Waste gas collecting device and building

Abstract

The waste gas collecting device comprises a main pipeline and a branch pipeline, a first inlet, an exhaust port and a liquid outlet are formed in the main pipeline, the main pipeline comprises a first slope section, the height of the first slope section is gradually increased from one end to the other end, the low end of the first slope section is communicated with the liquid outlet, and the high end of the first slope section is communicated with the exhaust port. The first inlet is positioned on the first slope section; the branch pipeline is provided with a second inlet and a branch pipe outlet, the second inlet is used for absorbing waste gas, the branch pipe outlet is connected with the first inlet, the branch pipeline comprises a second slope section, the height of the second slope section is gradually reduced in the direction towards the branch pipe outlet, and the high end of the second slope section is higher than the branch pipe outlet. According to the application, the height difference of the first slope section and the height difference of the second slope section enable the waste liquid separated in the exhaust process to flow towards the liquid outlet under the action of self gravity, so that automatic separation of the waste liquid and the waste gas is realized, backflow of the waste gas and the waste liquid is reduced, and the possibility of polluting reactants is reduced.

Description

Technical Field

[0001] The utility model relates to the field of waste gas collection and treatment equipment, in particular to a waste gas collection device and a building. Background Art

[0002] In the related art, the waste gas generated by the reactant is aggregated to the main pipeline through the branch pipelines. The reaction temperature of the reactant is higher than the ambient temperature, and the waste gas generated by the reactant condenses into waste liquid in the branch pipeline or the main pipeline. The waste liquid may flow back to the reactant along the branch pipeline and the main pipeline, causing pollution to the reactant. Therefore, there is room for improvement in how to handle the waste gas during emission. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a waste gas collection device with a clever structural design, which is conducive to reducing the backflow of waste liquid.

[0004] The utility model also provides a building equipped with the above waste gas collection device.

[0005] The waste gas collection device according to an embodiment of the utility model includes a main pipeline and a branch pipeline. The main pipeline is provided with a first inlet, an exhaust port and a liquid discharge port. The main pipeline includes a first sloping section, and the height of the first sloping section gradually increases from one end to the other end. The low end of the first sloping section is communicated with the liquid discharge port, and the high end of the first sloping section is communicated with the exhaust port. The first inlet is located on the first sloping section. The branch pipeline is provided with a second inlet and a branch pipe outlet. The second inlet is used for absorbing waste gas, and the branch pipe outlet is connected to the first inlet. The branch pipeline includes a second sloping section located between the second inlet and the branch pipe outlet. In the direction towards the branch pipe outlet, the height of the second sloping section gradually decreases, and the high end of the second sloping section is higher than the branch pipe outlet.

[0006] For the waste gas collection device according to the embodiments of the present utility model, the height difference of the first slope section can cause the waste liquid separated from the flowing waste gas to flow downward under its own gravity, which is beneficial to avoiding the residue of the waste liquid in the main pipeline, keeping the inside of the main pipeline clean, and improving the waste gas reflux situation caused by the residue of the waste liquid; the waste liquid flows from the high end of the second slope section to the branch pipe outlet at a lower position under its own gravity, and it is difficult for the waste liquid separated from the waste gas flowing through the branch pipeline to flow back through the second slope section; the exhaust port and the liquid discharge port are located at both ends of the main pipeline, and the waste liquid and waste gas can be separated and discharged in time, reducing the reflux of waste gas and waste liquid and the pollution problems caused by the reflux of waste gas and waste liquid. Only by cooperating the main pipeline and the branch pipeline can gas-liquid separation be achieved, and backflow can be prevented to a certain extent. When there are multiple waste gas generation positions, multiple branch pipelines can be set. Multiple branch pipelines can utilize the same main pipeline to achieve gas-liquid separation, so that the overall occupied space of the waste gas collection device is relatively small, and the number of branch pipelines can be easily adjusted according to the number of waste gas generation positions, with strong adaptability.

[0007] In some embodiments, the waste gas collection device further includes a check valve, and the check valve is arranged on the second slope section for preventing the air flow in the second slope section from flowing back to the second inlet.

