CN213687794U - Electronic kiln with gas preheating function - Google Patents

Abstract

An electronic kiln with a gas preheating function comprises a kiln body, wherein the top of the kiln body is provided with an upper smoke exhaust interface which is connected with an upper smoke exhaust pipe in a matching way; the upper heating device is positioned at the upper part of the furnace body in the height direction, two ends of the upper heating device are supported on the corresponding furnace wall of the furnace body, the middle part of the upper heating device is positioned in the hearth, and the upper smoke discharging port is communicated with the hearth; the lower heating device is positioned at the lower part of the furnace body in the height direction, two ends of the lower heating device are supported on the corresponding furnace wall of the furnace body, and the middle part of the lower heating device is positioned in the furnace chamber; the two ends of the sagger conveying roller extend out of the furnace body and are supported on the outer wall of the furnace body, and the middle part of the sagger conveying roller is positioned in the hearth; the sagger conveying roller driving mechanism is arranged corresponding to one side of the furnace body and is connected with the sagger conveying roller; a furnace gas supply mechanism for providing gas to furnace, characteristics: the hearth gas supply mechanism comprises a gas preheating device for preheating gas and leading the preheated gas into the hearth, and the gas preheating device is arranged on the furnace body and communicated with the hearth. The good heat exchange efficiency is embodied; the gas preheating device is prevented from being polluted and damaged.

Description

Electronic kiln with gas preheating function

Technical Field

The utility model belongs to the technical field of the electronic kiln, concretely relates to electronic kiln with gaseous function of preheating.

Background

The electronic kiln has wide application, namely relates to sintered products, can be particularly used for sintering various materials such as electronic powder, electronic components, silicon nitride, aluminum nitride, lithium battery anode materials, polycrystalline silicon, monocrystalline silicon, ceramic materials, fluorescent powder, rare earth materials, ferrite and powder materials thereof and the like, and is indispensable equipment for producing various middle-end and high-end electronic products.

As is known in the art, there are many cases where preheating of the hearth of an electronic kiln is required, the purpose of which is to: the cracking of the electronic element during the sintering in the furnace is avoided, the heat loss in the furnace is prevented, and the condensate water in the furnace is avoided. The prior art has two main ways of preheating the hearth: firstly, gas is simply introduced into a hearth, and the introduced gas is preheated by utilizing the heat in the hearth, but condensed water is generated in the furnace in such a way, so that the pollution to the hearth is caused; and secondly, the introduced gas is preheated by using waste heat flue gas discharged from a chimney of the electronic kiln in a heat exchange mode by means of a heat exchanger, but the waste flue gas is rich in colloid, so that the surface of a heat exchange coil of the heat exchanger is easily pasted, the heat exchange efficiency is reduced, and the service life of the heat exchanger is obviously shortened. However, if the heat exchanger needs to be cleaned, on one hand, the furnace needs to be stopped, which affects the normal working efficiency of the furnace and even the productivity, and on the other hand, the colloid is hard to be accumulated on the surface of the coil of the heat exchanger, so that the cleaning is time-consuming and labor-consuming and has low economical efficiency (the labor and time cost is relatively high).

Technical information on the supply of heating gas to the sintering furnace can be found in published chinese patent documents, and typical examples are CN208012383U recommending "a preheating device for flowing gas of the sintering furnace", CN210464085U describing "preheating device for atmosphere of energy-saving sintering furnace", and CN210119117U providing "preheating energy-saving sintering furnace", etc., but the aforesaid patents are not limited to give any suggestion on how and/or whether to be applied to electronic kilns, and the technical solutions to be described below are made in this context.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide a help embodying good heat exchange efficiency to introducing gas, be favorable to avoiding preheating the gas and receive the pollution and be of value to the even effect that ensures the air current in the furnace and can satisfy the electronic kiln that has gaseous preheating function of high-end electron powder material and electronic component to the harsh requirement of furnace environment.

The utility model aims to provide an electronic kiln with gas preheating function, which comprises a kiln body, wherein an upper smoke discharging interface is arranged at the top of the kiln body and at the position corresponding to each temperature zone, an upper smoke discharging pipe is connected with the upper smoke discharging interface, and the upper smoke discharging pipe is connected with a smoke discharging header pipe; the upper heating device is positioned at the upper part of the height direction of the furnace body and is distributed at intervals along the length direction of the furnace body, two ends of the upper heating device are supported on the corresponding furnace wall of the furnace body, the middle part of the upper heating device is positioned in a hearth of the furnace body, and the upper smoke discharging port is communicated with the hearth; the lower heating device is positioned at the lower part of the furnace body in the height direction and is also distributed at intervals along the length direction of the furnace body, two ends of the lower heating device are supported on the corresponding furnace wall of the furnace body, and the middle part of the lower heating device is positioned in the hearth of the furnace body; sagger conveying rollers which are distributed at intervals along the length direction of the furnace body at positions corresponding to the upper part of the lower heating device, wherein two ends of the sagger conveying rollers extend out of the furnace body and are rotatably supported on the outer wall of the furnace body, and the middle parts of the sagger conveying rollers are also positioned in the hearth; the sagger conveying roller driving mechanism is arranged corresponding to one side of the furnace body and is in transmission connection with the sagger conveying roller; the hearth gas supply mechanism is used for supplying gas to the hearth and is characterized by comprising a gas preheating device which is used for preheating the gas and leading the preheated gas into the hearth, and the gas preheating device is arranged on the furnace body and communicated with the hearth.

