Efficient and energy-saving preheating device for vacuum brazing furnace

Abstract

The utility model discloses a high-efficiency and energy-saving preheating device for a vacuum brazing furnace, which belongs to the technical field of vacuum brazing furnaces, aims at solving the problems that the preheating efficiency is lower and the preheating work in a hearth cannot be quickly realized, and comprises a vacuum brazing furnace machine body, a vacuum unit and supporting legs, and the supporting legs are fixedly arranged at the bottom of the vacuum brazing furnace machine body; the vacuum unit is arranged on the right side of the vacuum brazing furnace body, the hearth is arranged on the upper portion of the vacuum brazing furnace body and connected with the vacuum unit, the bottom of the hearth is fixedly connected with a mounting plate and fixedly mounted on the top of the vacuum brazing furnace body through the mounting plate, and a preheating mechanism is arranged on the hearth and used for preheating machining. The preheating mechanism is arranged on the hearth, the interior of the hearth can be preheated according to the machining process, the preheating uniformity of the preheating mechanism is high, the preheating work can be rapidly achieved, the preheating mechanism is matched with hearth machining operation, and then the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum brazing furnaces, and particularly relates to a high-efficiency and energy-saving preheating device for vacuum brazing furnaces. Background Art

[0002] Vacuum brazing furnace is a kind of equipment used for metal brazing and bright heat treatment. It is suitable for batch production of small and medium-sized stainless steel parts, such as bright quenching and tempering of martensitic stainless steel, and bright annealing of austenitic stainless steel.

[0003] The prior art patent announcement number CN219913985U is a vacuum furnace preheating zone heating and air supply device. The above patent includes a heating and air supply cavity arranged between the vacuum furnace preheating zone liner and the vacuum furnace shell. The lower end of the heating and air supply cavity is provided with an air supply hole connected to the vacuum furnace preheating zone liner. The heating and air supply cavity on one side or both sides of the air supply hole is provided with an electric heater penetrated by the vacuum furnace shell. A sealing mounting seat is provided on the outer end of the vacuum furnace shell. A water cooling channel is provided in the sealing mounting seat. An air supply motor is provided on the sealing mounting seat. The air supply motor output shaft passes through the sealing mounting seat, The outer shell of the vacuum furnace penetrates into the heating air supply cavity to receive the air supply impeller, and the air supply impeller is arranged correspondingly toward the electric heater and the air supply hole. The device has a simple and compact structure, can conveniently supply hot air, take into account the supply of nitrogen and the stable support installation against thermal deformation, but there are still the following deficiencies in actual use: From a practical point of view, when the device preheats the furnace, since it preheats through the heating air cavity in conjunction with the electric heater, the hot air flow direction and speed are certain, resulting in its low preheating efficiency, and the inability to quickly realize the preheating work inside the furnace, thereby reducing the work efficiency.

[0004] Therefore, a high-efficiency and energy-saving vacuum brazing furnace preheating device is needed to solve the problem of low preheating efficiency and inability to quickly preheat the furnace chamber in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a high-efficiency and energy-saving preheating device for a vacuum brazing furnace to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency and energy-saving vacuum brazing furnace preheating device, comprising a vacuum brazing furnace body, a vacuum unit and support legs, wherein the support legs are fixedly mounted on the bottom of the vacuum brazing furnace body, the vacuum unit is arranged on the right side of the vacuum brazing furnace body, a furnace chamber is provided on the upper part of the vacuum brazing furnace body and is connected to the vacuum unit, a mounting plate is fixedly connected to the bottom of the furnace chamber and is fixedly mounted on the top of the vacuum brazing furnace body through the mounting plate, and a preheating mechanism is provided on the furnace chamber for performing preheating processing.

[0007] The preheating mechanism includes a preheating control panel, which is fixedly installed on the left side surface of the furnace. A connecting wire is connected to the preheating control panel, and an electric heating tube is connected to the end of the connecting wire. The electric heating tube is provided with a matching preheating cavity in the furnace wall, and the preheating cavity is fixedly connected to a heat conducting plate on the inner surface of the furnace.

[0008] It should be noted in the solution that the furnace is made of stainless steel metal material, ceramic fiber material or molybdenum foil metal material, and a temperature sensor is also provided inside the furnace for real-time monitoring of the temperature inside the furnace and feeding back the temperature signal to the preheating control panel.

