CN205425798U - A sealed kiln car that goes up and down for direct transferring lead energy -concerving and environment -protective type nitrogenize kiln - Google Patents

Abstract

A sealed kiln car that goes up and down for direct transferring lead energy -concerving and environment -protective type nitrogenize kiln, including last backup pad and bottom suspension fagging, go up the corresponding fixed block that is equipped with of four angle departments of backup pad lower surface, the low slope in high back set up before every fixed block lower surface all was, under bracing prelaminar part and rear portion be the fixedly connected with axletree respectively, both ends are all rotated to be connected with and are increaseed the wheel about every axletree, it lies in every wheel of heightening round outside to rotate to be connected with on the axletree, wheel roll connection is establishing on subaerial track along the front and back horizontal direction, it is equipped with the power drive device to go up backup pad front end middle part, the power drive device includes the shell body, the worm wheel, worm and lead screw, the worm wheel is located the shell body, the lead screw pass worm wheel center and with worm wheel threaded connection, bottom suspension fagging front end level is provided with the connecting plate, shell body bottom fixed connection is at the connecting plate upper surface. The utility model has the advantages of being simple in structure and convenient in operation, the reliable operation, production efficiency can be improved and can height -adjusting become sealed with the kiln bodily form.

Description

The lifting leading energy saving and environment friendly nitridation kiln for direct transferring seals kiln car

Technical field

This utility model belongs to technical field of fire resistant material production, particularly relates to a kind of lifting leading energy saving and environment friendly nitridation kiln for direct transferring and seals kiln car.

Background technology

Silicon nitride combined silicon carbide material is a kind of novel high grade refractory, and quality is hard, and Mohs' hardness is about 9, belongs to hardened material, be only second to diamond in nonmetallic materials；Normal temperature strength is high, under 1200-1400 DEG C of high temperature, almost keeps intensity and the hardness of time identical with room temperature, and maximum service temperature can reach 1650-1750 DEG C；Thermal coefficient of expansion is little, and thermal conductivity is high, is not likely to produce thermal stress, has good thermal shock resistance, and service life is long, and high temperature resists compacted ability strong, corrosion-resistant, the coldest resistance to very hot, antioxidation, easily makes the high satisfactory goods of dimensional accuracy.Kiln many employings electrical kiln of existing production silicon nitride combined silicon carbide material and shuttle kiln, shuttle kiln kiln car is built case and puts into product blank, and seal, use the mode building case, there is wall thick, heat conduction is slow and takes the shortcomings such as the energy, and after needing long-time cooling, people just can enter to take out product, labor intensity is big, repeatedly open top cover, pressure in kiln body is reduced, product quality is the highest, the kiln energy consumption of the most existing production silicon nitride combined silicon carbide material is the highest, capacity usage ratio is low, thermal losses is serious, make production cost high, heat skewness in firing chamber, make product defect rate high.

Utility model content

This utility model is in order to solve weak point of the prior art, it is provided that a kind of simple in construction, easy to operate, reliable operation, can improve production efficiency and can regulate height and form the lifting leading energy saving and environment friendly nitridation kiln for direct transferring sealed with kiln body and seal kiln car.

nullFor solving above-mentioned technical problem，This utility model adopts the following technical scheme that the lifting leading energy saving and environment friendly nitridation kiln for direct transferring seals kiln car，Including horizontally disposed upper backup pad and lower supporting plate，It is correspondingly provided with fixed block at four angles of upper backup pad lower surface，Each fixed block lower surface is all arranged in low dip after front height，Lower supporting plate front and rear is fixedly connected with axletree along left and right horizontal direction respectively，Both ends, each axletree left and right are all rotatably connected to heighten wheel，Each wheel top all correspondences of heightening are connected with the lower surface rolling of a fixed block，It is rotatably connected on axletree be positioned at each wheel heightened outside wheel，Wheel rolling is connected to be located on ground track along anterior-posterior horizontal direction，Upper backup pad front center is provided with Power Drive Unit，Power Drive Unit includes shell body、Worm gear、Worm screw and leading screw，Upper backup pad front end center is provided with bearing block，Leading screw is horizontally disposed with along the longitudinal direction and leading screw rear end thereof is connected in bearing block，Worm gear is positioned at shell body，Leading screw through worm gear center and is threadeded with worm gear，Worm screw vertically extend in shell body and with worm gear engaged transmission，Stopper slot is the most vertically offered on shell body leading flank and trailing flank，Leading screw is through the stopper slot on shell body，Lower supporting plate front end has been horizontally disposed with connecting plate，Connecting plate upper surface it is fixedly connected on bottom shell body.

