity. A plurality of hanging locks 8 are arranged at equal intervals on the chain of the conveying chain 12. A plurality of adsorption assemblies 6 are hung by the hanging locks 8 close to one side of the cross plate 4. The adsorption assemblies 6 are perpendicular to the flow direction of the flue gas. The adsorption assembly 6 includes a frame 601. A plurality of adsorption cylinders are rotatably connected to the frame 601. Adjacent two adsorption cylinders are in frictional contact. A driving mechanism and an unlocking mechanism are arranged at the inlet end of the upper cavity. The driving mechanism is used to drive the adsorption cylinders to rotate. Clamping mechanisms for clamping the adsorption assemblies 6 are arranged on the opposite side walls of the upper cavity. A lower part hole 5 is opened at one end of the cross plate 4 and a lower normally closed valve plate 3 is arranged. An upper part hole 15 is opened at the other end of the cross plate 4 and an upper normally closed valve plate 14 is arranged. A moving device is arranged at the bottom of the lower cavity. A lifting device 9 for lifting the adsorption assembly 6 is arranged on the moving device.

[0078] The conveying chain 12 includes two sprockets rotatably connected to the inner wall of the upper cavity. The two sprockets are in transmission cooperation through a chain. The rotating shaft of one of the sprockets is in transmission cooperation with a driving motor.

[0079] In this embodiment, in order to prevent the flue gas from passing above the adsorption assembly 6, a partition plate is arranged below the conveying chain 12. A long strip hole is opened on the partition plate. The hanging lock 8 passes through the long strip hole and enters the upper cavity area. A sealing rubber strip is arranged at the contact part between the long strip hole and the hanging lock 8. The cross section of the rubber strip is elliptical. The rubber strip is a hollow structure. Exhaust holes are opened on the wall of the rubber strip, so as to ensure the compressibility of the rubber strip. At the same time, lubricating oil is applied to the outer surface of the rubber strip to reduce the friction with the hanging lock 8. A lock catch 605 is connected to the middle of the top end of the frame 601. The lock catch 605 is used to buckle into the hanging lock 8 to realize the connection. A door body 19 is arranged on the side wall of the lower cavity, which is convenient for replacing the adsorption assembly.

[0080] During use, the driving mechanism can drive the adsorption cylinder on the first adsorption component to rotate, thereby changing the direction of the side wall of the adsorption cylinder, adjusting the leeward side of the rotating cylinder to the windward side, replacing the position of the activated carbon particles that are saturated with adsorption, thereby ensuring the adsorption effect of the adsorption component and extending the service life. When the first adsorption component is in a fully saturated adsorption state, the hanging lock 8 is unlocked through the unlocking mechanism. The first adsorption component relies on its own gravity to push open the normally closed valve plate 3 below, enters the lifting device 9 in the lower cavity through the lower part hole 5, and slowly descends through the lifting device 9. The adsorption component completely enters the lower cavity, and the normally closed valve plate 3 below is reset under the action of the return spring and seals the lower part hole 5. Subsequently, the conveyor chain 12 drives the second adsorption component to move forward by one position. Through the clamping mechanism provided, both sides of the adsorption component are clamped to prevent flue gas from passing through the gap on the side wall of the upper cavity. Through the moving device provided, the replaced adsorption component can be taken to the door body 19 for facilitating the replacement of the new adsorption component 6.

[0081] The present invention can reduce the frequency of replacing the adsorption component, save costs, and at the same time ensure the continuity of the VOCs waste gas purification treatment, avoiding long-term interruption of the VOCs waste gas treatment.

[0082] Further, the hanging lock 8 includes a hinge seat 807 connected to the chain. One end of the hinge seat 807 away from the chain is hinged with a lock body 810. The lock body 810 is of an inverted U-shaped structure. One side of the opening of the lock body 810 is hinged with a buckle plate 808. A horizontal hole is opened at the bottom end of the buckle plate 808. A lock tongue 809 is slidably connected in the horizontal hole. The lock tongue 809 is of a wedge-shaped structure. One end of the lock tongue 809 away from the opening of the lock body 810 is connected with a lock rod 802. A first spring 801 is slidably sleeved on the lock rod 802. One end of the lock rod 802 away from the lock tongue 809 extends out of the horizontal hole and is slidably sleeved with a plug plate 803. The plug plate 803 is connected to the lock body 810. One end of the first spring 801 abuts against the lock tongue 809, and the other end of the first spring 801 abuts against the plug plate 803. One side of the lock body 810 away from the opening is connected with a mounting seat 805. The mounting seat 805 is elastically connected with the buckle plate 808 through a second spring 804.

