CN108468640A - A kind of emulsion pump high speed flat valve - Google Patents
A kind of emulsion pump high speed flat valve Download PDFInfo
- Publication number
- CN108468640A CN108468640A CN201810303949.7A CN201810303949A CN108468640A CN 108468640 A CN108468640 A CN 108468640A CN 201810303949 A CN201810303949 A CN 201810303949A CN 108468640 A CN108468640 A CN 108468640A
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- Prior art keywords
- valve
- spool
- circle
- center
- guide sleeve
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- 239000000839 emulsion Substances 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 238000010079 rubber tapping Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 12
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005213 imbibition Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Abstract
The invention belongs to hydraulic valve technology, specifically a kind of emulsion pump high speed flat valve.It solves the problems, such as to accurately control the emulsion pump to run at high speed, including shell, plunger cavity T is provided in shell, the both ends plunger cavity T are connect with liquid sucting valve I and tapping valve II respectively, the liquid sucting valve I includes sleeve, guide sleeve, spool, valve seat and spring, sleeve both ends are respectively arranged with guide sleeve and valve seat, spool is provided in guide sleeve, it is cased with spring on the outside of spool, spool outer end is contacted with valve seat, the spool outer end is streamlined structure, and the guide sleeve end of liquid sucting valve I is connected to plunger cavity T, and the valve seat end of liquid sucting valve I is oil inlet P；The tapping valve II is identical as liquid feed valve I structures, and the valve seat end of tapping valve II is connected to plunger cavity T, and the guide sleeve end of tapping valve II is oil return opening O.The present invention using it is specific it is streamlined reduce flowed friction, cavitation erosion and air pocket, greatly enhance the service life of valve, the response frequency of valve has reached 25Hz.
Description
Technical field
The invention belongs to hydraulic valve technology, specifically a kind of emulsion pump high speed flat valve.
Background technology
For underground coal mine fully-mechanized mining equipment mostly using emulsion as medium, emulsion pump is for hydraulic support discharge pressure liquid at present
The power-equipment of body, and the emulsion pump rotating speed used is 500~600r/min, it is the motor for 1500r/min by rotating speed
It is driven and is operated by gear reduction unit；Existing new emulsion pump design is to remove gear reduction unit, is directly driven with motor
Pump operating, the rotating speed of pump can then be up to 1500r/min, and such emulsion pump then needs frequency to be controlled for the fast valve of 25Hz
System, accurately controlling for valve is the key that pump runs well, since the response frequency of valve is very high and medium is emulsion, and then to valve
The quality requirement of core, the structure of spool, spool service life etc. require also can accordingly improve, the inner spool of valve is being moved through
It is also a big critical issue for overcoming liquid resistance in journey.
Current existing valve basic structure contacts, spool bottom between valve seat for face as shown in Figure 1, spool is cone valve
For tripod structure, and such valve cannot be used for the matched emulsion pump reason of the design and have：
(1) this kind of check valve highest response frequency is usually 500~600 times per minute, and the matched emulsion of the design
The rotating speed of pump is up to 1500r/min, this is the most important reason for carrying out the design；
(2) valve core structure of such valve is back taper structure, and when valve opens emulsion into fashionable, gas is easily formed around spool
Cave and vortex increase the resistance that spool is opened；
(3) such valve bottom is tripod structure, and other types of cone valve bottom is plate, the valve liquid of slab construction
It being easier that spool is caused to impact when inflow, the unstability for causing liquid to flow, tripod structure reduces such impact,
But affect the flowing of liquid；
(4) spool of such valve generally uses stainless steel material, and the quality of such spool can be heavier, and then also affects valve
The movement velocity of core also has a great impact to the response frequency of valve；
(5) for all hydraulic valves, one of the problem of service life is most critical, the service life of valve is largely
The upper service life depending on spool, for such valve when valve is closed, spool has prodigious impact force to valve when being contacted with valve seat
Core and valve seat all cause larger damage, influence valve service life.
A kind of suitable for the high speed flat valve of the emulsion pump to run at high speed therefore, it is necessary to invent, the present invention then proposes
A kind of novel high speed flat valve.
Invention content
The present invention provides a kind of emulsion pump high speed to solve the problems, such as to accurately control the emulsion pump to run at high speed
Flat valve.
