Energy-saving powder metallurgy continuous sintering furnace

Abstract

The utility model relates to the technical field of powder metallurgy continuous sintering furnaces, and discloses an energy-saving powder metallurgy continuous sintering furnace which comprises a sintering furnace body. The filter box and the treatment box are located above the sintering furnace, and the treatment box is located on the right side of the filter box; the supporting rods are fixedly connected to the bottom faces of the filter box and the treatment box respectively, the bottom end faces of the supporting rods are fixedly connected with the top face of the sintering furnace, and a filter assembly is arranged in the filter box; and a preheating assembly is arranged in the treatment box, and the filtering assembly comprises a filtering net plate fixedly connected to the inner side face of the filtering box. Dust and impurities in flue gas are filtered through the filter assembly and the filter screen plate, pollution of the dust and the impurities in the flue gas to the environment is avoided, meanwhile, the filter screen plate is cleaned through lifting of the cleaning brush, the dust and the impurities accumulated on the filter screen plate are effectively cleaned, the maintenance efficiency of equipment is improved, and the service life of the equipment is prolonged. The continuous and stable filtering effect is also ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous sintering furnaces for powder metallurgy, specifically an energy-saving continuous sintering furnace for powder metallurgy. Background Technology

[0002] A continuous sintering furnace for powder metallurgy is a heat treatment device specifically designed for sintering powder metallurgy products. It is widely used in aerospace, automotive manufacturing, electronics, medical devices, and other fields. Its working principle involves pressing metallic or non-metallic powders into shape and then sintering them at high temperatures. This process causes diffusion and bonding between powder particles, ultimately forming a dense material or part.

[0003] According to a Chinese patent publication (CN211041855U), a sintering furnace for powder metallurgy includes a furnace body and a frame. The bottom of the inner wall of the furnace body is fixedly connected to the bottom of the inner wall of the frame. An adsorption box is fixedly connected to the top of the furnace body, and activated carbon adsorption plates are fixedly connected between the top and bottom sides of the inner wall of the adsorption box. An ultraviolet germicidal lamp is fixedly connected to the top of the inner wall of the adsorption box. A fan is fixedly connected to the right side of the top of the furnace body, located on the right side of the adsorption box, and the air outlet of the fan is connected to an exhaust pipe. This utility model relates to the field of powder metallurgy technology. This sintering furnace for powder metallurgy, with an adsorption box fixedly connected to the top of the furnace body and activated carbon adsorption plates fixedly connected between the top and bottom sides of the inner wall of the adsorption box, can purify the exhaust gas before discharge, preventing adverse effects on the external air and protecting the environment. It also facilitates the disassembly and cleaning of the filter screen.

[0004] However, existing equipment still has the following problems: the flue gas emitted from the furnace contains heat, and direct emission of the purified flue gas easily leads to energy waste. Therefore, an energy-saving continuous sintering furnace for powder metallurgy is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an energy-saving continuous sintering furnace for powder metallurgy to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving continuous sintering furnace for powder metallurgy, comprising a sintering furnace;

[0007] The filter box and the processing box are located above the sintering furnace, with the processing box located to the right of the filter box;

[0008] And support rods fixedly connected to the bottom surfaces of the filter box and the processing box respectively, with the bottom end of the support rods fixedly connected to the top surface of the sintering furnace; the filter box is equipped with a filter assembly.

[0009] The processing box is equipped with a preheating component.

[0010] Preferably, the filter assembly includes a filter screen plate fixedly connected to the inner side of the filter box. A reciprocating threaded rod, a slider, a cleaning brush, and an exhaust pipe are arranged on the left side of the filter screen plate. The bottom surface of the left end of the exhaust pipe is fixedly connected through the left inner side of the filter box and the top surface of the sintering furnace, extending into the sintering furnace. The bottom end of the reciprocating threaded rod is threaded through the top surface of the slider, extending below the slider. The bottom end of the reciprocating threaded rod is rotatably connected to the bottom surface of the filter box via a bearing seat. The right side of the slider is fixedly connected to the left side of the cleaning brush. The right end of the cleaning brush is slidably connected to the left side of the filter screen plate. The top end of the reciprocating threaded rod extends through the top surface of the filter box to the top of the filter box. The surface is rotatably connected to the inner wall of the filter box via a bearing seat. A second gear is fixedly sleeved on the surface of the reciprocating threaded rod. A support plate is provided on the top surface of the filter box. The bottom surface of the support plate is fixedly connected to the top surface of the filter box and the top surface of the processing box. A motor is fixedly connected to the top surface of the support plate. A first gear is fixedly sleeved on the surface of the motor output rod. The side of the first gear meshes with the side of the second gear. A vent pipe is provided on the right side of the filter box. The left end of the vent pipe is fixedly inserted through the right side of the filter box and extends into the interior of the filter box. The right end of the vent pipe is fixedly inserted through the left side of the processing box and extends into the interior of the processing box. The processing box and the filter box are made of heat-insulating material, and the preheating tank is made of heat-conducting material.

