Environment-friendly engineering construction waste gas purification device of rubber product oven

Abstract

The invention provides an environment-friendly engineering construction waste gas purification device for a rubber product oven, which comprises a cabin body, a liquid inlet pipe is arranged above the side wall of the cabin body, extends into the cabin body and is fixedly connected with a spraying ring arranged downwards, a gas guide ring is welded at the bottom of the cabin body, a gas inlet extending out of the cabin body is connected onto the gas guide ring, and a liquid disc is fixed in the center of the gas guide ring. An impeller is fixedly and rotatably arranged in the center of the liquid disc, nozzles with gap layer structures are annularly and obliquely distributed along the edge of the liquid disc below the impeller and are communicated with a gas path of the gas guide ring, so that waste gas impacts the impeller, the gap layer structures are matched, absorption liquid is sucked by utilizing negative pressure generated by airflow, and the sucked absorption liquid is atomized; the contact rate of the absorption liquid and the waste gas is increased through secondary atomization at the bottom, particles in the waste gas are intercepted at the bottom of the cabin body as much as possible, dissipation is reduced, the flow speed of the waste gas is reduced, the retention time of the waste gas in the cabin body is prolonged, the contact time of the waste gas and the absorption liquid is prolonged, and good development prospects are achieved.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment, specifically to an environmental engineering construction waste gas purification device for a rubber product oven. Background Technology

[0002] Rubber is a highly elastic polymer material, belonging to a completely amorphous polymer. It is divided into natural rubber and synthetic rubber. The processing of rubber includes steps such as rubber mixing, sheeting, molding and high-temperature fluidization. Rubber fluidization usually uses a semi-enclosed oven for vulcanization reaction. During vulcanization, toxic gases such as sulfur dioxide are generated. In order to avoid direct emission of toxic gases and pollution of the environment, it is necessary to use waste gas purification equipment to purify the waste gas after vulcanization.

[0003] When exhaust gas purification equipment is used to purify gases such as sulfur dioxide generated during rubber vulcanization, it usually first uses filtration to purify the particles in the exhaust gas. With long-term use, the filter plates need to be cleaned, which requires the equipment to be shut down for maintenance. In addition, the air inlet of the equipment is also easily blocked by particulate matter, affecting the air intake efficiency.

[0004] Therefore, a new type of environmentally friendly construction waste gas purification device for rubber product ovens is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly construction waste gas purification device for rubber product ovens.

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

[0007] An environmentally friendly construction waste gas purification device for a rubber product oven includes a chamber. An inlet pipe extends into the chamber from the upper side wall and is fixedly connected to a downward-facing spray ring. An air guide ring is welded to the bottom of the chamber, and an air inlet protruding from the chamber is connected to the air guide ring. A liquid pan is fixed in the center of the air guide ring, and an impeller is rotatably mounted in the center of the liquid pan. Below the impeller, nozzles with a gap layer structure are distributed obliquely in a ring along the edge of the liquid pan and are connected to the air passage of the air guide ring. A spiral auger is rotatably mounted in the center of the liquid pan, and the spiral auger is driven by a transmission connection to the impeller. A guide cylinder is fitted around the outside of the spiral auger, connecting to the outside of the chamber. An exhaust port is located at the top of the chamber.

[0008] As a further aspect of the present invention: a drain pipe is embedded in the side wall of the liquid tray, the height of the drain pipe is set lower than the height of the top of the nozzle, and it is connected to the bottom side of the liquid tray; a liquid outlet is provided at the bottom of the chamber.

[0009] As a further embodiment of the present invention: the drain pipe is a U-shaped siphon pipe with the opening facing downwards.

[0010] As a further aspect of the present invention: the guide tube is a semi-closed structure with openings at the bottom and outside the cabin, and the auger extends into the guide tube from the bottom opening.

[0011] As a further aspect of the present invention: the impeller is fixedly connected to the auger via a scraper that is in contact with the surface of the liquid pan, and the scraper is composed of a rigid connecting rod and a rubber scraper fixed on the connecting rod.

[0012] As a further aspect of the present invention: the scraper has a J-shaped cross-section, and the end of the connecting rod that is fixedly connected to the impeller is inclined toward the direction of impeller rotation.

[0013] As a further embodiment of the present invention: the nozzle includes an air pipe and a guide tube. The tail end of the air pipe is connected to the air passage of the air guide ring, and the front end is obliquely inserted into the liquid pan and perpendicular to the blade structure on the impeller. The guide tube is sleeved on the outer side of the front end of the air pipe, and a gap layer is left between the guide tube and the air pipe.

