Powder metallurgy carburizing furnace

Abstract

The utility model belongs to the technical field of carburizing furnaces, and particularly relates to a powder metallurgy carburizing furnace which comprises a heat preservation box and a gas recovery pipeline, a furnace body is arranged on the inner wall of the heat preservation box, a heating plate is arranged on the inner wall of the furnace body, a furnace cover is arranged on the top of the furnace body, a feeding pipe is arranged on the furnace cover, and the gas recovery pipeline is arranged on the gas recovery pipeline. According to the energy-saving carburizing furnace, when the carburizing furnace is used for machining powder metallurgy raw materials, heat in smoke in the carburizing furnace can be fully utilized conveniently, the heat preservation effect of the carburizing furnace is improved, loss of the heat in the carburizing furnace is reduced, and therefore the purpose of saving energy is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of carburizing furnaces, in particular to a powder metallurgy carburizing furnace. Background Art

[0002] Powder metallurgy is a process technology that prepares powder metallurgy raw materials or uses powder metallurgy raw materials or a mixture of powder metallurgy raw materials and non-powder metallurgy raw materials as raw materials, and manufactures metal materials, composite materials and various types of products through forming and sintering. Powder metallurgy is similar to the production of ceramics, both of which belong to powder sintering technology.

[0003] In the existing technology, when a carburizing furnace is used to carburize powder metallurgy raw materials, a large amount of high-temperature flue gas is generated during the processing of the powder metallurgy raw materials, which is generally discharged directly through an exhaust pipe, making it inconvenient to fully utilize the heat in the flue gas, resulting in a waste of heat energy. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing carburizing furnaces, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a powder metallurgy carburizing furnace, which can make full use of the heat in the flue gas in the carburizing furnace when using the carburizing furnace to process powder metallurgy raw materials, improve the thermal insulation effect of the carburizing furnace, reduce the heat loss in the carburizing furnace, and thus achieve the purpose of energy saving.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A powder metallurgy carburizing furnace comprises a heat preservation box and a gas recovery pipeline, wherein a furnace body is arranged on the inner wall of the heat preservation box, a heating plate is arranged on the inner wall of the furnace body, a furnace cover is arranged on the top of the furnace body, a feed pipe is arranged on the furnace cover, a motor is arranged on the top of the furnace cover, a stirring rod is arranged on the bottom of the furnace cover, one end of the stirring rod is connected to the rotating shaft of the motor, a plurality of stirring blades are arranged on the side wall of the stirring rod, the gas recovery pipeline is arranged on the furnace cover, an air inlet is arranged on the top of the heat preservation box, one end of the gas recovery pipeline is embedded and installed in the air inlet, a heat preservation cavity is arranged in the heat preservation box, an outer side wall of the heat preservation cavity is arranged with a heat insulation layer, and an exhaust pipe is arranged on the side wall of the heat preservation box.

[0009] As a preferred solution of the powder metallurgy carburizing furnace described in the utility model, a filter box is provided at one end of the exhaust pipe, an activated carbon filter plate is provided on the inner wall of the filter box, and a plurality of activated carbon filter plates are provided.

[0010] As a preferred solution of the powder metallurgy carburizing furnace described in the utility model, a discharge pipe is arranged at the bottom of the furnace body, and a control valve is arranged on the discharge pipe.

[0011] As a preferred solution of the powder metallurgy carburizing furnace described in the utility model, an exhaust valve is provided on the exhaust pipe.

[0012] As a preferred solution of the powder metallurgy carburizing furnace described in the utility model, wherein: a support frame is arranged at the bottom of the heat preservation box, and a rubber pad is arranged at the bottom of the support frame.

[0013] As a preferred solution of the powder metallurgy carburizing furnace described in the utility model, wherein: a control panel is provided on the front side wall of the heat preservation box, and the control panel is electrically connected to the heating plate.

[0014] As a preferred solution of the powder metallurgy carburizing furnace described in the utility model, one end of the gas recovery pipeline is connected to the heat preservation chamber through an air inlet.

[0015] Compared with the prior art: In the present application document, 1. the heating plate is used to heat the powder metallurgical raw materials in the furnace body, the feeding pipe is used to transport the powder metallurgical raw materials into the furnace body, the motor is used to drive the stirring rod to rotate, thereby driving the stirring blade to rotate, and the stirring blade is used to mix the powder metallurgical raw materials in the furnace body evenly, thereby improving the carburizing efficiency of the powder. The powder metallurgical raw materials will generate a large amount of high-temperature flue gas during the heating process. The high-temperature flue gas in the furnace body is introduced into the insulation box through the gas recovery pipeline, and the outer wall of the furnace body is continuously heated and insulated through the insulation cavity to avoid the loss of heat energy from the outer wall of the furnace body. The heat insulation layer is convenient for improving the heat retention effect in the insulation box. The high-temperature flue gas flows through the entire insulation chamber and is discharged through the exhaust pipe, which is convenient for the high-temperature flue gas to continuously enter the insulation chamber, so that the insulation effect of the insulation chamber is better. Therefore, when using the carburizing furnace to process powder metallurgy raw materials, it is convenient to make full use of the heat in the flue gas in the carburizing furnace, improve the insulation effect of the carburizing furnace, and reduce the heat loss in the carburizing furnace, so as to achieve the purpose of energy saving. 2. The filter box is convenient for filtering the exhausted flue gas, and several layers of activated carbon filter plates are used to adsorb harmful substances in the flue gas, thereby improving the filtering effect of the flue gas and facilitating emissions to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 This is a schematic diagram of the structure of a powder metallurgy carburizing furnace of the utility model;

