Energy-saving annealing furnace

Abstract

The energy-saving annealing furnace comprises a furnace body, a heat preservation layer is arranged on the outer wall of the furnace body in a surrounding mode, a moving table is arranged at the bottom of an inner cavity of the furnace body, a limiting groove is formed in the inner wall of the bottom of the furnace body, and a driving mechanism is arranged in the limiting groove; the driving mechanism comprises a lead screw, a moving block and a servo motor, the inner wall of the middle of the limiting groove is connected with the lead screw through a bearing, the moving block is embedded in the limiting groove, the top of the moving block is connected with the moving table, the lead screw rotates to drive the moving block to do translational motion, and the moving block moves to drive the moving table to do synchronous translational motion; the electric telescopic rod can drive the separation guide plate to do translational motion, the separation guide plate moves in the shell to drive the scraping plate and the movable sleeve to do translational motion, the scraping plate moves to scrape dirt on the inner wall of the shell, the movable sleeve moves to scrape impurities on the outer wall of the condensation pipe, and the phenomenon that the condensation effect is affected due to accumulation of the impurities in the device is avoided.

Description

Technical Field

[0001] The present application relates to the field of annealing furnaces, and more specifically, to an energy-saving annealing furnace. Background Art

[0002] Annealing furnace is a metal heat treatment process that slowly heats metal materials or parts to a certain temperature in different annealing furnaces, keeps them warm for a period of time, and then cools them at an appropriate speed. The purpose is to soften the materials or workpieces that have been cast, forged, welded or cut, reduce hardness, improve plasticity and toughness, make the chemical composition uniform, remove residual stress, or obtain the expected physical properties; After searching, the existing patent (publication number: CN104419807A) discloses a high-efficiency annealing furnace, including a furnace body, a furnace chamber surrounded by a thermal insulation layer is provided in the furnace body, a furnace mouth connected to the furnace chamber is provided on the furnace body, a furnace cover is provided on the furnace mouth, a heating device is provided in the furnace chamber, the heating device is connected to a heating control device, and the heating device includes a heating silicon carbon rod provided in the furnace chamber; the heating device includes a heating silicon carbon rod, the heating silicon carbon rod has good heating capacity, small expansion coefficient, is not easy to deform under high temperature conditions, has good chemical stability and high corrosion resistance. Moreover, the silicon carbon rod electric heating element has a long service life, is easy to install and maintain; it can be used in conjunction with an automatic control system to obtain precise temperature control effects and keep the temperature constant. In the process of realizing this application, the inventor found that the prior art has the following problems: At present, when the annealing furnace is heating the workpiece, the gas in the furnace may react chemically with the iron element on the surface of the workpiece to form oxide scale. When used for a long time, the oxide scale is easy to accumulate in the furnace and is difficult to be discharged. At the same time, it does not have the function of heat recovery, which easily leads to energy waste in the cooling process. Therefore, an energy-saving annealing furnace is proposed to solve the above problems. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present application provides an energy-saving annealing furnace to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned objectives, the present application provides the following technical solutions: an energy-saving annealing furnace, comprising a furnace body, an outer wall of the furnace body is surrounded by an insulation layer, a moving platform is arranged at the bottom of the inner cavity of the furnace body, a limiting groove is arranged on the bottom inner wall of the furnace body, a driving mechanism is arranged inside the limiting groove, the driving mechanism comprises a screw rod, a moving block and a servo motor, the middle inner wall of the limiting groove is connected to the screw rod through a bearing, the outer wall of one side of the screw rod is threadedly connected to the moving block, the moving block is embedded in the limiting groove, the top of the moving block is connected to the moving platform, a servo motor is arranged on the outer wall of one side of the furnace body, the output end of the servo motor is connected to the screw rod, the servo motor drives the screw rod to rotate, the rotation of the screw rod drives the moving block to perform translational motion, and the movement of the moving block drives the moving platform to perform synchronous translational motion.