[0083] By pressing the lock tongue 809 with the lock catch 605, under the action of the slope of the lock tongue 809, the lock tongue 809 is forced to squeeze the first spring 801. At the same time, the first spring 801 overcomes the elastic force of the second spring 804 and rotates counterclockwise. The lock catch 605 enters the opening of the lock body 810. Subsequently, the lock catch 605 and the lock tongue 809 are reset to achieve locking.

[0084] Further, the adsorption cylinder includes a rotating cylinder 603. The side wall of the rotating cylinder 603 is of a mesh structure. The rotating cylinder 603 is filled with activated carbon particles. A belt pulley 604 is connected to the rotating shaft of the rotating cylinder 603. Multiple belt pulleys 604 are connected by a synchronous belt.

[0085] One of the pulleys 604 is driven by a driving mechanism, and the remaining pulleys 604 also rotate synchronously under the transmission of the synchronous belt, thereby realizing the transposition of the saturated activated carbon. On the other hand, under the rotational friction of two adjacent rotating drums 603, the foreign matters intercepted on the outer wall of the rotating drum 603 can be effectively removed, thereby ensuring the adsorption capacity of the activated carbon.

[0086] Furthermore, the driving mechanism includes a ball screw linear module 20 vertically installed on the top of the adsorption box 1. A motor 10 is installed on the slider of the ball screw linear module 20. The output end of the motor 10 is connected to a rotating rod 11. The bottom end of the rotating rod 11 penetrates the top wall of the adsorption box 1 and is connected to a strong magnet, and the rotating rod 11 is located above the first adsorption assembly 6.

[0087] The ball screw linear module 20 drives the motor 10 and the rotating rod 11 to move downward. The strong magnet adsorbs on the pulley 604. The motor 10 is started, and the motor 10 drives the rotating rod 11 and the pulley 604 to rotate.

[0088] Furthermore, the moving device includes a lead screw 21 rotatably connected to the bottom wall of the lower cavity. A fixed seat 901 is threadedly connected to the lead screw 21. The fixed seat 901 is slidably limited on the inner bottom wall of the lower cavity. A motor 18 is installed on the adsorption box 1, and the motor 18 is in transmission cooperation with the lead screw 21.

[0089] In this embodiment, the output end of the motor 18 is connected to a pulley, and one end of the lead screw 21 is also connected to a pulley. The two pulleys are in transmission cooperation through a belt, realizing that the motor 18 drives the lead screw 21 to rotate. The fixed seat 901 moves along the lead screw 21 under the screwing with the lead screw 21 and the limitation of the guiding groove on the inner bottom of the lower cavity.

[0090] Furthermore, the lifting device includes threaded rods 904 respectively rotatably connected to both ends of the fixed seat 901. The two threaded rods 904 are arranged in parallel. A tray 903 is threadedly connected between the two threaded rods 904. The tray 903 is used to support the adsorption assembly 6. The bottom end of the threaded rod 904 is connected to the output end of a motor 902. The motor 902 is installed on the fixed seat 901.

[0091] By controlling the synchronous rotation of the two motors 902, the tray 903 moves upward stably under the screwing of the two threaded rods 904 to lift the adsorption assembly 6.

[0092] Furthermore, the clamping mechanism includes hydraulic rods 24 installed on the opposite side walls of the adsorption box 1. The extending ends of the hydraulic rods 24 penetrate the side walls of the adsorption box 1 and are connected to pressing plates 22. The pressing plates 22 are located in the upper cavity. A sealing cloth 23 is connected between the pressing plates 22 and the adsorption box 1.

[0093] The hydraulic rods 24 on both sides are controlled to extend synchronously, driving the two pressing plates 22 to clamp synchronously towards both sides of the adsorption assembly 6. During the clamping process, the sealing cloth 23 is pulled and unfolded to prevent flue gas from passing through the gap between the pressing plate 22 and the inner wall, effectively blocking the flue gas.

[0094] Further, a flow guide plate 602 is arranged between adjacent two rotating cylinders 603. The flow guide plate 602 is of a V-shaped structure, and the tip of the flow guide plate 602 is located on the windward side. Brush hairs are arranged on both sides of the opening of the flow guide plate 602, and the brush hairs are in frictional contact with the rotating cylinder 603.

[0095] The flow guide plate 602 arranged can effectively guide the flue gas to prevent the flue gas from passing through the junction of adjacent two rotating cylinders 603 and reducing the adsorption efficiency. At the same time, when the rotating cylinder 603 rotates, the brush hairs arranged can effectively brush off the foreign matters intercepted on the rotating cylinder 603.

[0096] Further, the unlocking mechanism includes a cylinder 7 installed on the inner wall of the upper cavity. The extending end of the cylinder 7 is connected with a vertical plate. The top end of the buckling plate 808 is connected with a dial rod 806, and the vertical plate is in frictional contact with the buckling plate 808.

