Recyclable waste gas recovery device

Abstract

The utility model discloses a recyclable waste gas recovery device, which relates to the technical field of waste gas recovery devices and comprises a water tank and a waste gas filter component, the top of the water tank is fixedly connected with a gas cylinder, the top of the gas cylinder is provided with a three-way valve, the top of the three-way valve is connected with a gas ejector pipe, and the middle end of the three-way valve is connected with a gas exhaust pipe. After the filter bag is used for a period of time, the PLC can periodically operate the three-way valve to be closed, so that preliminarily filtered waste gas is temporarily stored in the gas cylinder, the pumping pressure and the pressure in the gas cylinder are gradually increased, and when the pressure value reaches a set value, the pressure in the gas cylinder is gradually increased. The pressure sensor sends a signal to the PLC, the PLC controls the three-way valve to open a specific channel, waste gas after pressure storage in the gas cylinder enters the gas ejector pipe and then enters the dust removal pipe, instantaneous aeration is performed from the spray head, dust on the outer surface of the filter bag is removed outwards from the interior of the filter bag, and automatic dust removal is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas recovery devices, in particular to a waste gas recovery device that can be recycled. Background Art

[0002] In today's industrial production, waste gas emissions are an extremely serious environmental problem. Many factories produce a large amount of waste gas during the production process. For the sake of waste utilization and environmental protection, many factories usually recycle waste gas for reuse.

[0003] According to the search, the Chinese patent document, announcement number: CN214019896U, discloses a waste gas recovery device. When in use, the waste gas enters the box through the air inlet, and the larger particles are filtered through the filter module. The waste gas enters the box, passes through the heat exchange plate, and then passes through the activated carbon adsorption plate to purify the waste gas. Finally, it passes through the spray module to cool down and remove dust again, and then it is discharged through the air outlet;

[0004] However, during actual use of the above-mentioned exhaust gas recovery device, when the filter module filters the particulate impurities in the exhaust gas to saturation, it is necessary to stop the device and disassemble the filter module to replace or clean it, which will delay the progress of exhaust gas recovery to a certain extent and cause certain inconveniences. Utility Model Content

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a recyclable waste gas recovery device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a recyclable waste gas recovery device, comprising a water tank and a waste gas filter assembly, a gas cylinder is fixedly connected to the top of the water tank, a three-way valve is installed on the top of the gas cylinder, a jet pipe is connected to the top of the three-way valve, a gas discharge pipe is connected to the middle end of the three-way valve, a check valve is installed on the outer surface of the gas cylinder, and one end of the check valve is connected to the gas delivery pipe;

[0007] The exhaust gas filter assembly includes a cylinder, the bottom of the cylinder is connected to a cone through a flange, the bottom end of the cone is connected to a drain valve through a flange, the interior of the cylinder is fixedly connected to a top plate, the interior of the top plate is threadedly connected to a bracket cover plate, the bottom of the bracket cover plate is fixedly connected to an open frame, the outer surface of the open frame is sleeved with a filter bag, the top of the cylinder is fixedly connected to a cleaning pipe, the outer surface of the cleaning pipe is fixedly connected to a plurality of nozzles, the outer surface of the cylinder is fixedly connected to a bottom connecting pipe, and the top of the cylinder is fixedly connected to a top discharge pipe.

[0008] As mentioned above, the outer surface of the water tank is fixedly connected with an exhaust gas inlet pipe and an exhaust gas outlet pipe, one end of the exhaust gas inlet pipe is connected with a spiral tube, and the spiral tube is arranged inside the water tank.

[0009] In the above, one end of the exhaust gas discharge pipe is connected to the spiral pipe, and the other end of the exhaust gas discharge pipe is connected to the bottom connecting pipe.

[0010] As mentioned above, the top end of the top discharge pipe is fixedly connected to the gas supply pipe, and the three-way valve is an electric valve.

[0011] As mentioned above, the outer surface of the water tank is connected with a bracket plate, and the outer surface of the bracket plate is installed with a PLC controller.

[0012] As mentioned above, the top of the cleaning pipe is fixedly connected to the jet pipe, and the cleaning pipe is arranged inside the filter bag, and the filter bag is connected to the outer surface of the support frame through a clamp.

[0013] As mentioned above, the outer surface of the water tank is fixedly connected with a hoop frame, the hoop frame clamps the cylinder, the top of the water tank is fixedly connected with a water inlet pipe, and the bottom of the water tank is fixedly connected with a water outlet valve.