The present invention takes following technical scheme：A kind of emulsion pump high speed flat valve, including shell are provided with column in shell
Chamber T is filled in, the both ends plunger cavity T are connect with liquid sucting valve I and tapping valve II respectively, and the liquid sucting valve I includes sleeve, guide sleeve, valve
Core, valve seat and spring, sleeve both ends are respectively arranged with guide sleeve and valve seat, and spool is provided in guide sleeve, is cased on the outside of spool
Spring, spool outer end are contacted with valve seat, and the spool outer end is streamlined structure, the guide sleeve end of liquid sucting valve I and column
Chamber T connections are filled in, the valve seat end of liquid sucting valve I is oil inlet P；The tapping valve II is identical as liquid feed valve I structures, tapping valve II
Valve seat end be connected to plunger cavity T, the guide sleeve end of tapping valve II is oil return opening O.
Further, streamlined structure includes curved section a, curved section b and curved section c, and curved section a includes with O5For circle
The heart, radius are the circular arc of 5mm, and respectively with O1And O2For the center of circle, radius is two sections of circular arcs of 17mm；Curved section b includes two sections
Respectively with O6And O9For the center of circle, radius is the arc section of 4mm；Curved section c includes two sections of symmetrical curves, wherein one section of curve includes
With O3For the center of circle, radius is the circular arc of 25mm, and with O7For the center of circle, radius is that the circular arc of 5mm is tangent；Another section of curve is with O4
For the center of circle, radius be 25mm circular arc with O8The circular arc for being 5mm for the center of circle, radius mutually suits；Wherein, three sections of curved section a
Two sections of circular arc centers of circle that the circular arc center of circle meets at point an O, curved section b meet at OO54 sections of circles of point an O ＇, curved section c on extended line
The arc center of circle meets at point O5, and center of circle O1With O2、O3With O4、O7With O8、O6With O9It is symmetrical about line OO' and its long line of delay, point O,
O ＇, O5In the centre symmetry line of spool, center of circle O5Away from spool bottommost 5mm, with O5For coordinate origin, i.e. O5(0,0), then
Remaining central coordinate of circle is：O (0,10), O'(0,18), O1(- 15, -16), O2(15, -16), O3(35,40), O4(- 35, -40),
O7(22,13), O8(- 22,13), O6(19,6), O9(- 19,6), (unit：Mm), when three sections of curves meet conditions above, liquid
Flowed friction it is minimum, the cavitation erosion of formation and air pocket are also minimum.Specific fairshaped structure keeps liquid flowing more smooth, liquid resistance
Power reduces, and the cavitation erosion generated and air pocket are also minimum, increase the service life of spool；Curved section a makes liquid be formed in advance to penetrate
Shape is flowed, vibration and noise caused by cavitation erosion caused by a fluid stream attenuates suddenly when reducing liquid inflow valve port；Curved section c makes liquid
When flowing, the friction between friction and liquid between liquid and spool wall surface reduces, to reduce being hindered along journey for liquid flowing
Power also makes the vortex formed around spool also minimum, keeps the open and close of valve more timely, and control is more accurate.
Further, the angled gap for being 13 ° is set between spool and the contact surface of valve seat.It acts as：When valve closes
When closing, the liquid stream in gap plays spool certain cushioning effect, reduces the speed of spool, to reduce the impact load to spool
Lotus increases the service life of spool.
Further, it is long rod structure that spool, which is inserted in one end in guide sleeve, and the length of stock is entire valve core length
1/2.
Further, core hydraulic intrinsic frequency is 25Hz.
For liquid sucting valve I, before liquid sucting valve is opened, plunger cavity is vacuum, and the low pressure emulsion being connect with liquid sucting port is in air
Make spool that spring force and its own gravity be overcome to move upwards under the action of pressure, valve port is opened, and low pressure emulsion passes through liquid sucting valve
Into plunger cavity, imbibition work is completed；After the completion of imbibition work, spring is since compression spring force increases, and spool is in spring force
Moved downward under effect, to close port, in closing process, the contact zone of spool and valve seat due to there are specific sky
Gap can be such that spool speed when that will close reduces, reduce impact.
For tapping valve II, when plunger moves upwards, the volume of plunger cavity constantly reduces, and the hydraulic coupling of intracavitary constantly increases
Greatly, when hydraulic coupling is more than the spring force of tapping valve, spool overcomes spring force to move downward, and valve port is opened, the high pressure of working chamber
Emulsion is discharged by tapping valve, and high pressure liquid is supplied to hydraulic test；When the hydraulic coupling of plunger cavity is less than spring force, spool
It can move upwards under spring force, to close port, similarly, when that will close, the speed of spool, which is returned, reduces, and subtracts
Small impact.