Upper backup pad sidepiece bottom surface is set to ramp structure, and upper backup pad upper surface is equipped with the thermal insulation layer being built into by refractory brick, and upper backup pad forward edge and posterior edges are provided with simultaneously heat insulation for fire door insulated wall the most in left-right direction.

nullUse technique scheme，Direct transfer and lead energy saving and environment friendly nitridation kiln and also include being arranged on ground main kiln body along anterior-posterior horizontal direction and be arranged on below ground and the secondary kiln body that be positioned at main kiln body side parallel with main kiln body length direction，Main kiln body includes that vertical cross-section is rectangle and the steel plate layer of the domed structure of section-top、Heat-preservation cotton layer and fire brick layer，Steel plate layer、Heat-preservation cotton layer and fire brick layer set gradually from the outside to the core，Main kiln body leading flank and trailing flank are respectively arranged with wicket，The left and right sides of main kiln body front and rear is all vertically installed with the first refractory brickwork that two sides is parallel to each other，First refractory brickwork upwards sequentially passes through fire brick layer、Heat-preservation cotton layer and steel plate layer，The domes at steel plate layer top and the junction of the first refractory brickwork connect by connecting bolt is fixing，It is positioned at correspondence at four angles in main kiln body and is vertically provided with four fire-boxes，Each fire-box all includes vertically disposed air exhaust duct and air intake duct，Air exhaust duct and air intake duct are by separating about vertically disposed second refractory brickwork，Air exhaust duct is near main kiln body center，Air intake duct is away from main kiln body center，The left side of main kiln body internal upper part and right side are respectively equipped with a heater，The front-end and back-end of each heater are connected with a fire-box on front side of main kiln body and a fire-box on rear side of main kiln body respectively，Two sides is provided with kiln car between the first refractory brickwork bottom，Two heaters are positioned at both sides above kiln car，On the left of main kiln body and right side is equipped with some nitrogen ascending pipes and vacuum-pumping tube，Each nitrogen ascending pipe is all disposed on main kiln body lower sidewall along anterior-posterior horizontal direction，Each vacuum-pumping tube is all disposed in the middle part of main kiln body sidewall along anterior-posterior horizontal direction，All nitrogen ascending pipes are all internal with main kiln body with vacuum-pumping tube to be connected；

nullSecondary kiln body includes that vertical cross-section is rectangle and cross section dual-side and top margin is outer kiln body and the inner kiln tube of arch，Outer kiln body and inner kiln tube are built into by refractory brick，Outer gas channel is formed between outer kiln body inwall and inner kiln tube outer wall，Interior gas channel it is provided with along the longitudinal direction in inner kiln tube，The leading flank of outer kiln body uses refractory brickwork closure，The trailing flank of inner kiln tube uses refractory brickwork closure，Interior gas channel front end is connected with being located at ground air exhauster by pipeline，Upper inside wall in outer kiln body is provided with heat exchanger，Inner kiln tube left side wall bottom is the spaced apart connected entrance being communicated with outer gas channel and interior gas channel along anterior-posterior horizontal direction，Outer kiln body right side wall top offers two air vents，Two air vents are arranged along interval, anterior-posterior horizontal direction，Each air vent outer end is connected to first airflow line，Offer two the first connectors along airflow direction on every first airflow line，Four the first connector correspondences are connected by the air intake duct lower end of pipeline and four fire-boxes，Inner kiln tube right side wall bottom offers two bleeding points being positioned at below air vent，Two bleeding points are arranged along interval, anterior-posterior horizontal direction，Each bleeding point outer end is connected to second airflow line，Offer two the second connectors along airflow direction on every second airflow line，Four the second connector correspondences respectively are connected by the air exhaust duct lower end of an exhaust tube and four fire-boxes，On two exhaust tubes of air exhauster, a control valve it is respectively equipped with along airflow direction.