In a specific embodiment of the present invention, the furnace gas supply mechanism further comprises a gas supply fan, a gas guide main pipe, a furnace lower gas inlet pipe, a side gas supply pipe and a furnace upper gas inlet pipeline, the gas supply fan is supported on the terrace along with one side of the furnace body, one end of the gas guide main pipe is connected with the gas supply fan air outlet of the gas supply fan, the other end is closed, one end of the furnace lower gas inlet pipe is connected with the side gas supply pipe, the other end of the furnace lower gas inlet pipe is upwardly spaced to form a plurality of furnace lower gas inlet pipe branches, the furnace lower gas inlet pipe branches extend into the furnace bottom lining of the furnace and are communicated with the furnace, a lower gas inlet pipe connecting hose is connected in series on the pipeline of the furnace lower gas inlet pipe, the lower end of the side gas supply pipe is connected with the middle part of the gas guide main pipe, and is provided with a side gas supply pipe, the gas preheating device is connected with the upper end of the side gas supply pipe, the gas inlet pipeline on the hearth is arranged on the upper portion of the furnace body and is connected with the middle of the side gas supply pipe and is communicated with the hearth, and one end of the gas inlet pipe under the hearth is connected with the side gas supply pipe in a position corresponding to the upper portion of the flowmeter.

In another specific embodiment of the utility model, the gas preheating device comprises a preheater, a preheating gas left outlet pipe and a preheating gas right outlet pipe, the preheater is fixed on the top of the furnace body, the preheater is provided with a preheater air inlet and a preheater air outlet, the upper end of the side air supply pipe is connected with the preheater air inlet, the air outlet of the preheater is matched and connected with a three-way joint of the air outlet of the preheater, the upper end of the left outlet pipe of the preheated air is matched and connected with the three-way joint of the air outlet of the preheater, the lower end is matched and connected with the left air inlet interface of the furnace body, the left inlet interface of the furnace body is arranged on the left side of the furnace body and communicated with the hearth, the upper end of the right outlet pipe of the preheating gas is matched and connected with a three-way joint at the gas outlet of the preheater, the lower end of the right outlet pipe of the preheating gas is matched and connected with the right inlet interface of the furnace body, and the right inlet interface of the furnace body is arranged on the right side of the furnace body and communicated with the hearth; the preheater is an electric heating preheater provided with an electric heating assembly.

In another specific embodiment of the present invention, a preheating gas left outlet hose and a preheating gas left outlet airflow regulating valve are connected in series to the pipeline of the preheating gas left outlet; a preheating gas right outlet pipe hose and a preheating gas right outlet pipe airflow regulating valve are connected in series on the pipeline of the preheating gas right outlet pipe; the furnace body left air inlet interface is matched and communicated with a furnace body left air inlet interface air cavity housing fixed on the left side of the furnace body, and an air outlet of a left air cavity housing of the furnace body left air inlet interface air cavity housing is communicated with the hearth; the furnace body right air inlet interface is matched and communicated with a furnace body right air inlet interface air cavity housing fixed on the right side of the furnace body, and an air outlet of a right air cavity housing of the furnace body right air inlet interface air cavity housing is communicated with the hearth.

In another specific embodiment of the present invention, a preheating air temperature measuring device is disposed on the three-way joint at the air outlet of the preheater.

The utility model discloses a still have a concrete embodiment the left side of furnace body is provided with upper left air inlet interface and lower left air inlet interface, is provided with upper right air inlet interface and lower right air inlet interface on the right side of furnace body, sets up the upper portion of furnace body and with the middle part of side air supply pipe is connected the last air inlet pipeline of furnace is simultaneously with upper left air inlet interface and upper right air inlet interface connection or simultaneously with lower left air inlet interface and lower right air inlet interface connection.

The utility model discloses a more and a concrete embodiment, last air inlet pipe of furnace and three way connection bleed air pipe on three way connection head, left shunt tubes, right shunt tubes, furnace, the one end of this three way connection bleed air pipe with the middle part of side air supply pipe is connected, and the other end is connected with three way connection head, the one end of left shunt tubes with upper left air inlet interface or lower left air inlet interface connection, and the other end upwards extends to the top of furnace body and be connected with three way connection head, the one end of right shunt tubes with upper right air inlet interface or lower right air inlet interface, and the other end upwards extends to the top of furnace body and be connected with three way connection head, last air inlet pipe of furnace is in the furnace in-connection is between upper left air inlet interface and upper right air inlet interface or is connected between lower left air inlet interface and lower right air inlet interface, on this furnace air inlet pipe one side down and be equipped with furnace upper air inlet pipe at the regional interval that corresponds furnace And an air outlet.

