Rosin catalytic cracking device

Abstract

The utility model discloses a rosin catalytic cracking device which comprises a barrel, a heating mechanism and a catalyzing mechanism, the heating mechanism comprises a heating body, a plurality of fins and a lower cover, the heating body is fixed on the lower cover in a penetrating manner, the fins are fixedly connected with the lower cover through positioning columns, and the lower cover is detachably connected with a bottom port of the barrel; the catalysis mechanism comprises a catalysis cylinder and an upper cover, the catalysis cylinder is fixedly connected with the upper cover, the upper cover is detachably connected with a top port of the cylinder body, the catalysis cylinder is filled with a catalyst, an air outlet is formed in the upper cover, a plurality of first small holes are formed in the bottom and the side portion of the catalysis cylinder, and a gap is reserved between the outer side wall of the catalysis cylinder and the inner side wall of the cylinder body; an air inlet is formed close to the bottom of the barrel. According to the utility model, the heating mechanism and the catalyzing mechanism adopt modular design, so that the heating mechanism and the catalyzing mechanism can be conveniently detached from the barrel body to be replaced and maintained, heated waste gas can enter the catalyzing barrel from the first small holes in the bottom and the side part of the catalyzing barrel to be in contact with a catalyst, and the gas flow resistance is small.

Description

Technical Field

[0001] The utility model relates to the technical field of reflow soldering waste gas treatment devices, in particular to a rosin catalytic cracking device. Background Art

[0002] Reflow soldering waste gas contains rosin components. A catalytic device will be set at the waste gas discharge end to promote the cracking of rosin in the waste gas and carry out harmless treatment. The existing rosin catalytic cracking device includes a heating mechanism, a catalytic mechanism, and a cylinder with sealed ends. After the waste gas is introduced into the cylinder, it is heated by the heating mechanism and then cracked by the catalytic mechanism.

[0003] The disadvantage of the existing rosin catalytic cracking device is that the heating mechanism, the catalytic mechanism and the cylinder are an integrated structure. Specifically, a partition is fixedly arranged horizontally in the middle of the cylinder to divide the inside of the cylinder into a heating cavity and a catalytic cavity. The heating element is fixed in the bottom heating cavity to form a heating mechanism, and the catalyst is filled in the upper catalytic cavity to form a catalytic mechanism. The replacement and maintenance of the heating mechanism and the catalytic mechanism are inconvenient. In particular, when replacing the catalyst in the catalytic mechanism, the operator needs to stand at a high place and slowly take out the waste catalyst from the air outlet, which is inconvenient to operate and also poses a safety hazard.

[0004] In the existing rosin catalytic cracking device, the exhaust gas can only enter the catalytic cavity and contact the catalyst through a number of small holes arranged on the partition plate, and the gas flow resistance is relatively large. Utility Model Content

[0005] The utility model aims to provide a rosin catalytic cracking device.

[0006] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] A rosin catalytic cracking device comprises a cylinder, a heating mechanism, and a catalytic mechanism, wherein the heating mechanism comprises a heating element, a plurality of fins, and a lower cover, wherein the heating element is fixedly arranged on the lower cover, the fins are fixedly connected to the lower cover via positioning columns, and the lower cover is detachably connected to a bottom port of the cylinder;

[0008] The catalytic mechanism comprises a catalytic cylinder and an upper cover, wherein the catalytic cylinder is fixedly connected to the upper cover, and the upper cover is detachably connected to the top port of the cylinder body, the catalytic cylinder is filled with a catalyst, an air outlet is provided on the upper cover, a plurality of first small holes are provided on the bottom and side of the catalytic cylinder, and a gap is left between the outer wall of the catalytic cylinder and the inner wall of the cylinder body;

[0009] The cylinder is provided with an air inlet near the bottom.

[0010] As a further improved technical solution of the utility model, the air outlet is connected to a fan through a pipeline.

[0011] As a further improved technical solution of the utility model, a temperature sensor is also provided on the cylinder, and the temperature sensor is located between the heating mechanism and the catalytic mechanism.

[0012] As a further improved technical solution of the utility model, the fins of the heating mechanism are flat discs, the fins are arranged horizontally at intervals, and the diameter of the fins is slightly smaller than the inner diameter of the cylinder.

[0013] As a further improved technical solution of the utility model, the fins of the heating mechanism are flat discs, the fins are arranged horizontally at intervals, and a plurality of second small holes are provided on the fins.

