Curtain-shaped furnace door for heating furnace

Abstract

The utility model belongs to the technical field of heating furnace doors, and particularly discloses a curtain-shaped furnace door for a heating furnace, which comprises a supporting beam and a connecting component, a supporting mechanism is arranged on the supporting beam, a furnace door is arranged on the supporting mechanism, the furnace door is composed of a plurality of furnace door strips, and each furnace door strip is formed by connecting a one-way connecting block and a plurality of two-way connecting blocks end to end. Each bidirectional connecting block is provided with a groove, the one-way connecting blocks are located at the tail ends of the furnace door strips, the one-way connecting blocks are fixedly connected with protruding blocks, the protruding blocks and the grooves are connected in a clamped mode, the protruding blocks and the grooves are movably connected through connecting assemblies, and due to the fact that the adjacent furnace door strips are attached to each other, when materials are added, the furnace door is opened by the materials, and only the materials can pass through the openings. The problems that in the prior art, in the material adding process of a heating furnace, the whole furnace door is frequently opened, cold air enters a hearth, flames in the furnace escape outwards, and heat in the furnace is lost are solved.

Description

Technical Field

[0001] This utility model relates to the field of furnace door technology for heating furnaces, and specifically to a curtain-shaped furnace door for heating furnaces. Background Technology

[0002] A heating furnace is a device that heats materials to a specific temperature for subsequent processing or treatment. It is widely used in many industries, especially in metallurgy, petroleum, chemical, and machinery. In the metallurgical industry, heating furnaces are often used for processes such as preheating steel billets, forging, and rolling. A heating furnace mainly consists of the following key parts: a load-bearing frame, furnace walls, furnace roof, furnace bottom, burners, and a ventilation system. The furnace wall has an inlet for adding materials. The furnace door isolates the internal and external environments of the furnace chamber, preventing heat loss and the entry of cold air, thereby ensuring a stable temperature inside the furnace chamber. The furnace door also facilitates operations such as loading and maintenance by workers. The furnace door is usually a single unit, but during the material loading process, it is unavoidable to open the entire furnace door. At this time, cold air enters the furnace chamber, and the flame inside the furnace escapes, causing heat loss and reducing the heating efficiency of the furnace. Utility Model Content

[0003] The purpose of this invention is to provide a curtain-shaped furnace door for a heating furnace, in order to solve the problem in the prior art where the entire furnace door is frequently opened during the material addition process, resulting in cold air entering the furnace chamber, flames escaping from the furnace, and heat loss from the furnace.

[0004] To achieve the above objectives, the basic solution provided by this utility model is as follows: a curtain-shaped furnace door for a heating furnace, comprising a support beam and a connecting assembly. The support beam is provided with a support mechanism, and the support mechanism is provided with a furnace door. The furnace door is composed of several furnace door strips. Each furnace door strip is connected end to end by a one-way connecting block and several two-way connecting blocks. A protrusion is fixedly connected to each two-way connecting block, and a groove is opened on each two-way connecting block. The one-way connecting block is located at the end of the furnace door strip, and a protrusion is fixedly connected to the one-way connecting block. The protrusion and the groove are engaged, and the protrusion and the groove are movably connected by the connecting assembly.

[0005] The principle and beneficial effects of this utility model are as follows: During installation, the support beam is fixed above the furnace opening of the heating furnace. First, several bidirectional connecting blocks are connected end to end by protrusions and grooves, so that the bidirectional connecting blocks are connected end to end to form a furnace door strip. The end of the furnace door strip is a unidirectional connecting block. Then, the protrusions and grooves are movably connected by connecting components, so that the lower protrusions can rotate up and down in the upper grooves, thereby allowing the bidirectional connecting blocks to be folded longitudinally. There are several furnace door strips on the support mechanism, and several furnace door strips form a furnace door. Because the adjacent furnace door strips are closely fitted to each other, when materials are added, the furnace door is pushed open by the materials, and the opening only allows the materials to pass through. After the materials are added, the furnace door strips will automatically droop down and return to the furnace door, eliminating the need for manual opening and closing of the furnace door. At the same time, it reduces the heat loss inside the furnace, thereby increasing the heating efficiency of the heating furnace.

