Formwork roasting furnace

Abstract

The utility model relates to the technical field of heat treatment equipment, in particular to a mold shell roasting furnace which comprises a rack and a furnace body arranged on the rack, a mold shell is roasted in the furnace body, and a heat regeneration device used for recovering heat generated in the furnace body is arranged on the rack. The driving mechanism is started to drive the heat return cover to cover the furnace body, and cold water in the heat exchange pipe absorbs heat in the furnace body and then is guided into the industrial hot water pool through the water outlet pipe for other work, so that the temperature in the furnace body is reduced, and heat energy resources in the furnace body are utilized while a worker conveniently takes out the mold shell; the energy waste is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat treatment equipment, and in particular to a shell baking furnace. Background Art

[0002] A shell baking furnace is a type of heat treatment equipment used in the foundry industry. It is primarily used to bake shells (i.e., casting molds) at high temperatures to increase their strength and heat resistance, preparing them for subsequent metal pouring. The shell baking furnace operates by using heating elements to raise the furnace temperature to the baking temperature of the shell material, solidifying the binder in the shell and forming a hard shell.

[0003] In the related art, reference can be made to the Chinese utility model patent with authorization announcement number CN210817329U, which discloses a mold shell baking furnace, including a movable insulating top cover, a handle, a sliding track, a convex slider, a support platform, an insulating side wall, a baking furnace bottom, a loading platform, a heating platform, a traction rope and an air inlet; the movable insulating top cover includes two oppositely arranged pieces, which are located at the top of the insulating side wall; the heating platform is fixed inside the baking furnace, and the loading platform is located above the heating platform. The lower end of the traction rope is fixed to the loading platform, and after passing through the static pulley, the other end is connected to the convex slider, and the movable insulating top cover moves horizontally to both sides to drive the loading platform to rise.

[0004] However, the above-mentioned mold baking furnace generates a large amount of heat during actual operation. Although this heat is isolated by the insulating side walls and the insulating top cover, it will still remain in the furnace body. Therefore, when the staff opens the furnace body to take out the baked mold, due to the temperature difference between the inside and outside of the furnace body, a heat wave will be generated in the furnace body and rush towards the staff, which is not only likely to cause injury to the staff, but also causes a large amount of heat energy resources to be wasted. Utility Model Content

[0005] In order to reduce the waste of thermal energy resources, the present application provides a shell baking furnace.

[0006] The present application provides a shell baking furnace, which adopts the following technical solution:

[0007] A shell baking furnace comprises a frame and a furnace body arranged on the frame, wherein the shell is baked in the furnace body, and a heat recovery device for recovering heat generated in the furnace body is arranged on the frame, wherein the heat recovery device comprises:

[0008] A heat recovery cover, the heat recovery cover is vertically slidably mounted on the frame;

[0009] A driving mechanism, the driving mechanism being arranged on the frame and being used to drive the regenerative cover to move, the regenerative cover covering the furnace body under the action of the driving mechanism;

[0010] A heat exchange tube, wherein a heat exchange cavity is provided inside the heat recovery cover, and the heat exchange tube is arranged in the heat exchange cavity;

[0011] The water inlet pipe and the water outlet pipe are both hoses. One end of the water inlet pipe is connected to the cold water source, and the other end of the water inlet pipe is connected to the heat recovery cover and extends into the heat exchange cavity to communicate with the heat exchange pipe. One end of the water outlet pipe is connected to the heat recovery cover and extends into the heat exchange cavity to communicate with the heat exchange pipe, and the other end of the water outlet pipe is connected to the industrial hot water pool. A water outlet valve is provided on the water outlet pipe.

[0012] By adopting the above technical solution, when the mold shell inside the furnace body is baked, the furnace body is opened, the driving mechanism is started to drive the heat recovery cover to cover the furnace body, and the cold water in the heat exchange tube absorbs the heat inside the furnace body and is discharged to the industrial hot water pool through the outlet pipe for other work, thereby reducing the internal temperature of the furnace body, making it easier for the staff to remove the mold shell, and at the same time utilizing the thermal energy resources inside the furnace body, reducing energy waste and improving work efficiency.

