A painting line rto plant

Abstract

The utility model relates to RTO equipment field discloses a kind of coating line RTO equipment, including furnace body, the top of furnace body is equipped with burner, the lower right side of burner is equipped with control valve group, the lower part of control valve group is equipped with driving assembly, the lower part of furnace body is equipped with ash valve, the control valve group includes shell, the lower part of shell is fixedly connected with support, the middle part of shell is equipped with waste gas pipe, the middle part of waste gas pipe is rotatably connected with air pipe, the right end of waste gas pipe is rotatably connected with rotary joint, the left end of waste gas pipe is fixedly connected with control head, the middle part of control head is equipped with cavity, the lower part of cavity is equipped with waste gas conveying cavity.In the utility model, by setting control valve group and driving assembly, the device can use rotary multi-way valve to replace traditional poppet valve, the valve group structure is more compact, the sealing is better, and the wear is small, can effectively improve the service life of device, more practical.

Description

Technical Field

[0001] This utility model relates to the field of RTO equipment, and in particular to an RTO equipment for a coating line. Background Technology

[0002] Painting lines generate large amounts of waste gas containing volatile organic compounds (VOCs) during production. Direct emission of this waste gas would cause serious environmental pollution and waste the heat energy contained within it. Regenerative thermal oxidizers (RTOs) are currently a commonly used device for treating waste gas from painting lines. They oxidize and decompose VOCs into harmless carbon dioxide and water through high-temperature combustion, and recover the heat energy generated by combustion using a heat storage medium.

[0003] Existing traditional RTO equipment often uses lift valves to facilitate gas flow. However, the regenerator switching valve is prone to wear during frequent switching and lifting, resulting in poor sealing, which affects processing efficiency and makes it impractical. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a coating line RTO device, which aims to improve the problem that some existing traditional RTO devices often use lift valves to facilitate gas flow, but the heat storage switching valve is prone to wear during frequent switching and lifting, resulting in poor sealing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coating line RTO equipment, comprising a furnace body, a burner installed on the top of the furnace body, a control valve assembly installed on the lower right side of the burner, a drive component installed on the lower part of the control valve assembly, an ash discharge valve installed on the lower part of the furnace body, the control valve assembly comprising a housing, a bracket fixedly connected to the lower part of the housing, an exhaust gas pipe installed in the middle of the housing, an air pipe rotatably connected to the middle of the exhaust gas pipe, a rotary joint rotatably connected to the right end of the exhaust gas pipe, a control head fixedly connected to the left end of the exhaust gas pipe, a cavity opened in the middle of the control head, an exhaust gas conveying chamber opened in the lower part of the cavity, an air conveying chamber opened on the left side of the cavity, the air conveying chamber being connected to the air pipe, and air connectors b, c, and a sequentially arranged from front to back on the upper part of the outer wall of the housing, and exhaust gas connectors c, a, and b sequentially arranged from front to back on the lower part of the outer wall of the housing.

[0006] As a further description of the above technical solution:

[0007] The drive assembly includes a motor, which is fixedly connected to a bracket. The output end of the motor is fixedly connected to a rotating shaft via a coupling. A drive gear is fixedly connected to the left side of the rotating shaft, and a driven gear is fixedly connected to the upper part of the drive gear. The driven gear is fixedly connected to the exhaust pipe.

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

[0009] The upper part of the furnace body is provided with a combustion chamber, and the lower part of the furnace body is provided with heat storage chamber A, heat storage chamber B and heat storage chamber C from left to right.

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

[0011] The lower parts of heat storage chambers A, B, and C are all fixedly connected to ash collection plates, and the inner walls of heat storage chambers A, B, and C are all fixedly connected to ceramic heat storage bodies. The inner walls of the ceramic heat storage bodies are fixedly connected to air inlet rings.

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

[0013] The lower part of the heat storage chamber A is equipped with a waste gas dispersion pipe a, the lower part of the heat storage chamber B is equipped with a waste gas dispersion pipe b, and the lower part of the heat storage chamber C is equipped with a waste gas dispersion pipe c. A dispersion plate is installed in the middle of the waste gas dispersion pipe a, waste gas dispersion pipe b, and waste gas dispersion pipe c.

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

[0015] The air connector a is connected to the air intake ring located in the heat storage chamber A via a pipe, the air connector c is connected to the air intake ring located in the heat storage chamber C via a pipe, and the air connector b is connected to the air intake ring located in the heat storage chamber B via a pipe.

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

[0017] The exhaust gas connector c is connected to the exhaust gas dispersion pipe c via a pipe, the exhaust gas connector a is connected to the exhaust gas dispersion pipe a via a pipe, and the exhaust gas connector b is connected to the exhaust gas dispersion pipe b via a pipe.

