Absorbing and filtering device for crystal-containing tail gas of vacuum heat treatment atmosphere furnace

Abstract

The utility model discloses an absorbing and filtering device for crystal-containing tail gas of a vacuum heat treatment atmosphere furnace. The absorbing and filtering device comprises a tank body, a first opening formed in the top end of the tank body, a second opening formed in the bottom end of the tank body, a first cover body detachably covering the first opening, a second cover body detachably covering the second opening, and a first partition plate fixedly arranged in the tank body; the first partition plate is fixedly arranged in the tank body, the second partition plate is fixedly arranged in the tank body and located above the first partition plate, the third partition plate is detachably arranged in the tank body and located above the second partition plate, and the first partition plate, the second partition plate and the third partition plate divide the interior of the tank body into a first cavity, a second cavity, a third cavity and a fourth cavity which are mutually sealed and isolated. The first cavity, the second cavity, the third cavity and the fourth cavity are arranged from bottom to top, a plurality of finned tubes communicated with the first cavity and the third cavity are arranged in the second cavity, and the finned tubes are arranged on the peripheries of the first partition plate and the second partition plate.

Description

Technical Field

[0001] The utility model relates to the field of industrial vacuum heat treatment furnaces, and more specifically to an absorption and filtering device for crystalline tail gas of a vacuum heat treatment atmosphere furnace. Background Art

[0002] When the existing atmosphere furnace is in use, a filter needs to be added due to the large amount of tail gas crystallization. However, the pipeline is prone to accumulate crystal dust and needs to be cleaned. Excessive accumulation can easily clog the exhaust pipe. At the same time, the crystal dust will wear the valve or the crystal band will corrode the valve.

[0003] When the atmosphere furnace needs to be vacuum-resistant, the crystallization filtration device itself needs to be vacuum-resistant. At the same time, the filtration needs to be clean to prevent crystallization dust from accumulating in the exhaust valve, causing valve wear and corrosion, and leading to vacuum leakage in the vacuum furnace. Therefore, there is an urgent need for an absorption and filtration device for atmosphere furnace tail gas containing crystallization that can filter crystals and is easy to clean. Utility Model Content

[0004] The utility model aims at the above defects of the prior art and provides an absorption and filtering device for crystalline tail gas in a vacuum heat treatment atmosphere furnace.

[0005] The utility model solves the technical problem by adopting the following technical scheme: constructing an absorption and filtering device for crystallization tail gas in a vacuum heat treatment atmosphere furnace, the absorption and filtering device comprising a tank body, a first opening arranged at the top end of the tank body, a second opening arranged at the bottom end of the tank body, a first cover body detachably covered on the first opening, a second cover body detachably covered on the second opening, a first partition plate fixedly arranged in the tank body, a second partition plate fixedly arranged in the tank body and located above the first partition plate, and a third partition plate detachably arranged in the tank body and located above the second partition plate, wherein the first partition plate, the second partition plate and the third partition plate separate the interior of the tank body into a first chamber, a second chamber, a third chamber and a fourth chamber which are sealed and isolated from each other, and the first chamber, the second chamber, the third chamber and the fourth chamber are arranged from bottom to top;

[0006] The second chamber is provided with a plurality of fin tubes communicating with the first chamber and the third chamber, the plurality of fin tubes are arranged at the periphery of the first partition plate and the second partition plate, a filter element is arranged between the second partition plate and the third partition plate, a communication port communicating with the third chamber and the fourth chamber is arranged in the middle of the third partition plate, and the filter element is arranged around the communication port;

[0007] An air inlet connected to the first chamber is provided on the bottom side wall of the tank body, an air outlet connected to the fourth chamber is provided on the top side wall of the tank body, a vacuum valve is provided on the air outlet, and a water inlet and outlet connected to the second chamber are also provided on the side wall of the tank body.

[0008] In the absorption and filtering device for crystalline tail gas in a vacuum heat treatment atmosphere furnace described in the utility model, the periphery of the first partition is provided with a first air hole connected to the bottom end of the fin tube, and the periphery of the second partition is provided with a second air hole connected to the top end of the fin tube.

