Air guide plate flexible fixing structure, material box and vacuum sintering furnace

Abstract

The utility model discloses a kind of flexible fixing structure of air guide plate, material box and vacuum sintering furnace, it is related to metallurgical production equipment field, flexible fixing structure of air guide plate includes flexible deformation piece and mounting piece, flexible deformation piece includes installation end and deformation part, installation end is fixedly installed in mounting piece, deformation part is contacted with the insertion strip for supporting air guide plate, flexible fixing structure of air guide plate is set in material box, material box is set in furnace body to form vacuum sintering furnace.The utility model provides flexible fixing structure of air guide plate, material box and vacuum sintering furnace, when the expansion degree of material plate is greater than material box, air guide plate exerts force to flexible fixing structure of air guide plate under the extrusion of preceding material plate, deformation part in flexible fixing structure of air guide plate deforms to make that the air guide plate under pressure generates displacement, the displacement of air guide plate is equivalent to the deformation amount sum of preceding material plate and rear material plate, avoid air guide plate to be extruded deformation by the material plate of expansion, prevent air guide plate and material box damage.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical production equipment, and in particular to a flexible fixing structure for a gas guide plate, a material box, and a vacuum sintering furnace. Background Technology

[0002] A vacuum sintering furnace is a specialized piece of equipment used for high-temperature sintering of materials such as powder metallurgy, ceramics, and cemented carbide in a vacuum or controlled atmosphere. It prevents material oxidation and contamination by removing air and harmful gases, and optimizes the sintering process, thereby obtaining high-density, high-performance sintered products. During vacuum sintering, inert gases (Ar, N2) or reducing gases (H2) need to be introduced to prevent material oxidation or promote specific chemical reactions. Therefore, air guide plates need to be installed inside the vacuum sintering furnace to ensure that the airflow evenly sweeps the material. Chinese patent document CN216815047U discloses an internal air intake device for sintering equipment, such as... Figure 1 As shown, this patent adopts a technical solution of "an air inlet is provided at each of the two ends of the top of the material box, an air outlet is provided in the center of the bottom of the material box, and an air guide plate is set between the air inlet and the air outlet". The function of the air guide plate is to prevent the gas from directly washing over the product after entering the material box. Instead, the gas enters the material placement space through evenly distributed small holes on the air guide plate. The air guide holes are evenly distributed on the top, bottom, left, and right sides of the air guide plate to avoid the situation where the air flow is concentrated in some places, resulting in excessive local airflow intensity, while the air flow is insufficient in other places, resulting in insufficient airflow intensity. Figure 2 This is a magnified schematic diagram of the airflow at the front of the material box. It can be seen that each air guide hole on the air guide plate is aligned with the flow channel of the product on each material plate, carrying away the product adhesive without blowing away or damaging the product.

[0003] However, the above technical solutions still have some technical defects, mainly manifested in the following aspects: During the heating process, heat is first transferred to the material box and then to the material plate and the product above the material plate. Under the condition of the same material, the higher the temperature, the more the structure expands. Therefore, the expansion of the material box is greater than that of the material plate during the heating process. During the cooling process, the closer to the cold end, the faster the cooling. The cooling rate of the material box and its external components is greater than the cooling rate of the product and material plate inside the material box. During this process, although both the material plate and the material box are contracting, the contraction rate of the material plate is less than that of the material box, causing the material plate to squeeze the surrounding structure. If the front and rear air guide plates are rigidly fixed, the material box will be damaged by the air guide plates during the cooling stage.

