VOC waste gas adsorption and concentration device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a VOC (volatile organic compound) waste gas adsorption and concentration device which comprises a box body, a gas inlet filtering mechanism and an adsorption and concentration mechanism, the gas inlet filtering mechanism comprises two filtering boxes communicated with the outer wall of the box body and a barrel communicated between the two filtering boxes through a pipeline, and a gas inlet is formed in the outer wall of the barrel; a rotating piston is rotationally connected to the interior of the barrel, an L-shaped channel is formed in the outer wall of the rotating piston in a penetrating mode, a sleeve extending to the position below the barrel is fixedly connected to the lower end face of the rotating piston, two circumferentially-distributed spiral grooves are formed in the outer wall of the sleeve in a penetrating mode, and the electric push rod, the rolling wheels, the sleeve, the spiral grooves and the rotating piston are matched with the two filtering boxes; when the filter plate is replaced, gas inlet of the device does not need to be stopped, the waste gas treatment efficiency is high, the filter plate can be fixed in a clamping mode through cooperation of a sliding rod, a spring, a second rotating shaft, a first connecting rod, a second connecting rod, a sliding plate and a clamping block, and mounting and dismounting are convenient.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and specifically discloses a VOC waste gas adsorption and concentration device. Background Technology

[0002] Adsorption is a common and efficient method for treating waste gas. Adsorption materials have a certain adsorption capacity, and desorption and regeneration of the adsorbent can significantly reduce costs. During adsorption and desorption, large volumes of low-concentration waste gas that is difficult to treat can be concentrated into smaller volumes of high-concentration waste gas that is easier to treat. Water vapor desorption and hot air desorption are the most common desorption methods. Furthermore, organic waste gas may contain high temperatures and humidity; therefore, adsorption methods require high-temperature resistance and hydrophobicity in both the adsorption materials and the adsorption device. A rotary adsorption system is one of the effective means to achieve integrated adsorption and desorption of organic waste gas. Traditional adsorption rotary systems divide the sealed system into adsorption and desorption zones, achieving simultaneous adsorption and desorption through the rotation of the rotor.

[0003] Chinese patent CN214809666U discloses a rotary organic waste gas adsorption and concentration device for VOC waste gas treatment, including a filter box and an adsorption and concentration box. A first motor is fixedly connected to the bottom of the left side wall of the adsorption and concentration box. The output end of the first motor is fixedly sleeved at the center of a pulley. One end of a synchronous belt is slidably sleeved on the outer wall of the pulley, and the other end of the synchronous belt is slidably sleeved on the outer wall of the rotary wheel. The rotary wheel rotates and is sleeved on the outer wall of a fixed shaft. Multiple heating plates are arranged sequentially, allowing the waste gas to pass through each heating plate before exiting the heating cylinder. The multiple heating plates increase the contact area between the waste gas and the heating plates, resulting in more uniform and comprehensive heating of the waste gas. This facilitates the subsequent adsorption of particles in the waste gas by the adsorption plates, thus improving the initial filtration effect. The adsorption plates are also secured in slots, making them easy to replace.

[0004] The aforementioned document discloses a rotary organic waste gas adsorption and concentration device for VOC waste gas treatment. When replacing the adsorption plates, the device needs to be stopped, which affects the waste gas treatment efficiency. Furthermore, the adsorption plates are fixed with bolts, making installation and disassembly inconvenient. Therefore, a VOC waste gas adsorption and concentration device is needed to solve this problem. Summary of the Invention

[0005] This utility model proposes a VOC waste gas adsorption and concentration device, which uses two filter boxes to alternately. When changing the filter plates, there is no need to stop the air intake of the device, resulting in high waste gas treatment efficiency. Furthermore, the filter plates are fixed by snap-fit, making installation and disassembly convenient.

[0006] This utility model is implemented as follows: a VOC waste gas adsorption and concentration device includes a housing, an air inlet filtration mechanism, and an adsorption and concentration mechanism. The air inlet filtration mechanism includes two filter boxes connected to the outer wall of the housing, and a cylinder connected to the two filter boxes through a pipe. An air inlet is provided on the outer wall of the cylinder. A rotating piston is rotatably connected inside the cylinder. An L-shaped channel is opened through the outer wall of the rotating piston. A sleeve extending to the bottom of the cylinder is fixedly connected to the lower end face of the rotating piston. Two circumferentially distributed spiral grooves are opened through the outer wall of the sleeve.

[0007] A support plate is fixedly connected to the left end face of the box, and an electric actuator is installed on the upper end face of the support plate. The output end of the electric actuator is rotatably connected to two symmetrically distributed rollers through a rotating shaft. The two rollers are slidably connected to two spiral grooves respectively.

