Vacuumizing pipeline of vacuum sintering furnace

Abstract

The utility model discloses a vacuumizing pipeline of a vacuum sintering furnace, belongs to the technical field of vacuum sintering furnaces, and aims to solve the problems that the device only can arrange a filter screen in the pipeline, although a collecting box is arranged at the bottom for collecting, a corresponding cleaning mechanism is not arranged near the filter screen, and meanwhile, filter holes in the surface of the filter screen are still easy to block. The problems that in the prior art, more and more follow-up impurities are accumulated on the surface of a filter screen, under the condition, due to the fact that the filter screen is located in a pipeline, the filter screen is difficult to take out and clean manually, and the practicability is reduced are solved, the filter screen comprises a pipe body, and a connecting channel is formed in the upper surface of the pipe body and communicates with the interior of the pipe body; the pipe body, the connecting channel, the clamping groove, the sealing plate, the filter plate, the filter hole, the fixing block and the fixing groove are matched, the filter plate and the pipe body are connected in a split mode, the filter plate can be conveniently pulled out to be cleaned during cleaning, and the cleaning effect of the filter plate is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum sintering furnaces, and in particular relates to a vacuum extraction pipeline of a vacuum sintering furnace. Background Art

[0002] Patent announcement number CN208171034U discloses a vacuum evacuation pipeline of a vacuum sintering furnace, including a vacuum evacuation pipe body, the two ends of which are respectively connected to the furnace of the vacuum sintering furnace and a vacuum pump; the vacuum evacuation pipe body includes a filter pipe section, and the filter pipe section is provided with several layers of filter mesh for blocking dust. The utility model arranges a filter device in the vacuum pipe, and the filter device is a composite filter structure with multiple layers of filter screens, so that when the sintering furnace is vacuumed, the flying dust and heavy metal impurities in the sintering furnace are blocked at the filter screen device, so that these impurities will not enter the vacuum pump and damage the vacuum pump, thereby improving the safety of the entire vacuum system and extending the service life of the system. The above-mentioned device can only arrange the filter screen inside the pipe. Although a collecting box is arranged at the bottom for collection, a corresponding cleaning mechanism is not arranged near the filter screen. At the same time, the filter holes on the surface of the filter screen are still easy to be clogged, and subsequent impurities accumulate on the surface of the filter screen. In this case, since the filter screen is located inside the pipe, it is difficult to take it out manually for cleaning, which reduces the practicality. For this reason, we propose a vacuum pipe for a vacuum sintering furnace. Utility Model Content

[0003] The utility model aims to provide a vacuum evacuation pipeline for a vacuum sintering furnace to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum evacuation pipe of a vacuum sintering furnace, comprising a tube body, a connecting channel is provided on the upper surface of the tube body, the connecting channel is connected to the inside of the tube body, and the inner walls on both sides of the tube body are provided with card grooves in the vertical direction, and the card grooves are connected to the connecting channel. A sealing plate is provided above the tube body, and a pit is provided on the upper surface of the sealing plate. A filter plate is fixed to the side wall of the bottom end of the sealing plate, and filter holes are provided on the filter plate in the direction of a rectangular array. Both ends of the filter plate pass through the card grooves, and the size of the sealing plate is adapted to the size of the connecting channel.

[0005] It should be noted in the solution that symmetrically distributed fixing grooves are provided on the upper surface of the connecting channel, and symmetrically distributed fixing blocks are fixed to both ends of the sealing plate, and the fixing blocks are snap-fitted with the fixing grooves.

[0006] It is further worth mentioning that a pressure plate is arranged above the tube body, a sealing strip is connected to the lower surface of the pressure plate, and the cross-sectional area of ​​the sealing strip is larger than the cross-sectional area of ​​the sealing plate.

[0007] It should be further explained that a symmetrically distributed connecting plate 1 is fixed to the bottom end of the pressure plate, a connecting plate 2 is fixed to the bottom ends of the two connecting plates 1, the connecting plate 2 is located below the tube body, and a limiting plate is slidably connected between the two connecting plates 1, and a threaded groove is provided on the bottom side wall of the limiting plate.

[0008] As a preferred embodiment, a limiting channel is opened on the upper surface of the second connecting plate in the vertical direction, an adjusting shaft is rotatably connected between the inner walls of the limiting channel, a transmission thread is opened on the outer wall of the adjusting shaft, one end of the adjusting shaft extends into the inside of the thread groove, and the adjusting shaft and the limiting plate are threadedly connected.

[0009] As a preferred embodiment, a rotating plate is fixed to the bottom end of the adjusting shaft, and a side wall of the rotating plate away from the adjusting shaft is provided with symmetrically distributed fixing channels, a fixing rod is slidably connected between the inner walls of the fixing channels, a pull plate is commonly fixed to one end of the fixing rod, a reset spring is fixed between the pull plate and the rotating plate, and a bottom end side wall of the connecting plate 2 is provided with symmetrically distributed fixing holes along the circumferential direction, and one end of the fixing rod passes through the fixing hole.

