Automatic opening and closing device for furnace cover of holding furnace

Abstract

The utility model relates to the technical field of opening and closing of furnace covers of holding furnaces, and discloses an automatic opening and closing device for a furnace cover of a holding furnace, which comprises a holding furnace, a furnace mouth is arranged at the top of the holding furnace, and a furnace cover is mounted at the top of the furnace mouth. When a steel wire rope in the opening and closing mechanism is wound by driving the winch, a furnace opening in the top of the heat preservation furnace can be opened, and when the furnace cover is slowly opened, the first spring and the second spring can be synchronously pulled; when the winch unwinds the steel wire rope, the sliding block in the sliding groove can be pulled to slowly move towards the opening direction of the furnace cover, so that the tensile coefficient of the first spring and the second spring is effectively reduced, and the service life of the first spring and the second spring is prolonged, on the contrary, when the winch unwinds the steel wire rope, the sliding block and the furnace cover can be synchronously pulled to automatically reset in cooperation with the tensile force of the first spring and the second spring; as the first spring and the second spring have small tensile coefficients, the furnace cover upper sealing plate can be ensured to be tightly attached to the top of the furnace mouth.

Description

Technical Field

[0001] The utility model relates to the technical field of opening and closing a heat preservation furnace cover, in particular to an automatic opening and closing device for a heat preservation furnace cover. Background Art

[0002] Currently, die-casting, a high-pressure casting process, requires extremely strict requirements and protection for the temperature of the molten aluminum and its materials. Consequently, high requirements are placed on the protection and temperature control of the holding furnace and the molten aluminum within the furnace. Furthermore, the furnace cover, which protects the molten aluminum at the furnace mouth, needs to be opened and closed frequently during the production process. Manual operation is very inconvenient and lacks safety assurance.

[0003] After searching, the authorization announcement number is CN221077246U, which discloses a frame body arranged on the furnace body, characterized in that the furnace body is provided with a furnace cover for sealing the furnace mouth, the frame body includes a vertical support frame and a rotating rod, the end of the support frame away from the rotating rod is located above the furnace cover, the rotating rod and the furnace body are connected with a rotating mechanism, the frame body is provided with a lifting mechanism for driving the furnace cover away from or close to the furnace mouth, the rotating rod is a hollow structure, the lifting mechanism includes a guide wheel group, a rope and a rope winder, the guide wheel group is provided in plurality, respectively located at the upper two ends of the support frame, the rope winder is located at the end of the rotating rod away from the support frame, one end of the rope is connected to the furnace cover, and the other end is sequentially wound around the guide wheel group and then passed through the rotating rod to be connected with the rope winder.

[0004] When the above patent uses the device to open and close the insulation furnace cover, it is necessary to hang the hanging ring on the anti-detachment hook. During this process, it is difficult to operate the rope, which makes it difficult to hang the ring on the anti-detachment hook. When the ring is hung on the anti-detachment hook, it is not easy to ensure the stability of the furnace cover, which will cause the furnace cover to shake. Therefore, it is necessary to design a new technical solution to solve this problem, which can stably rotate the furnace cover in one direction and make the furnace cover open and close at will. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic opening and closing device for a heat preservation furnace cover, which solves the problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an automatic opening and closing device for a heat preservation furnace cover, comprising a heat preservation furnace, a furnace opening being formed on the top of the heat preservation furnace, a furnace cover being installed on the top of the furnace opening, and an opening and closing mechanism being installed on the furnace cover and the furnace opening;

[0007] The opening and closing mechanism includes a sealing plate fixedly installed at the bottom of the furnace cover, sliding grooves obliquely opened on both sides of the inner wall of the furnace mouth, sliders slidably installed in the two groups of the sliding grooves, first springs fixedly installed at one end of the inner walls of the two groups of the sliding grooves, second springs fixedly installed on the side walls of the two groups of sliders, and a steel wire rope fixedly installed on one side of the top of the furnace cover. The sealing plate corresponds to the furnace mouth, the other sides of the two groups of the first springs are fixedly installed on the side walls of the two groups of sliders, and the two groups of the second springs are fixedly installed on both sides of the sealing plate.