[0014] Compared with the prior art, this recyclable waste gas recovery device has the following beneficial effects:

[0015] 1. The utility model connects the three-way valve, the pressure sensor and the check valve by setting a PLC controller. After the filter bag has been used for a period of time, the PLC controller can regularly operate the three-way valve to close, so that the exhaust gas after preliminary filtration is temporarily stored in the gas cylinder. With the pumping pressure, the pressure in the gas cylinder gradually increases. When the pressure value reaches the set value, the pressure sensor sends a signal to the PLC controller, and the PLC controller controls the three-way valve to open a specific passage, so that the exhaust gas after pressurization in the gas cylinder enters the jet pipe and then to the dust cleaning pipe, and is instantly aerated from the nozzle, and the dust on the outer surface of the filter bag is removed from the inside to the outside, so as to realize automatic dust cleaning. This function enables the filter bag to be recycled, reduces the cost and workload of manual cleaning, ensures the continuous and efficient operation of the filtering device, and improves the stability and reliability of the overall exhaust gas recovery and treatment.

[0016] 2. In the utility model, when the exhaust gas enters the spiral tube in the water tank after being connected through the exhaust gas inlet pipe, it fully contacts and exchanges heat with a large amount of tap water poured into the water tank. In this process, the exhaust gas is cooled, and the tap water is heated and heated. The heated water can be discharged through the outlet valve at the bottom of the water tank for use in other scenarios in daily life or industrial production. This heat exchange method between exhaust gas and water not only realizes the recovery and reuse of exhaust gas energy and avoids energy waste, but also meets the demand for hot water and improves the comprehensive utilization rate of resources.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a front structural schematic diagram of the utility model;

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 4 It is a cross-sectional structural schematic diagram of the exhaust gas filter assembly in the utility model;

[0022] Figure 5 It is a schematic diagram of the partial decomposition structure of the exhaust gas filter assembly in the utility model.

[0023] In the figure: 1. water tank; 2. exhaust gas filter assembly; 201. cylinder; 202. cone; 203. drain valve; 204. top plate; 205. bracket cover; 206. support frame; 207. filter bag; 208. dust cleaning pipe; 209. nozzle; 210. bottom connecting pipe; 211. top discharge pipe; 3. gas cylinder; 4. three-way valve; 5. jet pipe; 6. gas discharge pipe; 7. pressure sensor; 8. check valve; 9. exhaust gas inlet pipe; 10. exhaust gas discharge pipe; 11. spiral pipe; 12. PLC controller; 13. hoop frame; 14. gas pipeline. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 - 5 As shown, the utility model provides a technical solution: a recyclable waste gas recovery device, comprising a water tank 1 and an exhaust gas filter assembly 2, a gas cylinder 3 is fixedly connected to the top of the water tank 1, a three-way valve 4 is installed on the top of the gas cylinder 3, a jet pipe 5 is connected to the top of the three-way valve 4, and a gas exhaust pipe 6 is connected to the middle end of the three-way valve 4, a pressure sensor 7 is installed on the top of the gas cylinder 3, and a check valve 8 is installed on the outer surface of the gas cylinder 3, and one end of the check valve 8 is connected to the gas supply pipe 14.

[0026] The exhaust gas filter assembly 2 includes a cylinder 201, the bottom of the cylinder 201 is connected to a cone 202 through a flange, the bottom end of the cone 202 is connected to a drain valve 203 through a flange, the inside of the cylinder 201 is fixedly connected to a top plate 204, the inside of the top plate 204 is threadedly connected to a bracket cover 205, the bottom of the bracket cover 205 is fixedly connected to a support frame 206, the outer surface of the support frame 206 is sleeved with a filter bag 207, the top of the cylinder 201 is fixedly connected to a cleaning pipe 208, the outer surface of the cleaning pipe 208 is fixedly connected to a plurality of nozzles 209, the outer surface of the cylinder 201 is fixedly connected to a bottom connecting pipe 210, and the top of the cylinder 201 is fixedly connected to a top discharge pipe 211.

[0027] like Figure 3 As shown, the outer surface of the water tank 1 is fixedly connected with an exhaust gas inlet pipe 9 and an exhaust gas outlet pipe 10, one end of the exhaust gas inlet pipe 9 is connected with a spiral tube 11, the spiral tube 11 is arranged inside the water tank 1, one end of the exhaust gas outlet pipe 10 is connected to the spiral tube 11, and the other end of the exhaust gas outlet pipe 10 is connected to the bottom connecting pipe 210.

