A red-hot heating furnace

Abstract

The present invention provides a red-punching heating furnace, which belongs to the field of red-punching processing technology. It solves the problem of poor heating effect of the existing red-punching heating furnace. The red-punching heating furnace is used to heat copper rods, and includes a furnace body, the length of which matches the above-mentioned copper rods, and is characterized in that: a plurality of closed inner cavities are provided in the furnace body along the length direction of the furnace body, and the closed inner cavity includes a heating chamber located at the upper part and a combustion chamber located at the lower part; at least one row of first gas inlet holes for inputting gas into the combustion chamber is provided at the bottom of the combustion chamber; the bottom of the heating chamber is connected to the combustion chamber and is provided with a supporting structure for supporting the above-mentioned copper rods. The red-punching heating furnace has the advantage of significant heating effect.

Description

Technical Field

[0001] The invention belongs to the technical field of hot-punching processing, in particular to a hot-punching heating furnace. Background Art

[0002] The hot punching machine, also known as the warm upsetting machine, uses electromagnetic induction heating in a medium frequency furnace or acetylene or liquefied gas to heat the material, and uses the upsetting pressure of the machine to automatically feed, cut, punch, and blank. The product is formed in the mold at one time, and irregular parts such as spheres, hexagons, cylinders, and valve bodies can be upset. In the product molding process, in order to better mold, the material (usually a copper rod) needs to be preheated in a hot punching heating furnace. When the copper rod is heated to red, it enters the next step of cutting and punching process. However, the heating effect of the existing hot punching heating furnace is not ideal, resulting in low overall production efficiency. In view of the above problems, it is necessary to improve it. Summary of the invention

[0003] The purpose of the present invention is to solve the above technical problems and propose a hot-dip heating furnace.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A red-hot heating furnace, used for heating copper rods, comprises a furnace body, the length of which matches the above-mentioned copper rods, and is characterized in that: a plurality of closed inner cavities are arranged in the furnace body along the length direction of the furnace body, and the closed inner cavities include a heating chamber located at the upper part and a combustion chamber located at the lower part; at least one row of first gas inlet holes for inputting gas into the combustion chamber is arranged at the bottom of the combustion chamber; the bottom of the heating chamber is connected to the combustion chamber and is provided with a supporting structure for supporting the above-mentioned copper rods.

[0006] In the above-mentioned red-hot heating furnace, there are two closed inner cavities, and the furnace body includes an insulation board, a copper rod rack, a flame-spraying plate and a side plate; the insulation board and the copper rod rack enclose a first space, and the first space is divided into the two above-mentioned heating cavities by a first connecting plate; the copper rod rack, the flame-spraying plate and the side plate enclose a second space, and the second space is divided into the two above-mentioned combustion cavities by a second connecting plate.

[0007] In the above-mentioned red-hot heating furnace, two of the above-mentioned supporting structures are provided on the copper rod rack, and the supporting structure includes a supporting part and a channel opened at the bottom of the above-mentioned heating chamber; the supporting part includes two first inclined surfaces for supporting the copper rods, and a plurality of guide grooves are opened on the first inclined surfaces; the two above-mentioned first inclined surfaces are inclined with respect to the channel and symmetrically arranged on both sides of the channel, the channel is located below the two above-mentioned first inclined surfaces and is connected with the above-mentioned guide grooves, and the above-mentioned heating chamber and combustion chamber are connected through the channel.

[0008] In the above-mentioned hot-dip heating furnace, the slotting direction of the guide slot is perpendicular to the axial direction of the above-mentioned copper rod.

[0009] In the above-mentioned hot-dip heating furnace, the inclination angles between the two first inclined surfaces and the channel are both 45 degrees, that is, the angle between the two first inclined surfaces is 90 degrees.

[0010] In the above-mentioned hot-dip heating furnace, a plurality of reinforcing ribs evenly spaced are fixedly connected to the channel.

[0011] In the above-mentioned red-hot heating furnace, two flame-spraying structures are provided on the flame-spraying plate, and the two flame-spraying structures are respectively located in the two above-mentioned combustion chambers, and the flame-spraying structure includes two rows of evenly distributed first gas inlet holes, which are the first main gas inlet holes that can burn to form the main flame and the first auxiliary gas inlet holes that can burn to form the auxiliary flame.