[0014] As a further improved technical solution of the utility model, a first high temperature resistant seal is provided at the connection between the lower cover and the cylinder body, and a second high temperature resistant seal is provided at the connection between the upper cover and the cylinder body.

[0015] As a further improved technical solution of the utility model, a third high temperature resistant sealing member is provided at the connection between the pipeline and the air outlet.

[0016] Compared with the prior art, the technical effects of the utility model are:

[0017] The heating mechanism and catalytic mechanism of the utility model adopt a modular design and can be conveniently removed from the cylinder for replacement and maintenance operations. Especially when replacing the catalyst in the catalytic mechanism, the catalyst can be poured out by simply removing the catalytic mechanism and laying it down. The operator does not need to stand at a height for a long time to work, which is safer and more convenient.

[0018] The exhaust gas heated by the heating mechanism can enter the catalytic tube through the first small holes at the bottom and side of the catalytic tube to contact the catalyst, and the gas flow resistance is relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a rosin catalytic cracking device (not connected to a fan) in an embodiment of the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of a rosin catalytic cracking device in an embodiment of the utility model;

[0021] Figure 3 yes Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 4 yes Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the heating mechanism in the embodiment of the utility model;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the catalytic mechanism in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0026] See also Figures 1 to 6 A rosin catalytic cracking device comprises a cylinder 1, a heating mechanism, and a catalytic mechanism. The heating mechanism comprises a heating element 21, a plurality of fins 22, and a lower cover 23. The heating element 21 is fixed on the lower cover 23. The fins 22 are fixedly connected to the lower cover 23 through positioning columns 24. The lower cover 23 is detachably connected to the bottom port of the cylinder 1.

[0027] The catalytic mechanism comprises a catalytic cylinder 31 and an upper cover 32. The catalytic cylinder 31 is fixedly connected to the upper cover 32. The upper cover 32 is detachably connected to the top port of the cylinder 1. The catalytic cylinder 31 is filled with a catalyst (not shown). The upper cover 32 is provided with an air outlet 4. The bottom and side of the catalytic cylinder 31 are provided with a plurality of first small holes 33. A gap is left between the outer wall of the catalytic cylinder 31 and the inner wall of the cylinder 1.

[0028] The cylinder 1 is provided with an air inlet 5 near the bottom.

[0029] It should be noted that the detachable connection between the lower cover 23 and the bottom port of the cylinder 1, and the upper cover 32 and the top port of the cylinder 1 are realized by existing structures, such as bolt fixing structures or snap fixing structures. When replacement or maintenance operations are required, the heating mechanism and the catalytic mechanism can be removed from the cylinder 1.

[0030] The lower end of the heating element 21 passes through the lower cover 23 and is exposed outside the cylinder 1 for connecting to a power source.

[0031] The fins 22 are in contact with the heating element 21 to increase the heat dissipation area of ​​the heating element 21 and improve the heating efficiency of the exhaust gas.

[0032] The catalyst filled in the catalyst cartridge 31 is preferably zeolite.

[0033] Furthermore, in the present embodiment, the air outlet 4 is connected to a fan 6 via a pipeline 7 , and the fan 6 provides suction to provide power for the exhaust gas to move from the air inlet 5 to the air outlet 4 .

[0034] Of course, in other embodiments, the fan 6 may also be disposed at the end of the air inlet 5 , and the fan 6 provides power for the exhaust gas to move forward by blowing air.

[0035] The fan 6 is preferably a centrifugal fan, and the pipeline 7 is preferably a bellows.

[0036] Furthermore, a temperature sensor 8 is also provided on the cylinder 1, and the temperature sensor 8 is located between the heating mechanism and the catalytic mechanism.

[0037] The temperature sensor 8 is used to monitor the temperature of the exhaust gas after being heated by the heating mechanism. The temperature sensor 8 is preferably a K-type thermocouple.

[0038] Furthermore, in the present embodiment, the fins 22 of the heating mechanism are flat discs, the fins 22 are arranged horizontally at intervals, and the diameter of the fins 22 is slightly smaller than the inner diameter of the cylinder 1 .

