Gas-electric hybrid heating quenching furnace

Abstract

The utility model discloses a gas-electric hybrid heating quenching furnace which comprises a quenching furnace main body, a feed port arranged at a first end of the quenching furnace main body, a discharge port arranged at a second end of the quenching furnace main body, and a conveying unit, the conveying unit is arranged in the heating cavity; the output end of the driving unit is connected with the conveying unit; the heating unit comprises a first natural gas heating unit, a second natural gas heating unit, a first electric heating unit and a second electric heating unit, and the first natural gas heating unit and the second natural gas heating unit are arranged at the upper end and the lower end of the conveying unit correspondingly; the first electric heating unit and the second electric heating unit are arranged at the upper and lower ends of the conveying unit respectively. The positions of the heating units respectively enable heat to uniformly heat a workpiece from the upper direction and the lower direction, so that the problems of local overheating, deformation and the like are avoided, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of quenching furnaces, in particular to a gas-electric mixed heating quenching furnace. Background Art

[0002] The quenching furnace is a furnace for heating the plate before quenching. Quenching is to put the plate into the furnace and heat it to a quenching temperature above the critical point and keep it for a period of time, then quickly take the plate out of the furnace and put it into the quenching liquid for quenching.

[0003] Among the existing patents, the patent document with application number: CN202321464070.3 discloses a quenching device for processing engineering machinery parts, including a quenching furnace body, on which a quenching assembly is arranged, and the quenching assembly includes a furnace door, a heater, a fan, a controller and a workpiece placement plate; two sets of ejection assemblies are arranged inside the quenching furnace body, and a material discharge assembly is arranged at the bottom of the quenching furnace body; the ejection assembly includes an ejection plate and a linkage plate, the ejection plate can be rotatably mounted inside the quenching furnace body, and the linkage plate is fixedly mounted on the outer wall of the workpiece placement plate; the material discharge assembly includes a mounting frame, a threaded movable shaft, a push-out plate, a connecting frame and a movable rotary plate; the mounting frame is arranged at the bottom of the quenching furnace body, the threaded movable shaft can be rotatably arranged inside the mounting frame, the push-out plate is movably mounted inside the mounting frame through the connecting frame, and the movable rotary plate is arranged at the bottom of the workpiece placement plate. The utility model improves safety by arranging the ejection assembly and the material discharge assembly.

[0004] Quenching equipment generally adopts two methods of heating: electric heating or natural gas heating. Electric heating can control the temperature in the furnace by accurately controlling the current and voltage, thereby ensuring the stability and consistency of the heat treatment effect, but the energy consumption is high; natural gas heating heats up quickly and has high heating efficiency, but the temperature is difficult to control; and the existing quenching equipment heats unevenly, resulting in quality problems in the product. Therefore, it is necessary for us to improve such a structure to overcome the above defects. Utility Model Content

[0005] The utility model aims to provide a gas-electric mixed heating quenching furnace to solve the existing technical problems.

[0006] The above technical objectives of the utility model are achieved by using the following technical solutions:

[0007] A gas-electric hybrid heating quenching furnace comprises a quenching furnace body, a feed port arranged at a first end of the quenching furnace body, a discharge port arranged at a second end of the quenching furnace body, the interior of the quenching furnace body has a heating chamber, the heating chamber comprises a first heating area and a second heating area, and further comprises:

[0008] A conveying unit, which is arranged in the heating chamber and is used to drive the workpiece to move along the heating chamber and pass through the first heating area and the second heating area in sequence;

[0009] A driving unit, wherein the output end of the driving unit is connected to the conveying unit, and the driving unit is used to provide a driving force to drive the conveying unit to operate;

[0010] The heating unit is used to heat the workpiece. The heating unit includes a first natural gas heating unit, a second natural gas heating unit, a first electric heating unit and a second electric heating unit. The first natural gas heating unit and the second natural gas heating unit are located in the first heating area and are respectively arranged at the upper and lower ends of the conveying unit. The first electric heating unit and the second electric heating unit are located in the second heating area and are respectively arranged at the upper and lower ends of the conveying unit.

[0011] The utility model is further configured as follows: a barrier curtain is arranged on both the feed port and the discharge port to improve the sealing performance of the heating chamber and thus reduce heat loss.