[0012] In the above-mentioned red-hot heating furnace, the flame-spraying plate is provided with a first convex edge just above the first auxiliary fuel gas inlet hole, and the lower end face of the first convex edge is a second inclined surface, which can guide the outer flame of the auxiliary flame into the inner flame of the main flame.

[0013] In the above-mentioned red-hot heating furnace, the flame-spraying plate is provided with a first convex edge at a position directly above the first auxiliary gas inlet hole, and the lower end face of the first convex edge is a second inclined surface; the flame-spraying plate is provided with a second convex edge at a position directly above the first main gas inlet hole, and the lower end face of the second convex edge is a third inclined surface, and the third inclined surface and the second inclined surface can respectively guide the main flame and the auxiliary flame to the center position of the channel.

[0014] In the above-mentioned red-hot heating furnace, the furnace body also includes a gas chamber located at the bottom of the furnace, and the two above-mentioned combustion chambers are connected to the gas chamber through the first gas inlet holes in the two flame-spraying structures respectively, and a second gas inlet hole is opened at the bottom of the gas chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention has good integrity and sealing, greatly reduces the heat loss in the furnace and can effectively avoid the problem of fire caused by loose sealing, and has a high safety factor.

[0017] 2. The present invention sets heating airflows on both sides through the guide groove. Compared with the unidirectional heating at the bottom, the hot airflow will not be blocked, thereby achieving all-round heating of the copper rod, reducing heat loss and improving the heating effect.

[0018] 3. The convex edge in the present invention guides the outer flame of the auxiliary flame into the inner flame of the main flame to increase the temperature of the inner flame of the main flame, thereby improving the heating rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 The left view of the present invention Figure 1 .

[0021] Figure 3 It is a structural schematic diagram of the copper rod rack in the present invention.

[0022] Figure 4 It is a structural schematic diagram of the flame spraying plate in the present invention.

[0023] Figure 5 The left view of the present invention Figure 2 .

[0024] In the figure, 1, closed inner cavity; 1a, heating cavity; 1b, combustion cavity; 2, copper rod; 3, heat insulation board; 4, copper rod rack; 5, flame plate; 51, first gas inlet hole; 51a, first main gas inlet hole; 51b, first auxiliary gas inlet hole; 52, first convex edge; 53, second convex edge; 54, second inclined surface; 55, third inclined surface; 6, side plate; 7, first connecting plate; 8, second connecting plate; 9, supporting part; 91, first inclined surface; 92, guide groove; 10, channel; 11, reinforcing rib; 12, gas cavity; 13, second gas inlet hole. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figures 1 to 4 As shown, the present Hongchong heating furnace is used to heat the copper rod 2, and includes a furnace body, the length of which matches the copper rod 2. The Hongchong heating furnace can heat the entire copper rod 2 at the same time, thereby shortening the heating time. A plurality of closed inner chambers 1 are provided in the furnace body along the length direction of the furnace body, and the closed inner chamber 1 includes a heating chamber 1a located at the upper part and a combustion chamber 1b located at the lower part. The closed inner chamber 1 has good integrity and sealing. The copper rod 2 is placed in the closed inner chamber 1 for heating, which greatly reduces the heat loss in the furnace and can effectively avoid the problem of jumping fire caused by poor sealing, and has a high safety factor. The bottom of the combustion chamber 1b is provided with at least one row of first gas inlet holes 51 for inputting gas into the combustion chamber 1b. More first gas inlet holes 51 can quickly heat the copper rod 2. The bottom of the heating chamber 1a is connected to the combustion chamber 1b and is provided with a supporting structure for supporting the copper rod 2.

[0027] As a further optimization of the embodiment, the number of the closed inner chambers 1 can be 1 to 10. Preferably, the embodiment has two closed inner chambers 1, which can heat two copper rods 2 at the same time. The furnace body includes a heat insulation board 3, a copper rod rack 4, a flame spraying board 5 and a side plate 6; the heat insulation board 3 and the copper rod rack 4 enclose a first space, which is divided into two heating chambers 1a by a first connecting plate 7; the copper rod rack 4, the flame spraying board 5 and the side plate 6 enclose a second space, which is divided into two combustion chambers 1b by a second connecting plate 8.

