Heat accumulating type double-furnace-door sintering furnace

Abstract

The heat accumulating type double-furnace-door sintering furnace comprises a sintering furnace body, a driving device is arranged on the upper surface of the sintering furnace body, a rotating device is arranged in the sintering furnace body, sintering devices are arranged on the two sides of the inner wall of the sintering furnace body, a locking plate is fixedly installed on the side wall of the front face of the sintering furnace body, and furnace doors are arranged on the two sides of the locking plate. According to the rotary sintering device, the structural design of rotary sintering is adopted, when the rotary sintering device is used, the spray head and the driving motor are started, the conveying pipe conveys fuel gas to the spray head to be sprayed out and ignited so as to sinter a metal piece, and the driving motor can drive the first transmission shaft to rotate; therefore, the second transmission shaft can be driven to rotate, the first transmission shaft and the second transmission shaft drive the connecting shaft to rotate, the position of the supporting plate in the sintering furnace is adjusted, a metal piece is heated more evenly in the sintering process, and the quality of the sintered alloy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to a heat storage type double-door sintering furnace. Background Art

[0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc. In the manufacturing process of cemented carbide, the cemented carbide blank needs to be placed in a sintering furnace for sintering. The sintering furnace is a furnace that makes the solid particles of the green blank bond with each other, the grains grow, and the voids (pores) and grain boundaries gradually decrease at high temperatures. Through the transfer of substances, the total volume of the green blank shrinks and the density increases, and finally becomes a dense polycrystalline sintered body with a microstructure.

[0003] During the sintering process of cemented carbide blanks, ensuring the uniformity of the product's heating is an important condition for ensuring the quality of cemented carbide products. However, in the actual application of existing sintering furnaces, the edge of the blank is heated quickly because it is close to the heating component, while the middle part of the blank is heated relatively slowly because it is far away from the heating component, making it easy for the edge temperature of the cemented carbide blank to be higher than the center temperature, ultimately resulting in differences in color appearance and characteristics between the edge and middle parts of the cemented carbide, thus affecting the quality of the alloy after sintering. Utility Model Content

[0004] The utility model aims to provide a heat storage type double-door sintering furnace to solve the problems raised in the background technology in view of the shortcomings of the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A heat storage double-door sintering furnace comprises a sintering furnace, a driving device is arranged on the upper surface of the sintering furnace, a rotating device is arranged inside the sintering furnace, sintering devices are arranged on both sides of the inner wall of the sintering furnace, a locking plate is fixedly installed on the front side wall of the sintering furnace, furnace doors are arranged on both sides of the locking plate, connecting blocks are hinged inside the ends of the two groups of furnace doors away from each other, the connecting blocks are fixedly connected to the sintering furnace, and a handle is fixedly installed on the front side wall of the furnace door.

[0007] As a preferred solution of the heat storage double-door sintering furnace, the rotating device includes a connecting shaft rotatably connected to the sintering furnace, a first fixing ring is fixedly sleeved on the connecting shaft, two groups of first fixing plates are fixedly installed on the outer wall of the first fixing ring, and a support plate is slidably connected inside the first fixing plate.

[0008] As a preferred solution for the heat storage double-door sintering furnace, limit blocks are fixedly installed on the outer walls of both sides of the support plate, and a limit groove for the limit block to slide is opened inside the first fixed plate. The top of the inner wall of the limit groove is rotatably connected to multiple groups of equidistantly distributed rollers.

[0009] As a preferred solution for the heat storage double-door sintering furnace, a second fixing ring is fixedly sleeved on the connecting shaft below the first fixing ring, and two sets of support arms are fixedly installed on the side wall of the second fixing ring. The end of the support arm away from the second fixing ring is fixedly connected to the first fixing plate.

[0010] As a preferred solution of the heat storage double-door sintering furnace, the driving device includes a first transmission shaft and a second transmission shaft rotatably connected to the sintering furnace, the first transmission shaft and the second transmission shaft are fixedly connected to the connecting shaft, and a transmission belt is installed between the first transmission shaft and the second transmission shaft.

[0011] As a preferred solution for the heat storage double-door sintering furnace, a fixed seat is rotatably connected to the top of the first transmission shaft, the fixed seat is fixedly connected to the sintering furnace, a driving motor is fixedly installed on the upper surface of the fixed seat, a third fixing ring is fixedly sleeved on the outer wall of the driving motor, and the output end of the driving motor is fixedly connected to the first transmission shaft.

[0012] As a preferred solution of a heat storage double-door sintering furnace, the sintering device includes a second fixed plate fixedly connected to the sintering furnace, a plurality of groups of equidistantly distributed nozzles are fixedly installed on the outer wall of one side of the second fixed plate, a conveying pipe is fixedly installed on the side wall of the second fixed plate away from the nozzles, and one end of the conveying pipe away from the second fixed plate passes through the side wall of the sintering furnace.

