Exhaust structure of pressure sintering furnace

Abstract

The utility model relates to the technical field of sintering furnaces, in particular to an exhaust structure of a pressure sintering furnace. According to the technical scheme, the device comprises an exhaust pipe and a filter pipe, a one-way exhaust valve and a rotating motor are fixedly installed at the two ends of the filter pipe respectively, the tail end of an output shaft of the rotating motor is fixedly connected with a brush plate through a rotating shaft, and an insertion opening is formed in the side, close to the one-way exhaust valve, of the upper surface of the filter pipe; a fixing plate is fixedly installed at the position, above the inserting opening, of the upper surface of the filtering pipe through bolts, a sealing plate is fixedly installed on the lower surface of the fixing plate, a filtering net is fixedly installed on the side, close to the rotating motor, of the lower surface of the sealing plate, and a notch is formed in the position, close to the lower surface, of the outer surface of the filtering net. The filter screen can be cleaned under the condition that the filter screen is not detached, operation is convenient and fast, meanwhile, the sintering furnace does not need to be shut down in the cleaning process, operation of the sintering furnace is not affected, and the filter screen is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to an exhaust structure of a pressure sintering furnace. Background Art

[0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. It has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. Therefore, it is widely used as a tool material, such as turning tools, milling cutters, planers, drills, boring tools, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone and ordinary steel. It can also be used to cut difficult-to-process materials such as heat-resistant steel, stainless steel, high manganese steel, and tool steel. In the process of cemented carbide processing and production, it is necessary to sinter the cemented carbide powder compact in a pressure sintering furnace to obtain the physical and mechanical properties required by cemented carbide.

[0003] After searching, it was found that the exhaust structure of the pressure sintering furnace in the prior art is typically such as the exhaust structure of a low-temperature sintering furnace for producing cemented carbide tools disclosed in publication number CN213163066U, which includes a furnace body, an exhaust hole is provided on one side of the furnace body, an exhaust pipe is inserted in the exhaust hole, a one-way valve is installed on the exhaust pipe, a clamping slot is provided at one end of the exhaust pipe, a filter screen is inserted in the clamping slot, a perforation is provided at one end of the exhaust pipe, a sealing plate is provided at the end of the filter screen passing through the perforation, a through hole is provided on the sealing plate, a screw is installed on the exhaust pipe, a nut is threadedly connected to one end of the screw passing through the through hole, and a pull rod is installed at one end of the filter screen. After a period of time, the nut is screwed out of the screw and the pull rod is pulled upward to pull the screw out of the through hole. After the filter screen is pulled out of the clamping slot, the filter screen is pulled out of the exhaust pipe from the perforation for cleaning and replacement, so as to prevent the pipeline from being blocked and affecting the exhaust, ensure the filtering effect, and solve the problem of inconvenient cleaning in the prior art.

[0004] The sintering furnace exhaust structure in the prior art requires the filter structure to be regularly pulled out from the exhaust pipe and cleaned, which is a cumbersome operation. In the process of removing and cleaning the filter, the sintering furnace will also be shut down, affecting the normal operation of the sintering furnace. Therefore, we propose an exhaust structure for a pressure sintering furnace. Utility Model Content

[0005] The utility model aims to provide an exhaust structure for a pressure sintering furnace, which has the advantages of being able to clean the filter without removing the filter, and being easy to operate. At the same time, the sintering furnace does not need to be shut down during the cleaning process, and the operation of the sintering furnace is not affected, and the filter is easy to replace. It solves the problem that the exhaust structure of the sintering furnace in the prior art needs to regularly pull out the filter structure from the inside of the exhaust pipe and clean it, which is relatively cumbersome to operate. At the same time, during the process of disassembling and cleaning the filter, the sintering furnace will also be shut down, affecting the normal operation of the sintering furnace.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust structure of a pressure sintering furnace, comprising an exhaust pipe and a filter pipe, wherein two ends of the filter pipe are respectively fixedly installed with a one-way exhaust valve and a rotating motor, the end of the output shaft of the rotating motor is fixedly connected to a brush plate through a rotating shaft, a socket is provided on the upper surface of the filter pipe on the side close to the one-way exhaust valve, a fixing plate is fixedly installed on the upper surface of the filter pipe at a position above the socket by bolts, a sealing plate is fixedly installed on the lower surface of the fixing plate, a filter is fixedly installed on the lower surface of the sealing plate on the side close to the rotating motor, a notch is provided on the outer surface of the filter near the lower surface, a column is fixedly installed on the bottom of the inner wall of the filter pipe, and a dust hopper is fixedly installed on the lower surface of the filter pipe near the inner side of the filter.

[0007] Preferably, an exhaust pipe is welded to a side of the upper surface of the filter tube close to the rotating motor.

