Vortex vacuum pump and use method thereof

Abstract

The invention relates to a vortex vacuum pump and a using method thereof.The vortex vacuum pump comprises a shell and a shell cover, the shell cover is detachably installed on the shell, a first motor is installed in the shell, a crankshaft is installed at the output end of the first motor and connected with a movable vortex base, a guide frame is installed in the shell, and the guide frame is connected with the movable vortex base. A guide frame is arranged on the shell cover, the guide frame and the movable vortex base are installed in a sliding mode, a friction steel sheet is installed between the guide frame and the movable vortex base, an exhaust port and an air inlet are formed in the shell cover, and a static vortex base is installed in the shell cover. Along with continuous abrasion and consumption of a vortex friction block and a vortex friction plate, a second motor works to drive a driving tooth to rotate, then a meshed driven tooth is driven to rotate, rotation of a threaded cylinder is achieved, a threaded lead screw in threaded connection is driven to move, then a static vortex base is driven to move, and the position of the static vortex base is adjusted; and a tight fit object gap between the static scroll seat and the movable scroll seat is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pumps, and in particular to a vortex vacuum pump and a method for using the same. Background Art

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum.

[0003] When the existing vortex vacuum pump is in use, the vortex protrusions of the static vortex seat and the movable vortex seat are constantly in contact and friction with the vortex friction plate, which causes wear of the vortex protrusions and the vortex friction plate. Therefore, the static vortex seat and the movable vortex seat need to be replaced as a whole, and the replacement cost is high. In addition, as the vortex protrusions and the vortex friction plate continue to rub, the gap between the two becomes larger and larger, which makes it impossible to achieve vacuum extraction. At the same time, when the vortex vacuum pump is working, air compression generates heat, and the vortex protrusions and the vortex friction plate rub against each other to generate heat, and a large amount of heat accumulates, making it impossible to achieve long-term continuous operation of the vortex vacuum pump, and it is easy to cause damage to the internal components of the vortex vacuum pump. Summary of the invention

[0004] The problem solved by the present invention is to provide a vortex vacuum pump and a method for using the same, which solves the problem that when the existing vortex vacuum pump is in use, the vortex protrusions of the static vortex seat and the movable vortex seat are constantly in contact and friction with the vortex friction plate, which leads to wear of the vortex protrusions and the vortex friction plate. Therefore, the static vortex seat and the movable vortex seat need to be replaced as a whole, which has a high replacement cost. Moreover, as the vortex protrusions and the vortex friction plate are constantly rubbed, the gap between the two becomes larger and larger, which makes it impossible to achieve vacuum extraction. At the same time, when the vortex vacuum pump is working, air compression generates heat, and the vortex protrusions and the vortex friction plate rub against each other to generate heat, so a large amount of heat accumulates, making it impossible to achieve long-term continuous operation of the vortex vacuum pump, and it is easy to cause damage to the internal components of the vortex vacuum pump.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A scroll vacuum pump comprises a housing and a housing cover, wherein the housing is detachably mounted with the housing cover, a first motor is mounted inside the housing, a crankshaft is mounted at an output end of the first motor, and the crankshaft is connected to a movable scroll seat, a guide frame is mounted inside the housing, and the guide frame and the movable scroll seat are slidably mounted, a friction steel sheet is mounted between the guide frame and the movable scroll seat, an exhaust port and an air inlet are arranged on the housing cover, and a static scroll seat is mounted inside the housing cover;

[0007] The movable scroll seat and the stationary scroll seat are arranged alternately, and the movable scroll seat moves around the center of the stationary scroll seat under the drive of the crankshaft. The movable scroll seat and the stationary scroll seat both include a scroll plate, a vortex protrusion and a vortex friction plate are installed on the scroll plate, a vortex friction block is installed on the vortex protrusion, and an exhaust hole connected to the exhaust port is opened at the center of the stationary scroll seat.