[0013] Optionally, the driving mechanism includes:

[0014] A driving block, wherein the driving block is vertically slidably arranged on the frame;

[0015] A driving screw, the driving screw being rotatably mounted on the frame and being threadedly connected to the driving block;

[0016] A driving motor is fixedly mounted on the frame and an output shaft is connected to the driving screw.

[0017] By adopting the above technical solution, the driving motor starts to drive the driving screw to rotate, the driving screw rotation drives the driving block to move, and the driving block movement drives the heat recovery cover to move, thereby realizing the movement of the heat recovery cover by controlling the driving motor.

[0018] Optionally, a plurality of furnace bodies are provided on the frame, a driving cylinder is provided on the driving block, the heat recovery cover is provided on the piston rod of the driving cylinder, and the heat recovery cover moves horizontally under the action of the piston rod of the driving cylinder.

[0019] By adopting the above technical solution, the driving oil cylinder is used to drive the regenerative cover to move horizontally, so that only one regenerative cover is needed to exchange heat for different furnace bodies, thereby greatly improving production efficiency at a lower production cost.

[0020] Optionally, the frame is provided with a positioning mechanism for positioning the heat regeneration cover in the vertical direction, and the positioning mechanism includes:

[0021] Infrared signal transmitters, wherein a plurality of infrared signal transmitters are provided, and the plurality of infrared signal transmitters are evenly distributed on the sides of each furnace body;

[0022] A signal receiver, wherein the signal receiver is arranged on the heat recovery cover;

[0023] An indicator light, the indicator light being arranged on the heat recovery cover;

[0024] A first controller is provided on the heat recovery cover and is electrically connected to the signal receiver and the indicator light.

[0025] By adopting the above technical solution, the infrared signal transmitter emits an infrared signal vertically upward. When the heat recovery cover moves horizontally to above the furnace body on one side of the infrared signal transmitter, the signal receiver receives the infrared signal emitted by the infrared signal transmitter, and then the signal receiver transmits the received signal to the first controller. The first controller controls the indicator light to light up. When the indicator light lights up, it means that the heat recovery cover is aligned with the furnace body above the furnace body. When the staff sees the indicator light up, they can stop the heat recovery cover from continuing to move horizontally, thereby completing the work of positioning the horizontal position of the heat recovery cover.

[0026] Optionally, a smoking hole is provided in the heat recovery cover, and a smoking pipe connected to the smoking hole is provided on the heat recovery cover.

[0027] By adopting the above technical solution, since a lot of smoke will be generated in the furnace body when the mold shell is baked, and these smokes often contain many harmful substances, in order to reduce the probability of smoke polluting the working environment, a smoking hole is opened on the heat recovery hood and a smoking pipe is set. When the heat recovery hood covers the furnace body to cool the inside of the furnace body, the smoke in the furnace body can be discharged into the smoking pipe through the smoking hole for centralized harmless treatment and discharge, thereby reducing the probability of smoke diffusion in the working environment causing harm to the health of workers.

[0028] Optionally, the smoking hole is opened on one end of the heat recovery cover at the connection point between the water inlet pipe and the heat exchange pipe, and the smoking pipe is connected to the inside of the heat exchange cavity and is located on one end of the heat recovery cover at the connection point between the water outlet pipe and the heat exchange pipe.

[0029] By adopting the above technical solution, since the flue gas in the furnace body also carries a large amount of heat, the smoking hole and the smoke extraction pipe are respectively arranged at both ends of the heat recovery hood, so that the flue gas can enter the heat exchange cavity and fully contact the heat exchange tube, thereby improving the heat exchange effect of the heat exchange tube.

[0030] Optionally, a temperature sensor is provided in the heat exchange tube, and a second controller is provided on the rack, and the second controller is electrically connected to the temperature sensor and the water outlet valve.