[0005] Preferably, an empty groove is provided in the middle of the upper surface of the movable platform, and a storage grid is connected to the top edge of the movable platform by bolts, a cleaning scraper is embedded in one side of the inner part of the empty groove, and sliding grooves are provided on the inner walls on both sides of the empty groove, and sliders are connected to the outer walls on both sides of the cleaning scraper, and the sliders are embedded in the sliding grooves, one end of the cleaning scraper is connected to a pull rod, and the end of the pull rod away from the cleaning scraper passes through the empty groove and is connected to a pull block.

[0006] Preferably, a furnace door is provided on one outer wall of the furnace body, the furnace door is connected to the furnace body by a hinge, electric heating plates are arranged on the inner wall of the furnace body, and a temperature sensor is provided on one side of the top inner wall of the furnace body.

[0007] Preferably, a circulating exhaust port is connected to the center of the top of the furnace body, and a gas pipe is connected to the top of the circulating exhaust port.

[0008] Preferably, the middle portion of the air pipe is connected to a fan pump, an activated carbon filter cartridge is provided on one side of the fan pump, and the activated carbon filter cartridge is also connected to the air pipe.

[0009] Preferably, one end of the air pipe away from the circulating exhaust port is connected to an electric three-way valve.

[0010] Preferably, two ends of the electric three-way valve away from the air pipe are respectively connected to an air inlet pipe and a heat exchange pipe, and one end of the air inlet pipe away from the electric three-way valve passes through the furnace body and is connected to an air inlet No. 1.

[0011] Preferably, a heat exchange water tank is provided on one side of the furnace body, and the end of the heat exchange tube away from the electric three-way valve passes through the heat exchange water tank and is connected to the furnace body, and a No. 2 air inlet is provided at the connection point between the heat exchange tube and the furnace body.

[0012] Preferably, one side of the top of the heat exchange water tank is connected to a water replenishment interface, and one end of the bottom of the heat exchange water tank is connected to a drainage pipe.

[0013] Preferably, a cooling water channel is arranged around the inner wall of the furnace body, both ends of the cooling water channel extend to the outside of the furnace body and are connected to the heat exchange water tank, and a water pump is arranged at one end of the cooling water channel.

[0014] Technical effects and advantages of this application: Compared with the prior art, a small amount of oxide scale that appears on the workpiece during heating in this energy-saving annealing furnace can pass through the storage grid and fall into the empty slot for collection, thereby preventing the oxide scale from being scattered randomly inside the furnace body and being difficult to clean. At the same time, when the oxide scale needs to be cleaned uniformly, the pull block box can be pulled out, and the movement of the pull block drives the pull rod to move horizontally, thereby driving the cleaning scraper to move synchronously. The cleaning scraper moves horizontally along the direction of the slide slot through the slider, thereby playing a limiting role. The oxide scale collected in the cavity can be scraped out to the outside through the cleaning scraper for unified cleaning, thereby preventing the oxide scale from accumulating in the furnace body and being difficult to discharge.

[0015] Compared with the prior art, this energy-saving annealing furnace can connect the air pipe and the heat exchange pipe through the electric three-way valve when the workpiece is heated and the insulation is completed and needs to be cooled. The air flow is drawn into the air pipe through the fan pump and then transferred to the heat exchange pipe through the electric three-way valve. The heat exchange pipe passes through the heat exchange box and exchanges heat with the water source inside the heat exchange box, so that the high-temperature air flow is converted into low-temperature air flow and is discharged into the furnace body through the No. 2 air inlet, thereby slowly cooling the furnace body. At the same time, after the heat exchange, the water temperature in the water exchange water tank can be gradually increased to generate hot water for use in other purposes, thereby playing the role of energy recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this application.

[0017] Figure 2 This is a side view of the structure of the present application.

[0018] Figure 3 This is a schematic diagram of the driving mechanism structure of this application.

