Vacuum sintering furnace with vacuum pipeline filtering structure

Abstract

The utility model belongs to the technical field of vacuum sintering furnaces, and particularly relates to a vacuum sintering furnace with a vacuum pipeline filtering structure, which comprises a box body, the right side of the box body is fixedly connected with a connecting pipe, the right end of the connecting pipe is fixedly connected with a furnace body, the upper end of the box body is contacted with a cover, and the inner wall of the box body is fixedly connected with a filter screen. A base plate is fixedly connected to the interior of the box body, and a sealing ring is slidably connected to the interior of the cover. The box body and the filter screen are ingeniously designed, impurities in airflow can be efficiently collected, and internal purity is guaranteed. Meanwhile, by means of the synergistic effect of the sealing ring, the first spring and other components, the elastic force of the first spring can promote the sealing ring to be tightly attached to the base plate, and the sealing performance between the cover and the box is greatly enhanced. While the filtering work is completed, the vacuum property of the pipeline is well maintained, and the problem that the formed workpiece contains impurities is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum sintering furnace technical field, specifically is a kind of vacuum sintering furnace with vacuum pipeline filtration structure. BACKGROUND

[0002] Vacuum sintering furnace is a kind of equipment for heating and sintering materials in vacuum environment. It has many significant advantages and plays an important role in many fields. Its working principle is to extract air in the furnace through the air extraction system to form a high vacuum environment, and then use heating elements to raise the temperature in the furnace to the set value, so that the materials are sintered under vacuum conditions. This environment can effectively prevent the materials from being oxidized during sintering, ensuring the purity and performance of the materials. Vacuum sintering furnace has a wide range of applications. In the field of powder metallurgy, it can be used to prepare high-performance metal parts; in the hard alloy industry, it can improve the density and hardness of the alloy; in the sintering of ceramic materials, it helps to obtain high-quality ceramic products. According to the utility model disclosed in patent authorization announcement No. CN207081324U, the vacuum sintering furnace includes a furnace body, a heat preservation chamber and a material box are provided in the furnace body, the heat preservation chamber is provided with a front door and a rear door at both ends, the material box is allowed to enter and exit through the front door and the rear door, and the material box is sealed during heating to isolate it from the outside environment. The gas in the furnace is extracted before heating to create a vacuum in the heat preservation chamber.

[0003] However, there are some problems in the process of using vacuum sintering furnace. When gas enters the furnace, it often contains various impurities. These impurities, along with the flow of gas, come into contact with the workpiece in the furnace environment. Due to the working characteristics of vacuum sintering furnace, the internal environment is relatively closed and the process requirements are high, so it is difficult to effectively remove impurities. As a result, these impurities are easily mixed into the workpiece during its formation, ultimately resulting in the presence of impurities in the formed workpiece, affecting the quality and performance of the workpiece, and causing many inconveniences in subsequent use and processing. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of vacuum sintering furnace with vacuum pipeline filtration structure, solve the problem that gas contains impurities when vacuum sintering furnace is used in pipeline gas admission, and easily lead to internal workpiece formation containing impurities.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A vacuum sintering furnace with vacuum pipeline filtering structure, including the cabinet, the right side fixed connection of cabinet has the connecting pipe, the right end fixed connection of connecting pipe has the furnace body, the upper end of cabinet contacts has the lid, the inner wall of cabinet is fixedly connected with filter screen, the inside fixed connection of cabinet has the backing pad, the inside slide connection of lid has the sealing ring, the lower fixed connection of lid has the fixed link, the outside fixed connection of fixed link has the fixed block, the inside fixed connection of sealing ring has the limit support, the outside of limit support is provided with first spring, be provided with pressure relief mechanism on the lid.

[0006] Preferably, the inside slide connection of lid has bolt, the bolt is connected through screw thread with cabinet, through the design of bolt, can limit the function of lid.

[0007] Preferably, the sealing ring is slide connected with the cabinet, and the sealing ring is in contact with the backing pad. Through the design of the sealing ring, the sealing property between the lid and the cabinet can be increased.

[0008] Preferably, the fixed link is slide connected with the sealing ring, and the fixed block is slide connected with the sealing ring. Through the design of the fixed link and the fixed block, the sealing ring can be guided.

