CN115823899B - Immersed type centralized melting furnace - Google Patents

Abstract

The invention relates to the technical field of centralized melting furnace design, in particular to an immersed type centralized melting furnace which comprises a furnace body, a material taking device, a primary heat exchange device, a second heat exchange device, a controller and the like. The beneficial effects are as follows: the immersion type centralized melting furnace designed by the invention can effectively carry out auxiliary melting and heat preservation on metal through the heating rod inserted into the metal liquid, can realize better sealing effect through the feeding device and the material taking device in the use process, can realize better heat insulation effect through the furnace body with a multilayer structure, can realize recovery of heat in tail smoke through the primary heat exchanger, the first heat exchanger and the second heat exchanger, can maintain the temperature of the furnace body by utilizing the recovered heat, reduces heat loss, and has high practical value.

Description

Immersed type centralized melting furnace

Technical Field

The invention relates to the technical field of centralized melting furnace design, in particular to an immersed type centralized melting furnace.

Background

The metal with lower melting point such as aluminum alloy can be heated by adopting a centralized melting furnace during melting processing, a metal material is put into the melting furnace from a feeding end in the heating process, after being burnt by a burner, the metal is melted into metal liquid, and then the metal liquid is taken out from a discharging end. When the existing centralized melting furnace works, the effective sealing on the feeding and liquid discharging processes is lacking, meanwhile, the furnace body is lack of a better heat insulation structure, so that heat is easy to dissipate, more energy is required to be consumed, and meanwhile, the waste heat in tail smoke is lack of effective recovery, so that the energy waste is caused. On the other hand, the burner is used for heating the metal material and preserving heat of the metal liquid, and the heat transfer efficiency is low, so that insufficient heat utilization and energy waste are caused.

The invention provides a submerged type concentrated melting furnace, which can effectively solve the problems by providing a novel concentrated melting furnace capable of carrying out auxiliary heating and heat preservation on metal liquid through a heating rod immersed in the metal liquid, simultaneously having better sealing and heat preservation effects and fully recovering waste heat in tail smoke to improve energy utilization efficiency.

Disclosure of Invention

The invention aims to provide an immersed type centralized melting furnace, which solves the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: an immersion type centralized melting furnace, the centralized melting furnace comprising:

the furnace body, material taking cavity, heat preservation chamber and heating chamber have been set gradually from left to right in the furnace body, and link to each other through the exchange flow channel between material taking cavity and the heat preservation chamber, the upper end intercommunication in heat preservation chamber and heating chamber, and the furnace body is provided with material loading air guide passageway in the upper end department that corresponds the heating chamber, be provided with the feed arrangement who is used for the material loading on the material loading air guide passageway, and be provided with the buffer board that is used for slowing down the material whereabouts speed in the material loading air guide passageway, the outer wall of furnace body is separated into first negative pressure layer, first heat preservation, second heat preservation and second negative pressure layer from interior to exterior through insulating material in proper order, and the furnace body is installed in the upper end department that corresponds material loading air guide passageway and is provided with the connecting pipe on the collection petticoat pipe, and be provided with the dust removal box that is used for removing dust to the tail cigarette in the collection petticoat pipe, the furnace body is provided with the maintenance mouth that is used for the maintenance and the row material mouth that is used for the sediment in the position department that corresponds the heating chamber, and the furnace body is located fixed mounting with the position department that is connected with outside gas supply device, on fixedly mounted with the heating chamber and heat pump, heating device and heat pump are all installed.

The material taking device comprises a material taking channel communicated with the material taking cavity, a first material taking push rod and a second material taking push rod are sequentially arranged in the material taking channel from top to bottom, a first material taking valve plate for sealing the material taking channel is driven at the output end of the first material taking push rod, a second material taking valve plate for sealing the material taking channel is driven at the output end of the second material taking push rod, and a temporary cavity for temporarily placing a crucible is formed between the first material taking valve plate and the second material taking valve plate;

the primary heat exchange device comprises a heat insulation box body, a circulating flow channel is formed in the heat insulation box body through separation of guide plates, a tail gas flow channel is formed in the circulating flow channel through a heat exchange pipe, an auxiliary heat exchange piece for auxiliary heat exchange is arranged between the tail gas flow channel and the circulating flow channel, the front end of the tail gas flow channel is communicated with a connecting pipe, the tail end of the tail gas flow channel is communicated with a purification device, the output end of the purification device is communicated with a main air pump, the output end of the main air pump is connected with a first heat exchanger, a smoke exhaust pipe for exhausting the tail gas provided by the main air pump is arranged on the first heat exchanger, the tail end of the circulating flow channel is communicated with a first heat preservation layer, a second circulating pump for communicating the first heat preservation layer with the head end of the circulating flow channel is fixedly arranged on the furnace body, and a first circulating pump for communicating the second heat preservation layer with the first heat exchanger is fixedly arranged on the furnace body, and fluid fed by the first circulating pump is fed into the second heat preservation layer again after heat exchange through the guide pipe;

