CN211060622U - Vacuum furnace vacuum system - Google Patents
Vacuum furnace vacuum system Download PDFInfo
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- CN211060622U CN211060622U CN201921732195.3U CN201921732195U CN211060622U CN 211060622 U CN211060622 U CN 211060622U CN 201921732195 U CN201921732195 U CN 201921732195U CN 211060622 U CN211060622 U CN 211060622U
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Abstract
The utility model belongs to the technical field of vacuum furnace equipment, specifically speaking are vacuum furnace vacuum system. Including the slide valve pump, the one-level filters the exhaust pipe, the second grade filters the exhaust pipe, big dust collector, little dust collector, lobe pump blast pipe and lobe pump, wherein big dust collector's intake pipe is connected with the vacuum furnace, big dust collector has one or more outlet ducts, each outlet duct is connected with the air inlet of lobe pump through the one-level filters the exhaust pipe, the gas vent of lobe pump is connected with the air inlet of lobe pump blast pipe, be equipped with a plurality of gas vents on the lobe pump blast pipe, and be connected with a plurality of little dust collector's air inlet respectively through the pipeline, little dust collector's gas vent passes through the second grade and filters the exhaust pipe and is connected with the slide valve pump. The utility model discloses simple structure, easy dismounting, long service life, it is good to manage to find time the performance.
Description
Technical Field
The utility model belongs to the technical field of vacuum furnace equipment, in particular to vacuum furnace vacuum system.
Background
The vacuum system is the indispensable part in the vacuum furnace equipment, and the vacuum furnace mainly evacuates by the vacuum pump among the vacuum system, and if current vacuum system uses on high temperature vacuum furnace, the time of evacuating is of a specified duration, and the cooling effect is poor, and dust removal performance is low, influences the progress of evacuating, has reduced the availability factor of whole platform equipment during the use.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a vacuum furnace vacuum system to solve current vacuum furnace vacuum system and manage to find time for a specified time, the cooling effect is poor, the dust removal performance hangs down and work efficiency hangs down the problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a vacuum furnace vacuum system comprises a slide valve pump, a primary filtering exhaust pipeline, a secondary filtering exhaust pipeline, a large dust removal device, a small dust removal device, a Roots pump exhaust pipe and a Roots pump, wherein an air inlet pipe of the large dust removal device is connected with a vacuum furnace, the large dust removal device is provided with one or more air outlet pipes, each air outlet pipe is connected with an air inlet of the Roots pump through the primary filtering exhaust pipeline, an air outlet of the Roots pump is connected with an air inlet of the Roots pump exhaust pipe, a plurality of air outlets are arranged on the Roots pump exhaust pipe and are respectively connected with the air inlets of the small dust removal devices through pipelines, and the air outlet of the small dust removal device is connected with the slide valve pump through the secondary filtering exhaust pipeline.
The primary filtering exhaust pipeline comprises a large-diameter corrugated pipe, a straight pipe and a large-diameter baffle valve connected between the large-diameter corrugated pipe and the straight pipe, wherein the lower end of the straight pipe is connected with an air inlet of the Roots pump, the upper end of the straight pipe is connected with an air outlet of the large-diameter baffle valve, an air inlet of the large-diameter baffle valve is connected with one end of the large-diameter corrugated pipe, and the other end of the large-diameter corrugated pipe is connected with an air outlet pipe of the large dust removal device.
The large-diameter baffle valve comprises a large-diameter baffle valve body and a large-diameter baffle valve cylinder, the large-diameter baffle valve cylinder is arranged on a large-diameter baffle valve upper cover at the top of the large-diameter baffle valve body and used for opening or closing the large-diameter baffle valve, a large-diameter baffle valve stroke switch is arranged at the upper end of a cylinder body of the large-diameter baffle valve cylinder, the large-diameter baffle valve cylinder is provided with a large-diameter baffle valve top cylinder rod in-out pressing plate, the large-diameter baffle valve top cylinder rod in-out pressing plate is matched with the large-diameter baffle valve stroke switch to limit the extension stroke of the large-diameter baffle valve cylinder, a large-diameter baffle valve side connecting pipe is arranged at a side air inlet of the large-diameter baffle valve body, and a large-diameter baffle valve lower connecting pipe is arranged at a bottom.
