WO2018177241A1

WO2018177241A1 - Dual-line drying and sintering furnace

Info

Publication number: WO2018177241A1
Application number: PCT/CN2018/080464
Authority: WO
Inventors: 罗贤良
Original assignee: 东莞市科隆威自动化设备有限公司
Priority date: 2017-03-31
Filing date: 2018-03-26
Publication date: 2018-10-04
Also published as: CN107062894A

Abstract

Disclosed is a dual-line drying and sintering furnace, comprising two supports (1) arranged in parallel. The two supports (1) have a certain spacing distance (11) therebetween, and the two supports (1) are both arranged on a main support. A chain conveying device (2), which is used for conveying a silicon wafer in the same direction, is driven by dual power and has an automatic tensioning function, is respectively arranged on the two supports (1). The two chain conveying devices (2) are successively provided with a drying region (3), a sintering region (4) and a cooling region (5) from an input end to an output end respectively. Multiple furnace chambers capable of independently controlling the temperature are arranged in a sintering furnace body (8) at intervals. An input end and an output end of the sintering furnace body (8) are both provided with an air extraction device (9). A material outlet end of a drying furnace body (6) and a material inlet end of the sintering furnace body (8) have a certain space therebetween. Material inlet ends of the two chain conveying devices (2) of the dual-line drying and sintering furnace are respectively in a direct butt-joint with conveyor tracks of a screen printer, and the two conveyor tracks simultaneously convey products. No transplanting device is required at a butting portion between the conveying device (2) and the screen printer, and products can be directly conveyed, which reduces the damage to the products, thereby improving the product quality.

Description

Double wire drying sintering furnace

Technical field

The invention relates to the field of drying and sintering of photovoltaic cells, in particular to a two-wire drying sintering furnace.

Background technique

At present, the existing photovoltaic cell drying and sintering equipment can only be single-line transportation. However, if double-line transportation is required, a cross-transplanting device needs to be added at the connection end of the drying sintering furnace and the screen printing machine. To carry the product, when the product is transported and transported, it will cause certain damage to the product and affect the quality of the finished product.

Moreover, the existing furnace body is also quite difficult to maintain, and the structures of the sintering furnace and the drying furnace are composed of an upper furnace body and a lower furnace body, and a passage for the product to pass between the upper furnace body and the lower furnace body, the slurry The material contains an organic resin binder, which is decomposed by high temperature and adhered to the inner furnace body. If it is necessary to clean the lower furnace body, the upper furnace body needs to be opened. The existing upper furnace opening method is to turn back along one side of the furnace body, and needs to be supported by one hand and the other hand to clean the lower furnace body. This way not only cleaning and maintenance is slow, but also labor labor. Big.

Summary of the invention

The object of the present invention is to provide a two-wire drying sintering furnace with high productivity, convenient and quick connection of the conveying line and no need for transplanting products in the middle, in view of the above-mentioned defects of the prior art.

In order to solve the above-mentioned defects of the prior art, the technical solution provided by the present invention is: a two-wire drying sintering furnace comprising two brackets arranged in parallel, and the two brackets have a certain separation distance between the two brackets. The brackets are arranged on the same main bracket, and both of the brackets are provided with a chain conveying device which transmits silicon wafers in the same direction and has dual power and automatic tensioning, and the two conveying devices are from the input end to the output. The drying end is provided with a drying zone, a sintering zone and a cooling zone, and the drying zone is provided with a drying furnace body, and the discharging end of the drying furnace body is provided with an exhaust gas burning tower, and the sintering zone is provided There is a sintering furnace body, wherein the sintering furnace body is provided with a plurality of furnace chambers for independently controlling the temperature, and the input end and the output end of the sintering furnace body are provided with a drafting device, and the discharging body of the drying furnace body is discharged The end is provided with a certain gap between the feeding end of the sintering furnace body;

