Combined insulation structure for scrap steel heating and transportation

Abstract

The present invention discloses a combined heat-insulating structure for heating and conveying scrap steel, comprising a plurality of heat-insulating structures, each of which is installed in a vibrating conveying trough, and buffer seals are provided between adjacent heat-insulating structures and between the heat-insulating structures and the inner wall of the vibrating conveying trough; each of the heat-insulating structures comprises a heat-insulating block and a positioning locking member; the heat-insulating block is provided with a positioning locking hole, and the positioning locking member passes through the positioning locking hole to install the heat-insulating block in the vibrating conveying trough. The heat-insulating structure constitutes a heat-insulating heating cavity, which can evenly heat the scrap steel on the upper part of the heat-insulating structure, reduce the temperature gradient between the upper and lower layers of the scrap steel, and also reduce the temperature contacted by the vibrating conveying trough, thereby extending the service life. Because each heat-insulating structure vibrates with the vibrating conveying trough, in order to avoid collisions between each other and deformation of the steel plate of the vibrating conveying trough due to heat, a buffer seal is filled to solve the problem.

Description

Technical Field

[0001] The invention belongs to the technical field of scrap steel heating, and in particular relates to a combined heat insulation structure for scrap steel heating and transportation. Background Art

[0002] In the DP scrap steel complete set conveying equipment, a vibrating conveyor trough is used to convey the scrap steel to the furnace, and water cooling or air cooling is used to cool the vibrating conveyor trough close to the furnace. However, due to the inherent limitation of cooling, the temperature of the bottom wall and the side wall of the vibrating conveyor trough is always below 100°C, and the temperature of the scrap steel material close to the bottom wall and the side wall of the conveyor trough is also low. The temperature distribution of the scrap steel in the conveyor trough is uneven, and the temperature gradient is large, resulting in energy waste. Summary of the invention

[0003] In view of the deficiencies described in the above-mentioned prior art, the present invention provides a combined insulation structure for scrap steel heating and transportation, which eliminates water cooling or air cooling and is directly installed floatingly on a vibrating conveying trough, thereby overcoming the difficulties of large temperature difference of scrap steel and high energy consumption caused by the limitations of water cooling or air cooling.

[0004] The technical solution adopted by the present invention is:

[0005] A combined heat-insulating structure for heating and conveying scrap steel comprises a plurality of heat-insulating structures, each of which is installed in a vibrating conveying trough, and buffer seals are provided between adjacent heat-insulating structures and between the heat-insulating structures and the inner wall of the vibrating conveying trough; each of the heat-insulating structures comprises a heat-insulating block and a positioning locking member; the heat-insulating block is provided with a positioning locking hole, and the positioning locking member passes through the positioning locking hole to install the heat-insulating block in the vibrating conveying trough. The heat-insulating structure constitutes a heat-insulating heating chamber, which can evenly heat the scrap steel on the upper part of the heat-insulating structure, reduce the temperature gradient between the upper and lower layers of the scrap steel, and also reduce the temperature contacted by the vibrating conveying trough, thereby extending the service life. Because each heat-insulating structure vibrates with the vibrating conveying trough, in order to avoid collisions between each other and deformation of the steel plate of the vibrating conveying trough due to heat, a buffer seal is filled to solve the problem.

[0006] As a preferred solution of the present invention, a plurality of positioning trays arranged in a vertical and horizontal interval are arranged in the vibration conveying trough, the positioning trays are welded in the vibration conveying trough, and the positioning trays correspond to the insulation structure one by one, and the insulation block is installed in the positioning trays; a sealed filling cavity is reserved between the positioning trays in adjacent rows, between the positioning trays in adjacent columns, and between the positioning trays and the inner wall of the vibration conveying trough, and the buffer seal is located in the sealed filling cavity. The periphery of the positioning tray is upturned, which can play a certain role in limiting the insulation block and also play a role in guiding installation.

[0007] As a preferred solution of the present invention, a buffer seal is filled between the thermal insulation block and the positioning tray to further protect the thermal insulation block.