[0019] Figure 4 This is a schematic diagram of the connection structure between the cleaning scraper and the empty slot for this application.

[0020] The accompanying drawings are marked as follows: 1. furnace body; 2. insulation layer; 3. moving platform; 4. limiting groove; 5. driving mechanism; 6. screw rod; 7. moving block; 8. servo motor; 9. empty slot; 10. storage grid; 11. cleaning scraper; 12. slide groove; 13. slider; 14. pull rod; 15. pull block; 16. furnace door; 17. electric heating plate; 18. temperature sensor; 19. circulating exhaust port; 20. air pipe; 21. fan pump; 22. activated carbon filter cartridge; 23. electric three-way valve; 24. air inlet pipe; 25. No. 1 air inlet; 26. heat exchange pipe; 27. heat exchange water tank; 28. No. 2 air inlet; 29. ​​water supply interface; 30. drainage pipe; 31. cooling water channel; 32. water pump. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0022] As attached Figures 1 to 3 An energy-saving annealing furnace shown includes a furnace body 1, an outer wall of the furnace body 1 is surrounded by an insulation layer 2, a moving platform 3 is arranged at the bottom of the inner cavity of the furnace body 1, a limiting groove 4 is arranged on the bottom inner wall of the furnace body 1, a driving mechanism 5 is arranged inside the limiting groove 4, the driving mechanism 5 includes a screw rod 6, a moving block 7 and a servo motor 8, the middle inner wall of the limiting groove 4 is connected with the screw rod 6 through a bearing, the outer wall on one side of the screw rod 6 is threadedly connected with the moving block 7, the moving block 7 is embedded in the limiting groove 4, the top of the moving block 7 is connected to the moving platform 3, a servo motor 8 is arranged on the outer wall on one side of the furnace body 1, the output end of the servo motor 8 is connected to the screw rod 6, the servo motor 8 drives the screw rod 6 to rotate, the rotation of the screw rod 6 drives the moving block 7 to perform translational motion, and the movement of the moving block 7 drives the moving platform 3 to perform synchronous translational motion.

[0023] Among them: the furnace body 1 plays a role of fixing and placing, and the insulation layer 2 plays a role of heat insulation and heat preservation. When the annealed workpiece needs to be taken out, the servo motor 8 can be used to drive the screw 6 to rotate, and the rotation of the screw 6 drives the moving block 7 to perform a translational movement, and the movement of the moving block 7 drives the moving platform 3 to perform a synchronous translational movement, so as to facilitate the removal of the storage grid 10 and the workpiece, thereby facilitating the removal of the workpiece, thereby reducing the situation of reaching into the furnace body 1 to take out the workpiece and causing burns. Example

[0024] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 4As shown, see the following description for details: As a preferred embodiment, an empty groove 9 is provided in the middle of the upper surface of the movable platform 3, and a storage grid 10 is connected to the top edge of the movable platform 3 by bolts. A cleaning scraper 11 is embedded on one side of the inner part of the empty groove 9, and slide grooves 12 are provided on the inner walls on both sides of the empty groove 9. Slide blocks 13 are connected to the outer walls on both sides of the cleaning scraper 11, and the slide blocks 13 are embedded in the slide grooves 12. A pull rod 14 is connected to one end of the cleaning scraper 11, and the end of the pull rod 14 away from the cleaning scraper 11 passes through the empty groove 9 and is connected to a pull block 15; further, the storage grid 10 is used to support the workpiece and has a grid structure on the surface to facilitate the oxidation of the workpiece during the heating process. During the collection and cleaning work, a small amount of oxide scale that appears on the workpiece during heating can pass through the storage grid 10 and fall into the empty slot 9 for collection, thereby preventing the oxide scale from being scattered randomly inside the furnace body 1 and being difficult to clean. At the same time, when the oxide scale needs to be cleaned uniformly, the pull block 15 can be pulled out of the box. The movement of the pull block 15 drives the pull rod 14 to perform a translational movement, thereby driving the cleaning scraper 11 to perform a synchronous translational movement. The cleaning scraper 11 translates along the direction of the slide slot 12 through the slider 13, thereby playing a limiting role. The oxide scale collected in the empty slot 9 can be scraped out to the outside for uniform cleaning through the cleaning scraper 11, thereby preventing the oxide scale from accumulating in the furnace body 1 and being difficult to discharge.

