A fast and uniform heating type hot cleaning furnace

Abstract

The present invention discloses a fast and uniformly heated thermal cleaning furnace, comprising a furnace body, a combustion chamber, a heat distribution mechanism, a carrier and a burner, wherein the combustion chamber is arranged above the furnace body, the heat distribution mechanism is arranged on the inner wall of the furnace body, the carrier is arranged at the inner bottom of the furnace body, the heat distribution mechanism comprises a heat sink, the heat sink and the inner wall of the furnace body form a cavity, and a heat distribution box is arranged in the cavity, the heat distribution box comprises a heat preservation plate and a box body, the heat preservation plate is fitted with the heat sink, a plurality of conical holes are arranged on the heat preservation plate, the conical holes open outward, the box body is connected to the inner wall of the furnace body, the heat sink is also provided with an air vent, and the air vent is provided with a gas valve. The workpiece of the present invention is heated simultaneously in multiple directions and evenly, so that the polymer compound reacts fully and the cleaning effect is better; the air vent that can quickly dissipate heat is provided so that heat can quickly enter the heating chamber, shortening the heating time and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of heat cleaning furnaces, in particular to a heat cleaning furnace capable of rapid and uniform heating. Background Art

[0002] The hot cleaning furnace can efficiently and safely clean chemicals attached to metal parts such as coating nozzles. Taking advantage of the characteristics that high molecular polymers can be decomposed and oxidized when isolated from air above 300 degrees, and can be completely oxidized in a small amount of air above 400 degrees, the workpiece with high molecular contamination is first heated to 400 degrees (prepared according to process requirements) to melt a large amount of high molecular polymer on the workpiece and flow into the collection container at the bottom of the furnace. Then the furnace temperature is raised to 400 degrees and a small amount of fresh air is introduced to fully oxidize the remaining polymer. The generated carbon dioxide is sprayed with water and then pumped out of the furnace together with the water through a water ring. Existing hot cleaning furnaces will have The following problems exist: 1. Heating is fast but uneven, and the furnace temperature is difficult to adjust, which can easily lead to local overheating; 2. The molten polymer liquid drips directly onto the furnace floor, making it difficult to collect and clean; 3. Heating is uniform but too slow. For example, patent CN216114071U discloses a heat-cleaning furnace that can achieve rapid and uniform heat distribution. This furnace achieves uniform heating by disposing an annular combustion tube inside the furnace casing. Although the combustion tube heats quickly, the temperature is difficult to adjust, making overheating a possibility, leading to deformation and damage to the workpiece. Summary of the Invention

[0003] The object of the present invention is to provide a thermal cleaning furnace capable of rapid and uniform heating, so as to at least solve one of the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fast and uniformly heated hot cleaning furnace, comprising a furnace body, a combustion chamber, a heat distribution mechanism, a carrier and a burner, wherein the combustion chamber is arranged above the furnace body, the heat distribution mechanism is arranged on the inner wall of the furnace body, and the carrier is arranged at the inner bottom of the furnace body, the heat distribution mechanism includes a heat sink, the heat sink and the inner wall of the furnace body form a cavity, and a heat distribution box is arranged in the cavity, the heat distribution box includes an insulation plate and a box body, the insulation plate is fitted with the heat sink, a plurality of conical holes are arranged on the insulation plate, and the conical holes open outward, the box body is connected to the inner wall of the furnace body and communicates with the combustion chamber, an air outlet is also provided on the heat sink, and a gas valve is provided on the air outlet.

[0005] As a further optimization, the box body is connected to the cavity, and is used to connect the combustion chamber and the cavity, so that the heat in the combustion chamber enters the cavity, thereby performing heat regulation.

[0006] As a further optimization, the furnace body includes an outer steel plate layer and an inner thermal insulation layer. The outer steel plate layer strengthens the structural strength of the furnace body, and the inner thermal insulation layer plays a role in heat preservation, so that the temperature in the furnace is not easily lost, the heating effect is good, and it is also more energy-saving.

[0007] As a further optimization, the carrier includes a support frame connected to the bottom plate of the furnace body and a rail installed on the support frame. The support frame is located above the heat sink. The workpiece is placed on the rail trolley, and the rail trolley is pushed along the rail to move in and out of the furnace body. The support frame is located above the heat sink to prevent the rail trolley from scratching the components inside the furnace body.

[0008] As a further optimization, a spray head is also provided on the top of the furnace body for cleaning the product and discharging the carbon dioxide gas after the reaction.