[0009] Preferably, the limit support is in contact with the fixed link, and the limit support is slide connected with the fixed block. Through the design of the limit support, the sealing ring can be limited.

[0010] Preferably, one end of the first spring is in contact with the fixed block, and the other end of the first spring is in contact with the sealing ring. Through the design of the first spring, the sealing ring and the backing pad can be adhered.

[0011] Preferably, the pressure relief mechanism comprises a sleeve, the inside of the lid is fixedly connected with the sleeve, the inside of the sleeve is slide connected with a slide rod, the lower end of the slide rod is fixedly connected with a sealing pad, the sealing pad is slide connected with the sleeve, the inside of the sleeve is fixedly connected with a limit ring, the sealing pad is in contact with the limit ring, the outside of the slide rod is provided with a second spring, one end of the second spring is in contact with the slide rod, the other end of the second spring is in contact with the sleeve, the inside of the sleeve is provided with a gas hole. Through the design of the pressure relief mechanism, the cabinet can be easily relieved.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] 1. The utility model discloses a box and filter screen are designed ingeniously, can high -efficient collection of impurity in airflow, guarantee inside pure. Meanwhile, with the cooperation of sealing ring, first spring and other components, the first spring elasticity can make sealing ring and the pad close adhesion, greatly enhance the sealing property between the cover and the box. While completing the filtration work, the vacuum property of the pipeline is maintained well, and the workpiece forming impurity problem is solved effectively.

[0014] 2. The utility model discloses a sleeve, slide rod, damping block and other components are set up, can in filter screen blockage and so on situation, the pressure of the box is too big and the box is relieved conveniently, thereby make the pipeline keep stable when running. DRAWINGS

[0015] Figure 1 It is the overall structure perspective drawing of the utility model;

[0016] Figure 2 It is the partial structure perspective drawing of the utility model Figure 1 ;

[0017] Figure 3 It is the front view sectional view of the utility model Figure 2 ;

[0018] Figure 4 It is the A department structure enlarged view in the utility model Figure 3 ;

[0019] Figure 5 It is the B department structure enlarged view in the utility model Figure 3 ;

[0020] In the drawing: 1, box;11, connecting pipe;12, furnace body;2, cover;21, bolt;22, filter screen;3, pad;31, sealing ring;32, fixed link;33, fixed block;34, limit frame;35, first spring;4, pressure relief mechanism;41, sleeve;42, slide rod;43, sealing washer;44, limit ring;45, second spring;46, air hole. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5The utility model provides a vacuum sintering furnace with vacuum pipeline filtering structure, including the box 1, the right side fixed connection of box 1 has the connecting pipe 11, the right end fixed connection of connecting pipe 11 has the furnace body 12, the upper end of box 1 contacts has the lid 2, the inside slide connection of lid 2 has the bolt 21, and the bolt 21 is connected through screw thread with box 1, through the design of bolt 21, can limit lid 2, the fixed connection of the inner wall of box 1 has the filter screen 22, the inside fixed connection of box 1 has the backing pad 3, the inside slide connection of lid 2 has the sealing ring 31, and the sealing ring 31 is connected with box 1 slidingly, and the sealing ring 31 contacts backing pad 3, through the design of sealing ring 31, can increase the sealing property between lid 2 and box 1, and the lower end fixed connection of lid 2 has the fixed rod 32.

[0023] Please refer to Figures 2-5 The outside fixed connection of fixed rod 32 has the fixed block 33, and the sealing ring 31 is connected with fixed rod 32 slidingly, and the sealing ring 31 is connected with fixed block 33 slidingly, through the design of fixed rod 32 and fixed block 33, can guide sealing ring 31, and the inside fixed connection of sealing ring 31 has the limiting frame 34, and the limiting frame 34 contacts fixed rod 32, and the limiting frame 34 is connected with fixed block 33 slidingly, through the design of limiting frame 34, can limit sealing ring 31, and the outside of limiting frame 34 is provided with first spring 35, and one end of first spring 35 contacts fixed block 33, and the other end of first spring 35 contacts sealing ring 31, through the design of first spring 35, can drive sealing ring 31 and backing pad 3 to adhere, and the pressure relief mechanism 4 is set up on lid 2.