[0025] As a preferred embodiment, a furnace door 16 is provided on one side outer wall of the furnace body 1, and the furnace door 16 is connected to the furnace body 1 by a hinge. Electric heating plates 17 are arranged on the inner wall of the furnace body 1, and a temperature sensor 18 is provided on one side of the top inner wall of the furnace body 1; further, closing the furnace door 16 plays a sealing role to facilitate heating, and the electric heating plate 17 can heat the workpiece in the furnace body 1 when it is energized. The temperature in the furnace body 1 can be monitored in real time by the temperature sensor 18 to facilitate accurate annealing of the workpiece.

[0026] As a preferred embodiment, a circulating exhaust port 19 is connected to the top center of the furnace body 1, and an air pipe 20 is connected to the top of the circulating exhaust port 19; further, the high-temperature airflow in the furnace can be conducted to the air pipe 20 through the circulating exhaust port 19.

[0027] As a preferred embodiment, the middle part of the air pipe 20 is connected to a fan pump 21, and an activated carbon filter cartridge 22 is provided on one side of the fan pump 21, and the activated carbon filter cartridge 22 is also connected to the air pipe 20; further, the fan pump 21 can extract and circulate the high-temperature airflow in the furnace body 1 through the air pipe 20 and the circulating exhaust port 19, and the activated carbon filter cartridge 22 can absorb the humid air in the airflow to keep the furnace body 1 dry.

[0028] As a preferred embodiment, one end of the air pipe 20 away from the circulating exhaust port 19 is connected to an electric three-way valve 23 ; further, the electric three-way valve 23 plays a connecting role, and the air inlet end of the electric three-way valve 23 is connected to the air pipe 20 .

[0029] As a preferred embodiment, the two ends of the electric three-way valve 23 away from the air pipe 20 are respectively connected to the air intake pipe 24 and the heat exchange pipe 26, and the end of the air intake pipe 24 away from the electric three-way valve 23 passes through the furnace body 1 and is connected to the No. 1 air inlet 25; further, during the heating process, the electric three-way valve 23 is used to control the air pipe 20 and the air intake pipe 24 to be connected, and starting the fan pump 21 can draw the high-temperature airflow in the furnace body 1 into the air intake pipe 24 through the air pipe 20 and the circulating exhaust port 19, and then return it to the furnace body 1 through the No. 1 air inlet 25, thereby realizing the heat flow circulation of the furnace body 1 to facilitate uniform heating of the workpiece, thereby improving the uniformity of heating of the workpiece.

[0030] As a preferred embodiment, a heat exchange water tank 27 is provided on one side of the furnace body 1, and one end of the heat exchange tube 26 away from the electric three-way valve 23 passes through the heat exchange water tank 27 and is connected to the furnace body 1, and a No. 2 air inlet 28 is provided at the connection between the heat exchange tube 26 and the furnace body 1; further, when the workpiece is heated and the insulation is completed and it needs to be cooled, the electric three-way valve 23 can be used to control the air pipe 20 to be connected with the heat exchange tube 26, and the air flow is drawn into the air pipe 20 through the fan pump 21 and then transferred to the heat exchange tube 26 through the electric three-way valve 23. The heat exchange tube 26 passes through the heat exchange box 27 and exchanges heat with the water source inside the heat exchange box 27, so that the high-temperature airflow is converted into a low-temperature airflow and then discharged into the furnace body 1 through the No. 2 air inlet 28, thereby performing slow cooling of the furnace body 1. At the same time, after the heat exchange, the water temperature in the heat exchange water tank 1 can be gradually increased to generate hot water for use in other purposes, thereby playing the role of energy recovery.

