CN220560031U - Diffusion furnace door waste gas collecting device - Google Patents
Diffusion furnace door waste gas collecting device Download PDFInfo
- Publication number
- CN220560031U CN220560031U CN202322101501.6U CN202322101501U CN220560031U CN 220560031 U CN220560031 U CN 220560031U CN 202322101501 U CN202322101501 U CN 202322101501U CN 220560031 U CN220560031 U CN 220560031U
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- Prior art keywords
- exhaust
- pipe
- diffusion furnace
- furnace door
- switching
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 49
- 239000002912 waste gas Substances 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 8
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a diffusion furnace door waste gas collecting device, which comprises an exhaust main pipe communicated with a diffusion furnace waste gas collecting system, wherein an exhaust branch pipe used for collecting waste gas at a diffusion furnace door is arranged on the exhaust main pipe, one end of the exhaust branch pipe is communicated with the exhaust main pipe, the other end of the exhaust branch pipe is positioned at the lower end of the diffusion furnace door, and a switching component used for switching the communicated exhaust branch pipe is arranged in the exhaust main pipe; the utility model utilizes the exhaust main pipe communicated with the exhaust system and the exhaust branch pipe positioned at the diffusion furnace door to collect the acid gas at the furnace door, reduces the accumulation of the acid gas at the diffusion furnace door and the metaphosphoric acid, reduces the corrosion of metaphosphoric acid to the furnace door and improves the product quality.
Description
Technical Field
The utility model relates to the technical field of battery piece production equipment, in particular to a diffusion furnace door waste gas collecting device.
Background
The diffusion process is a core process of the solar cell technology, the stability of a diffusion process machine directly influences the performance of PN junctions of the cell, and finally the photoelectric conversion efficiency of the cell is influenced. The diffusion equipment needs to carry the phosphorus source to the furnace tube through small nitrogen to carry out diffusion and knot in the operation process, and waste gas generated in the process needs to be discharged through a peripheral waste discharge device, otherwise, a large amount of acid gas and metaphosphoric acid can be accumulated in a pipeline and a furnace gate, the acid gas and metaphosphoric acid have strong corrosiveness on a furnace door, and once the metaphosphoric acid drops to the battery piece, pollution is caused to a product, the photoelectric conversion efficiency of the battery piece is finally influenced, and the product cost is further increased.
Disclosure of Invention
The technical purpose is that: aiming at the defects of the prior diffusion furnace equipment, the utility model discloses a diffusion furnace door waste gas collecting device capable of effectively collecting waste gas and avoiding acid gas accumulation.
The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a diffusion furnace gate waste gas collection device, includes the exhaust main pipe that is linked together with diffusion furnace waste gas collection system, is equipped with the exhaust branch pipe that is used for collecting the waste gas of diffusion furnace gate department on the exhaust main pipe, exhaust branch pipe is linked together with the exhaust main pipe with one end, and the other end is in the lower extreme of diffusion furnace gate, is equipped with the switching component that switches to the exhaust branch pipe that is linked together in the exhaust main pipe.
Preferably, the switching assembly comprises a switching pipe concentrically arranged in the main exhaust pipe, an elastic expansion joint used for being communicated with the branch exhaust pipe is arranged on the switching pipe, and when the switching pipe rotates, the elastic expansion joint is driven to the corresponding branch exhaust pipe to be communicated with the main exhaust pipe.
Preferably, the end part of the switching tube of the present utility model extends out of the main exhaust tube and is connected to the driving end of the driving motor disposed outside the main exhaust tube.
Preferably, the elastic expansion joint comprises a joint body, wherein the joint body adopts a T-shaped hollow structure, one end of the joint body is positioned in the switching tube, the other end of the joint body is positioned outside the switching tube and is connected with an opening on the switching tube in a sliding fit manner, a spring is arranged between a step surface of the joint body and the inner wall of the switching tube, the spring is sleeved on the joint body, one end of the spring is fixedly connected with the switching tube, and the other end of the spring is fixedly connected with the step surface of the joint body.
Preferably, the elastic expansion joints of the present utility model are arranged at equally spaced angles along the circumferential direction of the switching tube.
Preferably, the exhaust branch pipe is provided with a dust collection cover at one end close to the diffusion furnace door, and the dust collection cover adopts an arc-shaped structure.