[0008] Preferably, a first inner cavity is opened inside the vortex disk of the stationary vortex seat, a vortex-shaped second inner cavity is opened inside the vortex protrusion of the stationary vortex seat, and connecting holes respectively connected to the two ends of the second inner cavity of the vortex protrusion are opened on the vortex disk.

[0009] Preferably, an inner sliding tube connected to the first inner cavity is symmetrically installed on the vortex disk of the static vortex seat, an outer solid tube is fixedly installed on the shell cover, and the inner sliding tube and the outer solid tube are slidably installed, and a connecting water nozzle is installed at the outer end of the outer solid tube.

[0010] Preferably, a plurality of limiting grooves are arranged at equal intervals on the vortex protrusion, a plurality of limiting protrusions are arranged on the bottom side of the vortex friction block, and the limiting protrusions are engaged with the limiting grooves, and the vortex friction block and the vortex protrusions are connected by bolts.

[0011] Preferably, a gear housing is installed on the outside of the housing cover, and a threaded cylinder is installed on the equiangular bearing inside the gear housing, a threaded screw is installed through the thread inside the threaded cylinder, and a polygonal shaft is elastically installed on the end of the threaded screw, and the polygonal shaft is connected to the vortex disk of the static vortex seat.

[0012] Preferably, a second motor is installed on the outside of the gear housing, a driving tooth is installed on the output end of the second motor, and a driven tooth is sleeved on the outside of the threaded barrel, and the driven teeth are meshed with the driving teeth.

[0013] Preferably, a polygonal groove is provided at the end of the threaded screw rod, and the polygonal shaft is slidably installed in the polygonal groove.

[0014] Preferably, a pressure sensor is installed in the polygonal groove, and a slide plate is installed on the contact of the pressure sensor, and a spring is installed between the slide plate and the polygonal shaft.

[0015] A method for using a vortex vacuum pump, the specific operating steps of the method are as follows:

[0016] Step 1: A plurality of crescent-shaped closed cavities are formed between the vortex protrusions of the movable scroll seat and the fixed scroll seat. The first motor drives the crankshaft to rotate, thereby driving the connected movable scroll seat to rotate, and through the guidance of the guide frame, drives the movable scroll seat to move around the center of the fixed scroll seat. The vortex protrusions of the movable scroll seat and the fixed scroll seat are in continuous contact, and the contact point moves along the vortex protrusion to realize suction, compression and exhaust. The gas enters the pump cavity through the air inlet and is discharged from the exhaust port through the exhaust hole;

[0017] Step 2: During the rotation of the movable scroll seat, the vortex friction block on the vortex protrusion of the movable scroll seat is constantly in contact and friction with the vortex friction plate of the fixed scroll seat, and the vortex friction block on the vortex protrusion of the fixed scroll seat is constantly in contact and friction with the vortex friction plate of the movable scroll seat. At this time, water circulation in the first inner cavity, the connecting hole and the second inner cavity is realized by connecting the water nozzle, and the heat of the vortex friction plate and the vortex friction block is absorbed and transferred;

[0018] Step three: With the continuous friction between the vortex friction plate and the vortex friction block, the vortex friction plate and the vortex friction block gradually wear and produce a gap. Under the action of the spring, the vortex friction plate and the vortex friction block are always in close contact. At this time, the pressure on the pressure sensor becomes smaller, and the second motor drives the active tooth to rotate, and then drives the meshing driven tooth to rotate, realizing the rotation of the threaded barrel, driving the threaded screw connected to move, and then driving the static vortex seat to move, and adjusting the position of the static vortex seat until the pressure on the pressure sensor is normal and the second motor stops working.

[0019] The beneficial effects of the present invention are as follows: a vortex friction plate is installed on the vortex disk, a vortex friction block is installed on the vortex protrusion, and when the movable vortex seat and the static vortex seat are working, the parts that are repeatedly in contact and rub against each other are the vortex friction block and the vortex friction plate, thereby increasing the service life of the vortex vacuum pump, and only the vortex friction block and the vortex friction plate need to be replaced for continued use;

[0020] Air compression and contact friction between the vortex friction block and the vortex friction plate both generate a large amount of heat. The water circulation in the first inner cavity, the connecting hole and the second inner cavity is realized by connecting the water nozzle, and the heat of the vortex friction plate and the vortex friction block is absorbed and transferred, so as to cool the pump cavity in the vortex vacuum pump and ensure the continuous operation of the vortex vacuum pump.

