Heat recovery device of paint baking furnace

Abstract

The utility model provides a heat recovery device of a paint baking furnace, which comprises a furnace body, one end of the furnace body is communicated with a heat recovery pipe, one end of the heat recovery pipe is correspondingly provided with a heat exchanger, one end of the heat exchanger is communicated with a discharge-in pipe, the peripheral edges of the discharge-in pipe and the heat recovery pipe are fixedly provided with connecting discs, and the connecting discs are connected with the heat recovery pipe. A sealing cover is fixedly installed on the upper half section between the two connecting discs, a recycling and filtering assembly is detachably installed between the two connecting discs, and the other end of the recycling and filtering assembly is inserted into the sealing cover. Through the design of the connecting disc, the recycling and filtering assembly, the bearing ring and the hydraulic cylinder, paint mist, particulate matter and other impurities in waste gas can be intercepted through the recycling and filtering assembly, the problem that the heat exchanger is blocked in the heat recycling process can be effectively solved, and troubles caused by follow-up dismounting, mounting and cleaning are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of baking finish stove, concretely relates to a heat recovery device of baking finish stove. BACKGROUND

[0002] Baking finish stove (also called baking finish room or baking stove) is a kind of industrial equipment for curing treatment after the surface of object is coated, and it is used to make coating (paint, powder coating etc.) dry and cure quickly by heating, to form uniform and durable paint film.It is the core equipment in coating process, and is widely used in the fields of automobile manufacturing, furniture production, mechanical processing, electronic product shell treatment etc.

[0003] A kind of mobile phone shell baking finish device with waste gas treatment and waste heat recovery function is disclosed in Chinese patent with announcement number CN205413543U, including drive motor, conveying belt, heating device, sealed box, exhaust device, heat exchange pipe, air blast device, waste gas treatment tower, waste gas conveying pipeline, water pump and air injection device, the sealed box is cuboid, and its inside is provided with conveying belt, the transmission shaft of conveying belt is connected with the drive motor outside, heating device is arranged in the inside of sealed box, the top and bottom of sealed box are provided with exhaust device and air injection device respectively.The utility model utilizes the conveying belt in the sealed box to convey the mobile phone shell to be baked, can carry out baking finish processing with maximum quantity, improves yield and efficiency, adopts heat exchange pipe to recover the heat in waste gas, and waste gas treatment tower handles harmful gas in waste gas, protects environment, while it is beneficial to the health of worker.

[0004] However, the heat recovery device of the current baking finish stove is prone to form carbon deposition or sticky residues on the heat exchange surface during the recovery process due to the presence of paint mist, oil stains and particulate matter in the baking finish waste gas, which can cause blockage and affect subsequent recovery, and the cleaning and disassembly are troublesome and require a lot of time. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of heat recovery device of baking finish stove to solve the problems presented in background art.

[0006] The specific technical solutions are as follows:

[0007] A kind of heat recovery device of baking finish stove, comprising: furnace body, the one end of the furnace body is communicated with heat recovery pipe, the one end of the heat recovery pipe is correspondingly provided with heat exchanger, the one end of the heat exchanger is communicated with inlet pipe, the periphery circumferential edge of the inlet pipe and the heat recovery pipe is fixedly installed with connecting disc, the upper half section between the two groups of connecting discs is fixedly installed with sealing cover, the recovery filter assembly is detachably installed between the two groups of connecting discs, and the other end of the recovery filter assembly is inserted into the sealing cover.

[0008] As one preferred scheme of the utility model, the lower end of the recovery filter assembly is equipped with a hydraulic cylinder, the extended end of the hydraulic cylinder is connected with a bearing ring, and the inner wall of the bearing ring is attached to the lower surface of the recovery filter assembly.

[0009] As one preferred scheme of the utility model, the other end of the heat exchanger is communicated with a discharge pipe, the other end of the discharge pipe is connected with an induced draft fan, and the inner wall of the heat recovery pipe is coated with a polytetrafluoroethylene coating for corrosion prevention.

[0010] As one preferred scheme of the utility model, the recovery filter assembly comprises a dismounting pipe, the dismounting pipe is detachably installed between the two groups of connecting discs, a plurality of thread grooves corresponding in matching are formed in the connecting disc and the attaching surface of the connecting disc, and the thread grooves are threadedly connected with positioning bolts.

[0011] As one preferred scheme of the utility model, two groups of metal grilles are detachably installed in the dismounting pipe, sliding blocks are fixedly installed at both ends of the outer surface of the metal grilles, a sliding groove is formed in the inner wall of the dismounting pipe, the sliding groove is provided with two groups of upper and lower symmetries, the sliding blocks are slidingly installed in the sliding groove, mounting bolts are inserted at one end of the sliding blocks, and the other end of the mounting bolts is inserted into one end of the inner wall of the sliding groove.

