CN101988488A - Noise reduction mechanism of pump and vacuum pump using same - Google Patents
Noise reduction mechanism of pump and vacuum pump using same Download PDFInfo
- Publication number
- CN101988488A CN101988488A CN2009103050957A CN200910305095A CN101988488A CN 101988488 A CN101988488 A CN 101988488A CN 2009103050957 A CN2009103050957 A CN 2009103050957A CN 200910305095 A CN200910305095 A CN 200910305095A CN 101988488 A CN101988488 A CN 101988488A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- air inlet
- pedestal
- anger
- giving vent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The invention discloses a noise reduction mechanism of a pump. The mechanism comprises an upper cover and a base, wherein the upper cover is provided with an air inlet hole and an air outlet hole; the air inlet hole and the air outlet hole are jointed with an air inlet hole and an air outlet hole at the cylinder bottom of a cylinder; the base is provided with an air inlet hole and an air outlet hole; the upper cover is covered on the base and forms at least one air inlet silencing cavity and at least one air outlet silencing cavity, which are isolated from each other, through a diaphragm wall; the air inlet hole on the upper cover and the air inlet hole on the base are communicated with the air inlet silencing cavity respectively; and the air outlet hole on the upper cover and the air outlet hole on the base are communicated with the air outlet silencing cavity respectively. Compared with the prior art, air current is silenced repeatedly through the air inlet silencing cavity and the air outlet silencing cavity in the process of entering and exiting the cylinder, so that noise produced when a piston drives the cylinder and a valve plate flaps between the air inlet holes and the air outlet holes at the cylinder bottom of the cylinder and on the upper cover can be lowered greatly.
Description
Technical field
The present invention relates to a kind of pump, be meant a kind of noise reducing mechanism of pump especially and adopt the vacuum pump of this noise reducing mechanism.
Background technique
Piston type vacuum pump of the prior art generally includes main body rack, motor, eccentric stiffener or crank mechanism, piston mechanism, cylinder, valve block, loam cake, the driven by motor eccentric stiffener rotates, rotatablely moving of motor is converted into straight line motion, drive by eccentric stiffener that piston to-and-fro motion in cylinder is air-breathing to carry out, the exhaust action, thereby work such as vacuumize.
The piston type vacuum pump is in when work and since piston promote cylinder and valve block the cylinder cylinder bottom and on the beating action that covers into and out of between the pore can produce very big noise, up to the present go back neither one solution preferably.
With reference to Fig. 1, be a kind of noise reducing mechanism of the prior art, that is to say the loam cake of vacuum pump, comprise a suction tude 10 ', a steam outlet pipe 20 ', an inlet hole 30 ' and an air outlet hole 40 ', its noise reduction effect only is embodied in suction tude 10 ' and steam outlet pipe 20 ', but not only length is shorter for it, and only in fact its noise reduction effect is very limited in the tube road.
Summary of the invention
Main purpose of the present invention is to overcome noise that pump in the prior art produces and is difficult for the shortcoming that reduces when work, a kind of noise reducing mechanism of pump is provided and adopts the vacuum pump of this noise reducing mechanism, can reduce the noise that pump produces when work greatly.
The present invention adopts following technological scheme:
A kind of noise reducing mechanism of pump, it comprises
One loam cake covers on this and is provided with into and out of pore, should being connected mutually into and out of pore into and out of pore and cylinder cylinder bottom;
One pedestal, this pedestal are provided with an inlet hole and an air outlet hole;
This loam cake covers on this pedestal and by a partition wall and forms isolated mutually at least one air inlet deadending cavity and at least one silencing cavity of giving vent to anger, inlet hole that covers on being somebody's turn to do and the inlet hole on this pedestal are connected with this air inlet deadending cavity respectively, and the air outlet hole on the air outlet hole that covers on this and this pedestal is connected with this silencing cavity of giving vent to anger respectively.
According to a better embodiment of the present invention, also comprise the noise reduction road of giving vent to anger, an air inlet noise reduction road and of being located on the pedestal, the inlet end in this air inlet noise reduction road is the inlet hole on the described pedestal, and insert in the described air inlet deadending cavity outlet side in this air inlet noise reduction road; This outlet side of giving vent to anger the noise reduction road is the air outlet hole on the described pedestal, and this inlet end of giving vent to anger the noise reduction road is inserted in the described silencing cavity of giving vent to anger.
