Full-sealed metal plate surface heat treatment furnace
Technical Field
The invention relates to the technical field of heat treatment, in particular to a fully-sealed metal plate surface heat treatment furnace.
Background
The metal plate needs to be subjected to heat treatment after being treated so as to obtain better surface performance, the traditional heat treatment furnace is lack of a corresponding sealing design, so that the external air can be directly contacted with the surface of a workpiece in the heat treatment process, the heat treatment effect of the surface of the workpiece is interfered by impurity components contained in the air, and meanwhile, the air can directly enter the air again and take away a large amount of heat when the workpiece is loaded and unloaded, so that the energy waste is caused, the rapid rise of the external environment temperature of the heat treatment furnace is easily caused, and the body health of an operator is seriously influenced by a severe temperature environment.
The invention provides a novel metal plate heat treatment device which can effectively isolate external air so as to reduce heat loss, and can effectively solve the problems, so that a fully-sealed metal plate surface heat treatment furnace is provided.
Disclosure of Invention
The present invention is directed to a fully sealed heat treatment furnace for metal plate surfaces to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a fully-sealed metal plate surface heat treatment furnace comprises a base, wherein a feeding device and a furnace body are fixedly installed on the base through bolts, a control device is arranged at the front end of the base and comprises a connecting frame, a controller and a display screen are fixedly installed on the connecting frame through bolts, a gas supplementing tank and a flue gas recovery tank are fixedly installed on the furnace body through bolts, and an igniter is fixedly installed at the front end of the furnace body through bolts;
a first lifting push rod, a second lifting push rod, a third lifting push rod and a fourth lifting push rod are fixedly installed on the furnace body from left to right through bolts in sequence, a first sealing door is driven at the tail end of the first lifting push rod, a second sealing door is driven at the tail end of the second lifting push rod, a third sealing door is driven at the tail end of the third lifting push rod, a fourth sealing door is driven at the output end of the fourth lifting push rod, and a feeding isolation cavity, a heat treatment cavity and a discharging isolation cavity are sequentially divided from left to right through the first sealing door, the second sealing door, the third sealing door and the fourth sealing door on the furnace body;
the furnace body is fixedly provided with a first exhaust pump and a first air supply pump which are communicated with the feeding isolation cavity through bolts, the furnace body is fixedly provided with an air supplement pump and a gas recovery pump which are communicated with the heat treatment cavity through bolts, the furnace body is fixedly provided with a second air supply pump and a second exhaust pump which are communicated with the discharging isolation cavity through bolts, the flue gas recovery tank is communicated with the heat treatment cavity through a backflow pipe, the backflow pipe is provided with an electromagnetic valve, the output ends of the second air supply pump and the first air supply pump are both communicated with the heat treatment cavity, the output ends of the first exhaust pump and the second exhaust pump are both communicated with external air, the input end of the air supplement pump is communicated with an air supplement tank, and the output end of the gas recovery pump is communicated with the flue gas recovery tank;
the feeding device comprises a bearing seat fixedly mounted with a base through bolts, a support frame for supporting the metal plate is fixedly mounted on the bearing seat through bolts, a feeding push rod is fixedly mounted on the bearing seat through bolts, the output end of the feeding push rod drives a feeding plate for pushing the metal plate, a fixing frame is fixedly mounted on the bearing seat through bolts, an air nozzle for blowing off impurities on the surface of the metal plate is mounted on the fixing frame, an air pump is fixedly mounted at the bottom of the bearing seat through bolts, and the output end of the air pump is communicated with the air nozzle through an air pipe;
there is promotion push rod on the first closed door through bolt fixed mounting, and the output drive that promotes the push rod has the slurcam that inserts the feed and keep apart the intracavity and be used for promoting the metal sheet, there is row material push rod through bolt fixed mounting on the fourth closed door, and the output drive of arranging the material push rod has the board of colluding that inserts row material and keep apart the intracavity and be used for colluding out the metal sheet, the lower extreme of furnace body has fifth lift push rod through bolt fixed mounting, and the output drive of fifth lift push rod has the fifth closed door that corresponds the confined with fourth closed door bottom, the bottom in thermal treatment chamber is provided with the pressure-bearing soaking seat that is used for bearing the weight of metal sheet, and surrounds metal sheet fixed mounting in the thermal treatment chamber and the nozzle that communicates with some firearms, some firearms and outside gas supply equipment intercommunication, and the controller respectively with pay-off push rod, air pump, display screen, some firearm, some, The third lifting push rod, the fourth lifting push rod, the fifth lifting push rod, the discharge push rod, the electromagnetic valve, the pushing push rod, the air supplementing pump, the air recycling pump, the first exhaust pump, the first air supply pump, the second exhaust pump, the first lifting push rod and the second lifting push rod are electrically connected.