[0011] Preferably, the preheating assembly includes a preheating tank located inside the processing chamber. A rotating rod and a stirring plate are installed inside the preheating tank. The top surface of the rotating rod extends through the top surface of the preheating tank and the top surface of the processing chamber to the top of the processing chamber. The surface of the rotating rod is rotatably connected to the inner side of the preheating tank and the inner side of the processing chamber via bearing seats. The surface of the rotating rod is fixedly connected to the end face of the stirring plate. An exhaust pipe is installed inside the preheating tank. The right end face of the exhaust pipe is fixedly extended through the top surface of the processing chamber to the top of the processing chamber. A first valve is installed inside the exhaust pipe. An adding pipe is installed above the processing chamber. The bottom end face of the adding pipe is fixedly extended through the top surface of the processing chamber and the top surface of the preheating tank to the inside of the preheating tank. A discharge pipe is installed inside the preheating tank. The bottom end face of the discharge pipe is fixedly extended through the bottom surface of the preheating tank, the processing chamber, and the top surface of the sintering furnace to the inside of the sintering furnace. A third gear is fixedly sleeved on the surface of the rotating rod, and the side of the third gear meshes with the side of the first gear.

[0012] Preferably, a baffle is fixedly hinged to the front of the filter box. The baffle is located on the left front of the filter screen, and the dust and impurities cleaned off the filter screen can be removed from the filter box using the baffle.

[0013] Preferably, a gas collecting hood is fixedly connected to the left end face of the vent pipe to facilitate the entry of filtered gas into the vent pipe.

[0014] Preferably, the discharge pipe is inclined and a second valve is provided inside the discharge pipe. The inclined discharge pipe facilitates the discharge of powder particles from the preheating tank into the sintering furnace.

[0015] Preferably, the preheating tank is fixedly connected to both the upper and lower surfaces with connecting columns, the end faces of which are fixedly connected to the inner side of the processing box, and the connecting columns provide support for the preheating tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This energy-saving powder metallurgy continuous sintering furnace, by setting up a filter assembly, filters the dust and impurities in the flue gas through the filter screen, avoiding the pollution of the environment by the dust and impurities in the flue gas. At the same time, the filter screen is cleaned by the lifting and lowering of the cleaning brush, effectively cleaning the dust and impurities accumulated on the filter screen, which not only improves the maintenance efficiency of the equipment, but also ensures the continuous and stable filtration effect.

[0018] 2. This energy-saving continuous sintering furnace for powder metallurgy uses a preheating component to transfer heat from the flue gas into the processing box and preheating tank, raising the temperature inside the preheating tank to preheat the powder particles about to enter the sintering furnace. This reduces energy waste and achieves effective recovery and utilization of the flue gas emitted from the sintering furnace, improving the energy-saving effect of the continuous sintering furnace. At the same time, the rotating stirring plate stirs and mixes the powder particles inside the preheating tank, achieving uniform mixing and heating of the powder particles, which helps to improve the uniformity of the sintering process and product quality. Attached Figure Description

[0019] Figure 1 This is a front sectional perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the overall main view of this utility model;

[0021] Figure 3 This is a partial frontal sectional perspective view of the present invention;

[0022] Figure 4 This is a perspective view of the cleaning brush of this utility model;

[0023] Figure 5 This is a perspective view of the preheating tank of this utility model.

