A detachable filter layer structure of a dry-type filter activated carbon adsorption tank

Abstract

The utility model discloses a detachable filter layer structure of dry type filter active carbon adsorption box belongs to waste gas treatment equipment technical field, including box, drawer, drying mechanism and sealing mechanism, drying mechanism sets up in the air inlet, sealing mechanism sets up in the box for installing and sealing drawer, sealing mechanism includes fixed base, and the sealing gasket of fixed base inner wall and support frame, the drawer bottom is provided with the recess that is matched with support frame, when the drawer pushes in, the drawer bottom is supported and lifts up by support frame, when the drawer is in place, recess is aligned with support frame, and the drawer falls down and compresses tightly sealing gasket because of gravity. The utility model discloses above -mentioned structure, avoided the sliding wear and tear of sealing gasket when the drawer installation, and utilize the self weight of drawer to realize reliable sealing, and effectively remove the water vapor in waste gas through drying mechanism simultaneously, prevent the moisture failure of active carbon, and the service life is prolonged significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, and in particular to a detachable filter layer structure of a dry filter activated carbon adsorption box. Background Technology

[0002] Activated carbon adsorption is one of the technologies currently used to treat industrial waste gas, especially volatile organic compounds. Activated carbon adsorption boxes are widely used due to their simple structure and high adsorption efficiency. In these adsorption boxes, activated carbon, as a consumable, needs to be replaced regularly to maintain the treatment effect.

[0003] To facilitate maintenance and replacement of failed activated carbon, existing adsorption boxes design the activated carbon filter layer as a pull-out drawer-type structure or a detachable filter module. While this detachable design facilitates operation, it also introduces new technical challenges, namely the sealing problem between the drawer or filter module and the box body.

[0004] In actual operation, if the seal between the drawer and the cabinet is not tight, gaps will be created, causing some untreated exhaust gas to bypass the activated carbon filter layer and pass directly through the gaps to the air outlet, thereby reducing the purification efficiency of the entire equipment. The existing sealing structure uses a simple compression gasket, but during the repeated pulling and installation of the drawer, the gasket is rubbed, scratched or deformed by compression, causing the sealing performance to decline rapidly after multiple uses, making it difficult to guarantee long-term airtightness.

[0005] Furthermore, the adsorption performance of activated carbon is greatly affected by the humidity of the exhaust gas. Industrial exhaust gas contains a large amount of water vapor, which competes with pollutants for adsorption sites on the surface of activated carbon, or condenses and blocks the microporous structure of activated carbon, leading to activated carbon poisoning or deactivation. This not only shortens the service life of activated carbon, but also significantly increases the operating costs of enterprises. Therefore, how to effectively dry pretreat exhaust gas before replacing the filter layer is also a problem that existing technologies urgently need to solve.

[0006] Therefore, this utility model proposes a detachable filter layer structure for a dry-type activated carbon adsorption box to address the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems in the existing dry filter activated carbon adsorption box, such as wear of the sealing gasket, reduced sealing performance, and leakage of waste gas during repeated pulling and pulling of the detachable filter layer drawer, and moisture in the waste gas causing activated carbon to become damp and deactivated, resulting in a short service life, this utility model aims to provide a detachable filter layer structure for a dry filter activated carbon adsorption box with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a detachable filter layer structure for a dry-type activated carbon adsorption box, including: a box body with an air inlet and an air outlet, a drawer for accommodating filter material and detachably installed inside the box body, a drying mechanism, and a sealing mechanism.

[0009] The drying mechanism is located inside the air inlet, and the sealing mechanism is located inside the box for installing and sealing the drawer. Furthermore, the sealing mechanism includes a fixed seat extending along the drawer's pushing direction, the fixed seat being fixedly connected to the inner wall of the box, a sealing gasket being fixed to the inner wall of the fixed seat, and a support frame being fixed below the sealing gasket on the inner wall of the fixed seat; a groove is provided at the bottom of the drawer to cooperate with the support frame; during the process of the drawer being pushed into the fixed seat, the bottom of the drawer is lifted by the support frame, making the drawer higher than the sealing gasket, and when the drawer reaches the predetermined installation position, the groove aligns with the support frame, the drawer falls due to gravity, causing the support frame to embed into the groove, and the bottom edge of the drawer presses against the sealing gasket; the drying mechanism includes a fixed ring, the fixed ring being fixed at the opening of the air inlet, a spiral plate being fixed to the inner wall of the fixed ring, a connecting ring being fixed to the rear end of the fixed ring, a sponge tube being fixed to the rear end of the connecting ring, and guide ribs being fixed to the inner wall of the sponge tube.