In yet another specific embodiment of the present invention, a left shunt tube hose is connected in series to the left shunt tube, and a right shunt tube hose is connected in series to the right shunt tube.

In yet a more particular embodiment of the present invention, there is a motor support, a drive wheel support and a sagger delivery roller drive support on the left side of the furnace body and at a position corresponding to the sagger delivery roller drive mechanism in drive connection with the sagger delivery roller, the motor support being fixed to the left side of the furnace body support chassis at the bottom of the furnace body, the drive wheel support being fixed to the left side of the furnace body and corresponding to above the motor support, the sagger delivery roller drive support being likewise fixed to the left side of the furnace body and corresponding to above the drive wheel support; and the sagger conveying roller driving mechanisms are distributed on the motor bracket, the driving wheel bracket and the sagger conveying roller driving bracket.

In yet another specific embodiment of the present invention, the sagger conveyor roller driving mechanism includes a motor, a motor driving sprocket, a transition driving sprocket seat, a transition driving sprocket, a reduction box power input sprocket, a reduction box power output sprocket, a sagger conveyor roller driving sprocket, a first driving chain i, a second driving chain ii and a third driving chain iii, the motor is disposed on the motor support, the motor driving sprocket is fixed on the motor power output shaft of the motor, the transition driving sprocket seat is disposed on the driving wheel support in a mated state, the transition driving sprocket is a double-row sprocket and is fixed on the transition driving sprocket seat, and the transition driving sprocket seat is rotatably supported on the transition driving sprocket seat, the reduction box is fixed on the sagger conveyor roller driving support, the reduction box power input sprocket is fixed on the reduction box power input shaft of the reduction box, the reduction gearbox power output chain wheel is fixed on a reduction gearbox power output shaft of the reduction gearbox, the sagger conveying roller driving chain wheel is a double-row chain wheel and is fixed at the left end of the sagger conveying roller, the sagger conveying roller driving chain wheels on adjacent sagger conveying rollers are in transmission connection through a transition chain, the lower end of a first transmission chain I is sleeved on the motor driving chain wheel, the upper end of the first transmission chain I is sleeved on the transition transmission chain wheel, the lower end of a second transmission chain II is sleeved on the transition transmission chain wheel, the upper end of the second transmission chain II is sleeved on the reduction gearbox power input chain wheel, the upper end of a third transmission chain III is sleeved on the reduction gearbox power output chain wheel, and the lower end of the.

The technical scheme provided by the utility model the technical effect lie in: because the gas preheated by the gas preheating device is introduced into the hearth by the hearth gas supply mechanism, good heat exchange efficiency can be embodied; because the gas preheating device uses the electric heating component to heat the gas, the cleaning effect of the preheated air introduced into the hearth can be ensured, and the gas preheating device can be prevented from being polluted and damaged; because the hearth gas supply mechanism can supply gas to the hearth from top to bottom, from left to right, the uniform airflow effect can be reflected, and the severe requirements of high-end electronic powder materials and electronic elements on the hearth environment can be met.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a right side view of fig. 1.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.

Referring to fig. 1 and fig. 2, there is shown a furnace body 1, an upper smoke discharging port 18 is disposed at the top of the furnace body 1 and at a position corresponding to each temperature zone, an upper smoke discharging pipe 181 is connected to the upper smoke discharging port 18, the upper smoke discharging pipe 181 is connected to a smoke discharging main pipe 8, according to the general knowledge of the art and according to the schematic diagram of fig. 2, since the furnace body 1 generally comprises a preheating section, a temperature rising section, a constant temperature section, a temperature lowering section and a cooling section, the length is relatively long, electronic powder material to be sintered, such as lithium battery anode material or electronic component product, enters a furnace chamber from a material inlet of the preheating section, slowly passes through the temperature rising section, the constant temperature section and the temperature lowering section, and then is discharged from a material outlet at the end of the cooling section, thereby completing the sintering process; the upper heating device 2 is positioned at the upper part of the furnace body 1 in the height direction and is distributed at intervals along the length direction of the furnace body 1, the two ends of the upper heating device 2 are supported on the left wall body and the right wall body of the corresponding furnace wall of the furnace body 1 in the position state shown in figure 1, the middle part is positioned in a hearth of the furnace body 1, and the upper smoke exhaust interface 18 is communicated with the hearth; the lower heating device 3 is shown at the lower part of the furnace body 1 in the height direction and is also distributed at intervals along the length direction of the furnace body 1, the two ends of the lower heating device 3 are supported on the left and right wall bodies of the corresponding furnace wall of the furnace body 1 in the position shown in fig. 1, and the middle part is positioned in the hearth of the furnace body 1; a box rod conveying roller 4 is shown, the box rod conveying roller 4 is distributed at intervals along the length direction of the furnace body 1 at a position corresponding to the upper part of the lower heating device 3, two ends of the box rod conveying roller 4 extend out of the furnace body 1 and are rotatably supported on the outer wall of the furnace body 1, and the middle part is also positioned in the hearth; a sagger conveyor roller driving mechanism 5 is shown, which sagger conveyor roller driving mechanism 5 is provided corresponding to one side of the furnace body 1 as the left side shown in fig. 1 and is in transmission connection with the sagger conveyor roller 4; a furnace gas supply means 6 for supplying gas to the aforesaid furnace is shown.

