A pressure equalizer mixing device for VOCs treatment

Abstract

The utility model relates to a kind of pressure equalizer mixing device for VOCs processing, including VOCs waste gas conveying pipeline, oxygen conveying pipeline, pressure equalizer and mixer, pressure equalizer includes liftable upper cylinder and lower cylinder, and elastic rubber diaphragm is clamped between the bottom of upper cylinder and the top of lower cylinder, VOCs waste gas conveying pipeline tail end is communicated with the side portion of lower cylinder by first air inlet hose, and oxygen conveying pipeline tail end is communicated with the side portion of upper cylinder by second air inlet hose, and mixer includes tank, and tank bottom is communicated with VOCs waste gas input pipe, and one side lower portion is communicated with oxygen input pipe, VOCs waste gas input pipe is communicated with the bottom of lower cylinder by first air outlet hose, and oxygen input pipe is communicated with the top of upper cylinder by second air outlet hose, stirring shaft is rotatably arranged in tank, and its lower portion is equipped with several disc turbine agitator, and tank one side upper portion is communicated with mixed gas conveying pipeline.The utility model can mix after pressure balance to VOCs waste gas and oxygen, and it is safer and more practical.

Description

Technical Field

[0001] This utility model belongs to the field of VOCs treatment technology, specifically relating to a VOCs treatment equalization and mixing device. Background Technology

[0002] Currently, in the catalytic combustion treatment process for VOCs waste gas, mixed gas intake is usually required. This involves mixing VOCs waste gas with oxygen before feeding it into a reactor containing a catalyst for catalytic combustion. This ensures sufficient oxidation on the catalyst surface, improves reaction efficiency, and reduces the formation of harmful byproducts. However, in actual mixed gas intake, the different gas supply systems and pipeline pressures of VOCs waste gas and oxygen can easily affect the uniformity of the mixture and detrimental to its stability, thus reducing equipment safety and requiring improvement. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a pressure equalization and mixing device for VOCs treatment, which can first equalize the pressure of VOCs waste gas and oxygen before mixing, so as to solve the above problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a VOCs treatment pressure equalization and mixing device, comprising a VOCs waste gas conveying pipeline, an oxygen conveying pipeline, a pressure equalization and mixing device, wherein the pressure equalization and mixing device comprises an upper cylinder and a lower cylinder that are vertically distributed and can be raised and lowered, the bottom of the upper cylinder and the top of the lower cylinder are both open, and an elastic rubber diaphragm is sandwiched between the bottom of the upper cylinder and the top of the lower cylinder, the tail end of the VOCs waste gas conveying pipeline is connected to the side of the lower cylinder through a first inlet hose, and the tail end of the oxygen conveying pipeline is connected to the side of the lower cylinder through a second inlet hose. The gas hose is connected to the side of the upper cylinder. The mixer includes a tank. The bottom of the tank is connected to a VOCs exhaust gas inlet pipe, and the lower side is connected to an oxygen inlet pipe. The VOCs exhaust gas inlet pipe is connected to the bottom of the lower cylinder through a first exhaust hose, and the oxygen inlet pipe is connected to the top of the upper cylinder through a second exhaust hose. A stirring shaft is vertically and rotatably installed inside the tank. The top of the stirring shaft extends out of the tank and is connected to a first motor. Several disc turbine stirrers are fixedly installed on the lower part at intervals. A mixed gas delivery pipeline is connected to the upper side of the tank.

[0005] Preferably, the pressure equalizing device has a top plate above and a bottom plate below. A guide rod is fixedly connected between the bottom left end of the top plate and the top left end of the bottom plate, and a bidirectional lead screw is rotatably connected between the bottom right end of the top plate and the top right end of the bottom plate. The top end of the bidirectional lead screw passes through the top plate and is connected to a second motor. Lifting plates are provided on both the left and right sides of the upper and lower cylinders. The lifting plates on the left side of the upper and lower cylinders are slidably sleeved with the guide rod, and the lifting plates on the right side of the upper and lower cylinders are threadedly sleeved on the two threaded sections of the bidirectional lead screw.

[0006] Preferably, the bottom of the upper cylinder is fixed with an upper flange, the top of the lower cylinder is fixed with a lower flange, and a plurality of positioning rods are fixed on the top of the lower flange at circumferential intervals. The elastic rubber diaphragm is provided with through holes at positions corresponding to the positioning rods, and the bottom of the upper flange is provided with blind holes at positions corresponding to the positioning rods. The positioning rods pass through the corresponding through holes and are inserted into the corresponding blind holes.

