CN115450911A - Low-noise roots vacuum pump - Google Patents
Low-noise roots vacuum pump Download PDFInfo
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- CN115450911A CN115450911A CN202211262836.XA CN202211262836A CN115450911A CN 115450911 A CN115450911 A CN 115450911A CN 202211262836 A CN202211262836 A CN 202211262836A CN 115450911 A CN115450911 A CN 115450911A
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- pump
- fixedly connected
- shell
- pump body
- buffer
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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
- F04C18/126—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 radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots 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
- 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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- 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
-
- 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
- F04C29/0021—Systems for the equilibration of forces acting on the pump
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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
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
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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
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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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a low-noise Roots vacuum pump, which comprises a pump shell, wherein the bottom of the pump shell is fixedly connected with a fixed base, the inner wall of the pump shell is fixedly connected with a pump body, one side of the inner wall of the pump shell is fixedly connected with a buffer device, one side of the pump shell, far away from the buffer device, is provided with a through hole, the inner wall of the through hole is fixedly connected with a supporting device, and the output end of the pump body penetrates through the supporting device and is fixedly connected with the supporting device; the pump housing includes: the pump body is coated and fixed by the shell, cooling liquid is filled in the shell, the flow guide slide way is arranged in a spiral shape, and the two ends of the flow guide slide way are respectively communicated with a water inlet and a water outlet. This roots vacuum pump of low noise, the noise reduction effect is better to can cool off the heat dissipation to the pump body in the work when making an uproar.
Description
Technical Field
The invention relates to the technical field of Roots vacuum pumps, in particular to a low-noise Roots vacuum pump.
Background
The roots vacuum pump is a variable displacement vacuum pump in which two blade-shaped rotors rotating synchronously in opposite directions are arranged in the pump, small gaps are formed between the rotors and the inner wall of a pump shell, and the rotors and the inner wall of the pump shell are not in contact with each other.
However, the currently used roots vacuum pump usually generates a large noise in the working process, and the noise generated by the vibration between the components in the working process of the vacuum pump is also serious, which affects the working environment.
Disclosure of Invention
In order to achieve the purpose, the invention is realized by the following technical scheme: a low-noise Roots vacuum pump comprises a pump shell, wherein a fixed base is fixedly connected to the bottom of the pump shell, a pump body is fixedly connected to the inner wall of the pump shell, a buffer device is fixedly connected to one side of the inner wall of the pump shell, a through hole is formed in one side, far away from the buffer device, of the pump shell, a supporting device is fixedly connected to the inner wall of the through hole, and the output end of the pump body penetrates through the supporting device and is fixedly connected with the supporting device;
the pump housing includes:
the pump body is fixedly coated with the shell, cooling liquid is filled in the shell, the flow guide slide way is arranged in a spiral shape, and the two ends of the flow guide slide way are respectively communicated with a water inlet and a water outlet;
the cooling device comprises a rotary push plate and a guide slide way, wherein the rotary push plate is provided with an arc-shaped structure, and the arc-shaped push plate is fixed on the side surface of the rotary push plate;
the rotating ring, this rotating ring have the loop configuration to and set up rotate the inside race ring of circle, rotate the circle outside and rotate push pedal fixed connection, conveniently reduce the vibrations of the pump body during operation, also can reduce the noise that the pump body during operation produced when protecting the pump body, it is all relatively good to fall to make an uproar and protecting effect, is provided with spiral helicine water conservancy diversion slide simultaneously, can make things convenient for the coolant liquid can flow to the different positions around the pump body for the coolant liquid can fully absorb the heat on the pump body, and the cooling effect is better.
Preferably, the one end that water inlet and delivery port kept away from the water conservancy diversion slide all runs through the casing and extends to the casing outside, the one end that water inlet and delivery port kept away from the water conservancy diversion slide all communicates with outside coolant liquid storage box, the rolling circle cover is established on the pump body and is connected with the pump body rotation through the race ring.
Preferably, the pump body is arranged inside the shell, one side of the buffer device far away from the pump body is fixedly connected with the inner wall of the shell, and the through hole is formed in the center of one side of the shell far away from the buffer device.
Preferably, buffer includes the buffing pad, the dashpot has been seted up to buffing pad one side, the flexible groove has been seted up to the dashpot inner wall, flexible inslot wall sliding connection has the extrusion piece, extrusion piece one end extends to flexible groove outside and fixedly connected with extrusion spring, flexible inslot wall one side is run through and sliding connection has the ejector pad, ejector pad one end runs through the buffing pad and extends to the buffing pad side, one side threaded connection that the buffing pad is close to the ejector pad has the regulation end cover, the inside buffer block that is provided with of dashpot, the buffer block side and extrusion spring sliding connection conveniently carry out the shock attenuation to the pump body, reduce the vibration noise of the pump body to the vibration amplitude of the convenient control pump body at the during operation can be according to the in service behavior with the vibration amplitude regulation to the minimum position of noise of the pump body, and regulation nature is better.
Preferably, one side of the buffer seat close to the adjusting end cover penetrates through the shell and is fixedly connected with the shell, and a sealing ring is arranged between the extrusion block and the telescopic groove.
Preferably, an oblique chamfer is arranged at one end, close to the extrusion block, of the push block, an oblique angle matched with the oblique chamfer on the push block is arranged on the extrusion block, and one side of the buffer block extends to the outside of the buffer groove and is fixedly connected with the side face of the pump body.
Preferably, the ejector pad includes the block, the spacing strip of block side fixedly connected with arc, the ball groove has all been seted up to the spacing strip both sides of arc, ball inslot wall sliding connection has the support ball, and when adjusting the end cover and rotating, the spacing strip of arc is through supporting the ball and sliding in the inside annular spout of adjusting the end cover, adjusts the end cover when lateral shifting, can drive the block through the spacing strip of arc and remove, conveniently drives ejector pad lateral shifting through adjusting the end cover.
Preferably, the inner wall of the adjusting end cover is provided with an annular sliding groove matched with the arc-shaped limiting strip, and the supporting balls are provided with multiple groups and are uniformly distributed on the arc-shaped limiting strip.
Preferably, strutting arrangement includes the lock ring, the inside spacing collar that is provided with of lock ring, the spacing collar is provided with the multiunit and the diameter increases in proper order, fixedly connected with annular gasbag between the adjacent spacing collar, the spacing slide of spacing collar medial surface fixedly connected with, spacing collar lateral surface fixedly connected with limiting plate, the limiting plate in the spacing collar outside extends to inside the spacing slide of adjacent spacing collar inboard, can avoid the vibrations that can adapt to the pump body when the inside coolant liquid of pump case reveals, the pump body extrudes the spacing collar when vibrations, and the spacing collar produces vibrations and extrudees annular gasbag, and the vibrations of the flexible spacing collar of accessible annular gasbag and the pump body can be absorbed the vibration noise of the pump body to a certain extent simultaneously, cuts down the influence of vibrations on the pump case simultaneously, conveniently alleviates the vibrations of pump case.
Preferably, the support ring is arranged in the through hole and fixedly connected with the inner wall of the through hole, and the output end of the pump body penetrates through the limiting ring and is fixedly connected with the limiting ring.
The invention provides a low-noise roots vacuum pump. The method has the following beneficial effects:
1. the utility model provides a roots vacuum pump of low noise, be provided with the pump case, live pump body parcel through the pump case, then at the inside coolant liquid that fills of pump case, the noise that the pump body during operation produced is consumed a part when passing the coolant liquid, accessible coolant liquid carries out isolated noise reduction treatment to the noise that the pump body produced, coolant liquid also can dispel the heat to the pump body simultaneously, avoid the damage that the pump body temperature is higher to result in when using for a long time, the pump body can cushion with the friction between the coolant liquid at the vibrations accessible that the during operation produced, conveniently reduce the vibrations of pump body during operation, also can reduce the noise that the pump body during operation produced when protecting the pump body, it is all better to fall noise reduction and protective effect, be provided with spiral helicine water conservancy diversion slide simultaneously, the water inlet is when pouring into the coolant liquid into the casing inside, part coolant liquid can flow along the water conservancy diversion slide, drive the arc push pedal rotation of water conservancy diversion slide below simultaneously, the arc push pedal drives and rotates the rotation, can drive the coolant liquid of casing inside through rotating the push pedal and rotate around the pump body, make things convenient for coolant liquid can flow to different positions around, make things convenient for the coolant liquid can fully absorb the heat on the pump body, the cooling effect is better.
2. This roots vacuum pump of low noise, be provided with buffer, when the pump body produces vibrations, drive the buffer block vibrations, extrude extrusion spring during the buffer block vibrations, the extrusion spring receives the vibrations of absorbing the buffer block through deformation after the extrusion, thereby absorb the vibrations of the pump body, conveniently carry out the shock attenuation to the pump body, reduce the vibration noise of the pump body, when rotating the regulation end cover, adjust the direction removal of end cover to the buffing pad, and extrude the ejector pad, the ejector pad removes towards flexible inslot portion, and extrude the extrusion block through oblique chamfer, make the extrusion block stretch out to flexible inslot portion, and extrude the extrusion spring, can improve the pressure of extrusion spring to the buffer block, conveniently control the vibration amplitude of the pump body at the during operation, can adjust the vibration amplitude of the pump body to the minimum position of noise according to the in service behavior, the regulation nature is better.
3. This roots vacuum pump of low noise, when adjusting the end cover and rotating, the spacing strip of arc is adjusting the inside slip of the inside annular spout of end cover through supporting the ball, adjusts the end cover when lateral shifting, can drive the block through the spacing strip of arc and remove, conveniently drives ejector pad lateral shifting through adjusting the end cover.
4. This roots vacuum pump of low noise, be provided with strutting arrangement, the inside spacing collar of accessible strutting arrangement and annular gasbag support the pump body during use, the cooperation of spacing collar and annular gasbag can plug up the through-hole on the pump case simultaneously, can adapt to the vibrations of the pump body when avoiding the inside coolant liquid of pump case to reveal, the pump body extrudes the spacing collar when vibrations, the spacing collar produces vibrations and extrudes annular gasbag, the flexible adaptation spacing collar of accessible annular gasbag and the vibrations of the pump body, simultaneously can absorb the vibration noise of the pump body to a certain extent, it receives the influence of vibrations on the pump body to reduce the pump case simultaneously, conveniently alleviate the vibrations of pump case.
Drawings
FIG. 1 is a schematic view of the low-noise roots vacuum pump of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the housing structure of the present invention;
FIG. 4 is a schematic view of a buffer device according to the present invention;
FIG. 5 is a schematic cross-sectional view of a buffering device according to the present invention;
FIG. 6 is a schematic view of a push block structure according to the present invention;
FIG. 7 is a schematic view of the supporting device of the present invention;
FIG. 8 is a schematic cross-sectional view of the supporting device of the present invention.
In the figure: 1. a pump housing; 11. a housing; 12. a diversion slideway; 13. a water inlet; 14. a water outlet; 15. rotating the push plate; 16. an arc-shaped push plate; 17. rotating the ring; 2. a fixed base; 3. a pump body; 4. a buffer device; 41. a buffer seat; 42. a buffer tank; 43. a telescopic groove; 44. extruding the block; 45. a compression spring; 46. a push block; 461. a block body; 462. an arc-shaped limiting strip; 463. a ball groove; 464. supporting the balls; 47. adjusting the end cover; 48. a buffer block; 5. a through hole; 6. a support device; 61. a support ring; 62. a limiting ring; 63. an annular air bag; 64. a limiting slide way; 65. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-3, the present invention provides a technical solution: a low-noise Roots vacuum pump comprises a pump shell 1, wherein the bottom of the pump shell 1 is fixedly connected with a fixed base 2, the inner wall of the pump shell 1 is fixedly connected with a pump body 3, one side of the inner wall of the pump shell 1 is fixedly connected with a buffer device 4, one side, far away from the buffer device 4, of the pump shell 1 is provided with a through hole 5, the inner wall of the through hole 5 is fixedly connected with a supporting device 6, and the output end of the pump body 3 penetrates through the supporting device 6 and is fixedly connected with the supporting device 6;
the pump housing 1 includes:
the pump body 3 is coated and fixed by the shell 11, the shell 11 is filled with cooling liquid, the flow guide slide way 12 is in a spiral shape, and two ends of the flow guide slide way 12 are respectively communicated with a water inlet 13 and a water outlet 14;
the rotary push plate 15 is provided with an arc-shaped structure, the arc-shaped push plate 16 is fixed on the side surface of the rotary push plate 15, one side, far away from the rotary push plate 15, of the arc-shaped push plate 16 extends into the flow guide slideway 12, and when the cooling liquid in the flow guide slideway 12 flows, the arc-shaped push plate 16 can be pushed to drive the arc-shaped push plate 16 to rotate;
the rotating ring 17 is of an annular structure, the bearing ring is arranged inside the rotating ring 17, and the outer side of the rotating ring 17 is fixedly connected with the rotating push plate 15.
The ends, far away from the diversion slide way 12, of the water inlet 13 and the water outlet 14 penetrate through the shell 11 and extend to the outside of the shell 11, the ends, far away from the diversion slide way 12, of the water inlet 13 and the water outlet 14 are communicated with an external cooling liquid storage tank, and the rotating ring 17 is sleeved on the pump body 3 and is rotatably connected with the pump body 3 through a bearing ring.
The pump body 3 is arranged inside the shell 11, one side of the buffer device 4 far away from the pump body 3 is fixedly connected with the inner wall of the shell 11, and the through hole 5 is formed in the center of one side of the shell 11 far away from the buffer device 4.
Be provided with pump case 1, live pump body 3 parcel through pump case 1, then at the inside coolant liquid that fills of pump case 1, the noise that the pump body 3 during operation produced is consumed a part when passing the coolant liquid, accessible coolant liquid carries out isolated noise reduction treatment to the noise that the pump body 3 produced, simultaneously the coolant liquid also can dispel the heat to the pump body 3, avoid the damage that the higher temperature that leads to of the long-term use of the pump body 3, the vibrations accessible that the pump body 3 produced at the during operation cushions with the friction between the coolant liquid, conveniently reduce the vibrations of the pump body 3 during operation, also can reduce the noise that the pump body 3 produced during operation in the protection pump body 3, it is all better to fall noise reduction and protective effect, be provided with spiral helicine water conservancy diversion slide 12 simultaneously, water inlet 13 is when pouring into the coolant liquid into to casing 11 inside, some coolant liquid can flow along water conservancy diversion slide 12, drive the rotation of arc push pedal 16 below water conservancy diversion slide 12 simultaneously, arc push pedal 16 drives rotation push pedal 15 and rotates, can drive the coolant liquid of casing 11 inside and rotate around 3 through rotating, make things convenient for coolant liquid can flow to the different positions around the pump body 3, make things convenient for the coolant liquid can fully absorb the heat on the pump body, the coolant liquid on the pump body better.
The second embodiment:
referring to fig. 1-6, the present invention provides a technical solution based on the first embodiment: the buffer device 4 comprises a buffer base 41, a buffer groove 42 is arranged on one side of the buffer base 41, a telescopic groove 43 is arranged on the inner wall of the buffer groove 42, an extrusion block 44 is slidably connected on the inner wall of the telescopic groove 43, one end of the extrusion block 44 extends to the outside of the telescopic groove 43 and is fixedly connected with an extrusion spring 45, a push block 46 is penetratingly and slidably connected on one side of the inner wall of the telescopic groove 43, one end of the push block 46 penetrates through the buffer base 41 and extends to the side surface of the buffer base 41, an adjusting end cover 47 is in threaded connection with one side of the buffer base 41 close to the push block 46, a buffer block 48 is arranged inside the buffer groove 42, the side surface of the buffer block 48 is slidably connected with the extrusion spring 45, one side of the buffer base 41 close to the adjusting end cover 47 penetrates through the shell 11 and is fixedly connected with the shell 11, a sealing ring is arranged between the extrusion block 44 and the telescopic groove 43, one end of the push block 46 close to the extrusion block 44 is provided with an oblique chamfer, an oblique chamfer matched with the oblique chamfer on the extrusion block 44, one side of the buffer block 48 extends to the outside of the buffer groove 42 and is fixedly connected with the side of the pump body 3, the buffer device 4 is arranged, when the pump body 3 vibrates, the buffer block 48 is driven to vibrate, the extrusion spring 45 is extruded when the buffer block 48 vibrates, the extrusion spring 45 absorbs the vibration of the buffer block 48 through deformation after being extruded, so that the vibration of the pump body 3 is absorbed, the pump body 3 is conveniently damped, the vibration noise of the pump body 3 is reduced, when the adjusting end cover 47 is rotated, the adjusting end cover 47 moves towards the direction of the buffer seat 41 and extrudes the push block 46, the push block 46 moves towards the inside of the telescopic groove 43 and extrudes the extrusion block 44 through an inclined chamfer, so that the extrusion block 44 extends out of the telescopic groove 43 and extrudes the extrusion spring 45, the pressure of the extrusion spring 45 on the buffer block 48 can be improved, and the vibration amplitude of the pump body 3 during working can be conveniently controlled, the vibration amplitude of the pump body 3 can be adjusted to the position with the minimum noise according to the use condition, and the adjustability is good.
Example three:
referring to fig. 1-8, the present invention provides a technical solution based on the first embodiment and the second embodiment: the supporting device 6 comprises a supporting ring 61, a limiting ring 62 is arranged inside the supporting ring 61, the limiting ring 62 is provided with multiple groups, the diameter is increased in sequence, an annular air bag 63 is fixedly connected between adjacent limiting rings 62, a limiting slide 64 is fixedly connected to the inner side of the limiting ring 62, a limiting plate 65 is fixedly connected to the outer side of the limiting ring 62, the limiting plate 65 outside the limiting ring 62 extends to the inner side of the limiting slide 64 inside the adjacent limiting ring 62, the supporting ring 61 is arranged inside a through hole 5 and fixedly connected with the inner wall of the through hole 5, the output end of the pump body 3 penetrates through the limiting ring 62 and is fixedly connected with the limiting ring 62, the supporting device 6 is arranged, the limiting ring 62 and the annular air bag 63 inside the supporting device 6 support the pump body 3 during use, meanwhile, the through hole 5 on the pump shell 1 can be blocked through the cooperation of the limiting ring 62 and the annular air bag 63, the cooling liquid inside the pump shell is prevented from leaking, the pump body 3 can adapt to the vibration of the pump body 3 when the pump body is extruded, the limiting ring 62 when the pump body 3 is extruded, the limiting ring 62 generates vibration and the annular air bag 63, the noise is reduced on the pump body 3, and the pump body is conveniently absorbed on the pump body 1.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are not specifically illustrated or described, but are instead contemplated to be practiced in the art by those skilled in the art.
Claims (10)
1. A roots vacuum pump of low noise, includes pump case (1), its characterized in that: the bottom of the pump shell (1) is fixedly connected with a fixed base (2), the inner wall of the pump shell (1) is fixedly connected with a pump body (3), one side of the inner wall of the pump shell (1) is fixedly connected with a buffer device (4), one side, far away from the buffer device (4), of the pump shell (1) is provided with a through hole (5), the inner wall of the through hole (5) is fixedly connected with a supporting device (6), and the output end of the pump body (3) penetrates through the supporting device (6) and is fixedly connected with the supporting device (6);
the pump housing (1) includes:
the pump body (3) comprises a shell (11), the shell (11) is of a columnar structure, and a flow guide slide way (12) is fixed on the inner wall of the shell (11), the shell (11) is used for coating and fixing the pump body (3), cooling liquid is filled in the shell (11), the flow guide slide way (12) is arranged in a spiral shape, and two ends of the flow guide slide way are respectively communicated with a water inlet (13) and a water outlet (14);
the rotary push plate (15), the rotary push plate (15) has an arc-shaped structure, and an arc-shaped push plate (16) is fixed on the side surface of the rotary push plate (15), one side of the arc-shaped push plate (16) far away from the rotary push plate (15) extends into the flow guide slide way (12), and when the cooling liquid in the flow guide slide way (12) flows, the arc-shaped push plate (16) can be pushed to drive the arc-shaped push plate (16) to rotate;
the rotating ring (17) is of an annular structure, the bearing ring is arranged inside the rotating ring (17), and the outer side of the rotating ring (17) is fixedly connected with the rotating push plate (15).