[0012] As one preferred scheme of the utility model, sealing rings are bonded at one end of the surfaces on both sides of the dismounting pipe, the edges of the sealing rings are chamfered to facilitate pressure deformation sealing, and the metal grilles are made of stainless steel.

[0013] The utility model has the following beneficial effects:

[0014] 1. The heat recovery device of the baking paint furnace provided by the utility model can intercept impurities such as paint mist and particulate matter in waste gas through the design of the connecting disc, the recovery filter assembly, the bearing ring and the hydraulic cylinder, can effectively prevent the problem of heat exchanger blockage in the heat recovery process, reduces the trouble caused by subsequent dismounting and cleaning, and when the recovery filter assembly needs to be dismounted or adjusted in position, the hydraulic cylinder can control the bearing ring to drive the recovery filter assembly to ascend and descend, so that the recovery filter assembly can better cooperate with components such as the connecting disc, the stability and sealing performance of the whole device are ensured, the artificial dismounting strength is reduced, the maintenance risk is reduced, waste gas heat can be recovered for preheating fresh air or production water when passing through the heat exchanger, the heating energy consumption of the baking paint furnace is reduced, low-temperature waste gas after heat exchange is discharged through the discharge pipe and the induced draft fan, the sealing cover can prevent hot waste gas from leaking from the upper half, plays a sealing role, ensures the flow of hot waste gas in the pipeline, reduces heat loss, the polytetrafluoroethylene coating coated on the inner wall of the heat recovery pipe can improve the service life thereof and reduce damage to the pipeline in the heat recovery process, thereby solving the problems of easy blockage, difficult maintenance and large heat loss of the heat recovery device of the baking paint furnace.

[0015] 2. The heat recovery device of the paint baking oven provided by the utility model, through the design of the detachable pipe, the metal grid and the chute, the metal grid is installed in cooperation with the chute on the inner wall of the detachable pipe through the sliding block and is fixed through the mounting bolt, the metal grid is convenient to disassemble and replace, cleaning and maintenance are facilitated, the time consumed for cleaning and disassembly is reduced, when the hot waste gas enters the detachable pipe through the heat recovery pipe, the metal grid installed on the inner wall of the detachable pipe can intercept and filter the paint mist particles and other impurities in the hot waste gas, so that the separation of the paint mist and the hot waste gas is realized, the influence of the paint mist on the subsequent heat recovery device is reduced, the heat exchanger is protected from being polluted and blocked by the paint mist, the long-term efficient heat transfer of the heat exchanger is maintained, the edge of the sealing ring is chamfered, the gap of the connecting part can be filled, the sealing effect is further enhanced, and the leakage of the hot waste gas from the connecting part of the detachable pipe and the connecting disc is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure of the heat recovery device of the paint baking oven provided by the utility model embodiment Figure One

[0017] Figure 2 The bearing ring structure of the heat recovery device of the paint baking oven provided by the utility model embodiment Figure Two

[0018] Figure 3 The connecting disc structure of the heat recovery device of the paint baking oven provided by the utility model embodiment Figure Three

[0019] Figure 4 The recovery and filtration assembly structure of the heat recovery device of the paint baking oven provided by the utility model embodiment Figure Four

[0020] Figure 5 The stainless steel filter screen structure of the heat recovery device of the paint baking oven provided by the utility model embodiment Figure Five

[0021] IN THE DRAWINGS

[0022] 1, furnace body; 101, heat recovery pipe;

[0023] 2, sealing cover; 201, connecting disc;

[0024] 3, recovery and filtration assembly; 301, detachable pipe; 302, positioning bolt; 303, sealing ring; 304, chute; 305, metal grid; 306, mounting bolt; 307, sliding block;

[0025] 4, hydraulic cylinder; 401, bearing ring;

[0026] 5, heat exchanger; 501, inlet pipe; 502, outlet pipe; 503, induced draft fan.​​​​​ DETAILED DESCRIPTION

[0027] The technical solutions of the utility model are further illustrated below in combination with the drawings and through specific embodiments.