[0010] Preferably, a limiting plate is fixed to the top of the entrance end of the fixed seat. The limiting plate is used to guide and restrict the position of the drawer when the drawer is pushed into the fixed seat.

[0011] Preferably, the inner wall of the support frame is fixed with a fixed shaft along its length, and the fixed shaft is used to support the sliding when the drawer is lifted.

[0012] Preferably, an anti-wear pad is fitted on the fixed shaft, and the outer peripheral surface of the anti-wear pad slides in contact with the bottom surface of the drawer to reduce sliding wear when the drawer is pushed in.

[0013] Preferably, the sealing gasket has a through hole, and the support frame passes through the through hole and is fixed to the inner wall of the fixing seat.

[0014] Preferably, the removable filter layer structure of the dry filter activated carbon adsorption box further includes a screw, and the drawer has an exposed portion operable from the outside of the box body, the screw passing through the exposed portion to detachably fix the drawer to the outer wall of the box body.

[0015] Preferably, a dehumidifying screen is fixed to the inner wall of the air inlet. The dehumidifying screen is located downstream of the airflow of the drying mechanism and upstream of the airflow of the drawer, and is used to perform secondary dehumidification of the exhaust gas to prevent water vapor impact.

[0016] Preferably, a baffle is fixed at the rightmost end of the inner wall of the box and on the airflow path of the air outlet. The baffle is used to restrict the direction of exhaust gas flow, forcing the exhaust gas to pass through the drawer for filtration before bypassing the baffle and entering the air outlet.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting a sealing mechanism consisting of a fixed base, a support frame, a sealing gasket, and a groove at the bottom of the drawer, allows the drawer to be lifted by the support frame during the pushing process, and then fall down under its own weight to press the sealing gasket. This solves the problem in the prior art where the sealing gasket is repeatedly rubbed during the installation of detachable drawers, resulting in wear of the sealing gasket, decreased sealing performance, and leakage of exhaust gas bypass. It avoids sliding wear of the sealing gasket during installation, uses the drawer's own weight to achieve stable and reliable pressing and sealing, extends the service life of the sealing gasket, and ensures the airtightness of the equipment for long-term use.

[0018] 2. This utility model, by setting up a drying mechanism and a dehumidifying screen, utilizes the spiral plate, sponge cylinder, and guide ribs within the drying mechanism to rotate the exhaust gas and absorb moisture. Then, it undergoes secondary drying via the dehumidifying screen. This solves the problem in the prior art where the moisture contained in the exhaust gas directly contacts the activated carbon, leading to blockage of the activated carbon micropores, reduced adsorption activity, and short service life. It achieves efficient removal of moisture in stages, ensures that the gas entering the activated carbon is highly dry, and prevents the activated carbon from becoming damp and failing, thereby significantly extending the service life of the activated carbon and ensuring adsorption efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of a detachable filter layer structure of a dry-type activated carbon adsorption box proposed in this utility model. Figure 2 This is a partial cross-sectional view of the detachable filter layer structure of a dry-type activated carbon adsorption box proposed in this utility model. Figure 3 This is a cross-sectional view of a drawer with a detachable filter layer structure in a dry-type activated carbon adsorption box according to the present invention. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the fixing seat of a detachable filter layer structure for a dry-type activated carbon adsorption box proposed in this utility model. Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a cross-sectional view of the fixing ring of a detachable filter layer structure in a dry-type activated carbon adsorption box proposed in this utility model.

[0020] Legend: 1. Air inlet; 2. Cabinet; 3. Air outlet; 4. Dehumidifier screen; 5. Baffle; 6. Drawer; 7. Sealing mechanism; 701. Fixing base; 702. Sealing gasket; 703. Limiting plate; 704. Groove; 705. Support frame; 706. Fixing shaft; 707. Anti-wear pad; 708. Through hole; 8. Screw; 9. Drying mechanism; 901. Fixing ring; 902. Spiral plate; 903. Sponge tube; 904. Guide rib; 905. Connecting ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model. Example

[0022] Please refer to Figures 1 to 7 This utility model provides a detachable filter layer structure for a dry filter activated carbon adsorption box, aiming to solve the problems in the prior art where the sealing performance of the detachable filter layer decreases after repeated disassembly and assembly, leading to exhaust gas leakage, and the deactivation of activated carbon due to moisture.