[0004] Therefore, a vacuum sintering furnace that can solve the above problems is needed. Utility Model Content

[0005] The purpose of this invention is to provide a flexible fixing structure for the air guide plate, a material box, and a vacuum sintering furnace to solve the problems existing in the prior art. When the expansion degree of the front material plate and the rear material plate is greater than that of the material box, the air guide plate at the front end of the material plate applies force to the flexible fixing structure of the air guide plate under the compression of the front material plate. The deformation of the deformable part in the flexible fixing structure of the air guide plate causes the compressed air guide plate to be displaced. The displacement of the air guide plate is equivalent to the sum of the deformation of the front material plate and the rear material plate, so as to avoid the air guide plate being squeezed and deformed by the expanded material plate and prevent damage to the air guide plate and the material box.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a flexible fixing structure for an air guide plate, including a flexible deformable component and an installation component. The flexible deformable component includes an installation end and a deformable portion. The installation end is fixedly installed in the installation component, and the deformable portion contacts the insert used to support the air guide plate.

[0007] In one embodiment, the deformable portion is a carbon composite spring strip, the two ends of which are mounting ends. The two ends of the carbon composite spring strip are respectively fixedly installed in the mounting component, and the unfixed area of ​​the carbon composite spring strip is the deformable portion.

[0008] In one embodiment, the mounting component includes two vertically aligned fixing blocks. The upper fixing block has a through slot in the vertical direction, and the lower fixing block has an upward-opening semi-through slot. The upper end of the carbon composite spring strip is inserted from below the through slot, and the lower end of the carbon composite spring strip is inserted from the top of the semi-through slot. The fixing block also has a through bolt mounting hole. The insertion end of the clamping bolt extends into the bolt mounting hole from the first end and extends out from the second end of the bolt mounting hole. The portion of the clamping bolt extending out from the second end of the bolt mounting hole is a clamping connection section. The bolt mounting hole avoids the through slot or the semi-through slot.

[0009] This utility model also provides a material box, including a material box body composed of a material box top plate, a material box side plate, a material box door plate, and a material box bottom plate, and further including a front material plate, a rear material plate, and the aforementioned air guide plate flexible fixing structure disposed within the material box body; the inner sides of the material box top plate and the material box bottom plate are disposed opposite each other, the inner sides of the two material box side plates are disposed opposite each other on the left and right sides of the material box body, and the inner sides of the two material box door plates are disposed opposite each other on the front and rear sides of the material box body; a rectangular single plate hole is provided at the rear end of the front material plate, the opening of the single plate hole is located at the rear edge of the front material plate, and the structure of the rear material plate is the same as that of the front material plate; the air guide plate flexible fixing structure is provided at the front end of the material box body, and a air guide plate rigid fixing structure is provided at the rear end of the material box body; at least two horizontal bosses aligned front and rear ends are provided on the inner side of the material box side plate, forming a material plate slot between the horizontal bosses, the height of the material plate slot is not less than the thickness of the front material plate, and the material plate slot is located between the air guide plate flexible fixing structure and the rear end of the material box body. Between the rigid fixing structures of the air guide plates, the two side plates of the material boxes are arranged opposite each other. The area between the two material plate slots aligned in the horizontal direction is the material plate mounting layer. One front material plate and one rear material plate are placed in one material plate mounting layer. The front end of the rear material plate is aligned with the rear end of the horizontal boss, and the front end of the front material plate is aligned with the front end of the horizontal boss. The rear ends of the front material plate and the rear material plate are joined together. The front end face of the horizontal boss and the flexible fixing structure of the air guide plate clamp one air guide plate, and the rear end face of the horizontal boss and the rigid fixing structure clamp the other air guide plate. An air inlet channel is formed between each material box door panel and its nearest air guide plate. Two air inlet holes are opened on the upper plate of the material box, and each air inlet hole is connected to a different air inlet channel. The single plate hole of the front material plate and the single plate hole of the rear material plate are joined together to form a complete plate vent hole. The plate vent hole forms an exhaust channel in the vertical direction. An exhaust hole is opened in the center of the bottom plate of one material box, and the exhaust hole is connected to the exhaust channel.

[0010] In one embodiment, the inner front end of the side plate of the material box is provided with a strip slot, and the left and right ends of the strip that are in contact with the deformed part are respectively inserted into the strip slots on the left and right sides of the side plate of the material box. The mounting member is fixed to the inner side of the door panel of the material box at the front end of the material box body.