The drying furnace body comprises an upper drying furnace body and a lower drying furnace body, wherein the upper drying furnace body is provided with a plurality of vertical lifting devices spaced apart, the upper drying furnace body and the lower drying furnace body cover a passage between the upper drying furnace body and the lower drying furnace body for the passage of the product;

The sintering furnace body comprises an upper sintering furnace body and a lower sintering furnace body, wherein the upper sintering furnace body is provided with a plurality of vertical lifting devices, the upper sintering furnace body and the lower sintering furnace body are covered, and the upper sintering furnace Between the body and the lower sintering furnace body there is a passage for the product to pass;

The feeding ends of the two chain conveying devices directly abut the conveying track of the screen printing machine, one chain conveying device abuts one conveying track, and the two conveying tracks simultaneously convey the products.

As an improvement of the two-wire drying sintering furnace of the present invention, the chain conveying device comprises a main driving roller assembly disposed at one end of the bracket and having dual power, a auxiliary driving roller assembly disposed at the other end of the bracket, and disposed at a lower end of the bracket. a lower chain conveying passage, and an upper chain conveying passage disposed at an upper end of the bracket, wherein the main driving roller assembly and the auxiliary driving roller assembly are connected by a circulating metal chain, and the circulating metal chain is driven by the main driving roller The assembly is driven and circulated through the upper chain transport channel and the lower chain transport channel.

As an improvement of the two-wire drying sintering furnace of the present invention, the main driving roller assembly includes an upper main roller and a lower main roller mounted on the bracket, and the upper main roller and the lower main roller are driven by a motor When the motor drives the upper main roller and the lower main roller to rotate, the upper main roller rotates clockwise, and the lower main roller rotates counterclockwise.

As an improvement of the two-wire drying sintering furnace of the present invention, the sprocket set includes a main drive sprocket and a secondary drive sprocket, and the main drive sprocket and the auxiliary drive sprocket and the sprocket at the end of the upper main roller The transmission connection is connected to the sprocket of the main drive sprocket and the lower main roller end.

As an improvement of the two-wire drying sintering furnace of the present invention, an automatic tensioning wheel bracket is respectively disposed at two ends of the bracket, and an automatic tensioning wheel is disposed on the automatic tensioning wheel bracket, and the automatic tensioning is performed. The level of the wheel is lower than the level of the lower main roller, and the circulating metal chain is sequentially wound along the upper main roller, the lower main roller, and the automatic tensioning roller.

As an improvement of the two-wire drying sintering furnace of the present invention, the secondary transmission roller assembly includes an upper secondary roller and a lower secondary roller mounted on the bracket, and the upper secondary roller and the lower secondary roller are driven by a motor When the motor drives the upper auxiliary roller and the lower secondary roller to rotate, the upper secondary roller rotates clockwise, and the lower secondary roller rotates counterclockwise.

As an improvement of the two-wire drying sintering furnace of the present invention, the lower chain conveying passage is spaced apart from a plurality of rollers, and the circulating metal chain passes through the upper end of the roller;

The surfaces of the upper main roller and the upper sub-roll are spaced apart from each other by a plurality of ribs, and the surfaces of the lower main roller and the lower sub-roll are spaced apart from each other by a plurality of annular grooves; the circulating metal chain is provided with Two rows of chain claws, the area between the two rows of the chain claws for placing the silicon wafer.

As an improvement of the two-wire drying sintering furnace of the present invention, the vertical lifting device comprises a U-shaped connecting angle iron, and a connecting rod is arranged on both sides of the U-shaped connecting angle iron, and the connecting rod is sleeved A telescopic rod is disposed, the telescopic rod is inserted into the rod sleeve, and an end of the rod sleeve is mounted with a motor for controlling the extension or lowering of the telescopic rod, and a plurality of the lifting devices are raised or lowered simultaneously.

