CN111852822B - Vibration isolation and noise reduction device and air pump component with same - Google Patents
Vibration isolation and noise reduction device and air pump component with same Download PDFInfo
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- CN111852822B CN111852822B CN202010766449.4A CN202010766449A CN111852822B CN 111852822 B CN111852822 B CN 111852822B CN 202010766449 A CN202010766449 A CN 202010766449A CN 111852822 B CN111852822 B CN 111852822B
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- noise reduction
- vibration isolation
- air pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0044—Pulsation and noise damping means with vibration damping supports
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- General Engineering & Computer Science (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a vibration isolation and noise reduction device and an air pump with the same, wherein the vibration isolation and noise reduction device is provided with a bottom plate and a vibration isolation and noise reduction mechanism arranged on the bottom plate, the vibration isolation and noise reduction mechanism comprises a mounting flange, a plurality of fixing rods sleeved on the periphery of the mounting flange and a cylindrical spring sleeved on the fixing rods, the fixing rods are fixed on the bottom plate, the mounting flange is sleeved on the fixing rods in a sliding manner, the upper ends of the cylindrical springs are fixed on the upper parts and the lower ends of the fixing rods and fixedly connected with the mounting flange, and a space is reserved between the mounting flange and the bottom plate. According to the invention, the vibration isolation and noise reduction mechanism is used for supporting the air pump, the cylindrical spring takes the fixed rod as a supporting and guiding mechanism, and has smaller rigidity and better elasticity, and better vibration isolation effect of longitudinal vibration; the circular through groove of the mounting flange is internally provided with the annular elastic pad, so that the vibration of the air pump in the horizontal direction is weakened due to the buffering of the annular elastic pad, and the noise reduction effect is realized.
Description
Technical Field
The invention relates to the technical field of air pumps, in particular to a vibration isolation and noise reduction device and an air pump component with the vibration isolation and noise reduction device.
Background
The air pump is very extensive in industrial production, and it generally provides high-pressure gas through circulating compressed air, at compressed gas's in-process, and the internal component of air pump inevitably can produce the vibration, and then sends the noise, influences the staff that is located around the air pump, can cause the staff to concentrate, influences production efficiency, can influence staff's healthy even.
For example, the air pump applied to the indoor oxygen supply system has relatively large vibration when working, relatively obvious resonance when being arranged on the shell, vibration is transmitted to the shell, and the shell is of a thin-wall structure and is easy to be excited by force and sound to generate resonance, thereby causing noise and radiating outwards, and simultaneously seriously affecting the stability of the air pump when working for a long time.
The air pump in the existing indoor oxygen supply system is generally fixed on a bottom plate connected with a shell, and the vibration reduction effect is realized through a spring arranged at the bottom of an air pump foot seat of the air pump, and the weight of the air pump is directly born by the spring at the bottom and the vibration of the air pump is absorbed by the spring, so that the vibration transmitted to the shell from the bottom plate is reduced; in order to support the weight of the air pump, the spring is required to have larger rigidity so as to ensure that the air pump keeps certain levelness, the spring with larger rigidity has poor absorption effect on vibration compared with the spring with smaller rigidity, but the rigidity of the spring is required to meet certain requirements to support the air pump due to the limitation of the vibration reduction structure of the air pump at present, so that the vibration absorption effect is poor, and larger noise is easy to cause.
Disclosure of Invention
In order to solve the problems, the invention provides a vibration isolation and noise reduction device.
The invention adopts the following technical scheme:
the utility model provides a vibration isolation noise reduction device, is equipped with bottom plate (1) and installs vibration isolation noise reduction mechanism on bottom plate (1), vibration isolation noise reduction mechanism includes mounting flange (3) and wears to overlap in peripheral a plurality of dead levers (6) of mounting flange and sleeve cylinder spring (7) on the dead lever, and dead lever (6) are fixed on bottom plate (1), and mounting flange (3) slip wears to overlap on the dead lever, and upper end fixed upper portion, lower extreme fixed connection mounting flange (3) of cylinder spring (7) are fixed in dead lever (6), and have the interval between mounting flange (3) and bottom plate (1).
In the vibration isolation and noise reduction device, the lower end of the cylindrical spring (7) is fixedly connected with the mounting flange (3) through the plurality of lower locating pins (10), pin holes are formed in the upper ends of the lower locating pins (10), the lower end of the cylindrical spring (7) penetrates through the pin holes of the lower locating pins (10), and the lower end of the lower locating pins (10) penetrates through the mounting flange (3) and is fastened through nuts.