nullHeater include three layers all along anterior-posterior horizontal direction arrange add heat pipe，Three layers add heat pipe and are distributed from top to bottom，Every layer adds heat pipe and is formed by least two coaxial corresponding bodys arranged that seal，In adjacent two bodys, a body is plugged in another root body，Every layer of equal sealed card in front-end and back-end adding heat pipe is connected to burner block，Between two body junctions、Burner block and adding all is sealed by high temperature minuteness between heat pipe junction，Burner block is divided into clamping between upper and lower two halves and upper and lower two halves，Two pores are offered respectively on each burner block，It is respectively equipped with burner and flame-observing hole in every layer of burner block adding heat pipe two ends，Burner and flame-observing hole with one end are all spaced and interlaced arrangement，Every layer adds and is provided with bracing frame between heat pipe，Bracing frame is located on main kiln body inwall away from side, main kiln body center is fixing，The equal level in bracing frame top and bottom offers the semi-circular recesses suitable with adding heat pipe cylindrical，It is equipped with holding device away from the one end adding heat pipe on each burner block，The inlet end of each burner is connected to natural gas tube and warm-air pipe，The heat outlet of heat exchanger is connected with the air inlet of warm-air pipe.

It is positioned at the holding device on front side of main kiln body and includes fixed plate, sleeve pipe and location-plate, fixed plate is fixedly connected on sleeve pipe front end, compression spring it is provided with in sleeve pipe, fixed plate center is threaded hold-down bolt, hold-down bolt rear end is fixedly connected with push pedal, push pedal is slidably connected in sleeve pipe, compression spring front end is fixedly connected on push pedal trailing flank, location-plate leading flank center is fixedly connected with the locating piece extending in sleeve pipe, compression spring rear end be enclosed within locating piece and with the top press-fit of location-plate leading flank, location-plate trailing flank is fixedly connected on burner block away from the one end adding heat pipe.

The first refractory brickwork bottom, every face is provided with steel bracing plate, set on the ground bottom steel bracing plate, each steel bracing plate upper end the most all offers groove, the upper backup pad left and right sides is respectively protruding into from front to back in a groove, the contact surface of bottom portion of groove is set to the inclined-plane paralleled with the ramp structure of upper backup pad sidepiece bottom surface, the bottom of groove is provided with elastic refractory support, it is positioned at upper backup pad on the first refractory brickwork of every face and is arranged over the first projection, two ends, thermal insulation layer left and right are equipped with second projection, each second projection lower surface is corresponding to a first projection upper surface matched in clearance of homonymy.

Use technique scheme, direct transfer and lead energy saving and environment friendly nitridation kiln and have the advantage that

null1、In use，First on the upper backup pad of kiln car, lay the thermal insulation layer being built into by refractory brick，Silicon nitride combined silicon carbide product blank to be processed is placed on thermal insulation layer，Kiln car is entered in main kiln body by track，The upper backup pad two ends of kiln car are inserted in the groove that bracing members is lived，Rotated by driven by motor worm screw，Worm gear wheel also drives leading screw to be moved down by the stopper slot on shell body along worm screw，Owing to leading screw is threadeded with worm gear，Worm gear wheel makes leading screw promote upper backup pad to be moved rearwards by，Heighten and take turns the hypotenuse structure rolls forward along fixed block，So that upper backup pad falls，Upper backup pad contacts formation inclined-plane and coordinates with the bottom portion of groove of steel bracing plate，Thus form sealing，Then wicket is shut，By the vacuum pump inlet communication by pipeline with vacuum-pumping tube pipe，Start vacuum pump to carrying out evacuation in main kiln body；When silicon nitride combined silicon carbide product blank is after roasting, inverted by driven by motor worm screw, worm gear is rotated backward and drives leading screw to be moved up by the stopper slot on shell body along worm screw, owing to leading screw is threadeded with worm gear, worm gear reversion makes leading screw pull upper backup pad to move forward, thus heighten the hypotenuse structure taken turns along fixed block and roll backward, so that upper backup pad rises, kiln car is pulled out；This utility model is easy and simple to handle, reduces operation easier so that production efficiency is improved；