As an improvement of the two-wire drying sintering furnace of the present invention, when the vertical lifting device vertically lifts the upper drying furnace body and the upper sintering furnace body, the upper drying furnace body and the lower drying furnace The passage between the bodies, and the passage between the upper sintering furnace body and the lower sintering furnace body are increased.

As an improvement of the two-wire drying sintering furnace of the present invention, the corresponding surfaces of the upper drying furnace body and the lower drying furnace body are respectively provided with a first heating chamber, and the first heating chamber is provided with a plurality of intervals a first heating pipe, wherein the upper drying furnace body and the lower drying furnace body are respectively provided with a first temperature sensor for detecting or monitoring the temperature of the first heating chamber;

a second heating chamber is disposed on the corresponding surface of the upper sintering furnace body and the lower sintering furnace body, and a plurality of second heating tubes are disposed in the second heating chamber; the upper sintering furnace body and the lower sintering furnace body A second temperature sensor is provided for detecting or monitoring the temperature of the second heating chamber.

Compared with the prior art, the invention has the advantages that: the feeding end of the two chain conveying devices of the two-wire drying sintering furnace of the invention directly docks the conveying track of the screen printing machine, and one chain conveying device docks one conveying track, two The conveyor track simultaneously transports the product. The docking device of the conveying device and the screen printing machine does not need a transplanting device, and can directly transport the product, thereby reducing damage to the product and improving the quality of the product. The conveying line of the product adopts the chain conveying device with double power and automatic tensioning, which has the advantages of smooth conveying, and the furnace body is provided with a vertical lifting device, and the lifting device vertically hoisting the upper drying furnace body and the upper sintering furnace body, It is easy to clean the furnace body, convenient for maintenance and maintenance, no need for manual lifting, no need for support, convenient and quick.

DRAWINGS

The present invention and its beneficial technical effects will be further described in detail below based on the drawings and specific embodiments, wherein:

1 is a schematic perspective view of a two-wire double furnace of the present invention.

2 is a schematic perspective view of a single wire single furnace of the present invention.

Figure 3 is a partial structural view of the chain conveying device of the present invention.

Figure 4 is a partial structural view of the vertical lifting device of the present invention.

Reference symbol name:

1-bracket;

2-chain conveyor;

22-Main drive roller assembly 23-Second drive roller assembly 24-Lower chain conveyor channel 25-Upper chain conveyor channel 26-Automatic tensioner bracket 27-Automatic tensioner 28-Roller 29-rib 210-ring groove 221-upper main roll 222-lower main roll;

3-drying zone;

4-sintering zone;

5-cooling zone;

6-drying the furnace body;

61-drying the furnace body 62, drying the furnace body;

7-exhaust gas burning tower;

8-sintered furnace body;

81-upper sintering furnace body 82-lower sintering furnace body;

9-exhaust device;

10-lifting device

101-U connecting angle iron 102-connecting rod 103- telescopic rod 104-bar sleeve 105-motor;

11-separation distance

detailed description

The invention will now be further described with reference to the drawings and specific embodiments, but the embodiments of the invention are not limited thereto.

As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, a two-wire drying sintering furnace comprises two brackets 1 arranged in parallel, and the two brackets 1 have a certain separation distance 11 which is sufficient. The staff enters and maintains the machine, and the two brackets 1 are disposed on the same main bracket. Both brackets 1 are provided with chain conveyors 2 for transmitting silicon wafers in the same direction and having dual power and automatic tensioning, two The chain conveying device 2 is provided with a drying zone 3, a sintering zone 4 and a cooling zone 5 in sequence from the input end to the output end. The drying zone 3 is provided with a drying furnace body 6, and the discharging end of the drying furnace body 6 is provided. There is an exhaust gas combustion tower 7, a sintering furnace body 8 is arranged on the sintering zone 4, and a plurality of furnace chambers capable of independently controlling temperature are arranged on the sintering furnace body 8, and an exhausting device is arranged at the input end and the output end of the sintering furnace body 8. 9. The discharge end of the drying furnace body 6 and the feeding end of the sintering furnace body 8 are provided with a certain gap;

