Back sealing structure of car-type heating furnace

Abstract

The utility model discloses a furnace rear sealing structure of a trolley type heating furnace. The furnace rear sealing structure comprises a double-sealing mechanism fixedly arranged on a furnace rear wall and a step-shaped trolley rear frame arranged on a trolley, and the double-sealing mechanism and the trolley rear frame are used in cooperation to achieve sealing. The double-sealing mechanism comprises two sets of single-sealing mechanisms which are arranged in an upper layer and a lower layer, each set of single-sealing mechanism comprises a sealing support, installation holes are formed in the two side walls of the sealing support, screws are horizontally installed in the installation holes, sealing grooves with single-side openings are formed in the front ends of the screws, and sealing blocks are installed in the sealing grooves. The sealing structure combining the double-sealing structure and the step-shaped structure of the rear frame of the trolley is adopted, so that the problem that the trolley impacts a rear wall when walking in place, and sealing is not tight due to the fact that the trolley shifts due to the counter-acting force of the rear wall is solved; and the problem that the furnace wall and the trolley cannot be completely and tightly sealed in the length direction after the trolley is in place is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial heating furnaces, in particular to a furnace rear sealing structure of a trolley type heating furnace. Background Art

[0002] The characteristic of the trolley-type heating furnace is that the trolley needs to constantly enter and exit the furnace, and there must be a gap between the furnace wall and the trolley. In order to prevent the high-temperature gas in the furnace from escaping, the gap between the furnace wall and the trolley needs to be sealed. In particular, it is difficult to seal between the rear wall of the furnace and the trolley. The existing single sealing structure between the rear wall of the furnace and the trolley is mostly used. Although the cost is low, the single sealing structure cannot ensure that the furnace wall and the trolley are completely sealed in the length direction. The single seal is easy to deform, the maintenance is frequent, and the failure rate is high. Especially in the use of high-temperature trolley-type heating furnaces, once the high-temperature gas in the furnace escapes, it directly causes the deformation of the steel structure of the rear wall of the furnace, and the places where the high-temperature gas is washed will be damaged, posing a safety hazard. Therefore, the existing technology not only has the problem that the trolley hits the rear wall when it moves into place, and the reaction force of the rear wall causes the sealing to be poor, but also has the defect that it cannot ensure that the furnace wall and the trolley are completely sealed in the length direction after the trolley is in place.

[0003] In order to solve the above problems existing in the prior art, we propose a rear sealing structure of a trolley-type heating furnace. Utility Model Content

[0004] The utility model aims to provide a rear sealing structure of a trolley type heating furnace with buffering function and double sealing effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rear sealing structure of a trolley-type heating furnace includes a double sealing mechanism fixedly arranged on the rear wall of the furnace, and a stepped rear frame of the trolley arranged on the trolley, the double sealing mechanism and the rear frame of the trolley are used in conjunction with each other to achieve sealing; the double sealing mechanism includes two sets of single sealing mechanisms arranged in upper and lower layers, each set of single sealing mechanisms includes a sealing bracket, mounting holes are provided on the two side walls of the sealing bracket, a screw is horizontally installed in the mounting hole, a sealing groove with a single-side opening is provided at the front end of the screw, and a sealing block is installed in the sealing groove; the outer walls of the sealing groove located on the upper layer and the sealing groove located on the lower layer are fitted together, the sealing groove located on the lower layer is offset toward the rear wall of the furnace relative to the sealing groove located on the upper layer, and the end faces of the two form a step shape that fits the rear frame of the trolley.

[0006] Preferably, a spring is sleeved on the screw rod, the spring is located between the two side walls of the bracket, and an adjusting nut is arranged at the rear end of the screw rod.

[0007] Preferably, a mounting hole is opened on the sealing groove, and the front end of the screw rod passes through the mounting hole and is connected to the sealing groove through a nut.

[0008] Preferably, the sealing block is made of flexible material.

[0009] Preferably, the sealing block is a refractory fiber prefabricated block.

[0010] Preferably, the length of the sealing block is greater than the length of the sealing groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model adopts a double sealing structure installed on the rear wall of the furnace, and the rear frame of the trolley is designed as a step-type structure. The double sealing structure is combined with the step-type structure of the rear frame 7 of the trolley to play a double sealing role. The double sealing protection more effectively prevents the high-temperature gas in the furnace from escaping from the rear wall of the furnace, which not only saves energy, but also prevents the high-temperature gas from escaping and damaging the equipment;

[0013] (2) The setting of the screw device with adjustable spring elastic force and the flexible sealing block not only squeezes the rear frame of the trolley to improve the sealing effect, but also plays a certain buffering role, overcoming the defect that the trolley hits the rear wall when it moves into place, and the reaction force of the rear wall causes the trolley to shift and lead to poor sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] In the figure: 1. Sealing bracket; 2. Screw rod; 3. Adjusting nut; 4. Spring; 5. Sealing groove; 6. Sealing block; 7. Rear frame of trolley. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1 The utility model comprises a double sealing mechanism fixedly arranged on the rear wall of the furnace, and a stepped trolley rear frame 7 arranged on the trolley, and the double sealing mechanism cooperates with the trolley rear frame 7 to achieve sealing.