[0009] In the absorption and filtering device for the crystallization tail gas in the vacuum heat treatment atmosphere furnace of the utility model, the filter element is arranged between the second air hole and the communication port.

[0010] In the absorption and filtering device for crystalline tail gas in a vacuum heat treatment atmosphere furnace described in the utility model, a first connecting ring is fixedly provided at the periphery of the top end of the tank body, the first cover body is covered on the first connecting ring, and the periphery of the first connecting ring and the periphery of the first cover body are fixedly connected by a first quick-release caliper.

[0011] In the absorption and filtering device for crystalline tail gas in a vacuum heat treatment atmosphere furnace described in the utility model, a first annular groove is provided at a position corresponding to the first connecting ring on the bottom surface of the first cover body, and a first sealing ring is provided in the first annular groove which can seal and abut against the top surface of the first connecting ring.

[0012] In the absorption and filtering device for crystallized tail gas in a vacuum heat treatment atmosphere furnace described in the utility model, a second connecting ring is fixedly provided at the periphery of the bottom end of the tank body, the second cover body is covered on the second connecting ring, and the periphery of the second connecting ring and the periphery of the second cover body are fixedly connected by a second quick-release caliper.

[0013] In the absorption and filtering device for crystalline tail gas in a vacuum heat treatment atmosphere furnace described in the utility model, a second annular groove is provided at a position corresponding to the second connecting ring on the top surface of the second cover body, and a second sealing ring is padded in the second annular groove which can seal and abut against the bottom surface of the second connecting ring.

[0014] In the absorption and filtering device for the crystallization tail gas in the vacuum heat treatment atmosphere furnace of the utility model, the third partition plate is placed on the filter element and abuts against the filter element;

[0015] Alternatively, a stopper for the third partition to prevent movement is provided on the inner wall of the tank body, and when the third partition is placed on the stopper, the bottom surface of the third partition abuts against the top end of the filter element.

[0016] The implementation of the vacuum heat treatment atmosphere furnace containing crystallized tail gas absorption and filtration device of the utility model has the following beneficial effects: when using the vacuum heat treatment atmosphere furnace containing crystallized tail gas absorption and filtration device of the utility model, the air inlet of the filtration device is connected to the exhaust pipe of the atmosphere furnace, and the cooling water is connected to the water inlet. The tail gas enters the first chamber through the air inlet and then enters the fin tube. The gas entering the fin tube is cooled by the cooling water and crystallizes. The crystals flow to the third chamber with the gas and are absorbed by the filter element. Finally, only the tail gas enters the fourth chamber and is discharged through the vacuum valve and the air outlet. When it is necessary to clean the filter element, the first cover body can be removed from the first opening, the third partition can be taken out, and then the filter element can be taken out from the tank body for cleaning or replacement to prevent the crystals from entering the vacuum valve after accumulation and causing valve damage. Furthermore, the second cover body can also be removed from the second opening to clean the first chamber and the inside of the fin tube at the bottom of the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 The utility model is a schematic structural diagram of an absorption and filtering device for crystalline tail gas contained in a vacuum heat treatment atmosphere furnace. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, in the first embodiment of the absorption and filtering device for crystalline tail gas in a vacuum heat treatment atmosphere furnace of the utility model, the absorption and filtering device 10 includes a tank body 11, a first opening 12 arranged at the top of the tank body 11, a second opening 13 arranged at the bottom of the tank body 11, a first cover body 14 detachably covered on the first opening 12, a second cover body 15 detachably covered on the second opening 13, a first partition plate 16 fixedly arranged in the tank body 11, a second partition plate 17 fixedly arranged in the tank body 11 and located above the first partition plate 16, and a third partition plate 18 detachably arranged in the tank body 11 and located above the second partition plate 17. The first partition plate 16, the second partition plate 17 and the third partition plate 18 divide the interior of the tank body 11 into a first chamber 19, a second chamber 20, a third chamber 21 and a fourth chamber 22 which are sealed and isolated from each other, and the first chamber 19, the second chamber 20, the third chamber 21 and the fourth chamber 22 are arranged from bottom to top.

