Exhaust gas discharge pipe device with backflow prevention structure

Abstract

The utility model relates to waste gas treatment field discloses a kind of waste gas discharge pipeline devices with anti-backflow structure, including connecting pipeline, the inside sliding connection of connecting pipeline has anti-backflow mechanism, the inside fixed connection rotating mechanism of connecting pipeline, the inside fixed connection of connecting pipeline has filter adsorption cavity, the anti-backflow mechanism includes conical block, the inside of connecting pipeline is slidably connected in the outside of conical block, the rear side fixed connection of conical block has spring, the inside of connecting pipeline is equipped with front side narrow pipeline, the side of the front side narrow pipeline of connecting pipeline is equipped with wide pipeline, the side of the front side narrow pipeline of connecting pipeline is equipped with rear side narrow pipeline, in the utility model, when gas flows through wide pipeline, conical block is pushed to rear side narrow pipeline direction, gas is discharged smoothly, if gas backflow, conical block slides to front side narrow pipeline and blocks front side narrow pipeline, prevent gas backflow.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment, and in particular to a waste gas emission pipeline device with an anti-backflow structure. Background Technology

[0002] In chemical production, toxic and harmful gases are often generated. If the waste gas is not effectively discharged, it will pollute the indoor air due to backflow and backflow in the pipeline. Waste gas discharge pipelines with anti-backflow structure can ensure that the waste gas always maintains unidirectional flow during the discharge process, prevent the waste gas from flowing back into the production area, and ensure the safety of the production process and the protection of the environment.

[0003] The structure of an exhaust gas emission pipeline device with an anti-backflow structure includes a cone block, a spring, etc. The working principle of the exhaust gas emission pipeline device with an anti-backflow structure is to ensure that the exhaust gas can only flow in one direction through anti-backflow devices such as one-way valves, and to automatically cut off the airflow when backflow occurs, thereby protecting the equipment, the environment and the safety of operators.

[0004] In the prior art, some exhaust gas emission pipe devices adopt a simple exhaust pipe design to discharge indoor exhaust gas to the outside. However, under certain airflow conditions, odors and harmful gases in the outdoor air may flow back into the room, affecting indoor air quality and posing a threat to the health of people inside. Therefore, an exhaust gas emission pipe device with an anti-backflow structure is proposed to solve the above problems. Utility Model Content

[0005] This utility model proposes a waste gas emission pipeline device with an anti-backflow structure, which aims to improve the problem that some existing devices cannot prevent outdoor odors and harmful gases from flowing back when emitting gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A waste gas emission pipeline device with an anti-backflow structure includes a connecting pipe, an anti-backflow mechanism slidably connected inside the connecting pipe, a rotating mechanism fixedly connected to the inner side of the connecting pipe, and a filter adsorption chamber fixedly connected to the inner side of the connecting pipe. The anti-backflow mechanism includes a conical block, the outer side of which is slidably connected inside the connecting pipe, and a spring fixedly connected to the rear side of the conical block. A front narrow pipe is formed inside the connecting pipe, a wide pipe is formed on the side of the connecting pipe close to the front narrow pipe, and a rear narrow pipe is formed on the side of the connecting pipe away from the front narrow pipe. A filter assembly is slidably connected inside the filter adsorption chamber.

[0008] As a further description of the above technical solution:

[0009] The filter assembly includes a sliding plate, the outer side of which slides inside the filter adsorption chamber, and multiple filter plates are fixedly connected to the bottom of the sliding plate.

[0010] As a further description of the above technical solution:

[0011] A connecting cover plate is fixedly connected to the rear side of the sliding plate, and a bolt is threadedly connected to the inside of the sliding plate.

[0012] As a further description of the above technical solution:

[0013] The rotating mechanism includes two semi-circular shells, the rear side of which is fixedly connected to the front side of the connecting pipe, and a rotating ball tube is rotatably connected inside the semi-circular shell.