[0013] As a preferred solution of the regenerative double-door sintering furnace, the sintering furnace adopts a regenerative sintering furnace.

[0014] Beneficial effects of the utility model:

[0015] The utility model adopts a rotary sintering structural design. When in use, the metal parts to be sintered are placed on the support plate, then the furnace door is closed, the nozzle and the driving motor are started, and the delivery pipe delivers the gas to the nozzle to spray and ignite it to sinter the metal parts. The driving motor can drive the first transmission shaft to rotate. Since a transmission belt is installed between the first transmission shaft and the second transmission shaft, the second transmission shaft can be driven to rotate, and then the connecting shaft is driven to rotate through the first transmission shaft and the second transmission shaft, so as to adjust the position of the support plate inside the sintering furnace, so that the metal parts are heated more evenly during the sintering process, and the quality of the alloy after sintering is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the heat storage double-door sintering furnace described in the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the sintering furnace described in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the sintering device described in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the driving device and the rotating device described in the utility model.

[0021] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of part A.

[0022] Figure 6 It is a structural schematic diagram of the second fixing ring and its components described in the utility model.

[0023] In the figure:

[0024] 1. Sintering furnace; 2. Driving device; 201. First transmission shaft; 202. Second transmission shaft; 203. Transmission belt; 204. Fixed seat; 205. Driving motor; 206. Third fixed ring; 3. Rotating device; 301. Connecting shaft; 302. First fixed ring; 303. First fixed plate; 304. Support plate; 305. Limiting block; 306. Limiting groove; 307. Roller; 308. Second fixed ring; 309. Support arm; 4. Sintering device; 401. Second fixed plate; 402. Nozzle; 403. Delivery pipe; 5. Locking plate; 6. Furnace door; 7. Handle; 8. Connecting block. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 6 As shown, the utility model provides a heat storage type double-door sintering furnace, including a sintering furnace 1. The sintering furnace 1 adopts a heat storage type sintering furnace. A driving device 2 is arranged on the upper surface of the sintering furnace 1. A rotating device 3 is arranged inside the sintering furnace 1. Sintering devices 4 are arranged on both sides of the inner wall of the sintering furnace 1. A locking plate 5 is fixedly installed on the front side wall of the sintering furnace 1. Furnace doors 6 are arranged on both sides of the locking plate 5. A connecting block 8 is hinged inside one end of the two groups of furnace doors 6 away from each other. The connecting block 8 is fixedly connected to the sintering furnace 1, and a handle 7 is fixedly installed on the front side wall of the furnace door 6.

[0030] In this embodiment, the rotating device 3 includes a connecting shaft 301 rotatably connected to the sintering furnace 1, a first fixing ring 302 is fixedly sleeved on the connecting shaft 301, two groups of first fixing plates 303 are fixedly installed on the outer wall of the first fixing ring 302, and a support plate 304 is slidably connected inside the first fixing plate 303. The support plate 304 can slide inside the first fixing plate 303 to facilitate the removal of metal parts on the support plate 304 after sintering.

[0031] In this embodiment, limit blocks 305 are fixedly installed on the outer walls of both sides of the support plate 304, and limit grooves 306 for the limit blocks 305 to slide are opened inside the first fixed plate 303. The top of the inner wall of the limit groove 306 is rotatably connected to multiple groups of equidistantly distributed rollers 307. The limit blocks 305 and the limit grooves 306 are used in combination to connect the support plate 304 and the first fixed plate 303, and the rollers 307 can reduce the friction between the limit blocks 305 and the first fixed plate 303 when the support plate 304 is taken out by a forklift or other equipment.

[0032] In this embodiment, a second fixing ring 308 is fixedly sleeved on the connecting shaft 301 below the first fixing ring 302, and two sets of support arms 309 are fixedly installed on the side wall of the second fixing ring 308. The end of the support arm 309 away from the second fixing ring 308 is fixedly connected to the first fixing plate 303. The second fixing ring 308 and the support arm 309 can improve the connection strength between the first fixing plate 303 and the connecting shaft 301.

[0033] In this embodiment, the driving device 2 includes a first transmission shaft 201 and a second transmission shaft 202 rotatably connected to the sintering furnace 1. The first transmission shaft 201 and the second transmission shaft 202 are fixedly connected to the connecting shaft 301. A transmission belt 203 is installed between the first transmission shaft 201 and the second transmission shaft 202. The transmission belt 203 can transmit power from the first transmission shaft 201 to the second transmission shaft 202. The first transmission shaft 201 and the second transmission shaft 202 can drive the connecting shaft 301 to rotate.

[0034] In this embodiment, a fixed seat 204 is rotatably connected to the top of the first transmission shaft 201, and the fixed seat 204 is fixedly connected to the sintering furnace 1. A driving motor 205 is fixedly installed on the upper surface of the fixed seat 204. A third fixing ring 206 is fixedly sleeved on the outer wall of the driving motor 205. The output end of the driving motor 205 is fixedly connected to the first transmission shaft 201. After the driving motor 205 is started, it can drive the first transmission shaft 201 to rotate, thereby providing stable rotational power for the support plate 304.