[0028] The drawings are only used for illustrative explanation, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the patent; in order to better illustrate the embodiments of the utility model, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0029] In the description of the utility model, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative explanation, and cannot be understood as a limitation on the patent, and for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, if the term "connection" and the like appear to indicate the connection relationship between components, the term should be broadly understood, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0031] Embodiment 1

[0032] The heat recovery device of the baking paint oven provided in the embodiment, like Figures 1-5As shown, including: furnace body 1, one end of the furnace body 1 is communicated with heat recovery pipe 101, one end of the heat recovery pipe 101 is correspondingly provided with heat exchanger 5, one end of the heat exchanger 5 is communicated with the discharge pipe 501, the discharge pipe 501 and the peripheral edge of the heat recovery pipe 101 are fixedly installed with the connecting disc 201, the upper half section between the two groups of connecting disc 201 is fixedly installed with the sealing cover 2, the recovery filter assembly 3 is detachably installed between the two groups of connecting disc 201, and the other end of the recovery filter assembly 3 is inserted into the sealing cover 2. The lower end of the recovery filter assembly 3 is provided with a hydraulic cylinder 4, the extension end of the hydraulic cylinder 4 is connected with a bearing ring 401, and the inner wall of the bearing ring 401 is attached to the lower surface of the recovery filter assembly 3. The other end of the heat exchanger 5 is communicated with the exhaust pipe 502, the other end of the exhaust pipe 502 is connected with the induced draft fan 503, and the inner wall of the heat recovery pipe 101 is coated with a polytetrafluoroethylene coating for corrosion prevention.

[0033] Through the design of connecting disc 201, recovery filter assembly 3, bearing ring 401 and hydraulic cylinder 4, the recovery filter assembly 3 can intercept impurities such as paint mist and particulate matter in the exhaust gas, which can effectively prevent the heat exchanger 5 from being blocked during heat recovery, reduce the trouble caused by subsequent disassembly and cleaning, and when the recovery filter assembly 3 needs to be disassembled or adjusted, the hydraulic cylinder 4 can control the bearing ring 401 to drive the recovery filter assembly 3 to ascend and descend, so that it can better cooperate with the connecting disc 201 and other components, ensure the stability and sealing of the whole device, thereby reducing the artificial disassembly strength and reducing the maintenance risk. When passing through the heat exchanger 5, the waste heat of the exhaust gas can be recovered for preheating fresh air or production water, reducing the heating energy consumption of the paint baking furnace, and the low-temperature exhaust gas after heat exchange is discharged through the exhaust pipe 502 through the induced draft fan 503. The sealing cover 2 can prevent the hot exhaust gas from leaking from the upper half, play a sealing role, ensure the flow of hot exhaust gas in the pipeline, reduce heat loss, and the polytetrafluoroethylene coating on the inner wall of the heat recovery pipe 101 can improve its service life and reduce damage to the pipeline during heat recovery, thereby solving the problems of easy blockage, difficult maintenance and large heat loss of the paint baking furnace heat recovery device.

[0034] The heat exchanger 5 is a mature technology and will not be described here

[0035] Example 2

[0036] The paint baking furnace heat recovery device provided in this embodiment, like Figures 4-5As shown, comprising: recovery filter assembly 3 includes dismounting pipe 301, dismounting pipe 301 is disassembled and mounted between two groups of connecting disc 201, connecting disc 201 and connecting disc 201 are attached to the surface and a plurality of corresponding matching thread grooves are opened, and the positioning bolt 302 is threadedly connected in the thread groove. Two groups of metal grating 305 are disassembled and mounted in the dismounting pipe 301, the outer surface of the metal grating 305 is fixedly installed with sliding block 307 at both ends, the inner wall of the dismounting pipe 301 is provided with sliding groove 304, the sliding groove 304 is provided with two groups of upper and lower symmetry, the sliding block 307 is slidingly installed in the sliding groove 304, the sliding block 307 is inserted with mounting bolt 306 at one end, and the mounting bolt 306 is inserted into the inner wall of the sliding groove 304 at the other end. The sealing ring 303 is bonded on one end of the surface of the dismounting pipe 301, the edge of the sealing ring 303 is chamfered to facilitate pressure deformation sealing, and the metal grating 305 is made of stainless steel.

[0037] Through the design of dismounting pipe 301, metal grating 305 and sliding groove 304, the metal grating 305 is installed in cooperation with the sliding groove 304 of the inner wall of the dismounting pipe 301 through the sliding block 307, and is fixed through the mounting bolt 306, so that the metal grating 305 is convenient to disassemble and replace, and the cleaning and maintenance thereof are facilitated, and the time consumed for cleaning and dismounting is reduced. When the hot waste gas enters the dismounting pipe 301 through the heat recovery pipe 101, the metal grating 305 installed on the inner wall of the dismounting pipe 301 can intercept and filter the impurities such as paint mist particles in the hot waste gas, so as to realize the separation of paint mist and hot waste gas, reduce the influence of paint mist on the subsequent heat recovery device, protect the heat exchanger 5 from being polluted and blocked by paint mist, maintain long-term high-efficiency heat transfer, and the edge of the sealing ring 303 is chamfered to fill the gap of the connecting part, further enhance the sealing effect, and prevent the hot waste gas from leaking from the connecting part of the dismounting pipe 301 and the connecting disc 201.