the second heat exchanger is provided with an external inlet and an external outlet for circulating external heat exchange fluid, and is provided with a drainage pipe and an inflow pipe for circulating fluid in the first heat preservation layer and the second heat preservation layer, the drainage pipe is connected with the first heat preservation layer through a first electromagnetic valve, the drainage pipe is connected with the second heat preservation layer through a second electromagnetic valve, the first heat preservation layer is connected with the inflow pipe through a first extraction pump, and the second heat preservation layer is connected with the inflow pipe through a second extraction pump;

the controller is arranged on the outer wall of the furnace body, a main pressure detection sensor and a main temperature detection sensor for detecting temperature and air pressure information of the inner cavity of the furnace body are respectively arranged on the furnace body, a first temperature detection sensor and a second temperature detection sensor for respectively and correspondingly detecting temperature information in the first heat preservation layer and the second heat preservation layer are arranged on the furnace body, and the controller is respectively and electrically connected with the first material taking push rod, the second material taking push rod, the first temperature detection sensor, the main pressure detection sensor, the main temperature detection sensor, the second temperature detection sensor, the first electromagnetic valve, the second extraction pump, the main air pump, the first extraction pump, the heating rod, the air supply pump, the first circulating pump and the second circulating pump.

Preferably, the dust removing box comprises a heat insulating box body fixedly installed with the fume collecting hood and used for collecting fume, an air inlet channel communicated with the feeding air guide channel is formed in the heat insulating box body, a dust filtering net corresponding to the connecting pipe is installed on the heat insulating box body, a scraping brush push rod electrically connected with the controller is fixedly installed on the heat insulating box body, and a scraping blade used for scraping the dust filtering net is driven at the output end of the scraping brush push rod.

Preferably, the soaking device comprises a heat conducting sleeve sleeved on the heating rod, a main heat conducting sheet is arranged on the heat conducting sleeve, and an auxiliary heat conducting sheet is fixedly arranged on the main heat conducting sheet.

Preferably, the bottom of furnace body is provided with strutting arrangement, and strutting arrangement includes a pair of thermal-insulated backup pad, be provided with the snubber block between the thermal-insulated backup pad, and be located and install the support column between thermal-insulated backup pad and the snubber block of upper strata.

Preferably, the feeding device comprises a feeding channel communicated with the feeding air guide channel, a first feeding push rod and a second feeding push rod are sequentially arranged on the feeding channel from top to bottom, a first feeding valve plate for sealing the feeding channel is driven by the output end of the first feeding push rod, and a second feeding valve plate for sealing the feeding channel is driven by the output end of the second feeding push rod.

Preferably, the stirring motor electrically connected with the controller is fixedly arranged on the furnace body, and the output end of the stirring motor is driven by a stirring paddle inserted into the heat preservation cavity for stirring.

Preferably, the furnace body is provided with a first negative pressure pump and a first inflator pump which are communicated with the first negative pressure layer, the furnace body is provided with a first pressure detection sensor for detecting air pressure in the first negative pressure layer, the furnace body is provided with a second negative pressure pump and a second inflator pump which are communicated with the second negative pressure layer, the furnace body is provided with a second pressure detection sensor for detecting air pressure in the second negative pressure layer, and the first negative pressure pump, the first inflator pump, the first pressure detection sensor, the second negative pressure pump, the second inflator pump and the second pressure detection sensor are all electrically connected with the controller.

Preferably, the controller is a PLC controller or an industrial personal computer, and the first heat exchanger and the second heat exchanger are both plate heat exchangers.

Preferably, a filter layer, a catalytic reaction layer and an activated carbon adsorption layer are sequentially arranged in the purification device from an air inlet end to an air outlet end, and the heating rod sequentially comprises heat conducting ceramic, a heating coil and a graphite rod core from outside to inside.

Preferably, the furnace body is provided with discharging equipment in the side department that corresponds the material chamber, and discharging equipment includes the pipe with material chamber intercommunication, be provided with the downward discharge port of opening on the pipe, and install the heater in the top of pipe, the terminal fixed mounting of pipe has sealed push rod, and seals the output of push rod and install the heat conduction closing head that is used for sealing the discharge port, install the heat conduction piece of being connected with the heater in the heat conduction closing head, and the heat insulating board is installed to the terminal of heat conduction closing head, heater and sealing push rod all with controller electric connection.