[0035] In this embodiment, the sintering device 4 includes a second fixed plate 401 fixedly connected to the sintering furnace 1, and a plurality of groups of equidistantly distributed nozzles 402 are fixedly installed on the outer wall of one side of the second fixed plate 401. A delivery pipe 403 is fixedly installed on the side wall of the second fixed plate 401 away from the nozzle 402. One end of the delivery pipe 403 away from the second fixed plate 401 passes through the side wall of the sintering furnace 1. After the nozzle 402 is started, the delivery pipe 403 delivers the fuel gas to the nozzle 402 for spraying and ignition to sinter the metal parts.

[0036] Working principle: When the utility model is used, the metal parts to be sintered are placed on the support plate 304, and then the furnace door 6 is closed, the nozzle 402 and the driving motor 205 are started, and the delivery pipe 403 delivers the gas to the nozzle 402 to spray and ignite to sinter the metal parts, and the driving motor 205 can drive the first transmission shaft 201 to rotate. Since a transmission belt 203 is installed between the first transmission shaft 201 and the second transmission shaft 202, the second transmission shaft 202 can be driven to rotate, and then the connecting shaft 301 is driven to rotate through the first transmission shaft 201 and the second transmission shaft 202, so as to adjust the position of the support plate 304 inside the sintering furnace 1, so that the metal parts are heated more evenly during the sintering process, and the quality of the alloy after sintering is improved.

[0037] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A regenerative double-door sintering furnace, characterized in that: The invention comprises a sintering furnace (1), wherein a driving device (2) is arranged on the upper surface of the sintering furnace (1), a rotating device (3) is arranged inside the sintering furnace (1), sintering devices (4) are arranged on both sides of the inner wall of the sintering furnace (1), a locking plate (5) is fixedly installed on the front side wall of the sintering furnace (1), furnace doors (6) are arranged on both sides of the locking plate (5), and connecting blocks (8) are hinged inside the ends of two groups of furnace doors (6) that are away from each other, and the connecting blocks (8) are fixedly connected to the sintering furnace (1), and a handle (7) is fixedly installed on the front side wall of the furnace door (6).

2. The regenerative double-door sintering furnace according to claim 1, characterized in that: The rotating device (3) comprises a connecting shaft (301) rotatably connected to the sintering furnace (1); a first fixing ring (302) is fixedly sleeved on the connecting shaft (301); two groups of first fixing plates (303) are fixedly mounted on the outer wall of the first fixing ring (302); and a supporting plate (304) is slidably connected inside the first fixing plate (303).

3. The regenerative double-door sintering furnace according to claim 2, characterized in that: Limit blocks (305) are fixedly installed on the outer walls of both sides of the support plate (304); a limit groove (306) for the limit block (305) to slide is provided inside the first fixed plate (303); and a plurality of groups of rollers (307) equidistantly distributed are rotatably connected to the top of the inner wall of the limit groove (306).

4. The regenerative double-door sintering furnace according to claim 2, characterized in that: A second fixing ring (308) is fixedly sleeved on the connecting shaft (301) below the first fixing ring (302), and two groups of supporting arms (309) are fixedly installed on the side wall of the second fixing ring (308), and one end of the supporting arm (309) away from the second fixing ring (308) is fixedly connected to the first fixing plate (303).

5. The regenerative double-door sintering furnace according to claim 2, characterized in that: The driving device (2) comprises a first transmission shaft (201) and a second transmission shaft (202) which are rotatably connected to the sintering furnace (1); the first transmission shaft (201) and the second transmission shaft (202) are fixedly connected to a connecting shaft (301); and a transmission belt (203) is installed between the first transmission shaft (201) and the second transmission shaft (202).

6. The regenerative double-door sintering furnace according to claim 5, characterized in that: The top of the first transmission shaft (201) is rotatably connected to a fixed seat (204), the fixed seat (204) is fixedly connected to the sintering furnace (1), a driving motor (205) is fixedly mounted on the upper surface of the fixed seat (204), a third fixing ring (206) is fixedly sleeved on the outer wall of the driving motor (205), and an output end of the driving motor (205) is fixedly connected to the first transmission shaft (201).

7. The regenerative double-door sintering furnace according to claim 1, characterized in that: The sintering device (4) comprises a second fixed plate (401) fixedly connected to the sintering furnace (1); a plurality of groups of nozzles (402) distributed at equal intervals are fixedly installed on an outer wall of one side of the second fixed plate (401); a conveying pipe (403) is fixedly installed on a side wall of the second fixed plate (401) away from the nozzles (402); and an end of the conveying pipe (403) away from the second fixed plate (401) passes through the side wall of the sintering furnace (1).

8. The regenerative double-door sintering furnace according to claim 1, characterized in that: The sintering furnace (1) is a regenerative sintering furnace.

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