[0021] As the vortex friction block and the vortex friction plate are constantly worn and consumed, the second motor drives the active gear to rotate, and then drives the meshing driven gear to rotate, so as to realize the rotation of the threaded barrel, drive the threaded screw connected to move, and then drive the fixed vortex seat to move, adjust the position of the fixed vortex seat, and ensure the close fit gap between the fixed vortex seat and the movable vortex seat;

[0022] Under the action of the spring, the vortex friction plate and the vortex friction block are always in close contact. The pressure change is sensed by the pressure sensor, and the displacement of the static scroll seat is accurately adjusted without disassembling or stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the first structure inside the housing of the present invention;

[0025] Figure 3 This is a schematic diagram of the second structure inside the housing of the present invention;

[0026] Figure 4 This is a schematic diagram of the third structure inside the housing of the present invention;

[0027] Figure 5 This is a schematic diagram of the first structure inside the shell cover of the present invention;

[0028] Figure 6 This is a schematic diagram of the second structure inside the shell cover of the present invention;

[0029] Figure 7 It is a cross-sectional view of the static scroll seat of the present invention;

[0030] Figure 8 This is a schematic diagram of the first installation structure of the static scroll seat of the present invention;

[0031] Fig. 9 This is a schematic diagram of the second installation structure of the static scroll seat of the present invention;

[0032] Fig.10 It is a schematic diagram of the internal structure of the threaded screw rod of the present invention.

[0033] Legend:

[0034] 1. Shell; 2. Shell cover; 3. First motor; 4. Crankshaft; 5. Moving scroll seat; 6. Guide frame; 7. Friction steel plate; 8. Exhaust port; 9. Air inlet; 10. Stationary scroll seat; 11. Scroll disk; 12. Scroll protrusion; 13. Scroll friction plate; 14. Scroll friction block; 15. Exhaust hole; 16. First inner cavity; 17. Connecting hole; 18. Second inner cavity; 19. Gear housing; 20. Second motor; 21. Active gear; 22. Threaded barrel; 23. Driven gear; 24. Threaded screw; 25. Polygonal shaft; 26. Polygonal groove; 27. Pressure sensor; 28. Slide plate; 29. ​​Spring; 30. Inner sliding tube; 31. Outer fixed tube; 32. Connect water nozzle. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Specific examples are given below.

[0037] See also Figures 1 to 10A scroll vacuum pump comprises a shell 1 and a shell cover 2, wherein the shell cover 2 is detachably mounted on the shell 1, a first motor 3 is mounted inside the shell 1, a crankshaft 4 is mounted at the output end of the first motor 3, and the crankshaft 4 is connected to a movable scroll seat 5, a guide frame 6 is mounted inside the shell 1, and the guide frame 6 and the movable scroll seat 5 are slidably mounted, a friction steel sheet 7 is mounted between the guide frame 6 and the movable scroll seat 5, an exhaust port 8 and an air inlet 9 are arranged on the shell cover 2, and a static scroll seat 10 is mounted inside the shell cover 2;