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

[0019] The lower part of each of the heat storage chambers A, B, and C is equipped with a clean gas exhaust pipe.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting up a control valve group and a drive component, the device can use a rotary multi-way valve to replace the traditional lift valve. The valve group structure is more compact, the sealing performance is better, and the wear is less, which can effectively improve the service life of the device and make it more practical.

[0022] 2. In this utility model, by setting up the cooperation between components such as the air inlet ring and the air pipe, as well as the cooperation between the ash collection plate and the ash discharge valve, the heat storage body can be cleaned regularly by gas backflushing, maintaining the heat exchange efficiency of the device, reducing pressure drop, and making it more practical. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an RTO (Regenerative Thermal Oxidizer) equipment for a coating line proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the overall rear three-dimensional structure of an RTO equipment for a coating line proposed in this utility model;

[0025] Figure 3 This is a three-dimensional cross-sectional structural diagram of the furnace body of an RTO (Regenerative Thermal Oxidizer) equipment for a coating line proposed in this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the control valve group and drive assembly of the RTO equipment for a coating line proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the overall three-dimensional structure of the drive valve group of the RTO equipment in the coating line proposed in this utility model;

[0028] Figure 6 This is a three-dimensional cross-sectional structural diagram of the drive valve group of an RTO equipment for a coating line proposed in this utility model.

[0029] Legend:

[0030] 1. Furnace body; 2. Burner; 3. Control valve assembly; 4. Drive assembly; 5. Ash discharge valve; 6. Dispersion plate; 7. Support; 8. Clean gas discharge pipe; 11. Combustion chamber; 12. Regenerator A; 13. Regenerator B; 14. Regenerator C; 15. Ceramic regenerator; 16. Inlet ring; 17. Ash collection plate; 121. Waste gas dispersion pipe a; 131. Waste gas dispersion pipe b; 141. Waste gas dispersion pipe c; 31. Outer shell; 32. Exhaust pipe; 33. Air pipe; 34. Rotary joint; 311. Air connector a; 312. Air connector c; 313. Air connector b; 314. Exhaust pipe c; 315. Exhaust pipe a; 316. Exhaust pipe b; 321. Control head; 322. Cavity; 323. Exhaust gas conveying chamber; 324. Air conveying chamber; 41. Motor; 42. Shaft; 43. Drive gear; 44. Driven gear. Detailed Implementation

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

[0032] Reference Figures 1-3 This utility model provides an embodiment of a coating line RTO equipment, including a furnace body 1. A burner 2 is installed on the top of the furnace body 1 to assist in heating the furnace body 1 and in waste gas treatment. A control valve group 3 is installed on the lower right side of the burner 2 to assist in controlling the gas flow in each heat storage chamber. A drive assembly 4 is installed at the lower part of the control valve group 3 to assist in the control of the control valve group 3. An ash discharge valve 5 is installed at the lower part of the furnace body 1 to assist in cleaning the heat storage chamber. The control valve group 3 includes a housing 31 to connect various components. A bracket 7 is fixedly connected to the lower part of the housing 31 to support each control valve group 3 and the drive assembly 4.

[0033] Furthermore, a combustion chamber 11 is provided at the upper part of the furnace body 1 to assist in the combustion of waste gas and its treatment. From left to right, regenerators A12, B13, and C14 are sequentially arranged at the lower part of the furnace body 1. Each of the regenerators A12, B13, and C14 has a fixedly connected ash collection plate 17 at its lower part, which is inclined and has a V-shaped groove in its center for collecting impurities. Ceramic heat storage bodies 15 are fixedly connected to the inner walls of each of the regenerators A12, B13, and C14 to preheat the waste gas and absorb the residual heat of the treated gas. An air inlet ring 16 is fixedly connected to the inner wall of the ceramic heat storage body 15 to assist in the preheating of the waste gas and absorption of the residual heat of the treated gas. The gas input is provided by a waste gas dispersion pipe a121 installed at the bottom of heat storage chamber A12, a waste gas dispersion pipe b131 installed at the bottom of heat storage chamber B13, and a waste gas dispersion pipe c141 installed at the bottom of heat storage chamber C14. To facilitate the input and treatment of waste gas, a dispersion plate 6 is installed in the middle of each of the waste gas dispersion pipes a121, b131, and c141, resulting in a more uniform distribution of waste gas within the chambers. This plate can be a perforated plate distributor. Clean gas discharge pipes 8 are installed at the bottom of each of the heat storage chambers A12, B13, and C14. Valves are installed in the middle of each of the multiple clean gas discharge pipes 8, and the clean gas discharge pipes 8 are connected to the discharge equipment.