[0008] Preferably, a timing switch is fixedly mounted on the outer surface of the rotating motor.

[0009] Preferably, an impeller is fixedly mounted on a side of the outer surface of the rotating shaft close to the rotating motor.

[0010] Preferably, a limiting groove is provided on the outer surface of the column.

[0011] Preferably, a dust exhaust valve is fixedly mounted on the lower surface of the dust collecting hopper.

[0012] Preferably, a transparent observation window is fixedly mounted on the front surface of the dust collecting hopper.

[0013] Preferably, a through hole is provided on the outer surface of the column, a bearing is fixedly installed inside the through hole, and the rotating shaft passes through the bearing.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model achieves the effect of cleaning the filter without disassembling the filter by arranging a one-way exhaust valve, a filter pipe, an exhaust pipe, a filter screen, a notch, a column, a fixing plate, a socket, a sealing plate, a rotating motor, a rotating shaft, a brush plate and a dust collecting hopper, so that the filter screen can be cleaned without disassembling the filter screen, and the operation is convenient. At the same time, the sintering furnace does not need to be shut down during the cleaning process, and the operation of the sintering furnace is not affected, and the filter screen is convenient to replace. The gas discharged from the pressure sintering furnace enters the interior of the filter pipe through the one-way exhaust valve, and the dust impurities in the gas are filtered out through the filter screen, and the filtered dust partly falls into the dust collecting hopper, and partly adheres to the surface of the filter screen. When the filter screen needs to be cleaned, the rotating motor drives the brush plate to rotate, and the brush plate brushes off the dust adhered to the surface of the filter screen, and the brushed dust falls into the dust collecting hopper, so that the filter screen does not need to be disassembled from the interior of the filter pipe for cleaning, and when the filter screen or the brush plate needs to be replaced, the bolt is loosened to disassemble the fixing plate, and the filter screen can be taken out from the interior of the filter pipe, so the filter screen and the brush plate can be replaced.

[0016] 2. The utility model can automatically clean the filter screen regularly by setting a timing switch to control the operation of the rotating motor, thereby improving the degree of automation.

[0017] 3. The utility model provides a transparent observation window, which makes it easy to observe the amount of dust collected in the dust hopper so that it can be discharged through the dust exhaust valve in time.

[0018] 4. The utility model is provided with an impeller, so that when the filter is cleaned by the brush plate, the impeller rotates to send air to the filter, and the airflow blows back the filter to blow away the dust in the filter mesh, which is also conducive to the dust brushed by the brush plate to be blown off, thereby improving the cleaning effect of the filter.

[0019] 5. The utility model provides a limiting groove, so when the column is inserted into the notch on the outer surface of the filter, the edge of the filter close to the notch is inserted into the limiting groove, thereby fixing the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 4 This is a schematic diagram of the side view structure of the filter screen of the utility model;

[0024] Figure 5 It is a side view structural diagram of the column of the utility model.

[0025] Figure numerals: 1. One-way exhaust valve; 2. Fixed plate; 3. Exhaust pipe; 4. Rotating motor; 5. Timing switch; 6. Filter tube; 7. Bolt; 8. Dust hopper; 9. Transparent observation window; 10. Dust exhaust valve; 11. Socket; 12. Sealing plate; 13. Filter; 14. Impeller; 15. Rotating shaft; 16. Brush plate; 17. Limiting groove; 18. Column; 19. Notch; 20. Through hole; 21. Bearing. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1

[0028] like Figure 1-Figure 5 As shown, the utility model proposes an exhaust structure of a pressure sintering furnace, including an exhaust pipe 3 and a filter pipe 6, a one-way exhaust valve 1 and a rotating motor 4 are fixedly installed at both ends of the filter pipe 6, a timing switch 5 is fixedly installed on the outer surface of the rotating motor 4, and the timing switch 5 controls the start and stop of the rotating motor 4 at a fixed time. The exhaust pipe 3 is welded on the side of the upper surface of the filter pipe 6 close to the rotating motor 4, and the gas exhausted from the pressure sintering furnace passes through the one-way exhaust valve 1 and enters the inside of the filter pipe 6, and is discharged from the exhaust pipe 3 after dust is filtered out. The end of the output shaft of the rotating motor 4 is fixedly connected with a brush plate 16 through a rotating shaft 15, and a socket 11 is provided on the upper surface of the filter pipe 6 close to the one-way exhaust valve 1. A fixing plate is fixedly installed on the upper surface of the filter pipe 6 at a position above the socket 11 through bolts 7. 2. A sealing plate 12 is fixedly installed on the lower surface of the fixed plate 2. The sealing plate 12 is located inside the socket 11 and plays a sealing role. A filter screen 13 is fixedly installed on the side of the lower surface of the sealing plate 12 close to the rotating motor 4. A notch 19 is arranged on the outer surface of the filter screen 13 close to the lower surface. A column 18 is fixedly installed on the bottom of the inner wall of the filter tube 6. The column 18 is located inside the notch 19. A through hole 20 is arranged on the outer surface of the column 18. A bearing 21 is fixedly installed inside the through hole 20, and the rotating shaft 15 passes through the bearing 21, thereby improving the stability of the rotating shaft 15. A dust collecting hopper 8 is fixedly installed on the lower surface of the filter tube 6 close to the inner side of the filter screen 13. A dust exhaust valve 10 is fixedly installed on the lower surface of the dust collecting hopper 8, and the dust collected inside the dust collecting hopper 8 is discharged through the dust exhaust valve 10.