null2、During roasting，The gaseous mixture of natural gas and air is lighted and flame within adding heat pipe through burner，The temperature liter adding around heat pipe is made to reach predetermined temperature，By nitrogen ascending pipe nitrogen injection in main kiln body，Silicon nitride combined silicon carbide product blank on kiln car is between the heater on both sides，Thus start roasting，During roasting，Open air exhauster by the high-temp waste gas run out of around heater through air exhaust duct and pipeline，The second airflow line is entered into from the second connector，Entered by bleeding point in the outer gas channel of secondary kiln body，Through heat exchanger effect，High-temp waste gas in outer gas channel enters the first airflow line through air vent，Enter in air intake duct through the first connector and pipeline，Form high temperature gas flow and play heat effect，Whole process is the process of a continuous circulation，Waste gas can be made full use of，Used heat is recirculated utilize，Improve heat utilization efficiency，Reduce production cost；Can by control valve control enter along airflow direction in two exhaust tubes of air exhauster the flow of air-flow so that respectively enter the air flow rate in four exhaust tubes identical, recycling waste heat keep balance so that the temperature in main kiln body is more stable；

3, in whole roasting process, owing to main kiln body temperature is the highest, add heat pipe can expand, or after roasting terminates, main kiln body temperature is reduced by height, can make to add heat pipe to shrink, now by the hold-down bolt turned on holding device thus promote location-plate to hold out against burner block and extruding adds heat pipe so that heater is more stable；It is provided with heater in the left side of main kiln body internal upper part and right side, and heater is disposed as three layers and adds heat pipe, uses said structure heat conduction efficiency high so that in main kiln body, Temperature Distribution is more uniform so that the temperature in main kiln body keeps constant.

Accompanying drawing explanation

Fig. 1 is the structural representation direct transferring and leading energy saving and environment friendly nitridation kiln；

Fig. 2 is main kiln body front portion or the structural representation at rear portion in Fig. 1；

Fig. 3 is the structural representation of secondary kiln body in Fig. 1；

Fig. 4 is the lateral cross section sectional view in Fig. 1 in the middle part of main kiln body；

Fig. 5 is the side-looking structural representation of main kiln body in Fig. 1；

Fig. 6 is the plan structure schematic diagram of main kiln body in Fig. 1；

Fig. 7 is the structural representation of holding device in Fig. 5；

Fig. 8 is structural representation of the present utility model；

Fig. 9 is side-looking structural representation of the present utility model.

Detailed description of the invention

nullAs shown in figs 1-9，Direct transfer and lead energy saving and environment friendly nitridation kiln，Including the main kiln body 59 being arranged on ground 54 along anterior-posterior horizontal direction be arranged on below ground 54 and the secondary kiln body 60 that be positioned at main kiln body 59 side parallel with main kiln body 59 length direction，Main kiln body 59 includes that vertical cross-section is rectangle and the steel plate layer 1 of the domed structure of section-top、Heat-preservation cotton layer 2 and fire brick layer 3，Steel plate layer 1、Heat-preservation cotton layer 2 and fire brick layer 3 set gradually from the outside to the core，Main kiln body 59 leading flank and trailing flank are respectively arranged with wicket，The left and right sides of main kiln body 59 front and rear is all vertically installed with the first refractory brickwork 4 that two sides is parallel to each other，First refractory brickwork 4 upwards sequentially passes through fire brick layer 3、Heat-preservation cotton layer 2 and steel plate layer 1，Domes and first refractory brickwork 4 at steel plate layer 1 top connect by connecting bolt 5 is fixing，It is positioned at correspondence at four angles in main kiln body 59 and is vertically provided with four fire-boxes，Each fire-box all includes vertically disposed air exhaust duct 6 and air intake duct 7，Separated by vertically disposed second refractory brickwork about 8 between air exhaust duct 6 and air intake duct 7，Air exhaust duct 6 is near main kiln body 59 center，Air intake duct 7 is away from main kiln body 59 center，Left side and the right side of main kiln body 59 internal upper part are respectively equipped with a heater 9，The front-end and back-end of each heater 9 are connected with a fire-box on front side of main kiln body 59 and a fire-box on rear side of main kiln body 59 respectively，Two sides is provided with kiln car 10 between the first refractory brickwork 4 bottom，Two heaters 9 are positioned at both sides above kiln car 10，On the left of main kiln body 59 and right side is respectively connected with some nitrogen ascending pipes 64 and vacuum-pumping tube 65，Each nitrogen ascending pipe 64 is all disposed on main kiln body 59 lower sidewall along anterior-posterior horizontal direction，Each vacuum-pumping tube 65 is all disposed in the middle part of main kiln body 59 sidewall along anterior-posterior horizontal direction，All nitrogen ascending pipes 64 are all internal with main kiln body 59 with vacuum-pumping tube 65 to be connected；