[0012] The utility model is further configured as follows: the conveying unit comprises:

[0013] Conveying rollers, a plurality of conveying rollers are rotatably arranged on the inner wall of the quenching furnace body, and the conveying rollers are used to convey the workpieces.

[0014] The utility model is further configured as follows: the first natural gas heating unit and the second natural gas heating unit have the same structure and both include:

[0015] Heating tube, the heating tube is used to heat the workpiece;

[0016] An air inlet pipe, one end of which is connected to the heating pipe, and the other end of which is connected to an external natural gas source.

[0017] The utility model is further configured as follows: the first electric heating unit and the second electric heating unit have the same structure and both include:

[0018] A fixing plate, one end of which is fixed to the inner wall of the quenching furnace body, and the fixing plate has an installation space;

[0019] A heating element, one end of which is arranged on the fixed plate, and the heating end of the heating element is arranged toward the conveying unit, and is used for heating the workpiece on the conveying unit.

[0020] The utility model is further configured as follows: the heating element adopts an electric heating wire.

[0021] In summary, the utility model has the following beneficial effects:

[0022] 1. Uniform heating: The position distribution of the heating unit allows the heat to heat the workpiece evenly from both the upper and lower directions, avoiding problems such as local overheating and deformation, and improving product quality;

[0023] 2. Fast heating speed: By adopting two heating methods, natural gas heating and electric heating, the workpiece can be quickly heated to the required temperature through natural gas heating, and then the temperature is maintained through electric heating, which reduces the heating time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0025] Figure 2 It is one of the structural schematic diagrams of the utility model.

[0026] Figure 3 This is the second structural diagram of the present utility model.

[0027] Figure 4 It is a side view of the utility model.

[0028] Numeral symbols: quenching furnace body 1, feed port 11, discharge port 12, heating chamber 13, curtain 14, conveying unit 2, conveying roller 21, driving unit 3, heating unit 4, heating pipe 41, air inlet pipe 42, fixing plate 43, heating element 44 DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0030] like Figures 1 to 4 As shown, the utility model proposes a gas-electric hybrid heating quenching furnace, comprising a quenching furnace body 1, a feed port 11 arranged at a first end of the quenching furnace body 1, and a discharge port 12 arranged at a second end of the quenching furnace body 1. The quenching furnace body 1 has a heating chamber 13 inside, and the heating chamber 13 includes a first heating area and a second heating area, and also includes,

[0031] A conveying unit 2, which is disposed in the heating chamber 13 and is used to drive the workpiece to move along the heating chamber 13 and pass through the first heating area and the second heating area in sequence;

[0032] A driving unit 3, wherein the output end of the driving unit 3 is connected to the conveying unit 2, and the driving unit 3 is used to provide a driving force to drive the conveying unit 2 to operate;

[0033] The heating unit 4 is used to heat the workpiece. The heating unit 4 includes a first natural gas heating unit 4, a second natural gas heating unit 4, a first electric heating unit 4 and a second electric heating unit 4. The first natural gas heating unit 4 and the second natural gas heating unit 4 are located in the first heating area and are respectively arranged at the upper and lower ends of the conveying unit 2. The first electric heating unit 4 and the second electric heating unit 4 are located in the second heating area and are respectively arranged at the upper and lower ends of the conveying unit 2. The workpiece can be heated from both the upper and lower directions. The heat can evenly penetrate the workpiece, avoiding the problem of heat concentration on one side in the existing heating method, avoiding local excessive deformation of the workpiece, and improving the overall heating efficiency of the workpiece.

[0034] In this embodiment, a curtain 14 is provided on the feed port 11 and the discharge port 12 to prevent heat from being lost from these two ports, thereby improving the utilization rate of heat and reducing energy consumption. It is used to improve the sealing of the heating chamber 13 and thus reduce heat loss. Preferably, the curtain 14 is made of high temperature resistant material.

[0035] The conveying unit 2 includes a conveying roller 21, and a plurality of conveying rollers 21 are rotatably arranged on the inner wall of the quenching furnace body 1, and the conveying rollers 21 are used to convey the workpiece. The conveying rollers 21 are driven to rotate by the driving unit 3, thereby driving the workpiece placed on the conveying rollers 21 to move through the first heating area and the second heating area in sequence, and complete the natural gas heating and the electric heating in turn. The working principle of the driving unit 3 is the existing technology, and in order to avoid the document being too lengthy, it will not be described here.