The straight pipe comprises a straight pipe body, an upper flange and a lower flange, wherein the upper flange and the lower flange are fixedly connected to the two ends of the straight pipe body, the lower flange is fixedly connected with an air inlet of the roots pump through a bolt, the upper flange is connected with an air outlet of the large-diameter baffle valve in a positioning mode, a loop flange is sleeved on the outer side of the upper flange and is positioned through a spigot, and the loop flange is fixedly connected with the air outlet of the large-diameter baffle valve through a bolt.
The exhaust pipe of the Roots pump is supported by the exhaust pipe support of the Roots pump, the exhaust pipe of the Roots pump comprises a barrel body of the exhaust pipe of the Roots pump and blind plates which are connected with two ends of the barrel body of the exhaust pipe of the Roots pump in a buckling mode, one or more air inlets are arranged on the barrel body of the exhaust pipe of the Roots pump, the air inlets are respectively connected with an air inlet connecting pipe, a plurality of air outlets are arranged at intervals along the axial direction, and the air outlets are respectively connected with an.
The diameter of the air inlet connecting pipe is larger than that of the air outlet connecting pipe.
The small dust removal device is of a split structure and comprises an upper barrel body and a lower barrel body which are detachably connected, wherein the bottom of the lower barrel body is provided with a small dust removal device supporting leg, the side wall of the upper barrel body is provided with a small dust removal device side connecting pipe connected with the air inlet, and the top of the upper barrel body is provided with a small dust removal device upper connecting pipe connected with the air outlet.
The secondary filtering exhaust pipeline comprises a small-diameter flapper valve connecting pipe, a small-diameter corrugated pipe and a small-diameter flapper valve, wherein an air inlet of the small-diameter flapper valve is connected with an air outlet of the small dust removal device, an air outlet of the small-diameter flapper valve is connected with one end of the small-diameter flapper valve connecting pipe through the small-diameter corrugated pipe, and the other end of the small-diameter flapper valve connecting pipe is connected with an air inlet of the slide valve pump.
The small-diameter baffle valve comprises a small-diameter baffle valve body and a small-diameter baffle valve cylinder, wherein the small-diameter baffle valve cylinder is arranged on a small-diameter baffle valve upper cover at the top of the small-diameter baffle valve body and used for opening and closing the small-diameter baffle valve, a small-diameter baffle valve stroke switch is arranged at the upper end of a cylinder body of the small-diameter baffle valve cylinder, the small-diameter baffle valve cylinder is provided with a small-diameter baffle valve top cylinder rod in-out pressing plate, and the small-diameter baffle valve top cylinder rod in-out pressing plate is matched with the small-diameter baffle valve stroke switch to limit the extension stroke of the small-diameter baffle valve cylinder.
The big dust collector has two outlet pipes, and two outlet pipes are connected with the air inlets of two lobe pumps respectively through one-level filtration exhaust pipe, the lobe pump passes through the lobe pump support and supports.
The utility model discloses an advantage does with positive effect: the utility model provides a vacuum furnace vacuum system, simple structure, convenient to use, longe-lived, it is good to manage to find time the performance, can extract the stove interior air fast and glue or lipid material, reduces the harm to the vacuum pump, improves the life of vacuum pump, has improved work efficiency greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of the middle and large dust removing device of the present invention;
FIG. 4 is a schematic structural view of a medium-diameter and large-diameter flapper valve of the present invention;
FIG. 5 is a schematic structural view of a middle straight tube according to the present invention;
FIG. 6 is a schematic structural view of a Roots pump exhaust pipe according to the present invention;
FIG. 7 is a schematic structural view of a middle and small dust removing device of the present invention;
FIG. 8 is a schematic structural view of a middle and small diameter flapper valve of the present invention;
fig. 9 is a schematic structural diagram of the middle and small diameter flapper valve adapter of the present invention.