[0014] As a further description of the above technical solution:

[0015] The semi-circular outer shell is fixedly connected to a fixing ring on the outside, and the two fixing rings are internally threaded with multiple bolts.

[0016] As a further description of the above technical solution:

[0017] The outer side of the connecting pipe is in contact with the inside of the semi-circular outer shell, and the outer side of the filter plate is in contact with the inner side of the filter adsorption chamber.

[0018] As a further description of the above technical solution:

[0019] The external thread of the bolt is connected to the inside of the connecting cover plate, and the outer side of the spring is in contact with the inner side of the connecting pipe.

[0020] As a further description of the above technical solution:

[0021] The front side of the conical block contacts the rear side of the front narrow pipe, and the rear side of the spring contacts the front side of the rear narrow pipe.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the gas passes through the filter adsorption chamber and is filtered by multiple internal filter plates. When the gas flows through the wide pipe, it pushes the cone block towards the narrow pipe at the rear, and the gas is discharged smoothly. If the gas flows back, the cone block slides towards the narrow pipe at the front to block the narrow pipe at the front, preventing the gas from flowing back. The anti-backflow mechanism can effectively prevent odors and other harmful gases from flowing back into the room through the pipe.

[0024] 2. In this utility model, the fixing ring fixes the two semi-circular shells with bolts. Rotating the ball tube drives the connecting pipe at the front end to rotate inside the spherical shell. The direction of rotation can be adjusted. The pipe can be adjusted according to the position and direction of the exhaust port to achieve accurate connection, which can reduce the risk of air leakage at the pipe connection and ensure that the exhaust gas can be discharged efficiently. Attached Figure Description

[0025] Figure 1 This is a perspective view of a waste gas emission pipeline device with an anti-backflow structure proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the rotating ball tube of a waste gas emission pipeline device with an anti-backflow structure proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Connecting pipe; 2. Anti-backflow mechanism; 3. Conical block; 4. Spring; 5. Front narrow pipe; 6. Wide pipe; 7. Rear narrow pipe; 8. Filter adsorption chamber; 9. Sliding plate; 10. Filter plate; 11. Connecting cover plate; 12. Bolt one; 13. Rotating mechanism; 14. Semi-circular outer shell; 15. Fixing ring; 16. Bolt two; 17. Rotating ball tube. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 2 to 4An embodiment of this utility model provides: a waste gas emission pipeline device with an anti-backflow structure, including a connecting pipe 1, the outer side of the connecting pipe 1 being in contact with the inside of a semi-circular outer shell 14, the connecting pipe 1 being the main body of the device, mainly used to transport waste gas from the source to the subsequent treatment device, an anti-backflow mechanism 2 being slidably connected inside the connecting pipe 1, the anti-backflow mechanism 2 being used to prevent waste gas from flowing back during the emission process, a rotating mechanism 13 being fixedly connected to the inner side of the connecting pipe 1, the rotating mechanism 13 being used to control and adjust the docking direction of the rear side of the connecting pipe 1, and a filter adsorption chamber 8 being fixedly connected to the inner side of the connecting pipe 1;

[0033] The anti-backflow mechanism 2 includes a conical block 3, which is externally slidably connected to the inside of the connecting pipe 1. The front side of the conical block 3 contacts the rear side of the front narrow pipe 5. The function of the conical block 3 is to control the direction of exhaust gas flow. When the exhaust gas flow direction is correct, the conical block 3 is pushed towards the rear narrow pipe 7, allowing the exhaust gas to pass smoothly through the pipe and be discharged. When the exhaust gas attempts to flow back, the conical block 3 is pressed tightly against the front narrow pipe 5 by the rebound action of the spring 4, sealing the front narrow pipe 5 and preventing exhaust gas backflow. A spring 4 is fixedly connected to the rear side of the conical block 3, and the outer side of the spring 4 contacts the inner side of the connecting pipe 1. The rear side contacts the front side of the rear narrow pipe 7. The function of the spring 4 is to provide the necessary rebound force so that the cone block 3 can maintain a sealed state when there is no external force, preventing the backflow of exhaust gas. The front narrow pipe 5 is opened inside the connecting pipe 1. A wide pipe 6 is opened on the side of the connecting pipe 1 close to the front narrow pipe 5. The wide pipe 6 is used to allow the gas to flow out smoothly. A rear narrow pipe 7 is opened on the side of the connecting pipe 1 away from the front narrow pipe 5. The front narrow pipe 5 and the rear narrow pipe 7 are used to cooperate with the cone block 3 when the exhaust gas flows to prevent the backflow of exhaust gas and ensure the normal operation of the anti-backflow mechanism 2.

