CN100406729C - Casing of pump unit and pump device having thereof - Google Patents
Casing of pump unit and pump device having thereof Download PDFInfo
- Publication number
- CN100406729C CN100406729C CNB2006100588165A CN200610058816A CN100406729C CN 100406729 C CN100406729 C CN 100406729C CN B2006100588165 A CNB2006100588165 A CN B2006100588165A CN 200610058816 A CN200610058816 A CN 200610058816A CN 100406729 C CN100406729 C CN 100406729C
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- pump
- unit
- shell
- sound barrier
- noise
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- 230000004888 barrier function Effects 0.000 claims abstract description 49
- 210000000635 valve cell Anatomy 0.000 claims description 18
- 210000004027 cell Anatomy 0.000 claims 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/11—Kind or type liquid, i.e. incompressible
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
- F05D2260/962—Preventing, counteracting or reducing vibration or noise by means of "anti-noise"
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The pump casing 20 of a pump unit of the pump device constituted by fastening the pump unit to a valve unit by a fastening bolt has a sound barrier 40. Due to the sound barrier 40, the pump casing 20 can cover the fastening bolt inserted into a fastening member insertion hole 35 to insulate noise generated by the fastening bolt. The sound barrier 40 has a constitution not merely covering the fastening bolt but covering the fastening bolt to insulate noise generated by the fastening bolt. Thus, this can prevent noise caused by the fastening bolt from being emitted and transferred to outside.
Description
Technical field
The present invention relates to pump-unit, particularly relate to the shell of its pump unit.
Background technique
Figure 16 is the stereogram of the pump-unit 1 of expression prior art.Pump-unit 1 shown in the non-patent literature 1 is the compound pump-unit that is called the tandem type pump that is arranged side by side two plate axial piston pumps on axial direction.Pump-unit 1 has two pump unit 2,3 and valve cell 4.Each pump unit 2,3 has pump casing 5,6 respectively, has cylinder block, piston and swash plate etc. respectively in each pump casing 5,6.Valve cell 4 has valve shell 7, holds each cylinder block of each pump unit 2,3 in valve shell 7, holds two valve plates slidably.
Each pump unit 2,3 utilizes a plurality of connecting screw rods 10 to be connected with valve cell 4.Each connects with screw rod 10 sometimes with respect to the n secondary frequencies composition generation resonance of the fundamental frequency of pump, produces dither, sends noise.Like this each connects with screw rod 10 and can expose outside the shell 5,6 of pump, and the noise of generation directly radiates to the outside.
Non-patent literature 1: " hydraulic technology October number increase number of the edition ", Japanese industry publishing house puts down on October 5th, 12, the 39th volume, No. 12
Summary of the invention
In the compound pump-unit 1 of prior art shown in Figure 16, the screw rod 10 that connects usefulness as mentioned above has the possibility that noise takes place, and it is the structure of the noise of reason with the screw rod 10 of this connection usefulness that hope can have minimizing.
The objective of the invention is to, pump casing that can reduce noise and the pump-unit that possesses described shell are provided.
The shell of pump of the present invention unit, be meant the shell that possesses by sandwich valve unit, two pump unit and the described pump unit that utilizes connector element to connect the pump-unit that each pump unit and valve cell constitute, stopping over and be fixed in the pump unit in end of described connector element, and stops over and be fixed in valve cell in the other end; This shell has noise that can interdict the connector element generation and the sound barrier that covers connector element.
Adopt the present invention, the shell that the described pump unit of the pump-unit that two pump unit and valve cell connect and compose with connector element possesses has sound barrier.By this sound barrier is set, shell can interdict the noise ground covering connector element that connector element takes place.By means of this, can prevent that the noise that connector element causes from radiating, transmitting to the outside.
Again, the invention is characterized in that it is the noise of the following frequency band of the above 6kHz of 2kHz at least that described sound barrier can interdict.
Adopt the present invention, utilize sound barrier, can interdict the noise of the following frequency band of the above 6kHz of 2kHz.The noise of the following frequency band of the above 6kHz of 2kHz is ear-piercing noise for the people, and this noise can interdict.Like this, not only can interdict the noise that connector element takes place, and can interdict the noise ear-piercing the people.
Again, the invention is characterized in that the remaining part of the shell of described sound barrier and pump unit fuses, on pump casing, form the cylindrical portion that covers connector element, and form to such an extent that the rigidity of the shell of pump unit is improved.
Adopt the present invention, utilize the remaining part of sound barrier and shell, form the cylindrical portion that covers connector element, and the rigidity of shell is improved.By means of this, can prevent the vibration of shell itself, comprise the vibration of sound barrier.
Again, the invention is characterized in that described sound barrier will dispose the space and the outside of connector element and strictly separate.
Adopt the present invention, utilize sound barrier, the space and the outside of configuration connector element strictly can be separated.Drench on pump-unit even therefore comprise the water of rainwater, can prevent that also this hydropexis is in the space of configuration connector element.
Again, pump-unit of the present invention is characterized in that, possesses the shell of described pump unit.
Adopt the present invention, can realize the suitable pump-unit that noise is little.
The invention effect
Adopt the present invention, can prevent that the noise that connector element causes from radiating to the outside.Thereby, can turn into the low noise of pump-unit and contribution.
Again, adopt the present invention, not only can interdict the noise that connector element takes place, and can interdict the noise with lower frequency, therefore can make pump-unit environment on every side become fine the above 6kHz of the ear-piercing 2kHz of people.
Again, adopt the present invention, can prevent the vibration of shell itself, comprise the vibration of sound barrier, can prevent the noise that the vibration of shell itself causes, comprise the noise that the vibration of sound barrier causes.
Again, adopt the present invention, can prevent that hydropexis from the space of configuration connector element, can prevent to get rusty.
Again, adopt the present invention, can realize the suitable pump-unit that noise is little.
Description of drawings
Fig. 1 is the stereogram of the pump casing 20 of the present invention's one example.
Fig. 2 is the stereogram from the observed pump casing 20 of the direction different with Fig. 1.
Fig. 3 is the stereogram from the direction observed pump casing 20 different with Fig. 1 and Fig. 2.
Fig. 4 is the stereogram that expression possesses the pump-unit 21 of pump casing 20.
Fig. 5 is the front view of expression pump casing 20.
Fig. 6 is the left surface figure from the pump casing 20 of the left side observation of Fig. 5.
Fig. 7 is the right hand view from the pump casing 20 of the right side observation of Fig. 5.
Fig. 8 is the planimetric map from the pump casing 20 of the upside observation of Fig. 5.
Fig. 9 is the right hand view from the pump casing 20 of the downside observation of Fig. 5.
Figure 10 is the back elevation from the pump casing 20 of the inboard observation of the paper of Fig. 5.
Figure 11 is the sectional drawing from the pump casing 20 of the section line A-A observation of Fig. 5.
Figure 12 is the sectional drawing from the pump casing 20 of the section line B-B observation of Fig. 5.
Figure 13 is the sectional drawing from the pump casing 20 of the section line C-C observation of Fig. 6.
Figure 14 is the sectional drawing that near connector element inserting hole 35 amplifications of pump casing 20 are represented.
Figure 15 is the plotted curve of the screening audio fruit of expression sound barrier 40.
Figure 16 is the stereogram of the pump-unit 1 of expression prior art.
Symbol description
20,27 pump casings
21 pump-units
22,23 pump unit
24 valve cells
25,26 servo units
30 valve shells
35 connector element inserting holes
36 connection screw rods
40 sound barriers
44 containing spaces
60 housing main bodies
61 cylindrical portion
Embodiment
Fig. 1 is the stereogram of the pump casing 20 of the present invention's one example.Fig. 2 is bright 20 a stereogram outside the observed pump of the direction different with Fig. 1.Fig. 3 is the stereogram from the direction observed pump casing 20 different with Fig. 1 and Fig. 2.Fig. 4 is the stereogram that expression possesses the pump-unit 21 of pump casing 20.In Fig. 1, pump casing 20 is expressed as sees left surface, front and back.In Fig. 2, pump casing 20 is expressed as sees front, left surface and bottom surface.In Fig. 3, pump casing is expressed as and sees right flank, the back side and bottom surface.The structure of reduced representation except pump casing 20 in Fig. 4.Pump-unit 21 is the pump-units that are arranged on for example industry equipment and building machinery, is to be called the compound pump-unit that two pump portions of tandem type pump etc. constitute.Two pump portions of combination are not particularly limited, but are for example plate axial piston pump in this example.This plate axial piston pump also can be the pump of constant volume type, but is variable displacement pump in the present invention.
Pump-unit 21 has two pump unit 22,23 and valve cell 24, also has two servo units 25,26.Each 22,23 sandwich valve unit, pump unit, 24 coaxial being set up in parallel on axial direction is connected to valve cell 24.Each servo unit 25,26 is arranged at each 22,23 top, pump unit, is connected in each pump unit 22,23.
Each pump unit 22,23 has pump casing 20,27 respectively, holds component parts such as forming cylinder, piston and swash plate in each pump casing 20,27 respectively. Pump casing 20,27 structures of each pump unit 22,23 are identical, and balanced configuration is contained in the also balanced configuration on axial direction of member part in the pump casing 20,27 on axial direction.In Fig. 4, reveal the left surface and the back side of the pump casing 20 of right side configuration in the drawings, also reveal the front of the pump casing 27 of left side configuration in the drawings.
Valve cell 24 has valve shell 30, in valve shell 30, accommodates slidably two valve plates of formation in each cylinder block of each pump unit 22,23 respectively.Each servo unit 25,26 has servo shell 31,32 respectively, accommodates in each servo shell 31,32 to form the servomechanism that makes swash plate inclination usefulness.
In each pump casing 20,27, separate in a circumferential direction on axial direction, to connect on the position of certain intervals and form a plurality ofly, in this example, be 4 connector element inserting hole 35.A pump casing 20 is inserted logical 4 connections screw rod 36 as connector element respectively at each inserting hole 35 respectively, each connection is stopped over an end of screw rod 36 and is fixed in pump casing 20, and each connects to stop over the other end of screw rod 36 and is fixed in valve shell 30, is connected in valve shell 30.Each connects the structure of stopping over fixing with the two end part of screw rod 36 and adopts for example to stop over and be connected structure with the head of screw rod 36, will connect and directly be tightened in the structure on pump casing 20 and the valve shell with screw rod 36 and will be tightened in any one structure realization that is connected in the fixing structure of being stopped over the nut component on the screw rod 36 on pump casing 20 and valve shell 30.
Again, another pump casing 27 utilizes the structure identical with a pump casing 20 to be fixed on the valve shell 30.Utilize such method, each pump unit 22,23 and valve cell 24 utilize an end to stop over to be fixed in the connection of being fixed in valve cell 24 of stopping over of pump unit 22,23, the other end to interconnect with screw rod 36.The sound barrier 40 that connects the part formation of using screw rod 36, the intermediate portion between its two end part to utilize pump casing 20,21 is from outer side covers.
Be arranged on the valve plate on the valve cell 24 form with storage as the work of working fluid with the oil sources of oil, promptly for example the inhalation port that is connected of fuel tank and with the port that spues that is connected as for example driver of working with oily supply destination.The piston chamber that valve plate forms the piston embedding that is in extended travel is connected in inhalation port, and the piston chamber that is in the piston embedding of the stroke of shrinking back is connected in the structure of the port that spues.Thereby the transmission of power of prime mover is to running shaft, and during the cylinder block rotation, because the shift reciprocately of each piston, work is drunk up from fuel tank with oil, offers driver.
Again, be arranged at the servomechanism of servo unit 25, can be to the swash plate driving of fascinating, with the angle of inclination of the supporting surface of the swash plate that changes pump unit 22.By means of this, can change the capacity of pump.Like this, utilize the formation of another part of a pump unit 22, connected servo unit 26 and valve cell 24, can realize another pump portion, this another pump portion has identical structure.Running shaft with pump portion of a pump unit 22 is given prominence to from pump casing 20, and prime mover is given running shaft with transmission of power.Running shaft with pump portion of another pump unit 23 is connected in valve cell on the running shaft of the pump portion with a pump unit 22.By means of this, form the structure of two pump portion interlocks.
Fig. 5 is the front view of expression pump casing 20.Fig. 6 is the left surface figure from the pump casing 20 of the left side observation of Fig. 5.Fig. 7 is the right hand view from the pump casing 20 of the right side observation of Fig. 5.Fig. 8 is the planimetric map from the pump casing 20 of the upside observation of Fig. 5.Fig. 9 is the right hand view from the pump casing 20 of the downside observation of Fig. 5.Figure 10 is the back elevation from the pump casing 20 of the inboard observation of the paper of Fig. 5.Figure 11 is the sectional drawing from the pump casing 20 of the section line A-A observation of Fig. 5.Figure 12 is the sectional drawing from the pump casing 20 of the section line B-B observation of Fig. 5.Figure 13 is the sectional drawing from the pump casing 20 of the section line C-C observation of Fig. 6.Therefore as mentioned above, each pump casing 20,27 has same structure, describes as representative with it below with reference to a pump casing 21.
Pump casing 20 forms containing space 44, accommodates the component part that comprises running shaft, cylinder block, each piston and swash plate at this containing space 44.This containing space 44 connects on axial direction, with opening portion 49 openings that form on opening portion 48 that forms on the left side face 45 as the part of the axial direction of pump casing 20 and the right side face 46 as axial direction the other end of pump casing 20.Pump casing 20 and the right side face 46 relative valve shells 30 that are connected in.Containing space 44 connects on axial direction, at each side face 45,46 opening, therefore can make the rotary shaft branch outstanding to the outside, can realize the connection between the running shaft of the transmission of power of prime mover and two pumps, cylinder block and valve plate are set to and can slide simultaneously.
Again, containing space 44 usefulness are formed at as opening portion 50 openings on the planar surface portion 47 of the upper end portion of pump casing 20, can make swash plate partly outstanding.By means of this, the servomechanism of the enough servo units 25 of energy drives swash plate.In the face portion 51 of pump casing 20 and back side portion 52, form the hole 53,54 that is connected containing space 44 respectively again.Each hole the 53, the 54th flows to the discharge pipe port that fuel tank is used from oil spills such as cylinder block, pistons by pipe arrangement (not shown).
On pump casing 20, keeping at a distance in a circumferential direction around containing space 44 forms 4 connector element inserting holes 35 that are independent of containing space.Each connector element inserting hole 35 connects on axial direction, at each side face 45,46 opening.Insert as mentioned above to lead to connect in these connector element inserting holes 35 and use screw rod 36, pump casing 20 is connected in valve shell 30.Thereby pump casing 20 has the sound barrier 40 of the connection of covering with screw rod 36.In other words, pump casing 20 has housing main body 60 and the sound barrier 40 that forms containing space 44.
As described in above-mentioned background technique part, connect with screw rod 36 and sometimes dither is taken place in nth harmonic (frequency) the composition resonance of the fundamental frequency of pump portion, thereby produce noise.In this example, pump casing 20 has can interdict the sound barrier 40 that connects the noise that produces with screw rod 36, even connect with screw rod 36 noise takes place, and can prevent that also this noise from radiating to the outside.
Figure 14 is the sectional drawing that near connector element inserting hole 35 amplifications of pump casing 20 are represented.Sound barrier 40 at the circumferencial direction two end part 66,67 and except the remaining part of the sound barrier 40 of pump casing 20, be that housing main body 60 fuses.By means of this, on pump casing 20, form and cover the cylindrical portion 61 that connects with screw rod 36.Thereby pump casing 20 forms and can improve rigidity, particularly can improve the structure that the rigidity that connects the part of using screw rod 26 is set.
Again, sound barrier 40, its thickness size T1～T4, t1～t4 according to the decision of the axial direction size of pump casing 20 for can interdict more than the 2kHz at least, the size of the noise of the following frequency band of 6kHz.Again, sound barrier 40 fuses with housing main body 60, and configuration connects the space with screw rod, and just connector element inserting hole 35 forms and the outside structure that tightly separates.
Each connector element inserting hole 35 has and is roughly columned hole, and axial direction intermediate portion 35a has than axial direction two end part 35b, internal diameter that 35c is big.Otherwise, it seems that for sound barrier 40 sound barrier 40 thickness size T1～T4 of intermediate portion 70 on its axial direction forms littler than the thickness size t1～t4 at two end part 72,73.Again, sound barrier 40 its thickness size T2, T3, t2, t3 away from the intermediate portion 65 of the locational circumferencial direction of housing main body 60 form littler than thickness size T1, T4, t1, the t4 at the two end part 66,67 of the locational circumferencial direction of close housing main body 60.
Each connector element inserting hole 35 forms by casting in this example.Utilize casting to form like this and can reduce the material use amount, shorten process time.
Adopt this example, two pump unit 22,23 have sound barrier 40 with the shell 20,27 that valve cell 24 is used as the pump-unit 21 that connects and composes with screw rod 36 being connected of connector element.Sound barrier 40 can interdict the fastening noise ground that takes place with screw rod from the outside and cover connection screw rod 36.Sound barrier 40 not only covers to connect uses screw rod, and formation can be interdicted the covered structure that connects the noise that takes place with screw rod 36.By means of this, can prevent to connect the noise that produces with screw rod and radiate, transmit to the outside.Thereby can turn into the low noise of pump-unit 21 and contribution.
Figure 15 is the plotted curve of the screening audio fruit of expression sound barrier 40.In Figure 15, transverse axis is the frequency of noise, and the longitudinal axis is the noise sound pressure level at predetermined point of observation.Again, the sound pressure level that noise in the structure of sound barrier 40 is set in Figure 15 represents do not have the connection of sound barrier 40 to represent with solid line 71 with the sound pressure level of the noise of the exposed structure of screw rod with solid line 70.Can know from the curve of Figure 15 and to find out that sound barrier 40 not only covers and connects with screw rod 36, and can interdict and connect the noise that takes place with screw rod 36.
Again, as can be seen from Figure 15, sound barrier 40 can interdict the noise of the frequency band that 2kHz is above, 6kHz is following.The noise of the frequency band that 2kHz is above, 6kHz is following is a noise ear-piercing for the people, and sound barrier can interdict so ear-piercing noise.Like this, not only connecting the noise that takes place with screw rod 36 can interdict, and also can interdict the noise for the ear-piercing frequency of people.And as can be seen from Figure 15, sound barrier 40 also can interdict the noise above the frequency band of 6kHz.Thereby the environment around the pump-unit 21 is improved greatly, and for example can making, operator's processing ease carries out.
Again, the remaining part of sound barrier 40 and pump casing 20,21, be that housing main body 60 forms one, form and cover the cylindrical portion 61 that connects with screw rod 36, can improve the rigidity of pump casing, particularly can improve the rigidity that connects with the part of screw rod 36 is set.By means of this, can prevent the vibration of pump casing 20 itself, comprise the vibration of sound barrier 40.By means of this, not only can prevent the noise of the higher harmonics (frequency) that 2kHz is above, and can prevent the noise of the low-order harmonic (frequency) that 1kHz is above, 2kHz is following.
And the thickness size T1～T4 of intermediate portion does forr a short time than the thickness size t1～t4 at two end part on sound barrier 40 its axial directions.Again, sound barrier 40 its thickness size T2, T3, t2, t3 away from the locational circumferencial direction intermediate portion of housing main body 60 do forr a short time than thickness size T1, T4, t1, the t4 at the two end part of the locational circumferencial direction of close housing main body 60.Like this, compare, can do the volume of sound barrier 40 little as far as possible, and can access high as far as possible rigidity with the situation of doing the full depth size identical.Therefore can realize in light weight and help the pump case of the low noiseization of pump-unit.
Again, sound barrier 40 will dispose connect with the space of screw rod 36, just tightly separate connector element inserting hole 35 and outside.Like this, drench pump-unit 21, also can prevent this hydropexis, can prevent to get rusty in connector element inserting hole 35 even comprise water such as rainwater.
Owing to have the pump casing 20,27 of such sound barrier 40, can realize the suitable pump-unit 21 that noise is little.
Above-mentioned example only is an illustration of the present invention, and the present invention can make change to structure.
Claims (5)
1. the shell of a pump unit, described shell is meant the shell that is possessed by sandwich valve unit, two pump unit and the described pump unit that utilizes connector element to connect the pump-unit that each pump unit and valve cell constitute, stop over and be fixed in the pump unit in end of described connector element, and stop over and be fixed in valve cell in the other end, it is characterized in that
Described pump cell enclosure has noise that can interdict the connector element generation and the sound barrier that covers connector element.
2. the shell of pump according to claim 1 unit is characterized in that, it is the noise of the following frequency band of the above 6kHz of 2kHz at least that described sound barrier can interdict.
3. the shell of pump according to claim 1 unit, it is characterized in that, the remaining part of the shell of described sound barrier and pump unit fuses, and forms the cylindrical portion that covers connector element on pump casing, and forms to such an extent that the rigidity of the shell of pump unit is improved.
4. the shell of pump according to claim 1 unit is characterized in that, described sound barrier will dispose the space and the outside of connector element and strictly separate.
5. a pump-unit is characterized in that, possesses the shell of each the described pump unit in the claim 1～4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005195226A JP4149469B2 (en) | 2005-07-04 | 2005-07-04 | Pump unit casing and pump device including the same |
| JP195226/2005 | 2005-07-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1892026A CN1892026A (en) | 2007-01-10 |
| CN100406729C true CN100406729C (en) | 2008-07-30 |
Family
ID=37597162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100588165A Active CN100406729C (en) | 2005-07-04 | 2006-02-28 | Casing of pump unit and pump device having thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4149469B2 (en) |
| KR (1) | KR100764110B1 (en) |
| CN (1) | CN100406729C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322237A (en) * | 2020-03-06 | 2020-06-23 | 中国北方车辆研究所 | Oil pump shell noise-reducing vibration-absorbing structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718832A (en) * | 1985-03-11 | 1988-01-12 | Man Design Co., Ltd. | Electromagnetic reciprocating pump |
| CN1062404A (en) * | 1990-12-10 | 1992-07-01 | 东北重型机械学院秦皇岛分校 | Multi-stage cascaded, open-loop, axial plunger pump |
| US6331101B2 (en) * | 1996-06-28 | 2001-12-18 | Thomas Industries Inc. | Two-cylinder pump |
| CN2546655Y (en) * | 2002-04-11 | 2003-04-23 | 大连海密梯克密封泵有限公司 | Serial shield pump |
| WO2004020823A1 (en) * | 2002-09-02 | 2004-03-11 | Milos Kopecky | Hydraulic pump comprising an independent drive unit |
| CN2690620Y (en) * | 2004-04-13 | 2005-04-06 | 吴泰 | Silencing compressor shell |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000130346A (en) | 1998-10-27 | 2000-05-12 | Fujikura Rubber Ltd | Electromagnetic diaphragm pump |
| JP2001115961A (en) | 1999-10-18 | 2001-04-27 | Orion Mach Co Ltd | Sound insulating mechanism for vacuum developing device |
| KR100523269B1 (en) * | 2002-12-12 | 2005-10-24 | 임락복 | Low noise external gear pump with floating gear housing |
| KR200354620Y1 (en) | 2004-04-09 | 2004-06-30 | (주)씨에스이 | Pump having coil spring for protection against vibration |
-
2005
- 2005-07-04 JP JP2005195226A patent/JP4149469B2/en active Active
-
2006
- 2006-01-31 KR KR1020060009290A patent/KR100764110B1/en active IP Right Grant
- 2006-02-28 CN CNB2006100588165A patent/CN100406729C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718832A (en) * | 1985-03-11 | 1988-01-12 | Man Design Co., Ltd. | Electromagnetic reciprocating pump |
| CN1062404A (en) * | 1990-12-10 | 1992-07-01 | 东北重型机械学院秦皇岛分校 | Multi-stage cascaded, open-loop, axial plunger pump |
| US6331101B2 (en) * | 1996-06-28 | 2001-12-18 | Thomas Industries Inc. | Two-cylinder pump |
| CN2546655Y (en) * | 2002-04-11 | 2003-04-23 | 大连海密梯克密封泵有限公司 | Serial shield pump |
| WO2004020823A1 (en) * | 2002-09-02 | 2004-03-11 | Milos Kopecky | Hydraulic pump comprising an independent drive unit |
| CN2690620Y (en) * | 2004-04-13 | 2005-04-06 | 吴泰 | Silencing compressor shell |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070004409A (en) | 2007-01-09 |
| CN1892026A (en) | 2007-01-10 |
| JP4149469B2 (en) | 2008-09-10 |
| KR100764110B1 (en) | 2007-10-09 |
| JP2007009882A (en) | 2007-01-18 |
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