[0028] like Figure 3 As shown, the copper rod rack 4 is provided with two supporting structures, the supporting structures include a supporting portion 9 and a channel 10 opened at the bottom of the heating chamber 1a; the supporting portion 9 includes two first inclined surfaces 91 for supporting the copper rod 2, and a plurality of guide grooves 92 are opened on the first inclined surface 91, and the groove direction of the guide grooves 92 is perpendicular to the axial direction of the copper rod 2. The two first inclined surfaces are both inclined and arranged with respect to the channel and symmetrically arranged on both sides of the channel. The channel is located below the two first inclined surfaces 91 and is connected with the guide grooves 92, and the heating chamber 1a and the combustion chamber 1b are connected through the channel 10. The inclination angle between the two first inclined surfaces 91 and the channel 10 is 45 degrees, that is, the angle between the two first inclined surfaces 91 is 90 degrees.

[0029] The present invention places the copper rod 2 between two first inclined surfaces 91 with an angle of 90 degrees. The flame and hot air flow of the combustion chamber 1b can enter the heating chamber 1a from the side guide groove 92 and diffuse to the side and upper surface of the copper rod 2. Since the heating air flow is set on both sides, compared with the unidirectional heating at the bottom, the hot air flow will not be blocked, thereby realizing all-round heating of the copper rod 2 and reducing heat loss.

[0030] In addition, a plurality of reinforcing ribs 11 evenly spaced apart are fixedly connected to the channel 10. The reinforcing ribs 11 can enhance the connection strength of the copper rod frame 4, making it less likely to deform, thereby extending the service life of the present invention.

[0031] like Figure 4 As shown, two flame spraying structures are provided on the flame spraying plate 5, and the two flame spraying structures are respectively located in the two combustion chambers 1b. The flame spraying structures include two rows of evenly distributed first gas inlet holes 51, which are first main gas inlet holes 51a that can burn to form a main flame and first auxiliary gas inlet holes 51b that can burn to form an auxiliary flame; the flame spraying plate 5 is provided with a first convex edge 52 at a position directly above the first auxiliary gas inlet hole 51b, and the lower end surface of the first convex edge 52 is a second inclined surface 54, and the second inclined surface 54 can guide the outer flame of the auxiliary flame into the inner flame of the main flame.

[0032] The flame is generally divided into three parts, namely the inner layer, the middle layer and the outer layer; or it can be divided into the flame core, the inner flame and the outer flame, and the flame temperature increases from the inside to the outside. Inner layer: dark blue flame, due to insufficient oxygen supply, incomplete combustion, the lowest temperature, called the flame core. Middle layer: dark red or light yellow flame, bright, higher temperature than the inner layer, called the inner flame. Outer layer: colorless, due to sufficient oxygen supply, complete combustion, the highest temperature, called the outer flame. The innovation of the present invention is to use the convex edge 52 to guide the outer flame of the auxiliary flame into the inner flame of the main flame to increase the temperature of the inner flame of the main flame, thereby increasing the heating rate.

[0033] The present invention can be provided with not only the first convex edge 52 but also the second convex edge 53. Figure 5 As shown, a second convex edge 53 is arranged just above the first main gas inlet hole 51a, and the lower end surface of the second convex edge 53 is a third inclined surface 55. The third inclined surface 55 and the second inclined surface 54 can guide the main flame and the auxiliary flame to the center of the channel 10 respectively.