Since the arrangement and the action mechanism of the upper heating device 2, the lower heating device 3 and the sagger conveyor rollers 4 belong to the known technology, for example, refer to the technical information of the roller furnace mentioned in the above background column by the applicant, the applicant does not need to describe any further.

As the technical scheme provided by the utility model: the furnace gas supply mechanism 6 comprises a gas preheating device 61 for preheating gas and introducing the preheated gas into the furnace, and the gas preheating device 61 is arranged on the furnace body 1 and communicated with the furnace.

It has been mentioned above that the length of the whole furnace body 1 is relatively lengthy, and therefore, as can be seen from the schematic view of fig. 2, the number of the above-mentioned gas preheating devices 61 is one group, but the specific number is not limited to ten shown in fig. 2, because only a part of the whole furnace body 1, such as the temperature rising section and the constant temperature section of the furnace body 1, is shown in fig. 2.

Continuing to refer to fig. 1 and also referring to fig. 2, the furnace gas supply mechanism 6 further includes a gas supply fan 62, a gas supply manifold 63, a furnace lower gas inlet pipe 64, a side gas supply pipe 65 and a furnace upper gas inlet pipe 66, the gas supply fan 62 is supported on the terrace along one side of the furnace body 1, i.e. the left side of fig. 1, one end of the gas supply manifold 63 is coupled to the gas supply fan outlet of the gas supply fan 62, the other end (i.e. the end surface) is closed, one end of the furnace lower gas inlet pipe 64 is connected to the side gas supply pipe 65, and the other end of the furnace lower gas inlet pipe 64 is upwardly spaced to form a plurality of furnace lower gas inlet pipe branches 641 such as three (but not limited to three) left, middle and right, the furnace lower gas inlet pipe branches 641 extend into the furnace bottom lining of the furnace and communicate with the furnace, specifically, the furnace lower gas inlet branches 641 are inserted into the furnace through the furnace bottom lining, i.e. at, a lower intake pipe connecting hose 642 for adjusting the position of the lower intake pipe of the furnace and facilitating the assembly is connected in series to the pipe of the lower intake pipe 64 of the furnace, the lower end of the side intake pipe 65 is connected to the middle of the bleed air manifold 63, and a side intake pipe valve 651 and a flow meter 652 are provided in series, the side intake pipe valve 651 is located below the flow meter 652, that is, at the position of the intake end of the flow meter 652, the gas preheating device 61 is connected to the upper end of the side intake pipe 65, the upper intake pipe 66 of the furnace is provided at the upper portion of the furnace body 1 and is connected to the middle of the side intake pipe 65 and communicates with the furnace, and one end of the lower intake pipe 64 of the furnace is connected to the side intake pipe 65 at the position corresponding to the upper portion of the flow meter 652, that is.

The gas preheating device 61 includes a preheater 611, a left preheating gas outlet pipe 612 and a right preheating gas outlet pipe 613, the preheater 611 is fixed on the top of the furnace body 1 through a preheater support seat 6114, but the preheater 611 can also be fixed on other reasonable positions of the furnace body 1, the preheater 611 has a preheater air inlet 6111 and a preheater air outlet 6112, the upper end of the side air supply pipe 65 is connected with the preheater air inlet 6111, a preheater air outlet tee-joint 61121 is connected to the preheater air outlet 6112, the upper end of the left preheating gas outlet pipe 612 is connected with the preheater air outlet tee-joint 61121, the lower end is connected with the left furnace body air inlet port 12, the left furnace body air inlet port 12 is arranged on the left side of the furnace body 1 and is communicated with the furnace chamber, the upper end of the right preheating gas outlet pipe 613 is connected with the preheater air outlet tee-joint 61121, and the lower end is connected with the, the furnace body right air inlet interface 13 is arranged at the right side of the furnace body 1 and is communicated with the hearth; the aforementioned preheater 611 is an electrically heated preheater provided with an electric heating assembly 6113. Because the air supply fan 62 provides clean air and the preheater 611 adopts an electric heating preheater, the cleanliness of preheated air entering the hearth can be guaranteed.

A preheated gas left outlet hose 6121 and a preheated gas left outlet airflow regulating valve 6122 which are used as a lower gas inlet pipe connecting hose 643 are connected in series on the pipeline of the preheated gas left outlet pipe 612; a preheating gas right outlet pipe hose 6131 and a preheating gas right outlet pipe airflow regulating valve 6132 are connected in series with the pipeline of the preheating gas right outlet pipe 613; the furnace body left air inlet port 12 is matched and communicated with the furnace body left air inlet port air cavity housing 121 fixed on the left side of the furnace body 1, and a left air cavity housing air outlet 1211 of the furnace body left air inlet port air cavity housing 121 is communicated with the hearth; the furnace body right air inlet port 13 is matched and communicated with the furnace body right air inlet port air cavity housing 131 fixed on the right side of the furnace body 1, and a right air cavity housing air outlet 1311 of the furnace body right air inlet port air cavity housing 131 is communicated with the hearth.