[0021] The second chamber 20 is provided with a plurality of fin tubes 23 connecting the first chamber 19 and the third chamber 21. The plurality of fin tubes 23 are arranged on the periphery of the first partition plate 16 and the second partition plate 17. A filter element 24 is provided between the second partition plate 17 and the third partition plate 18. A connecting port 25 connecting the third chamber 21 and the fourth chamber 22 is provided in the middle of the third partition plate 18. The filter element 24 is arranged around the connecting port 25.

[0022] An air inlet 26 communicating with the first chamber 19 is provided on the bottom side wall of the tank body 11, an air outlet 27 communicating with the fourth chamber 22 is provided on the top side wall of the tank body 11, a vacuum valve 28 is provided on the air outlet 27, and a water inlet 29 and a water outlet 30 communicating with the second chamber 20 are also provided on the side wall of the tank body 11.

[0023] When using the vacuum heat treatment atmosphere furnace containing crystallized tail gas absorption and filtering device of the utility model, the air inlet 26 of the filtering device 10 is connected to the exhaust pipe of the atmosphere furnace, and the cooling water is connected to the water inlet 29. The tail gas enters the first chamber 19 through the air inlet 26 and then enters the fin tube 23. The gas entering the fin tube 23 is cooled by the cooling water and crystallized. The crystals flow to the third chamber 21 with the gas and are absorbed by the filter element 24. Finally, only the tail gas enters the fourth chamber 22 and is discharged through the vacuum valve 28 and the air outlet 27. When it is necessary to clean the filter element 24, the first cover 14 can be removed from the first opening 12, the third partition 18 can be taken out, and then the filter element 24 can be taken out from the tank body 11 for cleaning or replacement to prevent the crystals from entering the vacuum valve 28 after accumulation and causing valve damage. Further, the second cover 15 can also be removed from the second opening 13 to clean the first chamber 19 and the inside of the fin tube 23 at the bottom of the tank body 11.

[0024] Specifically, a first air hole communicating with the bottom end of the fin tube 23 is provided on the periphery of the first partition plate 16 , and a second air hole communicating with the top end of the fin tube 23 is provided on the periphery of the second partition plate 17 .

[0025] Both ends of the fin tube 23 are connected to the first air hole and the second air hole respectively.

[0026] Preferably, the filter element 24 is disposed between the second air hole and the communication port 25 .

[0027] After the gas enters the third chamber 21 from the second air hole, it must be filtered by the filter element 24 before entering the fourth chamber 22 from the connecting port 25 .

[0028] In this embodiment, a first connecting ring 31 is fixedly disposed on the periphery of the top end of the tank body 11 , the first cover body 14 is covered on the first connecting ring 31 , and the periphery of the first connecting ring 31 and the periphery of the first cover body 14 are fixedly connected via a first quick-release caliper 33 .

[0029] When the first cover body 14 needs to be disassembled, the first quick-release caliper 33 can be removed, and then the first cover body 14 can be removed from the first connecting ring 31 .

[0030] Similarly, a first annular groove is provided on the bottom surface of the first cover body 14 at a position corresponding to the first connecting ring 31 , and a first sealing ring 35 is provided in the first annular groove for sealingly contacting the top surface of the first connecting ring 31 .

[0031] A second connecting ring 32 is fixedly disposed on the periphery of the bottom end of the tank body 11 , and the second cover body 15 is covered on the second connecting ring 32 . The periphery of the second connecting ring 32 and the periphery of the second cover body 15 are fixedly connected via a second quick-release caliper 34 .

[0032] When the second cover body 15 needs to be disassembled, the second quick-release caliper 34 can be removed, and then the second cover body 15 can be removed from the second connecting ring 32 .

[0033] Furthermore, a second annular groove is provided on the top surface of the second cover body 15 at a position corresponding to the second connecting ring 32 , and a second sealing ring is provided in the second annular groove for sealingly contacting with the bottom surface of the second connecting ring 32 .