Preferably, a pair of limiting push rods electrically connected with the controller are fixedly mounted on the bearing seat through bolts, the output ends of the limiting push rods are driven by limiting plates used for limiting the movement positions of the metal plates, and the limiting push rods are single-rod double-acting hydraulic rods.
Preferably, the feeding push rod, the third lifting push rod, the fourth lifting push rod, the fifth lifting push rod, the discharging push rod, the pushing push rod, the first lifting push rod and the second lifting push rod are single-rod double-acting hydraulic push rods, and the display screen is a liquid crystal display screen.
Preferably, the controller is an S7-200 PLC controller, and the air pump is a high-pressure air pump.
Compared with the prior art, the invention has the beneficial effects that: the metal plate heat treatment furnace designed by the invention can effectively and thoroughly isolate the heat treatment cavity from the external air through step-by-step isolation, thereby effectively avoiding the heat taken away by the air entering in the charging and discharging processes, not only effectively avoiding the waste of energy, but also effectively avoiding the temperature rise of the external operation environment, further providing more comfortable operation environment for operators, avoiding the interference of impurities in the air, effectively ensuring the product quality after heat treatment and having very high practical value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the structure of the present invention;
FIG. 3 is a cross-sectional view of the structure of the present invention;
fig. 4 is a schematic structural view of the feeding device of the present invention.
In the figure: 1. a base; 2. a feeding device; 201. a feeding push rod; 202. a feeding plate; 203. a bearing seat; 204. a support frame; 205. a limit push rod; 206. a limiting plate; 207. an air tap; 208. an air pump; 209. a fixed mount; 3. a metal plate; 4. a control device; 401. a connecting frame; 402. a controller; 403. a display screen; 5. an igniter; 6. a third lifting push rod; 7. a fourth lifting push rod; 8. a furnace body; 9. a fifth lifting push rod; 10. a discharge push rod; 11. a fourth closing door; 12. a third sealing door; 13. a gas supplementing tank; 14. a flue gas recovery tank; 15. an electromagnetic valve; 16. a return pipe; 17. a second closure door; 18. a first closure door; 19. pushing the push rod; 20. an air supplement pump; 21. a gas recovery pump; 22. a first exhaust pump; 23. a first air feed pump; 24. a second air feed pump; 25. a second exhaust pump; 26. a fifth closing door; 27. hooking the plate; 28. a feed isolation chamber; 29. a pressure-bearing and heat-equalizing seat; 30. a nozzle; 31. a thermal processing chamber; 32. a discharge isolation chamber; 33. a first lifting push rod; 34. a second lifting push rod; 35. and pushing the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a fully-sealed metal plate surface heat treatment furnace comprises a base 1, wherein a feeding device 2 and a furnace body 8 are fixedly mounted on the base 1 through bolts, a control device 4 is arranged at the front end of the base 1, the control device 4 comprises a connecting frame 401, a controller 402 and a display screen 403 are fixedly mounted on the connecting frame 401 through bolts, an air supplementing tank 13 and a flue gas recovery tank 14 are fixedly mounted on the furnace body 8 through bolts, and an igniter 5 is fixedly mounted at the front end of the furnace body 8 through bolts;
a first lifting push rod 33, a second lifting push rod 34, a third lifting push rod 6 and a fourth lifting push rod 7 are fixedly installed on the furnace body 8 from left to right through bolts in sequence, a first closed door 18 is driven at the tail end of the first lifting push rod 33, a second closed door 17 is driven at the tail end of the second lifting push rod 34, a third closed door 12 is driven at the tail end of the third lifting push rod 6, a fourth closed door 11 is driven at the output end of the fourth lifting push rod 7, and a feeding isolation cavity 28, a heat treatment cavity 31 and a discharging isolation cavity 32 are sequentially divided from left to right on the furnace body 8 through the first closed door 18, the second closed door 17, the third closed door 12 and the fourth closed door 11;