nullSecondary kiln body 60 includes that vertical cross-section is rectangle and cross section dual-side and top margin is outer kiln body 11 and the inner kiln tube 12 of arch，Outer kiln body 11 and inner kiln tube 12 are built into by refractory brick，Outer gas channel 13 is formed between outer kiln body 11 inwall and inner kiln tube 12 outer wall，Interior gas channel 14 it is provided with along the longitudinal direction in inner kiln tube 12，The leading flank of outer kiln body 11 uses refractory brickwork closure，The trailing flank of inner kiln tube 12 uses refractory brickwork closure，Interior gas channel 14 front end is connected with the air exhauster being located on ground 54 by pipeline，Upper inside wall in outer kiln body 11 is provided with heat exchanger 15，Inner kiln tube 12 left side wall bottom is the spaced apart connected entrance 16 being communicated with outer gas channel 13 and interior gas channel 14 along anterior-posterior horizontal direction，Outer kiln body 11 right side wall top offers two air vents 17，Two air vents 17 are arranged along interval, anterior-posterior horizontal direction，Each air vent 17 outer end is connected to first airflow line 18，Offer two the first connectors 19 along airflow direction on every first airflow line 18，Four the first connector 19 correspondences are connected by air intake duct 7 lower end of pipeline and four fire-boxes，Inner kiln tube 12 right side wall bottom offers two bleeding points being positioned at below air vent 17 20，Two bleeding points 20 are arranged along interval, anterior-posterior horizontal direction，Each bleeding point 20 outer end is connected to second airflow line 21，Offer two the second connectors 22 along airflow direction on every second airflow line 21，Four the second connector 22 correspondences respectively are connected with air exhaust duct 6 lower end of four fire-boxes by an exhaust tube 61，On two exhaust tubes 61 of air exhauster, a control valve 23 it is respectively equipped with along airflow direction.

nullHeater 9 include three layers all along anterior-posterior horizontal direction arrange add heat pipe 24，Three layers add heat pipe 24 and are distributed from top to bottom，Every layer adds heat pipe 24 and is formed by least two coaxial corresponding bodys 62 arranged that seal，In adjacent two bodys 62, a body 62 is plugged in another root body 62，Every layer of equal sealed card in front-end and back-end adding heat pipe 24 is connected to burner block 25，Between two body 62 junctions、Burner block 25 and add between heat pipe 24 junction is all sealed by high temperature cotton 26，Burner block 25 is divided into clamping between upper and lower two halves and upper and lower two halves，Two pores 27 are offered respectively on each burner block 25，It is respectively equipped with burner 28 and flame-observing hole 29 in every layer of burner block 25 adding heat pipe 24 two ends，Burner 28 and flame-observing hole 29 with one end are all spaced and interlaced arrangement，Every layer adds and is provided with bracing frame 30 between heat pipe 24，Bracing frame 30 is located on main kiln body 59 inwall away from side, main kiln body 59 center is fixing，The equal level in bracing frame 30 top and bottom offers the semi-circular recesses suitable with adding heat pipe 24 cylindrical，It is equipped with holding device 31 away from the one end adding heat pipe 24 on each burner block 25，The inlet end of each burner 28 is connected to natural gas tube 32 and warm-air pipe 33，The heat outlet of heat exchanger 15 is connected with the air inlet of warm-air pipe 33.