[0011] In one embodiment, the rigid fixing structure of the air guide plate includes the rear end face of the horizontal boss and a stop bar, the air guide plate is clamped and fixed between the rear end face of the horizontal boss and the stop bar, and the stop bar is fixed to the side plate of the material box.

[0012] In one embodiment, the rigid fixing structure of the air guide plate includes the rear end face of the horizontal boss and the insert strip. The air guide plate is clamped and fixed between the rear end face of the horizontal boss and the insert strip. The insert strip is fixed by a stepped groove provided on the inner rear end of the material box side plate. The two ends of the rear door screw are respectively fixed between the insert strip and the material box door panel located on the rear side of the material box body.

[0013] In one embodiment, a reinforcing strip is provided between the rear end of the material plate mounting layer and the air guide plate, and the reinforcing strip is fixed to the side plate.

[0014] In one embodiment, a bolt seat is provided at the outer end of the side plate of the material box, and the bolt seat is provided with a groove for receiving the bolt. The bolt seats on the two side plates of the material box are aligned. When the material box door is locked, the bolt is simultaneously inserted into the grooves of the two opposing bolt seats.

[0015] This utility model also provides a vacuum sintering furnace, including a furnace body and the aforementioned material bin. The inner wall of the furnace body is provided with a heat insulation layer. The material bin body is installed in the furnace body. A heating element is provided around the material bin. The first end of the internal air inlet pipe passes through the furnace body and the heat insulation layer and connects to the air vent. The second end of the internal air inlet pipe is located outside the furnace body. An air inlet control valve is provided on the section of the internal air inlet pipe located outside the furnace body. The first end of the exhaust pipe passes through the furnace body and the heat insulation layer and connects to the exhaust vent. The second end of the exhaust pipe is located outside the furnace body.

[0016] The present invention achieves the following technical advantages over the prior art: This invention provides a flexible fixing structure for a gas guide plate, a material box, and a vacuum sintering furnace. When the expansion of the front and rear material plates is greater than that of the material box, the gas guide plate at the front end of the material plate applies force to the flexible fixing structure under the compression of the front material plate. The deformation of the deformable part in the flexible fixing structure causes the compressed gas guide plate to shift. The displacement of the gas guide plate is equivalent to the sum of the deformation of the front and rear material plates, preventing damage to the gas guide plate and the material box. The material plate slot acts as a limit and guide, causing the material plate to deform along the length of the slot, fully utilizing the deformable part to bear the deformation of the material plate. The gas guide plate adjacent to the flexible fixing structure only experiences displacement without deformation. Although the rear material plate end at the air guide plate of the rigid fixed structure adjacent to the air guide plate will also expand, the air guide plate of the rigid fixed structure adjacent to the air guide plate is extremely easy to deform. Therefore, the air guide plate of the rigid fixed structure adjacent to the air guide plate will serve as the support surface for the expanding material plate. Even if the air guide plate of the rigid fixed structure adjacent to the air guide plate is squeezed, its subsequent expansion will be converted into squeezing of the front material plate, thereby transferring to the flexible fixed structure of the air guide plate without damaging the air guide plate of the rigid fixed structure adjacent to the air guide plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the existing technology; Figure 2 This is a schematic diagram illustrating the air intake effect of an existing air guide plate. Figure 3 This is an exploded view of a hopper including a flexible fixing structure for an air guide plate, as described in an embodiment of this utility model. Figure 4 This is an exploded view of a hopper including a first type of rigidly fixed air guide plate structure in an embodiment of this utility model; Figure 5 This is an exploded view of a hopper including a second type of rigidly fixed air guide plate structure in an embodiment of this utility model; Figure 6 This is a schematic diagram of the installation structure of the flexible fixing structure of the air guide plate in an embodiment of this utility model; Figure 7 This is a schematic diagram of the front end structure of a material box with a first type of rigid fixing structure for air guide plates according to an embodiment of the present utility model. Figure 8 for Figure 7 MM-direction sectional view; Figure 9 for Figure 8 NN-direction sectional view; Figure 10 This is a schematic diagram of the front end structure of a material box with a second type of rigid fixing structure for air guide plates according to an embodiment of the present utility model. Figure 11 for Figure 10 MM-direction sectional view; Figure 12 for Figure 11 NN-direction sectional view; Figure 13 This is a schematic diagram of the rigid fixing structure of the air guide plate in the second embodiment of this utility model; Figure 14 A schematic diagram of the inner structure of the side plate of the material box adapted to the second type of rigid fixing structure of the air guide plate in this embodiment of the utility model; Figure 15 This is a schematic diagram of the rear end structure of the material plate with a reinforcing strip added to the second type of rigid fixing structure of the air guide plate in this embodiment of the present invention; Figure 16This is a schematic diagram of the inner structure of the side plate of the material box when two air guide plates are set in the embodiment of this utility model; Figure 17 This is a schematic diagram of the deformable part of the movable air guide plate under pressure in an embodiment of this utility model.