[0014] As a further aspect of the present invention: the guide tube and the air pipe are hinged, and the center of gravity of the guide tube is offset from the hinge point.

[0015] As a further aspect of the present invention, the front end of the trachea is provided with radially protruding hammer marks.

[0016] As a further aspect of the present invention: the diameter of the through hole at the front section of the guide tube is set smaller than the diameter of the front end of the air pipe, and the inner side of the through hole is rounded.

[0017] Beneficial effects

[0018] 1. The bottom of the chamber of this invention is welded with an air guide ring, and an air inlet protruding from the chamber is connected to the air guide ring. A liquid pan is fixed in the center of the air guide ring, and an impeller is fixedly and rotatably mounted in the center of the liquid pan. Below the impeller, nozzles with a gap layer structure are distributed obliquely in a ring along the edge of the liquid pan and are connected to the air passage of the air guide ring to guide the exhaust gas, so that the exhaust gas impacts the impeller and drives the impeller. With the help of the gap layer structure, the negative pressure generated by the airflow is used to draw the absorbent liquid in the liquid pan. The absorbent liquid impacts the impeller together with the airflow and atomizes it. The secondary atomization at the bottom increases the contact rate between the absorbent liquid and the exhaust gas, while intercepting the particles in the exhaust gas at the bottom of the chamber as much as possible, reducing the dispersion, reducing the exhaust gas flow rate, prolonging the residence time of the exhaust gas in the chamber, and increasing the contact time with the absorbent liquid.

[0019] 2. The nozzle of this invention includes an air pipe and a guide tube. The tail end of the air pipe is connected to the air passage of the air guide ring, and the front end obliquely penetrates into the liquid tray, perpendicular to the blade structure on the impeller. The guide tube is sleeved on the outer side of the front end of the air pipe, and a gap layer is left between the guide tube and the air pipe. The negative pressure generated by the airflow in the air pipe, combined with the gap, produces an absorption effect on the absorbent liquid in the liquid tray. The guide tube and the air pipe are hinged. The center of gravity of the guide tube is offset from the hinge point, so that the connection angle between the guide tube and the air pipe will change under the unstable conditions of airflow and liquid flow. This results in a relative displacement of the guide tube above the air pipe structure, preventing particulate impurities from accumulating and clogging the gap layer.

[0020] 3. The scraper of the present invention consists of a rigid connecting rod and a rubber scraper fixed on the connecting rod. The scraper has a J-shaped cross-section, so that the gap where the scraper contacts the liquid pan structure is an arc surface rather than an angled structure. The end of the connecting rod that is fixedly connected to the impeller is inclined towards the impeller rotation direction, which improves the cleaning ability of the absorbent liquid in the liquid pan on the scraper when the scraper moves, and avoids the sticky oil mist generated by the evaporation of rubber softener from sticking to the angle, making it easier to guide it to the spiral auger for discharge. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0023] Figure 3 This is an exploded view of the internal structure of the present invention.

[0024] Figure 4 This is a cross-sectional schematic diagram of the liquid pan structure of the present invention.

[0025] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the structure at point A.

[0026] Figure 6 This is a cross-sectional schematic diagram of the nozzle structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the impeller drive of the present invention.

[0028] Figure 8 This is a schematic diagram of the scraper structure of the present invention.

[0029] Figure 1-8In the middle: 1. Cabin; 2. Liquid inlet pipe; 3. Spray ring; 4. Air inlet; 5. Air guide ring; 6. Liquid tray; 7. Nozzle; 71. Air pipe; 72. Hammer pattern; 73. Flow guide tube; 8. Drain pipe; 9. Impeller; 10. Scraper; 101. Connecting rod; 102. Scraper blade; 11. Spiral auger; 12. Flow guide tube; 13. Liquid outlet; 14. Exhaust port. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-8 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is an exploded view of the internal structure of the present invention; Figure 4 This is a cross-sectional schematic diagram of the liquid tray structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A; Figure 6 This is a cross-sectional schematic diagram of the nozzle structure of the present invention; Figure 7 This is a schematic diagram of the impeller drive of the present invention; Figure 8 This is a schematic diagram of the scraper structure of the present invention.