In the figure: 1 is a slide valve pump, 2 is a small-diameter connecting pipe, 3 is a small-diameter corrugated pipe, 4 is a small-diameter flapper valve, 5 is a large-diameter flapper valve, 6 is a large-diameter corrugated pipe, 7 is a large dust removal device, 71 is an air inlet pipe, 72 is an air outlet pipe, 73 is a large dust removal device supporting leg, 8 is a small dust removal device, 9 is a Roots pump exhaust pipe, 10 is a Roots pump exhaust pipe support, 11 is a straight pipe, 12 is a Roots pump, 13 is a Roots pump support, 14 is a small-diameter flapper valve top cylinder rod in-out pressing plate, 15 is a small-diameter flapper valve cylinder, 16 is a small-diameter flapper valve stroke switch, 17 is a small-diameter flapper valve upper cover, 18 is a small-diameter flapper valve body, 19 is an exhaust connecting pipe, 20 is a blind plate, 21 is an air inlet connecting pipe, 22 is an exhaust pipe cylinder, 23 is a small-diameter upper connecting pipe, 24 is a small-diameter straight pipe, 25 is a, 27 is a small-diameter baffle valve side connecting pipe, 28 is a small dust removal device upper connecting pipe, 29 is a small dust removal device side connecting pipe, 30 is an upper cylinder body, 31 is a hook-shaped bolt, 32 is a lower cylinder body, 33 is a small dust removal device supporting leg, 34 is a large-diameter baffle valve top cylinder rod inlet and outlet pressing plate, 35 is a large-diameter baffle valve cylinder, 36 is a large-diameter baffle valve stroke switch, 37 is a large-diameter baffle valve upper cover, 38 is a large-diameter baffle valve body, 39 is a large-diameter baffle valve lower connecting pipe, 40 is a large-diameter baffle valve side connecting pipe, 41 is an upper flange, 42 is a loose flange, 43 is a straight pipe body, and 44 is a lower flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the utility model provides a pair of vacuum furnace vacuum system, including slide valve pump 1, one-level filtration exhaust pipe, second grade filtration exhaust pipe, big dust collector 7, little dust collector 8, lobe pump blast pipe 9 and lobe pump 12, wherein the intake pipe 71 of big dust collector 7 is taken over through bolted connection with the vacuum of vacuum furnace, and is sealed through the sealing washer. Big dust collector 7 has one or more outlet duct 72, and each outlet duct 72 is connected with the air inlet of lobe pump 12 through one-level filtration exhaust pipe, and the gas vent of lobe pump 12 is connected with the air inlet of lobe pump blast pipe 9, is equipped with a plurality of gas vents on the lobe pump blast pipe 9, and is connected with the air inlet of a plurality of little dust collector 8 respectively through the pipeline, and the gas vent of little dust collector 8 passes through the second grade and filters exhaust pipe to be connected with slide valve pump 1.
Further, the roots pump 12 is supported by a roots pump bracket 13, and the roots pump exhaust pipe 9 is supported by a roots pump exhaust pipe bracket 10.
As shown in figure 1, the primary filtering exhaust pipeline comprises a large-diameter corrugated pipe 6, a straight pipe 11 and a large-diameter flapper valve 5 connected between the large-diameter corrugated pipe 6 and the straight pipe 11, wherein the lower end of the straight pipe 11 is connected with an air inlet of a Roots pump 12 through a bolt, the upper end of the straight pipe is connected with an air outlet of the large-diameter flapper valve 5, the air inlet of the large-diameter flapper valve 5 is connected with one end of the large-diameter corrugated pipe 6, and the other end of the large-diameter corrugated pipe 6 is connected with an air outlet pipe 72 of a large dust. The bottom of the large dust catcher 7 is provided with large dust catcher legs 73, as shown in fig. 3.
As shown in fig. 1, the secondary filtering exhaust pipeline comprises a small-diameter flapper valve adapter 2, a small-diameter corrugated pipe 3 and a small-diameter flapper valve 4, wherein an air inlet of the small-diameter flapper valve 4 is connected with an air outlet of a small dust removal device 8, an air outlet of the small-diameter flapper valve 4 is connected with one end of the small-diameter flapper valve adapter 2 through the small-diameter corrugated pipe 3, and the other end of the small-diameter flapper valve adapter 2 is connected with an air inlet of a slide valve pump 1.