[0024] Please refer to Figures 2-5 The pressure relief mechanism 4 includes sleeve 41, and the inside fixed connection of lid 2 has sleeve 41, and the inside slide connection of sleeve 41 has slide rod 42, and the lower end fixed connection of slide rod 42 has sealing pad 43, and sealing pad 43 is connected with sleeve 41 slidingly, and the inside fixed connection of sleeve 41 has limiting ring 44, and sealing pad 43 contacts limiting ring 44, and the outside of slide rod 42 is provided with second spring 45, and one end of second spring 45 contacts slide rod 42, and the other end of second spring 45 contacts sleeve 41, and the inside of sleeve 41 is provided with air hole 46, through the design of pressure relief mechanism 4, can conveniently relieve the pressure of box 1.

[0025] The utility model discloses a specific implementation process as follows: when using, the connecting pipe 11 makes gas into the box 1 when inletting, so that after filtering by the filter screen 22, the gas is sent into the furnace body 12 by the connecting pipe 11, and by arranging the sealing ring 31, the sealing ring 31 is moved by the elastic force of the first spring 35, so that the sealing ring 31 adheres to the backing pad 3, thereby effectively increasing the sealing property between the box 1 and the lid 2.

[0026] When the air pressure in the box 1 is too large, the gas can enter the sleeve 41, so that the gas drives the sealing gasket 43 to move, the sealing gasket 43 drives the sliding rod 42 to move, the sliding rod 42 extrudes the second spring 45, and the sealing gasket 43 moves to the upper end of the air hole 46, so that the air hole 46 can be used for pressure relief.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vacuum sintering furnace having a vacuum line filtering structure, comprising a box (1), characterized in that: The right side of the box (1) is fixedly connected with a connecting pipe (11), the right end of the connecting pipe (11) is fixedly connected with a furnace body (12), the upper end of the box (1) is in contact with a cover (2), the inner wall of the box (1) is fixedly connected with a filter screen (22), the inside of the box (1) is fixedly connected with a pad (3), the inside of the cover (2) is slidably connected with a sealing ring (31), the lower end of the cover (2) is fixedly connected with a fixed rod (32), the outer side of the fixed rod (32) is fixedly connected with a fixed block (33), the inside of the sealing ring (31) is fixedly connected with a limiting frame (34), the outer side of the limiting frame (34) is provided with a first spring (35), the cover (2) is provided with a pressure relief mechanism (4).

2. The vacuum sintering furnace with vacuum pipeline filtering structure according to claim 1, characterized in that: The inside of the cover (2) is slidably connected with a bolt (21), and the bolt (21) is connected with the box (1) through threads.

3. The vacuum sintering furnace with vacuum pipeline filtering structure according to claim 1, characterized in that: The sealing ring (31) is slidably connected with the box (1), and the sealing ring (31) is in contact with the pad (3).

4. The vacuum sintering furnace having a vacuum line filtering structure according to claim 1, characterized in that: The fixed rod (32) is slidably connected with the sealing ring (31), and the fixed block (33) is slidably connected with the sealing ring (31).

5. The vacuum sintering furnace having a vacuum line filtering structure according to claim 1, characterized in that: The limiting frame (34) is in contact with the fixed rod (32), and the limiting frame (34) is slidably connected with the fixed block (33).

6. The vacuum sintering furnace having a vacuum line filtering structure according to claim 1, characterized in that: One end of the first spring (35) is in contact with the fixed block (33), and the other end of the first spring (35) is in contact with the sealing ring (31).

7. The vacuum sintering furnace having a vacuum line filtering structure according to claim 1, characterized in that: The pressure relief mechanism (4) comprises a sleeve (41), the inside of the cover (2) is fixedly connected with the sleeve (41), the inside of the sleeve (41) is slidably connected with a sliding rod (42), the lower end of the sliding rod (42) is fixedly connected with a sealing gasket (43), the sealing gasket (43) is slidably connected with the sleeve (41), the inside of the sleeve (41) is fixedly connected with a limiting ring (44), the sealing gasket (43) is in contact with the limiting ring (44), the outer side of the sliding rod (42) is provided with a second spring (45), one end of the second spring (45) is in contact with the sliding rod (42), the other end of the second spring (45) is in contact with the sleeve (41), and the inside of the sleeve (41) is provided with an air hole (46).

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