A preheated air temperature measuring device 61122 is arranged on the three-way joint 61121 at the air outlet of the preheater.

Continuing with fig. 1 and 2, a left upper air inlet port 11a and a left lower air inlet port 11b are provided on the left side of the furnace body 1, a right upper air inlet port 11c and a right lower air inlet port 11d are provided on the right side of the furnace body 1, and the furnace upper air inlet line 66 provided on the upper portion of the furnace body 1 and connected to the middle portion of the side air supply pipe 65 is connected to both the left upper air inlet port 11a and the right upper air inlet port 11c or both the left lower air inlet port 11b and the right lower air inlet port 11 d.

Because the embodiment of the utility model is directed to that furnace body 1 is the roller hearth furnace, therefore when driving the motion of sagger conveying roller 4 by the sagger conveying roller actuating mechanism 5 that will explain in detail below, drive the superpose state by sagger conveying roller 4 and support the sagger on sagger conveying roller 4 with the pile up neatly state promptly and remove to the discharge gate from the feed inlet mentioned above. When the number of stacked layers of sagger, i.e. the stacking number is large (e.g. four layers), i.e. the height is high, the position of the hearth air inlet pipe 664 to be mentioned below is moved upwards between the upper left air inlet port 11a and the upper right air inlet port 11c, or vice versa, when the number of stacked layers of sagger is small (e.g. two layers), the hearth air inlet pipe 664 is moved downwards between the lower left air inlet port 11b and the lower right air inlet port 11 d.

The hearth upper air inlet pipeline 66 includes a three-way connection 661, a left branch pipe 662, a right branch pipe 663, a hearth upper air inlet pipe 664 and a three-way connection air inlet pipe 665, one end of the three-way connection air inlet pipe 665 is connected with the middle part of the side air supply pipe 65, the other end is connected with the three-way connection 661, one end of the left branch pipe 662 is connected with the left upper air inlet port 11a or the left lower air inlet port 11b, the other end extends upwards to the top of the furnace body 1 and is connected with the three-way connection 661, one end of the right branch pipe 663 is connected with the right upper air inlet port 11c or the right lower air inlet port 11d, the other end extends upwards to the top of the furnace body 1 and is connected with the three-way connection 661, the hearth upper air inlet pipe 664 is connected between the left upper air inlet port 11a and the right upper air inlet port 11c or between the left lower air inlet port 11b and, a furnace upper intake pipe outlet port 6641 is provided at a downward side of the furnace upper intake pipe 664 at intervals corresponding to the region of the furnace.

As can be seen from the above description of the stacking height of the saggars by the applicant, when the stacking height is high, i.e. the number of saggar layers is large, then one end of the left shunt tube 662 and one end of the right shunt tube 663 are respectively connected with the left upper air inlet port 11a and the right upper air inlet port 11c, and vice versa.

A left shunt tube hose 6621 is connected in series with the pipeline of the left shunt tube 662, and a right shunt tube hose 6631 is connected in series with the pipeline of the right shunt tube 663.

Referring to fig. 2 in conjunction with fig. 1, fig. 2 shows a lower exhaust duct 7, a gate valve 71 is disposed on the lower exhaust duct 7, the lower exhaust duct 7 is communicated with a lower flue 19 formed on the bottom lining, and the lower flue 19 is communicated with the furnace chamber through a lower exhaust opening 191. The lower smoke exhaust pipe 7 extends upward and is connected to the smoke exhaust main pipe 8.

Referring to fig. 1, a motor bracket 14, a driving wheel bracket 15 and a sagger conveying roller driving bracket 16 are arranged at the left side of the furnace body 1 and at the position corresponding to the sagger conveying roller driving mechanism 5 in driving connection with the sagger conveying roller 4, the motor bracket 14 is fixed with the left side of a furnace body supporting chassis 17 at the bottom of the furnace body 1, the driving wheel bracket 15 is fixed at the left side of the furnace body 1 and corresponds to the upper part of the motor bracket 14, and the sagger conveying roller driving bracket 16 is also fixed at the left side of the furnace body 1 and corresponds to the upper part of the driving wheel bracket 15; the sagger conveying roller driving mechanisms 5 are distributed on the motor bracket 14, the driving wheel bracket 15 and the sagger conveying roller driving bracket 16.