[0024] In the diagram: sintering furnace 1, filter box 2, processing box 3, support rod 4, filter assembly 50, support plate 501, motor 502, first gear 503, reciprocating threaded rod 504, second gear 505, slider 506, cleaning brush 507, filter screen 508, baffle 509, exhaust pipe 5010, vent pipe 5011, gas collection hood 5012, preheating assembly 51, preheating tank 511, connecting column 512, rotating rod 513, stirring plate 514, adding pipe 515, discharge pipe 516, exhaust pipe 517, third gear 518. Detailed Implementation

[0025] 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.

[0026] Example 1: Please refer to Figure 1 - Figure 4 This utility model provides a technical solution: an energy-saving powder metallurgy continuous sintering furnace, including a sintering furnace 1;

[0027] The filter box 2 and the processing box 3 are located above the sintering furnace 1, with the processing box 3 located to the right of the filter box 2;

[0028] And support rods 4 are fixedly connected to the bottom surfaces of filter box 2 and processing box 3 respectively. The bottom end of support rod 4 is fixedly connected to the top surface of sintering furnace 1. Filter assembly 50 is provided inside filter box 2.

[0029] The processing box 3 is equipped with a preheating component 51.

[0030] The filter assembly 50 includes a filter screen plate 508 fixedly connected to the inner side of the filter box 2. A reciprocating threaded rod 504, a slider 506, a cleaning brush 507, and an exhaust pipe 5010 are arranged on the left side of the filter screen plate 508. The bottom surface of the left end of the exhaust pipe 5010 is fixedly inserted through the inner left side of the filter box 2 and the top surface of the sintering furnace 1, extending into the interior of the sintering furnace 1. The bottom end of the reciprocating threaded rod 504 is threaded through the top surface of the slider 506, extending below the slider 506. The bottom end of the reciprocating threaded rod 504 is connected to a bearing seat. The slider 506 is rotatably connected to the bottom surface inside the filter box 2. The right side of the slider 506 is fixedly connected to the left side of the cleaning brush 507. The right end face of the cleaning brush 507 is slidably connected to the left side of the filter screen 508. The top surface of the reciprocating threaded rod 504 extends through the top surface inside the filter box 2 to the top of the filter box 2. The surface of the reciprocating threaded rod 504 is rotatably connected to the inner wall of the filter box 2 through a bearing seat. A second gear 505 is fixedly sleeved on the surface of the reciprocating threaded rod 504. A support plate 501 is provided on the top surface of the filter box 2. The bottom surface of the support plate 501 is fixedly connected to the top surface of the filter box 2 and the top surface of the processing box 3. The top surface of the support plate 501 is fixedly connected to the motor 502. The output rod surface of the motor 502 is fixedly fitted with the first gear 503. The side of the first gear 503 meshes with the side of the second gear 505. The right side of the filter box 2 is provided with a vent pipe 5011. The left end of the vent pipe 5011 is fixedly inserted through the right side of the filter box 2 and extends into the interior of the filter box 2. The right end of the vent pipe 5011 is fixedly inserted through the left side of the processing box 3 and extends into the interior of the processing box 3. The processing box 3 and the filter box 2 are made of heat-insulating material. The preheating tank 511 is made of heat-conducting material. By setting the filter assembly 50, the filter screen 508 filters the dust and impurities in the flue gas, avoiding the dust and impurities in the flue gas from polluting the environment. At the same time, the filter screen 508 is cleaned by the lifting and lowering of the cleaning brush 507, effectively cleaning the dust and impurities accumulated on the filter screen 508. This not only improves the maintenance efficiency of the equipment, but also ensures the continuous and stable filtration effect.

[0031] A baffle 509 is fixedly hinged to the front of the filter box 2. The baffle 509 is located on the left front of the filter screen 508.

[0032] A gas collection hood 5012 is fixedly connected to the left end of the vent pipe 5011.