[0008] In some embodiments, the low end of the second slope section is higher than the branch pipe outlet; the branch pipeline further includes a lead pipe connected between the low end of the second slope section and the first inlet, and in the direction from the low end of the second slope section to the first inlet, the height of the lead pipe gradually decreases.

[0009] In some embodiments, the first slope section is a straight pipe or a bent pipe; the second slope section is a straight pipe or a bent pipe.

[0010] In some embodiments, the slope of the first slope section is the ratio of the height of the first slope section to the length of the projection of the first slope section on the horizontal plane, and the slope range of the first slope section is 1‰ to 5%; the slope of the second slope section is the ratio of the height of the second slope section to the length of the projection of the second slope section on the horizontal plane, and the slope range of the second slope section is 1‰ to 5%.

[0011] In some embodiments, there are a plurality of discretely distributed branch pipelines, and a plurality of the first inlets are correspondingly arranged on the first slope section.

[0012] In some embodiments, the waste gas collection device further includes a main waste liquid discharge pipe, the upper end of the main waste liquid discharge pipe is connected to the liquid discharge port of the main pipeline, and a liquid drainage valve is arranged on the main waste liquid discharge pipe.

[0013] In some embodiments, the waste gas collection device further includes: a waste liquid bypass pipe, which is arranged in parallel with the liquid drainage valve, and both the upper end and the lower end of the waste liquid bypass pipe are connected to the main waste liquid discharge pipe; a first switch valve is provided on the waste liquid bypass pipe, and second switch valves are respectively provided above and below the liquid drainage valve on the main waste liquid discharge pipe.

[0014] The building according to an embodiment of the present invention includes a factory building and a waste gas collection device according to an embodiment of the present invention, and the factory building has a roof; the waste gas collection device is installed on the factory building, and the first slope section is installed above or below the roof, and the second slope section is installed above or below the roof.

[0015] For the building according to an embodiment of the present invention, the main pipeline and branch pipelines of the waste gas collection device can be arranged inside the building and make full use of the internal space of the building. Of course, the waste gas collection device can also be arranged outside the building to make full use of the external space of the building.

[0016] The height difference of the first slope section can cause the waste liquid separated from the flowing waste gas to flow downward under the action of its own gravity, which is beneficial to avoiding the residue of the waste liquid in the main pipeline, keeping the inside of the main pipeline clean, and is beneficial to improving the waste gas backflow situation caused by the residue of the waste liquid; the waste liquid flows from the high end of the second slope section to the lower branch pipe outlet under the action of its own gravity, and it is difficult for the waste liquid separated from the waste gas flowing through the branch pipeline to flow back through the second slope section; the exhaust port and the liquid discharge port are located at both ends of the main pipeline, and the waste liquid and waste gas can be separated and discharged in time, reducing the backflow of waste gas and waste liquid and reducing the possibility of pollution.

[0017] In some embodiments, the building further includes: at least one reaction vessel, which is installed in the factory building, and the branch pipelines are arranged in one-to-one correspondence with the reaction vessels.

[0018] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a schematic diagram of a waste gas collection device according to some embodiments of the present invention;

[0021] Figure 2 is a schematic diagram of a waste gas collection device according to other embodiments of the present invention;

[0022] Figure 3Schematic diagram of an exhaust gas collection device according to some other embodiments of the present utility model, wherein a plurality of branch pipes are arranged at intervals on the first slope section;

[0023] Figure 4 Schematic diagram of a building according to an embodiment of the present utility model.

[0024] Reference numerals:

[0025] Building 1000;

[0026] Exhaust gas collection device 100;

[0027] Main pipe 1, first inlet 11, exhaust port 12, liquid discharge port 13, first slope section 14;

[0028] Branch pipes 2, first branch pipe 201, second branch pipe 202, third branch pipe 203, fourth branch pipe 204, fifth branch pipe 205, branch pipe outlet 21, second inlet 22, second slope section 23, leading pipe 24;

[0029] Check valve 3;

[0030] Main liquid discharge pipe for waste liquid 41, liquid drainage valve 42, second switching valve 422, waste liquid bypass pipe 43, first switching valve 431;

[0031] First slope P1, second slope P2;

[0032] Workshop 500, reaction vessel 600. Detailed implementation manners

[0033] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Reference will be made below to Figures 1-4 describe an exhaust gas collection device 100 and a building 1000 according to an embodiment of the present utility model.

