Auxiliary thermal insulation protection device for furnace door of heating furnace

Abstract

The utility model discloses a heating furnace door auxiliary thermal insulation protection device which comprises a heating furnace body, and an air cylinder is fixed to the front side face of the heating furnace body. The lower end of the air cylinder is fixed to the furnace door body, and a tooth block is welded and fixed to the front side face of the furnace door body. A protection mechanism is arranged on the front side face of the heating furnace body, and a protection plate can rotate through meshing transmission between a worm and a worm gear, so that the protection plate can block splashing oxide scales; the gear block and the gear are in meshed connection, a worm is fixed to the middle of the gear, and the other end of the worm is connected with a bearing of the heating furnace body. The auxiliary thermal insulation protection device for the furnace door of the heating furnace not only can block splashed oxide scales to prevent the oxide scales from hurting workers and improve the safety, but also can remind the workers in time to avoid danger caused by the fact that the workers are too close to a heating furnace body, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary thermal insulation protection devices, in particular to an auxiliary thermal insulation protection device for a heating furnace door. Background Art

[0002] The heating furnace is the main equipment of the steel rolling mill, which is mainly used for heating steel, thereby softening the steel, so as to better forge and shape the steel. For example, in the patent number "CN206488634U" and the patent name "A pneumatic furnace door protection device", a support is welded through the bottom of the shell, and the support is made of I-beam and has a length of 400mm. A steel column is welded on the right side of the shell, and a refractory castable is poured inside the shell. The refractory castable is a high-strength and lightweight castable with a length, width, and height of 800mm, 400mm, and 150mm respectively. It can block steel slag and high-temperature flue gas and protect the cylinder. When in use, circulating cooling water is passed through the serpentine water pipe, and the circulating cooling water flow rate is 1-1.5m / s. The circulating water enters the serpentine water pipe from the water inlet and flows to the water outlet through the serpentine pipeline route, thereby fully cooling the pipe wall and supporting and cooling the refractory castable. However, the above structure still has the following problems in actual use:

[0003] Although the above structure can support and cool down the refractory castable, more iron oxide scale will be produced when the steel billet is just heated out of the furnace. When it is transported out of the furnace by the conveyor rollers, the iron oxide scale is easy to splash to both sides, which can easily cause harm to workers and has low safety.

[0004] Therefore, we proposed that the auxiliary thermal insulation protection device of the heating furnace door can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary thermal insulation protection device for a heating furnace door, so as to solve the problem raised by the above-mentioned background technology that a large amount of iron oxide scale is generated when the steel billet is just heated out of the furnace in the current market, and when it is transported out of the furnace by conveyor rollers, the iron oxide scale is easy to splash to both sides, which can easily cause harm to workers and has low safety.

[0006] To achieve the above object, the utility model provides the following technical solutions: an auxiliary thermal insulation protection device for a heating furnace door, comprising a heating furnace body, wherein a cylinder is fixed to the front side of the heating furnace body;

[0007] The method comprises: the lower end of the cylinder is fixed to the furnace door body, and a gear block is welded and fixed to the front side of the furnace door body;

[0008] The front side of the heating furnace body is provided with a protection mechanism, and the protection plate can be rotated through the meshing transmission between the worm and the worm wheel, so that the protection plate can block the splashing iron oxide scale.

[0009] Preferably, the tooth block is meshed with the gear, a worm is fixed in the middle of the gear, and the other end of the worm is connected to the bearing of the heating furnace body.

[0010] Preferably, a worm wheel is meshed on the outer side of the worm, a rotating shaft is fixed in the middle of the worm wheel, a bearing connection is formed between the rotating shaft and the furnace door body, and a protective plate is fixedly connected to the outer side of the rotating shaft.

[0011] Preferably, the maximum rotation angle of the protection plate is 90 degrees.

[0012] Preferably, a sleeve is welded and fixed on the front side of the heating furnace body, and a sleeve rod is slidably engaged inside the sleeve, a laser sensing element is fixed on the outer side of the sleeve rod, and a buzzer alarm is fixedly installed on the front end of the sleeve rod.

[0013] Preferably, a row of clamping holes are formed at equal intervals on the upper surface of the sleeve rod, and a clamping structure is formed between the clamping holes and the latch pin, and the latch pin passes through the sleeve and forms a clamping connection with the sleeve rod.