[0097] When the cylinder 7 extends, it drives the vertical plate to push the dial rod 806 to drive the buckling plate 808 to rotate counterclockwise. The rotating buckling plate 808 drives the lock tongue 809 to separate from the lock body 810, so that the lock catch 605 is disengaged under the action of the gravity of the adsorption assembly 6 to achieve unlocking.

[0098] Further, it further includes a burner 17. The air inlet end of the burner 17 is communicated with the outlet end of the upper cavity through a pipeline, and a solenoid valve three 16 is arranged. And an axial flow fan and a VOCs sensor are arranged at the outlet end of the upper cavity. The outlet end of the burner 17 is communicated with the inlet end of the lower cavity through a pipeline, and the outlet end of the lower cavity is communicated with the inlet end of the burner 17 through a pipeline, and a solenoid valve one 2 is arranged.

[0099] The axial flow fan arranged enables the flue gas in the adsorption box 1 to flow in one direction. After the VOCs are adsorbed and purified by the adsorption assembly 6, they are detected by the VOCs sensor. When the standard is met, the solenoid valve two 13 at the outlet end of the upper cavity is opened for exhaust. When the standard is not met, the solenoid valve three 16 and the solenoid valve one 2 are opened, and the VOCs gas enters the burner 17. The burner 17 is started, and the high temperature generated by the combustion of the burner 17 converts the VOCs into harmless gases. Subsequently, the high temperature gas enters the lower cavity, and the harmful substances on the activated carbon particles in the replaced adsorption assembly 6 are carried out by the high temperature gas and enter the burner 17 for secondary combustion, and the harmful substances are converted into harmless gases and discharged. And the adsorption assembly 6 in the lower cavity is lifted by the lifting device 9 through the upper part hole 15, and the upper normally closed valve plate 14 is opened and enters the upper cavity, and then the lock catch 605 is buckled on the hanging lock 8 for recycling.

[0100] The VOCs treatment device provided by the present invention has the following working principle: When in use, the axial flow fan is started to make the flue gas in the adsorption box 1 flow in one direction. After the VOCs are adsorbed and purified by the adsorption component 6, they are detected by the VOCs sensor. When the standard is met, the solenoid valve II 13 at the outlet end of the upper cavity is opened for exhaust. When the standard is not met, the solenoid valve III 16 and the solenoid valve I 2 are opened, and the VOCs gas enters the burner 17. The burner 17 is started, and the high temperature generated by the combustion of the burner 17 converts the VOCs into harmless gases. Subsequently, the high-temperature gas enters the lower cavity, and the harmful substances on the activated carbon particles in the replaced adsorption component 6 are carried out by the high-temperature gas and enter the burner 17 for secondary combustion, and the harmful substances are converted into harmless gases and discharged. The adsorption component 6 in the lower cavity is lifted by the lifting device 9 through the upper part hole 15, and the normally closed valve plate 14 is pushed open to enter the upper cavity. Subsequently, the locking buckle 605 is buckled on the hanging lock 8 for recycling. When it is necessary to change the orientation of the side wall of the adsorption cylinder on the first adsorption component 6, the driving wheel 604 is rotated by the driving mechanism. When the activated carbon on the first adsorption component 6 is saturated, the hanging lock 8 is unlocked by the unlocking mechanism. The first adsorption component 6 relies on its own gravity to push open the normally closed valve plate 3 at the lower part and enters the lifting device 9 in the lower cavity through the lower part hole 5. It slowly descends through the lifting device 9, and the adsorption component 6 completely enters the lower cavity. The normally closed valve plate 3 at the lower part is reset under the action of the return spring and seals the lower part hole 5. Subsequently, the conveyor chain 12 drives the second adsorption component 6 to move forward by one position.

[0101] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A VOCs treatment device, characterized in that, It includes an adsorption box (1). A cross plate (4) is connected to the inner wall of the adsorption box (1). The adsorption box (1) is divided into an upper chamber and a lower chamber by the cross plate (4). A conveyor chain (12) is arranged at the upper part of the upper chamber. A plurality of hanging locks (8) are equidistantly arranged on the chain of the conveyor chain (12). A plurality of the hanging locks (8) close to one side of the cross plate (4) are all hung with adsorption components (6). The adsorption components (6) are perpendicular to the flowing direction of the flue gas. The adsorption component (6) includes a frame (601). A plurality of adsorption cylinders are rotatably connected to the frame (601). Adjacent two adsorption cylinders are in frictional contact. A driving mechanism and an unlocking mechanism are arranged at the inlet end of the upper chamber. The driving mechanism is used to drive the adsorption cylinders to rotate. Clamping mechanisms for clamping the adsorption components (6) are arranged on the opposite side walls of the upper chamber. One end of the cross plate (4) is provided with a lower part hole (5) and is provided with a lower normally closed valve plate (3). The other end of the cross plate (4) is provided with an upper part hole (15) and is provided with an upper normally closed valve plate (14). A moving device is arranged at the bottom of the lower chamber. A lifting device (9) for lifting the adsorption component (6) is arranged on the moving device.