a first exhaust pump 22 and a first air supply pump 23 which are communicated with the feeding isolation cavity 28 are fixedly installed on the furnace body 8 through bolts, an air supplement pump 20 and a gas recovery pump 21 which are communicated with the heat treatment cavity 31 are fixedly installed on the furnace body 8 through bolts, a second air supply pump 24 and a second exhaust pump 25 which are communicated with the discharging isolation cavity 32 are fixedly installed on the furnace body 8 through bolts, the flue gas recovery tank 14 is communicated with the heat treatment cavity 31 through a return pipe 16, an electromagnetic valve 15 is installed on the return pipe 16, the output ends of the second air supply pump 24 and the first air supply pump 23 are both communicated with the heat treatment cavity 31, the output ends of the first exhaust pump 22 and the second exhaust pump 25 are both communicated with outside air, the input end of the air supplement pump 20 is communicated with the air supplement tank 13, and the output end of the gas recovery pump 21 is communicated with the flue gas recovery tank 14;
the feeding device 2 comprises a bearing seat 203 fixedly mounted with the base 1 through bolts, a support frame 204 used for supporting the metal plate 3 is fixedly mounted on the bearing seat 203 through bolts, a feeding push rod 201 is fixedly mounted on the bearing seat 203 through bolts, a feeding plate 202 used for pushing the metal plate 3 is driven by the output end of the feeding push rod 201, a fixing frame 209 is fixedly mounted on the bearing seat 203 through bolts, an air nozzle 207 used for blowing impurities on the surface of the metal plate 3 is mounted on the fixing frame 209, an air pump 208 is fixedly mounted at the bottom of the bearing seat 203 through bolts, and the output end of the air pump 208 is communicated with the air nozzle 207 through an air pipe;
a pushing push rod 19 is fixedly arranged on the first sealing door 18 through bolts, the output end of the pushing push rod 19 drives a pushing plate 35 inserted into the feeding isolation cavity 28 and used for pushing the metal plate 3, a discharging push rod 10 is fixedly arranged on the fourth sealing door 11 through bolts, the output end of the discharging push rod 10 drives a hook plate 27 inserted into the discharging isolation cavity 32 and used for hooking the metal plate 3, a fifth lifting push rod 9 is fixedly arranged at the lower end of the furnace body 8 through bolts, the output end of the fifth lifting push rod 9 drives a fifth sealing door 26 correspondingly closed with the bottom of the fourth sealing door 11, a pressure-bearing and heat-equalizing seat 29 used for bearing the metal plate 3 is arranged at the bottom of the heat treatment cavity 31, a nozzle 30 communicated with an igniter 5 is fixedly arranged in the heat treatment cavity 31 around the metal plate 3, the igniter 5 is communicated with external gas supply equipment, a controller 402 is respectively communicated with the feeding push rod 201, the discharging push rod 201 and the discharging device through wires, The air pump 208, the display screen 403, the igniter 5, the third lifting push rod 6, the fourth lifting push rod 7, the fifth lifting push rod 9, the discharge push rod 10, the electromagnetic valve 15, the push rod 19, the air supplement pump 20, the gas recovery pump 21, the first exhaust pump 22, the first air supply pump 23, the second air supply pump 24, the second exhaust pump 25, the first lifting push rod 33 and the second lifting push rod 34 are electrically connected;
a pair of limit push rods 205 electrically connected with the controller 402 is fixedly arranged on the bearing seat 203 through bolts, the output end of the limit push rods 205 drives a limit plate 206 used for limiting the movement position of the metal plate 3, the limit push rods 205 are single-rod double-acting hydraulic rods, a pair of limit push rods 205 electrically connected with the controller 402 are fixedly arranged on the bearing seat 203 through bolts, the output end of the limit push rods 205 drives a limit plate 206 used for limiting the movement position of the metal plate 3, the limit push rods 205 are single-rod double-acting hydraulic rods, the feeding push rod 201, the third lifting push rod 6, the fourth lifting push rod 7 and the fifth lifting push rod 9, the discharging push rod 10, the pushing push rod 19, the first lifting push rod 33 and the second lifting push rod 34 are single-rod double-acting hydraulic push rods, the display screen 403 is a liquid crystal display screen, the controller 402 is an S7-200 type PLC controller, and the air pump 208 is a high-pressure air pump.