[0006] Option 2, a preferred embodiment of the basic option, includes a support mechanism comprising a cylinder, a connecting block, a through shaft, and two fixed pulleys. A support beam is fixedly connected to the two fixed pulleys, and a through hole is opened on the support beam. An iron chain is fixedly connected to the telescopic end of the cylinder. The free end of the iron chain passes around the two fixed pulleys in sequence and moves through the through hole. The free end of the iron chain and the through shaft are connected by the connecting block. The through shaft moves through several bidirectional connecting blocks, and limiting components for fixing the bidirectional connecting blocks are provided at both ends of the through shaft. In this support mechanism, the fixed pulleys can reduce the friction of the iron chain, thereby extending the service life of the iron chain.

[0007] Option 3, a preferred option of Option 2, includes two L-shaped tracks and two rolling bearings. Each L-shaped track is fixed to the support beam, and both ends of the through shaft are fixed to the inner ring of the rolling bearing. Each rolling bearing is tumbled within the L-shaped track. This limiting component limits the movement trajectory of the iron chain, reducing the left and right swaying of the curtain furnace door. The rolling bearings change sliding friction to rolling friction, reducing the wear of the through shaft and increasing its service life.

[0008] Option 4, a preferred option of the basic option, includes a connecting component consisting of a Torx bolt and a threaded hole on the bidirectional connecting block. The bidirectional connecting block and the Torx bolt are threaded together, and the protrusion and the Torx bolt are movably connected through it. During installation, after the protrusion and the groove are snapped together, the Torx bolt is then passed through two adjacent bidirectional connecting blocks. The Torx bolt and the bidirectional connecting block are then tightened using a matching Torx screwdriver. This connecting component ensures that no gaps are generated when the protrusion rotates up and down in the groove, reducing heat loss from the furnace.

[0009] Option 5, which is an optimal choice of Option 4, features trapezoidal cross-sections for both the protrusion and the groove. When the protrusion and groove are engaged, the pressure on the Torx bolt is reduced, thus increasing the service life of the Torx bolt.

[0010] Option 6 is the preferred option of the basic option. Both the bidirectional connecting block and the unidirectional connecting block are made of high-temperature resistant material, namely 30CrMO. Attached Figure Description

[0011] Figure 1 This is a perspective view of a curtain-shaped furnace door for a heating furnace according to the present invention;

[0012] Figure 2 This is a right view of a curtain-shaped furnace door for a heating furnace according to this utility model;

[0013] Figure 3 This is an exploded view of the bidirectional connecting block, the unidirectional connecting block, and the plum blossom bolt in a curtain-shaped furnace door for a heating furnace according to this utility model. Detailed Implementation

[0014] The present invention will be further described in detail below through specific embodiments:

[0015] The reference numerals in the accompanying drawings of the instruction manual include: 1. bidirectional connecting block, 2. unidirectional connecting block, 3. furnace door, 4. plum bolt, 5. protrusion, 6. groove, 7. connecting block, 8. through shaft, 10. rolling bearing, 11. L-shaped track, 12. iron chain, 13. support beam, 14. fixed pulley, 15. cylinder.

[0016] Example

[0017] like Figures 1 to 3 As shown: A curtain-shaped furnace door for a heating furnace includes a support beam 13 and a connecting assembly. The support beam 13 is equipped with a support mechanism, which includes a cylinder 15, a connecting block 7, a through shaft 8, and two fixed pulleys 14. The support beam 13 and the two fixed pulleys 14 are fixedly connected. A through hole is opened in the support beam 13. An iron chain 12 is fixedly connected to the telescopic end of the cylinder 15. The cylinder 15 is model 695ST. The free end of the iron chain 12 passes around the two fixed pulleys 14 and through the through hole. The free end of the iron chain 12 and the through shaft 8 are connected by the connecting block 7. A furnace door 3 is provided on the through shaft 8. The furnace door 3 is divided into several furnace door strips. Several bidirectional connecting blocks 1 movably pass through the through shaft 8. Each furnace door strip is connected end-to-end by a unidirectional connecting block 2 and several bidirectional connecting blocks 1. A protrusion 5 is fixedly connected to each bidirectional connecting block 1, and a groove is opened in each bidirectional connecting block 1. 6. The protrusion 5 and the groove 6 are engaged. The one-way connecting block 2 is located at the tail end of the furnace door strip. The protrusion 5 is fixed on the one-way connecting block 2. The cross-section of both the protrusion 5 and the groove 6 is trapezoidal. The protrusion 5 and the groove 6 are movably connected by a connecting component. The connecting component includes a plumb bob 4. The two-way connecting block 1 is provided with a threaded hole. The two-way connecting block 1 and the plumb bob 4 are threadedly connected. The protrusion 5 and the plumb bob 4 are movably connected through. The two ends of the through shaft 8 are provided with limiting components for limiting the two-way connecting block 1. The limiting components include two L-shaped rails 11 and two rolling bearings 10. Each L-shaped rail 11 is fixedly connected to the support beam 13. The two ends of the through shaft 8 are fixedly connected to the inner ring of the rolling bearing 10. Each rolling bearing 10 is tumbled within the L-shaped rail 11. Both the two-way connecting block 1 and the one-way connecting block 2 are made of high-temperature resistant material. The high-temperature resistant material is 30CrMO.