[0034] In addition, the furnace body also includes a gas chamber 12 at the bottom of the furnace, and the two combustion chambers 1b are connected to the gas chamber 12 through the first gas inlet holes 51 in the two flame spraying structures, and a second gas inlet hole 13 is opened at the bottom of the gas chamber 12. The present invention can use liquefied petroleum gas or natural gas as fuel.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] Although the terms such as closed inner cavity, heating cavity, combustion cavity, heat insulation board, copper rod rack, flame spraying board, convex edge, guide groove, channel, etc. are frequently used in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A hot-dip heating furnace for heating a copper rod (2), comprising a furnace body, the length of which matches the copper rod (2), and characterized in that: A plurality of closed inner chambers (1) are provided in the furnace body along the length direction of the furnace body, the closed inner chamber (1) comprising a heating chamber (1a) located at an upper portion and a combustion chamber (1b) located at a lower portion; the bottom of the combustion chamber (1b) is provided with at least one row of first gas inlet holes (51) for inputting gas into the combustion chamber (1b); the bottom of the heating chamber (1a) is connected to the combustion chamber (1b) and is provided with a support structure for supporting the copper rod (2). There are two closed inner chambers (1), and the furnace body comprises a heat insulation board (3), a copper rod rack (4), a flame spraying board (5) and a side plate (6); two of the above-mentioned support structures are arranged on the copper rod rack (4), and the support structure comprises a support portion (9) and a channel (10) opened at the bottom of the above-mentioned heating chamber (1a); the support portion (9) comprises two first inclined surfaces (91) for supporting the copper rods (2), and a plurality of guide grooves (92) are opened on the first inclined surfaces (91); the two first inclined surfaces (91) are arranged obliquely with the channel (10) and are symmetrically arranged on both sides of the channel (10), and the channel (10) is located below the two first inclined surfaces (91) and is connected to the guide grooves (92), and the above-mentioned heating chamber (1a) is provided with a plurality of guide grooves (92). The hot chamber (1a) and the combustion chamber (1b) are connected via the passage (10); the flame spraying plate (5) is provided with two flame spraying structures, the two flame spraying structures are respectively located in the two combustion chambers (1b), the flame spraying structures include two rows of evenly distributed first gas inlet holes (51), which are first main gas inlet holes (51a) capable of burning to form a main flame and first auxiliary gas inlet holes (51b) capable of burning to form an auxiliary flame; the flame spraying plate (5) is provided with a first convex edge (52) at a position directly above the first auxiliary gas inlet hole (51b), the lower end surface of the first convex edge (52) is a second inclined surface (54), and the second inclined surface (54) can guide the outer flame of the auxiliary flame into the inner flame of the main flame.

2. The hot-dip heating furnace according to claim 1, characterized in that: The heat insulation board (3) and the copper rod rack (4) enclose a first space, and the first space is divided into the two heating chambers (1a) by a first connecting plate (7); the copper rod rack (4), the flame spraying plate (5) and the side plate (6) enclose a second space, and the second space is divided into the two combustion chambers (1b) by a second connecting plate (8).

3. The hot-dip heating furnace according to claim 2, characterized in that: The slotting direction of the guide groove (92) is perpendicular to the axial direction of the copper rod (2).

4. The hot-dip heating furnace according to claim 2, characterized in that: The inclination angles between the two first inclined surfaces (91) and the channel (10) are both 45 degrees, that is, the included angle between the two first inclined surfaces (91) is 90 degrees.

5. The hot-dip heating furnace according to claim 4, characterized in that: The channel (10) is fixedly connected with a plurality of reinforcing ribs (11) arranged at even intervals.

6. The hot-dip heating furnace according to claim 2, characterized in that: The flame spray plate (5) is provided with a first convex edge (52) at a position directly above the first auxiliary fuel gas inlet hole (51b), and the lower end surface of the first convex edge (52) is a second inclined surface (54); the flame spray plate (5) is provided with a second convex edge (53) at a position directly above the first main fuel gas inlet hole (51a), and the lower end surface of the second convex edge (53) is a third inclined surface (55), and the third inclined surface (55) and the second inclined surface (54) can respectively guide the main flame and the auxiliary flame to the center position of the channel (10).

7. The hot-dip heating furnace according to claim 2, characterized in that: The furnace body further comprises a gas chamber (12) located at the bottom of the furnace, the two combustion chambers (1b) being connected to the gas chamber (12) via first gas inlet holes (51) in two flame spraying structures respectively, and a second gas inlet hole (13) is provided at the bottom of the gas chamber (12).

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