[0031] As a preferred embodiment, a top side of the hot water exchange tank 27 is connected to a water replenishment interface 29, and a bottom end of the hot water exchange tank 27 is connected to a drainage pipe 30; further, the water in the hot water exchange tank 27 can be replenished through the water replenishment interface 29, and the heated water can be discharged through the drainage pipe 30 for subsequent use in other aspects.

[0032] As a preferred embodiment, a cooling water channel 31 is arranged around the inner wall of the furnace body 1, and both ends of the cooling water channel 31 extend to the outside of the furnace body 1 and are connected to the water exchange tank 27, and a water pump 32 is arranged at one end of the cooling water channel 31; further, during the cooling process, the water source in the water exchange tank 27 can be pumped into the cooling water channel 31 for circulation through the water pump 32, and at the same time, the cooling water channel 31 is arranged around the inner wall of the furnace body 1 to take away the heat in the furnace body 1 and further heat the water source inside the water exchange tank. In conjunction with the heat exchange pipe 26, heat energy can be recovered while cooling.

[0033] The working process of the present application is as follows: first, the workpiece to be annealed is placed on the top of the storage grid 10, and the electric heating plate 17 is energized to heat the workpiece in the furnace body 1. The temperature in the furnace body 1 can be detected in real time by the temperature sensor 18 to facilitate accurate annealing of the workpiece. During the heating process, the electric three-way valve 23 is used to control the air pipe 20 to be connected with the air inlet pipe 24, and the fan pump 21 is started to extract the high-temperature airflow in the furnace body 1 through the air pipe 20 and the circulating exhaust port 19 into the air inlet pipe 24, and then return it to the furnace body 1 through the No. 1 air inlet 25, thereby realizing the heat flow circulation of the furnace body 1 to facilitate uniform heating of the workpiece, thereby improving the uniformity of heating of the workpiece; When the workpiece is heated and the insulation is completed and it needs to be cooled, the electric three-way valve 23 can be used to control the air pipe 20 to be connected with the heat exchange pipe 26. The air flow is drawn into the air pipe 20 through the fan pump 21 and then transferred to the heat exchange pipe 26 through the electric three-way valve 23. The heat exchange pipe 26 passes through the heat exchange box 27 and exchanges heat with the water source inside the heat exchange box 27, so that the high-temperature air flow is converted into a low-temperature air flow and then discharged into the furnace body 1 through the No. 2 air inlet 28, thereby slowly cooling the furnace body 1. At the same time, after the heat exchange, the water temperature in the water exchange water tank 1 can be gradually increased to generate hot water for use in other purposes, which plays the role of energy recovery. At the same time, during the cooling process, the water in the water exchange water tank 27 can be pumped through the water pump 32 Water is extracted into the cooling water channel 31 for circulation. At the same time, the cooling water channel 31 is arranged around the inner wall of the furnace body 1 to take away the heat in the furnace body 1 and further heat the water in the water exchange water tank. In conjunction with the heat exchange tube 26, heat energy can be recovered while cooling. When the annealed workpiece needs to be taken out, the servo motor 8 can be used to drive the screw rod 6 to rotate. The rotation of the screw rod 6 drives the moving block 7 to perform a translational movement. The movement of the moving block 7 drives the moving platform 3 to perform a synchronous translational movement, so as to facilitate the removal of the storage rack 10 and the workpiece, thereby facilitating the removal of the workpiece, thereby reducing the situation of reaching into the furnace body 1 to take out the workpiece and causing burns. The above is the working principle of this energy-saving annealing furnace.