[0028] The exhaust gas is connected through the exhaust gas inlet pipe 9. Since the exhaust gas usually contains a relatively high temperature, the exhaust gas will immediately enter the spiral tube 11 after being connected through the exhaust gas inlet pipe 9. By pouring a large amount of tap water into the water tank 1, the exhaust gas can be cooled and the tap water can be heated for use after the spiral tube 11 contacts and exchanges heat with the water, thereby achieving the purpose of waste gas recycling. At the same time, the exhaust gas will enter the exhaust gas discharge pipe 10 after circulating in the spiral tube 11, and then the cooled exhaust gas will enter the cylinder 201, and then the exhaust gas will penetrate the filter bag 207 to filter out a large amount of particulate impurities mixed therein, so that the exhaust gas can be preliminarily purified, and then the exhaust gas with the particulate impurities removed will be discharged from the through hole opened on the top surface of the top plate 204, and then will enter the top discharge pipe 211, and then enter the gas cylinder 3 through the gas supply pipe 14 and the check valve 8.

[0029] like Figures 1 - 2 and Figures 4 - 5 As shown, the top of the top discharge pipe 211 is fixedly connected to the air supply pipe 14, the three-way valve 4 is an electric valve, the outer surface of the water tank 1 is connected to a bracket plate, the outer surface of the bracket plate is installed with a PLC controller 12, the top of the cleaning pipe 208 is fixedly connected to the jet pipe 5, and the cleaning pipe 208 is arranged inside the filter bag 207, and the filter bag 207 is connected to the outer surface of the support frame 206 through a clamp.

[0030] By setting up the PLC controller 12, it is possible to utilize the existing PLC technology to connect the three-way valve 4, the pressure sensor 7, and the check valve 8. When the filter bag 207 filters out particulate impurities in a large amount of waste gas, a large amount of dust will inevitably adhere to its outer surface and easily clog the filter holes. If not cleaned, the filtering effect will deteriorate. The PLC controller 12 can regularly operate the three-way valve 4 to close it. At this time, the preliminarily filtered waste gas will be temporarily stored inside the gas cylinder 3 without being discharged after entering the gas cylinder 3. The check valve 8 will prevent the gas inside the gas cylinder 3 from flowing back. Since the waste gas can be transported to the waste gas inlet pipe 9 through a pumping device, with the continuous pumping pressure, more and more preliminarily filtered waste gas will be temporarily stored inside the gas cylinder 3. The pressure sensor 7 can detect the pressure inside the gas cylinder 3. When the pressure value reaches the set value, the pressure sensor 7 can send a signal to the PLC controller 12. At this time, the PLC controller 12 controls the three-way valve 4 to open, and at this time, the three-way valve 4 connects the pipeline between the gas cylinder 3 and the spray pipe 5. Therefore, the pipeline between the gas cylinder 3 and the gas discharge pipe 6 is closed at this time. So, the preliminarily filtered waste gas stored under pressure inside the gas cylinder 3 will immediately enter the spray pipe 5, then enter the dust cleaning pipe 208, and then instantaneously aerate from multiple nozzles 209. In this way, the dust adhering to the outer surface of the filter bag 207 can be removed from the inside to the outside, so as to achieve the purpose of automatic dust cleaning, enabling the filter bag 207 to be recycled. It should be noted that before cleaning the filter bag 207, it is necessary to briefly stop transporting the waste gas to avoid the air pressure inside the cylinder body 201 being too high and resulting in the inability to clean the dust.

[0031] As Figures 1 - 2 shown, a hoop frame 13 is fixedly connected to the outer surface of the water tank 1, and the cylinder body 201 is clamped inside the hoop frame 13. A water inlet pipe is fixedly connected to the top of the water tank 1, and a water outlet valve is fixedly connected to the bottom of the water tank 1.

[0032] The cylinder body 201 can be fixed to the outer surface of the water tank 1 through the hoop frame 13. A large amount of tap water can be input into the water tank 1 through the water inlet pipe at the top of the water tank 1. When the water inside the water tank 1 is heated after heat exchange through the spiral pipe 11, the hot water can be discharged for use by opening the water outlet valve.

