CN116146495B - Oil injection screw vacuum pump - Google Patents
Oil injection screw vacuum pump Download PDFInfo
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- CN116146495B CN116146495B CN202310072404.0A CN202310072404A CN116146495B CN 116146495 B CN116146495 B CN 116146495B CN 202310072404 A CN202310072404 A CN 202310072404A CN 116146495 B CN116146495 B CN 116146495B
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- vacuum pump
- main body
- locking
- spiral
- base platform
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/16—Devices holding the wing by magnetic or electromagnetic attraction
- E05C19/161—Devices holding the wing by magnetic or electromagnetic attraction magnetic gaskets
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B11/00—Means for allowing passage through fences, barriers or the like, e.g. stiles
- E06B11/02—Gates; Doors
- E06B11/022—Gates; Doors characterised by the manner of movement
- E06B11/027—Gates; Doors characterised by the manner of movement where the gate rotates around a horizontal axis parallel to the plane of the gate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The application relates to the technical field of vacuum pumps, and discloses an oil injection screw type vacuum pump, which comprises a main body frame, a vacuum pump main body arranged on the top surface of the main body frame, and a noise reduction mechanism arranged below the main body frame and used for reducing noise of the vacuum pump main body, wherein the noise reduction mechanism comprises a base platform, a plurality of spiral straight rods rotatably arranged on the top of the base platform, a spiral sliding block spirally connected to the peripheral side of the spiral straight rods, a hinged straight rod commonly hinged between the spiral sliding block and the main body frame, a plurality of driving racks which slide on the top of the base platform through linear rails, and a driving air bag arranged at the end part of the driving racks far away from the spiral straight rods; the end of each spiral straight rod far away from each other is coaxially provided with a driving gear, and a plurality of driving gears are respectively meshed with a plurality of driving racks. The application has the effect of improving noise generated by the oil injection screw vacuum pump due to vibration of the oil injection screw vacuum pump.
Description
Technical Field
The application relates to the technical field of vacuum pumps, in particular to an oil injection screw type vacuum pump.
Background
The vacuum pump is widely applied to the fields of electronics, printing and papermaking, chemical medicine, food processing, packaging and the like. Common vacuum pumps include dry screw vacuum pumps, water ring pumps, reciprocating pumps, slide valve pumps, rotary vane pumps, and the like. The oil injection screw vacuum pump injects oil to the engine cavity of the oil injection screw vacuum pump host through the oil-gas separation device, so that the oil injection screw vacuum pump can realize variable-frequency vacuumizing, and the oil injection screw vacuum pump is suitable for various working conditions.
The Chinese patent publication No. CN108869296A discloses an oil injection screw type vacuum pump, which comprises a frame, an oil injection screw type vacuum pump host, an oil-gas separation device, a power device and a cooler device, wherein the oil injection screw type vacuum pump host, the oil-gas separation device, the power device and the cooler device are arranged on the frame, an air channel system for connecting with a vacuumizing container is connected to an air inlet of the oil injection screw type vacuum pump host, an output shaft of the power device is connected with an input shaft of the oil injection screw type vacuum pump host through a coupler, the oil-gas separation device is connected with the oil injection screw type vacuum pump host through an oil channel system, the cooler device is used for cooling the oil injection screw type vacuum pump host, a vent pipe is fixedly arranged on the oil injection screw type vacuum pump host, one end of the vent pipe is communicated with a cavity of the oil injection screw type vacuum pump host, and the other end of the vent pipe is communicated with an inner cavity of the oil-gas separation device and is positioned above an oil liquid level of the oil-gas separation device.
Aiming at the related technology, the oil injection screw vacuum pump can generate non-intermittent vibration in the normal working process, and the frame and the ground as well as the frame and the oil injection screw vacuum pump host are not provided with vibration reducing mechanisms, so that the oil injection screw vacuum pump generates noise.
Disclosure of Invention
In order to solve the problem that noise is generated by vibration of the oil injection screw type vacuum pump, the application provides the oil injection screw type vacuum pump.