According to a better embodiment of the present invention, the inner chamber in described air inlet noise reduction road is made up of the big chamber with relatively large internal diameter that a loculus with less relatively internal diameter and that is positioned at the airflow direction front end is positioned at the airflow direction rear end; The inner chamber in the described noise reduction road of giving vent to anger is made up of the loculus with relative less internal diameter that a big chamber and with relatively large internal diameter that is positioned at the airflow direction front end is positioned at the airflow direction rear end.
According to a better embodiment of the present invention, the inner chamber in described air inlet noise reduction road comprises that a loculus with less relatively internal diameter and that is positioned at the airflow direction front end is positioned at the big chamber with relatively large internal diameter of airflow direction rear end, and this big chamber is provided with a refluxing chamber; Described inner chamber of giving vent to anger the noise reduction road comprises that a big chamber and with relatively large internal diameter that is positioned at the airflow direction front end is positioned at the loculus with relative less internal diameter of airflow direction rear end, and this big chamber is provided with a refluxing chamber.
According to a better embodiment of the present invention, the inner chamber in described air inlet noise reduction road increases gradually along the airflow direction internal diameter; The inner chamber in the described noise reduction road of giving vent to anger dwindles gradually along the airflow direction internal diameter.
According to a better embodiment of the present invention, the cross section of described partition wall is broken line shape or curvilinerar figure.
According to a better embodiment of the present invention, be provided with a backing plate between described loam cake and the described pedestal, the common described air inlet deadending cavity and the silencing cavity of giving vent to anger of forming of this loam cake, this backing plate and this pedestal.
According to a better embodiment of the present invention, cover on described and be provided with positioning protrusion, described pedestal be provided with one with the suitable positioning groove of this positioning convex.
A kind of vacuum pump, comprise a main body rack, a motor, an eccentric stiffener, a piston mechanism, a cylinder, a valve block and a noise reducing mechanism, this motor connects this eccentric stiffener, this eccentric stiffener connects this piston mechanism, this piston mechanism connects this cylinder, this valve block is located between this cylinder cylinder bottom and this noise reducing mechanism folding with control inlet, outlet passage, and this noise reducing mechanism comprises:
One loam cake covers on this and is provided with into and out of pore, should being connected mutually into and out of pore into and out of pore and cylinder cylinder bottom;
One pedestal, this pedestal are provided with an inlet hole and an air outlet hole;
This loam cake covers on this pedestal and by a partition wall and forms isolated mutually at least one air inlet deadending cavity and at least one silencing cavity of giving vent to anger, inlet hole that covers on being somebody's turn to do and the inlet hole on this pedestal are connected with this air inlet deadending cavity respectively, and the air outlet hole on the air outlet hole that covers on this and this pedestal is connected with this silencing cavity of giving vent to anger respectively.
By the above-mentioned description of this invention as can be known, compare the noise reducing mechanism of a kind of pump of the present invention and adopt the vacuum pump of this noise reducing mechanism to have following beneficial effect with prior art:
One, air-flow is in entering cylinder and in the process in the discharge cylinder, because via air inlet deadending cavity and the repeatedly noise reduction of silencing cavity of giving vent to anger, can reduce greatly since piston promote cylinder and valve block the cylinder cylinder bottom and on the noise that produces into and out of the action of the beating between the pore that covers;
Two, on pedestal, be provided with air inlet noise reduction road and the noise reduction road of giving vent to anger, air-flow all need further strengthen noise reduction of the present invention via the noise reduction once more in this air inlet noise reduction road and the noise reduction road of giving vent to anger when entering noise reducing mechanism of the present invention and discharging noise reducing mechanism of the present invention;
Three, the cross section of partition wall is broken line shape or curvilinerar figure, can make air inlet deadending cavity and the more silencer wall of the interior formation of the silencing cavity of giving vent to anger to make the noise reduction number of times increase, and further strengthens noise reduction of the present invention;
Four, be provided with backing plate between loam cake and the pedestal, loam cake, backing plate and pedestal form the air inlet deadending cavity and the silencing cavity of giving vent to anger jointly, can make that the noise reduction cavity space is bigger, the vary in size various demands of different types of pump of noise of satisfied generation.