The sagger conveyor roller driving mechanism 5 comprises a motor 51, a motor driving sprocket 52, a transition transmission sprocket shaft seat 53, a transition transmission sprocket 54, a reduction box 55, a reduction box power input sprocket 56, a reduction box power output sprocket 57, a sagger conveyor roller driving sprocket 58, a first transmission chain I59 a, a second transmission chain II 59b and a third transmission chain III 59c, wherein the motor 51 is arranged on the motor support 14, the motor driving sprocket 52 is fixed on a motor power output shaft 511 of the motor 51, the transition transmission sprocket shaft seat 53 is arranged on the transmission wheel support 15 in a matched state, the transition transmission sprocket 54 is a double-row sprocket and is fixed on a transition transmission sprocket shaft 541, the transition transmission sprocket shaft 541 is rotatably supported on the transition transmission sprocket shaft seat 53, the reduction box 55 is fixed on the sagger driving support 16, the reduction box power input sprocket 56 is fixed on the reduction box power input shaft of the reduction box 55, the reduction gearbox power output chain wheel 57 is fixed on the reduction gearbox power output shaft of the reduction gearbox 55, the sagger conveying roller driving chain wheel 58 is a duplex chain wheel and is fixed at the left end of the sagger conveying roller 4, the sagger conveying roller driving chain wheels 58 on the adjacent sagger conveying rollers 4 are in transmission connection through a transition chain, the lower end of a first transmission chain I59 a is sleeved on the motor driving chain wheel 52, the upper end of the first transmission chain I is sleeved on the transition transmission chain wheel 54, the lower end of a second transmission chain II 59b is sleeved on the transition transmission chain wheel 54, the upper end of the second transmission chain II is sleeved on the reduction gearbox power input chain wheel 56, the upper end of a third transmission chain III 59c is sleeved on the reduction gearbox power output chain wheel 57, and the lower end of the third transmission chain. Preferably, a chain tension sprocket 59d is also rotatably provided on the sagger conveyor roller driving bracket 16 at a position corresponding to the middle of the third driving chain iii 59 c.

The motor 51 works, the motor power output shaft 511 drives the motor driving chain wheel 52, the motor driving chain wheel 52 drives the transition driving chain wheel 54 (double-row chain wheel) through the first transmission chain I59 a, the transition driving chain wheel 54 drives the reduction box power input chain wheel 56 through the second transmission chain II 59b, the reduction box power output shaft of the reduction box 55 drives the reduction box power output chain wheel 57 fixed on the reduction box power input chain wheel, the third transmission chain III 59c drives the sagger conveying roller driving chain wheel 58, the sagger conveying roller driving chain wheel 58 drives the sagger conveying shaft 4, because the sagger conveying roller driving chain wheels 58 are double-row chain wheels and because the sagger conveying roller driving chain wheels 58 on two adjacent sagger conveying rollers 4 are connected by a transition chain, thus, all the sagger conveying rollers 4 can move simultaneously and synchronously to drive and convey the saggers from the feeding port, namely the feeding port, to the discharging port.

The applicant needs to state that: the driving method of the sagger conveyor rollers 4 by the roller furnace is not the above-mentioned chain wheel driving structure, and for example, a gear driving structure may be adopted.

In the above process, the upper and lower heating devices 2 and 3 are both in a heating state, that is, the upper and lower heating rods are in a working state, and the furnace air supply mechanism 6 is also in a working state, air required by the process is introduced into the air guide main pipe 63 by the air supply fan 62, the air is introduced into the lower part of the furnace through the lower furnace air inlet pipe 64 by the side air supply pipe 65, and the air is introduced into the upper part of the furnace through the upper furnace air inlet pipe air outlet hole 6641 on the upper furnace air inlet pipe 664 of the furnace air inlet pipe 66. When the furnace is to be preheated before the furnace is started, then the gas introduced by the side gas supply pipe 65 is preheated by the preheater 611 and the preheated gas preheated by the preheater 611 is introduced into the furnace from the left and right sides of the furnace body 1 (taking the position state in fig. 1 as an example) by the preheated gas left outlet pipe 612 and the preheated gas right outlet pipe 613.

The applicant needs to explain that: in most cases, i.e. for most of the products to be sintered, the gas introduced into the furnace from the left and right outlets 612, 613 of the preheating gas should be preheated to make the gas in the furnace in a hot state, so as to avoid the products from contacting with the cold gas during sintering and prevent the products from cracking or deforming. In view of the foregoing, the preheater 611 is in an energized state as long as there is product in the furnace under normal conditions. Of course, the opening degree or even the short-term closing (i.e. short-term closing) of the gas flow regulating valves 6122 and 6123 of the preheating gas left and right outlet pipes is determined by a user according to the sintering process requirement of the product and the temperature change in the furnace, i.e. adjusted according to the requirement.

To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.