[0037] As Figures 1-3 shown, an exhaust gas collection device 100 according to an embodiment of the present utility model includes a main pipe 1 and a branch pipe 2.

[0038] A first inlet 11, an exhaust port 12, and a liquid discharge port 13 are provided on the main pipe 1. The main pipe 1 includes a first slope section 14, and the height of the first slope section 14 gradually increases from one end to the other end. The lower end of the first slope section 14 communicates with the liquid discharge port 13, and the upper end of the first slope section 14 communicates with the exhaust port 12. The first inlet 11 is located on the first slope section 14. Inside the first slope section 14, the exhaust gas flows from the lower part of the first slope section 14 to the higher part of the first slope section 14, and finally the exhaust gas can be discharged through the exhaust port 12 located at the upper end of the first slope section 14; if the exhaust gas is cooled during the flow process, it is easy to condense to form waste liquid, and the waste liquid flows from the higher part of the first slope section 14 to the lower part of the first slope section 14, and finally the waste liquid can be discharged through the liquid discharge port 13 located at the lower end of the first slope section 14. On the main pipe 1, the height difference of the first slope section 14 can enable the waste liquid to flow downward under the action of its own gravity, which is beneficial to avoiding the residue of the waste liquid in the main pipe 1, keeping the inside of the main pipe 1 clean, and is beneficial to improving the problem of exhaust gas backflow caused by the residue of the waste liquid.

[0039] It can be understood that in the application scenarios of the exhaust gas collection device 100, for example, when the exhaust gas collection device 100 is provided on a fermentation tank, a culture container, or a chemical reactor, these reaction vessels 600 will generate exhaust gas during use, and it is inevitable that water vapor will be mixed into the exhaust gas. Even in some application scenarios, the exhaust gas generated by the reaction vessel 600 is mainly water vapor. The exhaust gas collection device 100 uses a pipeline to collect the exhaust gas. When the exhaust gas flows in the pipeline and is cooled, its temperature decreases, and the water vapor is easy to condense to form condensed water. Usually, other components in the exhaust gas are also absorbed in the condensed water to form waste liquid.

[0040] The fluidity of the waste liquid is reduced relative to the waste gas. If the waste liquid remains in the pipeline, the gas flow path in the pipeline will become narrower, affecting gas emission. Moreover, some components in the waste gas will also dissolve in the waste liquid. If the waste liquid remains in the pipeline, some waste gas will remain in the pipeline in the form of being dissolved in the waste liquid. The longer the waste gas stays, the higher the risk of waste gas backflow. In addition, the liquid remaining in the pipeline is prone to breeding bacteria and generating new waste gas. Therefore, in the solution of this application, by means of the slope section design of the pipeline, the separation of the waste liquid and the waste gas and the discharge of the waste liquid are accelerated. The timely emptying of the waste liquid without retention helps to reduce the problem of waste gas backflow.

[0041] Of course, as is well known to those skilled in the art, even without being cooled, waste liquid is easily separated when the waste gas encounters flow resistance during flow. Based on this, in some specific embodiments of this application, a separation net or the like can be provided in the main pipeline 1. When the waste gas flows through the separation net, the waste liquid adheres to the wall, and then the waste liquid flows downward under the action of gravity. The setting of the separation net does not affect the flow of the waste gas.

[0042] The branch pipeline 2 is provided with a second inlet 22 and a branch pipe outlet 21. The second inlet 22 can absorb the waste gas, and the branch pipe outlet 21 is connected to the first inlet 11. The branch pipeline 2 includes a second slope section 23, and the second slope section 23 is located between the second inlet 22 and the branch pipe outlet 21. In the direction towards the branch pipe outlet 21, the height of the second slope section 23 gradually decreases, and the high end of the second slope section 23 is higher than the branch pipe outlet 21. The second inlet 22 absorbs the waste gas, and the waste gas flows along the branch pipeline 2. The waste gas flows from the branch pipe outlet 21 to the first inlet 11. On the second slope section 23, the waste gas condenses to form waste liquid, and the waste liquid flows from the higher part of the second slope section 23 to the lower part of the second slope section 23. Thus, the waste liquid flows from the high end of the second slope section 23 to the lower branch pipe outlet 21 under the action of its own gravity, which is beneficial to reducing the backflow of the waste liquid.