[0019] The components are as follows: 1. Material box body; 2. Material box side plate; 3. Material box door panel; 4. Air guide plate; 5. Material box top plate; 6. Door bolt; 7. Door bolt seat; 8. Furnace body; 9. Front material plate; 10. Rear material plate; 11. Insulation layer; 12. Heating element; 13. Internal air inlet pipe; 14. Exhaust pipe; 15. Baffle strip; 16. Insert strip; 17. Fixing block; 18. Carbon composite material spring strip; 19. Rear door screw; 20. Material box bottom plate; 21. Insert strip slot; 22. Material plate slot; 23. Step groove; 24. Reinforcing strip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the implementation of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are merely for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Therefore, features specified with "first," "second," etc., may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0022] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.

[0023] The purpose of this invention is to provide a flexible fixing structure for the air guide plate, a material box, and a vacuum sintering furnace to solve the problems existing in the prior art. When the expansion degree of the material plate is greater than that of the material box, the air guide plate at the front end of the material plate applies force to the flexible fixing structure under the compression of the material plate. The deformation of the deformable part in the flexible fixing structure causes the compressed air guide plate to be displaced. The displacement of the air guide plate is equivalent to the deformation of the material plate, thus avoiding the air guide plate being squeezed and deformed by the expanded material plate and preventing damage to the air guide plate.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1 like Figures 1 to 17 As shown, this utility model provides a flexible fixing structure for an air guide plate, including a flexible deformable component and a mounting component. The flexible deformable component includes a mounting end and a deformable portion. The mounting end is fixedly installed inside the mounting component, and the deformable portion contacts the insert 16 used to support the air guide plate 4. When the air guide plate 4 is compressed, it will cause the insert 16 to squeeze the deformable portion. The deformable portion deforms, giving the insert 16 and the air guide plate 4 room to move, so that the air guide plate 4 and the material box will not be squeezed, deformed, or damaged.

[0026] In one embodiment, the deformable portion is a carbon composite spring strip 18, with both ends of the carbon composite spring strip 18 serving as mounting ends. Both ends of the carbon composite spring strip 18 are fixedly mounted within the mounting component, and the unfixed area of ​​the carbon composite spring strip 18 is the deformable portion. Carbon composite materials have high specific stiffness and strength, are lightweight, fatigue-resistant, and possess good heat resistance and an extremely low coefficient of thermal expansion, making them suitable for long-term use in high-temperature environments.