[0018] Figure 2 This is a structural explosion diagram of a powder metallurgy carburizing furnace of the utility model;

[0019] Figure 3 This is a structural cross-sectional view of a powder metallurgy carburizing furnace of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of a filter box of a powder metallurgy carburizing furnace.

[0021] In the figure: 100 insulation box, 110 furnace body, 120 heating plate, 130 furnace cover, 140 feeding pipe, 150 motor, 160 stirring rod, 170 stirring blade, 200 gas recovery pipeline, 210 air inlet, 220 insulation chamber, 230 insulation layer, 240 exhaust pipe, 300 filter box, 310 activated carbon filter plate. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The utility model provides a powder metallurgy carburizing furnace, please refer to Figure 1-Figure 4 , including an insulation box 100 and a gas recovery pipeline 200, the inner wall of the insulation box 100 is connected to a furnace body 110, the inner wall of the furnace body 110 is embedded with a heating plate 120, the top of the furnace body 110 is connected to a furnace cover 130, a feed pipe 140 is embedded on the furnace cover 130, a motor 150 is fixedly installed on the top of the furnace cover 130, and a stirring rod 160 is connected to the bottom of the furnace cover 130, one end of the stirring rod 160 is connected to the rotating shaft of the motor 150, and the stirring rod 160 is connected to the rotating shaft of the motor 150. A plurality of stirring blades 170 are fixedly mounted on the side wall of the mixing rod 160, a gas recovery pipe 200 is embedded and mounted on the furnace cover 130, an air inlet hole 210 is opened on the top of the heat preservation box 100, one end of the gas recovery pipe 200 is plugged into the air inlet hole 210, a heat preservation chamber 220 is formed in the heat preservation box 100, an outer wall of the heat preservation chamber 220 is connected to a heat insulation layer 230, and a side wall of the heat preservation box 100 is connected to an exhaust pipe 240. Specifically, through the heating plate 1 20 is convenient for heating the powder metallurgical raw materials in the furnace body 110. The powder metallurgical raw materials are conveniently transported into the furnace body 110 through the feed pipe 140. The motor 150 is convenient for driving the stirring rod 160 to rotate, thereby driving the stirring blade 170 to rotate. The stirring blade 170 is convenient for mixing the powder metallurgical raw materials in the furnace body 110 evenly to improve the carburizing efficiency of the powder. A large amount of high-temperature flue gas will be generated in the process of heating the powder metallurgical raw materials. The high-temperature flue gas in the furnace body 110 is continuously introduced into the insulation box 100 through the gas recovery pipeline 200. The outer wall of the furnace body 110 is conveniently heated and insulated through the insulation chamber 220 to avoid the loss of heat energy from the outer wall of the furnace body 110. The heat insulation layer 230 is convenient for improving the heat retention effect in the insulation box 100. The high-temperature flue gas flows through the entire insulation chamber 220 and is discharged through the exhaust pipe 240, so that the high-temperature flue gas continues to enter the insulation chamber 220, and the insulation effect is good.

[0027] A discharge pipe is provided at the bottom of the furnace body 110 , and a control valve is provided on the discharge pipe. Specifically, the discharge pipe is operated by the control valve, and the processed powder metallurgy raw materials are conveniently discharged through the discharge pipe.

[0028] The exhaust pipe 240 is provided with an exhaust valve. Specifically, the exhaust valve is used to adjust the exhaust volume in the exhaust pipe 240 for easy control.

[0029] A support frame is provided at the bottom of the thermal insulation box 100, and a rubber pad is provided at the bottom of the support frame. Specifically, the support frame is used to facilitate the support and positioning of the bottom of the thermal insulation box 100, and the rubber pad is used to facilitate increasing the anti-slip property of the support frame.

[0030] A control panel is disposed on the front side wall of the heat preservation box 100 , and the control panel is electrically connected to the heating plate 120 . Specifically, the heating plate 120 is conveniently operated through the control panel, so that the heat can be conveniently controlled.