[0008] As a preferred solution of the present invention, the buffer seal is a fiber seal that shrinks when heated and expands when cooled. The fiber seal has the properties of shrinking when heated and expanding when cooled, provides space for the heat insulation block and the steel plate of the vibrating conveyor trough to deform when heated, and also plays a shock absorbing and buffering function.

[0009] As a preferred solution of the present invention, the heat insulation block is provided with an auxiliary mounting hole, the auxiliary mounting hole is located above the locking positioning hole and communicates with the locking positioning hole, and the inner diameter of the auxiliary mounting hole is larger than the inner diameter of the locking positioning hole. The auxiliary mounting hole is provided to conceal the locking positioning piece for installation.

[0010] As a preferred solution of the present invention, the locking positioning member includes a locking bolt, a locking nut and an elastic washer. The locking bolt is connected to the locking nut after being exposed from the vibration conveying trough, and an elastic washer is sleeved on the locking bolt, and the elastic washer is located between the locking nut and the vibration conveying trough. The elastic washer can be used in a scrap steel heating environment and can reduce the vibration of the locking bolt to prevent it from being separated from the locking nut during vibration.

[0011] As a preferred solution of the present invention, the insulation block is made of refractory material, and the refractory material itself has the performance to withstand the temperature of the scrap steel heating stage.

[0012] The present invention directly adopts refractory materials to make insulation blocks, and each insulation structure is installed in the corresponding positioning tray in the vibrating conveying trough by means of center positioning, and the centers of each row of insulation blocks are on a straight line, and the centers of each column of insulation blocks are on a straight line, and a scrap steel heating cavity is formed on the upper end surface of the insulation block. The insulation block also forms a kind of protection for the vibrating conveying trough itself, reduces the temperature received by the vibrating conveying trough, and reduces the degree of its thermal deformation. The scrap steel heating cavity formed by the insulation block plays a role of heat preservation, which can make the temperature of the scrap steel in the upper and lower layers more uniform, reduce the temperature difference gradient, have a good heating effect, and save energy. Moreover, the present invention does not need to set air cooling or water cooling to cool the vibrating conveying trough, thereby reducing cost investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0015] Figure 2 The structure of the present invention is schematically shown Figure 2.

[0016] Figure 3 It is a schematic diagram of the assembly of a single thermal insulation structure of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example:

[0019] A combined heat-insulating structure for heating and conveying scrap steel, such as Figure 1 and 2 As shown, it includes several insulation structures 1, each insulation structure 1 is installed in a vibrating conveying trough 2, and buffer seals 3 are provided between adjacent insulation structures and between the insulation structure and the inner wall of the vibrating conveying trough. Each insulation structure includes an insulation block 4 and a positioning locking member 5. The insulation block is made of refractory material, and the refractory material itself can withstand the temperature of the scrap heating stage.

[0020] In order to accurately and reduce vibration damage, a number of positioning trays 6 arranged in a vertical and horizontal interval are arranged in the vibration conveying trough 2. The positioning trays are welded in the vibration conveying trough, and the positioning trays 6 correspond to the insulation structure one by one. The insulation block 4 is installed in the positioning trays; there are sealed filling cavities reserved between the positioning trays 6 in adjacent rows, between the positioning trays 6 in adjacent columns, and between the positioning trays and the inner wall of the vibration conveying trough, and the buffer seal 3 is located in the sealed filling cavity. The periphery of the positioning tray is upturned, which can play a certain role in limiting the insulation block and also guide the installation.

[0021] In addition, a buffer seal 3 is filled between the insulation block 4 and the positioning tray 6 to further protect the insulation block. The buffer seal 3 is a fiber seal that shrinks when heated and expands when cooled. The fiber seal has the properties of shrinking when heated and expanding when cooled, providing space for the insulation block and the steel plate of the vibrating conveyor trough to deform due to heat, and also plays a shock-absorbing and buffering role.

[0022] When performing center positioning installation, Figure 3 As shown, the heat insulation block 4 is provided with a positioning locking hole 41, and the positioning locking member 5 passes through the positioning locking hole 41 to install the heat insulation block 4 in the vibration conveying trough.

[0023] In order to facilitate locking, the insulation block 4 is provided with an auxiliary mounting hole 42, which is located above the locking positioning hole 41 and communicates with the locking positioning hole 41, and the inner diameter of the auxiliary mounting hole 42 is larger than the inner diameter of the locking positioning hole 41. The auxiliary mounting hole is provided to conceal the locking positioning piece for installation.