[0034] A filter assembly is slidably connected inside the filter adsorption chamber 8. The filter adsorption chamber 8 is used to collect and treat pollutants in the exhaust gas. Harmful components in the exhaust gas are filtered through the internal filter plates 10. The filter assembly includes a sliding plate 9. The outer side of the sliding plate 9 slides inside the filter adsorption chamber 8. The sliding plate 9 drives the sliding of multiple filter plates 10, allowing for quick replacement of the filter plates 10. The sliding plate 9 is used to drive the multiple filter plates 10 connected at the bottom to slide. Multiple filter plates 10 are fixedly connected to the bottom of the sliding plate 9. The main function of the filter plates 10 is to adsorb harmful substances in the exhaust gas. The outer side of the filter plates 10 is in contact with the inner side of the filter adsorption chamber 8. A connecting cover plate 11 is fixedly connected to the rear side of the sliding plate 9. Pulling the connecting cover plate 11 can drive the sliding plate 9 and the multiple filter plates 10 at the bottom to slide outward for disassembly, replacement and cleaning. A bolt 12 is threaded inside the sliding plate 9. The outer thread of the bolt 12 is connected to the inside of the connecting cover plate 11. The bolt 12 is used to fix the sliding plate 9, multiple filter plates 10 and connecting cover plate 11 after disassembly and replacement.

[0035] Reference Figures 1 to 2 The rotating mechanism 13 includes two semi-circular shells 14. The rear side of the semi-circular shells 14 is fixedly connected to the front side of the connecting pipe 1. The two semi-circular shells 14 enclose the rotating ball tube 17 inside. The rotating ball tube 17 can rotate inside the two semi-circular shells 14. The rotating ball tube 17 is rotatably connected inside the semi-circular shells 14. By rotating the connecting pipe 1 at the front end of the rotating ball tube 17, the rotating ball tube 17 can be driven to rotate inside the semi-circular shells 14. The airflow path through the connecting pipe 1 can be adjusted accordingly, and the docking position of the connecting pipe 1 at the end of the rotating ball tube 17 can also be adjusted. The outer side of the semi-circular shells 14 is fixedly connected to a fixing ring 15. The inner threads of the two fixing rings 15 are connected to multiple bolts 16. The two fixing rings 15 fix the two semi-circular shells 14 together and fix them together with bolts 16. By unscrewing the bolts, the two semi-circular shells 14 can be separated to replace the front pipe.

[0036] Working principle: After the exhaust gas enters the connecting pipe 1 from the source, it first flows through the filter adsorption chamber 8. Multiple filter plates 10 at the bottom of the sliding plate 9 inside the chamber, through an activated carbon adsorption layer and a filter membrane, intercept and adsorb pollutants such as dust and harmful gases in the exhaust gas. The purified airflow continues to flow towards the rear end of the pipe. The multiple filter plates 10 are connected to the top sliding plate 9, and the sliding plate 9 is connected to the rear connecting cover plate 11. By unscrewing bolt 12, the connecting cover plate 11 can be pulled to disassemble the sliding plate 9 and the multiple filter plates 10 at the bottom for replacement and cleaning. When the airflow passes through the anti-backflow mechanism 2 in the forward direction, the airflow pressure pushes the cone block 3 to move towards the rear narrow pipe 7. The cone block 3 disengages from the sealing surface of the front narrow pipe 5. At this time, the wide pipe 6, the front narrow pipe 5, and the rear narrow pipe 7 form a through channel, and the exhaust gas is smoothly discharged to the subsequent treatment device. If there is a tendency for exhaust gas to backflow, the change in airflow direction causes the cone block 3 to lose its forward thrust. The rebound force of the spring 4 immediately pushes the cone block 3 forward, so that its conical surface is tightly attached to the inner wall of the front narrow pipe 5, blocking the backflow channel and preventing exhaust gas from flowing back in.