[0027] In one embodiment, the mounting component includes two vertically aligned fixing blocks 17. The upper fixing block 17 has a through slot along the vertical direction, and the lower fixing block 17 has an upward-opening semi-through slot. The upper end of the carbon composite spring strip 18 is inserted from below the through slot, and the lower end of the carbon composite spring strip 18 is inserted from the top of the semi-through slot. The fixing block 17 also has a through bolt mounting hole. The insertion end of the clamping bolt extends into the bolt mounting hole from the first end and extends out from the second end of the bolt mounting hole. The portion of the clamping bolt extending out of the second end of the bolt mounting hole is a clamping connection section. The bolt mounting hole avoids the through slot or the semi-through slot. The combination structure of the through slot and the semi-through slot can ensure the stability of the carbon composite spring strip 18 while facilitating its installation. The second end of the clamping bolt extending out of the bolt mounting hole can be connected to a fixing surface, clamping the fixing block 17 between the clamping bolt head and the fixing surface, thereby installing the fixing block 17, for example, in a door panel of a cabinet. The purpose of avoiding the through slot or half slot with bolt mounting holes is to prevent the clamping bolts from interfering with the carbon composite spring strip 18. Preferably, each fixing block 17 is provided with two bolt mounting holes, which are symmetrically arranged on the left and right sides of the through slot or half slot.

[0028] Example 2 like Figures 1 to 17As shown, this utility model also provides a material box, including a material box body 1 composed of a material box upper plate 5, a material box side plate 2, a material box door plate 3, and a material box bottom plate 20, and further including a front material plate 9, a rear material plate 10, and the aforementioned air guide plate flexible fixing structure disposed within the material box body 1. The inner sides of the material box upper plate 5 and the inner sides of the material box bottom plate 20 are disposed opposite each other, the inner sides of the two material box side plates 2 are disposed opposite each other on the left and right sides of the material box body 1, and the inner sides of the two material box door plates 3 are disposed opposite each other on the front and rear sides of the material box body 1. A rectangular single-plate hole is provided at the rear end of the front material plate 9, and the opening of the single-plate hole is located at the rear edge of the front material plate 9. The structure of the rear material plate 10 is the same as that of the front material plate 9. The material box body 1 has a flexible air guide plate fixing structure at its front end and a rigid air guide plate fixing structure at its rear end. At least two horizontal bosses aligned front and rear ends are provided on the inner side of the material box side plate 2, forming a material plate slot 22 between them. The height of the material plate slot 22 is not less than the thickness of the front material plate 9. The material plate slot 22 is located between the flexible and rigid air guide plate fixing structures. The two material box side plates 2 are positioned opposite each other. The area between the two horizontally aligned material plate slots 22 is a material plate mounting layer. A front material plate 9 and a rear material plate 10 are placed within this mounting layer, with the front end of the rear material plate 10 aligned with the rear end of the horizontal bosses. The front end of the front material plate 9 is aligned with the front end of the horizontal boss. The rear end of the front material plate 9 and the rear end of the rear material plate 10 are joined together. The front end face of the horizontal boss and the flexible fixing structure of the air guide plate clamp one air guide plate 4. The rear end face of the horizontal boss and the rigid fixing structure clamp another air guide plate 4. An air inlet is formed between each material box door panel 3 and its closest air guide plate 4. Two air inlets are opened on the upper plate 5 of the material box. Each air inlet is connected to a different air inlet. The single plate hole of the front material plate 9 and the single plate hole of the rear material plate 10 are joined together to form a complete plate vent. The plate vent forms an exhaust channel in the vertical direction. An exhaust hole is opened in the center of the bottom plate 20 of a material box. The exhaust hole is connected to the exhaust channel.