[0033] Working principle: First, waste gas is introduced through the waste gas inlet pipe 9. After the waste gas enters the spiral pipe 11 inside the water tank 1, it exchanges heat with water, cooling the waste gas and heating the tap water. The cooled waste gas enters the waste gas discharge pipe 10 and then enters the inside of the cylinder body 201. Subsequently, it penetrates through the filter bag 207 to filter out particulate impurities, enters the top discharge pipe 211 through the through hole on the top surface of the top plate 204, and then enters the gas cylinder 3 through the gas transmission pipe 14 and the check valve 8. If the filter bag 207 is not cleaned, the preliminarily filtered waste gas in the gas cylinder 3 will pass through the three-way valve 4 and be discharged from the gas discharge pipe 6. The gas discharge pipe 6 can be connected to the waste gas treatment equipment for further waste gas treatment and then discharged. When the filter bag 207 filters a large amount of particulate impurities, the PLC controller 12 regularly operates the three-way valve 4 to close, and the waste gas is temporarily stored in the gas cylinder 3. The pressure sensor 7 detects the pressure. When the pressure value reaches the set value, it sends a signal to the PLC controller 12. The PLC controller 12 controls the three-way valve 4 to open, connecting the pipeline between the gas cylinder 3 and the air injection pipe 5, so that the preliminarily filtered waste gas stored under pressure in the gas cylinder 3 enters the air injection pipe 5 and then enters the dust cleaning pipe 208, and instantaneously aerates from the nozzle 209 to remove the dust on the outer surface of the filter bag 207, achieving the purpose of automatic dust cleaning. And the waste gas transportation needs to be stopped briefly before dust cleaning; the removed particulate dust will fall into the inside of the conical cylinder 202, and the impurities can be discharged by opening the drain valve 203.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A recyclable waste gas recovery device, comprising a water tank (1) and a waste gas filtration component (2), characterized in that: A gas cylinder (3) is fixedly connected to the top of the water tank (1). A three-way valve (4) is installed at the top of the gas cylinder (3). The top end of the three-way valve (4) is connected to an air injection pipe (5), and the middle end of the three-way valve (4) is connected to a gas discharge pipe (6). A pressure sensor (7) is installed at the top of the gas cylinder (3), and a check valve (8) is installed on the outer surface of the gas cylinder (3). One end of the check valve (8) is connected to a gas transmission pipe (14). The waste gas filtering assembly (2) includes a cylinder body (201). The bottom of the cylinder body (201) is connected to a cone (202) through a flange. The bottom end of the cone (202) is connected to a sewage discharge valve (203) through a flange. A top plate (204) is fixedly connected inside the cylinder body (201). A support cover plate (205) is threadedly connected inside the top plate (204). A spreading frame (206) is fixedly connected to the bottom of the support cover plate (205). A filter bag (207) is sleeved on the outer surface of the spreading frame (206). A dust cleaning pipe (208) is fixedly connected to the top of the cylinder body (201). A plurality of spray nozzles (209) are fixedly connected to the outer surface of the dust cleaning pipe (208). A bottom connecting pipe (210) is fixedly connected to the outer surface of the cylinder body (201), and a top discharge pipe (211) is fixedly connected to the top of the cylinder body (201).

2. The recyclable waste gas recovery device according to claim 1, wherein: An exhaust gas inlet pipe (9) and an exhaust gas outlet pipe (10) are fixedly connected to the outer surface of the water tank (1). One end of the exhaust gas inlet pipe (9) is connected to a spiral pipe (11), and the spiral pipe (11) is arranged inside the water tank (1).

3. The recyclable waste gas recovery device according to claim 2, characterized in that: One end of the exhaust gas outlet pipe (10) is connected to the spiral pipe (11), and the other end of the exhaust gas outlet pipe (10) is connected to the bottom connecting pipe (210).

4. The recyclable waste gas recovery device according to claim 1, characterized in that: The top end of the top discharge pipe (211) is fixedly connected to the gas transmission pipe (14), and the three-way valve (4) is an electric valve.

5. An exhaust gas recycling device that can be recycled according to claim 1, characterized in that: A support plate is connected to the outer surface of the water tank (1), and a PLC controller (12) is installed on the outer surface of the support plate.

6. The recyclable waste gas recovery device according to claim 1, characterized in that: The top of the dust cleaning pipe (208) is fixedly connected to the air injection pipe (5), and the dust cleaning pipe (208) is arranged inside the filter bag (207). The filter bag (207) is connected to the outer surface of the spreading frame (206) through a hoop.

7. The waste gas recovery device capable of being recycled according to claim 1, characterized in that: A hoop frame (13) is fixedly connected to the outer surface of the water tank (1), and the cylinder body (201) is held inside the hoop frame (13). A water inlet pipe is fixedly connected to the top of the water tank (1), and a water outlet valve is fixedly connected to the bottom of the water tank (1).

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