Mildew-free activated carbon box for waste gas treatment
By installing a drain pipe and a check valve inside the activated carbon box, the problems of mold growth and water accumulation in the activated carbon box were solved, extending the service life of the activated carbon, reducing the replacement frequency, and improving the operational stability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU YANGTIAN WANYING PHARM CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-05
AI Technical Summary
Existing activated carbon boxes are prone to mold and water accumulation during use, resulting in frequent activated carbon replacement, which affects equipment efficiency and environmental inspections.
Install a drain pipe and a check valve inside the activated carbon box to ensure that water is drained in a timely manner and to prevent mold growth.
It effectively prevents mold growth in the activated carbon box, extends the service life of activated carbon, reduces the replacement frequency, and improves the stability of equipment operation.
Smart Images

Figure CN224194413U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to pharmaceutical production, and more specifically, to a mold-free activated carbon box for waste gas treatment. Background Technology
[0002] Pharmaceutical manufacturing companies inevitably generate wastewater and waste gas during production. Wastewater and waste gas treatment equipment is an important target for environmental protection inspections. Activated carbon boxes are crucial equipment for treating waste gas and are therefore a key target for environmental spot checks. Consequently, companies regularly inspect activated carbon boxes used for treating waste gas to check for mold growth and the severity of the mold growth.
[0003] The existing activated carbon boxes for treating waste gas contain activated carbon inside a box, which is then mounted on the ground using a bracket. Waste gas enters from the side of the activated carbon box, is adsorbed by the activated carbon, and then exits from the side of the activated carbon box into an exhaust duct equipped with a fan. During regular inspections, it was found that the activated carbon was moldy, and the mold was quite severe, so the frequency of activated carbon replacement needs to be increased. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a mold-free activated carbon box for waste gas treatment, which aims to improve at least one of the problems mentioned in the background art.
[0005] A mold-free activated carbon box for waste gas treatment includes a box body with an activated carbon layer inside. The box body is mounted on the ground by a support. The activated carbon layer divides the cavity formed by the box body into an upper cavity and a lower cavity. An exhaust gas inlet pipe is connected to the lower cavity, and an exhaust pipe is connected to the upper cavity. A fan is connected to the exhaust pipe. The box body is connected to at least one drain pipe. The upper end of each drain pipe is connected to the bottom of the lower cavity, and the lower end is inserted into the ground and connected to the enterprise's drainage pipe. A check valve is installed on each drain pipe.
[0006] Optionally, the check valve only allows liquid to flow from the lower chamber toward the enterprise's drainage pipe, and closes when liquid flows in the opposite direction from the enterprise's drainage pipe to the lower chamber.
[0007] Optionally, there are two drain pipes.
[0008] Optionally, the diameter of each drain pipe is 0.05 to 0.1 times the diameter of the exhaust gas inlet pipe.
[0009] Optionally, the housing is equipped with a drawer, and the activated carbon layer is placed inside the drawer.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] This invention promptly drains water generated inside the box, preventing mold growth on the activated carbon. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the background technology structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the improved structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the drainage pipe of the pump utility model;
[0016] Figure 4 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 5 This is a cross-sectional schematic diagram of the present invention;
[0018] Figure 6 This is a schematic diagram of the drain pipe of this utility model with a check valve installed.
[0019] Explanation of reference numerals in the attached diagram: 1. Box body, 2. Activated carbon layer, 3. Support, 4. Ground, 5. Upper chamber, 6. Lower chamber, 7. Exhaust gas inlet pipe, 8. Exhaust pipe, 9. Drain pipe, 10. Check valve, 11. Drawer. Detailed Implementation
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise precisely specified.
[0022] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the background technology structure of this utility model. Figure 1 In the process, the activated carbon box for treating waste gas includes a box body 1, an activated carbon layer 2 inside the box body 1, and the box body 1 is installed on the ground 4 by a bracket 3. The activated carbon layer 2 divides the cavity enclosed by the box body 1 into an upper cavity 5 and a lower cavity 6. The waste gas inlet pipe 7 is connected to the lower cavity 6, and the exhaust pipe 8 is connected to the upper cavity 5. A fan (not shown) is connected to the exhaust pipe 8.
[0025] Figure 1 During a routine inspection (once a week), the activated carbon box was found to have mold growth, and the mold growth was quite severe. Therefore, the activated carbon needs to be replaced every week or less.
[0026] To reduce the frequency of activated carbon replacement, the existing activated carbon box was improved.
[0027] Please refer to Figures 2-3 , Figure 2 This is a schematic diagram of the improved structure of this utility model. Figure 3 This is a schematic diagram of the drainage pipe of the pump utility model.