[0029] During the cooling process, the expansion of the front material plate 9 and the rear material plate 10 is greater than that of the material box body 1. At this time, the front end of the front material plate 9 will press against the adjacent air guide plate 4. After being pressed, the air guide plate 4 will drive the insert 16 to press against the deformable part. The deformable part will deform to make room for the insert 16 and the air guide plate 4 to move. The air guide plate 4 will move until the moving distance reaches the expansion limit of the front material plate 9 and the rear material plate 10. The expansion pressure of the front material plate 9 and the rear material plate 10 is not completely borne by the air guide plate 4, and the air guide plate 4 will not be deformed or damaged by the front material plate 9. The material plate slot 22 plays a limiting and guiding role, so that the front material plate 9 deforms along the length direction of the material plate slot 22, making full use of the deformable part to bear the total deformation of the front material plate 9 and the rear material plate 10. The air guide plate 4 adjacent to the flexible fixed structure of the air guide plate only has displacement and no deformation. Although the end of the rear material plate 10 at the air guide plate 4 of the rigid fixed structure adjacent to the air guide plate will also expand, the air guide plate 4 of the rigid fixed structure adjacent to the air guide plate will serve as the support surface for the expanding rear material plate 10 because the flexible fixed structure of the air guide plate is extremely easy to deform. Even if the air guide plate 4 of the rigid fixed structure adjacent to the air guide plate is squeezed, its subsequent expansion will be converted into squeezing the front material plate 9, and will not damage the air guide plate 4 of the rigid fixed structure adjacent to the air guide plate.

[0030] In one embodiment, an insert slot 21 is provided on the inner front end of the side plate 2 of the material bin. The left and right ends of the insert 16, which contacts the deformable part, are inserted into the insert slots 21 on the left and right sides of the side plate 2 of the material bin, respectively. The mounting component is fixed to the inner side of the material bin door panel 3 at the front end of the material bin body 1. When the material bin door panel 3 is opened, the flexible fixing structure of the air guide plate can be taken away and detached from the material bin body 1. After removing the air guide plate 4 at the front end, the front material plate 9 and the rear material plate 10 can be taken out.

[0031] In one embodiment, the rigid fixing structure of the air guide plate includes a rear end face of a horizontal boss and a baffle 15. The air guide plate 4 is clamped and fixed between the rear end face of the horizontal boss and the baffle 15, and the baffle 15 is fixed to the side plate 2 of the material box. This rigid fixing of the air guide plate is suitable for working conditions where it is not necessary to remove the air guide plate 4, the front material plate 9, and the rear material plate 10 from the rear door.

[0032] In one embodiment, the rigid fixing structure of the air guide plate includes a rear end face of a horizontal boss and an insert 16. The air guide plate 4 is clamped and fixed between the rear end face of the horizontal boss and the insert 16. The insert 16 is fixed by a stepped groove 23 provided at the inner rear end of the material box side plate 2. The two ends of the rear door screw 19 are respectively fixed between the insert 16 and the material box door plate 3 located at the rear side of the material box body 1. When using this rigid fixing structure of the air guide plate, first remove the rear material box door plate 3, then remove the insert 16, and then remove the rear air guide plate 4 to sequentially remove the rear material plate 10 and the front material plate 9. After the insert 16 is inserted from the opening of the stepped groove 23, it sinks and is fixed in the lower short groove. The size of the short groove matches the size of the end of the insert 16, so that the insert 16 can be stably fixed in the stepped groove 23 when the air guide plate 4 is under force.

[0033] In one embodiment, a reinforcing strip 24 is provided between the material plate mounting layer and the air guide plate 4, and the reinforcing strip 24 is fixed to the side plate. The front material plate 9 and the rear material plate 10 are inserted and installed from the front end of the material box body 1. The reinforcing strip 24 can absorb the insertion impact and protect the air guide plate 4. In addition, the side of the reinforcing strip 24 acts as the rear end face equivalent to a horizontal boss. The air guide plate 4 is clamped and fixed between the side of the reinforcing strip 24 and the insert 16. The reinforcing strip 24 also serves as a support surface when the expansion amount of the material plate is greater than the expansion amount of the material box, providing support force.

[0034] In one embodiment, both the front and rear ends of the material box body 1 can be configured as flexible fixed structures for air guides. In this embodiment, the front material plate 9 and the rear material plate 10 can enter and exit from either end of the material box body 1.