[0031] By adopting the above technical solution, the temperature sensor senses the water temperature in the heat exchange tube. When the water temperature in the heat exchange tube reaches a high level, it means that the continued heat exchange effect of the heat exchange tube is limited. Then the second controller controls the water outlet valve to open and discharge the hot water, thereby ensuring that the heat exchange tube can always maintain good heat exchange capacity.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The drive mechanism starts to drive the heat recovery cover to cover the furnace body. The cold water in the heat exchange tube absorbs the heat inside the furnace body and is then discharged to the industrial hot water pool through the outlet pipe for other work. This reduces the temperature inside the furnace body, making it easier for workers to remove the mold shell. At the same time, it also utilizes the thermal energy resources inside the furnace body, reducing energy waste and improving work efficiency.

[0034] 2. The drive motor is started to drive the driving screw to rotate, the driving screw rotation drives the driving block to move, the driving block movement drives the heat recovery cover to move, thereby realizing the movement of the heat recovery cover by controlling the drive motor;

[0035] 3. The temperature sensor senses the water temperature in the heat exchange tube. When the water temperature in the heat exchange tube reaches a high level, it means that the heat exchange effect of the heat exchange tube is limited. Then the second controller controls the water outlet valve to open and discharge the hot water, thereby ensuring that the heat exchange tube can always maintain good heat exchange capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of this application;

[0037] Figure 2 It is a structural diagram of the heat recovery device and positioning mechanism in this application.

[0038] Figure numerals: 1. Frame; 11. Furnace body; 12. Heat exchange cavity; 13. Water outlet valve; 2. Heat recovery device; 21. Heat recovery cover; 22. Driving mechanism; 23. Heat exchange tube; 24. Water inlet pipe; 25. Water outlet pipe; 26. Driving block; 27. Driving screw; 28. Driving motor; 29. ​​Driving cylinder; 32. Second controller; 34. Smoke exhaust pipe; 4. Positioning mechanism; 41. Infrared signal transmitter; 42. Signal receiver; 43. Indicator light; 44. First controller. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1 -Attached Figure 2 This application is described in further detail.

[0040] The embodiment of the present application discloses a formwork baking furnace.

[0041] Reference Figure 1 The shell baking furnace includes a frame 1 and a furnace body 11 fixedly mounted on the frame 1, and the shell is baked in the furnace body 11. A heat recovery device 2 for recovering heat generated in the furnace body 11 is provided on the frame 1.

[0042] Reference Figure 1 and Figure 2 The regenerative device 2 includes a regenerative cover 21, a drive mechanism 22, a heat exchange tube 23, a water inlet pipe 24, and a water outlet pipe 25. The regenerative cover 21 is vertically slidably mounted on the frame 1 via the drive mechanism 22. The drive mechanism 22 includes a drive block 26, a drive screw 27, and a drive motor 28.

[0043] Reference Figure 2 A drive block 26 is mounted vertically and slidably on the frame 1. A drive cylinder 29 is fixedly mounted on the upper surface of the drive block 26. The piston rod of the drive cylinder 29 is arranged horizontally. The regenerative cover 21 is fixedly mounted on the piston rod of the drive cylinder 29. A drive screw 27 is rotatably mounted on the frame 1 and is arranged vertically. The drive screw 27 is threadedly connected to the drive block 26. A drive motor 28 is fixedly mounted on the frame 1, and its output shaft is connected to the drive screw 27.

[0044] Reference Figure 2 After the driving cylinder 29 is started and drives the heat recovery cover 21 to move above the furnace body 11, the driving motor 28 is started and drives the driving screw 27 to rotate. The driving screw 27 rotates and drives the driving block 26 to move. The driving block 26 moves and drives the heat recovery cover 21 to move downward. The heat recovery cover 21 moves downward to cover the furnace body 11.

[0045] Reference Figure 2 The regenerative cover 21 defines a heat exchange cavity 12. A heat exchange tube 23 is fixedly mounted on the regenerative cover 21 and located within the heat exchange cavity 12. Both the water inlet pipe 24 and the water outlet pipe 25 are flexible hoses. One end of the water inlet pipe 24 is connected to a cold water source. The other end of the water inlet pipe 24 is connected to the regenerative cover 21 and extends into the heat exchange cavity 12, connecting to the heat exchange tube 23. One end of the water outlet pipe 25 is connected to the regenerative cover 21 and extends into the heat exchange cavity 12, connecting to the heat exchange tube 23. The other end of the water outlet pipe 25 is connected to the industrial hot water tank. A water outlet valve 13 is provided on the water outlet pipe 25.

