Adjustable spring pressing device for trolley door

Abstract

The utility model discloses a trolley furnace door adjustable spring pressing device which comprises a furnace mouth guard plate, a sealing groove, a fixing frame and a lead screw installed on the fixing frame in a penetrating mode, the furnace mouth guard plate, the sealing groove and the fixing frame are sequentially arranged at intervals, the fixing frame comprises a front fixing plate and a rear fixing plate which are arranged at intervals, and one end of the lead screw penetrates out of the front fixing plate to be fixedly connected with the sealing groove. The other end penetrates out of the rear fixing plate and is provided with a rear adjusting nut; a strong spring penetrates through the lead screw located between the front fixing plate and the rear fixing plate, a front adjusting nut used for pressing the strong spring is arranged on the lead screw on the left side of the strong spring, and the right side of the strong spring abuts against the inner wall of the rear fixing plate. A fireproof layer is arranged in the sealing groove; through the design, the technical problem that the furnace door and the furnace mouth are not tightly sealed due to manufacturing and mounting errors of the furnace door is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace trolleys, in particular to an adjustable spring pressing device for a trolley furnace door. Background Art

[0002] The sealing method between the furnace door and the furnace mouth of the furnace door installed on the trolley today is generally that the size of the furnace door is larger than the size of the furnace mouth, and the furnace door is sealed by fitting the furnace mouth guard plate with the part of the furnace door that exceeds the furnace mouth. This method results in partial loose fitting of the furnace frame, and gaps between the furnace door and the furnace mouth guard plate. Especially for wide and large furnace doors, such as furnace doors with a width of more than 5 meters and a height of more than 4 meters, verticality and straightness errors occur during manufacturing and installation. It is inevitable that the furnace door and the furnace mouth guard plate will not fit tightly, and there is no way to adjust the seal. In order to eliminate the error, most of the refractory materials filled in the furnace door are used for leveling. After long-term use, the refractory materials filled are often collided and rubbed by the furnace mouth guard plate, resulting in partial loose fitting of the furnace mouth, and the hot air in the furnace escapes, causing the steel structure of the furnace door to deform. Repairing the loose seal requires large-scale removal of refractory materials, which not only wastes materials but also increases the amount of maintenance.

[0003] Therefore, it is necessary to provide an adjustable spring clamping device for a trolley furnace door to solve the above problems. Utility Model Content

[0004] The utility model aims to overcome the defects in the prior art and provide a trolley furnace door adjustable spring pressing device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A trolley furnace door adjustable spring clamping device comprises: a furnace mouth guard plate, a sealing groove, a fixing frame and a lead screw installed on the fixing frame, which are arranged in sequence at intervals, the fixing frame comprises a front fixing plate and a rear fixing plate which are arranged at intervals, one end of the lead screw passes through the front fixing plate and is fixedly connected to the sealing groove, and the other end passes through the rear fixing plate and is provided with a rear adjusting nut; a strong spring is installed on the lead screw located between the front fixing plate and the rear fixing plate, a front adjusting nut for pressing the strong spring is provided on the lead screw on the left side of the strong spring, and the right side of the strong spring is close to the inner wall of the rear fixing plate;

[0007] A fire-resistant layer is arranged in the sealing groove.

[0008] Preferably, a first gasket is provided between the strong spring and the front adjusting nut.

[0009] Preferably, the refractory layer material is one of aluminum oxide, lanthanum oxide, beryllium oxide, calcium oxide or zirconium oxide.

[0010] Preferably, one end of the lead screw is connected to the sealing groove via two fixing nuts.

[0011] Preferably, the furnace mouth guard plate is made of heat-resistant cast iron or heat-resistant steel.

[0012] Preferably, a second gasket is provided between the two fixing nuts and the sealing groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model can be arranged outside the furnace mouth in sections. Even if a gap appears locally in the furnace door, the furnace mouth can be tightened by adjusting the tension of the strong spring on the single set of spring clamping device. The device is easy to operate and replace, and solves the problem of poor sealing between the furnace door and the furnace mouth caused by errors in manufacturing and installation of the furnace door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] In the figure: 1. furnace mouth guard plate; 2. sealing groove; 21. refractory layer; 3. fixing frame; 31. front fixing plate; 32. rear fixing plate; 33. rear adjusting nut; 4. lead screw; 5. strong spring; 51. front adjusting nut; 52. first gasket; 6. two fixing nuts; 61. second gasket. DETAILED DESCRIPTION

[0017] A preferred embodiment of the present invention will be described below in conjunction with the accompanying drawings to clearly and completely describe the technical solution in a preferred embodiment of the present invention.