Description of drawings
Fig. 1 is the perspective view of the noise reducing mechanism of a kind of pump of the prior art;
Fig. 2 is the perspective view of the noise reducing mechanism of a kind of pump of the present invention;
Fig. 3 is the structural representation of the pedestal of the noise reducing mechanism of a kind of pump of the present invention;
Fig. 4 is the structural representation of the loam cake of the noise reducing mechanism of a kind of pump of the present invention;
Fig. 5 is the air inlet noise reduction road of the embodiment one of the noise reducing mechanism of a kind of pump of the present invention and the sectional structure schematic representation in the noise reduction road of giving vent to anger;
Fig. 6 is the air inlet noise reduction road of the embodiment two of the noise reducing mechanism of a kind of pump of the present invention and the sectional structure schematic representation in the noise reduction road of giving vent to anger;
Fig. 7 is the air inlet noise reduction road of the embodiment three of the noise reducing mechanism of a kind of pump of the present invention and the sectional structure schematic representation in the noise reduction road of giving vent to anger;
Fig. 8 is the structural representation of the pedestal of the embodiment four of the noise reducing mechanism of a kind of pump of the present invention;
Fig. 9 is the structural representation of the loam cake of the embodiment four of the noise reducing mechanism of a kind of pump of the present invention;
Figure 10 is the structural representation of the pedestal of the embodiment five of the noise reducing mechanism of a kind of pump of the present invention;
Figure 11 is the structural representation of the loam cake of the embodiment five of the noise reducing mechanism of a kind of pump of the present invention;
Figure 12 is the decomposition texture schematic representation of the embodiment six of the noise reducing mechanism of a kind of pump of the present invention;
Figure 13 is the three-dimensional decomposition texture schematic representation of a kind of vacuum pump of the present invention.
Embodiment
Embodiment one
With reference to Fig. 2, Fig. 3 and Fig. 4, the noise reducing mechanism 100 of a kind of pump of the present invention comprises a loam cake 10 and a pedestal 20, and loam cake 10 is provided with an inlet hole 11 and an air outlet hole 12, and inlet hole 11 and air outlet hole 12 are connected into and out of pore mutually with the cylinder cylinder bottom; Pedestal 20 is provided with and stretches out the noise reduction road 40 of giving vent to anger, the outer air inlet noise reduction roads 30 and of pedestal 20, and air inlet noise reduction road 30 is provided with an inlet end 31 and an outlet side 32, and the noise reduction road 40 of giving vent to anger is provided with an inlet end 41 and an outlet side 42.
With reference to Fig. 5, the inner chamber in air inlet noise reduction road 30 is made up of the big chamber 34 with relatively large internal diameter that a loculus with less relatively internal diameter 33 and that is positioned at the airflow direction front end is positioned at the airflow direction rear end, when air-flow enters in the process in big chamber 34 via loculus 33, have certain buffer function, thereby reach noise reduction.The inner chamber in noise reduction road 40 of giving vent to anger is made up of the loculus with relative less internal diameter 44 that a big chamber 43 and with relatively large internal diameter that is positioned at the airflow direction front end is positioned at the airflow direction rear end, when air-flow enters the process of loculus 44 from big chamber 43, have certain buffer function, thereby reach noise reduction.
Embodiment two
With reference to Fig. 6, this embodiment is basic identical with the principle and the structure of embodiment one, difference is: the inner chamber in air inlet noise reduction road 30 comprises that a loculus with less relatively internal diameter 35 and that is positioned at the airflow direction front end is positioned at the big chamber 36 with relatively large internal diameter of airflow direction rear end, and this big chamber 36 is provided with a refluxing chamber 37, when air-flow enters in the process in big chamber 36 via loculus 35, buffering via refluxing chamber 37 has certain buffer function, thereby reaches noise reduction.The inner chamber in noise reduction road 40 of giving vent to anger comprises that a big chamber 45 and with relatively large internal diameter that is positioned at the airflow direction front end is positioned at the loculus with relative less internal diameter 46 of airflow direction rear end, and this big chamber 45 is provided with a refluxing chamber 47, when air-flow enters the process of loculus 46 from big chamber 45, buffering via refluxing chamber 47 has certain buffer function, thereby reaches noise reduction.