Compared with the prior art, the invention has the beneficial effects that: the immersion type centralized melting furnace designed by the invention can effectively carry out auxiliary melting and heat preservation on metal through the heating rod inserted into the metal liquid, can realize better sealing effect through the feeding device and the material taking device in the use process, can realize better heat insulation effect through the furnace body with a multilayer structure, can realize recovery of heat in tail smoke through the primary heat exchanger, the first heat exchanger and the second heat exchanger, can maintain the temperature of the furnace body by utilizing the recovered heat, reduces heat loss, and has high practical value.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a side view of the structure of embodiment 1 of the present invention;

FIG. 3 is a schematic view showing a section of a furnace body in example 1 of the present invention;

fig. 4 is a schematic structural view of a dust-removing box in embodiment 1 of the present invention;

FIG. 5 is a schematic view of the primary heat exchange device in embodiment 1 of the present invention;

fig. 6 is a schematic structural diagram of a soaking device in embodiment 1 of the present invention;

FIG. 7 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 8 is a schematic view showing the structure of a discharging device in embodiment 2 of the present invention.

In the figure: 1. a furnace body; 2. a discharge device; 201. a conduit; 202. conducting heat and sealing the closed head; 203. a heat conduction block; 204. a discharge port; 205. a heat insulating plate; 206. a heater; 207. closing the push rod; 3. a primary heat exchange device; 301. a circulation flow channel; 302. a tail gas flow passage; 303. auxiliary heat exchange plates; 304. a heat insulation box; 305. a deflector; 4. a soaking device; 401. a main heat conductive sheet; 402. a thermally conductive sleeve; 403. auxiliary heat conductive sheet; 5. a dust removal box; 501. scraping and brushing the push rod; 502. a wiper blade; 503. a dust filtering net; 504. an air intake passage; 505. a heat insulation box; 6. a feeding device; 601. a first feed valve plate; 602. a first feed push rod; 603. a feed channel; 604. a second feed valve plate; 605. a second feed push rod; 7. a support device; 701. a heat insulation support plate; 702. a support column; 703. a damper block; 8. a material taking device; 801. a take-out channel; 802. a first take-off valve plate; 803. a first take-out push rod; 804. a temporary cavity; 805. a second take-off valve plate; 806. a second take-out push rod; 9. a fume collecting hood; 10. a first temperature detection sensor; 11. a main pressure detection sensor; 12. a main temperature detection sensor; 13. a second temperature detection sensor; 14. a controller; 15. an access opening; 16. a discharge port; 17. a smoke exhaust pipe; 18. a first electromagnetic valve; 19. a drainage tube; 20. a second electromagnetic valve; 21. a second heat exchanger; 22. an external inlet; 23. an external drainage port; 24. a flow inlet pipe; 25. a second pump; 26. a first heat exchanger; 27. a purifying device; 28. a main air pump; 29. a first pump; 30. a heating rod; 31. an air supply pump; 32. a first pressure detection sensor; 33. a first inflator; 34. a first negative pressure pump; 35. a second negative pressure pump; 36. a second inflator; 37. a second pressure detection sensor; 38. a first circulation pump; 39. a second circulation pump; 40. a buffer plate; 41. a feeding air guide channel; 42. a connecting pipe; 43. a burner; 44. a stirring motor; 45. stirring paddles; 46. a heat preservation cavity; 47. exchange the runner; 48. a heating chamber; 49. a material taking cavity; 50. a second negative pressure layer; 51. a second heat-insulating layer; 52. a first heat-retaining layer; 53. a first negative pressure layer.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by a person skilled in the art without making any creative effort fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 6, an immersion type centralized melting furnace, the centralized melting furnace comprising:

referring to fig. 1 to 6, a material taking cavity 49, a heat preservation cavity 46 and a heating cavity 48 are sequentially arranged in the furnace body 1 from left to right, the material taking cavity 49 and the heat preservation cavity 46 are connected through an exchange flow channel 47, the heat preservation cavity 46 is communicated with the upper end of the heating cavity 48, a feeding air guide channel 41 is arranged at the upper end of the corresponding heating cavity 48 of the furnace body 1, a feeding device 6 for feeding is arranged on the feeding air guide channel 41, a buffer plate 40 for slowing down the falling speed of materials is arranged in the feeding air guide channel 41, the feeding device 6 comprises a feeding channel 603 communicated with the feeding air guide channel 41, a first feeding push rod 602 and a second feeding push rod 605 are sequentially arranged on the feeding channel 603 from top to bottom, a first feeding valve plate 601 for closing the feeding channel 603 is driven at the output end of the first feeding push rod 602, a second feeding valve plate 604 for closing the feeding channel 603 is driven at the output end of the second feeding push rod 605, the outer wall of the furnace body 1 is sequentially divided into a first negative pressure layer 53, a first heat preservation layer 52, a second heat preservation layer 51 and a second negative pressure layer 50 from inside to outside through heat insulation materials, the furnace body 1 is provided with a fume collecting hood 9 at the upper end corresponding to the feeding air guide channel 41, a connecting pipe 42 is arranged on the fume collecting hood 9, a dust removing box 5 for removing dust from tail fume is arranged in the fume collecting hood 9, the dust removing box 5 comprises a heat insulation box body 505 fixedly arranged with the fume collecting hood 9 and used for collecting dust, an air inlet channel 504 communicated with the feeding air guide channel 41 is arranged on the heat insulation box body 505, a dust filtering net 503 corresponding to the position of the connecting pipe 42 is arranged on the heat insulation box body 505, a scraping and brushing push rod 501 electrically connected with the controller 14 is fixedly arranged on the heat insulation box body 505, a scraping blade 502 used for scraping and brushing the dust filtering net 503 is driven at the output end of the scraping and brushing push rod 501, the furnace body 1 is provided with an overhaul port 15 for overhaul and a discharge port 16 for deslagging at the position corresponding to the heating cavity 48, the furnace body 1 is fixedly provided with a burner 43 connected with an external fuel gas supply device at the position corresponding to the heating cavity 48, the furnace body 1 is fixedly provided with an air supply pump 31, the air supply pump 31 is connected with the burner 43, heating rods 30 are fixedly arranged in the heating cavity 48, the heat preservation cavity 46 and the material taking cavity 49, the heating rods 30 are provided with soaking devices 4 for heat conduction, the soaking devices 4 comprise heat conduction sleeves 402 sleeved on the heating rods 30, the heat conduction sleeves 402 are provided with main heat conduction sheets 401, the main heat conduction sheets 401 are fixedly provided with auxiliary heat conduction sheets 403, the bottom of the furnace body 1 is provided with a supporting device 7, the supporting device 7 comprises a pair of heat insulation supporting plates 701, a shock absorber 703 is arranged between the heat insulation support plates 701, a support column 702 is arranged between the heat insulation support plates 701 and the shock absorber 703 on the upper layer, a first negative pressure pump 34 and a first inflator 33 which are communicated with the first negative pressure layer 53 are fixedly arranged on the furnace body 1, a first pressure detection sensor 32 which is used for detecting the air pressure in the first negative pressure layer 53 is arranged on the furnace body 1, a second negative pressure pump 35 and a second inflator 36 which are communicated with the second negative pressure layer 50 are fixedly arranged on the furnace body 1, a second pressure detection sensor 37 which is used for detecting the air pressure in the second negative pressure layer 50 is fixedly arranged on the furnace body 1, and the first negative pressure pump 34, the first inflator 33, the first pressure detection sensor 32, the second negative pressure pump 35, the second inflator 36 and the second pressure detection sensor 37 are all electrically connected with the controller 14.

Referring to fig. 1 to 3, a material taking device 8, the material taking device 8 includes a material taking channel 801 communicated with a material taking cavity 49, a first material taking push rod 803 and a second material taking push rod 806 are sequentially installed on the material taking channel 801 from top to bottom, a first material taking valve plate 802 for closing the material taking channel 801 is driven by an output end of the first material taking push rod 803, a second material taking valve plate 805 for closing the material taking channel 801 is driven by an output end of the second material taking push rod 806, and a temporary cavity 804 for temporarily placing a crucible is formed between the first material taking valve plate 802 and the second material taking valve plate 805;

referring to fig. 1, 2 and 4, the primary heat exchange device 3 is shown, the primary heat exchange device 3 comprises a heat insulation box 304, a circulating flow channel 301 is formed in the heat insulation box 304 by separation of a guide plate 305, a tail gas flow channel 302 is formed in the circulating flow channel 301 through a heat exchange tube, an auxiliary heat exchange piece 303 for auxiliary heat exchange is arranged between the tail gas flow channel 302 and the circulating flow channel 301, the front end of the tail gas flow channel 302 is communicated with a connecting tube 42, the tail end of the tail gas flow channel 302 is communicated with a purifying device 27, the output end of the purifying device 27 is communicated with a main air pump 28, the output end of the main air pump 28 is connected with a first heat exchanger 26, the first heat exchanger 26 is provided with a smoke exhaust tube 17 for exhausting the main air pump 28 to provide tail gas, the tail end of the circulating flow channel 301 is communicated with a first heat preservation layer 52, a second circulating pump 39 for communicating the first heat preservation layer 52 and the head end of the circulating flow channel 301 is fixedly arranged on the furnace body 1, a first circulating pump 38 for communicating the second heat preservation layer 51 and the first heat exchanger 26 is fixedly arranged on the furnace body 1, the first heat exchanger 26 is sent into the heat exchange layer from the heat exchange layer to the heat exchange layer through a heat exchange tube, the second heat exchange tube and the heat exchange layer 27 is sequentially filled with a heating rod, and the active carbon adsorption rod is sequentially arranged in the heat exchange rod and the heat absorption rod 30 from the heat exchange rod and the heat exchange rod is sequentially arranged from the second heat preservation layer to the heat layer;