[0008] As an optional solution of the technical solution of the present application, a magnetic ring is fixedly installed on the outer wall of the furnace cover, and the magnetic ring corresponds to the top of the insulation furnace.

[0009] As an optional solution of the technical solution of the present application, a winch is fixedly installed at the bottom of the side wall of the insulation furnace, and the winding roller of the winch is entangled with the other end of the wire rope to reel the wire rope.

[0010] As an optional solution to the technical solution of the present application, a bracket is fixedly installed on one side of the top of the insulation furnace, a first pulley is installed on the top of the bracket, and second pulleys are fixedly installed on both sides of the right port of the insulation furnace. Each group of the second pulleys and the first pulley are movably connected to the wire rope, which can support the wire rope.

[0011] As an optional solution to the technical solution of the present application, a mounting bracket is fixedly installed on one side of the top of the furnace mouth, a sleeve is rotatably installed in the middle of the mounting bracket, and the side wall of the sleeve is fixedly installed on one end of the furnace cover to limit the furnace cover.

[0012] As an optional solution of the technical solution of the present application, third springs are sleeved on both sides of the sleeve, and the two ends of the two groups of third springs are fixedly installed on the sleeve and the side walls of the mounting frame respectively, which can support the sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The technical solution of the present application drives the winch to reel in the steel wire rope in the opening and closing mechanism, and the continuously shrinking steel wire rope will pull the furnace cover to slowly open along the mounting frame as the center, so that the furnace mouth on the top of the insulation furnace can be opened. In conjunction with the slide groove, the slider, the first spring and the second spring, when the furnace cover is slowly opened, not only will the first spring and the second spring be pulled rope synchronously, but the slider in the slide groove will also be pulled to slowly move toward the opening direction of the furnace cover, which can effectively reduce the tension coefficient of the first spring and the second spring to increase the service life of the first spring and the second spring. On the contrary, while waiting for the winch to pay out the steel wire rope, the tension of the first spring and the second spring will synchronously pull the slider and the furnace cover to automatically reset. Since the tension coefficients of the first spring and the second spring are small, it can be ensured that the sealing plate on the furnace cover fits tightly to the top of the furnace mouth.

[0015] 2. The technical solution of the present application is to install a sleeve by rotating in the middle of the mounting frame, and the side wall of the sleeve is fixedly installed on one end of the furnace cover. When the operator drives the winch to reel in the wire rope, the wire rope will pull the furnace cover to one side. Since one end of the furnace cover is fixedly installed on the sleeve and is rotatably connected to the mounting frame, it is ensured that when the furnace cover is opened, it will rotate in the center direction of the sleeve, thereby effectively limiting and supporting the furnace cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of an automatic opening and closing device for a heat preservation furnace cover according to the present invention;

[0018] Figure 2 The utility model is a schematic diagram of the furnace cover structure of an automatic opening and closing device for a heat preservation furnace cover.

[0019] In the figure: 1. Holding furnace; 11. Furnace mouth; 12. Furnace cover; 13. Closing plate; 14. Mounting frame; 2. Slide groove; 21. Slider; 22. First spring; 23. Second spring; 24. Wire rope; 25. Winch; 3. Bracket; 31. First pulley; 32. Second pulley; 33. Magnetic ring; 34. Sleeve; 35. Third spring. DETAILED DESCRIPTION

[0020] See also Figure 1-2 The utility model provides a technical solution: an automatic opening and closing device for a heat preservation furnace cover, comprising a heat preservation furnace 1, a furnace opening 11 being opened on the top of the heat preservation furnace 1, a furnace cover 12 being installed on the top of the furnace opening 11, and an opening and closing mechanism being installed on the furnace cover 12 and the furnace opening 11;

[0021] The opening and closing mechanism includes a sealing plate 13 fixedly installed at the bottom of the furnace cover 12, slide grooves 2 obliquely opened on both sides of the inner wall of the furnace mouth 11, sliders 21 slidably installed in the two groups of slide grooves 2, first springs 22 fixedly installed at one end of the inner wall of the two groups of slide grooves 2, second springs 23 fixedly installed on the side walls of the two groups of sliders 21, and a steel wire rope 24 fixedly installed on one side of the top of the furnace cover 12. The sealing plate 13 corresponds to the furnace mouth 11, and the other sides of the two groups of first springs 22 are fixedly installed on the side walls of the two groups of sliders 21 respectively. The two groups of second springs 23 are fixedly installed on both sides of the sealing plate 13 respectively. A winch 25 is fixedly installed at the bottom of the side wall of the insulation furnace 1. The winding roller of the winch 25 is entangled with the other end of the steel wire rope 24, and the steel wire rope 24 can be wound.