[0018] The double sealing mechanism includes two sets of single sealing mechanisms arranged in an upper and lower layer, each set of single sealing mechanism includes a sealing bracket 1, and mounting holes are opened on the two side walls of the sealing bracket 1, and a screw 2 is horizontally installed in the mounting hole. A sealing groove 5 with a single-side opening is set at the front end of the screw 2, and a sealing block 6 is installed in the sealing groove 5; a spring 4 is sleeved on the screw 2, and the spring 4 is located between the two side walls of the bracket 1, and an adjusting nut 3 is set at the rear end of the screw 2.

[0019] The outer walls of the upper sealing groove 5 and the lower sealing groove 5 are fitted together, and the lower sealing groove 5 is offset toward the furnace rear wall relative to the upper sealing groove 5 , and the end faces of the two form a step shape that fits with the rear frame 7 of the trolley.

[0020] Specifically, a mounting hole is opened on the sealing groove 5, and the front end of the screw rod 2 passes through the mounting hole and is connected to the sealing groove 5 through a nut.

[0021] The sealing block 6 is made of flexible material. In this embodiment, the sealing block 6 is made of refractory fiber prefabricated block. The flexible material can play a certain buffering role. When it collides and squeezes with the rear frame 7 of the trolley, it can produce a better sealing effect, and can prevent the trolley from hitting the rear wall of the furnace when it moves into place. The reaction force of the rear wall of the furnace causes the trolley to shift, resulting in poor sealing.

[0022] The length of the sealing block 6 is greater than the length of the sealing groove 5, that is, the end surface of the sealing block 6 can slightly exceed the outer end surface of the sealing groove 5, thereby reducing the impact force of the rear frame 7 of the trolley directly colliding with the sealing groove.

[0023] The screw rod 2 is not only used to support and fix the sealing groove 5, but also combined with the adjusting nut 3 and the spring 4 to form a set of devices with adjustable spring elastic force. The sealing groove 5 is squeezed by relying on the elastic force of the spring 4. A refractory fiber prefabricated block is installed in the sealing groove 5. By squeezing the sealing groove 5, the refractory fiber prefabricated block in the sealing groove 5 is tightly attached to the trolley-shaped rear frame.

[0024] The utility model adopts a double sealing structure installed on the rear wall of the furnace. The rear frame of the trolley is designed as a step-type structure. The double sealing structure is combined with the step-type structure of the rear frame 7 of the trolley to play a double sealing role. The double sealing protection can more effectively prevent the high-temperature gas in the furnace from escaping from the rear wall of the furnace, which not only saves energy but also prevents the high-temperature gas from escaping and damaging the equipment.

[0025] 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. A rear sealing structure of a trolley type heating furnace, characterized in that: It comprises a double sealing mechanism fixedly arranged on the rear wall of the furnace, and a stepped trolley rear frame (7) arranged on the trolley, wherein the double sealing mechanism cooperates with the trolley rear frame (7) to achieve sealing; The double sealing mechanism comprises two sets of single sealing mechanisms arranged in upper and lower layers, each set of single sealing mechanisms comprises a sealing bracket (1), mounting holes are provided on both side walls of the sealing bracket (1), a screw (2) is horizontally installed in the mounting hole, a sealing groove (5) with a single-side opening is provided at the front end of the screw (2), and a sealing block (6) is installed in the sealing groove (5); The outer walls of the sealing groove (5) located at the upper layer and the sealing groove (5) located at the lower layer are fitted together, and the sealing groove (5) located at the lower layer is offset toward the furnace rear wall relative to the sealing groove (5) located at the upper layer, and the end faces of the two form a step shape that fits with the rear frame (7) of the trolley.

2. The rear sealing structure of a trolley type heating furnace according to claim 1 is characterized in that: A spring (4) is sleeved on the screw rod (2), and the spring (4) is located between the two side walls of the bracket (1). An adjusting nut (3) is arranged at the rear end of the screw rod (2).

3. The rear sealing structure of a trolley type heating furnace according to claim 1 is characterized in that: A mounting hole is provided on the sealing groove (5), and the front end of the screw rod (2) passes through the mounting hole and is connected to the sealing groove (5) via a nut.

4. The rear sealing structure of a trolley type heating furnace according to claim 1, characterized in that: The sealing block (6) is made of a flexible material.

5. The rear sealing structure of a trolley type heating furnace according to claim 4 is characterized in that: The sealing block (6) is a refractory fiber prefabricated block.

6. The rear sealing structure of a trolley type heating furnace according to claim 4, characterized in that: The length of the sealing block (6) is greater than the length of the sealing groove (5).

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