[0008] Preferably, the air intake filtration mechanism further includes a filter plate movably connected inside the filter box. An mounting block is fixedly connected to the outer wall of the filter plate. Two symmetrically distributed slide rods are fixedly connected inside the mounting block. Two symmetrically distributed sliding plates are slidably connected to the outer walls of the two slide rods. A locking block is fixedly connected to the outer walls of the two opposing sliding plates. A second rotating shaft is rotatably connected inside the mounting block. A first connecting rod is fixedly connected to the outer wall of the second rotating shaft. Two second connecting rods are hinged to both ends of the first connecting rod. The other ends of the two second connecting rods are respectively hinged to the two sliding plates. A spring located between the two sliding plates is sleeved on the outer wall of each of the two slide rods. Two symmetrically distributed mounting plates are fixedly connected to the outer wall of the filter box. Locking holes are provided on the outer walls of both mounting plates.

[0009] Preferably, the adsorption concentration mechanism includes a drive motor installed on the outer wall of the box, the output end of the drive motor is fixedly connected to a first rotating shaft extending into the inside of the box, the outer wall of the first rotating shaft is fixedly connected to a zeolite wheel that is rotatably connected to the box via a bearing, and heating chambers and cooling chambers that are fixedly connected to the inner wall of the box are provided on both the left and right sides of the zeolite wheel.

[0010] Preferably, the spiral groove has 0.5 turns.

[0011] Preferably, one end of the second rotating shaft extends to the outside of the mounting block and is fixedly connected to a handle.

[0012] Preferably, the end of the card block closest to the mounting plate is set as an inclined surface.

[0013] Preferably, an air outlet is provided on the right end face of the housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This VOC waste gas adsorption and concentration device, through the cooperation of electric push rod, roller, sleeve, spiral groove, rotating piston and two filter boxes, does not require stopping the air intake when changing filter plates, and has high waste gas treatment efficiency. Through the cooperation of slide rod, spring, second rotating shaft, first connecting rod, second connecting rod, slide plate and locking block, the filter plates can be fixed by snap-fit, which is convenient for installation and disassembly. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of a VOC waste gas adsorption and concentration device according to the present invention;

[0017] Figure 2 This is a front sectional view of a VOC waste gas adsorption and concentration device according to the present invention;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a cross-sectional view of a VOC waste gas adsorption and concentration device according to the present invention.

[0020] Figure 5 This is a structural diagram of the filter plate and mounting block of this utility model;

[0021] Figure 6 This is a structural diagram of the rotating piston of this utility model.

[0022] The markings in the diagram are: 1. Housing; 2. Drive motor; 3. First rotating shaft; 4. Zeolite rotor; 5. Heating chamber; 6. Cooling chamber; 7. Filter box; 8. Cylinder; 9. Air inlet; 10. Air outlet; 11. Rotating piston; 12. L-shaped channel; 13. Mounting plate; 14. Sleeve; 15. Spiral groove; 16. Support plate; 17. Electric actuator; 18. Roller; 19. Filter plate; 20. Mounting block; 21. Locking hole; 22. Slide rod; 23. Second rotating shaft; 24. First connecting rod; 25. Second connecting rod; 26. Slide plate; 27. Locking block; 28. Spring. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0025] Please see Figure 1-6A VOC waste gas adsorption and concentration device includes a housing 1, an air inlet filtration mechanism and an adsorption and concentration mechanism. The air inlet filtration mechanism includes two filter boxes 7 connected to the outer wall of the housing 1 and a cylinder 8 connected between the two filter boxes 7 through a pipe. An air inlet 9 is provided on the outer wall of the cylinder 8. A rotating piston 11 is rotatably connected inside the cylinder 8. An L-shaped channel 12 is opened through the outer wall of the rotating piston 11. A sleeve 14 extending to the bottom of the cylinder 8 is fixedly connected to the lower end face of the rotating piston 11. Two circumferentially distributed spiral grooves 15 are opened through the outer wall of the sleeve 14.

[0026] A support plate 16 is fixedly connected to the left end face of the housing 1. An electric actuator 17 is installed on the upper end face of the support plate 16. The output end of the electric actuator 17 is rotatably connected to two symmetrically distributed rollers 18 through a rotating shaft. The two rollers 18 are slidably connected to two spiral grooves 15 respectively.

[0027] In this embodiment: the electric actuator 17 is activated, which drives the two rollers 18 to move up and down, and then drives the sleeve 14 to rotate 90° through the spiral groove 15. The sleeve 14 further drives the rotating piston 11 to rotate 90°, so that the air inlet 9 can be connected to the two filter boxes 7 respectively. When the air inlet 9 is connected to one of the filter boxes 7, the filter plate 19 in the other filter box 7 can be disassembled, replaced or cleaned. The inner walls of the two filter boxes 7 are equipped with check valves to prevent flue gas from entering the filter box 7 from the box body 1 in reverse. By using the two filter boxes 7 alternately, there is no need to stop the air intake of the device when replacing the filter plate 19, and the waste gas treatment efficiency is high.