Claims

1. An energy-saving annealing furnace, comprising a furnace body (1), characterized in that: The outer wall of the furnace body (1) is surrounded by a heat-insulating layer (2); the bottom of the inner cavity of the furnace body (1) is provided with a moving platform (3); the inner wall of the bottom of the furnace body (1) is provided with a limiting groove (4); a driving mechanism (5) is provided inside the limiting groove (4); the driving mechanism (5) comprises a screw rod (6), a moving block (7) and a servo motor (8); the inner wall of the middle part of the limiting groove (4) is connected to the screw rod (6) via a bearing; the outer wall of one side of the screw rod (6) is threadedly connected to the moving block (7), the moving block (7) is embedded in the limiting groove (4), the top of the moving block (7) is connected to the moving platform (3), a servo motor (8) is arranged on one side outer wall of the furnace body (1), the output end of the servo motor (8) is connected to the screw rod (6), the servo motor (8) drives the screw rod (6) to rotate, the rotation of the screw rod (6) drives the moving block (7) to perform translational movement, and the movement of the moving block (7) drives the moving platform (3) to perform synchronous translational movement.

2. An energy-saving annealing furnace according to claim 1, characterized in that: A hollow groove (9) is provided in the middle of the upper surface of the movable platform (3), and a storage grid (10) is connected to the top edge of the movable platform (3) by bolts. A cleaning scraper (11) is embedded in one side of the inner part of the hollow groove (9), and slide grooves (12) are provided on both sides of the inner wall of the hollow groove (9). Slide blocks (13) are connected to both sides of the outer wall of the cleaning scraper (11), and the slide blocks (13) are embedded in the slide grooves (12). One end of the cleaning scraper (11) is connected to a pull rod (14), and the end of the pull rod (14) away from the cleaning scraper (11) passes through the hollow groove (9) and is connected to a pull block (15).

3. The energy-saving annealing furnace according to claim 1, characterized in that: A furnace door (16) is provided on one outer wall of the furnace body (1), and the furnace door (16) is connected to the furnace body (1) via a hinge. Electric heating plates (17) are arranged on the inner wall of the furnace body (1), and a temperature sensor (18) is provided on one side of the top inner wall of the furnace body (1).

4. The energy-saving annealing furnace according to claim 1, characterized in that: The center of the top of the furnace body (1) is connected to a circulating exhaust port (19), and the top of the circulating exhaust port (19) is connected to an air pipe (20).

5. The energy-saving annealing furnace according to claim 4, characterized in that: The middle of the air pipe (20) is connected to a fan pump (21), and an activated carbon filter cartridge (22) is provided on one side of the fan pump (21), and the activated carbon filter cartridge (22) is also connected to the air pipe (20).

6. The energy-saving annealing furnace according to claim 5, characterized in that: One end of the air pipe (20) away from the circulating exhaust port (19) is connected to an electric three-way valve (23).

7. The energy-saving annealing furnace according to claim 6, characterized in that: The two ends of the electric three-way valve (23) away from the air pipe (20) are respectively connected to an air intake pipe (24) and a heat exchange pipe (26); one end of the air intake pipe (24) away from the electric three-way valve (23) passes through the furnace body (1) and is connected to a first air intake port (25).

8. The energy-saving annealing furnace according to claim 7, characterized in that: A heat exchange water tank (27) is provided on one side of the furnace body (1); an end of the heat exchange tube (26) away from the electric three-way valve (23) passes through the heat exchange water tank (27) and is connected to the furnace body (1); a second air inlet (28) is provided at the connection point between the heat exchange tube (26) and the furnace body (1).

9. An energy-saving annealing furnace according to claim 8, characterized in that: One side of the top of the heat exchange water tank (27) is connected to a water supply interface (29), and one end of the bottom of the heat exchange water tank (27) is connected to a drainage pipe (30).

10. The energy-saving annealing furnace according to claim 9, characterized in that: A cooling water channel (31) is arranged around the inner wall of the furnace body (1), both ends of the cooling water channel (31) extend to the outside of the furnace body (1) and are connected to the heat exchange water tank (27), and a water pump (32) is arranged at one end of the cooling water channel (31).

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