[0014] Preferably, the shortest distance between the laser sensing element and the heating furnace body is greater than the highest point of the front end of the protection plate, so that the protection plate will not block the formation of a sensing area between the laser sensing elements.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the auxiliary thermal insulation protection device for the heating furnace door can not only block the splashing iron oxide scale to prevent it from hurting the workers and improve safety, but also can timely remind the workers to avoid the danger caused by the workers being too close to the heating furnace body and improve safety. The specific contents are as follows:

[0016] The worm drives the worm wheel to rotate, and then the worm wheel drives the rotating shaft to rotate, so that the rotating shaft rotates and drives the protective plate to rotate, so that the protective plate is perpendicular to the heating furnace body, thereby blocking the flying iron oxide scale to prevent it from hurting the workers and improve safety;

[0017] The cylinder drives the furnace door body to rise and fall, and the gears are meshed with each other, so that the gears can drive the worm to rotate, thereby eliminating the need to provide other power sources and reducing production costs.

[0018] When the worm drives the worm wheel to reverse, the worm wheel will drive the protection plate to reset through the rotating shaft, so that the protection plate can be stored to avoid the protection plate affecting the workers' sight during heating, making it easier for workers to observe the heating situation.

[0019] Through the sensing area formed between the two groups of laser sensing elements, when a worker passes through the laser sensing elements and reaches the front side of the heating furnace body, an alarm is sounded through the buzzer alarm, thereby timely reminding the worker to avoid danger caused by the worker being too close to the heating furnace body, thereby improving safety;

[0020] Furthermore, by pulling the sleeve rod, the sleeve rod slides out of the sleeve, and then a pin is passed through the sleeve and the card hole to form a card structure, thereby limiting the position of the sleeve rod, and then the distance between the laser sensing element and the heating furnace body can be adjusted according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 3 This is a side view of the structure of the connection between the worm wheel and the rotating shaft of the utility model;

[0024] Figure 4 This is a schematic diagram of the top view of the connection between the worm wheel and the rotating shaft of the utility model;

[0025] Figure 5 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0026] Figure 6 It is a schematic diagram of the side view structure of the connection between the sleeve and the sleeve rod of the utility model.

[0027] In the figure: 1. Heating furnace body; 2. Cylinder; 3. Furnace door body; 4. Gear block; 5. Gear; 6. Worm; 7. Worm wheel; 8. Rotating shaft; 9. Protective plate; 10. Sleeve; 11. Sleeve rod; 12. Laser sensing element; 13. Card hole; 14. Latch; 15. Buzzer alarm. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 6 ;

[0030] Embodiment 1: In order to solve the problem that when the steel billet is just heated and taken out of the furnace, a lot of iron oxide scale is generated in the prior art, and when it is transported out of the furnace by the conveyor roller, the iron oxide scale is easy to splash to both sides, which is easy to cause harm to the workers and has low safety, the specific reference is Figure 1-Figure 4 , the utility model provides a technical solution: comprising a heating furnace body 1, a cylinder 2 is fixed to the front side of the heating furnace body 1;

[0031] It also includes: the lower end of the cylinder 2 is fixed to the furnace door body 3, and a tooth block 4 is welded and fixed to the front side of the furnace door body 3; a protection mechanism is provided on the front side of the heating furnace body 1, and the protection plate 9 can be rotated through the meshing transmission between the worm 6 and the worm wheel 7, so that the protection plate 9 can block the splashing iron oxide scale; the tooth block 4 is meshed with the gear 5, and the worm 6 is fixed in the middle of the gear 5, and the other end of the worm 6 is connected to the heating furnace body 1 with a bearing, the outer side of the worm 6 is meshed with the worm wheel 7, and the middle of the worm wheel 7 is fixed with a rotating shaft 8, and the rotating shaft 8 is connected to the furnace door body 3 with a bearing, and the outer side of the rotating shaft 8 is fixedly connected with a protective plate 9, and the maximum rotation angle of the protective plate 9 is 90 degrees;

[0032] By starting the cylinder 2, the cylinder 2 drives the furnace door body 3 upward, and the furnace door body 3 is upward, so that the tooth block 4 is upward and meshed with the gear 5, so that the gear 5 rotates, and the fixed worm 6 is driven to rotate together through the rotation of the gear 5, and the worm 6 is driven to rotate through the rotation of the worm wheel 7, and the fixed connection between the worm wheel 7 and the rotating shaft 8 is made to rotate together, so that the rotating shaft 8 drives the fixed protection plate 9 to rotate together, and the protection plate 9 is rotated to be vertical to the heating furnace body 1, so as to achieve a protective effect, so that the splashing iron oxide scale can be blocked, so as to avoid it from causing harm to the workers, and the practical effect is good. When the cylinder 2 drives the furnace door body 3 to close, the gear 5 is reversed again through the tooth block 4, and the gear 5 is reversed, so that the worm 6 is reversed together, so that it drives the worm wheel 7 to reverse, so that the protection plate 9 is reset through the rotating shaft 8, so that the protection plate 9 can be stored, so as to avoid the protection plate 9 affecting the workers' sight during heating, so as to facilitate the workers to observe the heating situation;