[0036] In this embodiment, the first natural gas heating unit 4 and the second natural gas heating unit 4 have the same structure and both include a heating pipe 41, which is used to heat the workpiece; an air inlet pipe 42, one end of which is connected to the heating pipe 41, and the other end of which is connected to an external natural gas source (omitted in the figure). The natural gas enters the heating pipe 41 through the air inlet pipe 42 and heats the workpiece. The natural gas heats up quickly and has a high heating efficiency, which can reduce the heating time and improve the heating efficiency.

[0037] In this embodiment, the first electric heating unit 4 and the second electric heating unit 4 have the same structure and both include a fixed plate 43, one end of which is fixed to the inner wall of the quenching furnace body 1, and the fixed plate 43 has an installation space; a heating element 44, one end of which is arranged on the fixed plate 43, and the heating end of the heating element 44 is arranged toward the conveying unit 2, for heating the workpiece on the conveying unit 2.

[0038] In this embodiment, the heating element 44 is an electric heating wire, which is electrically connected to an external electric control component (omitted in the figure). The temperature in the furnace can be controlled by precisely controlling the current and voltage, thereby ensuring the stability and consistency of the heat treatment effect.

[0039] The use process and principle of the utility model are as follows: when in use, the workpiece is placed on the conveying roller 21, the quenching furnace is started, the conveying roller 21 is driven to rotate by the driving unit 3, and the workpiece is driven to enter the heating chamber 13. The workpiece passes through the first heating area and the second heating area in sequence. First, the workpiece is quickly heated by natural gas, and then the temperature in the furnace is maintained within a predetermined range by electric heating, completing natural gas heating and electric heating. The workpiece is kept warm or cooled as needed, and the workpiece is taken out of the furnace to complete the quenching treatment.

[0040] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0041] Any details not mentioned in the above specific embodiments of the present invention belong to the known technologies in the art and can be implemented with reference to the known technologies.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas-electric hybrid heating quenching furnace, comprising a quenching furnace body, a feed port arranged at a first end of the quenching furnace body, and a discharge port arranged at a second end of the quenching furnace body, wherein the interior of the quenching furnace body has a heating chamber, characterized in that: The heating chamber includes a first heating area and a second heating area, and further includes, A conveying unit, wherein the conveying unit is disposed in the heating chamber and is used to drive the workpiece to move along the heating chamber and sequentially pass through the first heating area and the second heating area; A driving unit, wherein an output end of the driving unit is connected to the conveying unit, and the driving unit is used to provide a driving force to drive the conveying unit to operate; A heating unit, which is used to heat the workpiece, comprises a first natural gas heating unit, a second natural gas heating unit, a first electric heating unit and a second electric heating unit, wherein the first natural gas heating unit and the second natural gas heating unit are located in a first heating area and are respectively arranged at the upper and lower ends of the conveying unit, and the first electric heating unit and the second electric heating unit are located in a second heating area and are respectively arranged at the upper and lower ends of the conveying unit.

2. The gas-electric hybrid heating quenching furnace according to claim 1, characterized in that: The feed inlet and the discharge outlet are both provided with curtains, which are used to improve the sealing of the heating chamber and thus reduce heat loss.

3. The gas-electric hybrid heating quenching furnace according to claim 1, characterized in that: The conveying unit comprises: Conveying rollers, the plurality of conveying rollers are rotatably arranged on the inner wall of the quenching furnace body, and the conveying rollers are used to convey the workpiece.

4. The gas-electric hybrid heating quenching furnace according to claim 1, characterized in that: The first natural gas heating unit and the second natural gas heating unit have the same structure and both include: A heating tube, wherein the heating tube is used to heat the workpiece; An air intake pipe, one end of which is connected to the heating pipe, and the other end of which is connected to an external natural gas source.

5. The gas-electric hybrid heating quenching furnace according to claim 1, characterized in that: The first electric heating unit and the second electric heating unit have the same structure and both include: A fixing plate, one end of which is fixed to the inner wall of the quenching furnace body, and the fixing plate has an installation space; A heating element, one end of which is arranged on the fixed plate, and the heating end of the heating element is arranged toward the conveying unit, and is used to heat the workpiece on the conveying unit.

6. The gas-electric hybrid heating quenching furnace according to claim 5, characterized in that: The heating element adopts electric heating wire.

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