[0032] This embodiment provides an environmentally friendly construction waste gas purification device for a rubber product oven, such as... Figure 1 , Figure 2 , Figure 3As shown, the device includes a chamber 1. A liquid inlet pipe 2 extends into the chamber 1 from the upper side wall and is fixedly connected to a downward-facing spray ring 3 to spray atomized alkaline absorbent liquid downwards. A guide ring 5 is welded to the bottom of the chamber 1, and an air inlet 4 protruding from the chamber 1 is connected to the guide ring 5, which is connected to a coarse filtration device for the exhaust gas, guiding the coarsely filtered exhaust gas into the chamber 1. A liquid tray 6 is fixed in the center of the guide ring 5 to collect the sprayed absorbent liquid, extending the residence time of the absorbent liquid at the bottom of the chamber 1 and increasing its utilization rate. Simultaneously, the accumulation of the absorbent liquid enhances the cooling effect on the exhaust gas. An impeller 9 is fixedly and rotatably mounted in the center of the liquid tray 6. Below the impeller 9, nozzles 7 with a gap layer structure are distributed obliquely in a ring along the edge of the liquid tray 6 and are connected to the air passage of the guide ring 5 for the introduction of exhaust gas. The exhaust gas is guided to impact the impeller 9, which drives the impeller 9. In conjunction with the gap layer structure, the negative pressure generated by the airflow draws up the absorbent liquid in the liquid pan 6. The absorbent liquid impacts the impeller 9 along with the airflow, atomizing it. The secondary atomization at the bottom increases the contact rate between the absorbent liquid and the exhaust gas, while intercepting as many particles in the exhaust gas as possible at the bottom of the chamber 1, reducing dispersion and lowering the exhaust gas flow rate. This prolongs the residence time of the exhaust gas in the chamber 1 and increases the contact time with the absorbent liquid. A spiral auger 11 is rotated in the center of the liquid pan 6. The spiral auger 11 is driven by the impeller 9. A guide tube 12 is sleeved on the outside of the spiral auger 11 and connects to the outside of the chamber 1 to discharge the particles accumulated at the bottom, thus achieving solid-liquid separation. There is an exhaust port 14 at the top of the chamber 1.

[0033] The guide tube 12 is a semi-enclosed structure with an opening at the bottom and outside the chamber 1. The spiral auger 11 extends into the bottom opening of the guide tube 12, thereby preventing the absorbent liquid droplets sprayed by the top spray ring 3 from falling into the guide tube 12 and being discharged. It also prevents the droplets from flowing down under the influence of gravity, causing the spiral auger 11 to transport the particles to slip off the guide tube 12.

[0034] like Figure 4 As shown, a drain pipe 8 is embedded in the side wall of the liquid tray 6. The height of the drain pipe 8 is lower than the top height of the nozzle 7. The drain pipe 8 controls the liquid level of the absorbent liquid in the liquid tray 6 to prevent the liquid level from overflowing the nozzle 7 and affecting the atomization effect of the nozzle 7. The drain pipe 8 is connected to the bottom side of the liquid tray 6. The bottom of the chamber 1 is provided with a liquid outlet 13. The drain pipe 8 is a U-shaped siphon pipe with the opening facing downward. The downward opening of the siphon pipe enhances the discharge effect of the absorbent liquid and avoids particulate impurities from clogging the drain pipe 8.

[0035] like Figure 6As shown, the nozzle 7 includes an air pipe 71 and a guide tube 73. The tail end of the air pipe 71 is connected to the air passage of the air guide ring 5, and the front end obliquely penetrates into the liquid pan 6, perpendicular to the blade structure on the impeller 9. The guide tube 73 is sleeved on the outer side of the front end of the air pipe 71, and a gap layer is left between the guide tube 73 and the air pipe 71. The negative pressure generated by the airflow in the air pipe 71, combined with the gap, produces an absorption effect on the absorbent liquid in the liquid pan 6. The guide tube 73 and the air pipe 71 are hinged. The center of gravity of the guide tube 73 is offset from the hinge point, so that the connection angle between the guide tube 73 and the air pipe 71 will be affected by the airflow and the air pipe 71. When the liquid flow is unstable, the angle changes, resulting in a relative displacement of the guide tube 73 above the air pipe 71. This prevents particulate impurities from accumulating and clogging the gap layer. The diameter of the through hole at the front of the guide tube 73 is smaller than that at the front end of the air pipe 71, and the inner side of the through hole is rounded. This enhances the effect of the airflow and water flow on the guide tube 73 and improves the driving effect on the angle of the guide tube 73. In addition, the front end of the air pipe 71 is provided with radially protruding hammer marks 72 to enhance the effect of the collision between the guide tube 73 and the air pipe 71 on removing particulate impurities adhering to the gap layer.