[0037] In the pipe connection and direction adjustment process, the rotating ball tube 17 of the rotating mechanism 13 can rotate freely within the two semi-circular shells 14. By manually adjusting the direction of the front connecting pipe 1, the rotating ball tube 17 is driven to swing within the spherical cavity until the pipe interface and the exhaust port are aligned at an angle. The fixing ring 15 is fixed to the two semi-circular shells 14 by bolt 2 16 to ensure that the rotating ball tube 17 is positioned stably and to avoid air leakage. If it is necessary to replace the connecting pipe 1 on the front side of the rotating ball tube 17, the fixing ring 15 and the two semi-circular shells 14 can be disassembled by unscrewing bolt 2 16.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An exhaust gas discharge duct arrangement with backflow prevention, comprising a connecting duct (1), characterized in that: The connecting pipe (1) is slidably connected to an anti-backflow mechanism (2), the connecting pipe (1) is fixedly connected to a rotating mechanism (13), and the connecting pipe (1) is fixedly connected to a filter adsorption chamber (8). The anti-backflow mechanism (2) includes a conical block (3), the outside of which is slidably connected to the inside of the connecting pipe (1). A spring (4) is fixedly connected to the rear side of the conical block (3). A front narrow pipe (5) is opened inside the connecting pipe (1). A wide pipe (6) is opened on the side of the connecting pipe (1) close to the front narrow pipe (5). A rear narrow pipe (7) is opened on the side of the connecting pipe (1) away from the front narrow pipe (5). A filter assembly is slidably connected inside the filter adsorption chamber (8).

2. A waste gas exhaust duct apparatus with a backflow prevention structure according to claim 1, characterized by: The filter assembly includes a sliding plate (9), the outer side of which slides inside the filter adsorption chamber (8), and a plurality of filter plates (10) are fixedly connected to the bottom of the sliding plate (9).

3. A waste gas exhaust duct apparatus with a backflow prevention structure according to claim 2, characterized by: A connecting cover plate (11) is fixedly connected to the rear side of the sliding plate (9), and a bolt (12) is threadedly connected to the inside of the sliding plate (9).

4. A waste gas exhaust duct apparatus with a backflow prevention structure according to claim 2, characterized by: The rotating mechanism (13) includes two semi-circular shells (14), the rear side of which is fixedly connected to the front side of the connecting pipe (1), and a rotating ball tube (17) is rotatably connected inside the semi-circular shell (14).

5. A waste gas exhaust duct apparatus with a backflow prevention structure according to claim 4, characterized by: The semi-circular outer shell (14) is fixedly connected to a fixing ring (15), and the two fixing rings (15) are internally threaded with multiple bolts (16).

6. The exhaust gas emission pipeline device with anti-backflow structure according to claim 4, characterized in that: The outer side of the connecting pipe (1) is in contact with the inside of the semi-circular outer shell (14), and the outer side of the filter plate (10) is in contact with the inner side of the filter adsorption chamber (8).

7. The exhaust gas emission pipeline device with anti-backflow structure according to claim 3, characterized in that: The external thread of the bolt (12) is connected to the inside of the connecting cover plate (11), and the outer side of the spring (4) is in contact with the inner side of the connecting pipe (1).

8. The exhaust gas emission pipeline device with anti-backflow structure according to claim 1, characterized in that: The front side of the conical block (3) is in contact with the rear side of the front narrow pipe (5), and the rear side of the spring (4) is in contact with the front side of the rear narrow pipe (7).

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