The drying furnace body 6 includes an upper drying furnace body 61 and a lower drying furnace body 62. The upper drying furnace body 61 is provided with a plurality of vertical lifting devices 10, an upper drying furnace body 61 and a lower drying furnace body 62. Covering, there is a passage for the product to pass between the upper drying furnace body 61 and the lower drying furnace body 62;

The sintering furnace body 8 includes an upper sintering furnace body 81 and a lower sintering furnace body 82. The upper sintering furnace body 81 is provided with a plurality of vertical lifting devices 10, and the upper sintering furnace body 81 and the lower sintering furnace body 82 are closed, and the upper sintering furnace body is closed. There is a passage between the 81 and the lower sintering furnace body 82 for the passage of the product;

The feeding end of the two chain conveying devices 2 directly abuts the conveying track of the screen printing machine, and one chain conveying device 2 abuts a conveying track, and the two conveying tracks simultaneously convey the product.

Preferably, the chain conveying device 2 includes a main driving roller assembly 22 disposed at one end of the bracket 1 and having dual power, a secondary driving roller assembly 23 disposed at the other end of the bracket 1, and a lower chain conveying passage 24 disposed at a lower end of the bracket 1. And an upper chain conveying passage 25 disposed at the upper end of the bracket 1, the main driving roller assembly 22 and the auxiliary driving roller assembly 23 are connected by a circulating metal chain, and the circulating metal chain is driven by the main driving roller assembly 22 and circulated through the upper chain. Channel 25 and lower chain delivery channel 24.

Preferably, the main drive roller assembly 22 includes an upper main roller 221 and a lower main roller 222 mounted on the bracket 1, and the upper main roller 221 and the lower main roller 222 are driven by a motor drive sprocket set, and the motor drives the upper main roller 221 and When the lower main roller 222 rotates, the upper main roller 221 rotates clockwise, and the lower main roller 222 rotates counterclockwise.

Preferably, the sprocket set comprises a main drive sprocket and a secondary drive sprocket, a sprocket drive connection of the main drive sprocket and the auxiliary drive sprocket and the upper main roller 221 end, the auxiliary drive sprocket and the main drive sprocket and the lower The sprocket drive connection at the end of the main roller 222.

Preferably, the two ends of the bracket 1 are respectively provided with an automatic tensioning wheel bracket 26, and the automatic tensioning wheel bracket 26 is provided with an automatic tensioning wheel 27, and the level of the automatic tensioning pulley 27 is lower than the level of the lower main roller 222. The height, the circulating metal chain is sequentially wound along the upper main roller 221, the lower main roller 222, and the automatic tension pulley 27.

Preferably, the auxiliary drive roller assembly comprises an upper auxiliary roller and a lower secondary roller mounted on the bracket 1, and the upper secondary roller and the lower secondary roller are driven by a motor drive sprocket set, and when the motor drives the upper secondary roller and the lower secondary roller to rotate, The upper sub-roller rotates clockwise and the lower sub-roller rotates counterclockwise.

Preferably, the lower chain conveying passage 24 is spaced apart from the plurality of rollers 28, and the circulating metal chain passes from the upper end of the idler roller 28.

Preferably, the surfaces of the upper main roller 221 and the upper sub-roller are spaced apart from each other by a plurality of ribs 29, and the surfaces of the lower main roller 222 and the lower sub-roller are spaced apart from each other by a plurality of annular grooves 210.

Preferably, the circulating metal chain is provided with two rows of chain claws, and an area between the two rows of chain claws is used for placing the silicon wafer.

Preferably, the vertical hoisting device 10 includes a U-shaped connecting angle iron 101. A connecting rod 102 is disposed on both sides of the U-shaped connecting angle iron 101. The connecting rod 102 is sleeved with a telescopic rod 103, and the telescopic rod 103 is inserted. On the sleeve 104, the end of the sleeve 104 is fitted with a motor 105 for controlling the rise or fall of the telescopic rod.