[0028] Figures 2-3In the diagram, the activated carbon box for treating waste gas includes a box body 1, with an activated carbon layer 2 inside the box body 1. The box body 1 is mounted on the ground 4 via a bracket 3. The activated carbon layer 2 divides the cavity formed by the box body 1 into an upper cavity 5 and a lower cavity 6. The waste gas inlet pipe 7 is connected to the lower cavity 6, and the exhaust pipe 8 is connected to the upper cavity 5. A fan (not shown) is connected to the exhaust pipe 8. The box body 1 is connected to a drain pipe 9. The upper end of the drain pipe 9 is connected to the bottom of the lower cavity 6, and the lower end is inserted into the ground 4 and connected to the enterprise's drainage pipe (not shown in the diagram).
[0029] Figures 2-3 During a routine inspection (once a week), it was discovered that the activated carbon box not only had mold growth on the activated carbon, but the mold was also quite severe, and there was also a large amount of water accumulation in the box. Adding a drain pipe (9) did not reduce the mold growth; instead, the water accumulation worsened.
[0030] In order to solve both the mold and water accumulation problems at the same time, Figures 2-3 The activated carbon box has been further improved.
[0031] Please refer to Figures 4-6 , Figure 4 This is a schematic diagram of the overall structure of this utility model. Figure 5 This is a cross-sectional schematic diagram of the present invention. Figure 6 This is a schematic diagram of the drain pipe of this utility model with a check valve installed.
[0032] 4- Figure 6 In the diagram, the activated carbon box for treating waste gas includes a box body 1, with an activated carbon layer 2 inside the box body 1. The box body 1 is mounted on the ground 4 via a bracket 3. The activated carbon layer 2 divides the cavity formed by the box body 1 into an upper cavity 5 and a lower cavity 6. The waste gas inlet pipe 7 is connected to the lower cavity 6, and the exhaust pipe 8 is connected to the upper cavity 5. A fan (not shown) is connected to the exhaust pipe 8. The box body 1 is connected to a drain pipe 9. The upper end of the drain pipe 9 is connected to the bottom of the lower cavity 6, and the lower end is inserted into the ground 4 and connected to the enterprise's drainage pipe. A check valve 10 is installed on the drain pipe 9. The check valve 10 only allows liquid to flow from the lower cavity 6 to the enterprise's drainage pipe (not shown in the diagram). When the liquid flows in the opposite direction from the enterprise's drainage pipe to the lower cavity 6, the check valve 10 closes.
[0033] 4- Figure 6 During regular inspections (once a week), no mold growth was found in the activated carbon boxes, thus extending the service life of the activated carbon.
[0034] In one or more embodiments of this utility model, there are two drain pipes 9, which are symmetrically installed with the longitudinal center line of the lower cavity 6 as the center.
[0035] In one or more embodiments of this utility model, to facilitate the replacement of activated carbon, the housing 1 is equipped with a drawer 11, and the activated carbon layer 2 is placed inside the drawer 11. When replacing, simply pull out the drawer 11 to replace the activated carbon. Those skilled in the art should understand that the installation technique of installing the drawer 11 on the housing 1 is common sense, and those skilled in the art can install it without creative effort.
[0036] In one or more embodiments of this utility model, in order to drain the water in the activated carbon box in a timely manner, the diameter of the drain pipe 9 is 0.05 to 0.1 times the diameter of the exhaust gas inlet pipe 7.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A mold-resistant activated carbon box for waste gas treatment, comprising a box body (1), an activated carbon layer (2) disposed inside the box body (1), the box body (1) being mounted on the ground (4) via a bracket (3), the activated carbon layer (2) dividing the cavity formed by the box body (1) into an upper cavity (5) and a lower cavity (6), a waste gas inlet pipe (7) communicating with the lower cavity (6), an exhaust pipe (8) communicating with the upper cavity (5), and a fan connected to the exhaust pipe (8), characterized in that, The box (1) is connected to at least one drain pipe (9). The upper end of each drain pipe (9) is connected to the bottom of the lower cavity (6), and the lower end is inserted into the ground (4) and connected to the enterprise's drainage pipe. Each drain pipe (9) is equipped with a check valve (10).
2. The mold-free activated carbon box for waste gas treatment according to claim 1, characterized in that, The check valve (10) only allows liquid to flow from the lower chamber (6) toward the enterprise's drainage pipe. When the liquid flows in the opposite direction from the enterprise's drainage pipe to the lower chamber (6), the check valve (10) closes.
3. The mold-free activated carbon box for waste gas treatment according to claim 1, characterized in that, There are two drain pipes (9).
4. The mold-free activated carbon box for waste gas treatment according to claim 1, characterized in that, The diameter of each drain pipe (9) is 0.05 to 0.1 times the diameter of the exhaust gas inlet pipe (7).
5. The mold-free activated carbon box for waste gas treatment according to claim 1, characterized in that, The box (1) is equipped with a drawer (11), and the activated carbon layer (2) is placed inside the drawer (11).