referring to fig. 1 to 3, a second heat exchanger 21 is shown, an external inlet 22 and an external outlet 23 for circulating external heat exchange fluid are provided on the second heat exchanger 21, a drain pipe 19 and an inlet pipe 24 for circulating fluid in the first heat preservation layer 52 and the second heat preservation layer 51 are provided on the second heat exchanger 21, the drain pipe 19 is connected with the first heat preservation layer 52 through a first electromagnetic valve 18, the drain pipe 19 is connected with the second heat preservation layer 51 through a second electromagnetic valve 20, the first heat preservation layer 52 is connected with the inlet pipe 24 through a first pumping pump 29, and the second heat preservation layer 51 is connected with the inlet pipe 24 through a second pumping pump 25;

referring to fig. 1 to 3, a controller 14 is shown in fig. 1 to 3, the controller 14 is mounted on an outer wall of the furnace body 1, a main pressure detection sensor 11 and a main temperature detection sensor 12 for detecting temperature and air pressure information of an inner cavity of the furnace body 1 are respectively mounted on the furnace body 1, a first temperature detection sensor 10 and a second temperature detection sensor 13 for respectively detecting temperature information in the first heat preservation layer 52 and the second heat preservation layer 51 are mounted on the furnace body 1, the controller 14 is respectively and electrically connected with a first material taking push rod 803, a second material taking push rod 806, the first temperature detection sensor 10, the main pressure detection sensor 11, the main temperature detection sensor 12, the second temperature detection sensor 13, a first electromagnetic valve 18, a second electromagnetic valve 20, a second extraction pump 25, a main air pump 28, a first extraction pump 29, a heating rod 30, an air supply pump 31, a first circulation pump 38 and a second circulation pump 39, a stirring motor 44 electrically connected with the controller 14 is fixedly mounted on the furnace body 1, an output end of the stirring motor 44 is inserted into the first heat preservation layer 46, the stirring motor is driven by a paddle controller 14, and the stirring motor is a heat exchanger 14 is a heat exchanger 26 or a plate type heat exchanger is a controller 26.