It is positioned at the holding device 31 on front side of main kiln body 59 and includes fixed plate 34, sleeve pipe 35 and location-plate 36, fixed plate 34 is fixedly connected on sleeve pipe 35 front end, compression spring 37 it is provided with in sleeve pipe 35, fixed plate 34 center is threaded hold-down bolt 38, hold-down bolt 38 rear end is fixedly connected with push pedal 39, push pedal 39 is slidably connected in sleeve pipe 35, compression spring 37 front end is fixedly connected on push pedal 39 trailing flank, location-plate 36 leading flank center is fixedly connected with the locating piece 40 extending in sleeve pipe 35, compression spring 37 rear end be enclosed within locating piece 40 and with the top press-fit of location-plate 36 leading flank, location-plate 36 trailing flank is fixedly connected on burner 28 brick 25 away from the one end adding heat pipe 24.

nullKiln car 10 includes horizontally disposed upper backup pad 41 and lower supporting plate 42，It is correspondingly provided with fixed block 43 at four angles of upper backup pad 41 lower surface，Each fixed block 43 lower surface is all arranged in low dip after front height，Lower supporting plate 42 front and rear is fixedly connected with axletree 44 along left and right horizontal direction respectively，Each axletree about 44 both ends are all rotatably connected to heighten wheel 45，Each wheel 45 tops all correspondences of heightening are connected with the lower surface rolling of a fixed block 43，It is rotatably connected on axletree 44 be positioned at each wheel 46 heightened outside wheel 45，Wheel 46 rolls and is connected to be located on the track 47 on ground 54 along anterior-posterior horizontal direction，Upper backup pad 41 front center is provided with Power Drive Unit，Power Drive Unit includes shell body 48、Worm gear 49、Worm screw 50 and leading screw 51，Upper backup pad 41 front end center is provided with bearing block 52，Leading screw 51 is horizontally disposed with along the longitudinal direction and leading screw 51 rear end thereof is connected in bearing block 52，Worm gear 49 is positioned at shell body 48，Leading screw 51 through worm gear 49 center and is threadeded with worm gear 49，In worm screw 50 vertically extend into shell body 48 and with worm gear 49 engaged transmission，Stopper slot is the most vertically offered on shell body 48 leading flank and trailing flank，Leading screw 51 is through the stopper slot on shell body 48，Lower supporting plate 42 front end has been horizontally disposed with connecting plate 53，Connecting plate 53 upper surface it is fixedly connected on bottom shell body 48.

nullThe first refractory brickwork 4 bottom, every face is provided with steel bracing plate 55，It is located at bottom steel bracing plate 55 on ground 54，Each steel bracing plate 55 upper end the most all offers groove，Upper backup pad 41 left and right sides is respectively protruding into from front to back in a groove，The contact surface of upper backup pad 41 sidepiece bottom surface and bottom portion of groove is the inclined-plane being parallel to each other，The bottom of groove is provided with elastic refractory support，Upper backup pad 41 upper surface is equipped with the thermal insulation layer 56 being built into by refractory brick，Upper backup pad 41 forward edge and posterior edges are provided with simultaneously heat insulation for fire door insulated wall the most in left-right direction，It is positioned at upper backup pad 41 on each first refractory brickwork 4 and is arranged over the first projection 57，Thermal insulation layer about 56 two ends are equipped with second projection 58，Each second projection lower surface 58 is corresponding to a first projection 57 upper surface matched in clearance of homonymy.