[0046] Reference Figure 2 Water inlet pipe 24 injects cold water into heat exchange tube 23, which then exchanges heat with the interior of furnace body 11. Hot water is then discharged through outlet pipe 25 into an industrial hot water pool for use in other industrial production processes. This lowers the temperature inside furnace body 11, making it easier for workers to remove the mold shells. It also utilizes the thermal energy within furnace body 11, reducing energy waste and improving work efficiency.

[0047] Reference Figure 2A temperature sensor is fixedly mounted within the heat exchange tube 23. A second controller 32 is fixedly mounted on the rack 1 and is electrically connected to both the temperature sensor and the water outlet valve 13. The temperature sensor senses the water temperature within the heat exchange tube 23. When the water temperature within the heat exchange tube 23 reaches a high level, indicating that the heat exchange efficiency of the heat exchange tube 23 is limited, the second controller 32 controls the water outlet valve 13 to open and discharge the hot water, thereby ensuring that the heat exchange tube 23 maintains its optimal heat exchange capacity.

[0048] Reference Figure 2 A vertical smoking hole is provided on the inner top wall of the regenerative cover 21, communicating with the interior of the heat exchange cavity 12. The smoking hole is located within the regenerative cover 21, at one end where the water inlet pipe 24 connects to the heat exchange tube 23. A smoke extraction pipe 34 is fixedly mounted on the upper surface of the regenerative cover 21, communicating with the interior of the heat exchange cavity 12. The smoke extraction pipe 34 is located at one end of the regenerative cover 21 where the water outlet pipe 25 connects to the heat exchange tube 23. Smoke enters the heat exchange cavity 12 through the smoking hole, fully contacts the heat exchange tube 23, and is then discharged through the smoke extraction pipe 34.

[0049] Reference Figure 1 and Figure 2 The furnace bodies 11 are provided with a plurality of furnace bodies 11, and the plurality of furnace bodies 11 are evenly distributed on the frame 1 along the moving direction of the piston rod of the driving oil cylinder 29. The frame 1 is provided with a positioning mechanism 4, which positions the position of the reheat cover 21 above each furnace body 11.

[0050] Reference Figure 1 and Figure 2 The positioning mechanism 4 includes an infrared signal transmitter 41, a signal receiver 42, an indicator light 43 and a first controller 44. There are a number of infrared signal transmitters 41, and the infrared signal transmitters 41 are evenly distributed and fixedly installed on the side of each furnace body 11 and emit infrared signals vertically upward. The signal receiver 42 is fixedly installed on the outer wall of the heat recovery cover 21. When the heat recovery cover 21 moves to directly above the furnace body 11, the signal receiver 42 and the infrared signal transmitter 41 are located in the same vertical position. The indicator light 43 is fixedly installed on the upper surface of the heat recovery cover 21. The first controller 44 is fixedly installed on the outer wall of the heat recovery cover 21 and is electrically connected to the signal receiver 42 and the indicator light 43.

[0051] Reference Figure 2The infrared signal transmitter 41 emits an infrared signal vertically upward. When the reheating cover 21 moves horizontally to above the furnace body 11 on one side of the infrared signal transmitter 41, the signal receiver 42 receives the infrared signal emitted by the infrared signal transmitter 41, and then the signal receiver 42 transmits the received signal to the first controller 44. The first controller 44 controls the indicator light 43 to light up. When the indicator light 43 lights up, it means that the reheating cover 21 is aligned with the furnace body 11 above the furnace body 11. When the staff sees the indicator light 43 light up, they can stop the reheating cover 21 from continuing to move horizontally, thereby completing the work of positioning the horizontal position of the reheating cover 21.

