Heating furnace for forgings

Abstract

The heating furnace comprises a heating furnace body, a through hole is formed in the front side of the top end of the heating furnace body, a furnace door is assembled in an inner cavity of the through hole, sliding grooves are symmetrically formed in the left side and the right side of the furnace door, and one ends of guide blocks are symmetrically arranged on the left side and the right side of the through hole; and hydraulic cylinders are connected to the left side and the right side of the top end of the heating furnace through screws, and the output ends of the upper surfaces of the hydraulic cylinders are fixedly connected to the outer wall of the furnace door. The device is simple in structure and reasonable in design, the temperature in the furnace chamber can be locked when the furnace door is opened, temperature loss is reduced to the maximum extent, energy is saved, waste is avoided, the stability of heating in the furnace can be improved, the quality of machined forgings is remarkably improved, and the production cost is reduced. In addition, thermal stress change is reduced, a furnace body, a heating element and the like can be protected, the service life is prolonged, use is flexible, practicability is high, and the use requirement on the existing market is met.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, specifically a heating furnace for forging. Background Technology

[0002] In the forging industry, the heating furnace is a key piece of equipment in the forging production process, and its main function is to heat the forgings to a suitable processing temperature. However, existing forging heating furnaces have a significant problem: a large amount of heat is lost when the furnace door is opened.

[0003] When the furnace door needs to be opened for loading, unloading, or other operations, a significant temperature difference is created between the high-temperature environment inside the furnace and the external environment. Due to the principles of heat transfer, heat rapidly flows from the high-temperature furnace interior to the low-temperature external environment. This heat loss can lead to a series of adverse consequences.

[0004] From an energy utilization perspective, heat loss means energy waste. To restore the furnace temperature to a suitable processing temperature, a significant amount of additional energy is required to reheat the furnace space and forgings, increasing production costs and reducing energy efficiency. Especially in large-scale production, the cumulative heat loss caused by frequent furnace door opening operations is considerable, which contradicts current industrial development requirements for energy conservation and emission reduction.

[0005] From a process perspective, heat loss due to opening the furnace door can cause instability in the furnace temperature field. Uneven temperature changes may affect the heating quality of forgings, such as causing localized excessively low temperatures or uneven temperature distribution. This can lead to quality problems in subsequent forging processes, such as forging cracks and uneven microstructure, reducing product yield and impacting production efficiency and product quality.

[0006] Furthermore, a sudden and significant loss of heat can cause thermal stress on the structure and components of the heating furnace. Long-term changes in thermal stress can accelerate damage to critical components such as the furnace body and heating elements, increasing maintenance costs and shortening the equipment's lifespan.

[0007] Based on the above shortcomings, a heating furnace for forging is now introduced to improve upon them. Utility Model Content

[0008] The purpose of this invention is to provide a heating furnace for forgings to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a heating furnace for forging, comprising a heating furnace, a through hole on the front side of the top of the heating furnace, a furnace door fitted into the inner cavity of the through hole, symmetrically provided sliding grooves on both the left and right sides of the furnace door, one end of a guide block symmetrically provided on both the left and right sides of the through hole, and the other end of the guide block extending into the inner cavity of the sliding groove, hydraulic cylinders screwed to both the left and right sides of the top of the heating furnace, the upper surface output end of the hydraulic cylinders fixedly connected to the outer wall of the furnace door, an air curtain machine screwed to the front side of the furnace door, a distance sensor installed at the center of the rear side of the bottom of the furnace door, and a pad installed at the center of the front side of the top of the heating furnace.

[0010] Preferably, a ladder is installed on the left side of the heating furnace.

[0011] Preferably, the furnace door is L-shaped.

[0012] Preferably, the hydraulic cylinder, the air curtain machine, and the distance sensor are all electrically connected to each other.

[0013] Preferably, the air outlet of the air curtain machine is located at its bottom end, and the width of the air outlet is greater than the width of the furnace cavity of the heating furnace.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This forging heating furnace, through the cooperation of the slide, guide block and hydraulic cylinder, can drive the furnace door and all structural components on the furnace door to move up or down together. Through the cooperation of the distance sensor and the pad, the horizontal position height of the furnace door can be detected. That is, when the furnace door moves upward and opens, the distance sensor will detect that the distance between it and the pad increases. At this time, the air curtain will automatically open. The hot air blown out from below the air curtain can form an air wall, which can not only lock the temperature in the furnace cavity to prevent loss, but also prevent foreign objects in the outside air, such as dust and impurities, from entering the furnace. The device has a simple structure and reasonable design. It can lock the temperature in the furnace cavity when the furnace door is open, minimizing temperature loss. This not only saves energy and avoids waste, but also improves the stability of heating in the furnace, resulting in a significant improvement in the quality of the forgings after processing. In addition, reducing the change of thermal stress can protect the furnace body, heating elements, etc., and extend their service life. It is flexible in use, highly practical, and meets the needs of the current market. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0017] Figure 3This is a schematic diagram of the rear structure of the hydraulic cylinder of this utility model.