[0033] Example 2: Based on Example 1, a preferred embodiment of the energy-saving continuous sintering furnace for powder metallurgy provided by this utility model is as follows: Figure 1 - Figure 5As shown: The preheating assembly 51 includes a preheating tank 511 located inside the processing chamber 3. A rotating rod 513 and a stirring plate 514 are installed inside the preheating tank 511. The top surface of the rotating rod 513 extends through the top surface inside the preheating tank 511 and the top surface inside the processing chamber 3, reaching the top of the processing chamber 3. The surface of the rotating rod 513 is rotatably connected to the inner side of the preheating tank 511 and the inner side of the processing chamber 3 via bearing seats. The surface of the rotating rod 513 is fixedly connected to the end face of the stirring plate 514. An exhaust pipe 517 is installed inside the preheating tank 511. The right end face of the exhaust pipe 517 is fixedly extended through the top surface inside the processing chamber 3, reaching the top of the processing chamber 3. A first valve is installed inside the exhaust pipe 517. An adding pipe 515 is installed above the processing chamber 3. The bottom end face of the adding pipe 515 is fixedly extended through the top surface of the processing chamber 3 and the top surface of the preheating tank 511, reaching the interior of the preheating tank 511. The preheating furnace 1 is equipped with a discharge pipe 516. The bottom end of the discharge pipe 516 is fixedly inserted through the bottom surface of the preheating tank 511, the processing box 3, and the top surface of the sintering furnace 1, extending into the sintering furnace 1. A third gear 518 is fixedly sleeved on the surface of the rotating rod 513. The side of the third gear 518 meshes with the side of the first gear 503. Through the preheating component 51, the heat in the flue gas is introduced into the processing box 3 and the preheating tank 511, raising the temperature inside the preheating tank 511. This is used to preheat the powder particles that are about to enter the sintering furnace 1, thereby reducing energy waste and realizing the effective recovery and utilization of the flue gas emitted from the sintering furnace. This improves the energy-saving effect of the continuous powder metallurgy sintering furnace. At the same time, the powder particles inside the preheating tank 511 are stirred and mixed by the rotation of the stirring plate 514, achieving uniform mixing and heating of the powder particles, which helps to improve the uniformity of the sintering process and the product quality.

[0034] The discharge pipe 516 is inclined, and a second valve is installed inside the discharge pipe 516.

[0035] The preheating tank 511 is fixedly connected to both the top and bottom surfaces with connecting columns 512, and the end face of the connecting column 512 is fixedly connected to the inner side of the processing box 3.

[0036] In operation, the flue gas from the sintering furnace 1 is discharged into the filter box 2 through the tail gas pipe 5010. The filter screen 508 filters the flue gas, and impurities and dust in the flue gas remain in the filter box 2. The filtered flue gas enters the processing box 3 through the gas collection hood 5012 and the ventilation pipe 5011. The pressed powder particles are added into the preheating tank 511 through the addition pipe 515. The heat in the flue gas increases the temperature inside the processing box 3, thereby increasing the temperature in the preheating tank 511, and thus preheating the pressed powder particles in the preheating tank 511. The motor 502 is turned on, and the output rod of the motor 502 drives the first gear 503 to rotate. Through the meshing of the first gear 503 and the second gear 505, the reciprocating threaded rod 504 is driven. The rotating and reciprocating threaded rod 504 drives the slider 506 and cleaning brush 507 to rise and fall, thereby allowing the cleaning brush 507 to clean the dust and impurities attached to the filter screen 508. Through the meshing of the first gear 503 and the third gear 518, the rotating rod 513 rotates and drives the connected stirring plate 514 to rotate, thereby causing the stirring plate 514 to mix and stir the powder particles in the preheating tank 511, thereby uniformly heating the powder particles. The first valve inside the exhaust pipe 517 is opened, and the flue gas in the treatment box 3 is discharged through the exhaust pipe 517. The second valve inside the discharge pipe 516 is opened, and the preheated powder particles are discharged from the preheating tank 511 through the discharge pipe 516 and discharged into the sintering furnace 1 for sintering.

[0037] 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 the 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. An energy-saving continuous sintering furnace for powder metallurgy, comprising a sintering furnace (1); The filter box (2) and the processing box (3) are located above the sintering furnace (1), with the processing box (3) located to the right of the filter box (2); and support rods (4) fixedly connected to the bottom surfaces of the filter box (2) and the processing box (3) respectively, the bottom end of the support rods (4) being fixedly connected to the top surface of the sintering furnace (1), characterized in that: The filter box (2) is equipped with a filter assembly (50); The processing box (3) is equipped with a preheating component (51).