[0029] When the utility model is in use, the gas discharged from the pressure sintering furnace enters the filter tube 6 through the one-way exhaust valve 1, and the dust impurities in the gas are filtered out by the filter screen 13. The filtered dust partially falls into the dust hopper 8, and partially adheres to the surface of the filter screen 13. The timing switch 5 controls the rotating motor 4 to work at a fixed time. When the rotating motor 4 works, the rotating motor 4 drives the brush plate 16 to rotate. The brush plate 16 brushes off the dust adhered to the surface of the filter screen 13, and the brushed dust falls into the dust hopper 8. There is no need to remove the filter screen 13 from the filter tube 6 for cleaning. When the filter screen 13 or the brush plate 16 needs to be replaced, the bolts 7 are loosened to remove the fixing plate 2, and the filter screen 13 can be taken out from the filter tube 6, so that the filter screen 13 and the brush plate 16 can be replaced.

[0030] Embodiment 2

[0031] like Figure 1-Figure 3 As shown, the utility model proposes an exhaust structure of a pressure sintering furnace. Compared with the first embodiment, this embodiment also includes an impeller 14 fixedly installed on the side of the outer surface of the rotating shaft 15 close to the rotating motor 4, and a transparent observation window 9 fixedly installed on the front surface of the dust hopper 8. The transparent observation window 9 is convenient for observing the dust collection amount inside the dust hopper 8 so that it can be discharged in time through the dust exhaust valve 10. A limiting groove 17 is provided on the outer surface of the column 18. When the column 18 is inserted into the notch 19 on the outer surface of the filter 13, the edge portion of the filter 13 close to the notch 19 is inserted into the limiting groove 17, thereby fixing the filter 13.

[0032] In this embodiment, when the filter 13 is cleaned by the brush plate 16, the impeller 14 rotates to supply air to the filter 13, and the airflow blows back the filter 13 to blow away the dust in the mesh of the filter 13, which is also beneficial for the dust brushed away by the brush plate 16 to be blown off, thereby improving the cleaning effect of the filter 13.

[0033] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An exhaust structure of a pressure sintering furnace, comprising an exhaust pipe (3) and a filter pipe (6), characterized in that: A one-way exhaust valve (1) and a rotating motor (4) are fixedly mounted on both ends of the filter tube (6), and a brush plate (16) is fixedly connected to the end of the output shaft of the rotating motor (4) via a rotating shaft (15). A socket (11) is provided on the upper surface of the filter tube (6) near the one-way exhaust valve (1). A fixing plate (2) is fixedly mounted on the upper surface of the filter tube (6) at a position above the socket (11) via bolts (7). A sealing plate (12) is fixedly mounted on the lower surface of the fixing plate (2). A filter screen (13) is fixedly mounted on the lower surface of the sealing plate (12) near the rotating motor (4). A notch (19) is provided on the outer surface of the filter screen (13) near the lower surface. A column (18) is fixedly mounted on the bottom of the inner wall of the filter tube (6). A dust collecting hopper (8) is fixedly mounted on the lower surface of the filter tube (6) near the inner side of the filter screen (13).

2. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: An exhaust pipe (3) is welded to a side of the upper surface of the filter tube (6) close to the rotating motor (4).

3. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: A timing switch (5) is fixedly mounted on the outer surface of the rotating motor (4).

4. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: An impeller (14) is fixedly mounted on a side of the outer surface of the rotating shaft (15) close to the rotating motor (4).

5. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: The outer surface of the column (18) is provided with a limiting groove (17).

6. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: A dust exhaust valve (10) is fixedly mounted on the lower surface of the dust collecting hopper (8).

7. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: A transparent observation window (9) is fixedly mounted on the front surface of the dust collecting hopper (8).

8. The exhaust structure of a pressure sintering furnace according to claim 1, characterized in that: The outer surface of the column (18) is provided with a through hole (20), a bearing (21) is fixedly installed inside the through hole (20), and the rotating shaft (15) passes through the bearing (21).

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