As shown in FIG. 4, the large diameter flapper valve 5 includes a large diameter flapper valve body 38 and a large diameter flapper valve cylinder 35, the top of the large diameter flapper valve body 38 being provided with a large diameter flapper valve upper cover 37, and the large diameter flapper valve cylinder 35 being provided on the large diameter flapper valve upper cover 37 for opening or closing the large diameter flapper valve 5. The upper end of the cylinder body of the large-diameter flapper valve cylinder 35 is provided with a large-diameter flapper valve stroke switch 36, the large-diameter flapper valve cylinder 35 is provided with a large-diameter flapper valve top cylinder rod in-out pressing plate 34, and the large-diameter flapper valve top cylinder rod in-out pressing plate 34 is matched with the large-diameter flapper valve stroke switch 36 to limit the extension stroke of the large-diameter flapper valve cylinder 35. The side air inlet of the large-diameter baffle valve body 38 is provided with a large-diameter baffle valve side connecting pipe 40, and the bottom air outlet is provided with a large-diameter baffle valve lower connecting pipe 39. The large-diameter flapper valve side connection pipe 40 is connected with the large-diameter corrugated pipe 6, and the large-diameter flapper valve lower connection pipe 39 is connected with the straight pipe 11.
The large diameter flapper valve cylinder 35 ensures that the attached large diameter flapper valve top cylinder rod in-out pressure plate 34 can press against the top of the large diameter flapper valve travel switch 36 in the return stroke state.
As shown in FIG. 5, the straight pipe 11 comprises a straight pipe body 43, an upper flange 41 and a lower flange 44 which are fixedly connected with two ends of the straight pipe body 43, the lower flange 44 is fixedly connected with an air inlet of the Roots pump 12 through bolts, the upper flange 41 is fixedly connected with a large-diameter flapper valve lower connecting pipe 39 of the large-diameter flapper valve 5, a loop flange 42 is sleeved on the outer side of the upper flange 41 and is positioned through a spigot, and the loop flange 42 is fixedly connected with the large-diameter flapper valve lower connecting pipe 39 through bolts, so that the effects of convenient installation and disassembly are achieved.
Furthermore, the upper flange 41 is continuously welded with one end of the straight tube body 43, the lower flange 44 is continuously welded with the other end of the straight tube body 43, the end faces of the upper flange 41 and the lower flange 44 are parallel after welding, and the pressure is 0.4MPa after welding.
As shown in fig. 6, the roots pump discharge pipe 9 includes a roots pump discharge pipe cylinder 22 and blind plates 20 snap-coupled to both ends of the roots pump discharge pipe cylinder 22 by hook bolts, and a seal ring is interposed between the blind plates 20 and the roots pump discharge pipe cylinder 22. One or more air inlets are arranged on the exhaust pipe barrel 22 of the roots pump, an air inlet connecting pipe 21 is welded at each air inlet, a plurality of air outlets are arranged at intervals along the axial direction, an exhaust connecting pipe 19 is welded at each air outlet, and the air inlet connecting pipe 21 is connected with the exhaust port of the roots pump 12.
Further, the diameter of the intake adapter 21 is larger than the diameter of the exhaust adapter 19.
As shown in fig. 7, the small dust collector 8 is a split structure, and includes an upper cylinder 30 and a lower cylinder 32 detachably connected by hook bolts, wherein the bottom of the lower cylinder 32 is provided with a small dust collector leg 33, the side wall of the upper cylinder 30 is provided with a small dust collector side connection pipe 29 connected with the air inlet, and the top is provided with a small dust collector upper connection pipe 28 connected with the air outlet. The small dust collector side connecting pipe 29 is hermetically connected with the exhaust connecting pipe 19 of the Roots pump exhaust pipe 9 through a bolt.
Further, a side connecting pipe 29 of the small dust removing device and an upper connecting pipe 28 of the small dust removing device are welded on the upper cylinder 30, and the upper cylinder 30 and the lower cylinder 32 are connected by a hook-shaped bolt 31, so that the vacuum degree in the small dust removing device is ensured.
Further, three small dust collector legs 33 are connected with the lower cylinder 32 through bolts, and the included angle between every two adjacent small dust collector legs 33 is 120 degrees.