In this embodiment, when metal is required to be melted, first the first feed valve plate 601 is opened, metal material is placed at a position between the first feed valve plate 601 and the second feed valve plate 604, then the first feed valve plate 601 is closed, the second feed valve plate 604 starts to be opened after closing, at this time, the metal material slides to the buffer plate 40 along the feed channel 603, and is sent to the heating chamber 48 under the guidance of the buffer plate 40, then the external gas supply device starts to supply fuel to the burner 43 while the gas supply pump 31 supplies air to the burner 43, so that the metal material is melted by the high temperature flame sprayed from the burner 43, the melted metal liquid flows into the heat preservation chamber 46 for heat preservation, the heat preservation chamber 46 is communicated with the material taking chamber 49 through the exchange flow channel 47, the metal liquid in the heat preservation chamber 46 flows into the material taking chamber 49 after exceeding a specified height, meanwhile, the temperature of the two internal metal liquids in the material taking cavity 49 and the heat preservation cavity 46 is consistent, the heating rods 30 immersed in the metal liquids are arranged in the heat preservation cavity 46, the material taking cavity 49 and the heating cavity 48 to carry out auxiliary heating and heat preservation, the soaking device 4 on the heating rods 30 can better transfer the heat on the heating rods 30 to the metal liquids to avoid local overhigh heat, meanwhile, the stirring motor 44 can stir the metal liquids in the heat preservation cavity 46 by driving the stirring paddles 45, the temperature uniformity of the metal liquids is further improved, the controller 14 can detect the temperature of each part in the furnace body 1 through the main temperature detection sensor 12 so as to control the heating states of each heating rod 30 and the burner 43, and better heating effect is realized, the heated metal liquid enters the take-off chamber 49 to wait for taking off. During material taking, the first material taking valve plate 802 is opened firstly, then the crucible is placed in the temporary cavity 804, then the first material taking valve plate 802 is closed inwards to leave only a gap for a lifting rope suspending the crucible to pass through, then the second material taking valve plate 805 is opened to enable the crucible to enter the material taking cavity 49 along the material taking channel 801, thus material taking is completed, then the crucible is lifted upwards to be in the temporary cavity 804 and stays, meanwhile, the material taking channel 801 is completely closed by the second material taking valve plate 805, and then the first material taking valve plate 802 is completely opened again to lift the crucible out, so that the material taking process is completed. When the metal material is accelerated in the heating cavity 48, smoke is generated, the smoke enters the smoke collecting hood 9 along the feeding air guide channel 41, then the smoke is filtered by the dust filtering net 503, large-particle smoke is intercepted in the heat insulation box 505, then the smoke passes through the connecting pipe 42 to enter the tail gas flow channel 302 for first heat exchange, then the smoke is purified by the purifying device 27 and then is introduced into the first heat exchanger 26 for second heat exchange, and the smoke is discharged through the smoke discharging pipe 17 after heat exchange. The second circulating pump 39 can pump the fluid in the first heat preservation layer 52 into the primary heat exchange device 3, the fluid after heat exchange by the primary heat exchange device 3 is re-sent into the first heat preservation layer 52 so as to realize heat preservation of the interior of the furnace body 1, the first circulating pump 38 can pump the fluid in the second heat preservation layer 51 into the first heat exchanger 26, the fluid is re-sent into the second heat preservation layer 51 to preserve heat of the interior of the furnace body 1 after heat exchange by the first heat exchanger 26, when the first temperature detection sensor 10 and the second temperature detection sensor 13 respectively detect that the temperatures in the first heat preservation layer 52 and the second heat preservation layer 51 are higher than the specified temperatures, the internal fluid in the first heat preservation layer 52 and the second heat preservation layer 51 can be pumped through the first pumping pump 29 and the second pumping pump 25 and sent into the second heat exchanger 21 so as to recover redundant heat by external heat exchange media, the heat recovered by the external heat exchange media can also be used for preheating metal materials to be melted, and the internal fluid in the first heat preservation layer 52 and the second electromagnetic valve 20 can flow back to the first heat preservation layer 52 and the second electromagnetic valve 20 after the first heat exchange layer 52 and the second electromagnetic valve 51 pass through the first heat preservation layer 18 and the second electromagnetic valve 20 and the second heat preservation layer 51. The air pressure in the first negative pressure layer 53 of the device can be regulated by the first negative pressure pump 34 and the first inflator 33 together, and the air pressure in the second negative pressure layer 50 can be regulated by the second negative pressure pump 35 and the second inflator 36, so that the heat dissipation speed in the furnace body 1 can be effectively regulated by the air pressure in the first negative pressure layer 53 and the second negative pressure layer 50, the heat dissipation can be isolated during operation, and the furnace body 1 can be rapidly cooled during operation without working. When the main pressure detection sensor 11 detects that the pressure in the furnace body 1 is higher, the air flow in the furnace body 1 is extracted through the main air pump 28 to improve the exhaust speed of tail smoke, so that the tail smoke is prevented from accumulating and polluting the inner wall of the furnace body 1 in the furnace body 1, the furnace body 1 can also exhaust waste residues through the discharge port 16 when not working, and the partial overhaul is carried out through the overhaul port 15, so that the use is very convenient.

Example 2

Referring to fig. 7 to 8, in comparison with embodiment 1, the furnace body 1 is provided with a discharging device 2 at the side corresponding to the material taking cavity 49, the discharging device 2 includes a conduit 201 communicating with the material taking cavity 49, a downward opening discharging port 204 is provided on the conduit 201, a heater 206 is installed above the conduit 201, a closing push rod 207 is fixedly installed at the end of the conduit 201, a heat conducting closing head 202 for closing the discharging port 204 is installed at the output end of the closing push rod 207, a heat conducting block 203 connected with the heater 206 is installed in the heat conducting closing head 202, a heat insulating plate 205 is installed at the end of the heat conducting closing head 202, and both the heater 206 and the closing push rod 207 are electrically connected with the controller 14. The discharging device 2 allows molten metal liquid to be discharged into the crucible through the discharging opening 204, during operation, the heat conduction sealing head 202 is pulled back to the non-working position through the sealing push rod 207, at this time, the conduit 201 and the discharging opening 204 are communicated, the liquid can be discharged through the discharging opening 204, after the discharging is finished, the sealing push rod 207 pushes the heat conduction sealing head 202 to the working position again, so that the communication between the conduit 201 and the discharging opening 204 is disconnected, the heater 206 can heat the heat conduction block 203, the heat conduction block 203 continuously heats the metal liquid near the heat conduction sealing head 202 through the heat conduction sealing head 202, thereby avoiding solidification of the liquid, and the heat insulation plate 205 can effectively reduce heat dissipation, so that the heat utilization efficiency is improved.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An immersion type centralized melting furnace, characterized in that the centralized melting furnace comprises:

furnace body (1), material taking cavity (49), heat preservation cavity (46) and heating cavity (48) have been set gradually from left to right in furnace body (1), and link to each other through exchange runner (47) between material taking cavity (49) and heat preservation cavity (46), the upper end intercommunication of heat preservation cavity (46) and heating cavity (48), and furnace body (1) are provided with material loading air guide passageway (41) in the upper end department that corresponds heating cavity (48), be provided with feed arrangement (6) that are used for the material loading on material loading air guide passageway (41), and be provided with buffer board (40) that are used for slowing down the material whereabouts speed in material loading air guide passageway (41), the outer wall of furnace body (1) is separated into first negative pressure layer (53), first heat preservation layer (52), second heat preservation layer (51) and second negative pressure layer (50) in proper order through the insulating material from inside to outside, and furnace body (1) installs fume collecting hood (9) in the upper end department that corresponds material loading air guide passageway (41), be provided with on fume collecting hood (9) connecting pipe (42), and be provided with in fume collecting hood (9) and be used for setting up dust removal box (16) in the position that is used for repairing and is used for taking dust bin (16) in the position (15), the furnace body (1) is fixedly provided with a burner (43) connected with an external fuel gas supply device at a position corresponding to the heating cavity (48), the furnace body (1) is fixedly provided with an air supply pump (31), the air supply pump (31) is connected with the burner (43), heating rods (30) are fixedly arranged in the heating cavity (48), the heat preservation cavity (46) and the material taking cavity (49), and the heating rods (30) are provided with a soaking device (4) for heat conduction;

the material taking device (8), the material taking device (8) comprises a material taking channel (801) communicated with a material taking cavity (49), the material taking channel (801) is sequentially provided with a first material taking push rod (803) and a second material taking push rod (806) from top to bottom, the output end of the first material taking push rod (803) is driven with a first material taking valve plate (802) for sealing the material taking channel (801), the output end of the second material taking push rod (806) is driven with a second material taking valve plate (805) for sealing the material taking channel (801), and a temporary cavity (804) for temporarily placing a crucible is formed between the first material taking valve plate (802) and the second material taking valve plate (805);

the primary heat exchange device (3), the primary heat exchange device (3) comprises a heat insulation box body (304), the heat insulation box body (304) is internally divided into a circulating flow passage (301) through a guide plate (305), a tail gas flow passage (302) is formed in the circulating flow passage (301) through a heat exchange tube, an auxiliary heat exchange plate (303) for auxiliary heat exchange is arranged between the tail gas flow passage (302) and the circulating flow passage (301), the front end of the tail gas flow passage (302) is communicated with a connecting pipe (42), the tail end of the tail gas flow passage (302) is communicated with a purifying device (27), the output end of the purifying device (27) is communicated with a main air pump (28), the output end of the main air pump (28) is connected with a first heat exchanger (26), the first heat exchanger (26) is provided with a smoke exhaust pipe (17) for exhausting the main air pump (28) to provide tail gas, the tail end of the circulating flow passage (301) is communicated with a first heat preservation layer (52), a second circulating pump (39) for communicating the first heat preservation layer (52) and the head end of the circulating flow passage (301) is fixedly arranged on the furnace body (1), the second circulating pump (39) is communicated with the first heat exchange layer (38), the first heat exchanger (26) is used for conveying the fluid conveyed by the first circulating pump (38) into the second heat insulation layer (51) through the guide pipe after heat exchange;

the heat exchange device comprises a second heat exchanger (21), wherein an external inlet (22) and an external outlet (23) for circulating external heat exchange fluid are arranged on the second heat exchanger (21), a drain pipe (19) and an inlet pipe (24) for circulating fluid in the first heat preservation layer (52) and the second heat preservation layer (51) are arranged on the second heat exchanger (21), the drain pipe (19) is connected with the first heat preservation layer (52) through a first electromagnetic valve (18), the drain pipe (19) is connected with the second heat preservation layer (51) through a second electromagnetic valve (20), the first heat preservation layer (52) is connected with the inlet pipe (24) through a first extraction pump (29), and the second heat preservation layer (51) is connected with the inlet pipe (24) through a second extraction pump (25);

the controller (14), the controller (14) is installed on the outer wall of furnace body (1), and install main pressure detection sensor (11) and main temperature detection sensor (12) that are used for detecting the regional temperature of furnace body (1) inner chamber and atmospheric pressure information on furnace body (1) respectively, and install first temperature detection sensor (10) and second temperature detection sensor (13) that are used for corresponding temperature information in first heat preservation (52) and second heat preservation (51) respectively on furnace body (1), controller (14) are got push rod (803) with first material respectively, second material push rod (806), first temperature detection sensor (10), main pressure detection sensor (11), main temperature detection sensor (12), second temperature detection sensor (13), first solenoid valve (18), second solenoid valve (20), second pump (25), main air pump (28), first pump (29), heating rod (30), air supply pump (31), first circulating pump (38) and second circulating pump (39) electric connection.