[0009] As a further optimization, a collecting assembly is further included, which is arranged between the track and the heat sink on the bottom plate. The collecting assembly includes a first arc tube and a second arc tube, and the first arc tube and the second arc tube are installed in an alternating buckling manner.

[0010] As a further optimization, the first arc tube includes an arc shell, a support frame and a limiting ball. The two ends of the support frame are fixedly connected to the inner wall of the arc shell, and the two ends are set to bend and tilt upward. Limiting balls are set at the connection between the bending parts at both ends and the middle section. The two sides of the second arc tube 712 are clamped between the support frame and the limiting ball 713. When the polymer melts or the sprinkler head sprays water, the liquid drips into the arc groove of the first arc tube 711 or the outer arc surface of the second arc tube 712, and then flows into the arc groove of the first arc tube 711, thereby collecting liquid or waterproofing.

[0011] As a further optimization, a water outlet is provided at one end of the first arc tube, and the first arc tube is arranged in an inclined state, with one end of the first arc tube close to the water outlet being lower than the other end for rapid liquid drainage.

[0012] As a further optimization, the opening of the second arc-shaped tube faces the bottom of the furnace body, and the two side edges are respectively arranged on the supporting frame bending sections of the two first arc-shaped tubes and abut against the limiting balls.

[0013] As a further optimization, the tuyere includes a first tuyere at the top of the furnace body and a second tuyere below the side wall. The opening direction of the second tuyere is inclined downward to prevent water from flowing into the heat distribution box 32 from the tuyere.

[0014] Beneficial effects

[0015] The beneficial effects of the present invention are:

[0016] 1. By setting up heat dissipation structures on the top, bottom and side walls of the furnace, the workpiece can be heated simultaneously in multiple directions, heated evenly, and the polymer compound can be fully reacted, resulting in better cleaning effect;

[0017] 2. While setting up multiple heat dissipation structures, air vents that can quickly dissipate heat are set up, so that heat quickly enters the heating chamber, shortening the heating time and improving work efficiency;

[0018] 3. A collecting assembly is provided to collect the polymer melt in the first arc tube, thereby preventing the polymer melt from dripping onto the bottom plate and damaging the equipment, making it difficult to clean, while also protecting the heat dissipation components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 Schematic diagram of the internal structure of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the box body 322 of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the first arc tube of the present invention.

[0023] Reference numerals

[0024] Furnace body 1, steel plate layer 11, thermal insulation layer 12, spray head 13;

[0025] Combustion chamber 2;

[0026] Heat distribution mechanism 3, heat sink 31, heat distribution box 32, insulation board 321, box body 322, air outlet 33, second air outlet 331;

[0027] Carrier 4, support frame 41, track 42;

[0028] Burner 5;

[0029] Chimney 6;

[0030] Collecting assembly 7, first arc-shaped tube 71, arc-shaped shell 711, support frame 712, limiting ball 713, water outlet 714, second arc-shaped tube 72. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 A hot cleaning furnace that can heat quickly and evenly includes a furnace body 1, a combustion chamber 2, a heat distribution mechanism 3, a carrier 4, a burner 5 and a chimney 6. The combustion chamber 2 is arranged above the furnace body 1, and the chimney 6 is connected to the exhaust gas outlet of the combustion chamber 2 for exhausting smoke. Of course, the chimney 3 can be connected to an external exhaust gas treatment equipment to achieve the function of exhaust gas purification. The heat distribution mechanism 3 is arranged on the inner wall of the furnace body, and the carrier 4 is arranged at the bottom of the furnace body 1 for loading products to be operated.

[0033] Specifically, refer to Figure 2 In this embodiment, the heat distribution mechanism 3 includes a heat sink 31, the heat sink 31 and the inner wall of the furnace body 1 form a cavity, and a heat distribution box 32 is provided in the cavity, the heat distribution box 32 is used to regulate the heat in the cavity entering the heating chamber in the furnace body 1, the heat distribution box 32 includes a thermal insulation plate 321 and a box 322, the thermal insulation plate 321 is fitted with the heat sink 31, and a plurality of tapered holes are provided on the thermal insulation plate 321, the tapered holes opening outward, so that the temperature of the heat dissipated to the heat sink 31 is more uniform, avoiding local overheating. The box 322 is connected to the inner wall of the furnace body 1, communicated with the combustion chamber 2, and the box 322 is communicated with the cavity.