[0007] Preferably, both the VOCs waste gas delivery pipeline and the oxygen delivery pipeline are equipped with flow regulating valves.

[0008] Preferably, the mixed gas delivery pipeline is equipped with a pipeline valve.

[0009] The beneficial effects of this invention are as follows: During the mixing and inlet process of the catalytic combustion treatment of VOCs waste gas, the VOCs waste gas can be transported to the lower cylinder of the pressure equalization balancer via the VOCs waste gas delivery pipeline and the first inlet hose. Oxygen is then transported to the upper cylinder of the pressure equalization balancer via the oxygen delivery pipeline and the second inlet hose. Due to the pressure difference between the VOCs waste gas and oxygen, the elastic rubber diaphragm deforms, causing changes in the size of the chambers on both sides of the diaphragm, thereby achieving pressure balance regulation of the two gases. The pressure-regulated VOCs waste gas can enter the tank from the bottom through the first outlet hose and the VOCs waste gas inlet pipe, while the pressure-regulated oxygen can enter the tank from the lower side through the second outlet hose and the oxygen inlet pipe. Then, driven by the first motor, the two gases are efficiently and effectively mixed by multiple disc turbine agitators on the rotating stirring shaft. Finally, the mixed gas can be transported to the subsequent reactor for catalytic combustion and other treatments via the mixed gas delivery pipeline. Therefore, the pressure of VOCs waste gas and oxygen can be balanced first using a pressure equalizer before the two gases are effectively mixed by a mixer. This ensures the uniformity and stability of the mixture, improves the production safety of the equipment, and makes it more practical. Furthermore, after long-term use, the elastic rubber diaphragm can be flexibly disassembled and replaced by lifting the upper and lower cylinders while the machine is stopped, ensuring the pressure equalization effect and making the overall use more flexible and convenient. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the main structure of the pressure equalization balancer of this utility model;

[0012] Figure 3 This is a schematic diagram of the main structure of the pressure equalization balancer of this utility model when the upper and lower cylinders are separated;

[0013] Figure 4 This is a schematic diagram of the main structure of the upper cylinder of this utility model;

[0014] Figure 5 This is a schematic diagram of the main structure of the elastic rubber diaphragm of this utility model;

[0015] Figure 6 This is a schematic diagram of the main structure of the lower cylinder of this utility model;

[0016] Figure 7 This is a top view of the lower cylinder of this utility model.

[0017] Figure 8 This is a schematic diagram of the main structure of the mixer of this utility model.

[0018] The diagram is labeled as follows: 1 is the VOCs waste gas delivery pipeline, 2 is the oxygen delivery pipeline, 3 is the pressure equalizer, 4 is the mixer, 5 is the upper cylinder, 6 is the lower cylinder, 7 is the elastic rubber diaphragm, 8 is the first inlet hose, 9 is the second inlet hose, 10 is the tank, 11 is the VOCs waste gas input pipe, 12 is the oxygen input pipe, 13 is the first outlet hose, 14 is the second outlet hose, 15 is the stirring shaft, 16 is the first motor, 17 is the disc turbine agitator, 18 is the mixed gas delivery pipeline, 19 is the top plate, 20 is the bottom plate, 21 is the guide rod, 22 is the bidirectional lead screw, 23 is the second motor, 24 is the lifting plate, 25 is the upper flange, 26 is the lower flange, 27 is the positioning rod, 28 is the displacement through hole, 29 is the blind hole, 30 is the flow regulating valve, and 31 is the pipeline valve. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] like Figures 1 to 8As shown, a VOCs treatment pressure equalization and mixing device includes a VOCs exhaust gas delivery pipeline 1, an oxygen delivery pipeline 2, a pressure equalization and balancing device 3, and a mixer 4. The pressure equalization and balancing device 3 includes an upper cylinder 5 and a lower cylinder 6, which are vertically distributed and can be raised and lowered. The bottom of the upper cylinder 5 and the top of the lower cylinder 6 are both open, and an elastic rubber diaphragm 7 is sandwiched between the bottom of the upper cylinder 5 and the top of the lower cylinder 6. The tail end of the VOCs exhaust gas delivery pipeline 1 is connected to the side of the lower cylinder 6 via a first inlet hose 8, and the tail end of the oxygen delivery pipeline 2 is connected to the side of the upper cylinder 5 via a second inlet hose 9. The mixer 4 includes a tank 10, the bottom of which is connected to a VOCs exhaust gas input pipe 11, and the lower side of which is connected to an oxygen input pipe 12. The VOCs exhaust gas input pipe 11 is connected to the bottom of the lower cylinder 6 via a first outlet hose 13, and the oxygen input pipe 12 is connected to the top of the upper cylinder 5 via a second outlet hose 14. A stirring shaft 15 is vertically and rotatably installed inside the tank body 10. The top end of the stirring shaft 15 extends out of the tank body and is connected to a first motor 16. Several disc turbine stirrers 17 are fixedly installed at the bottom and are distributed vertically and vertically. A mixed gas delivery pipeline 18 is connected to the upper side of the tank body 10.