Embodiment three
With reference to Fig. 7, this embodiment is basic identical with the principle and the structure of embodiment one, and difference is: the inner chamber 38 in air inlet noise reduction road 30 increases gradually along the airflow direction internal diameter, when air-flow flows in inner chamber 38, have certain buffer function, thereby reach noise reduction.The inner chamber 48 in noise reduction road 40 of giving vent to anger dwindles gradually along the airflow direction internal diameter, when air-flow flows in inner chamber 48, has certain buffer function, thereby reaches noise reduction.
Embodiment four
With reference to Fig. 8 and Fig. 9, a kind of noise reducing mechanism of pump comprises a loam cake 10 and a pedestal 20, and loam cake 10 is provided with an inlet hole 11 and an air outlet hole 12, and inlet hole 11 and air outlet hole 12 are connected into and out of pore mutually with the cylinder cylinder bottom; Pedestal 20 is provided with an inlet hole 31 and an air outlet hole 42.
When air-flow enters noise reducing mechanism of the present invention and from the process that air outlet hole 42 flows out via inlet hole 31, air-flow carries out repeatedly noise reduction in the air inlet deadending cavity 23 and the silencing cavity 24 of giving vent to anger, can reduce greatly since piston promote cylinder and valve block the cylinder cylinder bottom and on the noise that produces into and out of the action of the beating between the pore that covers.
Embodiment five
With reference to Figure 10 and Figure 11, this embodiment is basic identical with the principle and the structure of embodiment one, difference is: barricade 22 is for having the bending structure of two 90 ° of bendings, make air inlet deadending cavity 23 form a big chamber 231 and a loculus 232, make the silencing cavity 24 of giving vent to anger form a big chamber 241 and a loculus 242, and the loam cake 10 90 ° of bonnets that turn clockwise are combined on the pedestal 20, the inlet hole 11 of loam cake 10 and the big chamber 231 of air inlet deadending cavity 23 are communicated with, the big chamber 241 of the air outlet hole 12 of loam cake 10 and the silencing cavity 24 of giving vent to anger is communicated with.
When air-flow enters noise reducing mechanism of the present invention and from the process that air outlet hole 42 flows out, owing to have more silencer wall in the air inlet deadending cavity 23 and the silencing cavity 24 of giving vent to anger, makes that the sound-deadening and noise-reducing effect is better via inlet hole 31.
Embodiment six
With reference to Figure 12, this embodiment is basic identical with the principle and the structure of embodiment one, difference is: be provided with backing plate 60 between loam cake 10 and the pedestal 20, loam cake 10, backing plate 20 and the pedestal 30 common air inlet deadending cavity and the silencing cavity of giving vent to anger of forming, can make that the noise reduction cavity space is bigger, the vary in size various demands of different types of pump of noise of satisfied generation.
Embodiment seven
With reference to Figure 13, a kind of vacuum pump, comprise a main body rack 51, a motor 52, an eccentric stiffener 53, a piston mechanism 54, a cylinder 55, a valve block 56 and a noise reducing mechanism 100, motor 52 connects eccentric stiffener 53, eccentric stiffener 53 connects piston mechanism 54, piston mechanism 54 connects cylinder 55, and valve block 56 is located between cylinder 55 cylinder bottoms and the noise reducing mechanism 100 to control the folding of inlet, outlet passage.Noise reducing mechanism 100 is identical with noise reducing mechanism in embodiment one, embodiment two, embodiment three or the embodiment four.