The application provides an oil injection screw vacuum pump which adopts the following technical scheme:
the oil injection screw vacuum pump comprises a main body frame, a vacuum pump main body arranged on the top surface of the main body frame, and a noise reduction mechanism arranged below the main body frame and used for reducing noise of the vacuum pump main body, wherein the noise reduction mechanism comprises a base platform, a plurality of spiral straight rods rotatably arranged on the top of the base platform, spiral sliding blocks spirally connected to the peripheral sides of the spiral straight rods, and hinged straight rods jointly hinged between the spiral sliding blocks and the main body frame; the noise reduction mechanism comprises a plurality of driving racks which slide on the top of the base platform through a wire rail and a driving air bag which is arranged at the end part of the driving racks, which is far away from the spiral straight rod; the end part of each spiral straight rod, which is far away from the spiral straight rod, is coaxially provided with a driving gear, and a plurality of driving gears are respectively meshed with a plurality of driving racks; the top surface of the base platform is provided with a synchronous mechanism for driving the spiral straight rods to synchronously rotate.
Through adopting above-mentioned technical scheme, when vacuum pump main part normal operating can take place vibrations, the vacuum pump main part is through articulated straight-bar conduction to spiral slider, spiral slider slides through self direction of keeping away from face gear and drives spiral straight-bar rotation, spiral straight-bar is through driving rack and driving gear meshing relation with vacuum pump main part's vibrations conduction to the drive gasbag, the drive gasbag produces the vibrations of reaction force and reduction vacuum pump main part through self deformation to this realizes reducing vacuum pump main part's vibrations and reduces vacuum pump main part noise effect.
Optionally, the synchronizing mechanism comprises a face gear rotatably installed at the top of the base platform and bevel gears coaxially arranged at the end parts of the spiral straight rods close to the face gear; the bevel gears are meshed with the face gears, and the rotation axes of the face gears are arranged vertically.
Through adopting above-mentioned technical scheme, bevel gears on four spiral straight-bars all mesh with face gear and set up, realize four spiral straight-bar synchronous rotation's effect for the vibrations of vacuum pump main part are converted into along the removal of vertical direction, can not produce the slope when reaching the vacuum pump main part vibrations and influence the effect of vacuum pump main part normal work with this.
Optionally, a heat dissipation mechanism for dissipating heat of the vacuum pump main body is arranged at the bottom of the main body frame, and comprises a fan cover body fixed on the bottom surface of the main body frame, a heat dissipation fan rotatably arranged on the inner side of the fan cover body, and a pneumatic motor arranged on the top surface of the base platform through a base support frame; the pneumatic motor and the rotating shaft of the cooling fan are coaxially arranged and fixedly connected, and a plurality of cooling through holes are formed in the combined position of the fan cover body and the main body frame.
Through adopting above-mentioned technical scheme, the gas that flows drives radiator fan through pneumatic motor and rotates, and radiator fan increases the gas velocity of flow around the vacuum pump main part through the heat dissipation through-hole, and the gas that flows reaches the effect of vacuum pump main part heat dissipation cooling.
Optionally, the base platform top is equipped with the clearance mechanism that is used for clearing up the mechanism of making an uproar that falls, clearance mechanism includes to follow the direction of spiral straight-bar length is located the pipeline of blowing at base platform top, the pipeline of blowing is located the spiral straight-bar and all is equipped with one in the opposite both sides, the pipeline of blowing is equipped with a plurality of jet-propelled through-hole along the direction of self length, a plurality of jet-propelled through-hole all points to the spiral straight-bar.
Through adopting above-mentioned technical scheme, the inside gas of gas blowing pipeline is through jet-propelled through-hole towards spiral straight-bar jet-propelled dust removal to this avoids impurity and dust to influence the rotation of spiral straight-bar as far as possible.
Optionally, a guardrail mechanism for avoiding personnel touching the main body of the vacuum pump as much as possible is arranged on the periphery of the base platform, and the guardrail mechanism comprises a protection frame arranged on the periphery of the base platform and hinged rotating shafts vertically fixed at four vertex angle positions at the top of the protection frame; the circumference sides of the hinged rotating shafts are hinged with protective fences, and a plurality of protective fences can be enclosed into a closed structure; the top of the base platform is provided with a locking mechanism for locking two adjacent protective fences.
Through adopting above-mentioned technical scheme, through the protective fence of locking mechanism locking, reach the effect that avoids personnel to touch the vacuum pump main part of high heat as far as possible and touch and scald
Optionally, the top surface of the base platform is provided with locking grooves at positions close to the peripheral edges, and the locking mechanism comprises a base locking plate arranged on the base platform through the locking grooves and a locking air bag fixedly connected between the bottom wall of the base locking plate and the inner bottom wall of the locking grooves; the base locking plate comprises a base transverse plate, a first locking vertical plate vertically fixed on the side wall, close to the spiral straight rod, of the base transverse plate, and a second locking vertical plate vertically fixed on the side wall, deviating from the spiral straight rod, of the base transverse plate.
Through adopting above-mentioned technical scheme, two protection rail on the same lateral wall of base platform can the joint inside the base jam plate, and the magnetic force absorption of magnetic force roller makes the protection rail get into the base jam plate inside smoothly, and when the vacuum pump main part normal operating through gaseous messenger, the protection rail is difficult for being bumped by the mistake and opens.
Optionally, the height of a vertical direction of the locking riser is higher than the height of a two vertical directions of the locking riser, and an adsorption mechanism for adsorbing the fence is arranged on one periphery of the locking riser.
Through adopting above-mentioned technical scheme, the staff is closed and is close to two protection rail on base platform same side edge, and locking riser one can make two protection rail and the base platform side looks parallel and level that corresponds, and eight protection rail can enclose into the airtight structure of transversal shape of turning back to two protection rail can fall into inside the base jam plate this moment.
Optionally, the adsorption equipment is including rotating install in locking riser one be close to the magnetic force roller of the lateral wall of spiral straight-bar, magnetic force roller possesses magnetism adsorption affinity and pivoted axis level setting.
Through adopting above-mentioned technical scheme, when the vacuum pump main part is not working, locking riser one adsorbs two protection rail on base platform same side edge through magnetic force roller, and the staff only need lightly draw the protection to enclose and keep off and can open the protection and enclose the airtight structure who closes and form, and the vertical in-process that upwards slides of base jam plate simultaneously, magnetic force roller and protection rail produce rolling friction to this reaches the effect that increases locking gasbag life
Optionally, the air inlet of the pneumatic motor is connected with an air outlet of an oil-gas separation device in the vacuum pump main body, the air outlet of the pneumatic motor is connected with an air inlet of a driving air bag, the air outlet of the driving air bag is connected with an air inlet of a locking air bag, and the air outlet of the locking air bag is connected with an air blowing pipeline.
Through adopting above-mentioned technical scheme, the exhaust port exhaust gas of the oil gas separator in the vacuum pump main part flows into pneumatic motor through the trachea and realizes the radiating effect of vacuum pump main part, and pneumatic motor's gas flows into the locking gasbag through the trachea and realizes the effect of protection rail locking, and locking gasbag's gas flows into the effect of making an uproar falls in the drive gasbag through the trachea and realizes the dust removal effect of damper through the trachea inflow gas-line of drive gasbag.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the vacuum pump main body vibrates, the vacuum pump main body is transmitted to the spiral sliding block through the hinged straight rod, the spiral sliding block slides towards the direction away from the face gear to drive the spiral straight rod to rotate, the spiral straight rod transmits the vibration of the vacuum pump main body to the driving air bag through the meshing relationship of the driving rack and the driving gear, and the driving air bag generates a reaction force through deformation of the driving air bag to reduce the vibration of the vacuum pump main body, so that the effect of weakening the vibration of the vacuum pump main body to reduce the noise of the vacuum pump main body is achieved;
2. two protective fences on the same side wall of the base platform can be clamped inside the base lock plate, the protective fences can smoothly enter the base lock plate due to the magnetic attraction of the magnetic roll shaft, and the protective fences are not easy to be touched by mistake to open when the vacuum pump main body works normally through gas;
3. the exhaust port of the oil-gas separation device in the vacuum pump main body is exhausted, the air flows into the pneumatic motor through the air pipe to realize the heat dissipation effect of the vacuum pump main body, the air of the pneumatic motor flows into the locking air bag through the air pipe to realize the locking effect of the protective fence, the air of the locking air bag flows into the driving air bag through the air pipe to realize the noise reduction effect of the vacuum pump main body, and the air of the driving air bag flows into the blowing pipeline through the air pipe to realize the dust removal effect of the damping mechanism.
Drawings
FIG. 1 is a schematic diagram of a fuel injection screw vacuum pump in an embodiment of the application.
Fig. 2 is a schematic view of the structure of the clearing guard rail and the hinged shaft according to the embodiment of the present application.
FIG. 3 is an exploded view of the interior of a base platform in accordance with an embodiment of the present application.
Fig. 4 is an enlarged schematic view of the portion a in fig. 3.
Fig. 5 is an exploded view of the connection relationship between the cooling fan and the air motor in the embodiment of the present application.
Fig. 6 is an enlarged schematic view of the portion B in fig. 3.
Reference numerals: 11. a base platform; 12. a main body frame; 13. a vacuum pump main body; 14. a base circular groove; 15. a long groove; 16. face gears; 17. a spiral straight rod; 18. bevel gears; 19. a spiral slide block; 20. hinging a straight rod; 21. a driving groove; 22. a drive rack; 23. driving the air bag; 24. a fan housing; 25. a heat dissipation through hole; 26. a heat radiation fan; 27. a pneumatic motor; 28. an oil-gas separation device; 29. an air blowing pipeline; 30. a jet through hole; 31. a base support; 32. a protective frame; 33. a rotating shaft is hinged; 34. a protective fence; 35. a locking groove; 36. a base lock plate; 37. locking the first vertical plate; 38. locking a second vertical plate; 39. assembling the through groove; 40. a magnetic roll shaft; 41. locking the air bag; 42. a support plate; 43. a drive gear; 44. and a base cross plate.
Detailed Description
The application is described in further detail below with reference to fig. 1-6.
The embodiment of the application discloses an oil injection screw vacuum pump. Referring to fig. 1 and 2, the oil injection screw vacuum pump includes a base platform 11, a main body frame 12 provided above the base platform 11, and a vacuum pump main body 13 provided on the top surface of the main body frame 12. A circular base groove 14 with a circular cross section is formed in the center of the top surface of the base platform 11, strip grooves 15 with a strip cross section are formed in the top surface of the base platform 11, four strip grooves 15 are axially and equidistantly formed by taking the axis of the circular base groove 14 as an axis, and the four strip grooves 15 are communicated with the circular base groove 14. The top surface of the base platform 11 is provided with four driving grooves 21 at equal intervals by taking the axis of the base platform as an axial direction, and the four driving grooves 21 are respectively perpendicular to and communicated with the four strip grooves 15.
Referring to fig. 2 to 4, the base platform 11 is rotatably installed with a spiral straight bar 17 in a horizontal direction through the long groove 15, and the spiral straight bar 17 is disposed in a direction along a length of the long groove 15. Support plates 42 are arranged at two ends of the spiral straight rod 17 in a penetrating manner, and the spiral straight rod 17 is fixed on the base platform 11 through the two support plates 42. The base platform 11 is rotatably provided with a face gear 16 through a base circular groove 14, and the axis of rotation of the face gear 16 is vertically arranged. Bevel gears 18 are coaxially fixed at the end parts of the four spiral straight rods 17 close to the face gear 16, and the four bevel gears 18 are meshed with the face gear 16. The peripheral sides of the spiral straight rods 17 are all in spiral connection with spiral sliding blocks 19, hinged straight rods 20 are hinged between the peripheral sides of the spiral sliding blocks 19 and the bottom of the main body frame 12, and the spiral sliding blocks 19 are located between two support flat plates 42.
Referring to fig. 2 to 4, the base platform 11 is provided with a driving rack 22 through the driving groove 21, and the driving rack 22 is slidably disposed along the length direction of the driving groove 21 through a wire rail. The end of the spiral straight rod 17 away from the face gear 16 is coaxially provided with a driving gear 43, and the four driving gears 43 are respectively meshed with the four driving racks 22. A driving air bag 23 is fixed between the end part of the driving rack 22, which is far away from the spiral straight rod 17, and the inner wall of the driving groove 21, and an air blowing pipeline 29 is arranged on the base platform 11 along the length direction of the spiral straight rod 17 through the long-strip groove 15, wherein one air blowing pipeline 29 is arranged at the position of the two opposite sides of the spiral straight rod 17, and two air blowing pipelines 29 in each long-strip groove 15 are all arranged below the spiral straight rod 17. The air blowing pipe 29 is provided with a plurality of air blowing through holes 30 along the length direction thereof, and the plurality of air blowing through holes 30 are all directed to the spiral straight rod 17.
Referring to fig. 1, 2 and 5, a fan cover 24 is fixedly mounted on the bottom surface of the main body frame 12, and a plurality of heat dissipation through holes 25 are formed at the combined position of the fan cover 24 and the main body frame 12. A radiator fan 26 is rotatably mounted in the fan housing 24, and an axis of rotation of the radiator fan 26 is vertically arranged. The top surface of the base platform 11 is provided with an air motor 27 through a base support 31, and the air motor 27 is coaxially arranged with and fixedly connected with the rotation shaft of the cooling fan 26. The base platform 11 is externally provided with a protective frame 32, and the protective frame 32 is formed by enclosing four straight rods and has a cross section in a shape like a Chinese character 'Hui'. The four vertex angle positions at the top of the protective frame 32 are vertically fixed with hinged rotating shafts 33, two protective fences 34 are hinged to the peripheral sides of each hinged rotating shaft 33, and the protective fences 34 on the two adjacent hinged rotating shafts 33 can be enclosed to form a shape which is flush with the corresponding side edge of the base platform 11.
Referring to fig. 2, 3 and 6, locking grooves 35 are formed in positions, close to the peripheral edges, of the top surface of the base platform 11, base locking plates 36 are arranged on the base platform 11 through the locking grooves 35, and locking air bags 41 are arranged between the bottom walls of the base locking plates 36 and the inner bottom walls of the locking grooves 35, so that the base locking plates 36 can slide along the vertical direction through the locking air bags 41. The air inlet of the pneumatic motor 27 is communicated with the air outlet of the oil-gas separation device 28 in the vacuum pump main body 13, the air outlet of the pneumatic motor 27 is communicated with the air inlet of the driving air bag 23, the air outlet of the driving air bag 23 is communicated with the air inlet of the locking air bag 41, and the air outlet of the locking air bag 41 is communicated with the air blowing pipeline 29. The inner diameters of the air inlets of the locking air bag 41 and the driving air bag 23 are larger than the inner diameters of the air outlets of the locking air bag and the driving air bag.
Referring to fig. 2, 3 and 6, the base lock plate 36 includes a base cross plate 44, a first locking riser 37 vertically secured to a side wall of the base cross plate 44 adjacent the face gear 16, and a second locking riser 38 vertically secured to a side wall of the base cross plate 44 facing away from the face gear 16. The vertical direction of the first locking vertical plate 37 is higher than that of the second locking vertical plate 38, an assembly through groove 39 is formed in the side wall, close to the face gear 16, of the first locking vertical plate 37, a magnetic roll shaft 40 with magnetic attraction force is rotatably installed on the first locking vertical plate 37 through the assembly through groove 39, and the axis of rotation of the magnetic roll shaft 40 is horizontally arranged.
The implementation principle of the oil injection screw vacuum pump provided by the embodiment of the application is as follows: when the vacuum pump main body 13 does not work, the two protection fences 34 close to the same side edge of the base platform 11 are closed by workers, and the two protection fences 34 are parallel and level with the corresponding side edge of the base platform 11 through the magnetic attraction of the magnetic roll shafts 40, so that the eight protection fences 34 can be enclosed to form a closed structure with the cross section in a shape like a Chinese character 'Hui'. When the vacuum pump main body 13 is operating normally, the gas discharged from the gas outlet of the gas-oil separation device 28 in the vacuum pump main body 13 flows into the air motor 27 through the gas pipe. The flowing gas drives the cooling fan 26 to rotate through the pneumatic motor 27, the cooling fan 26 increases the flow rate of the gas around the vacuum pump main body 13 through the cooling through holes 25, and the effect of cooling the vacuum pump main body 13 is achieved through the flowing gas.
The air in the air motor 27 flows into the locking air bag 41 through the air pipe, and the locking air bag 41 drives the base locking plate 36 to slide in the vertical upward direction through the expansion of the locking air bag. Two protective fences 34 on the same side wall of the base platform 11 can be clamped inside the base locking plate 36, the protective fences 34 can smoothly enter the inside of the base locking plate 36 due to the magnetic attraction of the magnetic roll shafts 40, and the protective fences 34 locked through the base locking plate 36 avoid the situation that personnel touch the high-temperature vacuum pump main body 13 to be scalded as much as possible. The air in the locking air bag 41 flows into the driving air bag 23 through the air pipe, the driving air bag 23 drives the driving rack 22 to rotate through self-expansion, and the driving rack 22 drives the spiral straight rod 17 to rotate through the driving gear 43.
When the vacuum pump main body 13 can vibrate during normal operation, the vacuum pump main body 13 is transmitted to the spiral sliding block 19 through the hinged straight rod 20, the spiral sliding block 19 slides towards the direction far away from the face gear 16 to drive the spiral straight rod 17 to rotate, the spiral straight rod 17 transmits vibration of the vacuum pump main body 13 to the driving air bag 23 through the meshing relationship between the driving rack 22 and the driving gear 43, and the driving air bag 23 generates a reaction force through deformation of the driving air bag to reduce vibration of the vacuum pump main body 13. Bevel gears 18 on the four spiral straight rods 17 are meshed with the face gears 16, so that the effect of synchronous rotation of the four spiral straight rods 17 is achieved, and vibration of the vacuum pump main body 13 is converted into movement along the vertical direction; thereby realizing damping of vibration of the vacuum pump main body 13 to reduce noise effect of the vacuum pump main body 13. The gas in the driving air bag 23 flows into the blowing pipeline 29 through the gas pipe, and the gas in the blowing pipeline 29 is blown to the spiral straight rod 17 through the blowing through hole 30 for dust removal, so that the rotation of the spiral straight rod 17 is prevented from being influenced by impurities and dust as much as possible.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. The utility model provides a fuel injection screw vacuum pump, includes main part frame (12) and locates vacuum pump main part (13) of main part frame (12) top surface, its characterized in that: the vacuum pump comprises a main body frame (12), a vacuum pump main body (13) and a noise reduction mechanism, wherein the noise reduction mechanism is arranged below the main body frame (12) and used for reducing noise of the vacuum pump main body (13), and comprises a base platform (11), a plurality of spiral straight rods (17) rotatably arranged at the top of the base platform (11), spiral sliding blocks (19) spirally connected to the peripheral sides of the spiral straight rods (17) and hinged straight rods (20) hinged between the spiral sliding blocks (19) and the main body frame (12); the noise reduction mechanism further comprises a plurality of driving racks (22) which slide on the top of the base platform (11) through a wire rail and driving air bags (23) which are arranged at the end parts of the driving racks (22) far away from the spiral straight rods (17); the end parts of the spiral straight rods (17) far away from each other are coaxially provided with driving gears (43), and a plurality of the driving gears (43) are respectively meshed with a plurality of driving racks (22); the top surface of the base platform (11) is provided with a synchronous mechanism for driving a plurality of spiral straight rods (17) to synchronously rotate; the synchronous mechanism comprises a face gear (16) rotatably arranged at the top of the base platform (11) and bevel gears (18) coaxially arranged at the end parts, close to the face gear (16), of the spiral straight rods (17); the bevel gears (18) are meshed with the face gears (16), and the rotation axes of the face gears (16) are vertically arranged; the bottom of the main body frame (12) is provided with a heat dissipation mechanism for dissipating heat of the vacuum pump main body (13), and the heat dissipation mechanism comprises a fan cover body (24) fixed on the bottom surface of the main body frame (12), a heat dissipation fan (26) rotatably arranged on the inner side of the fan cover body (24), and a pneumatic motor (27) erected on the top surface of the base platform (11) through a base support (31); the pneumatic motor (27) is coaxially arranged with the rotating shaft of the cooling fan (26) and is fixedly connected with the rotating shaft, and a plurality of cooling through holes (25) are formed in the combined part of the fan cover body (24) and the main body frame (12); the cleaning mechanism comprises an air blowing pipeline (29) arranged at the top of the base platform (11) along the length direction of the spiral straight rod (17), one air blowing pipeline (29) is arranged at two opposite sides of the spiral straight rod (17), a plurality of air blowing through holes (30) are formed in the air blowing pipeline (29) along the length direction of the air blowing pipeline, and the plurality of air blowing through holes (30) are all directed at the spiral straight rod (17); the periphery of the base platform (11) is provided with a guardrail mechanism for avoiding personnel touching the high heat as much as possible, and the guardrail mechanism comprises a protection frame (32) arranged on the periphery of the base platform (11) and hinged rotating shafts (33) vertically fixed at four vertex angle positions at the top of the protection frame (32); the circumference of each hinged rotating shaft (33) is hinged with a protective fence (34), and a plurality of protective fences (34) can be enclosed into a closed structure; the top of the base platform (11) is provided with a locking mechanism for locking two adjacent protective fences (34); the locking mechanism comprises a base locking plate (36) arranged on the base platform (11) through the locking groove (35), and a locking air bag (41) fixedly connected between the bottom wall of the base locking plate (36) and the inner bottom wall of the locking groove (35); the base locking plate (36) comprises a base transverse plate (44), a first locking vertical plate (37) vertically fixed on the side wall of the base transverse plate (44) close to the spiral straight rod (17), and a second locking vertical plate (38) vertically fixed on the side wall of the base transverse plate (44) away from the spiral straight rod (17); the air inlet of the pneumatic motor (27) is connected with the air outlet of the oil-gas separation device (28) in the vacuum pump main body (13), the air outlet of the pneumatic motor (27) is connected with the air inlet of the driving air bag (23), the air outlet of the driving air bag (23) is connected with the air inlet of the locking air bag (41), and the air outlet of the locking air bag (41) is connected with the air blowing pipeline (29).
2. A fuel injection screw vacuum pump according to claim 1, wherein: the height of the first locking vertical plate (37) in the vertical direction is higher than that of the second locking vertical plate (38), and an adsorption mechanism for adsorbing the fence is arranged on the periphery of the first locking vertical plate (37).
3. A fuel injection screw vacuum pump according to claim 2, wherein: the adsorption mechanism comprises a magnetic force roller shaft (40) which is rotatably arranged on the side wall of the first locking vertical plate (37) close to the spiral straight rod (17), and the magnetic force roller shaft (40) is provided with magnetic adsorption force and is horizontally arranged along the rotating axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310072404.0A CN116146495B (en) | 2023-02-01 | 2023-02-01 | Oil injection screw vacuum pump |
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| CN116146495B true CN116146495B (en) | 2023-10-13 |
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| JP3071602U (en) * | 2000-02-02 | 2000-09-14 | 財団法人工業技術研究院 | Twin screw rotor mechanism with electric control gap adjustment function |
| JP2004036547A (en) * | 2002-07-04 | 2004-02-05 | Ts Corporation | Vertical positive displacement vacuum pump |
| DE202008013732U1 (en) * | 2008-10-08 | 2009-02-12 | Relo Gmbh | Water-injected screw compressor system |
| JP2013167068A (en) * | 2012-02-14 | 2013-08-29 | Bunka Shutter Co Ltd | Opening/closing device installation structure |
| CN108869296A (en) * | 2018-08-31 | 2018-11-23 | 重庆开山压缩机有限公司 | Exhaust end base of oil injection threaded bolt formula vacuum pump |
| CN110206714A (en) * | 2019-04-30 | 2019-09-06 | 淄博棠鸣机电科技有限公司 | A kind of Portable, environmental protective sets spare controller |
| WO2021046871A1 (en) * | 2019-09-10 | 2021-03-18 | 苏州莱锦机电自动化科技有限公司 | Efficient vibration-damping device for mechanical apparatus |
| CN216451234U (en) * | 2021-12-22 | 2022-05-06 | 无锡市铭成电机制造有限公司 | Noise-reduction type direct-current brush motor |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3071602U (en) * | 2000-02-02 | 2000-09-14 | 財団法人工業技術研究院 | Twin screw rotor mechanism with electric control gap adjustment function |
| JP2004036547A (en) * | 2002-07-04 | 2004-02-05 | Ts Corporation | Vertical positive displacement vacuum pump |
| DE202008013732U1 (en) * | 2008-10-08 | 2009-02-12 | Relo Gmbh | Water-injected screw compressor system |
| JP2013167068A (en) * | 2012-02-14 | 2013-08-29 | Bunka Shutter Co Ltd | Opening/closing device installation structure |
| CN108869296A (en) * | 2018-08-31 | 2018-11-23 | 重庆开山压缩机有限公司 | Exhaust end base of oil injection threaded bolt formula vacuum pump |
| CN110206714A (en) * | 2019-04-30 | 2019-09-06 | 淄博棠鸣机电科技有限公司 | A kind of Portable, environmental protective sets spare controller |
| WO2021046871A1 (en) * | 2019-09-10 | 2021-03-18 | 苏州莱锦机电自动化科技有限公司 | Efficient vibration-damping device for mechanical apparatus |
| CN216451234U (en) * | 2021-12-22 | 2022-05-06 | 无锡市铭成电机制造有限公司 | Noise-reduction type direct-current brush motor |
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| CN116146495A (en) | 2023-05-23 |
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