[0038] The movable scroll seat 5 and the static scroll seat 10 are arranged alternately, and the movable scroll seat 5 moves around the center of the static scroll seat 10 under the drive of the crankshaft 4. The movable scroll seat 5 and the static scroll seat 10 both include a scroll plate 11, on which a scroll protrusion 12 and a scroll friction plate 13 are installed, and a scroll friction block 14 is installed on the scroll protrusion 12. A plurality of limiting grooves are arranged at equal intervals on the scroll protrusion 12, and a plurality of limiting protrusions are arranged on the bottom side of the scroll friction block 14, and the limiting protrusions are engaged with the limiting grooves. The scroll friction block 14 and the scroll protrusion 12 are connected by bolts to increase the vortex protrusion 12 and the scroll friction plate 13. The contact area of ​​the vortex friction block 14 is increased to improve the heat exchange efficiency. An exhaust hole 15 connected to the exhaust port 8 is opened at the center of the static vortex seat 10. The vortex friction block 14 can be detachably installed on the vortex protrusion 12. When the vortex vacuum pump is working, the vortex friction plate 13 on the vortex disk 11 and the vortex friction block 14 on the vortex protrusion 12 are in contact and friction, replacing the direct contact friction between the vortex protrusion 12 and the vortex friction plate 13. At this time, the service life of the vortex vacuum pump is increased through the vortex friction plate 13, and at the same time, only the vortex friction block 14 and the vortex friction plate 13 need to be replaced for continued use;

[0039] A first inner cavity 16 is provided inside the vortex disk 11 of the static vortex seat 10, a vortex-shaped second inner cavity 18 is provided inside the vortex protrusion 12 of the static vortex seat 10, and a connecting hole 17 is provided on the vortex disk 11, which is respectively connected to the two ends of the second inner cavity 18 of the vortex protrusion 12. Water circulation in the first inner cavity 16, the connecting hole 17 and the second inner cavity 18 is realized by connecting a water nozzle 32, and the heat of the vortex friction plate 13 and the vortex friction block 14 is absorbed and transferred. An inner sliding pipe 30 connected to the first inner cavity 16 is symmetrically installed on the vortex disk 11 of the static vortex seat 10, an outer fixed pipe 31 is fixedly installed on the shell cover 2, and the inner sliding pipe 30 and the outer fixed pipe 31 are slidably installed, and a connecting water nozzle 32 is installed on the outer end of the outer fixed pipe 31, and when the static vortex seat 10 is adjusted and moved, the inner sliding pipe 30 moves in the outer fixed pipe 31, and the connection between the connecting water nozzle 32 and the first inner cavity 16 is always maintained.

[0040] A gear housing 19 is installed on the outside of the housing cover 2, and a threaded cylinder 22 is installed on the equiangular bearing in the gear housing 19. A threaded screw 24 is installed through the inner thread of the threaded cylinder 22, and a polygonal shaft 25 is elastically installed on the end of the threaded screw 24, and the polygonal shaft 25 is connected to the scroll plate 11 of the static scroll seat 10. A second motor 20 is installed on the outside of the gear housing 19, and a driving tooth 21 is installed on the output end of the second motor 20. A driven tooth 23 is sleeved on the outside of the threaded cylinder 22, and the driven teeth 23 are all meshed with the driving tooth 21. A polygonal groove 26 is provided at the end of the threaded screw 24, and the polygonal shaft 25 is slidably installed in the polygonal groove 26. A pressure sensor 27 is installed in the polygonal groove 26, and a slide plate 28 is installed on the contact of the pressure sensor 27. A spring 29 is installed between the slide plate 28 and the polygonal shaft 25. Due to the continuous friction between the vortex friction plate 13 and the vortex friction block 14, the vortex friction plate 13 and the vortex friction block 14 are gradually worn and a gap is generated. Under the action of the spring 29, the vortex friction plate 13 and the vortex friction block 14 are always in close contact. At this time, the pressure on the pressure sensor 27 becomes smaller, and the second motor 20 drives the active tooth 21 to rotate, and then drives the meshing driven tooth 23 to rotate, realizes the rotation of the threaded barrel 22, drives the threaded screw 24 connected by the thread to move, and then drives the static vortex seat 10 to move, and adjusts the position of the static vortex seat 10 until the pressure on the pressure sensor 27 is normal. The second motor 20 stops working, and the pressure change is sensed by the pressure sensor 27. The displacement of the static vortex seat 10 is accurately adjusted without disassembling or stopping the machine.