With reference to Fig. 2, Fig. 3, Fig. 4 and Figure 13, a kind of vacuum pump of the present invention in use, drive eccentric stiffener 53 runnings by motor 52, the rotation of motor 52 is converted into straight line motion, drive piston mechanism 54 to-and-fro motion in cylinder 55 by eccentric stiffener 53, by valve block 56 advancing at cylinder 55 cylinder bottoms, the inlet hole 11 of air outlet hole and loam cake 10, reciprocating action between the air outlet hole 12, the realization vacuum pump is bled, the exhaust purpose, in this process, when piston mechanism 54 moves in cylinder 55 and valve block 56 pat advancing of cylinder 55 cylinder bottoms back and forth, the inlet hole 11 of air outlet hole and loam cake 10, can produce noise during air outlet hole 12, just can realize the noise reduction purpose by noise reducing mechanism 100 this moment:
Air-flow enters air inlet noise reduction road 30 via the inlet end 31 in air inlet noise reduction road 30, inner chamber via air inlet noise reduction road 30 carries out the noise reduction first time, air-flow flows in the air inlet deadending cavity 23 from the outlet side 32 in air inlet noise reduction road 30 then, in air inlet deadending cavity 23, carry out the noise reduction second time, air-flow enters cylinder 55 from the inlet hole 11 on the loam cake 10 then, enter the silencing cavity 24 of giving vent to anger through the air outlet hole 12 from the loam cake 10 behind the cylinder 55, in the silencing cavity 24 of giving vent to anger, carry out noise reduction for the third time, air-flow enters the noise reduction road 40 of giving vent to anger via the inlet end 41 in the noise reduction road 40 of giving vent to anger then, carries out discharging from the outlet side 42 in the noise reduction road 40 of giving vent to anger behind the 4th noise reduction via the inner chamber in the noise reduction road 40 of giving vent to anger.
With reference to following table, be the contrast table of the noise reducing mechanism in the background technique shown in the employing accompanying drawing 1 under equal test condition with the noise figure of the pump of the noise reducing mechanism that adopts the specific embodiment of the invention one, embodiment two, embodiment three, embodiment four and embodiment five.
Table one noise figure contrast table
As seen from the above table, the noise reducing mechanism of a kind of pump of the present invention and adopt the vacuum pump of this noise reducing mechanism to have preferable noise reduction.
Above-mentioned only is several embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (10)
1. the noise reducing mechanism of a pump, it is characterized in that: it comprises
One loam cake covers on this and is provided with into and out of pore, should being connected mutually into and out of pore into and out of pore and cylinder cylinder bottom;
One pedestal, this pedestal are provided with an inlet hole and an air outlet hole;
This loam cake covers on this pedestal and by a partition wall and forms isolated mutually at least one air inlet deadending cavity and at least one silencing cavity of giving vent to anger, inlet hole that covers on being somebody's turn to do and the inlet hole on this pedestal are connected with this air inlet deadending cavity respectively, and the air outlet hole on the air outlet hole that covers on this and this pedestal is connected with this silencing cavity of giving vent to anger respectively.
2. the noise reducing mechanism of a kind of pump as claimed in claim 1, it is characterized in that: also comprise the noise reduction road of giving vent to anger, an air inlet noise reduction road and of being located on the pedestal, the inlet end in this air inlet noise reduction road is the inlet hole on the described pedestal, and insert in the described air inlet deadending cavity outlet side in this air inlet noise reduction road; This outlet side of giving vent to anger the noise reduction road is the air outlet hole on the described pedestal, and this inlet end of giving vent to anger the noise reduction road is inserted in the described silencing cavity of giving vent to anger.
3. as the noise reducing mechanism of a kind of pump as described in the claim 2, it is characterized in that: the inner chamber in described air inlet noise reduction road is made up of the big chamber with relatively large internal diameter that a loculus with less relatively internal diameter and that is positioned at the airflow direction front end is positioned at the airflow direction rear end; The inner chamber in the described noise reduction road of giving vent to anger is made up of the loculus with relative less internal diameter that a big chamber and with relatively large internal diameter that is positioned at the airflow direction front end is positioned at the airflow direction rear end.