[0023] Please refer to Figure 1 and Figure 2 A detachable filter layer structure of a dry-type activated carbon adsorption box includes a box body 2 and a drawer 6 detachably installed inside the box body 2. The box body 2 has an air inlet 1 and an air outlet 3. A drying mechanism 9 is disposed inside the air inlet 1 and is used to pre-dehumidify the exhaust gas before it enters the box body 2. A sealing mechanism 7 is disposed inside the box body 2 and is used to install and seal the drawer 6 to prevent exhaust gas from leaking through the gap between the drawer 6 and the box body 2. The rightmost end of the inner wall of the box body 2 is located on the airflow path of the air outlet 3. A baffle 5 is fixedly installed to restrict the direction of exhaust gas flow, forcing the exhaust gas to pass through the drawer 6 for filtration before bypassing the baffle 5 and entering the air outlet 3. A dehumidifying screen 4 is fixedly installed on the inner wall of the air inlet 1. The dehumidifying screen 4 is located downstream of the airflow of the drying mechanism 9 and upstream of the airflow of the drawer 6. It is used to perform secondary dehumidification of the exhaust gas to prevent water vapor impact. The drawer 6 has an exposed part that can be operated from the outside of the housing 2. The structure also includes screws 8, which pass through the exposed part of the drawer 6 to detachably fix the drawer 6 to the outer wall of the housing 2.

[0024] Please refer to Figures 2 to 7The sealing mechanism 7 includes a fixed seat 701 extending along the push-in direction of the drawer 6. The fixed seat 701 is fixedly connected to the inner wall of the housing 2. A sealing gasket 702 is fixed to the inner wall of the fixed seat 701. A through hole 708 is provided on the sealing gasket 702. A support frame 705 is also fixed to the inner wall of the fixed seat 701 below the sealing gasket 702. The support frame 705 passes through the through hole 708 and is fixed to the inner wall of the fixed seat 701. A limiting plate 703 is fixed to the top of the entrance end of the fixed seat 701. The limiting plate 703 is used to guide and restrict the position of the drawer 6 when it is pushed into the fixed seat 701. A fixed shaft 706 is fixed along the length direction on the inner wall of the support frame 705. An anti-wear pad 707 is sleeved on the fixed shaft 706. At the same time, the drawer... The bottom of the drawer 6 has a groove 704 that mates with the support frame 705. In the assembled state, when the drawer 6 is pushed into the fixing seat 701, the bottom of the drawer 6 is lifted by the support frame 705, making the drawer 6 higher than the sealing gasket 702. At this time, the outer peripheral surface of the anti-wear pad 707 slides in contact with the bottom surface of the drawer 6 to reduce the sliding wear when the drawer 6 is pushed in. When the drawer 6 reaches the predetermined installation position, the groove 704 aligns with the support frame 705, and the drawer 6 falls due to gravity, causing the support frame 705 to embed into the groove 704. The bottom edge of the drawer 6 presses against the sealing gasket 702, ensuring that the drawer 6 will not rub against the sealing gasket 702 during installation, and achieving a reliable seal by its own weight after installation.

[0025] As a preferred embodiment, for guiding and positioning drawer 6, please refer to... Figure 5 A limiting plate 703 is fixed to the top of the entrance end of the fixed seat 701. The limiting plate 703 is used to guide and restrict the position of the drawer 6 when the drawer 6 is pushed into the fixed seat 701.

[0026] As a preferred embodiment, in order to support the sliding of drawer 6 when drawer 6 is lifted, please refer to... Figure 5 The inner wall of the support frame 705 is fixed with a fixed shaft 706 along the length direction.

[0027] As a preferred embodiment, to reduce sliding wear when the drawer 6 is pushed in, please refer to... Figure 6 An anti-wear pad 707 is fitted on the fixed shaft 706, and the outer peripheral surface of the anti-wear pad 707 slides in contact with the bottom surface of the drawer 6.