[0009] It is further worth mentioning that the preheating control panel is provided with a temperature display screen and a temperature adjustment knob for real-time display and adjustment of the preheating temperature.

[0010] It should be further explained that the electric heating tubes are arranged in a spiral structure and are evenly distributed in the preheating chamber.

[0011] As a preferred embodiment, the heat conducting plate is made of a high temperature resistant alloy material.

[0012] As a preferred embodiment, the vacuum brazing furnace body is further provided with a safety valve and an emergency stop button to ensure safe operation of the equipment in an emergency.

[0013] Compared with the prior art, the present invention provides a high-efficiency and energy-saving vacuum brazing furnace preheating device, which has at least the following beneficial effects:

[0014] (1) Through the preheating mechanism set on the furnace, the interior of the furnace can be preheated according to the processing process, and its preheating uniformity is high, and the preheating work can be quickly realized, cooperating with the furnace processing operation, thereby improving the processing efficiency. Through the coordinated work of the preheating mechanism, electric heating tube, temperature sensor and vacuum unit and other components, accurate preheating and temperature control of the interior of the furnace are achieved, providing a good temperature environment and welding quality guarantee for the subsequent brazing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model from a first perspective;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model from a second perspective;

[0017] Figure 3 This is a schematic diagram of the internal structure of the furnace of the present invention;

[0018] Figure 4 This is a schematic diagram of the furnace cutaway structure of the present invention.

[0019] In the figure: 1. Vacuum brazing furnace body; 101. Furnace; 102. Mounting plate; 2. Vacuum unit; 3. Support legs; 4. Preheating mechanism; 401. Preheating control panel; 402. Connecting wire; 403. Electric heating tube; 404. Preheating chamber; 405. Heat conduction plate. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal connections between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] See also Figure 1-4 The utility model provides a high-efficiency and energy-saving vacuum brazing furnace preheating device, including a vacuum brazing furnace body 1, a vacuum unit 2 and a support leg 3. The support leg 3 is fixedly installed at the bottom of the vacuum brazing furnace body 1, and the vacuum unit 2 is arranged on the right side of the vacuum brazing furnace body 1. A furnace 101 is provided on the upper part of the vacuum brazing furnace body 1 and is connected to the vacuum unit 2. A mounting plate 102 is fixedly connected to the bottom of the furnace 101 and is fixedly installed on the top of the vacuum brazing furnace body 1 through the mounting plate 102. A preheating mechanism 4 is provided on the furnace 101 for preheating processing.

[0025] Further as Figure 2 、 Figure 3 and Figure 4 As shown, the preheating mechanism 4 includes a preheating control panel 401, which is fixedly installed on the left surface of the furnace 101. A connecting line 402 is connected to the preheating control panel 401, and an electric heating tube 403 is connected to the end of the connecting line 402. The electric heating tube 403 is provided with a matching preheating cavity 404 in the wall of the furnace 101, and the preheating cavity 404 is fixedly connected to the inner surface of the furnace 101 with a heat conducting plate 405.

[0026] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that the furnace 101 is made of stainless steel metal material, ceramic fiber material or molybdenum foil metal material, and a temperature sensor is also provided inside the furnace 101 for real-time monitoring of the internal temperature of the furnace 101 and feeding back the temperature signal to the preheating control panel 401.

[0027] Further as Figure 2 、 Figure 3 and Figure 4 As shown, it is worth noting that the preheating control panel 401 is provided with a temperature display screen and a temperature adjustment knob for real-time display and adjustment of the preheating temperature.

[0028] Further as Figure 2 、 Figure 3 and Figure 4 As shown, it is worth noting that the electric heating tube 403 is arranged in a spiral structure and is evenly distributed in the preheating chamber 404 to improve the preheating efficiency and uniformity.

[0029] Further as Figure 2 、 Figure 3 and Figure 4 As shown, it is worth mentioning that the heat conducting plate 405 is made of a high temperature resistant alloy material and has good thermal conductivity and mechanical strength.

[0030] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that a safety valve and an emergency stop button are also provided on the vacuum brazing furnace body 1 to ensure safe operation of the equipment in an emergency.