[0018] In the diagram: 1. Heating furnace, 2. Through hole, 3. Furnace door, 4. Slide groove, 5. Guide block, 6. Hydraulic cylinder, 7. Air curtain machine, 8. Distance sensor, 9. Pad plate, 10. Ladder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a heating furnace for forging, including a heating furnace 1. A through hole 2 is provided on the front side of the top of the heating furnace 1. A furnace door 3 is installed in the inner cavity of the through hole 2. Sliding grooves 4 are symmetrically provided on the left and right sides of the furnace door 3. One end of a guide block 5 is symmetrically provided on the left and right sides of the through hole 2, and the other end of the guide block 5 extends into the inner cavity of the sliding groove 4. A hydraulic cylinder 6 is screwed to the left and right sides of the top of the heating furnace 1. The upper surface output end of the hydraulic cylinder 6 is fixedly connected to the outer wall of the furnace door 3. An air curtain machine 7 is screwed to the front side of the furnace door 3. A distance sensor 8 is installed at the center of the rear side of the bottom of the furnace door 3. A pad 9 is installed at the center of the front side of the top of the heating furnace 1. The pad 9 is located directly below the distance sensor 8. The distance sensor 8 can detect the distance between itself and the pad 9. When the distance increases, the air curtain machine 7 will automatically open; otherwise, the air curtain machine 7 will automatically close.

[0021] As a preferred option, a ladder 10 is installed on the left side of the heating furnace 1, which facilitates the inspection and maintenance of the top of the heating furnace 1.

[0022] As a preferred option, the furnace door 3 is further designed in an "L" shape.

[0023] As a preferred option, the hydraulic cylinder 6, the air curtain 7, and the distance sensor 8 are all electrically connected to each other.

[0024] As a preferred option, the air outlet of the air curtain machine 7 is located at its bottom, and the width of the air outlet is greater than the width of the furnace cavity of the heating furnace 1, so as to ensure that the hot air discharged from below the air curtain machine 7 can completely cover the furnace cavity.

[0025] All electrical components mentioned in this solution are existing technologies, and their models are only one of them. Any electrical component that can achieve the purpose of this solution can be used.

[0026] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control. The specific work is as follows.

[0027] In operation, hydraulic cylinder 6 is activated, which pushes furnace door 3, causing all structural components mounted on its outer wall to move upward or downward together. When furnace door 3 opens upward, distance sensor 8 gradually moves away from pad 9. When distance sensor 8 detects an increase in the distance between itself and pad 9, air curtain 7 automatically activates. The hot air blown out from below air curtain 7 forms an air wall, which not only locks the temperature inside furnace 1 within the furnace cavity to prevent loss, but also prevents foreign objects in the outside air, such as dust and impurities, from entering furnace 1. When furnace door 3... When the air curtain is lowered to close, the distance sensor 8 gradually approaches the pad 9. When the distance sensor 8 detects that the distance between it and the pad 9 has decreased, the air curtain 7 automatically closes. This device has a simple structure and reasonable design. It can lock the temperature in the furnace cavity when the furnace door 3 is open, minimizing temperature loss. This not only saves energy and avoids waste, but also improves the stability of heating in the furnace, resulting in a significant improvement in the quality of forgings after processing. In addition, reducing changes in thermal stress can protect the furnace body, heating elements, etc., extending their service life. It is flexible in use, highly practical, and suitable for widespread application.

[0028] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "center position," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "clamping," "plugging," "welding," "installation," "setting," "interference fit," "screw connection," and "pin connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction relationship between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

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

Claims

1. A heating furnace for forging, comprising a heating furnace (1), characterized in that: The top front of the heating furnace (1) is provided with a through hole (2), and the inner cavity of the through hole (2) is equipped with a furnace door (3). The left and right sides of the furnace door (3) are symmetrically provided with sliding grooves (4). The left and right sides of the through hole (2) are symmetrically provided with one end of a guide block (5), and the other end of the guide block (5) extends into the inner cavity of the sliding groove (4). The top left and right sides of the heating furnace (1) are screwed with hydraulic cylinders (6). The upper surface output end of the hydraulic cylinder (6) is fixedly connected to the outer wall of the furnace door (3). The front side of the furnace door (3) is screwed with an air curtain machine (7). The bottom rear center of the furnace door (3) is equipped with a distance sensor (8). The top front center of the heating furnace (1) is equipped with a pad (9).

2. The heating furnace for forgings according to claim 1, characterized in that: A ladder (10) is installed on the left side of the heating furnace (1).

3. The heating furnace for forgings according to claim 1, characterized in that: The furnace door (3) is L-shaped.

4. A heating furnace for forgings according to claim 1, characterized in that: The hydraulic cylinder (6), the air curtain machine (7), and the distance sensor (8) are all electrically connected to each other.

5. A heating furnace for forgings according to claim 1, characterized in that: The air outlet of the air curtain machine (7) is located at its bottom end, and the width of the air outlet is greater than the width of the furnace cavity of the heating furnace (1).

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