[0038] In summary, the heat recovery device of the paint baking oven provided by the embodiment has the following advantages: the problem of easy blockage and difficult maintenance of the heat recovery device of the paint baking oven during heat recovery is effectively solved, the time for cleaning and dismounting is effectively shortened, and the heat recovery efficiency in the later period is not affected.

[0039] In use, when the hot exhaust gas enters the dismounting pipe 301 through the heat recovery pipe 101, the metal grating 305 mounted on the inner wall of the dismounting pipe 301 can intercept and filter the impurities such as paint mist particles in the hot exhaust gas, so as to realize the separation of the paint mist and the hot exhaust gas, reduce the influence of the paint mist on the subsequent heat recovery device, protect the heat exchanger 5 from being polluted and blocked by the paint mist, and make the heat exchanger 5 maintain long-term high-efficiency heat transfer, and the sealing effect can be enhanced by the sealing cover 2 and the sealing ring 303 when the dismounting pipe 301 is installed, so as to prevent the heat loss, and the exhaust gas heat can be recovered for preheating fresh air or production water when passing through the heat exchanger 5, so as to reduce the heating energy consumption of the paint baking furnace, the low-temperature exhaust gas after heat exchange is discharged by the exhaust pipe 502 through the induced draft fan 503, then when the dismounting pipe 301 needs to be dismounted and cleaned, the positioning bolt 302 is dismounted, the dismounting pipe 301 is driven to ascend and descend by the bearing ring 401 controlled by the hydraulic cylinder 4, the metal grating 305 mounted in the dismounting pipe 301 is cleaned or replaced, since the metal grating 305 is mounted by cooperation of the sliding block 307 and the sliding groove 304 on the inner wall of the dismounting pipe 301 and is fixed by the mounting bolt 306, the dismounting in the later period can be completed without too complicated steps.

[0040] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application, and those skilled in the art should realize that any equivalent replacement and obvious change obtained by applying the content of the present application should be included in the protection scope of the present application.

Claims

1. A heat recovery device for a paint baking oven, characterized in that, include: A furnace body (1) is connected to a heat recovery pipe (101) at one end. A heat exchanger (5) is correspondingly provided at one end of the heat recovery pipe (101). A drain pipe (501) is connected to one end of the heat exchanger (5). A connecting plate (201) is fixedly installed on the outer circumferential edge of both the drain pipe (501) and the heat recovery pipe (101). A sealing cover (2) is fixedly installed on the upper half section between the two sets of connecting plates (201). A recovery filter assembly (3) is disassembled and installed between the two sets of connecting plates (201). The other end of the recovery filter assembly (3) is inserted into the sealing cover (2).

2. The heat recovery device for the paint baking oven according to claim 1, characterized in that, The lower end of the recycling filter assembly (3) is provided with a hydraulic cylinder (4), and the extended end of the hydraulic cylinder (4) is connected to a bearing ring (401). The inner wall of the bearing ring (401) is attached to the lower surface of the recycling filter assembly (3).

3. The heat recovery device for the paint baking oven according to claim 1, characterized in that, The heat exchanger (5) is connected to a discharge pipe (502) at one end, and a blower (503) is connected to the other end of the discharge pipe (502). The inner wall of the heat recovery pipe (101) is coated with a polytetrafluoroethylene coating for corrosion protection.

4. The heat recovery device for the paint baking oven according to claim 1, characterized in that, The recycling filter assembly (3) includes a disassembly tube (301), which is disassembled and installed between two sets of connecting discs (201). The connecting discs (201) and the contact surface of the connecting discs (201) are provided with multiple corresponding matching threaded grooves, and positioning bolts (302) are threadedly connected in the threaded grooves.

5. The heat recovery device for the paint baking oven according to claim 4, characterized in that, Two sets of metal grids (305) are disassembled and installed inside the disassembly tube (301). Slider blocks (307) are fixedly installed at both ends of the outer surface of the metal grids (305). A sliding groove (304) is opened on the inner wall of the disassembly tube (301). The sliding groove (304) has two sets of symmetrical sliding grooves. The sliders (307) are slidably installed in the sliding grooves (304). One end of the slider (307) is inserted with a mounting bolt (306), and the other end of the mounting bolt (306) is inserted into one end of the inner wall of the sliding groove (304).

6. The heat recovery device for the paint baking oven according to claim 5, characterized in that, The disassembly tube (301) has a sealing ring (303) bonded to one end of each of its two sides. The edge of the sealing ring (303) is chamfered to facilitate sealing under pressure deformation. The metal grid (305) is made of stainless steel.

Images