[0018] The implementation method of this embodiment is as follows: During installation, the support beam 13 is first fixed above the furnace opening of the heating furnace. Then, several bidirectional connecting blocks 1 are snapped together by the protrusions 5 and the grooves 6. Next, the Phillips bolts 4 are inserted through two adjacent bidirectional connecting blocks 1. The Phillips bolts 4 and the bidirectional connecting blocks 1 are tightened with the matching Phillips screwdriver, so that several bidirectional connecting blocks 1 are connected end to end to form a furnace door strip. The end of the furnace door strip is a unidirectional connecting block 2. Since the Phillips bolts 4 and the protrusions 5 are inserted movably, the adjacent protrusions 5 are secured in the grooves 6 by the Phillips bolts. 4 is the shaft that rotates up and down, so that the furnace door strips can be folded longitudinally. Several furnace door strips are connected to form a furnace door 3. Then, the iron chain 12 on the telescopic end of the cylinder 15 passes around two fixed pulleys 14 and finally passes through the through hole on the support beam 13. The free end of the iron chain 12 and the through shaft 8 are connected by the connecting block 7. Since the two adjacent furnace door strips are close to each other, when materials are added, the furnace door 3 is pushed open by the materials, and the opening only allows the materials to pass through. After the materials are added, the furnace door strips will automatically hang down and return to the furnace door 3. There is no need to manually open and close the furnace door 3.

[0019] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A curtain-shaped furnace door for a heating furnace, characterized in that, Includes a support beam (13) and a connecting assembly. The support beam (13) is provided with a support mechanism, and the support mechanism is provided with a furnace door (3). The furnace door (3) is composed of several furnace door strips. Each furnace door strip is connected end to end by a one-way connecting block (2) and several two-way connecting blocks (1). Each two-way connecting block (1) is fixed with a protrusion (5) and a groove (6) is opened on each two-way connecting block (1). The one-way connecting block (2) is located at the end of the furnace door strip. The one-way connecting block (2) is fixed with a protrusion (5). The protrusion (5) and the groove (6) are engaged. The protrusion (5) and the groove (6) are movably connected by the connecting assembly.

2. The curtain-shaped furnace door for a heating furnace according to claim 1, characterized in that, The support mechanism includes a cylinder (15), a connecting block (7), a through shaft (8), and two fixed pulleys (14). The support beam (13) and the two fixed pulleys (14) are fixedly connected. The support beam (13) has a through hole. An iron chain (12) is fixedly connected to the telescopic end of the cylinder (15). The free end of the iron chain (12) passes around the two fixed pulleys (14) in sequence and moves through the through hole. The free end of the iron chain (12) and the through shaft (8) are connected by the connecting block (7). The through shaft (8) moves through several bidirectional connecting blocks (1). The two ends of the through shaft (8) are provided with limiting components for fixing the bidirectional connecting blocks (1).

3. A curtain-shaped furnace door for a heating furnace according to claim 2, characterized in that, The limiting assembly includes two L-shaped rails (11) and two rolling bearings (10). Each L-shaped rail (11) is fixedly connected to a support beam (13). Both ends of the through shaft (8) are fixedly connected to the inner ring of the rolling bearing (10). Each rolling bearing (10) is tumbledly connected to the L-shaped rail (11).

4. A curtain-shaped furnace door for a heating furnace according to claim 1, characterized in that, The connecting assembly includes a plum bolt (4), the bidirectional connecting block (1) is provided with a threaded hole, the bidirectional connecting block (1) and the plum bolt (4) are threadedly connected, and the plum bolt (4) and the protrusion (5) are movably connected through each other.

5. A curtain-shaped furnace door for a heating furnace according to claim 4, characterized in that, The cross-sections of the protrusion (5) and the groove (6) are both trapezoidal.

6. A curtain-shaped furnace door for a heating furnace according to claim 1, characterized in that, Both the bidirectional connecting block (1) and the unidirectional connecting block (2) are made of high-temperature resistant materials.

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