[0036] like Figure 7 , Figure 8 As shown, the impeller 9 is fixedly connected to the auger 11 via a scraper 10 that is attached to the surface of the liquid pan 6. The scraper 10 consists of a rigid connecting rod 101 and a rubber scraper 102 fixed on the connecting rod 101. The cross-section of the scraper 102 is J-shaped, so that the gap where the scraper 102 contacts the liquid pan 6 is an arc surface rather than an angled structure. The end of the connecting rod 101 that is fixedly connected to the impeller 9 is inclined towards the rotation direction of the impeller 9, which improves the cleaning ability of the absorbent liquid in the liquid pan 6 on the scraper 102 when the scraper 102 moves, and avoids the sticky oil mist generated by the evaporation of the rubber softener from sticking to the angle, so as to facilitate its guidance to the auger 11 for discharge.

[0037] When implementing the technical solution described in this embodiment, the alkaline absorbent is introduced through the inlet pipe 2, atomized and sprayed downwards by the spray ring 3, and accumulates in the bottom liquid pan 6. The coarsely filtered exhaust gas is introduced into the chamber 1 through the air guide ring 5 and the nozzle 7, impacting the impeller 9 and driving the impeller 9. With the gap layer structure of the nozzle 7, the negative pressure generated by the airflow is used to draw the absorbent in the liquid pan 6, and together with the airflow, it impacts the impeller 9, atomizing the drawn-up absorbent. The secondary atomization at the bottom increases the contact rate between the absorbent and the exhaust gas, while intercepting the particles in the exhaust gas at the bottom of the chamber 1 as much as possible, reducing dispersion, reducing the exhaust gas flow rate, prolonging the residence time of the exhaust gas in the chamber 1, and increasing the contact time with the absorbent. The spiral auger 11 and the scraper 10 also rotate under the drive of the spiral auger 11, collecting and discharging the solid particles deposited in the liquid pan 6, playing a role in solid-liquid separation. The exhaust gas is discharged from the exhaust port 14 at the top of the chamber 1 after reaction, filtration and cooling.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly construction waste gas purification device for a rubber product oven, characterized in that, include: The chamber (1) has an inlet pipe (2) extending into the chamber (1) from the upper side wall and is fixedly connected to a downward-facing spray ring (3). The top of the chamber (1) has an exhaust port (14). Air guide ring (5), air guide ring (5) is welded to the bottom of the cabin (1), and air inlet (4) protruding outside the cabin (1) is connected to the air guide ring (5). Liquid tray (6), air guide ring (5) has a liquid tray (6) fixed in the center, and an impeller (9) is fixedly and rotatably installed in the center of the liquid tray (6). Below the impeller (9) is a nozzle (7) with a gap layer structure, which is distributed obliquely in a ring along the edge of the liquid tray (6) and connected to the air passage of the air guide ring (5). Spiral auger (11) is rotated in the center of the liquid pan (6). The spiral auger (11) is driven by the impeller (9). The outer side of the spiral auger (11) is fitted with a guide tube (12) that connects to the outside of the cabin (1).

2. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 1, characterized in that: A drain pipe (8) is embedded on the side wall of the liquid tray (6). The height of the drain pipe (8) is lower than the top height of the nozzle (7) and it is connected to the bottom side of the liquid tray (6). A liquid outlet (13) is provided at the bottom of the chamber (1).

3. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 2, characterized in that: The drain pipe (8) is a U-shaped siphon pipe with its opening facing downwards.

4. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 1, characterized in that: The guide tube (12) is a semi-enclosed structure that connects the spiral auger (11) to the outside of the cabin (1).

5. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 1, characterized in that: The impeller (9) is fixedly connected to the auger (11) via a scraper (10) that is attached to the surface of the liquid pan (6). The scraper (10) is composed of a rigid connecting rod (101) and a rubber scraper (102) fixed on the connecting rod (101).

6. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 5, characterized in that: The scraper (102) has a J-shaped cross section, and the end of the connecting rod (101) that is fixedly connected to the impeller (9) is inclined toward the rotation direction of the impeller (9).

7. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 1, characterized in that: The nozzle (7) includes an air pipe (71) and a guide tube (73). The tail end of the air pipe (71) is connected to the air passage of the air guide ring (5), and the front end is obliquely inserted into the liquid pan (6). The blade structure on the impeller (9) is perpendicular. The guide tube (73) is sleeved on the outer side of the front end of the air pipe (71), and a gap layer is left between the guide tube (73) and the air pipe (71).

8. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 7, characterized in that: The guide tube (73) and the air pipe (71) are hinged, and the center of gravity of the guide tube (73) is offset from the hinge point.

9. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 8, characterized in that: The front end of the trachea (71) is provided with radially protruding hammer marks (72).

10. The environmental protection engineering construction waste gas purification device for a rubber product oven according to claim 8, characterized in that: The diameter of the through hole at the front end of the guide tube (73) is smaller than the diameter of the front end of the air pipe (71), and the inner side of the through hole is rounded.

Images