[0024] The locking positioning member 5 includes a locking bolt 51, a locking nut 55 and an elastic washer 53. The locking bolt 51 is connected to the locking nut after being exposed from the vibration conveying groove, and the locking bolt is sleeved with an elastic washer 53, which is located between the locking nut and the vibration conveying groove. The elastic washer can be used in a scrap steel heating environment and can reduce the vibration of the locking bolt to prevent it from being separated from the locking nut during vibration.

[0025] The heat insulation structure forms a heat preservation and heating chamber, which can evenly heat the scrap steel on the upper part of the heat insulation structure, reduce the temperature gradient between the upper and lower layers of scrap steel, and also reduce the temperature that the vibration conveyor trough contacts, thus extending the service life. Because each heat insulation structure vibrates with the vibration conveyor trough, in order to avoid collision between them and deformation of the steel plate of the vibration conveyor trough due to heat, a buffer seal is filled to solve the problem.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A combined heat-insulating structure for heating and conveying scrap steel, characterized in that: The invention comprises a plurality of heat insulation structures (1), each heat insulation structure (1) is installed in a vibrating conveying trough (2), and a buffer seal (3) is arranged between adjacent heat insulation structures and between the heat insulation structure and the inner wall of the vibrating conveying trough; each of the heat insulation structures comprises a heat insulation block (4) and a locking positioning member (5); the heat insulation block (4) is provided with a locking positioning hole (41), and the locking positioning member (5) passes through the locking positioning hole (41) to install the heat insulation block (4) in the vibrating conveying trough; a scrap heating cavity is formed on the upper end surface of the heat insulation block to reduce the temperature received by the vibrating conveying trough, and the scrap heating cavity formed by the heat insulation block plays a role of heat preservation, so that the temperature of the scrap steel in the upper and lower layers is relatively uniform, thereby reducing the temperature gradient; and no air cooling or water cooling is arranged to cool the vibrating conveying trough.

2. The combined heat-insulating structure for heating and conveying scrap steel according to claim 1, characterized in that: A plurality of positioning trays (6) arranged in a vertical and horizontal spacing are arranged in the vibrating conveying trough (2), the positioning trays (6) correspond to the heat insulation structure one by one, and the heat insulation block (4) is installed in the positioning tray; a sealed filling cavity is reserved between the positioning trays (6) in adjacent rows, between the positioning trays (6) in adjacent columns, and between the positioning trays and the inner wall of the vibrating conveying trough, and the buffer seal (3) is located in the sealed filling cavity.

3. The combined heat-insulating structure for heating and conveying scrap steel according to claim 2 is characterized in that: A buffer seal (3) is filled between the heat insulation block (4) and the positioning tray (6).

4. The combined heat-insulating structure for heating and conveying scrap steel according to claim 1, 2 or 3, characterized in that: The buffer seal (3) is a fiber seal that shrinks when heated and expands when cooled.

5. The combined heat-insulating structure for heating and conveying scrap steel according to claim 2, characterized in that: The heat insulation block (4) is provided with an auxiliary mounting hole (42), the auxiliary mounting hole (42) is located above the locking positioning hole (41) and communicates with the locking positioning hole (41), and the inner diameter of the auxiliary mounting hole (42) is greater than the inner diameter of the locking positioning hole (41).

6. The combined heat-insulating structure for heating and conveying scrap steel according to claim 1 or 2, characterized in that: The locking positioning member (5) comprises a locking bolt (51), a locking nut (55) and an elastic washer (53); the locking bolt (51) is connected to the locking nut after being exposed from the vibration conveying trough; the elastic washer (53) is sleeved on the locking bolt; and the elastic washer (53) is located between the locking nut and the vibration conveying trough.

7. The combined heat-insulating structure for heating and conveying scrap steel according to claim 2, characterized in that: The positioning tray is welded in the vibrating conveying trough.

8. The combined heat-insulating structure for heating and conveying scrap steel according to claim 1, characterized in that: The heat insulating block is a heat insulating block made of refractory material.

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