Preferably, the main exhaust pipe and the branch exhaust pipe of the present utility model are each made of stainless steel pipes.
The beneficial effects are that: the diffusion furnace door waste gas collecting device provided by the utility model has the following beneficial effects:
1. the utility model utilizes the exhaust main pipe communicated with the exhaust system and the exhaust branch pipe positioned at the diffusion furnace door to collect the acid gas at the furnace door, reduces the accumulation of the acid gas at the diffusion furnace door and the metaphosphoric acid, reduces the corrosion of metaphosphoric acid to the furnace door and improves the product quality.
2. The switching component is arranged in the main exhaust pipe, so that the exhaust branch pipe of the main exhaust pipe can be changed, the dynamic switching according to different opening and closing states of the diffusion furnace door is realized, the treatment capacity of waste gas can be reduced, and meanwhile, the waste gas at the furnace door can be effectively collected in a low-energy consumption state, and the requirement on equipment is reduced.
3. The switching pipe is connected with the exhaust branch pipe through the elastic expansion joint, and when the switching pipe rotates to the corresponding exhaust branch pipe, the exhaust branch pipe is communicated with the exhaust main pipe, and meanwhile, the sealing of other exhaust branch pipes is kept.
4. The dust collection cover with the arc-shaped structure is arranged at the end part of the exhaust branch pipe, so that acid gas below the furnace door can be effectively collected.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of the connection of a collection device to a diffusion furnace door of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model in which the switching tube is located axially along one of the elastomeric expansion joints;
wherein, 1-exhaust main pipe, 2-diffusion furnace door, 3-exhaust branch pipe, 4-switching pipe, 5-joint main body, 6-spring.
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the utility model are shown, but in which the utility model is not so limited.
As shown in fig. 1 and fig. 2, the exhaust gas collecting device of the diffusion furnace door disclosed by the utility model comprises an exhaust main pipe 1 communicated with an exhaust gas collecting system of the diffusion furnace, an exhaust branch pipe 3 used for collecting exhaust gas at the position of the diffusion furnace door 2 is arranged on the exhaust main pipe 1, one end of the exhaust branch pipe 3 is communicated with the exhaust main pipe 1, the other end of the exhaust branch pipe is positioned at the lower end of the diffusion furnace door 2, the exhaust main pipe 1 and the exhaust branch pipe 3 are respectively made of stainless steel pipes, and a switching component used for switching the communicated exhaust branch pipe 3 is arranged in the exhaust main pipe 1.
Specifically, as shown in fig. 2, the switching assembly of the present utility model includes a switching tube 4 concentrically disposed in an exhaust main tube 1, wherein an end portion of the switching tube 4 extends out of the exhaust main tube 1 and is connected with a driving end of a driving motor disposed outside the exhaust main tube 1, an elastic expansion joint for communicating with an exhaust branch tube 3 is disposed on the switching tube 4, and when the switching tube 4 rotates, the elastic expansion joint is driven to a corresponding exhaust branch tube 3 to communicate the exhaust branch tube 3 with the exhaust main tube 1.
The elastic expansion joint comprises a joint body 5, wherein the joint body 5 adopts a T-shaped hollow structure, one end of the joint body 5 is positioned in a switching tube 4, the other end of the joint body is positioned outside the switching tube 4 and is connected with an opening on the switching tube 4 in a sliding fit manner, a spring 6 is arranged between a step surface of the joint body 5 and the inner wall of the switching tube 4, the spring 6 is sleeved on the joint body 5, one end of the spring is fixedly connected with the switching tube 4, and the other end of the spring is fixedly connected with the step surface of the joint body 5. When the spring 6 is in a natural state, the end of the joint body 5 protrudes out of the opening of the switching tube 4.
Because different diffusion furnace doors may be opened in different states, in order to facilitate the collection of exhaust gas of the diffusion furnace doors and promote the collection effect of a single exhaust branch pipe, when the independent switching control is required, the elastic expansion joints are arranged at equal intervals along the circumferential direction of the switching pipe 4, and the elastic expansion joints can be correspondingly arranged according to the opening and closing requirements of the diffusion furnace doors.
In order to increase the collection area, the exhaust branch pipe 3 is provided with a dust collection cover at one end close to the diffusion furnace door 2, and the dust collection cover adopts an arc-shaped structure, is preferably matched with the shape of the diffusion furnace door, and avoids affecting the opening and closing of the furnace door.