[0043] That is to say, the second inlet 22 absorbs the waste gas, and the waste gas flows along the branch pipeline 2. The waste gas can flow to the first inlet 11 connected to the branch pipe outlet 21, and finally the waste gas is discharged from the exhaust port 12; during the process of the waste gas flowing from the second inlet 22 to the exhaust port 12, the waste gas can condense into waste liquid, and the waste liquid flows from the higher part to the lower part in the waste gas collection device 100 under the action of its own gravity. For example, the waste liquid flows from the higher part of the second slope section 23 to the lower part of the second slope section 23, and the waste liquid flows from the higher part of the first slope section 14 to the lower part of the first slope section 14.

[0044] A first inlet 11 is provided on the first slope section 14. The branch outlet 21 of the branch pipe 2 is connected to the first inlet 11. In the direction towards the branch outlet 21, the height of the second slope section 23 gradually decreases. Thus, the second slope section 23 is higher than the first slope section 14, making it difficult for the waste liquid to flow backward from the first slope section 14 to the second slope section 23, reducing the backflow of the waste liquid. Moreover, through the design of the first slope section 14 and the second slope section 23 in this application, the waste gas and the waste liquid can be separated in time by their own gravity for separate treatment, which is beneficial to reducing environmental pollution.

[0045] In some solutions of the related art, the waste gas collection device is arranged in the factory area for treating the waste gas of the fermentation tank. The normal fermentation temperature is higher than the ambient temperature, and a large amount of condensed water will flow backward into the reactants during the exhaust process, increasing the risk of contamination of the reactants by miscellaneous bacteria. To solve the above problems, some technical solutions prevent the backflow of waste gas and waste liquid by setting a check valve. However, simply setting a check valve in the exhaust pipe without improving the layout form of the exhaust pipe is difficult to have an effect on a small amount of waste liquid backflow. In this application, by redesigning the branch pipe 2 and the main pipe 1 respectively and adding a slope structure to the main pipe 1 and the branch pipe 2, on the one hand, the waste gas and the waste liquid in the main pipe 1 can be separated in time, and on the other hand, it is difficult for the waste liquid in the branch pipe 2 to flow back into the reactants through the second slope section 23, which is beneficial to reducing the backflow of waste liquid and waste gas and reducing the risk of contamination of miscellaneous bacteria on the reactants.

[0046] For the waste gas collection device 100 according to the embodiment of the present utility model, the height difference of the first slope section 14 can cause the waste liquid separated from the flowing waste gas to flow downward under the action of its own gravity, which is beneficial to avoiding the waste liquid remaining in the main pipe 1, keeping the inside of the main pipe 1 clean, and improving the waste gas backflow situation caused by the remaining waste liquid; the waste liquid flows from the high end of the second slope section 23 to the lower branch outlet 21 under the action of its own gravity, and it is difficult for the waste liquid separated from the waste gas flowing through the branch pipe 2 to flow back through the second slope section 23; the exhaust port 12 and the drain port 13 are located at both ends of the main pipe 1, and the waste liquid and the waste gas can be separated and discharged, reducing the backflow of waste gas and waste liquid.

[0047] As Figures 1-3 shown, in some embodiments, the waste gas collection device 100 further includes a check valve 3. The check valve 3 is arranged on the second slope section 23, and the check valve 3 can prevent the air flow in the second slope section 23 from flowing backward to the second inlet 22. By setting the check valve 3, it is beneficial to reduce the backflow of waste liquid to the second inlet 22 and is beneficial to reducing pollution.

[0048] In summary of the above embodiments, a first inlet 11 is provided on the first slope section 14, the branch outlet 21 of the branch pipe 2 is connected to the first inlet 11, and in the direction towards the branch outlet 21, the height of the second slope section 23 gradually decreases. Thus, the second slope section 23 is higher than the first slope section 14, making it difficult for the waste liquid to flow backward from the first slope section 14 to the second slope section 23. Under the action of the check valve 3, it is beneficial to reduce the condition of waste gas backflow. When multiple branch pipes 2 are arranged in parallel on the main pipe 1, it is also beneficial to reduce the gas cross-talk between different branch pipes 2.