[0052] The working principle of the embodiment of this application is as follows:

[0053] When the mold shell inside the furnace body 11 is baked, the furnace body 11 is opened, the drive motor 28 is started, and the heat recovery cover 21 is driven to cover the furnace body 11. The cold water in the heat exchange tube 23 absorbs the heat inside the furnace body 11 and is discharged to the industrial hot water pool through the outlet pipe 25 for other work, thereby reducing the internal temperature of the furnace body 11, making it easier for the staff to remove the mold shell, and also utilizing the thermal energy resources inside the furnace body 11, reducing energy waste and improving work efficiency.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A shell baking furnace, characterized in that: The invention comprises a frame (1) and a furnace body (11) arranged on the frame (1), wherein the mold shell is baked in the furnace body (11), and a heat recovery device (2) for recovering heat generated in the furnace body (11) is arranged on the frame (1), and the heat recovery device (2) comprises: A heat recovery cover (21), wherein the heat recovery cover (21) is vertically slidably mounted on the frame (1); A driving mechanism (22), the driving mechanism (22) being arranged on the frame (1) and being used to drive the regenerative cover (21) to move, wherein the regenerative cover (21) covers the furnace body (11) under the action of the driving mechanism (22); A heat exchange tube (23), wherein a heat exchange cavity (12) is provided inside the heat recovery cover (21), and the heat exchange tube (23) is arranged in the heat exchange cavity (12); A water inlet pipe (24) and a water outlet pipe (25), both of which are hoses, one end of the water inlet pipe (24) is connected to a cold water source, the other end of the water inlet pipe (24) is connected to a heat recovery cover (21) and extends into a heat exchange cavity (12) to communicate with a heat exchange pipe (23), one end of the water outlet pipe (25) is connected to a heat recovery cover (21) and extends into a heat exchange cavity (12) to communicate with a heat exchange pipe (23), the other end of the water outlet pipe (25) is connected to an industrial hot water pool, and a water outlet valve (13) is provided on the water outlet pipe (25).

2. A formwork baking furnace according to claim 1, characterized in that: The driving mechanism (22) comprises: A driving block (26), wherein the driving block (26) is vertically slidably arranged on the frame (1); A driving screw rod (27), wherein the driving screw rod (27) is rotatably arranged on the frame (1) and is threadably connected to the driving block (26); A driving motor (28) is fixedly mounted on the frame (1) and has an output shaft connected to a driving screw (27).

3. The formwork baking furnace according to claim 2, characterized in that: The furnace body (11) is provided with a plurality of them on the frame (1); a driving cylinder (29) is provided on the driving block (26); the heat recovery cover (21) is provided on the piston rod of the driving cylinder (29); and the heat recovery cover (21) moves horizontally under the action of the piston rod of the driving cylinder (29).

4. The formwork baking furnace according to claim 3, characterized in that: The frame (1) is provided with a positioning mechanism (4) for positioning the heat recovery cover (21) in the vertical direction, and the positioning mechanism (4) comprises: Infrared signal transmitters (41), wherein a plurality of infrared signal transmitters (41) are provided, and the plurality of infrared signal transmitters (41) are evenly distributed on the sides of each furnace body (11); a signal receiver (42), wherein the signal receiver (42) is arranged on the heat recovery cover (21); an indicator light (43), wherein the indicator light (43) is arranged on the heat recovery cover (21); A first controller (44) is provided on the heat recovery cover (21) and is electrically connected to the signal receiver (42) and the indicator light (43).

5. The formwork baking furnace according to claim 1, characterized in that: A smoking hole is provided in the heat recovery cover (21), and a smoking pipe (34) communicating with the smoking hole is provided on the heat recovery cover (21).

6. The formwork baking furnace according to claim 5, characterized in that: The smoking hole is provided in the heat recovery cover (21) at one end thereof at the connection point between the water inlet pipe (24) and the heat exchange pipe (23); the smoking pipe (34) is connected to the interior of the heat exchange cavity (12) and is located at one end thereof at the connection point between the water outlet pipe (25) and the heat exchange pipe (23) on the heat recovery cover (21).

7. The formwork baking furnace according to claim 1, characterized in that: A temperature sensor is provided in the heat exchange tube (23), and a second controller (32) is provided on the frame (1). The second controller (32) is electrically connected to the temperature sensor and the water outlet valve (13).

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