When the diffusion furnace door waste gas collecting device provided by the utility model is used, the switching pipe 4 is driven to rotate by the driving motor, in the rotating process, the joint main body 5 is subjected to the pressure of the inner wall of the exhaust main pipe 1, the whole joint main body 5 moves into the switching pipe 4, the spring 6 is in an extension state, the joint main body 5 is applied with a pulling force moving outwards, when the diffusion furnace door waste gas collecting device rotates to the pipe orifice of the corresponding exhaust branch pipe 3, under the action of the spring 6, the end part of the joint main body 5 enters the pipe orifice, the exhaust branch pipe 3 is communicated with the switching pipe 4, waste gas at the diffusion furnace door is sucked into the switching pipe 4, the end part of the switching pipe 4 is communicated with the exhaust main pipe, and the waste gas is sent into the waste gas collecting system of the diffusion furnace by the exhaust main pipe, so that the rotation resistance is reduced, the joint main body 5 is prevented from generating larger resistance to the rotation between the pipe orifice of the exhaust branch pipe 3, and the outer periphery of one end of the joint main body 5, which is close to the pipe orifice of the exhaust branch pipe 3, is provided with an inclined plane, and when the switching pipe 4 rotates, the joint main body 5 and the exhaust branch pipe 3 can be smoothly separated from each other, and compressed into the switching pipe 4.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (6)
1. The diffusion furnace door waste gas collecting device is characterized by comprising an exhaust main pipe (1) communicated with a diffusion furnace waste gas collecting system, wherein an exhaust branch pipe (3) for collecting waste gas at a diffusion furnace door (2) is arranged on the exhaust main pipe (1), one end of the exhaust branch pipe (3) is communicated with the exhaust main pipe (1), the other end of the exhaust branch pipe is positioned at the lower end of the diffusion furnace door (2), and a switching component for switching the communicated exhaust branch pipe (3) is arranged in the exhaust main pipe (1); the switching assembly comprises a switching pipe (4) concentrically arranged in the main exhaust pipe (1), an elastic expansion joint communicated with the exhaust branch pipe (3) is arranged on the switching pipe (4), and when the switching pipe (4) rotates, the elastic expansion joint is driven to the corresponding exhaust branch pipe (3) to communicate the exhaust branch pipe (3) with the main exhaust pipe (1).
2. The diffusion furnace door waste gas collecting device according to claim 1, wherein the end part of the switching tube (4) extends out of the main exhaust tube (1) and is connected with the driving end of a driving motor arranged outside the main exhaust tube (1).
3. The diffusion furnace door waste gas collecting device according to claim 1, wherein the elastic expansion joint comprises a joint body (5), the joint body (5) adopts a T-shaped hollow structure, one end of the joint body (5) is positioned in the switching tube (4), the other end of the joint body is positioned outside the switching tube (4), the joint body is connected with an opening on the switching tube (4) in a sliding fit manner, a spring (6) is arranged between a step surface of the joint body (5) and the inner wall of the switching tube (4), the spring (6) is sleeved on the joint body (5), one end of the spring is fixedly connected with the switching tube (4), and the other end of the spring is fixedly connected with the step surface of the joint body (5).
4. The diffusion furnace door exhaust gas collecting device according to claim 1, characterized in that the elastic expansion joints are arranged at equally spaced angles in the circumferential direction of the switching tube (4).
5. The exhaust gas collecting device of the diffusion furnace door according to claim 1, wherein the exhaust branch pipe (3) is provided with a dust collection cover at one end close to the diffusion furnace door (2), and the dust collection cover adopts an arc structure.
6. The diffusion furnace door waste gas collecting device according to claim 1, wherein the main exhaust pipe (1) and the branch exhaust pipe (3) are made of stainless steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101501.6U CN220560031U (en) | 2023-08-07 | 2023-08-07 | Diffusion furnace door waste gas collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101501.6U CN220560031U (en) | 2023-08-07 | 2023-08-07 | Diffusion furnace door waste gas collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220560031U true CN220560031U (en) | 2024-03-08 |
Family
ID=90101499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322101501.6U Active CN220560031U (en) | 2023-08-07 | 2023-08-07 | Diffusion furnace door waste gas collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220560031U (en) |
-
2023
- 2023-08-07 CN CN202322101501.6U patent/CN220560031U/en active Active
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