nullDirect transfer and lead energy saving and environment friendly nitridation kiln in use，First on the upper backup pad 41 of kiln car 10, lay the thermal insulation layer 56 being built into by refractory brick，Silicon nitride combined silicon carbide product blank to be processed is placed on thermal insulation layer 56，Kiln car 10 is entered in main kiln body 59 by track 47，Upper backup pad 41 two ends of kiln car 10 are inserted in the groove that bracing members is lived，Rotated by driven by motor worm screw 50，Worm gear 49 is rotated and drives leading screw 51 to be moved down by the stopper slot on shell body 48 along worm screw 50，Owing to leading screw 51 is threadeded with worm gear 49，Worm gear 49 rotates and makes leading screw 51 promote upper backup pad 41 to be moved rearwards by，Thus heighten the wheel 45 hypotenuse structure rolls forward along fixed block 43，So that upper backup pad 41 falls，Upper backup pad 41 contacts formation inclined-plane and coordinates with the bottom portion of groove of steel bracing plate 55，Thus form sealing，Then wicket is shut，By the vacuum pump inlet communication by pipeline with vacuum-pumping tube pipe 65，Start vacuum pump and carry out evacuation in main kiln body 59，The gaseous mixture of natural gas and air is lighted and flame within adding heat pipe 24 through burner 28，The temperature liter adding around heat pipe 24 is made to reach predetermined temperature，By nitrogen ascending pipe 64 nitrogen injection in main kiln body 59，Silicon nitride combined silicon carbide product blank on kiln car 10 is between the heater 9 on both sides，Thus start roasting，During roasting，Open air exhauster by the high-temp waste gas run out of around heater 9 through air exhaust duct 6 and pipeline，The second airflow line 21 is entered into from the second connector 22，Entered by bleeding point 20 in the outer gas channel 13 of secondary kiln body 60，Act on through heat exchanger 15，High-temp waste gas in outer gas channel 13 enters the first airflow line 18 through air vent 17，Enter in air intake duct 7 through the first connector 19 and pipeline，Form high temperature gas flow and play heat effect，Silicon nitride combined silicon carbide product is formed after the scheduled time，Inverted by driven by motor worm screw 50，Worm gear 49 is rotated backward and drives leading screw 51 to be moved up by the stopper slot on shell body 48 along worm screw 50，Owing to leading screw 51 is threadeded with worm gear 49，Worm gear 49 reversion makes leading screw 51 pull upper backup pad 41 to move forward，Thus heighten wheel 45 and roll backward along the hypotenuse structure of fixed block 43，So that upper backup pad 41 rises，Kiln car 10 is pulled out；In whole roasting process, owing in main kiln body 59, temperature is the highest, add heat pipe 24 can expand, or after roasting terminates, in main kiln body 59, temperature is reduced by height, can make to add heat pipe 24 to shrink, now by the hold-down bolt 38 turned on holding device 31 thus promote location-plate 36 hold out against burner block 25 and extrude add heat pipe 24 so that heater 9 is more stable；It is provided with heater 9 in the left side of main kiln body 59 internal upper part and right side, and heater is disposed as three layers and adds heat pipe 24, use said structure heat conduction efficiency high so that in main kiln body 59, Temperature Distribution is more uniform so that the temperature in main kiln body 59 keeps constant.

The silicon nitride combined silicon carbide product cost leading energy saving and environment friendly nitridation kiln examination burning through direct transferring is low, has used in shaft reduction stove, aluminum smelting technology, pushed bat kiln push pedal and superior performance.

Shape of the present utility model, material, structure etc. are not made any pro forma restriction by the present embodiment; every any simple modification, equivalent variations and modification made above example according to technical spirit of the present utility model, belongs to the protection domain of technical solutions of the utility model.

Claims (2)

1. null1. the lifting leading energy saving and environment friendly nitridation kiln for direct transferring seals kiln car，It is characterized in that: include horizontally disposed upper backup pad and lower supporting plate，It is correspondingly provided with fixed block at four angles of upper backup pad lower surface，Each fixed block lower surface is all arranged in low dip after front height，Lower supporting plate front and rear is fixedly connected with axletree along left and right horizontal direction respectively，Both ends, each axletree left and right are all rotatably connected to heighten wheel，Each wheel top all correspondences of heightening are connected with the lower surface rolling of a fixed block，It is rotatably connected on axletree be positioned at each wheel heightened outside wheel，Wheel rolling is connected to be located on ground track along anterior-posterior horizontal direction，Upper backup pad front center is provided with Power Drive Unit，Power Drive Unit includes shell body、Worm gear、Worm screw and leading screw，Upper backup pad front end center is provided with bearing block，Leading screw is horizontally disposed with along the longitudinal direction and leading screw rear end thereof is connected in bearing block，Worm gear is positioned at shell body，Leading screw through worm gear center and is threadeded with worm gear，Worm screw vertically extend in shell body and with worm gear engaged transmission，Stopper slot is the most vertically offered on shell body leading flank and trailing flank，Leading screw is through the stopper slot on shell body，Lower supporting plate front end has been horizontally disposed with connecting plate，Connecting plate upper surface it is fixedly connected on bottom shell body.
2. The lifting leading energy saving and environment friendly nitridation kiln for direct transferring the most according to claim 1 seals kiln car, it is characterized in that: upper backup pad sidepiece bottom surface is set to ramp structure, upper backup pad upper surface is equipped with the thermal insulation layer being built into by refractory brick, and upper backup pad forward edge and posterior edges are provided with simultaneously heat insulation for fire door insulated wall the most in left-right direction.