Claims (10)

1. An electronic kiln with a gas preheating function comprises a kiln body (1), wherein an upper smoke discharging interface (18) is arranged at the top of the kiln body (1) and at the position corresponding to each temperature zone, an upper smoke discharging pipe (181) is connected to the upper smoke discharging interface (18) in a matching mode, and the upper smoke discharging pipe (181) is connected with a smoke discharging main pipe (8); the upper heating devices (2) are positioned at the upper part of the furnace body (1) in the height direction and are distributed at intervals along the length direction of the furnace body (1), the two ends of each upper heating device (2) are supported on the corresponding furnace wall of the furnace body (1), the middle part of each upper heating device is positioned in a hearth of the furnace body (1), and the upper smoke exhaust interfaces (18) are communicated with the hearths; the lower heating devices (3) are positioned at the lower part of the furnace body (1) in the height direction and are also distributed at intervals along the length direction of the furnace body (1), the two ends of each lower heating device (3) are supported on the corresponding furnace walls of the furnace body (1), and the middle part of each lower heating device is positioned in the hearth of the furnace body (1); sagger conveying rollers (4), the sagger conveying rollers (4) are distributed at intervals along the length direction of the furnace body (1) at the position corresponding to the upper part of the lower heating device (3), two ends of the sagger conveying rollers (4) extend out of the furnace body (1) and are rotatably supported on the outer wall of the furnace body (1), and the middle part is also positioned in the hearth; the sagger conveying roller driving mechanism (5), the sagger conveying roller driving mechanism (5) is arranged corresponding to one side of the furnace body (1) and is in transmission connection with the sagger conveying roller (4); the furnace gas supply mechanism (6) is used for supplying gas to the furnace, and is characterized in that the furnace gas supply mechanism (6) comprises a gas preheating device (61) which is used for preheating gas and leading the preheated gas into the furnace, and the gas preheating device (61) is arranged on the furnace body (1) and communicated with the furnace.

2. The electronic kiln with the gas preheating function according to claim 1, wherein the furnace gas supply mechanism (6) further comprises a gas supply fan (62), a gas guide header pipe (63), a furnace lower gas inlet pipe (64), a side gas supply pipe (65) and a furnace upper gas inlet pipe (66), the gas supply fan (62) is supported on the terrace along with one side of the furnace body (1), one end of the gas guide header pipe (63) is connected with a gas supply fan outlet of the gas supply fan (62) in a matching manner, the other end of the gas guide header pipe is closed, one end of the furnace lower gas inlet pipe (64) is connected with the side gas supply pipe (65), the other end of the furnace lower gas inlet pipe (64) is upwardly spaced to form a plurality of furnace lower gas inlet pipe branches (641), the furnace lower gas inlet pipe branches (641) extend into a furnace bottom lining of the furnace and are communicated with the furnace, a lower gas inlet pipe connecting hose (642) is connected in series with a pipeline of the furnace lower, the lower extreme of side air supply pipe (65) is connected with the middle part of bleed air house steward (63) to be provided with one side air supply pipe valve (651) and have concatenated flowmeter (652), side air supply pipe valve (651) are located the below of flowmeter (652), gas preheating device (61) are connected with the upper end of side air supply pipe (65), and gas piping (66) set up on the furnace body (1) the upper portion and with the middle part of side air supply pipe (65) is connected and with the furnace communicates with each other, the one end of intake pipe (64) is in corresponding to under the furnace position and side air supply pipe (65) of the top of flowmeter (652) are connected.

3. The electronic kiln with the gas preheating function according to claim 2, wherein the gas preheating device (61) comprises a preheater (611), a left preheated gas outlet pipe (612) and a right preheated gas outlet pipe (613), the preheater (611) is fixed at the top of the kiln body (1), the preheater (611) has a preheater air inlet (6111) and a preheater air outlet (6112), the upper end of the side air supply pipe (65) is connected with the preheater air inlet (6111), a preheater air outlet three-way joint (61121) is coupled to the preheater air outlet (6112), the upper end of the left preheated gas outlet pipe (612) is coupled to the preheater air outlet three-way joint (61121), the lower end is coupled to the left furnace body air inlet port (12), and the left furnace body air inlet port (12) is arranged at the left side of the kiln body (1) and is communicated with the kiln chamber, the upper end of the preheated gas right outlet pipe (613) is matched and connected with a three-way joint (61121) at the gas outlet of the preheater, the lower end of the preheated gas right outlet pipe is matched and connected with a right gas inlet interface (13) of the furnace body, and the right gas inlet interface (13) of the furnace body is arranged at the right side of the furnace body (1) and communicated with the hearth; the preheater (611) is an electrically heated preheater provided with an electrical heating assembly (6113).

4. The electronic kiln with the gas preheating function according to claim 3, wherein a preheating gas left outlet hose (6121) and a preheating gas left outlet airflow regulating valve (6122) are connected in series with a pipeline of the preheating gas left outlet (612); a preheating gas right outlet pipe hose (6131) and a preheating gas right outlet pipe airflow regulating valve (6132) are connected in series on the pipeline of the preheating gas right outlet pipe (613); the furnace body left air inlet interface (12) is matched and communicated with a furnace body left air inlet interface air cavity housing (121) fixed on the left side of the furnace body (1), and a left air cavity housing air outlet (1211) of the furnace body left air inlet interface air cavity housing (121) is communicated with the hearth; the furnace body right air inlet interface (13) is matched and communicated with a furnace body right air inlet interface air cavity housing (131) fixed on the right side of the furnace body (1), and a right air cavity housing air outlet (1311) of the furnace body right air inlet interface air cavity housing (131) is communicated with the hearth.