2. The VOCs treatment device according to claim 1, characterized in that, The hanging lock (8) includes a hinge seat (807) connected to the chain. One end of the hinge seat (807) away from the chain is hinged with a lock body (810). The lock body (810) is of an inverted U-shaped structure. A buckle plate (808) is hinged to one side of the opening of the lock body (810). A transverse hole is opened at the bottom end of the buckle plate (808). A lock tongue (809) is slidably connected in the transverse hole. The lock tongue (809) is of a wedge-shaped structure. One end of the lock tongue (809) away from the opening of the lock body (810) is connected with a lock rod (802). A first spring (801) is slidably sleeved on the lock rod (802). One end of the lock rod (802) away from the lock tongue (809) extends out of the transverse hole and is slidably sleeved with a plug plate (803). The plug plate (803) is connected to the lock body (810). One end of the first spring (801) abuts against the lock tongue (809). The other end of the first spring (801) abuts against the plug plate (803). A mounting seat (805) is connected to the side of the lock body (810) away from the opening. The mounting seat (805) is elastically connected to the buckle plate (808) through a second spring (804).

3. The VOCs treatment device according to claim 1, characterized in that, The adsorption cylinder includes a rotating cylinder (603). The side wall of the rotating cylinder (603) is of a net structure. The rotating cylinder (603) is filled with activated carbon particles. A belt pulley (604) is connected to the rotating shaft of the rotating cylinder (603). A plurality of the belt pulleys (604) are connected by a synchronous belt.

4. The VOCs treatment device according to claim 1, wherein The driving mechanism includes a ball screw linear module (20) vertically installed on the top of the adsorption box (1). A first motor (10) is installed on the slider of the ball screw linear module (20). The output end of the first motor (10) is connected to a rotating rod (11). The bottom end of the rotating rod (11) penetrates through the top wall of the adsorption box (1) and is connected to a strong magnet, and the rotating rod (11) is located above the first adsorption component (6).

5. The VOCs treatment device according to claim 1, characterized in that, The moving device includes a lead screw (21) rotatably connected to the bottom wall of the lower cavity. A fixing seat (901) is threadedly connected to the lead screw (21). The fixing seat (901) is slidably limited on the inner bottom wall of the lower cavity. A second motor (18) is installed on the adsorption box (1), and the second motor (18) is in driving cooperation with the lead screw (21).

6. The VOCs treatment device according to claim 5, wherein The lifting device (9) includes threaded rods (904) respectively rotatably connected to both ends of the fixing seat (901). The two threaded rods (904) are arranged in parallel. A tray (903) is threadedly connected between the two threaded rods (904). The tray (903) is used to support the adsorption component (6). The bottom end of the threaded rod (904) is connected to the output end of a third motor (902), and the third motor (902) is installed on the fixing seat (901).

7. The VOCs treatment device according to claim 1, wherein, The clamping mechanism includes hydraulic rods (24) installed on the opposite side walls of the adsorption box (1). The extending ends of the hydraulic rods (24) penetrate through the side walls of the adsorption box (1) and are connected to pressing plates (22). The pressing plates (22) are located in the upper cavity. A sealing cloth (23) is connected between the pressing plates (22) and the adsorption box (1).

8. The VOCs treatment device according to claim 3, wherein A flow guide plate (602) is arranged between two adjacent rotating cylinders (603). The flow guide plate (602) is of a V-shaped structure, and the tip of the flow guide plate (602) is located on the windward side. Brush hairs are arranged on both sides of the opening of the flow guide plate (602), and the brush hairs are in frictional contact with the rotating cylinder (603).

9. The VOCs treatment device according to claim 2, characterized in that, The unlocking mechanism includes a cylinder (7) installed on the inner wall of the upper cavity. The extending end of the cylinder (7) is connected to a vertical plate. The top end of the buckling plate (808) is connected to a dial rod (806), and the vertical plate is in frictional contact with the buckling plate (808).

10. The VOCs treatment device according to claim 1, characterized in that, It further includes a burner (17). The air inlet end of the burner (17) is communicated with the outlet end of the upper cavity through a pipeline, and a third solenoid valve (16) is provided. An axial flow fan and a VOCs sensor are arranged at the outlet end of the upper cavity. The outlet end of the burner (17) is communicated with the inlet end of the lower cavity through a pipeline. The outlet end of the lower cavity is communicated with the inlet end of the burner (17) through a pipeline, and a first solenoid valve (2) is provided.

Images