[0039] The flat disc-shaped fins 22 can effectively utilize the space inside the cylinder 1 and ensure the distribution area of ​​the fins 22 inside the cylinder 1. The fins 22 are arranged horizontally, in the same direction as the exhaust gas introduced by the air inlet 5, to avoid blocking the air inlet 5 and reduce the exhaust gas travel resistance. The diameter of the fins 22 is slightly smaller than the inner diameter of the cylinder 1, and the exhaust gas can flow between the fins 22 layers through the gap between the fins 22 and the inner wall of the cylinder 1, and fully contact and exchange heat with each fin 22.

[0040] In other embodiments, the fins 22 of the heating mechanism are flat discs, the fins 22 are horizontally spaced apart, and a plurality of second small holes (not shown) are provided on the fins 22. The exhaust gas can flow between the layers of the fins 22 through the second small holes evenly distributed on the fins 22, and fully contact and exchange heat with each fin 22.

[0041] Furthermore, a first high temperature resistant seal 9 is provided at the connection between the lower cover 23 and the cylinder body 1 , and a second high temperature resistant seal 10 is provided at the connection between the upper cover 32 and the cylinder body 1 .

[0042] Furthermore, a third high temperature resistant seal 11 is provided at the connection between the pipeline 7 and the air outlet 4 .

[0043] When the utility model is used, the fan 6 provides suction power to introduce the exhaust gas into the cylinder 1 through the air inlet 5. The exhaust gas entering the cylinder 1 is heated by contact with the heating element 21 and the fins 22. The heated exhaust gas enters the catalytic cylinder 31 through the first small hole 33 on the catalytic cylinder 31. The high-temperature exhaust gas entering the catalytic cylinder 31 contacts with the zeolite to undergo a cracking reaction, and is finally discharged from the cylinder 1 through the air outlet 4.

[0044] Compared with the prior art, the technical effects of the utility model are:

[0045] The heating mechanism and catalytic mechanism of the utility model adopt a modular design and can be conveniently removed from the cylinder 1 for replacement and maintenance operations. Especially when replacing the catalyst in the catalytic mechanism, it is only necessary to remove the catalytic mechanism and lay it down to pour out the catalyst. The operator does not need to stand at a height for a long time to work, which is safer and more convenient.

[0046] The exhaust gas heated by the heating mechanism can enter the catalytic tube 31 through the first small holes 33 at the bottom and side of the catalytic tube 31 to contact the catalyst, and the gas flow resistance is relatively small.

[0047] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the utility model.

Claims

1. A rosin catalytic cracking device, comprising a cylinder, a heating mechanism, and a catalytic mechanism, characterized in that: The heating mechanism comprises a heating element, a plurality of fins, and a lower cover, wherein the heating element is fixed to the lower cover, the fins are fixedly connected to the lower cover via positioning columns, and the lower cover is detachably connected to the bottom port of the cylinder; The catalytic mechanism comprises a catalytic cylinder and an upper cover, wherein the catalytic cylinder is fixedly connected to the upper cover, and the upper cover is detachably connected to the top port of the cylinder body, the catalytic cylinder is filled with a catalyst, an air outlet is provided on the upper cover, a plurality of first small holes are provided on the bottom and side of the catalytic cylinder, and a gap is left between the outer wall of the catalytic cylinder and the inner wall of the cylinder body; The cylinder is provided with an air inlet near the bottom.

2. The rosin catalytic cracking device according to claim 1, characterized in that: The air outlet is connected with a fan through a pipeline.

3. The rosin catalytic cracking device according to claim 1, characterized in that: The cylinder is also provided with a temperature sensor, and the temperature sensor is located between the heating mechanism and the catalytic mechanism.

4. The rosin catalytic cracking device according to claim 1, characterized in that: The fins of the heating mechanism are flat discs, the fins are arranged horizontally at intervals, and the diameter of the fins is slightly smaller than the inner diameter of the cylinder.

5. The rosin catalytic cracking device according to claim 1, characterized in that: The fins of the heating mechanism are flat discs, the fins are arranged horizontally at intervals, and a plurality of second small holes are arranged on the fins.

6. The rosin catalytic cracking device according to claim 1, characterized in that: A first high temperature resistant seal is provided at the connection between the lower cover and the cylinder, and a second high temperature resistant seal is provided at the connection between the upper cover and the cylinder.

7. The rosin catalytic cracking device according to claim 2, characterized in that: A third high temperature resistant sealing member is provided at the connection between the pipeline and the air outlet.

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