[0041] A method for using a vortex vacuum pump, the specific operating steps of the method are as follows:

[0042] Step 1: A plurality of crescent-shaped closed cavities are formed between the vortex protrusions 12 of the movable scroll seat 5 and the fixed scroll seat 10. The first motor 3 works to drive the crankshaft 4 to rotate, thereby driving the connected movable scroll seat 5 to rotate, and through the guidance of the guide frame 6, the movable scroll seat 5 is driven to move around the center of the fixed scroll seat 10. The vortex protrusions 12 of the movable scroll seat 5 and the fixed scroll seat 10 are in continuous contact, and the contact point moves along the vortex protrusion 12 to achieve suction, compression and exhaust. The gas enters the pump chamber through the air inlet 9 and is discharged from the exhaust port 8 through the exhaust hole 15;

[0043] Step 2: During the rotation of the movable scroll seat 5, the vortex friction block 14 on the vortex protrusion 12 of the movable scroll seat 5 is constantly in contact and friction with the vortex friction plate 13 of the fixed scroll seat 10, and the vortex friction block 14 on the vortex protrusion 12 of the fixed scroll seat 10 is constantly in contact and friction with the vortex friction plate 13 of the movable scroll seat 5. At this time, water circulation in the first inner cavity 16, the connecting hole 17 and the second inner cavity 18 is realized by connecting the water nozzle 32, and the heat of the vortex friction plate 13 and the vortex friction block 14 is absorbed and transferred;

[0044] Step three: With the continuous friction between the vortex friction plate 13 and the vortex friction block 14, the vortex friction plate 13 and the vortex friction block 14 are gradually worn and a gap is generated. Under the action of the spring 29, the vortex friction plate 13 and the vortex friction block 14 are always in close contact. At this time, the pressure on the pressure sensor 27 becomes smaller, and the second motor 20 drives the active tooth 21 to rotate, and then drives the meshing driven tooth 23 to rotate, realizing the rotation of the threaded barrel 22, driving the threaded screw 24 connected by the thread to move, and then drives the static vortex seat 10 to move, and adjust the position of the static vortex seat 10 until the pressure on the pressure sensor 27 is normal and the second motor 20 stops working.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A scroll vacuum pump, characterized in that: The invention comprises a shell (1) and a shell cover (2), wherein the shell cover (2) is detachably mounted on the shell (1), a first motor (3) is mounted inside the shell (1), a crankshaft (4) is mounted on the output end of the first motor (3), and the crankshaft (4) is connected to a movable scroll seat (5), a guide frame (6) is mounted inside the shell (1), and the guide frame (6) and the movable scroll seat (5) are slidably mounted, a friction steel sheet (7) is mounted between the guide frame (6) and the movable scroll seat (5), an exhaust port (8) and an air inlet (9) are arranged on the shell cover (2), and a static scroll seat (10) is mounted inside the shell cover (2); The movable scroll seat (5) and the stationary scroll seat (10) are arranged alternately, and the movable scroll seat (5) moves around the center of the stationary scroll seat (10) under the drive of the crankshaft (4). The movable scroll seat (5) and the stationary scroll seat (10) both include a scroll plate (11), a scroll protrusion (12) and a scroll friction plate (13) are installed on the scroll plate (11), a scroll friction block (14) is installed on the scroll protrusion (12), and an exhaust hole (15) connected to the exhaust port (8) is opened at the center of the stationary scroll seat (10).

2. A scroll vacuum pump according to claim 1, characterized in that: A first inner cavity (16) is provided inside the vortex disk (11) of the static vortex seat (10), a vortex-shaped second inner cavity (18) is provided inside the vortex protrusion (12) of the static vortex seat (10), and connecting holes (17) are provided on the vortex disk (11) that are respectively connected to the two ends of the second inner cavity (18) of the vortex protrusion (12).

3. A scroll vacuum pump according to claim 2, characterized in that: An inner sliding pipe (30) communicating with the first inner cavity (16) is symmetrically mounted on the scroll plate (11) of the static scroll seat (10), an outer solid pipe (31) is fixedly mounted on the shell cover (2), and the inner sliding pipe (30) and the outer solid pipe (31) are slidably mounted, and a connecting water nozzle (32) is mounted on the outer end of the outer solid pipe (31).