[0035] In one embodiment, a bolt seat 7 is provided at the outer end of the side plate 2 of the material bin, and the bolt seat 7 is provided with a groove for accommodating the bolt 6. The bolt seats 7 on the two side plates 2 of the material bin are aligned. When the material bin door 3 is locked, the bolt 6 is simultaneously inserted into the grooves of the two opposing bolt seats 7. An auxiliary fixing flange is provided at the upper end of the material bin door 3, and the flange is fixed to the outer side of the upper plate 5 of the material bin.

[0036] Example 3 like Figures 1 to 17As shown, this utility model also provides a vacuum sintering furnace, including a furnace body 8 and the aforementioned material bin. An insulation layer 11 is provided on the inner wall of the furnace body 8. The material bin body 1 is installed inside the furnace body 8, and a heating element 12 is provided around the material bin. The first end of the inner air inlet pipe 13 passes through the furnace body 8 and the insulation layer 11, connecting to a vent hole. The second end of the inner air inlet pipe 13 is located outside the furnace body 8. An air inlet control valve is provided on the section of the inner air inlet pipe 13 located outside the furnace body 8. The first end of the exhaust pipe 14 passes through the furnace body 8 and the insulation layer 11, connecting to an exhaust hole. The second end of the exhaust pipe 14 is located outside the furnace body 8. During operation, gas enters simultaneously from both inner air inlet pipes 13, passes through two air guide plates 4, and simultaneously enters the material bin body 1 from both directions. After blowing, the gas enters the exhaust duct and is finally discharged from the exhaust pipe 14.

[0037] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A flexible fixing structure for an air guide plate, characterized in that: It includes a flexible deformable component and a mounting component. The flexible deformable component includes a mounting end and a deformable part. The mounting end is fixedly installed in the mounting component, and the deformable part is in contact with the insert (16) used to support the air guide plate (4).

2. The flexible fixing structure of the air guide plate according to claim 1, characterized in that: The deformable part is a carbon composite spring strip (18), and the two ends of the carbon composite spring strip (18) are the mounting ends. The two ends of the carbon composite spring strip (18) are respectively fixedly installed in the mounting component, and the unfixed area of ​​the carbon composite spring strip (18) is the deformable part.

3. The flexible fixing structure of the air guide plate according to claim 2, characterized in that: The mounting component includes two vertically aligned fixing blocks (17). The upper fixing block (17) has a through slot in the vertical direction, and the lower fixing block (17) has an upward-opening semi-through slot. The upper end of the carbon composite spring strip (18) is inserted from below the through slot, and the lower end of the carbon composite spring strip (18) is inserted from the top of the semi-through slot. The fixing block (17) is also provided with a through bolt mounting hole. The insertion end of the clamping bolt extends into the first end of the bolt mounting hole and extends out from the second end of the bolt mounting hole. The part of the clamping bolt extending out from the second end of the bolt mounting hole is a clamping connection section. The bolt mounting hole avoids the slot and passes through the slot or the semi-through slot.