[0031] One end of the gas recovery pipe 200 is connected to the heat preservation chamber 220 through the air inlet 210, which is convenient for conveying high-temperature flue gas into the heat preservation chamber 220 to facilitate heat utilization.

[0032] Combination Figure 1-Figure 4 The specific use process of a powder metallurgy carburizing furnace of this embodiment is as follows: when using the carburizing furnace to carburize the powder metallurgy raw material, the powder metallurgy raw material is transported into the furnace body 110 through the feed pipe 140, and the powder metallurgy raw material in the furnace body 110 is heated by the heating plate 120. The motor 150 is used to drive the stirring rod 160 to rotate, thereby driving the stirring blade 170 to rotate, and the powder metallurgy raw material in the furnace body 110 is mixed evenly by the stirring blade 170 to improve the carburizing efficiency of the powder. During the heating process, the powder metallurgy raw material will produce A large amount of high-temperature flue gas is introduced into the insulation box 100 through the gas recovery pipe 200 to heat and insulate the outer wall of the furnace body 110 continuously, thereby avoiding the loss of heat energy from the outer wall of the furnace body 110. The heat insulation layer 230 is used to improve the heat retention effect in the insulation box 100. After the high-temperature flue gas flows through the entire insulation chamber 220, it is discharged through the exhaust pipe 240, thereby facilitating the high-temperature flue gas to continuously enter the insulation chamber 220, thereby achieving good insulation effect, making full use of the heat in the high-temperature flue gas, improving the insulation effect of the carburizing furnace, and achieving the purpose of energy saving.

[0033] Figure 3-Figure 4 The structure diagram of the second embodiment of the powder metallurgy carburizing furnace of the utility model is shown. Figure 3-Figure 4 Different from the above-mentioned embodiment, a filter box 300 is provided at one end of the exhaust pipe 240, and an activated carbon filter plate 310 is provided on the inner wall of the filter box 300. There are several activated carbon filter plates 310. Specifically, the filter box 300 is used to filter the exhausted flue gas, and several activated carbon filter plates 310 are used to adsorb harmful substances in the flue gas, thereby improving the filtering effect of the flue gas and facilitating the emission to the surrounding environment.

[0034] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A powder metallurgy carburizing furnace, characterized in that: The invention comprises a heat preservation box (100) and a gas recovery pipeline (200), wherein the inner wall of the heat preservation box (100) is provided with a furnace body (110), the inner wall of the furnace body (110) is provided with a heating plate (120), the top of the furnace body (110) is provided with a furnace cover (130), a feed pipe (140) is provided on the furnace cover (130), a motor (150) is provided on the top of the furnace cover (130), a stirring rod (160) is provided at the bottom of the furnace cover (130), one end of the stirring rod (160) is connected to the rotating shaft of the motor (150), and the stirring rod (160) is connected to the rotating shaft of the motor (150). The heat preservation box (100) is connected to a heat preservation box (100) and a heat preservation box (100). The heat preservation box (100) is connected to a heat preservation box (100) and a heat preservation box (200). The heat preservation box (100) is connected to a heat preservation box (100) and a heat preservation box (200). The heat preservation box (100) is connected to a heat preservation box (100) and a heat preservation box (200). The side wall of the heat preservation box (100) is provided with a plurality of stirring blades (170). The gas recovery pipe (200) is arranged on the furnace cover (130). The top of the heat preservation box (100) is provided with an air inlet hole (210). One end of the gas recovery pipe (200) is embedded and installed in the air inlet hole (210). The heat preservation box (100) is provided with a heat preservation chamber (220). The outer side wall of the heat preservation chamber (220) is provided with a heat insulation layer (230). The side wall of the heat preservation box (100) is provided with an exhaust pipe (240).

2. A powder metallurgy carburizing furnace according to claim 1, characterized in that: A filter box (300) is provided at one end of the exhaust pipe (240), and an activated carbon filter plate (310) is provided on the inner wall of the filter box (300), wherein a plurality of activated carbon filter plates (310) are provided.

3. A powder metallurgy carburizing furnace according to claim 1, characterized in that: A discharge pipe is provided at the bottom of the furnace body (110), and a control valve is provided on the discharge pipe.

4. A powder metallurgy carburizing furnace according to claim 1, characterized in that: The exhaust pipe (240) is provided with an exhaust valve.

5. A powder metallurgy carburizing furnace according to claim 1, characterized in that: A support frame is provided at the bottom of the heat preservation box (100), and a rubber pad is provided at the bottom of the support frame.

6. A powder metallurgy carburizing furnace according to claim 1, characterized in that: The front side wall of the thermal insulation box (100) is provided with a control panel, and the control panel is electrically connected to the heating plate (120).

7. A powder metallurgy carburizing furnace according to claim 1, characterized in that: One end of the gas recovery pipeline (200) is connected to the heat preservation chamber (220) via the air inlet hole (210).

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