[0033] Embodiment 2: Different from Embodiment 1, this embodiment can monitor the distance between the worker and the heating furnace body 1, thereby preventing the worker from being too close to the heating furnace body 1 and causing danger. For details, refer to Figure 1 and Figure 5-Figure 6A sleeve 10 is welded and fixed on the front side of the heating furnace body 1, and a sleeve rod 11 is slidably engaged inside the sleeve 10, and a laser sensing element 12 is fixed on the outer side of the sleeve rod 11, and a buzzer alarm 15 is fixedly installed on the front end of the sleeve rod 11. The closest distance between the laser sensing element 12 and the heating furnace body 1 is greater than the highest point of the front end of the protection plate 9, so that the protection plate 9 will not block the formation of a sensing area between the laser sensing elements 12;

[0034] Furthermore, by setting the laser sensing element 12 on the front side of the sleeve rod 11, and the laser sensing element 12 is provided with two groups, the two groups of laser sensing elements 12 can receive laser signals from each other, thereby forming a sensing area. When a worker reaches the front side of the heating furnace body 1 through the laser sensing element 12, the laser sensing element 12 transmits the signal to the buzzer alarm 15 after sensing, and the buzzer alarm 15 sends out an alarm, thereby timely reminding the worker to avoid danger caused by the worker being too close to the heating furnace body 1, thereby improving safety.

[0035] Embodiment 3: Different from Embodiment 1, this embodiment can also adjust the distance between the laser sensing element 12 and the heating furnace body 1. For details, refer to Figure 5-Figure 6 A row of card holes 13 are evenly spaced on the upper surface of the sleeve rod 11, and a card hole 13 and a latch 14 form a card-engaging structure, and the latch 14 penetrates the sleeve 10 and forms a card-engaging connection with the sleeve rod 11;

[0036] Moreover, a sliding engagement connection is formed between the sleeve 10 and the sleeve rod 11, and the latch 14 is pulled to separate the latch 14 from the engaging hole 13, and then the sleeve rod 11 can be pulled out of the sleeve 10. When it is pulled to a specified position, the latch 14 is passed through the sleeve 10, so that the bottom of the latch 14 is engaged with the engaging hole 13 again, thereby limiting the position of the sleeve rod 11, and then the distance between the laser sensing element 12 and the heating furnace body 1 can be adjusted according to actual conditions, which has good functionality and high practicality.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary thermal insulation protection device for a heating furnace door, comprising a heating furnace body (1), wherein a cylinder (2) is fixed to the front side of the heating furnace body (1); It is characterized in that Also includes: The lower end of the cylinder (2) is fixed to the furnace door body (3), and a tooth block (4) is welded and fixed to the front side of the furnace door body (3); The front side of the heating furnace body (1) is provided with a protection mechanism, and the protection plate (9) can rotate through meshing transmission between the worm (6) and the worm wheel (7), so that the protection plate (9) can block the splashing iron oxide scale.

2. The auxiliary thermal insulation protection device for a heating furnace door according to claim 1, characterized in that: The tooth block (4) and the gear (5) are meshedly connected, a worm (6) is fixed in the middle of the gear (5), and the other end of the worm (6) is connected to a bearing of the heating furnace body (1).

3. The auxiliary thermal insulation protection device for a heating furnace door according to claim 2, characterized in that: The outer side surface of the worm (6) is meshed with a worm wheel (7), and a rotating shaft (8) is fixed in the middle of the worm wheel (7). A bearing connection is formed between the rotating shaft (8) and the furnace door body (3), and a protective plate (9) is fixedly connected to the outer side of the rotating shaft (8).

4. The auxiliary thermal insulation protection device for a heating furnace door according to claim 3, characterized in that: The maximum rotation angle of the protection plate (9) is 90 degrees.

5. The auxiliary thermal insulation protection device for a heating furnace door according to claim 1, characterized in that: A sleeve (10) is welded and fixed to the front side of the heating furnace body (1), a sleeve rod (11) is slidably engaged inside the sleeve (10), a laser sensing element (12) is fixed to the outer side of the sleeve rod (11), and a buzzer alarm (15) is fixedly mounted at the front end of the sleeve rod (11).

6. The auxiliary thermal insulation protection device for a heating furnace door according to claim 5, characterized in that: A row of clamping holes (13) are formed at equal intervals on the upper surface of the sleeve rod (11), and a clamping structure is formed between the clamping holes (13) and the latch pin (14), and the latch pin (14) penetrates the sleeve (10) and forms a clamping connection with the sleeve rod (11).

7. The auxiliary thermal insulation protection device for a heating furnace door according to claim 5, characterized in that: The shortest distance between the laser sensing element (12) and the heating furnace body (1) is greater than the highest point of the front end of the protection plate (9), so that the protection plate (9) will not block the formation of a sensing area between the laser sensing elements (12).

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