[0028] As a technical optimization of this utility model, the air intake filtration mechanism also includes a filter plate 19 movably connected inside the filter box 7. An installation block 20 is fixedly connected to the outer wall of the filter plate 19. Two symmetrically distributed slide rods 22 are fixedly connected inside the installation block 20. Two symmetrically distributed sliding plates 26 are slidably connected to the outer walls of the two slide rods 22. A locking block 27 is fixedly connected to the outer walls of the two sliding plates 26 facing away from each other. A second rotating shaft 23 is rotatably connected inside the installation block 20. A first connecting rod 24 is fixedly connected to the outer wall of the second rotating shaft 23. Two second connecting rods 25 are hinged to both ends of the first connecting rod 24. The other ends of the two second connecting rods 25 are respectively hinged to the two sliding plates 26. A spring 28 located between the two sliding plates 26 is sleeved on the outer wall of each of the two slide rods 22. Two symmetrically distributed installation plates 13 are fixedly connected to the outer wall of the filter box 7. A locking hole 21 is opened on the outer wall of each of the two installation plates 13.

[0029] In this embodiment: by rotating the second rotating shaft 23, the second rotating shaft 23 drives the first connecting rod 24 to rotate, which in turn drives the two sliding plates 26 to move relative to each other through the second connecting rod 25. The relative movement of the two sliding plates 26 further drives the two locking blocks 27 to move relative to each other, causing the locking blocks 27 to disengage from the locking holes 21. At this time, the filter plate 19 can be disassembled for cleaning or replacement. When installing the filter plate 19, the filter plate 19 is inserted into the filter box 7 and pushed inward. When the locking block 27 contacts the mounting plate 13, the mounting plate 13 presses the locking block 27 inward and compresses the spring 28. When the locking block 27 is aligned with the locking hole 21, the locking block 27 slides outward under the elastic force of the spring 28 and locks into the locking hole 21, thus fixing the filter plate 19. This utility model fixes the filter plate 19 by a locking method, which is convenient for installation and disassembly.

[0030] As a technical optimization of this utility model, the adsorption concentration mechanism includes a drive motor 2 installed on the outer wall of the box 1. The output end of the drive motor 2 is fixedly connected to a first rotating shaft 3 extending into the inside of the box 1. The outer wall of the first rotating shaft 3 is fixedly connected to a zeolite wheel 4 that is rotatably connected to the box 1 through a bearing. Heating chambers 5 and cooling chambers 6 are provided on both the left and right sides of the zeolite wheel 4 and are fixedly connected to the inner wall of the box 1.

[0031] In this embodiment: the waste gas is adsorbed by the zeolite rotor 4, and the treated gas is discharged from the housing 1 through the outlet 10. The drive motor 2 is started, and the drive motor 2 drives the first rotating shaft 3 to rotate slowly, which in turn drives the zeolite rotor 4 to rotate slowly. When the zeolite rotor 4 rotates to the heating chamber 5, the organic components adsorbed in the zeolite rotor 4 are desorbed by introducing high temperature gas into the heating chamber 5. The desorbed gas is introduced into the end treatment equipment for treatment. The zeolite rotor 4 continues to rotate and enters the cooling chamber 6. The low temperature gas in the cooling chamber 6 cools down the zeolite rotor 4, so that the zeolite rotor 4 restores its adsorption properties.

[0032] As a technical optimization of this utility model, the spiral groove 15 has 0.5 turns.

[0033] In this embodiment, by setting the number of turns of the spiral groove 15 to 0.5 turns, it is convenient to make the rotating piston 11 rotate 90°.

[0034] As a technical optimization of this utility model, one end of the second rotating shaft 23 extends to the outside of the mounting block 20 and is fixedly connected with a handle.

[0035] In this embodiment, a handle is fixedly connected to one end of the second rotating shaft 23 to facilitate the operator to rotate the second rotating shaft 23.

[0036] As a technical optimization of this utility model, the end of the card block 27 near the mounting plate 13 is set as an inclined surface.

[0037] In this embodiment, by setting one end of the card block 27 as an inclined surface, it is convenient to install the filter plate 19.

[0038] As a technical optimization of this utility model, an air outlet 10 is provided on the right end face of the box 1.

[0039] In this embodiment, an air outlet 10 is provided at the right end of the housing 1 to facilitate exhaust.