As shown in FIG. 8, the small diameter flapper valve 4 includes a small diameter flapper valve body 18 and a small diameter flapper valve cylinder 15, wherein the small diameter flapper valve cylinder 15 is disposed on a small diameter flapper valve upper cover 17 at the top of the small diameter flapper valve body 18 for opening and closing the small diameter flapper valve 4, a small diameter flapper valve stroke switch 16 is disposed at the upper end of the cylinder body of the small diameter flapper valve cylinder 15, and the small diameter flapper valve cylinder 15 is provided with a small diameter flapper valve top cylinder rod in-out pressure plate 14. Under the return state of the small-diameter flapper valve cylinder 15, the cylinder rod in-out pressing plate 14 at the top of the small-diameter flapper valve can be pressed to the top of the small-diameter flapper valve stroke switch 16, so that the purpose of limiting the extension stroke of the small-diameter flapper valve cylinder 15 by the cooperation of the cylinder rod in-out pressing plate 14 at the top of the small-diameter flapper valve and the small-diameter flapper valve stroke switch 16 is achieved. The bottom air inlet of the valve body 18 of the small-diameter flapper valve is connected with a lower connecting pipe 26 of the small-diameter flapper valve, and the lower connecting pipe 26 of the small-diameter flapper valve is hermetically connected with an upper connecting pipe 28 of a small dust removing device through a bolt. The side exhaust port of the small-diameter flapper valve body 18 is connected with a small-diameter flapper valve side connection pipe 27, and the small-diameter flapper valve side connection pipe 27 is hermetically connected with the small-diameter bellows 3 by bolts.
As shown in fig. 9, the small-diameter flapper valve nozzle 2 includes a small-diameter straight tube 24, and a small-diameter upper nozzle 23 and a small-diameter lower nozzle 25 connected to both ends of the small-diameter straight tube 24, wherein the small-diameter upper nozzle 23 is hermetically connected to the small-diameter bellows 3 by a bolt, and the small-diameter lower nozzle 25 is hermetically connected to the air inlet of the slide valve pump 1 by a bolt.
Further, the small-diameter upper connecting pipe 23 and the small-diameter straight pipe 24 are continuously welded, the small-diameter lower connecting pipe 25 and the small-diameter straight pipe 24 are continuously welded, and after welding, the pressure is 0.4Mpa, and leakage cannot occur within half an hour.
In the embodiment of the invention, the large dust removing device 7 and the small dust removing device 8 are both bag-type dust removing devices, the large dust removing device 7 is provided with two air outlet pipes 72, and the two air outlet pipes 72 are respectively connected with the air inlets of the two roots pumps 12 through a primary filtering exhaust pipeline. The Roots pump exhaust pipe 9 has two intake connecting pipes 21 and four exhaust connecting pipes 19, and the four exhaust connecting pipes 19 are respectively connected with the four small dust removal devices 8. The diameters of the small-diameter flapper valve adapter 2, the small-diameter corrugated pipe 3 and the small-diameter flapper valve 4 are phi 150 mm. The diameters of the large-diameter corrugated pipe 6, the straight pipe 11 and the large-diameter baffle valve 5 are all phi 250mm, the diameter of an air inlet connecting pipe 21 of the exhaust pipe 9 of the Roots pump is phi 200mm, and the diameter of an exhaust connecting pipe 19 is phi 150 mm.
The utility model discloses a theory of operation does:
the vacuum system of the vacuum furnace provided by the invention comprises two roots pumps 12, four slide valve pumps 1, a baffle valve, a dust remover and the like, wherein the roots pumps 12 and the slide valve pumps 1 are used in series, and an air inlet pipe 71 of a large dust removing device 7 is connected with a vacuum connecting pipe of the vacuum furnace. When the vacuum furnace is in operation, the slide valve pump 1 is firstly opened, the small-diameter baffle valve 4 and the large-diameter baffle valve 5 are opened, the vacuum furnace is integrally evacuated, the rotor of the roots pump can rotate along with airflow, and when the rotor of the roots pump stops rotating, the roots pump 12 is opened to improve the air extraction capacity and reduce the rough extraction time. When the impurities in the furnace are pumped out by the vacuum system, the impurities are firstly cooled by the water cooling system in the large dust removal device 7, so that the colloid or lipid impurities in the impurities can be separated, large particles directly fall into the bottom of the dust removal device, then the gas is filtered by a cloth bag and the like, enters the roots pump 12 through the large-diameter baffle valve 5 and the straight pipe 11, is precipitated by the roots pump exhaust pipe 9 and is secondarily filtered by the small dust removal device 8, and finally is pumped out by the slide valve pump 1.