[0021] During the mixed intake of VOCs waste gas in the catalytic combustion treatment process, VOCs waste gas can be transported to the lower cylinder 6 of the pressure equalizer 3 by the VOCs waste gas delivery pipeline 1 and the first intake hose 8, and oxygen can be transported to the upper cylinder 5 of the pressure equalizer 3 by the oxygen delivery pipeline 2 and the second intake hose 9. Due to the pressure difference between VOCs waste gas and oxygen, the elastic rubber diaphragm 7 deforms, which in turn changes the size of the chambers on the upper and lower sides of the elastic rubber diaphragm 7, thereby achieving pressure balance regulation of the two gases. After pressure regulation, the VOCs exhaust gas enters the tank 10 from the bottom through the first outlet hose 13 and the VOCs exhaust gas inlet pipe 11. The oxygen, after pressure regulation, enters the tank 10 from the lower side through the second outlet hose 14 and the oxygen inlet pipe 12. Driven by the first motor 16, the two gases are efficiently and effectively mixed by multiple disc turbine agitators 17 on the rotating stirring shaft 15. Finally, the mixed gas is transported to the subsequent reactor for catalytic combustion and other treatments via the mixed gas delivery pipeline 18. This allows for pressure balancing of the VOCs exhaust gas and oxygen using the pressure equalizer 3 before effective mixing by the mixer 4, ensuring greater uniformity and stability of the mixed gas, improving equipment safety, and enhancing practicality. Furthermore, after long-term use, the elastic rubber diaphragm 7 can be flexibly disassembled and replaced using the lifting mechanism of the upper cylinder 5 and lower cylinder 6 while the machine is stopped, ensuring pressure equalization and making overall use more flexible and convenient. Both the elastic rubber diaphragm 7 and the disc turbine agitator 17 can be achieved using existing technologies.

[0022] In this embodiment, the pressure equalizer 3 has a top plate 19 above it and a bottom plate 20 below it. A guide rod 21 is fixedly connected between the bottom left end of the top plate 19 and the top left end of the bottom plate 20. A bidirectional lead screw 22 is rotatably connected between the bottom right end of the top plate 19 and the top right end of the bottom plate 20. The top end of the bidirectional lead screw 22 passes through the top plate 19 and is connected to a second motor 23. Lifting plates 24 are provided on both the left and right sides of the upper cylinder 5 and the lower cylinder 6. The lifting plates 24 on the left side of the upper cylinder 5 and the lower cylinder 6 are slidably sleeved with the guide rod 21. The lifting plates 24 on the right side of the upper cylinder 5 and the lower cylinder 6 are threadedly sleeved on the two threaded sections of the bidirectional lead screw 22. The bottom of the upper cylinder 5 is fixed with an upper flange 25, and the top of the lower cylinder 6 is fixed with a lower flange 26. Several positioning rods 27 are evenly distributed in a circular pattern on the top of the lower flange 26. Through holes 28 are opened at the positions of the elastic rubber diaphragm 7 and the positioning rods 27. Blind holes 29 are opened at the bottom of the upper flange 25 and the positions of the positioning rods 27. The positioning rods 27 pass through the corresponding through holes 28 and are inserted into the corresponding blind holes 29.