[0028] As a preferred embodiment, in order to achieve the insertion and fixation of the support frame 705, please refer to... Figure 5 A through hole 708 is provided on the sealing gasket 702, and the support frame 705 passes through the through hole 708 and is fixed to the inner wall of the fixing seat 701.

[0029] As a preferred embodiment, in order to detachably fix drawer 6 to box 2, please refer to... Figure 2The structure also includes screws 8, and drawer 6 has an exposed portion operable from the outside of the box 2. Screws 8 pass through the exposed portion of drawer 6 to detachably fix drawer 6 to the outer wall of box 2.

[0030] As a preferred embodiment, in order to perform secondary dehumidification of the exhaust gas to prevent water vapor impact, please refer to... Figure 1 A dehumidifying screen 4 is fixed to the inner wall of the air inlet 1. The dehumidifying screen 4 is located downstream of the airflow of the drying mechanism 9 and upstream of the airflow of the drawer 6.

[0031] As a preferred embodiment, in order to force the exhaust gas to pass through drawer 6 for filtration, please refer to... Figure 1 At the far right end of the inner wall of the housing 2, and on the airflow path of the air outlet 3, there is a baffle 5. The baffle 5 is used to restrict the direction of exhaust airflow, forcing the exhaust gas to pass through the drawer 6 for filtration before it can bypass the baffle 5 and enter the air outlet 3.

[0032] Working principle: The waste gas to be treated enters the equipment through the air inlet 1. The waste gas first enters the drying mechanism 9 set in the air inlet 1. The fixed ring 901 fixed at the opening of the air inlet 1 restricts the flow direction of the waste gas, allowing the waste gas to spiral forward along the spiral plate 902 fixed on the inner wall of the fixed ring 901. At the same time, a connecting ring 905 is fixed to the rear end of the fixed ring 901, and a sponge cylinder 903 is fixed to the rear end of the connecting ring 905. When the waste gas enters the sponge cylinder 903, the guide ribs 904 fixed on the inner wall of the sponge cylinder 903 guide the flow. Under the action of centrifugal force, the water vapor in the waste gas adheres to the inner wall of the sponge cylinder 903 and is absorbed by the sponge cylinder 903. When the sponge cylinder 903 fails, the sponge cylinder 903 is removed from the fixed ring 901 and replaced using the connecting ring 905. This stage of drying removes a large amount of water vapor. The exhaust gas, after being pretreated by the drying mechanism 9, then undergoes secondary filtration through the dehumidifying mesh 4 set on the inner wall of the air inlet 1 to remove residual water vapor in the exhaust gas and prevent water vapor from reacting with the activated carbon and reducing the activity of the activated carbon. The filtered and dried exhaust gas enters the box 2 connected to the right side of the air inlet 1 and moves to the right. The baffle 5 set at the rightmost end of the inner wall of the box 2 restricts the flow of exhaust gas. The baffle 5 forces the exhaust gas to pass through the drawer 6 for filtration before it can bypass the baffle 5 and enter the air outlet 3 connected to the right end of the box 2 and be discharged outward. During the process of the exhaust gas passing through the drawer 6 containing activated carbon, pollutants are adsorbed, thereby achieving purification. When replacing the activated carbon in drawer 6, remove the screws 8 connecting the housing 2 and drawer 6, pull drawer 6 outwards, replace the internal activated carbon, and then reinstall drawer 6 into housing 2. Secure the exposed portion of drawer 6 to the outer wall of housing 2 using screws 8. When inserting the refilled drawer 6 into the sealing mechanism 7, first align drawer 6 with the limiting plate 703 fixed to the top of the fixing seat 701, then push drawer 6 inwards. The bottom of drawer 6 is lifted by the support frame 705 fixed to the inner wall of the fixing seat 701, allowing the bottom of drawer 6 to tilt forward under the support of the anti-wear pad 707 on the support frame 705, thus preventing wear. The pad 707 slides in contact with the bottom surface of the drawer 6, reducing sliding wear. When the drawer 6 reaches the predetermined installation position, the groove 704 on the bottom of the drawer 6 aligns with the support frame 705. The drawer 6 falls due to gravity, causing the support frame 705 to embed into the groove 704. At this time, the drawer 6 is no longer supported by the support frame 705, but relies on its own weight to press the sealing pad 702. The sealing pad 702 becomes tighter due to the pressure, sealing the edge of the drawer 6 and preventing exhaust gas from passing through the gap between the drawer 6 and the fixing seat 701. Thus, the weight of the drawer 6 is used to increase the sealing performance, ensuring the sealing performance of the fixing structure when the drawer 6 is disassembled for a long time.