[0034] It is understandable that when the heat cleaning furnace just starts to work and the temperature inside the furnace is low, in order to save time, it is necessary to quickly raise the temperature inside the furnace to the predetermined heating temperature in a short time. Therefore, an air vent 33 is also provided on the heat sink 31, and a gas valve is provided on the air vent 33. When the gas valve is opened, heat enters the heating chamber directly from the air vent 33. At this time, the temperature inside the furnace rises rapidly. When the predetermined temperature is reached, the gas valve is closed.

[0035] In this embodiment, referring to Figure 2 The furnace body 1 includes an outer steel plate layer 11 and an inner thermal insulation layer 12. The outer steel plate layer 12 strengthens the structural strength of the furnace body 1, and the inner thermal insulation layer 11 plays a role in heat preservation, so that the temperature in the furnace is not easy to lose, the heating effect is good, and it is also more energy-saving.

[0036] Reference Figure 1In order to facilitate the workpiece heated in the furnace to enter the furnace body 1, the carrier 4 designed in this embodiment includes a support frame 41 connected to the bottom plate of the furnace body 1 and a track 42 installed on the support frame. The workpiece is placed on the track trolley, and the track trolley is pushed along the track 42 to move in and out of the furnace body 1. The support frame 41 is located above the heat sink 31 to prevent the track trolley from scratching the parts in the furnace body 1.

[0037] In this embodiment, referring to Figure 2 and Figure 3 When the furnace temperature rises to 400 degrees and a small amount of fresh air is introduced to fully oxidize the remaining polymer, the generated carbon dioxide is sprayed with water and then sucked out of the furnace together with the water through a water ring. Therefore, a spray head 13 is provided on the top of the furnace body 1 to clean the product and discharge the carbon dioxide gas after the reaction.

[0038] It can be understood that in order to achieve the effect of uniform heating, a heat distribution box 32 component is also provided at the bottom of the furnace body 1. When the spray head 13 sprays water, in order to collect the high molecular polymer melt and prevent water from entering the heat distribution box 32, the hot cleaning furnace that can be quickly and evenly heated also includes a collecting component 7. The collecting component 7 is arranged between the track and the heat sink 31 on the bottom plate, which does not affect the workpiece entering and exiting the furnace body 1 and can also protect the heat distribution box 32 components. Specifically, referring to Figures and Figures, the collecting component 7 includes a first arc tube 71 and a second arc tube 72. The first arc tube 71 and the second arc tube 72 are alternately buckled and installed. The opening of the first arc tube 71 faces the top of the furnace body 1, and the opening of the second arc tube 72 faces the bottom of the furnace body 1. The first arc tube 71 includes an arc The arc-shaped shell 711, the support frame 712 and the limiting ball 713, the two ends of the support frame 712 are fixedly connected to the inner wall of the arc-shaped shell 711, and the two ends are set to be bent and inclined upward, and the limiting balls 713 are set at the connection between the bent parts at both ends and the middle section. The two side edges of the second arc tube 712 are respectively set on the curved sections of the support frames of the two first arc tubes 711, and rest on the limiting balls 713. It can be understood that the two side edges of the second arc tube 712 are clamped between the support frame and the limiting balls 713. When the polymer melts or the sprinkler head sprays water, the liquid drips into the arc groove of the first arc tube 711 or the outer arc surface of the second arc tube 712, and then flows into the arc groove of the first arc tube 711, thereby collecting liquid or waterproofing.

[0039] It can be understood that when the bottom of the furnace body 1 transfers heat to the heat sink, since the two side walls of the second arc tube 712 abut against the support frame, a flow channel is formed between the first arc tube 711 and the second arc tube 712, and heat enters the heating chamber from the flow channel between the first arc tube 711 and the second arc tube 712, thereby heating the workpiece at the bottom and making the heating more uniform.

[0040] In this embodiment, referring to Figure 4In order to drain the accumulated water in the arc groove of the first arc tube 711 in time, a water outlet 714 is provided at one end of the first arc tube 711. When installed, the first arc tube 711 is set in an inclined state. The end of the first arc tube 711 close to the water outlet is lower than the end slope and the other end, which plays a role in rapid drainage.

[0041] In this embodiment, the air vents 33 include a first air vent at the top of the furnace body 1 and a second air vent 331 below the side wall. It can be understood that when the sprinkler head sprays water, in order to prevent water from flowing into the air vents 33, the opening direction of the second air vents 331 is tilted downward, which can prevent water from flowing into the heat distribution box 32 from the air vents.