4. the noise reducing mechanism of a kind of pump as claimed in claim 2, it is characterized in that: the inner chamber in described air inlet noise reduction road comprises that a loculus with less relatively internal diameter and that is positioned at the airflow direction front end is positioned at the big chamber with relatively large internal diameter of airflow direction rear end, and this big chamber is provided with a refluxing chamber; Described inner chamber of giving vent to anger the noise reduction road comprises that a big chamber and with relatively large internal diameter that is positioned at the airflow direction front end is positioned at the loculus with relative less internal diameter of airflow direction rear end, and this big chamber is provided with a refluxing chamber.
5. the noise reducing mechanism of a kind of pump as claimed in claim 2, it is characterized in that: the inner chamber in described air inlet noise reduction road increases gradually along the airflow direction internal diameter; The inner chamber in the described noise reduction road of giving vent to anger dwindles gradually along the airflow direction internal diameter.
6. the noise reducing mechanism of a kind of pump as claimed in claim 1, it is characterized in that: the cross section of described partition wall is broken line shape or curvilinerar figure.
7. as the noise reducing mechanism of claim 1 or 2 or 3 or 4 or 5 or 6 described a kind of pumps, it is characterized in that: be provided with a backing plate between described loam cake and the described pedestal, the common described air inlet deadending cavity and the silencing cavity of giving vent to anger of forming of this loam cake, this backing plate and this pedestal.
8. vacuum pump, comprise a main body rack, a motor, an eccentric stiffener, a piston mechanism, a cylinder, a valve block and a noise reducing mechanism, this motor connects this eccentric stiffener, this eccentric stiffener connects this piston mechanism, this piston mechanism connects this cylinder, this valve block is located between this cylinder cylinder bottom and this noise reducing mechanism folding with control inlet, outlet passage, and it is characterized in that: this noise reducing mechanism comprises:
One loam cake covers on this and is provided with into and out of pore, should being connected mutually into and out of pore into and out of pore and cylinder cylinder bottom;
One pedestal, this pedestal are provided with an inlet hole and an air outlet hole;
This loam cake covers on this pedestal and by a partition wall and forms isolated mutually at least one air inlet deadending cavity and at least one silencing cavity of giving vent to anger, inlet hole that covers on being somebody's turn to do and the inlet hole on this pedestal are connected with this air inlet deadending cavity respectively, and the air outlet hole on the air outlet hole that covers on this and this pedestal is connected with this silencing cavity of giving vent to anger respectively.
9. a kind of vacuum pump as claimed in claim 8, it is characterized in that: also comprise the noise reduction road of giving vent to anger, an air inlet noise reduction road and of being located on the pedestal, the inlet end in this air inlet noise reduction road is the inlet hole on the described pedestal, and insert in the described air inlet deadending cavity outlet side in this air inlet noise reduction road; This outlet side of giving vent to anger the noise reduction road is the air outlet hole on the described pedestal, and this inlet end of giving vent to anger the noise reduction road is inserted in the described silencing cavity of giving vent to anger.
10. a kind of as claimed in claim 8 or 9 vacuum pump is characterized in that: be provided with a backing plate between described loam cake and the described pedestal, the common described air inlet deadending cavity and the silencing cavity of giving vent to anger of forming of this loam cake, this backing plate and this pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103050957A CN101988488A (en) | 2009-07-31 | 2009-07-31 | Noise reduction mechanism of pump and vacuum pump using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103050957A CN101988488A (en) | 2009-07-31 | 2009-07-31 | Noise reduction mechanism of pump and vacuum pump using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101988488A true CN101988488A (en) | 2011-03-23 |