The working principle is as follows: when the device is used, the position of the limit plate 206 is adjusted through the limit push rod 205 according to the width of the metal plate 3, so that the limit plate 206 can play a guiding role in the motion process of the metal plate 3, then the feeding push rod 201 drives the metal plate 3 to move into the feeding isolation cavity 28 along the upper part of the support frame 204, and impurities on the surface of the metal plate 3 are removed by utilizing high-pressure gas sprayed by the gas nozzle 207 in the moving process. After the metal sheet 3 enters the feed segregation chamber 28, the first closing door 18 is closed, then the air in the feed segregation chamber 28 is exhausted by the first exhaust pump 22, then the second closing door 17 is opened and the metal sheet 3 is pushed into the heat treatment chamber 31 by the push rod 19, when the second closing door 17 is closed after the metal sheet 3 enters the heat treatment chamber 31 and the first air-feed pump 23 feeds the hot gas in the feed insulation chamber 28 at this time into the furnace body 8, meanwhile, the igniter 5 starts ignition and sprays ignited fuel gas to the surface of the metal plate 3 through the nozzle 30 to perform surface heat treatment on the metal plate 3, the flue gas generated in the heat treatment process can be sent into the flue gas recovery tank 14 through the gas recovery pump 21 to be recovered and waits for external treatment equipment to treat the flue gas, and the flue gas in the flue gas recovery tank 14 can be sent into the heat treatment cavity 31 again through the return pipe 16 when necessary. After the heat treatment is finished, the third sealing door 12 is opened, the material discharging push rod 10 drives the hook plate 27 to move to the position above the metal plate 3, then the fifth sealing door 26 and the fourth sealing door 11 move downwards together to enable the hook plate 27 to hook the rear of the metal plate 3, at the moment, the hook plate 27 is driven by the material discharging push rod 10 to hook the metal plate 3 into the material discharging isolation cavity 32, then the third sealing door 12 is closed, then the hot gas in the material discharging isolation cavity 32 is pumped into the heat treatment cavity 31 by using the second air supply pump 24, then the fifth sealing door 26 is opened downwards, meanwhile, the material discharging push rod 10 continues to drive the hook plate 27 to hook the metal plate 3 out of the material discharging isolation cavity 32, then the fifth sealing door 26 moves upwards and is reclosed with the fourth sealing door 11, then the fourth sealing door 11 and the fifth sealing door 26 move upwards together to drive the material discharging push rod 10 to move upwards to the non-working position, meanwhile, the second exhaust pump 25 pumps the gas in the discharge isolating chamber 32 to the air, so that the whole heat treatment process of the metal plate 3 can be completed. During the heat treatment of the metal plate 3 by the heat treatment chamber 31, the gas in the gas supply pipe 13 can be supplied into the heat treatment chamber 31 by the gas supply pump 20, and the gas supply pipe 13 can be filled with the gas for the heat treatment process such as nitriding, carburizing, and the like. Further, the igniter 5 and the nozzle 30 for heating of the apparatus may be removed and replaced with high frequency heating coils for heating, in which case no fume is generated during the heat treatment, and the gas recovery pump 21 may be used to evacuate the interior of the heat treatment chamber 31, and the first and second gas pumps 23 and 24 may be removed to omit the step of drawing the hot gas in the feed and discharge insulation chambers 28 and 32 into the heat treatment chamber 31. The device can be effectual keep apart thermal treatment chamber 31 and the thorough isolation of outside air through the substep to can effectually avoid taking away the heat at the air that gets into at last unloading in-process, not only can effectually avoid the waste of the energy, can effectually avoid outside operation environment to heat up in addition, thereby provide operating personnel more comfortable operation environment, and avoid receiving the interference of impurity in the air, the effectual thermal treatment back product quality of having ensured, have very high practical value.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.