5. The electronic kiln with gas preheating function as claimed in claim 3, wherein a preheating gas temperature detector (61122) is arranged on the three-way joint (61121) at the outlet of the preheater.

6. The electronic kiln with gas preheating function according to claim 2, characterized in that a left upper gas inlet (11a) and a left lower gas inlet (11b) are provided on the left side of the kiln body (1), a right upper gas inlet (11c) and a right lower gas inlet (11d) are provided on the right side of the kiln body (1), and the kiln upper gas inlet pipeline (66) provided on the upper portion of the kiln body (1) and connected to the middle portion of the side gas supply pipe (65) is connected to both the left upper gas inlet (11a) and the right upper gas inlet (11c) or both the left lower gas inlet (11b) and the right lower gas inlet (11 d).

7. The electronic kiln having a gas preheating function according to claim 6, wherein the upper furnace gas inlet line (66) comprises a three-way connection head (661), a left shunt tube (662), a right shunt tube (663), an upper furnace gas inlet line (664) and a three-way connection gas inlet line (665), one end of the three-way connection gas inlet line (665) is connected to the middle of the side gas supply pipe (65), the other end is connected to the three-way connection head (661), one end of the left shunt tube (662) is connected to the upper left gas inlet port (11a) or the lower left gas inlet port (11b), and the other end extends upward to the top of the furnace body (1) and is connected to the three-way connection head (661), one end of the right shunt tube (663) is connected to the upper right gas inlet port (11c) or the lower right gas inlet port (11d), and the other end extends upward to the top of the furnace body (1) and is connected to the three-way connection, the hearth upper air inlet pipe (664) is connected between the left upper air inlet port (11a) and the right upper air inlet port (11c) or between the left lower air inlet port (11b) and the right lower air inlet port (11d) in the hearth, and hearth upper air inlet pipe outlet holes (6641) are arranged on one downward side of the hearth upper air inlet pipe (664) and in the area corresponding to the hearth at intervals.

8. The electronic kiln with gas preheating function as claimed in claim 7, wherein a left shunt tube hose (6621) is connected in series with the pipeline of the left shunt tube (662), and a right shunt tube hose (6631) is connected in series with the pipeline of the right shunt tube (663).

9. The electronic kiln with gas preheating function according to claim 1, characterized in that a motor bracket (14), a driving wheel bracket (15) and a sagger conveyor roller driving bracket (16) are provided at the left side of the furnace body (1) and at the position corresponding to the sagger conveyor roller driving mechanism (5) in driving connection with the sagger conveyor roller (4), the motor bracket (14) is fixed with the left side of the furnace body supporting chassis (17) at the bottom of the furnace body (1), the driving wheel bracket (15) is fixed at the left side of the furnace body (1) and corresponds to the upper part of the motor bracket (14), the sagger conveyor roller driving bracket (16) is also fixed at the left side of the furnace body (1) and corresponds to the upper part of the driving wheel bracket (15); the sagger conveying roller driving mechanisms (5) are distributed on the motor support (14), the driving wheel support (15) and the sagger conveying roller driving support (16).

10. The electronic kiln with gas preheating function according to claim 9, wherein the sagger conveyor roller driving mechanism (5) comprises a motor (51), a motor driving sprocket (52), a transition transmission sprocket seat (53), a transition transmission sprocket (54), a reduction box (55), a reduction box power input sprocket (56), a reduction box power output sprocket (57), a sagger conveyor roller driving sprocket (58), a first transmission chain I (59a), a second transmission chain II (59b) and a third transmission chain III (59c), the motor (51) is arranged on the motor support (14), the motor driving sprocket (52) is fixed on a motor power output shaft (511) of the motor (51), the transition transmission sprocket seat (53) is arranged on the transmission wheel support (15) in a paired state, the transition transmission sprocket (54) is a double-row sprocket and is fixed on the transition transmission sprocket shaft (541), the transition transmission chain wheel shaft (541) is rotatably supported on the transition transmission chain wheel shaft seat (53), the reduction box (55) is fixed on the sagger conveying roller driving support (16), the reduction box power input chain wheel (56) is fixed on the reduction box power input shaft of the reduction box (55), the reduction box power output chain wheel (57) is fixed on the reduction box power output shaft of the reduction box (55), the sagger conveying roller driving chain wheel (58) is a double-row chain wheel and is fixed at the left end of the sagger conveying roller (4), the sagger conveying roller driving chain wheels (58) on adjacent sagger conveying rollers (4) are in transmission connection by a transition chain, the lower end of a first transmission chain I (59a) is sleeved on the motor driving chain wheel (52), the upper end is sleeved on the transition transmission chain wheel (54), the lower end of a second transmission chain II (59b) is sleeved on the transition transmission chain wheel (54), the upper end of the third transmission chain III (59c) is sleeved on the power input chain wheel (56) of the reduction gearbox, the upper end of the third transmission chain III is sleeved on the power output chain wheel (57) of the reduction gearbox, and the lower end of the third transmission chain III is sleeved on the sagger conveying roller driving chain wheel (58).

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