[0018] A trolley furnace door adjustable spring clamping device comprises: a furnace mouth guard plate 1, a sealing groove 2, a fixing frame 3 and a lead screw 4 installed on the fixing frame 3, which are arranged in sequence at intervals. The fixing frame 3 comprises a front fixing plate 31 and a rear fixing plate 32 which are arranged at intervals. One end of the lead screw 4 passes through the front fixing plate 31 and is fixedly connected to the sealing groove 2, and the other end passes through the rear fixing plate 32 and is provided with a rear adjusting nut 33; a strong spring 5 is installed on the lead screw 4 located between the front fixing plate 31 and the rear fixing plate 32, and a front adjusting nut 51 for pressing the strong spring 5 is provided on the lead screw 4 on the left side of the strong spring 5, and the right side of the strong spring 5 is close to the inner wall of the rear fixing plate 32; a refractory layer 21 is provided in the sealing groove 2.

[0019] The utility model adopts the above design, and by changing the position of the front adjustment nut 51 on the screw 4, the tension of the strong spring 5 is adjusted. The front adjustment nut 51 presses the strong spring 5, and the elastic force of the strong spring 5 pushes the front adjustment nut 51, thereby driving the screw 4 forward. After the rear adjustment nut 33 is loosened, the screw 4 pushes the sealing groove 2 forward, and the refractory layer 21 in the sealing groove 2 is constantly pressed against the furnace door guard plate 1 by the elastic force of the strong spring 5, so as to play a sealing role. In addition, the utility model can be installed in sections. When a gap appears locally between the furnace door and the furnace mouth, the corresponding spring pressing device at the gap can be adjusted separately to achieve the local pressing function.

[0020] Specifically, a first gasket 52 is provided between the strong spring 5 and the front adjusting nut 51 .

[0021] The utility model prevents the front adjusting nut 51 from loosening due to vibration, movement and the like through the above-mentioned design.

[0022] Specifically, the material of the refractory layer 21 is one of aluminum oxide, lanthanum oxide, beryllium oxide, calcium oxide or zirconium oxide.

[0023] Specifically, one end of the lead screw 4 is connected to the sealing groove 2 via two fixing nuts 6 .

[0024] Through the above design, the two fixing nuts 6 of the utility model are respectively arranged at the inner and outer sides of the sealing groove 2, so that the screw 4 is fixed more firmly.

[0025] Specifically, the furnace mouth guard plate 1 is made of heat-resistant cast iron or heat-resistant steel.

[0026] Specifically, a second gasket 61 is provided between the two fixing nuts 6 and the sealing groove 2 .

[0027] The utility model prevents the fixing nut 6 from loosening due to vibration, activity and the like through the above-mentioned design.

[0028] Through the above design, the utility model enhances the waterproofness of the device and is more suitable for outdoor application scenarios.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable spring clamping device for a trolley furnace door, characterized in that: include: A furnace mouth guard plate (1), a sealing groove (2), a fixing frame (3) and a lead screw (4) mounted on the fixing frame (3) are arranged in sequence at intervals, the fixing frame (3) comprises a front fixing plate (31) and a rear fixing plate (32) arranged at intervals, one end of the lead screw (4) passes through the front fixing plate (31) and is fixedly connected to the sealing groove (2), and the other end passes through the rear fixing plate (32) and is provided with a rear adjustment nut (33); A strong spring (5) is installed on the lead screw (4) between the front fixing plate (31) and the rear fixing plate (32); a front adjusting nut (51) for pressing the strong spring (5) is provided on the lead screw (4) on the left side of the strong spring (5); and the right side of the strong spring (5) is close to the inner wall of the rear fixing plate (32); A fire-resistant layer (21) is provided in the sealing groove (2).

2. The adjustable spring clamping device for a trolley furnace door according to claim 1 is characterized in that: A first gasket (52) is provided between the strong spring (5) and the front adjusting nut (51).

3. The adjustable spring clamping device for a trolley furnace door according to claim 1 is characterized in that: The material of the refractory layer (21) is one of aluminum oxide, lanthanum oxide, beryllium oxide, calcium oxide or zirconium oxide.

4. The adjustable spring clamping device for a trolley furnace door according to claim 1 is characterized in that: One end of the lead screw (4) is connected to the sealing groove (2) via two fixing nuts (6).

5. The adjustable spring clamping device for a trolley furnace door according to claim 1 is characterized in that: The furnace mouth guard plate (1) is made of heat-resistant cast iron or heat-resistant steel.

6. The adjustable spring pressing device for a trolley furnace door according to claim 4 is characterized in that: A second gasket (61) is provided between the two fixing nuts (6) and the sealing groove (2).

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