[0034] In one embodiment, the third partition plate 18 is placed on the filter element 24 and abuts against the filter element 24 .

[0035] In another embodiment, a stopper 36 for the third partition 18 to prevent is provided on the inner wall of the tank body 11 . When the third partition 18 is placed on the stopper 36 , the bottom surface of the third partition 18 abuts against the top end of the filter element 24 .

[0036] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An absorption and filtration device for crystalline tail gas from a vacuum heat treatment atmosphere furnace, characterized in that: The absorption and filtering device comprises a tank body, a first opening arranged at the top end of the tank body, a second opening arranged at the bottom end of the tank body, a first cover body detachably covered on the first opening, a second cover body detachably covered on the second opening, a first partition plate fixedly arranged in the tank body, a second partition plate fixedly arranged in the tank body and located above the first partition plate, and a third partition plate detachably arranged in the tank body and located above the second partition plate, wherein the first partition plate, the second partition plate and the third partition plate divide the interior of the tank body into a first chamber, a second chamber, a third chamber and a fourth chamber which are sealed and isolated from each other, and the first chamber, the second chamber, the third chamber and the fourth chamber are arranged from bottom to top; A plurality of fin tubes are provided in the second chamber to connect the first chamber and the third chamber, the plurality of fin tubes are arranged at the periphery of the first partition plate and the second partition plate, a filter element is provided between the second partition plate and the third partition plate, a communication port is provided in the middle of the third partition plate to connect the third chamber and the fourth chamber, and the filter element is arranged around the communication port; An air inlet communicating with the first chamber is provided on the bottom side wall of the tank body, an air outlet communicating with the fourth chamber is provided on the top side wall of the tank body, a vacuum valve is provided on the air outlet, and a water inlet and outlet communicating with the second chamber are also provided on the side wall of the tank body.

2. The absorption and filtering device for the tail gas containing crystallization in the vacuum heat treatment atmosphere furnace according to claim 1, characterized in that: The periphery of the first partition is provided with a first air hole communicating with the bottom end of the fin tube, and the periphery of the second partition is provided with a second air hole communicating with the top end of the fin tube.

3. The absorption and filtering device for the tail gas containing crystallization in the vacuum heat treatment atmosphere furnace according to claim 2, characterized in that: The filter element is arranged between the second air hole and the communication port.

4. The absorption and filtering device for the tail gas containing crystallization in the vacuum heat treatment atmosphere furnace according to claim 1, characterized in that: A first connecting ring is fixedly arranged on the periphery of the top end of the tank body, the first cover body is covered on the first connecting ring, and the periphery of the first connecting ring and the periphery of the first cover body are fixedly connected by a first quick-release caliper.

5. The absorption and filtering device for the tail gas containing crystallization in the vacuum heat treatment atmosphere furnace according to claim 4, characterized in that: A first annular groove is provided at a position on the bottom surface of the first cover body corresponding to the first connecting ring, and a first sealing ring is provided in the first annular groove and can be in sealing contact with the top surface of the first connecting ring.

6. The absorption and filtering device for the tail gas containing crystallization in the vacuum heat treatment atmosphere furnace according to claim 1, characterized in that: A second connecting ring is fixedly provided at the periphery of the bottom end of the tank body, the second cover body is covered on the second connecting ring, and the periphery of the second connecting ring and the periphery of the second cover body are fixedly connected via a second quick-release caliper.

7. The absorption and filtering device for the tail gas containing crystallization in the vacuum heat treatment atmosphere furnace according to claim 6, characterized in that: A second annular groove is provided at a position on the top surface of the second cover body corresponding to the second connecting ring, and a second sealing ring is provided in the second annular groove and can be in sealing contact with the bottom surface of the second connecting ring.

8. The absorption and filtering device for the crystallization tail gas of the vacuum heat treatment atmosphere furnace according to claim 1, characterized in that: The third partition is placed on the filter element and abuts against the filter element; Alternatively, a stopper for preventing the third partition from moving is provided on the inner wall of the tank body, and when the third partition is placed on the stopper, the bottom surface of the third partition abuts against the top end of the filter element.

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