In the vibration isolation and noise reduction device, the anti-interference groove (2) is correspondingly formed in the bottom plate (1) below the lower locating pin (10).
In the vibration isolation and noise reduction device, the upper end of the cylindrical spring (7) is fixed on the upper part of the fixed rod (6) through the upper gasket (9), the positioning nut (14) and the upper positioning pin (11), and the upper gasket (9) is sleeved on the fixed rod (6) and is positioned between the two positioning nuts (14) in threaded connection with the fixed rod (6); the lower end of the upper locating pin (11) is provided with a pin hole, the upper end of the cylindrical spring (7) passes through the pin hole of the upper locating pin (11), and the upper end of the upper locating pin (11) is fastened by a nut.
In the vibration isolation and noise reduction device, the mounting flange (3) is used for penetrating through a hole of the fixed rod (6) to be provided with the annular elastic pad (12), and the inner diameter of the annular elastic pad (12) is larger than the outer diameter of the fixed rod (6).
In the vibration isolation and noise reduction device, the mounting flange (3) is used for penetrating through the perforation of the fixed rod (6) to form the circular through groove (4), an inner step is formed by the inner circumference of the circular through groove (4) in a way of being wide at the upper part and narrow at the lower part, an outer step is formed by the outer circumference of the annular elastic pad (12) in a way of being wide at the upper part and narrow at the lower part, the annular elastic pad (12) is nested in the circular through groove (4), and the outer step is attached to the inner step of the circular through groove (4).
In the vibration isolation and noise reduction device, a lower gasket (8) is further arranged at the circular through groove (4) of the mounting flange (3), the lower gasket (8) is provided with a through hole with the inner diameter smaller than the outer diameter of the annular elastic pad (12), the lower gasket (8) is sleeved on the fixed rod (6) in a penetrating manner and is attached and fixed with the upper surface of the mounting flange (3), and the through hole of the lower gasket (8) is coaxially arranged with the circular through groove (4); preferably, the lower end of the annular elastic pad (12) extends out of the circular through groove (4).
In the vibration isolation and noise reduction device, a fixing rod fastening nut (13) is arranged at the upper end face of each fixing rod (6) positioned on the bottom plate (1).
Above-mentioned vibration isolation noise reduction device still is equipped with stop gear, stop gear is including setting up spacing seat (15) and spacing protruding (5) in the mounting flange (3) outside, spacing seat (15) are equipped with spacing groove (16) of opening towards spacing protruding (5), spacing protruding (5) are mounting flange (3) outwards extension's arch, perhaps the arch on mounting flange (3) is directly fixed, in spacing groove (16) are stretched into in spacing protruding (5), the size of spacing groove (16) and the flexible range limit value phase-match of cylinder spring (7).
The invention also provides an air pump component with the vibration isolation and noise reduction device, which comprises an air pump and the vibration isolation and noise reduction device, wherein air pump foot seats (18) at two ends of the air pump are respectively fixed on a mounting flange (3) arranged on the vibration isolation and noise reduction device.
Compared with the prior art, the invention has the following beneficial effects:
The vibration isolation and noise reduction device has the vibration isolation function of longitudinal vibration and the vibration reduction and noise reduction function of horizontal vibration, and the vibration isolation refers to the isolation of the longitudinal vibration of the air pump and the bottom plate fixed on the shell, so that the vibration isolation effect of the longitudinal vibration of the air pump and the shell is realized; the noise reduction means that the horizontal vibration of the air pump is buffered and absorbed through the elastic pad, so that the vibration reduction and noise reduction effects are realized. The vibration isolation and noise reduction device supports the air pump through the mounting flange, a plurality of fixing rods sleeved on the periphery of the mounting flange and a vibration isolation and noise reduction mechanism formed by cylindrical springs sleeved on the fixing rods, the cylindrical springs take the fixing rods as supporting and guiding mechanisms, the mounting flange is spaced from the bottom plate, longitudinal vibration of the air pump is absorbed by the cylindrical springs, the vibration of the air pump is prevented from being transmitted to the shell through the bottom plate, resonance is avoided, and therefore vibration isolation is achieved. A mounting flange suit for installing the air pump is on the dead lever and fix the lower extreme at cylindrical spring, and is provided with annular elastic pad in the circular logical inslot of mounting flange for the vibration of the horizontal direction of air pump weakens owing to the buffering of annular elastic pad, thereby realizes the effect of making an uproar falls.
Drawings
FIG. 1A is a schematic diagram of a vibration isolation and noise reduction device of the present invention;
FIG. 1B is a partial cross-sectional view of the vibration isolation and noise reduction device of the present invention;
fig. 2A is an enlarged view of a region G in fig. 1B;
fig. 2B is an enlarged view of region H in fig. 1B;
Fig. 3 is a schematic structural view of the air pump with vibration isolation and noise reduction device of the present invention.
The main reference numerals:
100-vibration isolation and noise reduction device;
The device comprises a bottom plate 1, an interference-preventing groove 2, a mounting flange 3, a circular through groove 4, a limiting protrusion 5, a fixing rod 6, a cylindrical spring 7, a lower gasket 8, an upper gasket 9, a lower positioning pin 10, an upper positioning pin 11, an annular elastic pad 12, a fixing rod fastening nut 13, a positioning nut 14, a limiting seat 15 and a limiting groove 16; 17-air pump, 18-air pump foot seat.
Detailed Description
The vibration isolation and noise reduction device and the air pump component with the vibration isolation and noise reduction device of the invention are described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1A and 1B are schematic structural views of a vibration isolation and noise reduction device according to the present invention. In this embodiment, the vibration isolation and noise reduction device 100 is suitable for an air pump installed on a casing, and has vibration isolation and noise reduction effects, and includes a base plate 1 having a supporting effect and a vibration isolation and noise reduction mechanism installed on the base plate 1, wherein:
The vibration isolation and noise reduction device 100 is fixed to the cabinet through the bottom plate 1. On the basis of meeting the load-bearing requirement, the bottom plate 1 is preferably in a hollow structure (for example, a square through hole is formed in the middle part) so as to reduce the weight of the bottom plate 1.
The vibration isolation and noise reduction mechanism comprises a mounting flange 3, a plurality of fixing rods 6 penetrating through the periphery of the mounting flange 3 and a cylindrical spring 7 penetrating through the fixing rods 6, wherein the fixing rods 6 are fixed on a bottom plate 1, the mounting flange 3 is used for fixedly mounting an air pump 17, the air pump is slidably penetrated through the two fixing rods 6, the upper end of the cylindrical spring 7 is fixed on the upper portion and the lower end of the fixing rods 6 and fixedly connected with the mounting flange 3, a space is reserved between the mounting flange 3 and the bottom plate, and the space is not smaller than the amplitude of longitudinal vibration of the air pump 17 during operation. The weight of the air pump 17 is transmitted to the cylindrical spring 7 through the mounting flange 3, and the longitudinal vibration generated during the operation of the air pump 17 can be absorbed by the cylindrical spring 7, so that the transmission to the bottom plate 1 is avoided, and the longitudinal vibration of the air pump 17 is isolated from the machine shell, thereby realizing the longitudinal vibration isolation function.
Further, referring to fig. 2A and 2B, the lower end of the cylindrical spring 7 is fixed on the mounting flange 3 by a plurality of lower positioning pins 10, the upper end of the lower positioning pins 10 is provided with pin holes, the lower end of the cylindrical spring 7 passes through the pin holes of the lower positioning pins 10, and the lower end of the lower positioning pins 10 passes through the mounting flange 3 and is fastened by nuts; the upper end of the cylindrical spring 7 is fixed on the upper part of the fixed rod 6 through an upper gasket 9, a positioning nut 14 and an upper positioning pin 11, the upper gasket 9 is sleeved on the fixed rod 6 and positioned between the two positioning nuts 14, and the positioning nuts 14 are in threaded connection with the fixed rod 6, so that the upper gasket 9 is fixed on the upper part of the fixed rod 6; the lower end of the upper locating pin 11 is provided with a pin hole, the upper end of the cylindrical spring 7 passes through the pin hole of the upper locating pin 11, and the upper end of the upper locating pin 11 is fastened by a nut, so that the cylindrical spring 7 is limited between the upper gasket 9 and the mounting flange 3.
Because dead lever 6 and mounting flange 3 are rigid parts, the horizontal direction's that the during operation of air pump 17 produced vibration can't be absorbed by rigid parts, and rigid parts collision can produce the noise, and simultaneously when air pump 17 longitudinal vibration is great, the nut of lower locating pin 10 can touch bottom plate 1, and produce the noise, in order to buffering horizontal direction's vibration and vertical great vibration, mounting flange 3 is used for wearing to set up annular elastic pad 12 in the perforation of cover dead lever 6, annular elastic pad 12's internal diameter is greater than the external diameter of dead lever 6 for annular elastic pad 12 can slide from top to bottom along dead lever 6, and annular elastic pad 12 is the annular rubber pad of preference. Specifically, the mounting flange 3 is used for penetrating the perforation of the fixed rod 6 and is a circular through groove 4, an inner step is formed by the inner circumference of the circular through groove 4 in a way of being wide at the upper part and narrow at the lower part, an outer step is formed by the outer circumference of the annular elastic pad 12 in a way of being wide at the upper part and narrow at the lower part, the annular elastic pad 12 is nested in the circular through groove 4, and the outer step is attached to the inner step of the circular through groove 4. In this way, horizontal and longitudinal vibrations can be isolated or damped while reducing noise.
Further, in order to prevent the annular elastic pad 12 from sliding out of the circular through groove 4 of the mounting flange 3, a lower gasket 8 is further arranged at the circular through groove 4 of the mounting flange 3, the lower gasket 8 is provided with a through hole with the inner diameter smaller than the outer diameter of the annular elastic pad 12, the lower gasket 8 sleeved on the fixing rod 6 is attached to the upper surface of the mounting flange 3, and the through hole of the lower gasket 8 is coaxially arranged with the circular through groove 4; the lower gasket 8 is pressed and fixed with the mounting flange 3 through the lower locating pin 10, meanwhile, the lower gasket 8 presses the upper end face of the annular elastic pad 12, the annular elastic pad 12 is limited, and meanwhile, the cylindrical spring 7 is limited between the upper gasket 9 and the lower gasket 8 (the mounting flange 3).
Preferably, each fixing rod 6 is provided with a fixing rod fastening nut 13 at an upper end surface of the base plate 1 for reinforcing the strength of the fixing rod 6.
Further, an interference preventing groove 2 is correspondingly formed on the bottom plate 1 below the lower positioning pin 10, and is used for preventing a nut arranged at the lower end of the lower positioning pin 10 from colliding with the bottom plate 1 to generate noise in the operation of the air pump; the diameter and depth of the interference preventing groove 2 are determined according to the size of the nut mounted at the lower end of the lower positioning pin 10 and the range of the vibration longitudinal vibration of the air pump 17. Preferably, the lower end of the annular elastic pad 12 protrudes out of the circular through groove 4, and when the air pump 17 generates a large longitudinal vibration, the annular elastic pad 12 contacts the bottom plate 1 to prevent the mounting flange 3 from directly contacting the bottom plate 1 or the nut of the lower positioning pin 10 from directly contacting the bottom plate 1 to generate vibration noise.
In the installation, the vibration isolation and noise reduction mechanism in the vibration isolation and noise reduction device 100 of the present invention is installed in a sequence from bottom to top, and the embodiment shown in fig. 1A and 1B is taken as an example for explanation, that is, four fixing rods 6 are installed at a predetermined position of the bottom plate 1, and four fixing rods 6 are fastened on the bottom plate 1 respectively by adopting fixing rod fastening nuts 13; the annular elastic pads 12 are installed in the circular through grooves 4 at the two ends of the mounting flange 3, the lower gaskets 8 are respectively clung to the upper end faces of the circular through grooves 4 at the two ends of the mounting flange 3, the circular through grooves 4 of the mounting flange 3 and the through holes of the lower gaskets 8 are coaxial, the mounting flange 3 and the lower gaskets 8 are penetrated together by the lower positioning pins 10, the lower ends of the cylindrical springs 7 are penetrated into the upper end pin holes of the lower positioning pins 10, the lower ends of the lower positioning pins 10 are screwed and fixed by nuts, the assembled mounting flange 3 and cylindrical springs 7 are sleeved on the fixing rods 6, the upper ends of the fixing rods 6 are sequentially sleeved with the set positioning nuts 14 and the upper gaskets 9, the upper gaskets 9 are fixed at the preset positions on the upper parts of the fixing rods 6, the upper positioning pins 11 penetrate through the upper gaskets 9, the upper ends of the cylindrical springs 7 penetrate into the lower end pin holes of the upper positioning pins 11, the upper ends of the upper positioning pins 11 are fixed on the upper gaskets 9 by the nuts, and the upper ends of the cylindrical springs 7 are fixed on the upper gaskets 9, so that the vibration isolation and noise reduction mechanism is installed.
Further, the vibration isolation and noise reduction device 100 is further provided with a limiting mechanism for limiting the longitudinal vibration amplitude of the mounting flange 3, so that the vibration isolation and noise reduction device 100 is prevented from being damaged due to the fact that the vibration amplitude of the mounting flange 3 along with the air pump 17 is too large under abnormal conditions. Referring to fig. 1A and 1B, the limiting mechanism includes a limiting seat 15 and a limiting protrusion 5, the limiting protrusion 5 and the limiting seat 15 are disposed on the outer side of the mounting flange 3 (the side far away from the air pump 17 in fig. 3), the limiting seat 15 is provided with a limiting groove 16 with an opening facing the limiting protrusion 5, the limiting protrusion 5 may be a protrusion extending outwards from the mounting flange 3 or a protrusion directly fixed on the mounting flange 3, the limiting protrusion 5 extends into the limiting groove 16, and the size of the limiting groove 16 is determined according to the maximum vibration amplitude in the working process of the air pump 17 (that is, the size of the limiting groove 16 is matched with the expansion amplitude limit value of the cylindrical spring 7).
Preferably, an elastic cushion layer is laid on the inner wall of the limit groove 16 to reduce noise generated by collision between the limit protrusion 5 and the inner wall of the limit groove 16.
The air pump with the vibration isolation and noise reduction device is used in an indoor oxygen supply system, as shown in fig. 3, the bottom plate 1 is fixed on a shell of the indoor oxygen supply system, air pump foot bases 18 at two ends of the air pump 17 are respectively fixed on the mounting flange 3 arranged in the vibration isolation and noise reduction device 100, when the air pump works, the vibration isolation and noise reduction device 100 isolates the longitudinal vibration of the air pump from the shell of the indoor oxygen supply system, the air pump and the shell are prevented from resonating, and meanwhile, the annular elastic pad 12 is arranged in the circular through groove 4 of the mounting flange 3, so that the vibration of the air pump in the horizontal direction is weakened due to the buffering of the annular elastic pad 12, the vibration isolation and noise reduction effect is realized, the stability of long-time work of the air pump is further ensured, the service life of the air pump and the shell is effectively prolonged, and the noise is effectively reduced.
Specifically, when the air pump 17 does not work, the upper end of the cylindrical spring 7 is fixed on the upper part of the fixed rod 6 through the upper gasket 9, the lower end of the cylindrical spring 7 is fixed on the lower gasket 8 and the mounting flange 3, the cylindrical spring 7 is in a stretching state and is used for bearing the weight of the air pump 17 mounted on the mounting flange 3, at the moment, the bottom of the mounting flange 3 is a certain distance away from the bottom plate 1, the air pump 17 is hung by the cylindrical spring 7, compared with a damping spring positioned at the bottom of the air pump, the rigidity of the cylindrical spring can be very small, because the lateral stress of the cylindrical spring is borne by the fixed rod 6 during vibration due to the guiding action of the fixed rod 6, the cylindrical spring only bears the longitudinal gravity of the air pump, and the damping spring at the bottom of the air pump only bears the lateral force generated during vibration besides the longitudinal gravity of the air pump, and the rigidity requirement of the damping spring is higher. When the air pump 17 works, the longitudinal vibration generated by the air pump 17 is transmitted to the cylindrical spring 7 through the mounting flange 3, the cylindrical spring 7 converts the longitudinal vibration into spring potential energy, so that the longitudinal vibration of the air pump 17 is isolated from the bottom plate 1, and when the longitudinal vibration of the air pump 17 is large, the annular elastic pad 12 contacts the bottom plate 1, and the buffering vibration reduction effect is achieved; the horizontal vibration of the air pump 17 is contacted with the fixed rod 6 through the annular spring pad 12, so as to play a role in buffering and vibration reduction. The cylindrical spring 7 is sleeved on the fixed rod 6, the fixed rod 6 plays a supporting and guiding role, and compared with the existing spring arranged at the bottom of the air pump foot seat 18 of the air pump 17, the cylindrical spring has smaller rigidity, so that the longitudinal vibration generated by the air pump 17 can be absorbed better; the horizontal vibration of the air pump 17 acts on the fixed rod 6 through the mounting flange 3, and the horizontal vibration generated by the air pump 17 is basically absorbed by the annular elastic pad 12 due to the buffer action of the annular elastic pad 12 positioned in the circular through groove 4 of the mounting flange 3, and meanwhile, the noise is reduced; the limiting mechanism is matched with the limiting boss 5 arranged on the mounting flange 3 through the limiting seat 15, so that the vibration amplitude of the mounting flange 3 is limited in a certain range, and the vibration amplitude of the air pump 17 is prevented from being too large to damage the vibration isolation noise reduction device 100.
It is apparent that the application object of the vibration isolation and noise reduction apparatus 100 of the present invention is not limited to the air pump 17, but can be applied to other devices that are prone to generate vibrations, and variations in the structural size and spatial layout of the apparatus due to the different sizes of the devices are also within the contemplation of the present invention.
The vibration isolation and noise reduction device and the air pump with the vibration isolation and noise reduction device have the following characteristics:
1) The vibration isolation and noise reduction device 100 supports the air pump through the vibration isolation and noise reduction mechanism formed by the mounting flange, a plurality of fixing rods sleeved on the periphery of the mounting flange and the cylindrical springs sleeved on the fixing rods, the cylindrical springs 7 take the fixing rods 6 as supporting and guiding mechanisms, the mounting flange 3 is spaced from the bottom plate, longitudinal vibration of the air pump is absorbed and isolated by the cylindrical springs, the vibration of the air pump is prevented from being transmitted to the machine shell through the bottom plate, resonance is avoided, and therefore vibration isolation is achieved, and compared with the existing vibration reduction springs arranged at the bottom of the air pump, the cylindrical springs 7 have smaller rigidity and better elasticity, and therefore better absorption effect of the longitudinal vibration is achieved; the mounting flange 3 for mounting the air pump is sleeved on the fixing rod 6 and fixed at the lower end of the cylindrical spring 7, and the annular elastic pad 12 is arranged in the circular through groove 4 of the mounting flange 3, so that the vibration in the horizontal direction of the air pump is weakened due to the buffering of the annular elastic pad 12, and the vibration isolation and noise reduction effects are realized.
2) The vibration isolation and noise reduction device 100 is provided with a limiting mechanism on the outer side of the mounting flange 3, namely, a limiting protrusion 5 arranged on the outer side of the mounting flange 3 stretches into a limiting groove 16 formed in the limiting seat 15, the amplitude of the vertical vibration of the mounting flange 3 is limited through the height of the limiting groove 16, and the vibration isolation and noise reduction device 100 is further protected from being damaged due to overlarge abnormal vibration amplitude.
3) The annular elastic pad 12 is matched with the circular through groove 4 of the mounting flange 3 through steps, the upper end of the annular elastic pad 12 is tightly pressed through the lower gasket 8, the annular elastic pad 12 is firmly limited in the circular through groove 4, the lower end of the annular elastic pad 12 extends out of the annular through groove 4, a buffer effect is achieved in the process that the cylindrical spring 7 stretches up and down along with the vibration of the air pump, and the mounting flange 3 is prevented from impacting the bottom plate 2 to generate vibration and noise.
3) The lower end of each cylindrical spring 7 is fixed on the mounting flange 3 through a lower locating pin 10, the lower part of the lower locating pin 10 is fixed through a nut, and an anti-interference groove 2 is correspondingly formed on the bottom plate 1 positioned below the lower locating pin 10, so that vibration and noise are prevented from being generated when the nut at the lower end of the lower locating pin 10 impacts the bottom plate 2 in the process that the cylindrical spring 7 stretches up and down along with the vibration of the air pump.
It will be appreciated by those skilled in the art that these examples are intended to illustrate the invention and not to limit the scope of the invention, and that various equivalent variations and modifications to the invention are within the scope of the present disclosure.
Claims (6)
1. The vibration isolation and noise reduction device is provided with a bottom plate (1) and a vibration isolation and noise reduction mechanism arranged on the bottom plate (1), and is characterized by comprising a mounting flange (3), a plurality of fixing rods (6) sleeved on the periphery of the mounting flange and a cylindrical spring (7) sleeved on the fixing rods, wherein the fixing rods (6) are fixed on the bottom plate (1), the mounting flange (3) is sleeved on the fixing rods in a sliding manner, the upper ends of the cylindrical springs (7) are fixed on the upper parts and the lower ends of the fixing rods (6) and fixedly connected with the mounting flange (3), and a space is reserved between the mounting flange (3) and the bottom plate (1);
the lower end of the cylindrical spring (7) is fixedly connected with the mounting flange (3) through a plurality of lower locating pins (10), pin holes are formed in the upper ends of the lower locating pins (10), the lower end of the cylindrical spring (7) penetrates through the pin holes of the lower locating pins (10), and the lower end of the lower locating pins (10) penetrates through the mounting flange (3) and is fastened by nuts;
An interference prevention groove (2) is correspondingly formed on the bottom plate (1) positioned below the lower positioning pin (10);
the mounting flange (3) is used for penetrating through a hole of the fixing rod (6) and is internally provided with an annular elastic pad (12), and the inner diameter of the annular elastic pad (12) is larger than the outer diameter of the fixing rod (6);
the mounting flange (3) is used for penetrating through the perforation of the fixing rod (6) to form a circular through groove (4), an inner step is formed by the inner circumference of the circular through groove (4) in a way of being wider at the upper part and narrower at the lower part, an outer step is formed by the outer circumference of the annular elastic pad (12), the annular elastic pad (12) is nested in the circular through groove (4), and the outer step is attached to the inner step of the circular through groove (4);
The circular through groove (4) of the mounting flange (3) is also provided with a lower gasket (8), the lower gasket (8) is provided with a through hole with the inner diameter smaller than the outer diameter of the annular elastic pad (12), the lower gasket (8) is sleeved on the fixed rod (6) in a penetrating way and is attached and fixed with the upper surface of the mounting flange (3), and the through hole of the lower gasket (8) is coaxially arranged with the circular through groove (4); the lower end of the annular elastic pad (12) extends out of the circular through groove (4).
2. The vibration isolation and noise reduction device according to claim 1, wherein the upper end of the cylindrical spring (7) is fixed on the upper part of the fixed rod (6) through an upper gasket (9), a positioning nut (14) and an upper positioning pin (11), and the upper gasket (9) is sleeved on the fixed rod (6) and is positioned between two positioning nuts (14) in threaded connection with the fixed rod (6); the lower end of the upper locating pin (11) is provided with a pin hole, the upper end of the cylindrical spring (7) passes through the pin hole of the upper locating pin (11), and the upper end of the upper locating pin (11) is fastened by a nut.
3. Vibration and noise reduction device according to claim 1 or 2, characterized in that each fixing rod (6) is provided with a fixing rod fastening nut (13) at the upper end face of the bottom plate (1).
4. The vibration isolation and noise reduction device according to claim 1 or 2, further comprising a limiting mechanism, wherein the limiting mechanism comprises a limiting seat (15) and a limiting protrusion (5) which are arranged on the outer side of the mounting flange (3), the limiting seat (15) is provided with a limiting groove (16) with an opening facing the limiting protrusion (5), the limiting protrusion (5) is a protrusion extending outwards of the mounting flange (3) or a protrusion directly fixed on the mounting flange (3), the limiting protrusion (5) extends into the limiting groove (16), and the size of the limiting groove (16) is matched with the expansion amplitude limit value of the cylindrical spring (7).
5. The vibration isolation and noise reduction device according to claim 3, further comprising a limiting mechanism, wherein the limiting mechanism comprises a limiting seat (15) and a limiting protrusion (5) which are arranged on the outer side of the mounting flange (3), the limiting seat (15) is provided with a limiting groove (16) with an opening facing the limiting protrusion (5), the limiting protrusion (5) is a protrusion extending outwards of the mounting flange (3) or a protrusion directly fixed on the mounting flange (3), the limiting protrusion (5) stretches into the limiting groove (16), and the size of the limiting groove (16) is matched with the expansion amplitude limit value of the cylindrical spring (7).
6. An air pump component with vibration isolation and noise reduction device, comprising an air pump and the vibration isolation and noise reduction device of any one of claims 1 to 5, wherein air pump foot seats (18) at two ends of the air pump are respectively fixed on a mounting flange (3) of the vibration isolation and noise reduction device.
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| CN202010766449.4A CN111852822B (en) | 2020-08-03 | 2020-08-03 | Vibration isolation and noise reduction device and air pump component with same |
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| CN202010766449.4A CN111852822B (en) | 2020-08-03 | 2020-08-03 | Vibration isolation and noise reduction device and air pump component with same |
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| CN111852822B true CN111852822B (en) | 2024-09-13 |
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