Vacuum system is the indispensable part in the vacuum furnace equipment, and the vacuum furnace mainly evacuates by the vacuum pump among the vacuum system, and two lobe pumps and four sliding valve pumps establish ties and use, can extract the interior air of vacuum furnace fast to work efficiency has been improved, and wherein lobe pump pumping speed is big, and the lobe pump blast pipe is equipped with to the rear portion, and gas obtains buffering and sediment through the lobe pump blast pipe, and impurity can be cleared up from lobe pump blast pipe both sides. And the gas in the vacuum furnace belongs to high-temperature gas, the higher result of use that can influence the pump of impurity content, long-term use can cause the damage to the pump, so install big dust collector and little dust collector and can play dual filtration and refrigerated effect, the use of vacuum pump has been guaranteed, the installation of stainless steel corrugated pipe has reduced mechanical shock and noise simultaneously, and compensated assembly error, guarantee vacuum system's use, improve the life of each part of vacuum system, the cost is reduced, and this vacuum system compact structure, area is little, the pumping speed ability is big.
The utility model discloses not only can guarantee vacuum system's operational environment, improve life, reduce cost of maintenance, the above-mentioned can be faster get rid of the stove in glue or impurity, guarantee the availability factor of vacuum pump.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (10)
1. A vacuum system of a vacuum furnace is characterized by comprising a slide valve pump (1), a primary filtering exhaust pipeline, a secondary filtering exhaust pipeline, a large dust removal device (7), a small dust removal device (8), a Roots pump exhaust pipe (9) and a Roots pump (12), wherein the air inlet pipe (71) of the large dust removing device (7) is connected with the vacuum furnace, the large dust removing device (7) is provided with one or more air outlet pipes (72), each air outlet pipe (72) is connected with the air inlet of the roots pump (12) through a primary filtering exhaust pipeline, the exhaust port of the roots pump (12) is connected with the air inlet of the roots pump exhaust pipe (9), a plurality of exhaust ports are arranged on the exhaust pipe (9) of the Roots pump and are respectively connected with the air inlets of a plurality of small dust removing devices (8) through pipelines, and an exhaust port of the small dust removal device (8) is connected with the slide valve pump (1) through a secondary filtering exhaust pipeline.
2. The vacuum furnace vacuum system as claimed in claim 1, wherein the primary filtering exhaust pipeline comprises a large-diameter corrugated pipe (6), a straight pipe (11) and a large-diameter baffle valve (5) connected between the large-diameter corrugated pipe (6) and the straight pipe (11), wherein the lower end of the straight pipe (11) is connected with an air inlet of the roots pump (12), the upper end of the straight pipe is connected with an exhaust port of the large-diameter baffle valve (5), the air inlet of the large-diameter baffle valve (5) is connected with one end of the large-diameter corrugated pipe (6), and the other end of the large-diameter corrugated pipe (6) is connected with an air outlet pipe (72) of the large dust removal device (7).
3. The vacuum furnace vacuum system according to claim 2, wherein the large diameter flapper valve (5) comprises a large diameter flapper valve body (38) and a large diameter flapper valve cylinder (35), the large diameter flapper valve cylinder (35) is arranged on a large diameter flapper valve upper cover (37) at the top of the large diameter flapper valve body (38) for opening or closing the large diameter flapper valve (5), a large diameter flapper valve stroke switch (36) is arranged at the upper end of the cylinder body of the large diameter flapper valve cylinder (35), the large diameter flapper valve cylinder (35) is provided with a large diameter flapper valve top cylinder rod in-out pressure plate (34), the large diameter flapper valve top cylinder rod in-out pressure plate (34) is matched with the large diameter flapper valve stroke switch (36) to limit the extension stroke of the large diameter flapper valve cylinder (35), a large diameter flapper valve side adapter (40) is arranged at the side air inlet of the large diameter flapper valve body (38), a large-diameter baffle valve lower connecting pipe (39) is arranged at the air outlet at the bottom.
4. The vacuum furnace vacuum system as claimed in claim 2, wherein the straight pipe (11) comprises a straight pipe body (43) and an upper flange (41) and a lower flange (44) which are fixedly connected to two ends of the straight pipe body (43), the lower flange (44) is fixedly connected with an air inlet of the roots pump (12) through a bolt, the upper flange (41) is fixedly connected with an air outlet of the large-diameter baffle valve (5), a loop flange (42) is sleeved on the outer side of the upper flange (41) and is positioned through a spigot, and the loop flange (42) is fixedly connected with the air outlet of the large-diameter baffle valve (5) through a bolt.
5. The vacuum furnace vacuum system as claimed in claim 1, wherein the roots pump exhaust pipe (9) is supported by a roots pump exhaust pipe support (10), the roots pump exhaust pipe (9) comprises a roots pump exhaust pipe cylinder (22) and blind plates (20) which are buckled and connected with two ends of the roots pump exhaust pipe cylinder (22), one or more air inlets are arranged on the roots pump exhaust pipe cylinder (22), each air inlet is respectively connected with an air inlet connecting pipe (21), a plurality of air outlets are arranged at intervals along the axial direction, and each air outlet is respectively connected with an exhaust connecting pipe (19).
6. Vacuum furnace vacuum system according to claim 5, characterized in that the diameter of the air inlet connection (21) is larger than the diameter of the air outlet connection (19).
7. The vacuum furnace vacuum system as claimed in claim 1, wherein the small dust collector (8) is a split structure and comprises an upper cylinder (30) and a lower cylinder (32) which are detachably connected, wherein the bottom of the lower cylinder (32) is provided with small dust collector legs (33), the side wall of the upper cylinder (30) is provided with a small dust collector side connecting pipe (29) connected with the air inlet, and the top of the upper cylinder is provided with a small dust collector upper connecting pipe (28) connected with the air outlet.
8. The vacuum furnace vacuum system according to claim 1, wherein the secondary filtering exhaust pipeline comprises a small-diameter flapper valve adapter (2), a small-diameter bellows (3) and a small-diameter flapper valve (4), wherein an air inlet of the small-diameter flapper valve (4) is connected with an air outlet of the small dust removing device (8), an air outlet of the small-diameter flapper valve (4) is connected with one end of the small-diameter flapper valve adapter (2) through the small-diameter bellows (3), and the other end of the small-diameter flapper valve adapter (2) is connected with an air inlet of the slide valve pump (1).
9. The vacuum furnace vacuum system according to claim 8, wherein the small diameter flapper valve (4) comprises a small diameter flapper valve body (18) and a small diameter flapper valve cylinder (15), wherein the small diameter flapper valve cylinder (15) is arranged on a small diameter flapper valve upper cover (17) at the top of the small diameter flapper valve body (18) for opening and closing the small diameter flapper valve (4), the upper end of the cylinder body of the small diameter flapper valve cylinder (15) is provided with a small diameter flapper valve stroke switch (16), the small diameter flapper valve cylinder (15) is provided with a small diameter flapper valve top cylinder rod in-out pressure plate (14), and the small diameter flapper valve top cylinder rod in-out pressure plate (14) is matched with the small diameter flapper valve stroke switch (16) to limit the extension stroke of the small diameter flapper valve cylinder (15).
10. The vacuum furnace vacuum system as claimed in claim 1, characterized in that the large dust removing device (7) is provided with two air outlet pipes (72), the two air outlet pipes (72) are respectively connected with the air inlets of two roots pumps (12) through primary filtering exhaust pipelines, and the roots pumps (12) are supported by a roots pump bracket (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921732195.3U CN211060622U (en) | 2019-10-16 | 2019-10-16 | Vacuum furnace vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921732195.3U CN211060622U (en) | 2019-10-16 | 2019-10-16 | Vacuum furnace vacuum system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211060622U true CN211060622U (en) | 2020-07-21 |
Family
ID=71595684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921732195.3U Active CN211060622U (en) | 2019-10-16 | 2019-10-16 | Vacuum furnace vacuum system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211060622U (en) |
-
2019
- 2019-10-16 CN CN201921732195.3U patent/CN211060622U/en active Active
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