[0023] When it is necessary to replace the elastic rubber diaphragm 7, the second motor 23 can first drive the bidirectional lead screw 22 to reverse, and the corresponding lifting plate 24 can be threaded into the corresponding threaded section of the bidirectional lead screw 22. Under the guidance of the guide rod 21, the upper cylinder 5 and the lower cylinder 6 can be moved in opposite directions, thereby separating the upper cylinder 5 and the lower cylinder 6. The original elastic rubber diaphragm 7 can then be easily removed from the lower flange 26 of the lower cylinder 6, completing the disassembly of the original elastic rubber diaphragm 7. When installing the new elastic rubber diaphragm 7, it can be placed in position on the lower flange 26, and the through hole 28 can be aligned with the positioning rod 27 and inserted into position to complete the initial positioning and installation of the elastic rubber diaphragm 7. Next, the second motor 23 drives the bidirectional lead screw 22 to rotate forward, causing the upper cylinder 5 and lower cylinder 6 to move relative to each other until the positioning rod 26 is inserted into the corresponding blind hole 29. The elastic rubber diaphragm 7 can then be clamped and fixed securely by the upper flange 25 and lower flange 26, without affecting subsequent use. This allows for convenient disassembly and replacement of the elastic rubber diaphragm 7, making it more practical.

[0024] In this embodiment, both the VOCs exhaust gas pipeline 1 and the oxygen pipeline 2 are equipped with flow regulating valves 30, which facilitates the adjustment of the flow rate of the corresponding gas according to the actual situation during gas transmission.

[0025] In this embodiment, a pipeline valve 31 is provided on the gas mixture delivery pipeline 18 to facilitate the control of the opening and closing of the gas mixture delivery pipeline 18. A conventional ball valve or similar type of valve can be used.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A pressure equalizer mixing device for VOCs treatment, characterized by, The system includes a VOCs exhaust gas delivery pipeline, an oxygen delivery pipeline, a pressure equalizer, and a mixer. The pressure equalizer comprises an upper cylinder and a lower cylinder, which are vertically distributed and can be raised and lowered. The bottom of the upper cylinder and the top of the lower cylinder are both open, and an elastic rubber diaphragm is sandwiched between the bottom of the upper cylinder and the top of the lower cylinder. The tail end of the VOCs exhaust gas delivery pipeline is connected to the side of the lower cylinder through a first inlet hose, and the tail end of the oxygen delivery pipeline is connected to the side of the upper cylinder through a second inlet hose. The mixer includes a tank. The bottom of the tank is connected to a VOCs exhaust gas input pipe, and the lower side of the tank is connected to an oxygen input pipe. The VOCs exhaust gas input pipe is connected to the bottom of the lower cylinder through a first outlet hose, and the oxygen input pipe is connected to the top of the upper cylinder through a second outlet hose. A vertically rotatable stirring shaft is installed inside the tank. The top end of the stirring shaft extends out of the tank and is connected to a first motor. Several disc turbine stirrers are fixedly installed at vertical intervals on the lower part. A mixed gas delivery pipeline is connected to the upper side of the tank.

2. The pressure equalization device mixing apparatus for VOCs treatment according to claim 1, wherein The pressure equalizer has a top plate above and a bottom plate below. A guide rod is fixedly connected between the bottom left end of the top plate and the top left end of the bottom plate, and a bidirectional lead screw is rotatably connected between the bottom right end of the top plate and the top right end of the bottom plate. The top end of the bidirectional lead screw passes through the top plate and is connected to a second motor. Lifting plates are provided on both the left and right sides of the upper and lower cylinders. The lifting plates on the left side of the upper and lower cylinders are slidably sleeved with the guide rod, and the lifting plates on the right side of the upper and lower cylinders are threadedly sleeved on the two threaded sections of the bidirectional lead screw.

3. The pressure equalization device mixing apparatus for VOCs treatment according to claim 2, wherein The bottom of the upper cylinder is fixed with an upper flange, and the top of the lower cylinder is fixed with a lower flange. Several positioning rods are fixed on the top of the lower flange at circumferential intervals. Through holes are opened at the positions of the elastic rubber diaphragm and the positioning rods. Blind holes are opened at the bottom of the upper flange and the positions of the positioning rods. The positioning rods pass through the corresponding through holes and are inserted into the corresponding blind holes.

4. The pressure equalization device mixing apparatus for VOCs treatment according to claim 1, wherein Both the VOCs waste gas delivery pipeline and the oxygen delivery pipeline are equipped with flow regulating valves.

5. The pressure equalization device mixing apparatus for VOCs treatment according to claim 1, wherein The mixed gas delivery pipeline is equipped with a pipeline valve.

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