[0042] It is understandable that in order to control the heating process and adjust the temperature, the heat cleaning furnace is also equipped with temperature sensors, temperature control equipment and other auxiliary equipment.

[0043] The working process of this fast and uniform heating hot cleaning furnace is as follows: put the workpiece to be heated in the carriage of the rail trolley, push the rail trolley to move along the track, enter and exit the furnace body 1, and close the furnace door; start the burner, and the heat generated in the combustion chamber enters the cavity through the box body 322. In order to save heating time, open the gas valve, and most of the heat enters the heating chamber directly from the air vent. At this time, the temperature in the furnace rises rapidly. When it reaches the predetermined temperature, close the gas valve; the heat is conducted from the tapered holes in the insulation plate 321 to the heat dissipation plate, and the heat dissipation plates around the workpiece evenly dissipate the heat into the heating chamber, which is beneficial to the workpiece. The workpiece is heated evenly and fully. First, the workpiece with high molecular weight contamination is heated to 10000℃ (prepared according to the process requirements) so that a large amount of high molecular weight polymer on the workpiece melts and flows to the lower part of the furnace, where the liquid drips into the arc groove of the first arc tube 711 or the outer arc surface of the second arc tube 712, and then flows into the arc groove of the first arc tube 711. Then, the furnace temperature is raised to 10000℃ and a small amount of fresh air is introduced to fully oxidize the remaining polymer. The generated carbon dioxide is sprayed with water and then extracted by a water ring and discharged out of the furnace together with the water. After the operation is completed, wait for the furnace temperature to cool down and take out the workpiece.

[0044] Specific embodiments are used in the present invention to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A fast and uniformly heated hot cleaning furnace, comprising a furnace body (1), a combustion chamber (2), a heat distribution mechanism (3), a carrier (4) and a burner (5), wherein the combustion chamber (2) is arranged above the furnace body, the heat distribution mechanism (3) is arranged on the inner wall of the furnace body (1), and the carrier (4) is arranged at the bottom of the furnace body (1), characterized in that: The heat distribution mechanism (3) includes a heat sink (31), the heat sink (31) and the inner wall of the furnace body (1) form a cavity, and a heat distribution box (32) is provided in the cavity, the heat distribution box (32) includes a heat preservation plate (321) and a box (322), the heat preservation plate (321) and the heat sink (31) are fitted together, a plurality of tapered holes (323) are provided on the heat preservation plate (321), and the tapered holes (323) open outward, the box (322) is connected to the inner wall of the furnace body (1) and communicates with the combustion chamber (2), the heat sink (31) is also provided with an air outlet (33), and a gas valve is provided on the air outlet (33); The carrier (4) comprises a support frame (41) connected to the bottom plate of the furnace body (1) and a rail (42) mounted on the support frame (41), wherein the support frame (41) is located above the heat sink (31); The invention also includes a collecting assembly (7), which is arranged between the track (42) and the heat sink on the bottom plate. The collecting assembly (7) includes a first arc-shaped tube (71) and a second arc-shaped tube (72), and the first arc-shaped tube (71) and the second arc-shaped tube (72) are alternately buckled and installed.

2. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: The box (322) is in communication with the cavity.

3. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: The furnace body (1) comprises an outer steel plate layer (11) and an inner thermal insulation layer (12).

4. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: A spray head (13) is also provided on the top of the furnace body (1) for cleaning products.

5. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: The first arc-shaped tube (71) comprises an arc-shaped shell (711), a support frame (712) and a limiting ball (713); both ends of the support frame (712) are fixedly connected to the inner wall of the arc-shaped shell (711), and both ends are arranged to bend and tilt upward; and the limiting ball (713) is provided at the connection between the bending parts at both ends and the middle section.

6. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: One end of the first arc tube (71) is provided with a water outlet (714), and the first arc tube (71) is arranged in an inclined state, with one end of the first arc tube (71) close to the water outlet (714) being lower than the other end, for rapid drainage.

7. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: The opening of the second arc-shaped tube (72) faces the bottom of the furnace body (1), and the two side edges are respectively arranged on the curved sections of the support frames (712) of the two first arc-shaped tubes (71) and abut against the limiting balls (713).

8. The fast and uniform heating type thermal cleaning furnace according to claim 1, characterized in that: The tuyere (33) comprises a first tuyere at the top of the furnace body (1) and a second tuyere (331) below the side wall, wherein the opening direction of the second tuyere is inclined downward.

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