2. The submerged entry type centralized melting furnace of claim 1, wherein: the dust removal box (5) comprises a heat insulation box body (505) fixedly installed with the fume collection cover (9) and used for collecting smoke dust, an air inlet channel (504) communicated with the feeding air guide channel (41) is arranged on the heat insulation box body (505), a dust filtering net (503) corresponding to the position of the connecting pipe (42) is installed on the heat insulation box body (505), a scraping brush push rod (501) electrically connected with the controller (14) is fixedly installed on the heat insulation box body (505), and a scraping blade (502) used for scraping the dust filtering net (503) is driven at the output end of the scraping brush push rod (501).

3. The submerged entry type centralized melting furnace of claim 1, wherein: the soaking device (4) comprises a heat conducting sleeve (402) sleeved on the heating rod (30), a main heat conducting sheet (401) is arranged on the heat conducting sleeve (402), and an auxiliary heat conducting sheet (403) is fixedly arranged on the main heat conducting sheet (401).

4. The submerged entry type centralized melting furnace of claim 1, wherein: the bottom of furnace body (1) is provided with strutting arrangement (7), and strutting arrangement (7) are including a pair of thermal-insulated backup pad (701), be provided with snubber block (703) between thermal-insulated backup pad (701), and be located between thermal-insulated backup pad (701) and snubber block (703) of upper strata and install support column (702).

5. The submerged entry type centralized melting furnace of claim 1, wherein: the feeding device (6) comprises a feeding channel (603) communicated with a feeding air guide channel (41), a first feeding push rod (602) and a second feeding push rod (605) are sequentially arranged on the feeding channel (603) from top to bottom, a first feeding valve plate (601) for sealing the feeding channel (603) is driven by the output end of the first feeding push rod (602), and a second feeding valve plate (604) for sealing the feeding channel (603) is driven by the output end of the second feeding push rod (605).

6. The submerged entry type centralized melting furnace of claim 1, wherein: the stirring motor (44) which is electrically connected with the controller (14) is fixedly arranged on the furnace body (1), and the output end of the stirring motor (44) is driven by a stirring paddle (45) which is inserted into the heat preservation cavity (46) for stirring.

7. The submerged entry type centralized melting furnace of claim 1, wherein: the utility model discloses a high-pressure furnace is characterized in that a first negative pressure pump (34) and a first inflator pump (33) which are communicated with a first negative pressure layer (53) are fixedly arranged on the furnace body (1), a first pressure detection sensor (32) which is used for detecting the air pressure in the first negative pressure layer (53) is arranged on the furnace body (1), a second negative pressure pump (35) and a second inflator pump (36) which are communicated with a second negative pressure layer (50) are fixedly arranged on the furnace body (1), a second pressure detection sensor (37) which is used for detecting the air pressure in the second negative pressure layer (50) is fixedly arranged on the furnace body (1), and the first negative pressure pump (34), the first inflator pump (33), the first pressure detection sensor (32), the second negative pressure pump (35), the second inflator pump (36) and the second pressure detection sensor (37) are electrically connected with a controller (14).

8. The submerged entry type centralized melting furnace of claim 1, wherein: the controller (14) is a PLC controller or an industrial personal computer, and the first heat exchanger (26) and the second heat exchanger (21) are both plate heat exchangers.

9. The submerged entry type centralized melting furnace of claim 1, wherein: the purifying device (27) is internally provided with a filter layer, a catalytic reaction layer and an activated carbon adsorption layer from an air inlet end to an air outlet end in sequence, and the heating rod (30) is composed of heat conducting ceramic, a heating coil and a graphite rod core from outside to inside in sequence.

10. The submerged entry type centralized melting furnace of claim 1, wherein: furnace body (1) is provided with discharging equipment (2) in the side department that corresponds getting material chamber (49), and discharging equipment (2) include with get material conduit (201) of chamber (49) intercommunication, be provided with opening decurrent discharge port (204) on conduit (201), and install heater (206) in the top of conduit (201), the end fixed mounting of conduit (201) has sealed push rod (207), and seals the output of push rod (207) and install heat conduction closed head (202) that are used for sealing discharge port (204), install in heat conduction closed head (202) with heat conduction piece (203) that heater (206) are connected, and heat insulating board (205) are installed to the end of heat conduction closed head (202), heater (206) and sealed push rod (207) all with controller (14) electric connection.