Preferably, the plurality of vertical lifting devices 10 are raised or lowered simultaneously.

Preferably, the drive of the vertical hoisting device 10 is a power rod.

Preferably, when the vertical hoisting device 10 vertically hoists the upper drying furnace body 61 and the upper sintering furnace body 81, the passage between the upper drying furnace body 61 and the lower drying furnace body 62, and the upper sintering furnace body 81 and the lower The passage 106 between the sintering furnace bodies 82 is enlarged.

Preferably, the corresponding surfaces of the upper drying furnace body 61 and the lower drying furnace body 62 are respectively provided with a first heating chamber, and the first heating chamber is provided with a plurality of first heating tubes, the upper drying furnace body 61 and the lower portion. The drying furnace body 62 is provided with a first temperature sensor for detecting or monitoring the temperature of the first heating chamber;

A second heating chamber is disposed on the corresponding surface of the upper sintering furnace body 81 and the lower sintering furnace body 82, and a plurality of second heating tubes are disposed in the second heating chamber; the upper sintering furnace body 81 and the lower sintering furnace body 82 are both disposed. A second temperature sensor is provided for detecting or monitoring the temperature of the second heating chamber.

The invention has the advantages that: the feeding end of the two chain conveying devices of the two-wire drying sintering furnace of the invention directly docks the conveying track of the screen printing machine, one chain conveying device abuts one conveying track, and the two conveying tracks simultaneously convey the product. The docking device of the conveying device and the screen printing machine does not need a transplanting device, and can directly transport the product, thereby reducing damage to the product and improving the quality of the product. The conveying line of the product adopts the chain conveying device with double power and automatic tensioning, which has the advantages of smooth conveying, and the furnace body is provided with a vertical lifting device, and the lifting device vertically hoisting the upper drying furnace body and the upper sintering furnace body, It is easy to clean the furnace body, convenient for maintenance and maintenance, no need for manual lifting, no need for support, convenient and quick.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art The scope of the invention is defined by the appended claims and their equivalents.

Claims

A two-wire drying sintering furnace is characterized in that it comprises two brackets arranged in parallel, and the two brackets have a certain distance between them, and the two brackets are arranged on the same total bracket, two Each of the brackets is provided with a chain conveying device which transmits the silicon wafer in the same direction and has dual power and automatic tensioning, and the two conveying devices are sequentially provided with a drying zone, a sintering zone and cooling from the input end to the output end. a drying furnace body is disposed on the drying zone, and an exhaust gas burning tower is disposed at a discharge end of the drying furnace body, and a sintering furnace body is disposed on the sintering zone, and the sintering furnace body is spaced apart There are a plurality of furnace chambers capable of independently controlling the temperature, and both the input end and the output end of the sintering furnace body are provided with a drafting device, and between the discharge end of the drying furnace body and the feeding end of the sintering furnace body Provided with a certain gap;

The drying furnace body comprises an upper drying furnace body and a lower drying furnace body, wherein the upper drying furnace body is provided with a plurality of vertical lifting devices spaced apart, the upper drying furnace body and the lower drying furnace body cover a passage between the upper drying furnace body and the lower drying furnace body for the passage of the product;

The sintering furnace body comprises an upper sintering furnace body and a lower sintering furnace body, wherein the upper sintering furnace body is provided with a plurality of vertical lifting devices, the upper sintering furnace body and the lower sintering furnace body are covered, and the upper sintering furnace Between the body and the lower sintering furnace body there is a passage for the product to pass;