4. A material bin, characterized in that: The material box body (1) is composed of a material box upper plate (5), a material box side plate (2), a material box door plate (3) and a material box bottom plate (20), and also includes a front material plate (9), a rear material plate (10) and a flexible fixing structure for the air guide plate as described in any one of claims 1 to 3, which are disposed in the material box body (1); The inner side of the upper plate (5) of the material box is arranged opposite to the inner side of the bottom plate (20) of the material box, the inner sides of the two side plates (2) of the material box are arranged opposite to each other on the left and right sides of the material box body (1), and the inner sides of the two door panels (3) of the material box are arranged opposite to each other on the front and rear sides of the material box body (1). The front material plate (9) has a rectangular single plate hole at its rear end. The opening of the single plate hole is located at the rear edge of the front material plate (9). The structure of the rear material plate (10) is the same as that of the front material plate (9). The material box body (1) has a flexible air guide plate fixing structure at its front end and a rigid air guide plate fixing structure at its rear end. At least two horizontal bosses aligned front and rear ends are provided on the inner side of the material box side plate (2), forming a material plate slot (22) between them. The height of the material plate slot (22) is not less than the thickness of the front material plate (9). The material plate slot (22) is located between the flexible air guide plate fixing structure and the rigid air guide plate fixing structure. The two material box side plates (2) are arranged opposite each other, with the two material plates aligned horizontally. The area between the slots (22) is a material plate mounting layer. A front material plate (9) and a rear material plate (10) are placed in a material plate mounting layer. The front end of the rear material plate (10) is aligned with the rear end of the horizontal boss. The front end of the front material plate (9) is aligned with the front end of the horizontal boss. The rear end of the front material plate (9) and the rear end of the rear material plate (10) are joined together. The front end face of the horizontal boss and the flexible fixing structure of the air guide plate clamp one air guide plate (4). The rear end face of the horizontal boss and the rigid fixing structure clamp the other air guide plate (4). Each of the material box door panels (3) forms an air inlet channel with its nearest air guide plate (4), and two air inlets are opened on the upper plate (5) of the material box, each air inlet connecting to a different air inlet channel; The single-plate holes of the front material plate (9) and the single-plate holes of the rear material plate (10) are combined to form a complete plate ventilation hole. The plate ventilation hole forms an exhaust channel in the vertical direction. An exhaust hole is opened in the center of the bottom plate (20) of the material box, and the exhaust hole is connected to the exhaust channel.

5. The material bin according to claim 4, characterized in that: The inner front end of the side plate (2) of the material box is provided with a strip slot (21). The left and right ends of the strip (16) that is in contact with the deformed part are respectively inserted into the strip slot (21) on the side plate (2) of the material box located on the left and right sides. The mounting member is fixed to the inner side of the door plate (3) at the front end of the material box body (1).

6. The material bin according to claim 4, characterized in that: The rigid fixing structure of the air guide plate includes the rear end face of the horizontal boss and the baffle (15). The air guide plate (4) is clamped and fixed between the rear end face of the horizontal boss and the baffle (15). The baffle (15) is fixed on the side plate (2) of the material box.

7. The material bin according to claim 4, characterized in that: The rigid fixing structure of the air guide plate includes the rear end face of the horizontal boss and the insert (16). The air guide plate (4) is clamped and fixed between the rear end face of the horizontal boss and the insert (16). The insert (16) is fixed by the stepped groove (23) provided on the inner rear end of the material box side plate (2). The two ends of the rear door screw (19) are respectively fixed between the insert (16) and the material box door plate (3) located on the rear side of the material box body (1).

8. The material bin according to claim 7, characterized in that: A reinforcing strip (24) is provided between the rear end of the material plate mounting layer and the air guide plate (4), and the reinforcing strip (24) is fixed on the side plate.

9. The material bin according to claim 4, characterized in that: A bolt seat (7) is provided at the outer end of the side plate (2) of the material box. The bolt seat (7) is provided with a groove for accommodating the bolt (6). The bolt seats (7) on the two side plates (2) of the material box are aligned. When the door plate (3) of the material box is locked, the bolt (6) is simultaneously inserted into the grooves of the two opposite bolt seats (7).

10. A vacuum sintering furnace, characterized in that: The furnace includes a furnace body (8) and a material box as described in any one of claims 4 to 9. The inner wall of the furnace body (8) is provided with a heat insulation layer (11). The material box body (1) is installed inside the furnace body (8). A heating element (12) is provided around the material box. The first end of the inner air inlet pipe (13) passes through the furnace body (8) and the heat insulation layer (11) and is connected to a vent hole. The second end of the inner air inlet pipe (13) is located outside the furnace body (8). An air inlet control valve is provided on the section of the inner air inlet pipe (13) located outside the furnace body (8). The first end of the exhaust pipe (14) passes through the furnace body (8) and the heat insulation layer (11) and is connected to the exhaust hole. The second end of the exhaust pipe (14) is located outside the furnace body (8).

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