[0010] Compared with the prior art, the vacuum sintering furnace vacuum pipeline provided by the utility model has at least the following beneficial effects:

[0011] (1) The utility model adopts a split type to connect the filter plate to the pipe body by cooperating with the provided pipe body, connecting channel, card slot, sealing plate, filter plate, filter hole, fixing block and fixing slot. When cleaning, the filter plate can be easily pulled out for cleaning, thereby ensuring the cleaning effect of the filter plate;

[0012] (2) The utility model can compress and seal the connection between the tube body and the filter plate by cooperating with the pressure plate, sealing strip, limit plate, adjustment shaft and rotating plate, thereby ensuring the sealing of the tube body during vacuuming and improving the overall sealing effect. At the same time, it is convenient to disassemble and clean the filter plate, and the cleaning effect is thorough, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a main perspective view of the utility model;

[0014] Figure 2 It is a side perspective view of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A.

[0016] In the figure: 1. tube body; 2. connecting channel; 3. slot; 4. sealing plate; 5. filter plate; 6. filter hole; 7. fixing block; 8. fixing slot; 9. pressure plate; 10. sealing strip; 11. connecting plate 1; 12. connecting plate 2; 13. limit plate; 14. threaded groove; 15. adjusting shaft; 16. transmission thread; 17. rotating plate; 18. fixing rod; 19. pulling plate; 20. reset spring; 21. fixing hole; 22. pit. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with embodiments.

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0019] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0020] See also Figure 1-3The utility model provides a vacuum evacuation pipeline of a vacuum sintering furnace, comprising a tube body 1, a connecting channel 2 is provided on the upper surface of the tube body 1, the connecting channel 2 is communicated with the inside of the tube body 1, and the inner walls on both sides of the tube body 1 are provided with card slots 3 in the vertical direction, the card slots 3 are communicated with the connecting channel 2, a sealing plate 4 is provided above the tube body 1, a pit 22 is provided on the upper surface of the sealing plate 4, a filter plate 5 is fixed to the side wall of the bottom end of the sealing plate 4, and filter holes 6 are provided on the filter plate 5 along the rectangular array direction, and both ends of the filter plate 5 pass through the card slots 3, the size of the sealing plate 4 is adapted to the size of the connecting channel 2, and the upper surface of the connecting channel 2 is provided with symmetrically divided The fixing groove 8 of the cloth, the two ends of the sealing plate 4 are fixed with symmetrically distributed fixing blocks 7, the fixing blocks 7 and the fixing grooves 8 are snap-fitted, a pressing plate 9 is arranged above the tube body 1, the lower surface of the pressing plate 9 is connected with a sealing strip 10, the cross-sectional area of ​​the sealing strip 10 is larger than the cross-sectional area of ​​the sealing plate 4, the bottom end of the pressing plate 9 is fixed with a symmetrically distributed connecting plate 11, the bottom ends of the two connecting plates 11 are fixed with connecting plates 2 12, the connecting plate 2 12 is located below the tube body 1, and the two connecting plates 1 11 are slidably connected with a limiting plate 13, the bottom end side wall of the limiting plate 13 is provided with a threaded groove 14, and the upper surface of the connecting plate 2 12 is vertically A limiting channel is provided in the direction, and an adjusting shaft 15 is rotatably connected between the inner walls of the limiting channel. A transmission thread 16 is provided on the outer wall of the adjusting shaft 15. One end of the adjusting shaft 15 extends to the inside of the thread groove 14. The adjusting shaft 15 is threadedly connected to the limiting plate 13. A rotating plate 17 is fixed to the bottom end of the adjusting shaft 15. When the rotating plate 17 is rotated, the adjusting shaft 15 drives the limiting plate 13 to move upward through the thread transmission, so that the limiting plate 13 presses the tube body 1, thereby fixing the position of the pressing plate 9, and then the sealing strip 10 seals the connection between the sealing plate 4 and the connecting channel 2. A symmetrically distributed fixing channel is provided on the side wall of the rotating plate 17 away from the adjusting shaft 15, and a fixing rod 18 is slidably connected between the inner walls of the fixing channel. A pull plate 19 is fixed to one end of the fixing rod 18, and a reset spring 20 is fixed between the pull plate 19 and the rotating plate 17. A symmetrically distributed fixing hole 21 is provided on the bottom end side wall of the connecting plate 12 along the circumferential direction, and one end of the fixing rod 18 passes through the fixing hole 21, wherein the elastic force of the reset spring 20 can make the fixing rod 18 stably pass through the fixing hole 21, thereby fixing the position of the rotating plate 17 and preventing the adjusting shaft 15 from rotating.

[0021] This scheme has the following working process: when the filter plate 5 is installed into the tube body 1, the sealing plate 4 is moved, and the sealing plate 4 drives the filter plate 5 to move, so that the two ends of the filter plate 5 enter the card slot 3, so that the filter hole 6 is located at the center of the tube body 1, and the gas inside the tube body 1 is filtered. At this time, the sealing plate 4 enters the connecting channel 2, and the sealing plate 4 drives the fixing block 7 to enter the fixing slot 8. At the same time, the sealing plate 4 and the fixing block 7 are arranged flat with the outer surface of the tube body 1, and then the pressing plate 9 is moved, and the pressing plate 9 drives the sealing strip 10 to move to the top of the sealing plate 4, and then the pulling plate 19 is moved, and the pulling plate 19 drives the fixing rod 18 to move, so that the fixing rod 18 moves out of the fixing hole 21, and the rotating plate 17 is rotated. The rotating plate 17 drives the adjusting shaft 15 to rotate, and the adjusting shaft 15 drives the limiting plate 13 to move through the threaded transmission, so that the limiting plate 13 moves upward, The tube body 1 is approached and pressed, so that the pressure plate 9 drives the sealing strip 10 to press and seal the connection of the sealing plate 4, and the pull plate 19 is loosened. Under the elastic force of the return spring 20, the fixing rod 18 passes through the corresponding fixing hole 21 to fix the position of the rotating plate 17. When the filter screen is cleaned, according to the above principle, the pull plate 19 is moved, and the pull plate 19 drives the fixing rod 18 to move, so that the fixing rod 18 moves out of the fixing hole 21, and the rotating plate 17 is rotated. The rotating plate 17 drives the adjusting shaft 15 to rotate, and the adjusting shaft 15 drives the limit plate 13 to move through the threaded transmission, so that the limit plate 13 moves downward, so that the limit plate 13 no longer presses the tube body 1, so that the pressure plate 9 no longer presses the sealing plate 4, and then the pit 22 set on the surface of the sealing plate 4 is moved, and the sealing plate 4 drives the filter plate 5 to move out of the tube body 1 to clean the filter screen.

[0022] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "including" or "comprising" and the like used in the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum evacuation pipeline of a vacuum sintering furnace, comprising a pipe body (1), characterized in that: A connecting channel (2) is provided on the upper surface of the tube body (1), the connecting channel (2) being in communication with the interior of the tube body (1), and slots (3) are provided on the inner walls of both sides of the tube body (1) in a vertical direction, the slots (3) being in communication with the connecting channel (2), a sealing plate (4) is provided above the tube body (1), a recess (22) is provided on the upper surface of the sealing plate (4), a filter plate (5) is fixed to the side wall at the bottom end of the sealing plate (4), filter holes (6) are provided on the filter plate (5) in a rectangular array direction, both ends of the filter plate (5) pass through the slots (3), and the size of the sealing plate (4) is adapted to the size of the connecting channel (2).

2. The vacuum evacuation pipeline of a vacuum sintering furnace according to claim 1, characterized in that: The upper surface of the connecting channel (2) is provided with symmetrically distributed fixing grooves (8), and both ends of the sealing plate (4) are fixed with symmetrically distributed fixing blocks (7), and the fixing blocks (7) are snap-fitted with the fixing grooves (8).

3. The vacuum evacuation pipeline of a vacuum sintering furnace according to claim 2, characterized in that: A pressing plate (9) is arranged above the tube body (1), and a sealing strip (10) is connected to the lower surface of the pressing plate (9), wherein the cross-sectional area of ​​the sealing strip (10) is greater than the cross-sectional area of ​​the sealing plate (4).

4. The vacuum evacuation pipeline of a vacuum sintering furnace according to claim 3, characterized in that: A symmetrically distributed connecting plate 1 (11) is fixed to the bottom end of the pressure plate (9), and a connecting plate 2 (12) is fixed to the bottom ends of the two connecting plates 1 (11). The connecting plate 2 (12) is located below the tube body (1), and a limiting plate (13) is slidably connected between the two connecting plates 1 (11), and a threaded groove (14) is provided on the side wall of the bottom end of the limiting plate (13).

5. The vacuum evacuation pipeline of a vacuum sintering furnace according to claim 4, characterized in that: A limiting channel is provided on the upper surface of the second connecting plate (12) in the vertical direction, an adjusting shaft (15) is rotatably connected between the inner walls of the limiting channel, a transmission thread (16) is provided on the outer wall of the adjusting shaft (15), one end of the adjusting shaft (15) extends into the interior of the thread groove (14), and the adjusting shaft (15) is threadedly connected to the limiting plate (13).

6. The vacuum evacuation pipeline of a vacuum sintering furnace according to claim 5, characterized in that: A rotating plate (17) is fixed to the bottom end of the adjusting shaft (15), and a side wall of the rotating plate (17) away from the adjusting shaft (15) is provided with symmetrically distributed fixing channels, and a fixing rod (18) is slidably connected between the inner walls of the fixing channels, and a pull plate (19) is fixed to one end of the fixing rod (18), and a return spring (20) is fixed between the pull plate (19) and the rotating plate (17), and a bottom end side wall of the connecting plate (12) is provided with symmetrically distributed fixing holes (21) along the circumferential direction, and one end of the fixing rod (18) passes through the fixing hole (21).

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