[0031] This solution has the following working process: when this device is used, the operator sets the required preheating temperature through the temperature display screen and temperature adjustment knob on the preheating control panel 401. After the preheating control panel 401 receives the setting signal, it sends a heating instruction to the electric heating tube 403 through the connecting line 402. After the electric heating tube 403 receives the heating instruction, it starts to energize and heat. The electric heating tube 403 has a spiral structure and is evenly distributed in the preheating chamber 404 to ensure preheating efficiency and uniformity. The heat generated by the electric heating tube 403 is transferred to the heat conducting plate 405 through the preheating chamber 404, and the heat conducting plate 405 then evenly transfers the heat to the inside of the furnace 101. The temperature sensor set inside the furnace 101 monitors the internal temperature of the furnace 101 in real time and The temperature signal is fed back to the preheating control panel 401. The preheating control panel 401 compares the fed-back temperature signal with the set temperature and adjusts the heating power of the electric heating tube 403 to achieve precise control of the temperature inside the furnace 101. During the preheating process, the vacuum unit 2 continues to operate to maintain the vacuum state in the furnace 101. The vacuum unit 2 extracts the gas in the furnace 101 to prevent the material from reacting with oxygen at high temperature and causing oxidation. When the temperature inside the furnace 101 reaches the set value, the preheating control panel 401 sends a preheating completion signal. The operator performs subsequent brazing operations based on the signal. During the brazing process, the preheating device can continue to provide heat as needed to ensure the stability and reliability of the brazing process.

[0032] In summary: by setting the preheating mechanism 4 on the furnace 101, the interior of the furnace 101 can be preheated according to the processing process, and its preheating uniformity is high, and the preheating work can be quickly realized, cooperating with the processing operation of the furnace 101, thereby improving the processing efficiency. Through the coordinated work of components such as the preheating mechanism 4, the electric heating tube 403, the temperature sensor and the vacuum unit 2, accurate preheating and temperature control of the interior of the furnace 101 are achieved, providing a good temperature environment and welding quality assurance for the subsequent brazing process.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency and energy-saving vacuum brazing furnace preheating device, comprising a vacuum brazing furnace body (1), a vacuum unit (2) and a support leg (3), characterized in that: The support legs (3) are fixedly mounted on the bottom of the vacuum brazing furnace body (1); the vacuum unit (2) is arranged on the right side of the vacuum brazing furnace body (1); a furnace (101) is arranged on the upper part of the vacuum brazing furnace body (1) and is connected to the vacuum unit (2); a mounting plate (102) is fixedly connected to the bottom of the furnace (101) and is fixedly mounted on the top of the vacuum brazing furnace body (1) through the mounting plate; a preheating mechanism (4) is arranged on the furnace (101) for performing preheating processing; The preheating mechanism (4) comprises a preheating control panel (401), the preheating control panel (401) being fixedly mounted on the left side surface of the furnace (101), the preheating control panel (401) being connected to a connecting line (402), the end of the connecting line (402) being connected to an electric heating pipe (403), the electric heating pipe (403) being provided with a matching preheating cavity (404) corresponding to the wall of the furnace (101), and the preheating cavity (404) being fixedly connected to a heat conducting plate (405) corresponding to the inner surface of the furnace (101).

2. The high-efficiency and energy-saving vacuum brazing furnace preheating device according to claim 1, characterized in that: The furnace (101) is made of stainless steel metal material, ceramic fiber material or molybdenum foil metal material. A temperature sensor is also provided inside the furnace (101) for real-time monitoring of the internal temperature of the furnace (101) and feeding back the temperature signal to the preheating control panel (401).

3. The high-efficiency and energy-saving vacuum brazing furnace preheating device according to claim 2, characterized in that: The preheating control panel (401) is provided with a temperature display screen and a temperature adjustment knob for real-time display and adjustment of the preheating temperature.

4. The high-efficiency and energy-saving vacuum brazing furnace preheating device according to claim 3, characterized in that: The electric heating tubes (403) are arranged in a spiral structure and are evenly distributed in the preheating chamber (404).

5. The high-efficiency and energy-saving vacuum brazing furnace preheating device according to claim 4, characterized in that: The heat conducting plate (405) is made of a high-temperature resistant alloy material.

6. The high-efficiency and energy-saving vacuum brazing furnace preheating device according to claim 5, characterized in that: The vacuum brazing furnace body (1) is also provided with a safety valve and an emergency stop button for ensuring safe operation of the equipment in an emergency.

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