2. The energy-saving continuous sintering furnace for powder metallurgy according to claim 1, characterized in that: The filter assembly (50) includes a filter screen plate (508) fixedly connected to the inner side of the filter box (2). The filter screen plate (508) has a reciprocating threaded rod (504), a slider (506), a cleaning brush (507), and an exhaust pipe (5010) on its left side. The bottom surface of the left end of the exhaust pipe (5010) is fixedly inserted through the inner left side of the filter box (2) and the top surface of the sintering furnace (1), extending into the interior of the sintering furnace (1). The reciprocating threaded rod (504)... The bottom end thread extends through the top surface of the slider (506) to below the slider (506). The bottom end of the reciprocating threaded rod (504) is rotatably connected to the bottom surface inside the filter box (2) via a bearing seat. The right side of the slider (506) is fixedly connected to the left side of the cleaning brush (507). The right end of the cleaning brush (507) is slidably connected to the left side of the filter screen plate (508). The top end of the reciprocating threaded rod (504) extends through the top surface inside the filter box (2) to below the slider (506). Above the filter box (2), the surface of the reciprocating threaded rod (504) is rotatably connected to the inner wall of the filter box (2) through a bearing seat. A second gear (505) is fixedly sleeved on the surface of the reciprocating threaded rod (504). A support plate (501) is provided on the top surface of the filter box (2). The bottom surface of the support plate (501) is fixedly connected to the top surface of the filter box (2) and the top surface of the processing box (3). A motor (502) is fixedly connected to the top surface of the support plate (501). A first gear (503) is fixedly sleeved on the surface of the output rod of the motor (502). The side of the first gear (503) meshes with the side of the second gear (505). A vent pipe (5011) is provided on the right side of the filter box (2). The left end of the vent pipe (5011) is fixedly inserted through the right side of the filter box (2) and extends into the interior of the filter box (2). The right end of the vent pipe (5011) is fixedly inserted through the left side of the processing box (3) and extends into the interior of the processing box (3).

3. The energy-saving continuous sintering furnace for powder metallurgy according to claim 2, characterized in that: The preheating assembly (51) includes a preheating tank (511) located inside the processing box (3). A rotating rod (513) and a stirring plate (514) are installed inside the preheating tank (511). The top surface of the rotating rod (513) extends through the top surface inside the preheating tank (511) and the top surface inside the processing box (3), reaching above the processing box (3). The surface of the rotating rod (513) is rotatably connected to the inner side of the preheating tank (511) and the inner side of the processing box (3) respectively via bearing seats. The surface of the rotating rod (513) is fixedly connected to the end face of the stirring plate (514). An exhaust pipe (517) is installed inside the preheating tank (511), and the right end face of the exhaust pipe (517) is fixedly connected through the top surface inside the processing box (3). Extending to the top of the processing box (3), the exhaust pipe (517) is equipped with a first valve. An addition pipe (515) is provided above the processing box (3). The bottom end of the addition pipe (515) is fixedly inserted through the top surface of the processing box (3) and the top surface of the preheating tank (511) and extends into the interior of the preheating tank (511). A discharge pipe (516) is provided inside the preheating tank (511). The bottom end of the discharge pipe (516) is fixedly inserted through the bottom surface of the interior of the preheating tank (511), the processing box (3), and the top surface of the sintering furnace (1) and extends into the interior of the sintering furnace (1). A third gear (518) is fixedly sleeved on the surface of the rotating rod (513). The side of the third gear (518) meshes with the side of the first gear (503).

4. The energy-saving continuous sintering furnace for powder metallurgy according to claim 2, characterized in that: The filter box (2) is fixedly hinged to a baffle (509) on the front, and the baffle (509) is located on the left front of the filter screen (508).

5. An energy-saving continuous sintering furnace for powder metallurgy according to claim 2, characterized in that: A gas collection hood (5012) is fixedly connected to the left end face of the vent pipe (5011).

6. The energy-saving continuous sintering furnace for powder metallurgy according to claim 3, characterized in that: The discharge pipe (516) is inclined, and a second valve is provided inside the discharge pipe (516).

7. The energy-saving continuous sintering furnace for powder metallurgy according to claim 3, characterized in that: The preheating tank (511) is fixedly connected to both the upper and lower surfaces with connecting columns (512), and the end face of the connecting column (512) is fixedly connected to the inner side of the processing box (3).

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