[0022] When the cam 12 is opened, the first spring 22 and the second spring 23 are pulled together, and the sliding block 21 in the sliding block 2 is pulled together, so that the sliding block 21 in the sliding block 2 is moved slowly toward the opening direction of the cam 12. The stretch coefficients of the first spring 22 and the second spring 23 are small, so that the upper sealing plate 13 of the cam 12 can be tightly fitted to the top of the cam 11.

[0023] In some technical solutions, a mounting bracket 14 is fixedly installed on one side of the top of the furnace mouth 11, and a sleeve 34 is rotatably installed in the middle of the mounting bracket 14. The side wall of the sleeve 34 is fixedly installed on one end of the furnace cover 12, which can limit the furnace cover 12.

[0024] In this technical solution, when the operator drives the winch 25 to reel in the wire rope 24, the wire rope 24 will pull the furnace cover 12 to one side. Since one end of the furnace cover 12 is fixedly mounted on the sleeve 34 and is rotatably connected to the mounting frame 14, the furnace cover 12 is ensured to rotate in the center direction of the sleeve 34 when it is opened, thereby effectively limiting and supporting the furnace cover 12.

[0025] In some technical solutions, third springs 35 are sleeved on both sides of the sleeve 34 , and the two ends of the two groups of third springs 35 are fixed to the sleeve 34 and the side walls of the mounting frame 14 respectively, which can support the sleeve 34 .

[0026] In this technical solution, when the furnace cover 12 rotates around the sleeve 34, the third springs 35 installed on both sides of the sleeve 34 can support the furnace cover 12, so that the furnace cover 12 can automatically reset when it is not supported by the wire rope 24.

[0027] In some technical solutions, a bracket 3 is fixedly installed on one side of the top of the insulation furnace 1, a first pulley 31 is installed on the top of the bracket 3, and second pulleys 32 are fixedly installed on both sides of the right port of the insulation furnace 1. Each set of second pulleys 32 and the first pulley 31 are movably connected to the wire rope 24, which can support the wire rope 24.

[0028] In this technical solution, when the winch 25 is driven to reel in the wire rope 24, the wire rope 24 can be supported by cooperating with multiple sets of first pulleys 31 and second pulleys 32 to ensure that the wire rope 24 moves along the direction of the first pulley 31 and the second pulley 32.

[0029] In some technical solutions, a magnetic ring 33 is fixedly installed on the outer wall of the furnace cover 12, and the magnetic ring 33 corresponds to the top of the insulation furnace 1.

[0030] In this technical solution, when the furnace cover 12 is closed on the top of the furnace opening 11 , a magnetic ring 33 is fixedly installed on the bottom of the furnace cover 12 to further increase the firmness of the furnace cover 12 on the top of the furnace opening 11 .