For emulsion pump, motor drives crank rotation, bent axle to drive pentacle weel to rotate by eccentric wheel, and pentacle weel pushes
5 plungers pump in plunger cavity, and when plunger starts to move downward, intracavitary is vacuum, and low pressure emulsion is big
Liquid sucting valve is opened under the action of air pressure is strong, starts imbibition work, while plunger constantly moves downward, when the spring-compressed of liquid sucting valve
When to a certain extent, spool moves downward under spring force, closes liquid sucting valve, and imbibition work is completed, and plunger arrives at this time
Up to lower limit position.When plunger moves upwards, the volume of plunger cavity constantly reduces, and the hydraulic coupling of intracavitary is continuously increased, hydraulic coupling
More than tapping valve spring force when, tapping valve is opened, and is started that high-pressure emulsion is discharged and is supplied hydraulic test, high-pressure emulsion row
After complete, plunger reaches upper limit position and starts to move downward, and when moving downward, vacuum is formed in plunger cavity, tapping valve is in bullet
It is closed under the action of spring force, liquid sucting valve starts imbibition again, and new cycle starts.In this way, drive and valve of the emulsion pump in motor
Control under be constantly provided out high-pressure emulsion.
Compared with prior art, the beneficial effects of the invention are as follows：The valve core material of this valve reduces the matter of spool using PEEK
Amount, structure using it is specific it is streamlined reduce flowed friction, cavitation erosion and air pocket, there are 13 ° of specific gaps with valve core chamber for valve seat
The shock loading that spool is subject to is reduced, the service life of valve is greatly enhanced, the response frequency of valve has reached 25Hz.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the partial enlarged view of spool and seat area；
Fig. 3 is valve core structure enlarged drawing；
1- shells in figure, 2- sleeves, 3- guide sleeves, 4- springs, 5- spools, 6- valve seats.
Specific implementation mode
A kind of emulsion pump high speed flat valve, including shell 1 are provided with plunger cavity T, the both ends plunger cavity T point in shell 1
It not being connect with liquid sucting valve I and tapping valve II, the liquid sucting valve I includes sleeve 2, guide sleeve 3, spool 5, valve seat 6 and spring 4,
2 both ends of sleeve are respectively arranged with guide sleeve 3 and valve seat 6, and spool 5 is provided in guide sleeve 3, and 5 outside of spool is cased with spring 4, valve
5 outer end of core is contacted with valve seat 6, and the spool outer end is streamlined structure, guide sleeve end and the plunger cavity T of liquid sucting valve I
The valve seat end of connection, liquid sucting valve I is oil inlet P；The tapping valve II is identical as liquid feed valve I structures, the valve seat of tapping valve II
End is connected to plunger cavity T, and the guide sleeve end of tapping valve II is oil return opening O.
Streamlined structure includes curved section a, curved section b and curved section c, and curved section a includes with O5For the center of circle, radius is
The circular arc of 5mm, and respectively with O1And O2For the center of circle, radius is two sections of circular arcs of 17mm；Curved section b includes two sections respectively with O6
And O9For the center of circle, radius is the arc section of 4mm；Curved section c includes two sections of symmetrical curves, wherein one section of curve includes with O3For circle
The heart, radius are the circular arc of 25mm, and with O7For the center of circle, radius is that the circular arc of 5mm is tangent；Another section of curve is with O4For the center of circle, half
Diameter is for the circular arc of 25mm and with O8The circular arc for being 5mm for the center of circle, radius mutually suits；Wherein, three sections of circular arc centers of circle of curved section a
Two sections of circular arc centers of circle for meeting at point an O, curved section b meet at OO54 sections of circular arc centers of circle of point an O ＇, curved section c are handed on extended line
In point O5, and center of circle O1With O2、O3With O4、O7With O8、 O6With O9Symmetrical, point O, O ＇, O about line OO' and its long line of delay5Exist
In the centre symmetry line of spool, center of circle O5Away from spool bottommost 5mm, with O5For coordinate origin, i.e. O5(0,0), then remaining center of circle sit
It is designated as：O (0,10), O'(0,18), O1(- 15, -16), O2(15, -16), O3(35,40), O4(- 35, -40), O7(22,13),
O8(- 22,13), O6(19,6), O9(- 19,6), (unit：Mm), when three sections of curves meet conditions above, the flowed friction of liquid
Minimum, the cavitation erosion of formation and air pocket are also minimum.Specific fairshaped structure keeps liquid flowing more smooth, and liquid resistance reduces, and
The cavitation erosion of generation and air pocket are also minimum, increase the service life of spool；Curved section a makes liquid form jet-like in advance, reduces
Vibration and noise caused by cavitation erosion caused by a fluid stream attenuates suddenly when liquid flows into valve port；When curved section c makes liquid flow, liquid
The friction between friction and liquid between body and spool wall surface reduces, and to reduce the on-way resistance of liquid flowing, also makes
The vortex formed around spool is also minimum, keeps the open and close of valve more timely, and control is more accurate.