[0034] like Figures 4-6As shown, an exhaust pipe 32 is installed in the middle of the outer casing 31 for conveying exhaust gas. An air pipe 33 is rotatably connected to the middle of the exhaust pipe 32 for conveying fresh air. A rotary joint 34 is rotatably connected to the right end of the exhaust pipe 32 for connecting to an exhaust gas conveying fan to facilitate the conveying of exhaust gas and the rotation of the exhaust pipe 32. A control head 321 is fixedly connected to the left end of the exhaust pipe 32 for guiding the exhaust gas and air. A cavity 322 is formed in the middle of the control head 321 for facilitating the conveying of exhaust gas and the installation of the air pipe 33. The lower part of cavity 22 is provided with an exhaust gas conveying chamber 323, which is used to convey exhaust gas to exhaust gas connector c314, exhaust gas connector a315 or exhaust gas connector b316. An air conveying chamber 324 is provided on the left side of cavity 322, which is used to convey air to air conveying chamber 324 and connect to air pipe 33. The upper part of the outer wall of outer shell 31 is provided with air connector a311, air connector c312 and air connector b313 from front to back. The lower part of the outer wall of outer shell 31 is provided with exhaust gas connector c314, exhaust gas connector a315 and exhaust gas connector b316 from front to back.

[0035] Furthermore, air connector b313 is connected to the air intake ring 16 located in the heat storage chamber A12 via a pipe, air connector c312 is connected to the air intake ring 16 located in the heat storage chamber C14 via a pipe, air connector a311 is connected to the air intake ring 16 located in the heat storage chamber B13 via a pipe, for the purpose of coordinating air delivery, exhaust gas connector c314 is connected to the exhaust gas dispersion pipe c141 via a pipe, exhaust gas connector a315 is connected to the exhaust gas dispersion pipe a121 via a pipe, and exhaust gas connector b316 is connected to the exhaust gas dispersion pipe b131 via a pipe, for the purpose of coordinating exhaust gas delivery.

[0036] Furthermore, the drive assembly 4 includes a motor 41, which is used to provide power to the assembly. The motor 41 is fixedly connected to the bracket 7. The output end of the motor 41 is fixedly connected to a rotating shaft 42 via a coupling, which is used to connect various components. The left side of the rotating shaft 42 is fixedly connected to a drive gear 43, which is used to drive the driven gear 44 to rotate. The upper part of the drive gear 43 is fixedly connected to the driven gear 44. The driven gear 44 is fixedly connected to the exhaust pipe 32, which is used to drive the exhaust pipe 32 to rotate.

[0037] Working principle: First, the burner 2 is turned on. Then, the exhaust gas is conveyed through the rotary joint 34 into the exhaust gas pipe 32, and then through the exhaust gas pipe 32 into the exhaust gas conveying chamber 323. From there, it is conveyed through the exhaust gas connector a315 to the exhaust gas dispersion pipe a121, and then into the heat storage chamber A12. At the same time, air enters the air conveying chamber 324 through the air pipe 33 and is conveyed to the air connector c312. From the air connector c312, it is conveyed to the air intake ring 16 in the heat storage chamber C14, and then discharged from the air intake ring 16. The exhaust gas supplied to the auxiliary heat storage chamber A12 is combusted. The combusted gas is then discharged through the clean gas discharge pipe 8 at the bottom of the heat storage chamber B13. Simultaneously, the ceramic heat storage element 15 in the heat storage chamber B13 absorbs heat and heats up. Then, the motor 41 is turned on, causing the rotating shaft 42 to rotate. The rotating shaft 42 then drives the drive gear 43 to rotate, which in turn drives the driven gear 44 to rotate, thereby causing the exhaust gas pipe 32 to rotate, and causing the control head 321 fixed to it to rotate. This connects the exhaust gas delivery chamber 323 to the exhaust gas connector b316, and the air delivery chamber 324 to the air connector a311. At this time, the exhaust gas is delivered to the heated regenerator chamber B13 and enters the combustion chamber 11 for combustion. Air then enters the regenerator chamber A12 to assist in the combustion of the exhaust gas. The treated gas is then discharged through the clean gas exhaust pipe 8 at the bottom of the regenerator chamber C14. Then, the drive assembly 4 is activated again, causing the control head 321 to rotate, thereby connecting the exhaust gas delivery chamber 323 to the exhaust gas connector c314. The air delivery chamber 324 is connected to the air connector b313, and the exhaust gas will enter the heat storage chamber C14, and then enter the combustion chamber 11 for combustion. The ceramic heat storage body 15 in the heat storage chamber C14 will be heated, while the air will enter the heat storage chamber B13 to dissipate heat and cool down the heat storage chamber B13. At the same time, it will assist the exhaust gas sent out from the heat storage chamber C14 in combustion. The gas after combustion will be discharged through the clean gas discharge pipe 8 at the bottom of the heat storage chamber A12. The above three stages are repeated continuously to treat the exhaust gas.

[0038] When the heat storage chamber needs to be cleaned, simply supply backflushing gas to the air inlet ring 16 in the corresponding heat storage chamber through the corresponding air connector to perform backflushing cleaning of the heat storage chamber. The dust and impurities removed can be discharged through the dust collection plate 17 and the ash discharge valve 5.

[0039] Additionally, it should be noted that components not described in detail in this article are existing technologies.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coating line RTO device, comprising a furnace body (1), characterized in that: A burner (2) is installed on the top of the furnace body (1). A control valve assembly (3) is installed on the lower right side of the burner (2). A drive assembly (4) is installed on the lower part of the control valve assembly (3). An ash discharge valve (5) is installed on the lower part of the furnace body (1). The control valve assembly (3) includes a housing (31). A bracket (7) is fixedly connected to the lower part of the housing (31). An exhaust pipe (32) is installed in the middle of the housing (31). An air pipe (33) is rotatably connected to the middle of the exhaust pipe (32). A rotating joint (34) is rotatably connected to the right end of the exhaust pipe (32). A control valve is fixedly connected to the left end of the exhaust pipe (32). The control head (321) has a cavity (322) in the middle, a waste gas conveying cavity (323) in the lower part of the cavity (322), an air conveying cavity (324) in the left side of the cavity (322), and the air conveying cavity (324) is connected to the air pipe (33). The upper part of the outer wall of the outer shell (31) is provided with air connector b (313), air connector c (312), and air connector a (311) from front to back. The lower part of the outer wall of the outer shell (31) is provided with waste gas connector c (314), waste gas connector a (315), and waste gas connector b (316) from front to back.

2. The coating line RTO equipment according to claim 1, characterized in that: The drive assembly (4) includes a motor (41), which is fixedly connected to the bracket (7). The output end of the motor (41) is fixedly connected to a rotating shaft (42) via a coupling. A drive gear (43) is fixedly connected to the left side of the rotating shaft (42), and a driven gear (44) is fixedly connected to the upper part of the drive gear (43). The driven gear (44) is fixedly connected to the exhaust pipe (32).

3. The coating line RTO equipment according to claim 1, characterized in that: The upper part of the furnace body (1) is provided with a combustion chamber (11), and the lower part of the furnace body (1) is provided with a heat storage chamber A (12), a heat storage chamber B (13), and a heat storage chamber C (14) from left to right.

4. The coating line RTO equipment according to claim 3, characterized in that: The lower part of each of the heat storage chambers A (12), B (13), and C (14) is fixedly connected to a dust collection plate (17). The inner walls of each of the heat storage chambers A (12), B (13), and C (14) are fixedly connected to a ceramic heat storage body (15). The inner wall of the ceramic heat storage body (15) is fixedly connected to an air intake ring (16).

5. The coating line RTO equipment according to claim 3, characterized in that: The lower part of the heat storage chamber A (12) is equipped with a waste gas dispersion pipe a (121), the lower part of the heat storage chamber B (13) is equipped with a waste gas dispersion pipe b (131), the lower part of the heat storage chamber C (14) is equipped with a waste gas dispersion pipe c (141), and a dispersion plate (6) is installed in the middle of the waste gas dispersion pipe a (121), waste gas dispersion pipe b (131), and waste gas dispersion pipe c (141).

6. The coating line RTO equipment according to claim 4, characterized in that: The air connector a (311) is connected to the air intake ring (16) located in the heat storage chamber A (12) via a pipe, the air connector c (312) is connected to the air intake ring (16) located in the heat storage chamber C (14) via a pipe, and the air connector b (313) is connected to the air intake ring (16) located in the heat storage chamber B (13) via a pipe.

7. The coating line RTO equipment according to claim 5, characterized in that: The exhaust gas connector c (314) is connected to the exhaust gas dispersion pipe c (141) through a pipe, the exhaust gas connector a (315) is connected to the exhaust gas dispersion pipe a (121) through a pipe, and the exhaust gas connector b (316) is connected to the exhaust gas dispersion pipe b (131) through a pipe.

8. The coating line RTO equipment according to claim 3, characterized in that: Clean gas exhaust pipes (8) are installed at the lower part of the heat storage chambers A (12), B (13), and C (14).

Images