[0040] The working principle and usage process of this utility model are as follows: When replacing the filter plate 19, the electric push rod 17 is activated. The electric push rod 17 drives the two rollers 18 to move up and down, which in turn drives the sleeve 14 to rotate 90° through the spiral groove 15. The sleeve 14 further drives the rotating piston 11 to rotate 90°, so that the air inlet 9 can be connected to the two filter boxes 7 respectively. When the air inlet 9 is connected to one of the filter boxes 7, the filter plate 19 in the other filter box 7 can be disassembled and replaced. Specifically, the second rotating shaft 23 is rotated by the handle. The second rotating shaft 23 drives the first connecting rod 24 to rotate, which in turn drives the two sliding plates 26 to move relative to each other through the second connecting rod 25. The two locking blocks 27 move relative to each other, causing the locking blocks 27 to disengage from the locking holes 21. At this point, the filter plate 19 can be removed for cleaning or replacement. When installing the filter plate 19, insert the filter plate 19 into the filter box 7 and push it inward. When the locking block 27 contacts the mounting plate 13, the mounting plate 13 presses the locking block 27 inward and compresses the spring 28. When the locking block 27 is aligned with the locking hole 21, the locking block 27 slides outward under the elastic force of the spring 28 and locks into the locking hole 21, thus fixing the filter plate 19. This utility model does not require stopping the air intake of the device when replacing the filter plate 19, resulting in high exhaust gas treatment efficiency. Furthermore, the filter plate 19 is fixed by a locking method, making installation and disassembly convenient.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A VOC waste gas adsorption and concentration device, characterized in that: The device includes a housing (1), an air intake filtration mechanism, and an adsorption concentration mechanism. The air intake filtration mechanism includes two filter boxes (7) connected to the outer wall of the housing (1) and a cylinder (8) connected between the two filter boxes (7) via a pipe. The outer wall of the cylinder (8) is provided with an air inlet (9). A rotating piston (11) is rotatably connected inside the cylinder (8). An L-shaped channel (12) is opened through the outer wall of the rotating piston (11). A sleeve (14) extending to the bottom of the cylinder (8) is fixedly connected to the lower end face of the rotating piston (11). Two circumferentially distributed spiral grooves (15) are opened through the outer wall of the sleeve (14). A support plate (16) is fixedly connected to the left end face of the box (1), and an electric push rod (17) is installed on the upper end face of the support plate (16). The output end of the electric push rod (17) is rotatably connected to two symmetrically distributed rollers (18) through a rotating shaft. The two rollers (18) are slidably connected to the two spiral grooves (15) respectively.

2. The VOC waste gas adsorption and concentration device according to claim 1, characterized in that: The air intake filtration mechanism further includes a filter plate (19) movably connected inside the filter box (7). An mounting block (20) is fixedly connected to the outer wall of the filter plate (19). Two symmetrically distributed slide rods (22) are fixedly connected inside the mounting block (20). Two symmetrically distributed sliding plates (26) are slidably connected to the outer walls of the two slide rods (22). Each of the two sliding plates (26) has a locking block (27) fixedly connected to its opposite outer walls. A second rotating shaft (23) is rotatably connected inside the mounting block (20). The outer wall of the two rotating shafts (23) is fixedly connected to a first connecting rod (24). The two ends of the first connecting rod (24) are hinged to two second connecting rods (25). The other ends of the two second connecting rods (25) are respectively hinged to two sliding plates (26). The outer walls of the two sliding rods (22) are fitted with springs (28) located between the two sliding plates (26). The outer wall of the filter box (7) is fixedly connected to two symmetrically distributed mounting plates (13). The outer walls of the two mounting plates (13) are provided with locking holes (21).

3. The VOC waste gas adsorption and concentration device according to claim 1, characterized in that: The adsorption concentration mechanism includes a drive motor (2) installed on the outer wall of the box (1). The output end of the drive motor (2) is fixedly connected to a first rotating shaft (3) extending into the inside of the box (1). The outer wall of the first rotating shaft (3) is fixedly connected to a zeolite wheel (4) rotatably connected to the box (1) through a bearing. The left and right sides of the zeolite wheel (4) are provided with a heating chamber (5) and a cooling chamber (6) fixedly connected to the inner wall of the box (1).

4. The VOC waste gas adsorption and concentration device according to claim 1, characterized in that: The spiral groove (15) has 0.5 turns.

5. A VOC waste gas adsorption and concentration device according to claim 2, characterized in that: One end of the second pivot (23) extends to the outside of the mounting block (20) and is fixedly connected to a handle.

6. The VOC waste gas adsorption and concentration device according to claim 2, characterized in that: The end of the card block (27) near the mounting plate (13) is set as a slope.

7. The VOC waste gas adsorption and concentration device according to claim 1, characterized in that: An air outlet (10) is provided on the right end face of the box (1).

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