2. A low noise roots vacuum pump as claimed in claim 1, wherein: one end that water inlet (13) and delivery port (14) kept away from water conservancy diversion slide (12) all runs through casing (11) and extends to casing (11) outside, the one end that water inlet (13) and delivery port (14) kept away from water conservancy diversion slide (12) all communicates with outside coolant liquid storage box, it establishes on pump body (3) and rotates through race ring and pump body (3) to rotate and be connected to rotate to revolve runner ring (17) cover.
3. A low noise roots vacuum pump as claimed in claim 1, wherein: the pump body (3) is arranged inside the shell (11), one side of the buffer device (4) far away from the pump body (3) is fixedly connected with the inner wall of the shell (11), and the through hole (5) is formed in the center of one side of the shell (11) far away from the buffer device (4).
4. A low noise roots vacuum pump as claimed in claim 1, wherein: buffer (4) are including buffer seat (41), buffer (42) have been seted up to buffer seat (41) one side, flexible groove (43) have been seted up to buffer (42) inner wall, flexible groove (43) inner wall sliding connection has extrusion piece (44), extrusion piece (44) one end extends to flexible groove (43) outside and fixedly connected with extrusion spring (45), flexible groove (43) inner wall one side runs through and sliding connection has ejector pad (46), ejector pad (46) one end runs through buffer seat (41) and extends to buffer seat (41) side, one side threaded connection that buffer seat (41) is close to ejector pad (46) has regulation end cover (47), inside buffer (48) that is provided with of buffer groove (42), buffer (48) side and extrusion spring (45) sliding connection.
5. A low noise roots vacuum pump according to claim 4, wherein: one side of the buffer seat (41) close to the adjusting end cover (47) penetrates through the shell (11) and is fixedly connected with the shell (11), and a sealing ring is arranged between the extrusion block (44) and the telescopic groove (43).
6. A low noise Roots vacuum pump as claimed in claim 4, wherein: the one end that ejector pad (46) is close to extrusion piece (44) has seted up oblique chamfer, set up the oblique angle with oblique chamfer looks adaptation on ejector pad (46) on extrusion piece (44), buffer block (48) one side extend to the dashpot (42) outside and with pump body (3) side fixed connection.
7. A low noise Roots vacuum pump as claimed in claim 4, wherein: the push block (46) comprises a block body (461), an arc-shaped limiting strip (462) is fixedly connected to the side face of the block body (461), ball grooves (463) are formed in two sides of the arc-shaped limiting strip (462), and supporting balls (464) are connected to the inner walls of the ball grooves (463) in a sliding mode.
8. A low noise roots vacuum pump as claimed in claim 7, wherein: the inner wall of the adjusting end cover (47) is provided with an annular sliding groove (465) matched with the arc-shaped limiting strip (462), and the supporting balls (464) are provided with multiple groups and are uniformly distributed on the arc-shaped limiting strip (462).
9. A low noise roots vacuum pump as claimed in claim 1, wherein: strutting arrangement (6) are including lock ring (61), inside spacing collar (62) that is provided with of lock ring (61), spacing collar (62) are provided with the multiunit and the diameter increases in proper order, fixedly connected with annular gasbag (63) between adjacent spacing collar (62), spacing collar (62) medial surface fixedly connected with spacing slide (64), spacing collar (62) lateral surface fixedly connected with limiting plate (65), limiting plate (65) in the spacing collar (62) outside extend to inside spacing slide (64) of adjacent spacing collar (62) inboard.
10. A low noise roots vacuum pump as claimed in claim 1, wherein: the support ring (61) is arranged in the through hole (5) and fixedly connected with the inner wall of the through hole (5), and the output end of the pump body (3) penetrates through the limiting ring (62) and is fixedly connected with the limiting ring (62).
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| CN202211262836.XA CN115450911B (en) | 2022-10-15 | 2022-10-15 | Roots vacuum pump of low noise |
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| CN202211262836.XA CN115450911B (en) | 2022-10-15 | 2022-10-15 | Roots vacuum pump of low noise |
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| CN115450911B (en) | 2023-05-09 |
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