The feeding ends of the two chain conveying devices directly abut the conveying track of the screen printing machine, one chain conveying device abuts one conveying track, and the two conveying tracks simultaneously convey the products.
The two-wire drying sintering furnace according to claim 1, wherein the chain conveying device comprises a main driving roller assembly provided at one end of the bracket and having dual power, and a auxiliary driving roller assembly disposed at the other end of the bracket, a lower chain conveying passage disposed at a lower end of the bracket, and an upper chain conveying passage disposed at an upper end of the bracket, wherein the main driving roller assembly and the auxiliary driving roller assembly are connected by a circulating metal chain, and the circulating metal chain is The main drive roller assembly drives and circulates through the upper chain transport channel and the lower chain transport channel.
A two-wire drying sintering furnace according to claim 2, wherein said main driving roller assembly comprises an upper main roller and a lower main roller mounted on said bracket, said upper main roller and lower main roller being Driven by a motor drive sprocket set, when the motor drives the upper main roller and the lower main roller to rotate, the upper main roller rotates clockwise, and the lower main roller rotates counterclockwise.
A two-wire drying sintering furnace according to claim 3, wherein said sprocket set comprises a main drive sprocket and a secondary drive sprocket, said main drive sprocket and secondary drive sprocket and upper main roll end The sprocket drive connection of the portion is coupled to the sprocket of the main drive sprocket and the lower main roller end.
The two-wire drying sintering furnace according to claim 4, wherein each of the two ends of the bracket is provided with an automatic tensioning wheel bracket, and the automatic tensioning wheel bracket is provided with an automatic tensioning wheel. The horizontal tension of the automatic tensioning wheel is lower than the horizontal height of the lower main roller, and the circulating metal chain is sequentially wound along the upper main roller, the lower main roller, and the automatic tensioning roller.
A two-wire drying sintering furnace according to claim 5, wherein said secondary transmission roller assembly comprises upper and lower secondary rollers mounted on said bracket, said upper secondary roller and lower secondary roller When the motor drives the sprocket set to rotate, the upper sub-roller rotates clockwise, and the lower sub-roller rotates counterclockwise.
The two-wire drying sintering furnace according to claim 6, wherein a plurality of rollers are spaced apart from the lower chain conveying passage, and the circulating metal chain passes through the upper end of the roller;

The surfaces of the upper main roller and the upper sub-roll are spaced apart from each other by a plurality of ribs, and the surfaces of the lower main roller and the lower sub-roll are spaced apart from each other by a plurality of annular grooves; the circulating metal chain is provided with Two rows of chain claws, the area between the two rows of the chain claws for placing the silicon wafer.
The two-wire drying sintering furnace according to claim 1, wherein the vertical lifting device comprises a U-shaped connecting angle iron, and a connecting rod is disposed on both arms of the U-shaped connecting angle iron, The connecting rod is sleeved with a telescopic rod, the telescopic rod is inserted into the rod sleeve, and the end of the rod sleeve is mounted with a motor for controlling the rising or falling of the telescopic rod, and the plurality of lifting devices are raised or lowered. It is done synchronously.
The two-wire drying sintering furnace according to claim 8, wherein the vertical drying device vertically lifts the upper drying furnace body and the upper sintering furnace body, the upper drying furnace body and The passage between the lower drying furnace bodies and the passage between the upper sintering furnace body and the lower sintering furnace body are increased.
The two-wire drying sintering furnace according to claim 1, wherein the corresponding surfaces of the upper drying furnace body and the lower drying furnace body are respectively provided with a first heating chamber, and the first heating chamber is spaced apart. a plurality of first heating tubes are disposed, and the upper drying furnace body and the lower drying furnace body are respectively provided with a first temperature sensor for detecting or monitoring the temperature of the first heating chamber;

a second heating chamber is disposed on the corresponding surface of the upper sintering furnace body and the lower sintering furnace body, and a plurality of second heating tubes are disposed in the second heating chamber; the upper sintering furnace body and the lower sintering furnace body A second temperature sensor is provided for detecting or monitoring the temperature of the second heating chamber.