4. A scroll vacuum pump according to claim 3, characterized in that: The vortex protrusion (12) is provided with a plurality of limiting grooves at equal intervals, the bottom side of the vortex friction block (14) is provided with a plurality of limiting protrusions, and the limiting protrusions are engaged with the limiting grooves, and the vortex friction block (14) and the vortex protrusion (12) are connected by bolts.

5. A scroll vacuum pump according to claim 4, characterized in that: A gear housing (19) is installed on the outer side of the housing cover (2), a threaded cylinder (22) is installed in an equiangular bearing inside the gear housing (19), a threaded screw (24) is installed through the inner thread of the threaded cylinder (22), and a polygonal shaft (25) is elastically installed at the end of the threaded screw (24), and the polygonal shaft (25) is connected to the scroll plate (11) of the static scroll seat (10).

6. A scroll vacuum pump according to claim 5, characterized in that: A second motor (20) is installed on the outside of the gear housing (19), a driving tooth (21) is installed on the output end of the second motor (20), and a driven tooth (23) is sleeved on the outside of the threaded barrel (22), and the driven tooth (23) is meshed with the driving tooth (21).

7. A scroll vacuum pump according to claim 6, characterized in that: The end of the threaded screw rod (24) is provided with a polygonal groove (26), and the polygonal shaft (25) is slidably mounted in the polygonal groove (26).

8. A scroll vacuum pump according to claim 7, characterized in that: A pressure sensor (27) is installed in the polygonal groove (26), and a contact of the pressure sensor (27) is installed with a slide plate (28), and a spring (29) is installed between the slide plate (28) and the polygonal shaft (25).

9. The method for using a scroll vacuum pump according to claim 8, characterized in that: The specific steps of this method are as follows: Step 1: A plurality of crescent-shaped closed cavities are formed between the vortex protrusions (12) of the movable scroll seat (5) and the fixed scroll seat (10), the first motor (3) works to drive the crankshaft (4) to rotate, thereby driving the connected movable scroll seat (5) to rotate, and through the guidance of the guide frame (6), the movable scroll seat (5) is driven to move around the center of the fixed scroll seat (10), the vortex protrusions (12) of the movable scroll seat (5) and the fixed scroll seat (10) are constantly in contact, and the contact point moves along the vortex protrusions (12) to achieve air intake, compression and exhaust, and the gas enters the pump chamber through the air inlet (9) and is discharged from the exhaust port (8) through the exhaust hole (15); Step 2: During the rotation of the movable scroll seat (5), the vortex friction block (14) on the vortex protrusion (12) of the movable scroll seat (5) continuously contacts and rubs with the vortex friction plate (13) of the fixed scroll seat (10), and the vortex friction block (14) on the vortex protrusion (12) of the fixed scroll seat (10) continuously contacts and rubs with the vortex friction plate (13) of the movable scroll seat (5). At this time, water circulation in the first inner cavity (16), the connecting hole (17) and the second inner cavity (18) is realized by connecting the water nozzle (32), and the heat of the vortex friction plate (13) and the vortex friction block (14) is absorbed and transferred; Step 3: As the vortex friction plate (13) and the vortex friction block (14) continue to rub, the vortex friction plate (13) and the vortex friction block (14) gradually wear and produce a gap. Under the action of the spring (29), the vortex friction plate (13) and the vortex friction block (14) are always in contact with each other. At this time, the pressure on the pressure sensor (27) becomes smaller, and the second motor (20) drives the active tooth (21) to rotate, thereby driving the meshing driven tooth (23) to rotate, realizing the rotation of the threaded cylinder (22), driving the threaded screw (24) connected to the thread to move, and then driving the static vortex seat (10) to move, and adjusting the position of the static vortex seat (10) until the pressure on the pressure sensor (27) is normal and the second motor (20) stops working.

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