Claims

1. A detachable filter layer structure for a dry-type activated carbon adsorption box, comprising: The box (2), drawer (6), drying mechanism (9) and sealing mechanism (7) are provided. The box (2) is provided with an air inlet (1) and an air outlet (3). The drawer (6) is used to hold filter material and is detachably installed in the box (2). The drying mechanism (9) is located inside the air inlet (1), and the sealing mechanism (7) is located inside the housing (2) for installing and sealing the drawer (6). The sealing mechanism (7) includes a fixing seat (701) extending along the pushing direction of the drawer (6). The fixing seat (701) is fixedly connected to the inner wall of the housing (2). A sealing gasket (702) is fixed to the inner wall of the fixing seat (701). A support frame (705) is also fixed to the inner wall of the fixing seat (701) below the sealing gasket (702). The bottom of the drawer (6) has an opening. There is a groove (704) that mates with the support frame (705). When the drawer (6) is pushed into the fixed seat (701), the bottom of the drawer (6) is lifted by the support frame (705), so that the drawer (6) is higher than the sealing gasket (702). When the drawer (6) reaches the predetermined installation position, the groove (704) aligns with the support frame (705). The drawer (6) falls due to gravity, so that the support frame (705) is embedded in the groove (704). The bottom edge of the drawer (6) presses against the sealing gasket (702).

2. The detachable filter layer structure of the dry filtration activated carbon adsorption box according to claim 1, characterized in that, The drying mechanism (9) includes a fixing ring (901), which is fixed at the opening of the air inlet (1). A spiral plate (902) is fixed on the inner wall of the fixing ring (901). A connecting ring (905) is fixed at the rear end of the fixing ring (901). A sponge tube (903) is fixed at the rear end of the connecting ring (905). A guide rib (904) is fixed on the inner wall of the sponge tube (903).

3. The detachable filter layer structure of the dry filtration activated carbon adsorption box according to claim 1, characterized in that, A limiting plate (703) is fixed to the top of the entrance end of the fixed seat (701). The limiting plate (703) is used to guide and restrict the position of the drawer (6) when the drawer (6) is pushed into the fixed seat (701).

4. The detachable filter layer structure of a dry-filter activated carbon adsorption box according to claim 1, characterized in that, The inner wall of the support frame (705) is fixed with a fixed shaft (706) along the length direction, and the fixed shaft (706) is used to support the sliding when the drawer (6) is lifted.

5. The detachable filter layer structure of a dry-filter activated carbon adsorption box according to claim 4, characterized in that, The fixed shaft (706) is fitted with an anti-wear pad (707), and the outer peripheral surface of the anti-wear pad (707) slides in contact with the bottom surface of the drawer (6) to reduce the sliding wear when the drawer (6) is pushed in.

6. The detachable filter layer structure of a dry-filter activated carbon adsorption box according to claim 1, characterized in that, The sealing gasket (702) has a through hole (708), and the support frame (705) passes through the through hole (708) and is fixed to the inner wall of the fixing seat (701).

7. The detachable filter layer structure of a dry-filter activated carbon adsorption box according to claim 1, characterized in that, The structure also includes screws (8), the drawer (6) having an exposed portion operable from the outside of the box (2), the screws (8) passing through the exposed portion to detachably fix the drawer (6) to the outer wall of the box (2).

8. The detachable filter layer structure of a dry-filter activated carbon adsorption box according to claim 2, characterized in that, The inner wall of the air inlet (1) is fixed with a dehumidifying mesh (4). The dehumidifying mesh (4) is located downstream of the airflow of the drying mechanism (9) and upstream of the airflow of the drawer (6). It is used to perform secondary dehumidification of the exhaust gas to prevent water vapor impact.

9. The detachable filter layer structure of a dry-filter activated carbon adsorption box according to claim 1, characterized in that, At the rightmost end of the inner wall of the box (2) and on the airflow path of the air outlet (3), there is a baffle (5). The baffle (5) is used to restrict the direction of exhaust gas flow, forcing the exhaust gas to pass through the drawer (6) for filtration before bypassing the baffle (5) and entering the air outlet (3).

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