Family
ID=43745207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103050957A Pending CN101988488A (en) | 2009-07-31 | 2009-07-31 | Noise reduction mechanism of pump and vacuum pump using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988488A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313918A (en) * | 2016-04-26 | 2017-11-03 | 高永弹 | A kind of miniature high flow capacity motor |
| CN109072918A (en) * | 2016-03-30 | 2018-12-21 | 莱宝有限公司 | Vacuum pump with muffler |
| CN109386506A (en) * | 2018-09-28 | 2019-02-26 | 安徽环科泵阀有限公司 | A kind of centrifugal pump Noise insulati on device and its centrifugal pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2849195Y (en) * | 2005-11-14 | 2006-12-20 | 重庆宗申技术开发研究有限公司 | Secondary air make up filter |
| JP2007002743A (en) * | 2005-06-23 | 2007-01-11 | Honda Motor Co Ltd | Seal device in air cleaner of engine |
| CN2910243Y (en) * | 2006-04-20 | 2007-06-13 | 王永强 | Oxygen wetting and feeding siliencer |
| KR20080038784A (en) * | 2006-10-31 | 2008-05-07 | 한라공조주식회사 | Muffler for air conditioner of vehicles |
| CN201262142Y (en) * | 2008-09-22 | 2009-06-24 | 佛山市广顺电器有限公司 | Air-intake silencing device of compressor |
| CN201474922U (en) * | 2009-07-31 | 2010-05-19 | 厦门科际精密器材有限公司 | Noise reduction mechanism of pump |
-
2009
- 2009-07-31 CN CN2009103050957A patent/CN101988488A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007002743A (en) * | 2005-06-23 | 2007-01-11 | Honda Motor Co Ltd | Seal device in air cleaner of engine |
| CN2849195Y (en) * | 2005-11-14 | 2006-12-20 | 重庆宗申技术开发研究有限公司 | Secondary air make up filter |
| CN2910243Y (en) * | 2006-04-20 | 2007-06-13 | 王永强 | Oxygen wetting and feeding siliencer |
| KR20080038784A (en) * | 2006-10-31 | 2008-05-07 | 한라공조주식회사 | Muffler for air conditioner of vehicles |
| CN201262142Y (en) * | 2008-09-22 | 2009-06-24 | 佛山市广顺电器有限公司 | Air-intake silencing device of compressor |
| CN201474922U (en) * | 2009-07-31 | 2010-05-19 | 厦门科际精密器材有限公司 | Noise reduction mechanism of pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072918A (en) * | 2016-03-30 | 2018-12-21 | 莱宝有限公司 | Vacuum pump with muffler |
| US11274668B2 (en) | 2016-03-30 | 2022-03-15 | Leybold Gmbh | Vacuum pump having a silencer |
| CN107313918A (en) * | 2016-04-26 | 2017-11-03 | 高永弹 | A kind of miniature high flow capacity motor |
| CN109386506A (en) * | 2018-09-28 | 2019-02-26 | 安徽环科泵阀有限公司 | A kind of centrifugal pump Noise insulati on device and its centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201474922U (en) | Noise reduction mechanism of pump | |
| US6692238B2 (en) | Muffler of compressor | |
| EP1797810A3 (en) | Vacuum cleaner and intake port unit thereof | |
| CN104728079B (en) | Compressor and its vent silencer | |
| CN101988488A (en) | Noise reduction mechanism of pump and vacuum pump using same | |
| CN102979696B (en) | Double inlet efficiency air pump | |
| CN106122013B (en) | A kind of compressor with rolling rotor | |
| CN207847950U (en) | A kind of compressor sound attenuation assembly, compressor and air conditioner | |
| JP2006029322A (en) | Hermetic compressor | |
| CN111963409B (en) | Air suction silencer | |
| JP2585147Y2 (en) | Concrete pump gate housing | |
| CN209761729U (en) | Compact oil-gas secondary separation type air compressor | |
| KR200434433Y1 (en) | 2-way function Vacuum Pump with 2 air inlet | |
| CN202056022U (en) | Integrated vacuum generator | |
| CN218151401U (en) | Noise reduction type gear pump | |
| CN203847390U (en) | Vacuum pressure combined pump body | |
| CN210889316U (en) | Rotary vane compressor with backpressure structure | |
| CN212429149U (en) | Rotary swash plate type compressor rear cover and compressor | |
| CN205422881U (en) | Resonant silencer | |
| CN200958411Y (en) | Engine silencer of vehicle | |
| CN217002282U (en) | Noise elimination jar body, electric vacuum pump assembly and vehicle | |
| CN213478615U (en) | Double-end noise reduction compressed air valve | |
| CN203560066U (en) | Liquid rotating pump | |
| CN109268241B (en) | Reciprocating air compressor cylinder body and reciprocating air compressor | |
| CN214036027U (en) | Silencer structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |