Paint spraying line heat energy recovery device
By designing a structure with the exhaust pipe opening facing up and the intake pipe opening facing down in the paint line exhaust gas treatment system, combining the fitting and fixing of the exhaust sub-pipe and the intake pipe, the problem of insufficient utilization and exchange interference of the exhaust gas heat is solved, and efficient recovery of exhaust gas heat and preheating of fresh air is achieved.
Patent Information
- Application Number
- CN202422598194.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing spray paint line exhaust gas still has a certain amount of heat that is not fully recycled after treatment, and there is a problem of mutual interference when heat exchange between the intake pipe and the exhaust pipe on the same side.
The design is to use the design where the exhaust pipe opening is located above and the intake pipe opening is located below. Heat exchange is performed through the vertical setting of the exhaust pipe and the intake pipe, and heat exchange is performed by the bonding of the exhaust sub-pipe and the intake pipe, and the fixing and guide are combined to improve the heat exchange efficiency.
The further recycling of exhaust gas heat is achieved, fresh air is preheated, heat exchange efficiency is improved, and mutual interference between intake and exhaust gas is avoided.
Smart Images
Figure CN223283502U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of paint spraying production lines, and in particular to a heat energy recovery device for a paint spraying line. Background Art
[0002] A painting line, also known as a spraying line or a coating line, refers to a special assembly line tool for covering metal and non-metal surfaces with a protective layer or a decorative layer.
[0003] The process of a paint spraying line generally includes upper conveyor chain - electrostatic dust removal - primer - leveling - topcoat - leveling - drying - cooling - unloading. The drying process requires a special drying room. During the entire operation of the paint spraying line, a large amount of exhaust gas will be generated. Generally, the exhaust gas from the jet chamber, leveling chamber and drying chamber is collected and treated by a set of systems. During the exhaust gas treatment process, heat energy will be recovered through a heat recovery device, such as the "zeolite rotor + RTO" waste heat recovery system used in the paint spraying line. The treated exhaust gas is then discharged centrally.
[0004] The existing waste gas generally still has a certain temperature when it is discharged after treatment, especially compared with the newly inhaled air sent into each room, and still has a certain heat recovery value. Utility Model Content
[0005] In order to better utilize the heat in the exhaust gas, the present application provides a heat energy recovery device for a paint spraying line.
[0006] The heat recovery device for a paint spraying line provided in this application adopts the following technical solution:
[0007] A heat energy recovery device for a paint spraying line includes an air intake pipe and an exhaust pipe. The air intake pipe inputs fresh air into each air chamber of the paint spraying line, and the exhaust pipe discharges treated exhaust gas. The exhaust end of the exhaust pipe is vertically arranged with the opening facing upward, and the air intake end of the air intake pipe is vertically arranged with the opening facing downward. The air intake pipe passes vertically through the exhaust pipe and exchanges heat with the exhaust gas in the exhaust pipe, and the opening of the exhaust pipe and the opening of the air intake pipe are respectively arranged upper and lower.
[0008] By adopting the above technical solution, the exhaust pipe cooperates with the intake pipe at the exhaust terminal position and the intake pipe at the intake starting position to perform heat exchange, thereby further recovering the heat in the exhausted exhaust gas and preheating the fresh air input by the intake pipe. In this process, the opening of the intake pipe is at the bottom and the opening of the exhaust pipe is at the top, so that the exhausted exhaust gas is not easily re-inhaled by the intake pipe, which solves the problem of mutual interference between intake and exhaust when the intake pipe and the exhaust pipe are arranged on the same side for heat exchange. Since the exhaust gas has a certain temperature, it is more reasonable to adopt a method in which the exhaust pipe opening is located at the top.
[0009] Optionally, the exhaust pipe includes at least two exhaust sub-pipes, which are respectively arranged on both sides of the intake pipe, and the exhaust sub-pipes are in contact with the intake pipe.
[0010] By adopting the above technical solution, the two exhaust sub-pipes are attached to the intake pipe, so that heat exchange can be better achieved. Compared with one exhaust pipe in contact with the intake pipe, the heat exchange degree of the two exhaust sub-pipes is higher.
[0011] Optionally, the air intake pipe is a round pipe, the exhaust sub-pipe is formed with a semicircular groove adapted to the air intake pipe, two exhaust sub-pipes are combined to form the exhaust pipe, and the two semicircular grooves of the two exhaust sub-pipes form an installation pipe for installing the air intake pipe.
[0012] By adopting the above technical solution, the exhaust sub-pipe is more completely fitted to the intake pipe, and the heat exchange efficiency is higher.
[0013] Optionally, the upper end of the intake pipe is fixed, the lower end of the exhaust pipe is fixed, and a fixing piece is installed on the upper end of the exhaust pipe, and the fixing piece fixes the upper ends of the two exhaust sub-pipes.
[0014] By adopting the above technical solution, the upper ends of the two exhaust sub-pipes are fixed by fixing parts, and then the free end of the exhaust pipe is fixed in conjunction with the intake pipe, and the free end of the intake pipe is fixed through the exhaust pipe. The reinforcement of the exhaust pipe and the intake pipe is completed by one fixing part, which is simpler and more effective.
[0015] Optionally, the fixing piece is annularly sleeved on the exhaust pipe, an annular groove is provided on the outer wall of the upper end of the exhaust pipe, and the fixing piece fills the annular groove.
[0016] By adopting the above technical solution, the fixing piece is installed at a predetermined position on the exhaust pipe and will not change position at will, thereby ensuring the stability of the fixing piece's fastening state to the exhaust pipe.
[0017] Optionally, a contact groove is provided on one side opposite to the two exhaust sub-pipes, and the contact groove is provided vertically. The air intake pipe is attached to the exhaust sub-pipes and closes the contact groove.
[0018] By adopting the above technical solution, the air flowing in the intake pipe is directly in contact with the exhaust pipe through the contact groove, thereby improving the heat exchange efficiency.
[0019] Optionally, the opening of the air intake pipe is provided with a guide, the guide is provided with a horizontally oriented air intake, the guide is connected to the opening of the air intake pipe, and the air intake is provided with a filter.
[0020] By adopting the above technical solution, the direction of air sucked into the air intake pipe is changed by the guide member, thereby reducing the entry of dust from the bottom, and the presence of the filter member further filters impurities in the air.
[0021] Optionally, the guide member includes two guide half shells, the two guide half shells are assembled to form the guide member, and the two guide half shells are assembled and fixed to the lower end of the exhaust pipe.
[0022] By adopting the above technical solution, the air flowing through the cavity in the guide can also be heated by the heat transferred from the part outside the exhaust pipe, and the guide also plays the role of clamping and fixing the exhaust pipe.
[0023] To sum up, the exhaust pipe cooperates with the intake pipe at the exhaust terminal position and the intake pipe at the intake starting position to perform heat exchange, thereby further recovering the heat in the exhausted exhaust gas and preheating the fresh air input by the intake pipe. In this process, the opening of the intake pipe is at the bottom, and the opening of the exhaust pipe is at the top, so that the exhausted exhaust gas is not easily re-inhaled by the intake pipe, which solves the problem of mutual interference between intake and exhaust when the intake pipe and the exhaust pipe are arranged on the same side for heat exchange. Since the exhaust gas has a certain temperature, it is more reasonable to adopt a method in which the exhaust pipe opening is located at the top. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 Schematic diagram of the structure of the recovery device in the embodiment of the present application;
[0025] Figure 2 Schematic diagram of the matching structure of the fixing member and the exhaust pipe in the embodiment of the present application;
[0026] Figure 3 Schematic diagram of the structure of the exhaust pipe in the embodiment of the present application;
[0027] Figure 4 It is a schematic diagram of the matching structure of the guide member and the exhaust pipe in an embodiment of the present application.
[0028] Explanation of the accompanying drawings: 1. Inlet pipe; 2. Exhaust pipe; 21. Exhaust sub-pipe; 22. Semicircular groove; 23. Semicircular notch; 24. Annular groove; 25. Contact groove; 3. Guide; 31. Guide half shell; 32. Air inlet; 33. Filter; 4. Fixing; 41. Fixing ring; 42. Filter screen; 43. Baffle; 44. Connecting column; 5. Mounting pipe; 6. Circular perforation. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-4 This application is described in further detail.
[0030] The embodiment of the present application discloses a heat recovery device for a paint spraying line.
[0031] Reference Figure 1 、 Figure 2 and Figure 3 A heat energy recovery device for a paint spraying line includes an intake pipe 1, an exhaust pipe 2, a guide 3 and a fixing part 4. The intake pipe 1 inputs fresh air into each air chamber of the paint spraying line, and the exhaust pipe 2 discharges treated exhaust gas. The intake pipe 1 and the exhaust pipe 2 are combined with each other to realize heat exchange, and the fresh air in the intake pipe 1 is heated by the exhaust gas in the exhaust pipe 2.
[0032] Specifically, in this embodiment, the air intake pipe 1 is a circular tube, and the air intake pipe 1 is arranged vertically. The upper end of the air intake pipe 1 is fixed to the wall of the factory building where the paint line is located and extends into the factory building where the paint line is located. The lower end of the air intake pipe 1 extends vertically downward, and the lower end opening of the air intake pipe 1 faces downward for inhaling fresh air from the outside.
[0033] The exhaust pipe 2 includes an exhaust sub-pipe 21. In this embodiment, the exhaust pipe 2 is composed of two exhaust sub-pipes 21. The two exhaust sub-pipes 21 are arranged on both sides of the intake pipe 1, and the exhaust sub-pipes 21 are fitted with the intake pipe 1. The specific fitting method is that the exhaust sub-pipe 21 is formed with a semicircular groove 22 that adapts to the intake pipe 1. The two exhaust sub-pipes 21 are combined to form the exhaust pipe 2. The two semicircular grooves 22 of the two exhaust sub-pipes 21 form an installation pipe 5 for installing the intake pipe 1. The inner wall of the installation pipe 5 completely fits the outer wall of the intake pipe 1. Since the intake pipe 1 is a circular pipe, the installation pipe 5 is also a circular pipe. At the same time, the exhaust pipe 2 formed by the two exhaust sub-pipes 21 is also a circular pipe, and the outer diameter of the exhaust pipe 2 is larger than the outer diameter of the intake pipe 1. When the exhaust pipe 2 and the intake pipe 1 are assembled together, the exhaust pipe 2 is coaxial with the intake pipe 1.
[0034] In another embodiment, the number of the exhaust sub-pipes 21 may be more than two, and it is only necessary to assemble the installation pipe 5 adapted to the intake pipe 1 .
[0035] The lower end of the above-mentioned exhaust sub-pipe 21 is fixed to the wall of the factory building of the paint line and extends into the factory building where the paint line is located. The upper end of the exhaust sub-pipe 21 extends vertically upward, and the upper end of the exhaust sub-pipe 21 passes over the air intake pipe 1 and opens upward for exhausting to the outside. The exhaust sub-pipe 21 is provided with a semicircular notch 23 at the position where the air intake pipe 1 bends into the factory building. The semicircular notches 23 of the two exhaust sub-pipes 21 form a circular through-hole 6 that adapts to the air intake pipe 1 after bending.
[0036] The fixing member 4 is used to fix the upper ends of the two exhaust sub-pipes 21, so that the upper ends of the exhaust pipes 2 are clamped and fixed to the upper ends of the intake pipes 1, thereby stabilizing the upper ends of the exhaust pipes 2 through the intake pipes 1. The fixing member 4 includes a fixing ring 41, a filter screen 42 and a baffle 43. The fixing ring 41 is annular and is sleeved on the outside of the exhaust pipe 2. An annular groove 24 is provided on the outer wall of the upper end of the exhaust pipe 2. The fixing member 4 fills the annular groove 24. The filter screen 42 is installed on the fixing ring 41 to close the opening of the upper end of the exhaust pipe 2, thereby blocking and filtering the inside and outside of the exhaust pipe 2. The diameter of the baffle 43 is larger than the outer diameter of the fixing ring 41 and is coaxial. A plurality of connecting columns 44 are provided on the fixing ring 41. In this embodiment, there are three connecting columns 44. The three connecting columns 44 are arranged at equal angles around the fixing ring 41. The lower end of the connecting column 44 is integrated with the fixing ring 41, and the upper end of the connecting column 44 is integrated with the baffle 43. The baffle 43 limits rainwater and other liquids from falling directly into the exhaust pipe 2.
[0037] At the same time, the exhaust sub-pipe 21 is provided with a contact groove 25 on the groove wall of the semicircular groove 22. The contact groove 25 is vertically opened and passes through the inside and outside of the exhaust sub-pipe 21, and the intake pipe 1 fits the groove wall of the semicircular groove 22 and closes the contact groove 25, so that the gas in the exhaust sub-pipe 21 directly contacts the outer wall of the intake pipe 1, and the width of the contact groove 25 can fluctuate within a certain range according to demand. In this embodiment, the angle of the contact groove 25 is half of the semicircular groove 22, that is, 90 degrees, and is located in the middle.
[0038] Reference Figure 1 and Figure 4 The guide member 3 is used to connect to the opening of the intake pipe 1, change the direction of suction to horizontal and filter the air. Specifically, the guide member 3 includes two guide half shells 31. The two guide half shells 31 are assembled to form the guide member 3 and fixed by clamping or welding, and the two guide half shells 31 are assembled and fixed to the lower end of the exhaust pipe 2. The part of the guide member 3 close to the exhaust pipe 2 is a structure that adapts to the bent part of the lower end of the exhaust pipe 2, that is, a 90-degree bent pipe with a diameter larger than the exhaust pipe 2. The side of the guide member 3 away from the exhaust pipe 2 is funnel-shaped, and the side with the larger opening of the funnel-shaped part of the guide member 3 serves as an air inlet 32. The air inlet 32 is arranged horizontally, and a filter 33 is installed on the air inlet 32. The filter 33 can be an air filter.
[0039] In another embodiment, the intake pipe 1 may also be a pipe of other shapes. In this case, the installation pipe 5 in the exhaust pipe 2 also adapts to the shape of the intake pipe 1 accordingly. At the same time, the shape of the exhaust pipe 2 may also adopt other shapes as needed, and the shapes of the fixing member 4 and the guide member 3 may be changed accordingly to adapt.
[0040] The implementation principle of a heat energy recovery device for a paint spraying line in an embodiment of the present application is as follows: the intake pipe 1 continuously draws in fresh air from the outside, and the exhaust pipe 2 continuously discharges treated exhaust gas to the outside. In this process, the fresh air in the intake pipe 1 is continuously heated by the exhaust gas in the exhaust pipe 2 wrapped outside the intake pipe 1, thereby achieving the effect of further recovery of waste heat.
[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A heat recovery device for a paint spraying line, characterized by: The invention comprises an air intake pipe (1) and an exhaust pipe (2), wherein the air intake pipe (1) inputs fresh air into each air chamber of the painting line, and the exhaust pipe (2) discharges treated waste gas, the exhaust end of the exhaust pipe (2) is vertically arranged with the opening facing upward, and the intake end of the air intake pipe (1) is vertically arranged with the opening facing downward, the air intake pipe (1) passes vertically through the exhaust pipe (2) and performs heat exchange with the waste gas in the exhaust pipe (2), and the opening of the exhaust pipe (2) and the opening of the air intake pipe (1) are respectively arranged upper and lower.
2. A paint spraying line heat recovery device according to claim 1, characterized in that: The exhaust pipe (2) comprises at least two exhaust sub-pipes (21), the two exhaust sub-pipes (21) being arranged on both sides of the intake pipe (1), and the exhaust sub-pipes (21) being in contact with the intake pipe (1).
3. The heat recovery device for a paint spraying line according to claim 2, characterized in that: The air intake pipe (1) is a circular pipe, the exhaust sub-pipe (21) is formed with a semicircular groove (22) adapted to the air intake pipe (1), two exhaust sub-pipes (21) are combined to form the exhaust pipe (2), and the two semicircular grooves (22) of the two exhaust sub-pipes (21) form an installation pipe (5) for installing the air intake pipe (1).
4. A heat recovery device for a paint spraying line according to claim 2, characterized in that: The upper end of the intake pipe (1) is fixed, the lower end of the exhaust pipe (2) is fixed, and a fixing member (4) is installed on the upper end of the exhaust pipe (2), and the fixing member (4) fixes the upper ends of the two exhaust sub-pipes (21).
5. The heat recovery device for a paint spraying line according to claim 4, characterized in that: The fixing member (4) is annularly sleeved on the exhaust pipe (2); an annular groove (24) is provided on the outer wall of the upper end of the exhaust pipe (2); and the fixing member (4) fills the annular groove (24).
6. The heat recovery device for a paint spraying line according to claim 2, characterized in that: A contact groove (25) is provided on one side opposite to the two exhaust sub-pipes (21), and the contact groove (25) is provided vertically. The air inlet pipe (1) is fitted with the exhaust sub-pipes (21) and closes the contact groove (25).
7. The heat recovery device for a paint spraying line according to claim 1, characterized in that: The opening of the air intake pipe (1) is provided with a guide member (3), the guide member (3) is provided with a horizontally oriented air intake port (32), the guide member (3) is connected to the opening of the air intake pipe (1), and the air intake port (32) is provided with a filter member (33).
8. The heat recovery device for a paint spraying line according to claim 7, characterized in that: The guide member (3) comprises two guide half shells (31), the two guide half shells (31) are assembled to form the guide member (3), and the two guide half shells (31) are assembled and fixed to the lower end of the exhaust pipe (2).