[0031] When using an automatic opening and closing device for the cover of an insulation furnace, it should be noted that the utility model is an automatic opening and closing device for the cover of an insulation furnace, and each component is a universal standard part or a component known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0032] When in use, first, by docking the sealing plate 13 at the bottom of the furnace cover 12 with the furnace opening 11 at the top of the heat-insulating furnace 1, the furnace opening 11 at the top of the heat-insulating furnace 1 can be closed to ensure the sealing of the heat-insulating furnace 1 during the processing. At the same time, when driving the winch 25 and winding the wire rope 24 in the opening and closing mechanism, the continuously shrinking wire rope 24 will pull the furnace cover 12 to slowly open along the mounting frame 14 as the center, so that the furnace opening 11 at the top of the heat-insulating furnace 1 can be opened, and in conjunction with the slide 2, slider 21, first spring 22 and second spring 23, when the furnace cover 12 is slowly opened, not only will the first spring 22 and the second spring 23 be pulled synchronously, but the slider 21 in the slide 2 will also be pulled slowly toward the opening direction of the furnace cover 12, which can effectively reduce the tensile coefficients of the first spring 22 and the second spring 23, thereby increasing the tension of the first spring 22 and the second spring 23. The service life of the second spring 23 is short. On the contrary, when waiting for the winch 25 to pay out the wire rope 24, the pulling force of the first spring 22 and the second spring 23 will synchronously pull the slider 21 and the furnace cover 12 to automatically reset. Since the tensile coefficients of the first spring 22 and the second spring 23 are small, it can be ensured that the upper sealing plate 13 of the furnace cover 12 fits tightly against the top of the furnace mouth 11. At the same time, a sleeve 34 is installed by rotating in the middle of the mounting frame 14, and the side wall of the sleeve 34 is fixed to one end of the furnace cover 12. When the operator drives the winch 25 to reel in the wire rope 24, the wire rope 24 will pull the furnace cover 12 to one side. Since one end of the furnace cover 12 is fixed to the sleeve 34 and is rotatably connected to the mounting frame 14, it is ensured that when the furnace cover 12 is opened, it will rotate in the center direction of the sleeve 34, effectively limiting and supporting the furnace cover 12.

Claims

1. An automatic opening and closing device for a heat preservation furnace cover, comprising a heat preservation furnace (1), characterized in that: The insulation furnace (1) is provided with a furnace opening (11) on the top, a furnace cover (12) is installed on the top of the furnace opening (11), and an opening and closing mechanism is installed on the furnace cover (12) and the furnace opening (11); The opening and closing mechanism includes a sealing plate (13) fixedly mounted on the bottom of the furnace cover (12), chutes (2) obliquely opened on both sides of the inner wall of the furnace mouth (11), sliders (21) slidably mounted in the two groups of the chutes (2), first springs (22) fixedly mounted on one end of the inner wall of the two groups of the chutes (2), second springs (23) fixedly mounted on the side walls of the two groups of the sliders (21), and a steel wire rope (24) fixedly mounted on one side of the top of the furnace cover (12), the sealing plate (13) and the furnace mouth (11) correspond to each other, the other sides of the two groups of the first springs (22) are fixedly mounted on the side walls of the two groups of the sliders (21), and the two groups of the second springs (23) are fixedly mounted on both sides of the sealing plate (13).

2. The automatic opening and closing device for a heat preservation furnace cover according to claim 1, characterized in that: A magnetic ring (33) is fixedly mounted on the outer wall of the furnace cover (12), and the magnetic ring (33) corresponds to the top of the insulation furnace (1).

3. The automatic opening and closing device for a heat preservation furnace cover according to claim 1, characterized in that: A winch (25) is fixedly installed at the bottom of the side wall of the insulation furnace (1), and the winding roller of the winch (25) is entangled with the other end of the wire rope (24).

4. The automatic opening and closing device for a heat preservation furnace cover according to claim 1, characterized in that: A bracket (3) is fixedly installed on one side of the top of the insulation furnace (1), a first pulley (31) is installed on the top of the bracket (3), and second pulleys (32) are fixedly installed on both sides of the right port of the insulation furnace (1), and each set of the second pulleys (32) and the first pulley (31) are movably connected to the wire rope (24).

5. The automatic opening and closing device for a heat preservation furnace cover according to claim 1, characterized in that: A mounting frame (14) is fixedly mounted on one side of the top of the furnace opening (11), a sleeve (34) is rotatably mounted in the middle of the mounting frame (14), and a side wall of the sleeve (34) is fixedly mounted on one end of the furnace cover (12).

6. The automatic opening and closing device for a heat preservation furnace cover according to claim 5, characterized in that: The sleeve (34) is sleeved with a third spring (35) on both sides, and the two ends of the two groups of the third springs (35) are fixedly mounted on the sleeve (34) and the side wall of the mounting frame (14) respectively.

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