[0049] As Figures 1-2 shown, in some embodiments, the lower end of the second slope section 23 is higher than the branch outlet 21. The branch pipe 2 further includes a lead pipe 24, and the lead pipe 24 is connected between the lower end of the second slope section 23 and the first inlet 11. In the direction from the lower end of the second slope section 23 to the first inlet 11, the height of the lead pipe 24 gradually decreases. When the waste gas enters the lead pipe 24 from the lower end of the second slope section 23, the lower end of the second slope section 23 is higher than the position of the lead pipe 24. Thus, the waste water in the lead pipe 24 can flow to the first inlet 11 by its own gravity, which is beneficial to reducing the waste liquid backflow. At the same time, when it is inconvenient to connect between the branch pipe 2 and the main pipe 1, the lead pipe 24 can change the connection direction of the branch pipe 2, which is beneficial to reducing the pipeline detour or unstable connection.

[0050] As Figures 1-2 shown, in some specific examples, one end of the lead pipe 24 is connected to the first inlet 11, and the other end of the lead pipe 24 is connected to the lower end of the second slope section 23; the first slope section 14 has an upper pipe wall, a lower pipe wall, and a side pipe wall, and the side pipe wall is located between the upper and lower pipe walls. The lead pipe 24 can be connected to one of the upper pipe wall, the lower pipe wall, or the side pipe wall.

[0051] For example, in Figure 2 the example, the first inlet 11 is located on the upper pipe wall of the first slope section 14, and the lead pipe 24 is connected to the upper pipe wall of the first slope section 14. In examples not shown in other figures, the first inlet 11 can be located on the side pipe wall of the first slope section 14, and the lead pipe 24 is connected to the side pipe wall of the first slope section 14.

[0052] As Figures 1-2 shown, the lead pipe 24 can be a vertically arranged straight pipe or an inclined pipe. The angle between the extending direction of the lead pipe 24 and the second slope section 23 is greater than or equal to 90°.

[0053] As Figures 1-3 shown, in some embodiments, the first slope section 14 is a straight pipe or a bent pipe; the second slope section 23 is a straight pipe or a bent pipe.

[0054] Optionally, the first slope section 14 can be a straight pipe, and the second slope section 23 can be a straight pipe; optionally, the first slope section 14 can be a bent pipe, and the second slope section 23 can be a straight pipe; optionally, the first slope section 14 can be a straight pipe, and the second slope section 23 can be a bent pipe; optionally, the first slope section 14 can be a bent pipe, and the second slope section 23 can be a bent pipe. Combining the above embodiments, the exhaust port 12 of the exhaust gas collection device 100 is arranged above the reactants. The arrangement of the exhaust gas collection device 100 needs to utilize the space above the reactants. Compared with a straight pipe with a single shape and structure, by setting the guiding pipe 24 to change the connection direction of the branch pipe 2 and by changing the shape of the first slope section 14 or the second slope section 23, the pipes of the exhaust gas collection device 100 can be arranged in a staggered manner within the space above the reactants, and the space above the reactants can be fully utilized.

[0055] Among them, the second slope section 23 can preferably be a straight pipe, which can reduce costs.

[0056] Among them, the specific shape of the first slope section 14 can be determined by its surrounding environment and is also affected by the positions of the branch pipes 2. For example, when the first slope section 14 is connected to multiple branch pipes 2 and the multiple branch pipes 2 are arranged in a straight line, the first slope section 14 can be selected as a straight pipe at this time to reduce costs. When the positions of the multiple branch pipes 2 cannot be arranged in a straight line, according to the on-site layout requirements, the first slope section 14 can adopt an S shape or other shapes, which are not limited here.

[0057] As Figure 1 shown, in some embodiments, the slope of the first slope section 14 is the ratio of the height of the first slope section 14 to the length of the projection of the first slope section 14 on the horizontal plane. The slope range of the first slope section 14 is 1‰ to 5%. The first slope P1 here can be 1‰ or 2‰ or 3‰ or 3.2‰ or 3.4‰ or 4.1‰ or 4.3‰ or 5.0‰ or 8‰ or 1% or 2% or 5%. Of course, the first slope P1 can also be other values between 1‰ and 5%, which will not be listed one by one here. The slope of the second slope section 23 is the ratio of the height of the second slope section 23 to the length of the projection of the second slope section 23 on the horizontal plane. The slope range of the second slope section 23 is 1‰ to 5%. The second slope P2 here can be 1‰, 2‰ or 3‰ or 3.2‰ or 3.4‰ or 4.1‰ or 4.3‰ or 5.0‰ or 8‰ or 1% or 2% or 5%. Of course, the second slope P2 can also be other values between 1‰ and 5%, which will not be listed one by one here.

[0058] In some preferred examples, the slope of the first slope section 14 is the same as the slope of the second slope section 23, and both slopes can be 3‰ or 3.2‰ or 3.4‰ or 4.1‰ or 4.3‰ or 5.0‰.

[0059] In some alternative examples, the slope of the first slope section 14 is different from the slope of the second slope section 23.

[0060] As Figure 3 shown, in some embodiments, there are multiple discrete branch pipes 2, and multiple discrete first inlets 11 are correspondingly provided on the first slope section 14 of the main pipe 1. The waste gas collection device 100 can collect the waste gas of multiple reactants simultaneously, which improves the utilization efficiency of the main pipe 1, is conducive to reducing the layout of the main pipe 1 and lowering costs. And in combination with the above embodiments, multiple first inlets 11 are provided on the first slope section 14 of the main pipe 1, the first inlet 11 is connected to the branch pipe outlet 21 of the branch pipe 2, and a check valve 3 is provided between the branch pipe outlet 21 and the second inlet 22 of the branch pipe 2. Thus, when multiple reactants are in different working states, the waste gas generated by the reactants changes the pressure in the main pipe 1, and the check valve 3 can reduce the waste gas backflow, which is conducive to avoiding excessive pressure difference in the space where the reactants are located and is conducive to maintaining the stability of the reactant fermentation.

[0061] In some specific examples, such as Figure 3 shown, the branch pipe 2 includes a first branch pipe 201, a second branch pipe 202, a third branch pipe 203, a fourth branch pipe 204 and a fifth branch pipe 205. Multiple first inlets 11 are correspondingly provided on the first slope section 14 and are in one-to-one correspondence with the branch pipe 2. The waste gas collection device 100 can collect the waste gas of multiple reactants simultaneously.

[0062] Among them, the lower end of the second slope section 23 on the first branch pipe 201 is connected to the first slope section 14 of the main pipe 1, and the lower end of the second slope section 23 on the first branch pipe 201 is higher than the first slope section 14 of the main pipe 1. Similarly, the second slope section 23 of the second branch pipe 202, the second slope section 23 of the third branch pipe 203, the second slope section 23 of the fourth branch pipe 204 and the second slope section 23 of the fifth branch pipe 205 are all higher than the first slope section 14 of the main pipe 1. The waste liquid can flow downward by its own gravity and finally flow to the drain port 13.

[0063] Exemplarily, such as Figure 3 shown, a pressure gauge can be provided on the main pipe 1 to detect the pressure condition in the pipe.

[0064] As Figure 3 shown, in some embodiments, the waste gas collection device 100 further includes a main waste liquid discharge pipe 41. The upper end of the main waste liquid discharge pipe 41 is connected to the drain port 13 of the main pipe 1, and a liquid drainage valve 42 is provided on the main waste liquid discharge pipe 41. The main waste liquid discharge pipe 41 can divert the waste liquid to the waste liquid storage place, so as to collect and process the waste liquid uniformly. The liquid drainage valve 42 can quickly discharge the waste liquid from the main waste liquid discharge pipe 41.

[0065] As Figure 3As shown, in some embodiments, the waste gas collection device 100 further includes a waste liquid bypass pipe 43. The waste liquid bypass pipe 43 is arranged in parallel with the liquid drainage valve 42. The upper and lower ends of the waste liquid bypass pipe 43 are both connected to the main waste liquid discharge pipe 41. A first switch valve 431 is provided on the waste liquid bypass pipe 43, and a second switch valve 422 is provided above the liquid drainage valve 42 on the main waste liquid discharge pipe 41, and a second switch valve 422 is provided below the main waste liquid discharge pipe 41. The waste liquid bypass valve can increase the waste liquid discharge amount in case the main waste liquid discharge pipe 41 is blocked or has insufficient transportation capacity, and quickly discharge the waste liquid from the main waste liquid discharge pipe 41.

[0066] According to an embodiment of the present invention, the building 1000, referring to Figure 4 , includes a factory building 500 and a waste gas collection device 100 according to an embodiment of the present invention. The factory building 500 has a roof. The waste gas collection device 100 is installed on the factory building 500, and the first slope section 14 is installed above or below the roof, and the second slope section 23 is installed above or below the roof.

[0067] In the related art, there are few pipelines in the factory building. The branch pipelines or main pipelines of each waste gas collection device extend separately to the outside of the factory building, which cannot make full use of the space of the factory building and is not convenient for maintenance, reducing the aesthetic degree of the outside of the building. In this application, the main pipeline 1 and branch pipelines 2 of the waste gas collection device 100 can be arranged in the factory building 500 to make full use of the space of the factory building 500, and the main pipeline 1 and branch pipelines 2 can be repaired and maintained in the factory building 500. In particular, by using the relatively vacant roof of the factory building 500, it is convenient to install, fix and support the first slope section 14 on the roof, and it is also convenient to install, fix and support the second slope section 23 on the roof. When maintenance is needed, one can climb onto the roof to operate, improving safety.

[0068] Of course, the waste gas collection device 100 can also be arranged outside the building 1000.

[0069] For the building 1000 according to the embodiments of the present utility model, the main pipeline 1 and the branch pipelines 2 of the waste gas collection device 100 can be arranged within the building 1000 and make full use of the internal space of the building 1000. Of course, the waste gas collection device 100 can also be arranged outside the building 1000 to make full use of the external space of the building 1000. At the same time, the height difference of the first slope section 14 can cause the waste liquid separated from the flowing waste gas to flow downward under the action of its own gravity, which is beneficial to avoiding the residue of the waste liquid in the main pipeline 1, keeping the inside of the main pipeline 1 clean, and improving the waste gas backflow situation caused by the residue of the waste liquid; the waste liquid flows from the high end of the second slope section 23 to the lower branch pipe outlet 21 under the action of its own gravity, and it is difficult for the waste liquid separated from the waste gas flowing through the branch pipeline 2 to flow back into the reactant through the second slope section 23; the exhaust port 12 and the drain port 13 are located at both ends of the main pipeline 1, which can separate and discharge the waste liquid and the waste gas, reduce the backflow of the waste gas and the waste liquid, and is beneficial to reducing the possibility of contaminating the reactant.

[0070] In some embodiments, the building 1000 further includes at least one reaction vessel 600. The reaction vessel 600 is installed in the workshop 500, and the branch pipelines 2 are connected to the reaction vessels 600 in a one-to-one correspondence. The types of reactants in the reaction vessels 600 can be the same or different. Preferably, one waste gas collection device 100 and multiple reaction vessels 600 can be arranged in one factory area of the building 1000, and the reactants in the reaction vessels 600 are the same. This is beneficial to avoiding cross-infection between different reactants in one factory area, that is, waste gas collection by variety classification can be carried out, and cross-contamination caused by mixed exhaust of multiple varieties can be reduced.

[0071] Exemplarily, the reactant can be placed in the reaction vessel 600. An induced draft fan group and a gas collection hood are provided on the second inlet 22. The induced draft fan group can attract the waste gas to pass through the gas collection hood and absorb the waste gas into the branch pipeline 2. Optionally, the second inlet 22 can be hermetically connected to the container opening of the reaction vessel 600, reducing the use of the induced draft fan group, reducing the spillage of waste gas, and improving the space odor situation.

[0072] It should be further noted that in actual production applications, compared with separately collecting and treating waste gas for each waste discharge pipeline, the present application can save project costs; in the present application, virtual connections are cancelled, and each pipeline and valve are hermetically connected without waste gas spillage, that is, a direct connection method is adopted between the pipelines and between the pipelines and the valves, reducing waste gas spillage, and also reducing the waste gas induced draft fans at the virtual connection points of the pipelines, reducing energy consumption.

[0073] Other components and operations of the building according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein. In the description of the present utility model, "the first feature" and "the second feature" may include one or more of such features. Among them, the up and down directions are subject to the up and down directions shown in the figure.

[0074] In the description of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0075] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An exhaust gas collection device (100), characterized in that: include: A main pipeline (1), wherein the main pipeline (1) is provided with a first inlet (11), an exhaust port (12) and a liquid discharge port (13); the main pipeline (1) comprises a first slope section (14); the height of the first slope section (14) gradually increases from one end to the other end; the lower end of the first slope section (14) is connected to the liquid discharge port (13); the upper end of the first slope section (14) is connected to the exhaust port (12); and the first inlet (11) is located on the first slope section (14); A branch pipe (2), wherein the branch pipe (2) is provided with a second inlet (22) and a branch pipe outlet (21), wherein the second inlet (22) is used to absorb exhaust gas, and the branch pipe outlet (21) is connected to the first inlet (11), and the branch pipe (2) comprises a second slope section (23) located between the second inlet (22) and the branch pipe outlet (21), wherein the height of the second slope section (23) gradually decreases in a direction toward the branch pipe outlet (21), and a high end of the second slope section (23) is higher than the branch pipe outlet (21).

2. The exhaust gas collection device (100) according to claim 1, characterized in that: Also includes: A check valve (3), wherein the check valve (3) is arranged on the second slope section (23) and is used to prevent the airflow in the second slope section (23) from flowing back to the second inlet (22).

3. The exhaust gas collection device (100) according to claim 1, characterized in that: The lower end of the second slope section (23) is higher than the branch pipe outlet (21); The branch pipe (2) further comprises a guide pipe (24) connected between the lower end of the second slope section (23) and the first inlet (11), wherein the height of the guide pipe (24) gradually decreases in the direction from the lower end of the second slope section (23) to the first inlet (11).

4. The exhaust gas collection device (100) according to claim 1, characterized in that: The first slope section (14) is a straight pipe or a curved pipe; the second slope section (23) is a straight pipe or a curved pipe.

5. The exhaust gas collection device (100) according to claim 1, characterized in that: The slope of the first slope section (14) is the ratio of the height of the first slope section (14) to the length of the projection of the first slope section (14) on the horizontal plane, and the slope of the first slope section (14) ranges from 1‰ to 5%; The slope of the second slope section (23) is the ratio of the height of the second slope section (23) to the length of the projection of the second slope section (23) on the horizontal plane, and the slope of the second slope section (23) ranges from 1‰ to 5%.

6. The exhaust gas collection device (100) according to any one of claims 1 to 5, characterized in that: The branch pipes (2) are multiple and discretely distributed, and the first slope section (14) is correspondingly provided with multiple discrete first inlets (11).

7. The exhaust gas collection device (100) according to any one of claims 1 to 5, characterized in that: It also comprises: a main waste liquid discharge pipe (41), the upper end of which is connected to the discharge port (13) of the main pipeline (1), and a drain valve (42) is provided on the main waste liquid discharge pipe (41).

8. The exhaust gas collection device (100) according to claim 7, characterized in that: Also includes: A waste liquid bypass pipe (43), the waste liquid bypass pipe (43) being arranged in parallel with the drain valve (42), and the upper end and the lower end of the waste liquid bypass pipe (43) being connected to the waste liquid main drain pipe (41); The waste liquid bypass pipe (43) is provided with a first switch valve (431), and the waste liquid main discharge pipe (41) is provided with second switch valves (422) above and below the drain valve (42), respectively.

9. A building (1000), characterized in that: include: A factory building (500), wherein the factory building (500) has a roof; According to any one of claims 1 to 8, the exhaust gas collection device (100) is installed on the factory building (500), and the first slope section (14) is installed above or below the roof, and the second slope section (23) is installed above or below the roof.

10. The building (1000) according to claim 9, characterized in that Also includes: At least one reaction container (600), the reaction container (600) is installed in the plant (500), and the branch pipeline (2) is connected to the reaction container (600) in a one-to-one correspondence.

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