The angled gap for being 13 ° is set between spool 5 and the contact surface of valve seat 6.
It is long rod structure that spool 5, which is inserted in one end in guide sleeve 3, and 1/2 that the length of stock is 5 length of entire spool.
5 hydraulic natural frequency of spool is 25Hz.
Valve seat proposed by the invention refers to the contact as shown in Fig. 2, in spool with valve seat with the specific gap of valve core chamber
Area, the gap that the faces spool A are 13 ° with valve seat B interfacial angle degree, it acts as：When the valves are closed, the liquid stream in gap plays spool
Certain cushioning effect reduces the speed of spool, to reduce the shock loading to spool, increases the service life of spool.
Structure using elongate rod proposed by the invention is as shown in figure 3, spool rest part in addition to tapering uses
Elongate rod, and elongate rod part accounts for the 1/2 of spool entire length, this structure can reduce the quality of spool, so that valve is had higher
Hydraulic natural frequency reaches the response frequency of 25Hz.Hydraulic natural frequency is usually the minimum response speed of system, in order to make valve
The response frequency of 25Hz can be reached, it is most effective method to increase hydraulic natural frequency.
Hydraulic natural frequency calculation formula is：
In formula：Ap：Hydraulic cylinder piston area
Vt：Total compression volume
mt：Convert the gross mass on piston
βe：Liquid effective volume elasticity modulus
As available from the above equation：It can be by increasing ApAnd βe, reduce VtAnd mtImprove hydraulic natural frequency.
It is to determine due to the flow of valve, so the cross-sectional area A of hydraulic cylinder piston area, that is, spoolpCannot at will it increase
Add；For liquid effective volume elasticity modulus βeIf being mixed into air in liquid, βeIt will reduce, so in order to improve βe, to the greatest extent
Amount reduces the mixed volume of liquid hollow gas；For conversion to the quality m on spooltComprising the quality m of spool itself1, valve chamber
Interior liquid quality m2, liquid reduced mass m in valve and plunger cavity connecting pipe3；The quality m of spool itself1By using thin
Long rod structure reduces, liquid quality m in valve chamber2Since flow determination cannot change, for valve and plunger cavity connecting pipe
In liquid reduced mass m3If the connecting pipe area of passage of valve and plunger cavity is a, liquid gross mass is m in pipeline0,
It then converts to the equivalent mass on spool and isSo properly increasing the diameter of pipeline can effectively reduce.
Claims (5)
1. a kind of emulsion pump high speed flat valve, it is characterised in that：Including shell (1), plunger cavity T, column are provided in shell (1)
The both ends plug chamber T are connect with liquid sucting valve I and tapping valve II respectively, and the liquid sucting valve I includes sleeve (2), guide sleeve (3), spool
(5), valve seat (6) and spring (4), sleeve (2) both ends are respectively arranged with guide sleeve (3) and valve seat (6), are arranged in guide sleeve (3)
There is spool (5), is cased with spring (4) on the outside of spool (5), spool (5) outer end is contacted with valve seat (6), the spool outer end
Guide sleeve end for streamlined structure, liquid sucting valve I is connected to plunger cavity T, and the valve seat end of liquid sucting valve I is oil inlet P；The row
Liquid valve II is identical as liquid feed valve I structures, and the valve seat end of tapping valve II is connected to plunger cavity T, and the guide sleeve end of tapping valve II is back
Hydraulic fluid port O.
2. emulsion pump high speed flat valve according to claim 1, it is characterised in that：The streamlined structure includes song
Line segment a, curved section b and curved section c, curved section a include with O5For the center of circle, radius is the circular arc of 5mm, and respectively with O1And O2
For the center of circle, radius is two sections of circular arcs of 17mm；Curved section b includes two sections respectively with O6And O9For the center of circle, radius is the circular arc of 4mm
Section；Curved section c includes two sections of symmetrical curves, wherein one section of curve includes with O3For the center of circle, radius is the circular arc of 25mm, and with
O7For the center of circle, radius is that the circular arc of 5mm is tangent；Another section of curve is with O4For the center of circle, radius be 25mm circular arc with O8For circle
The heart, the circular arc that radius is 5mm mutually suit；Wherein, three sections of circular arc centers of circle of curved section a meet at two sections of circles of point an O, curved section b
The arc center of circle meets at OO54 sections of circular arc centers of circle of point an O ＇, curved section c meet at point O on extended line5, wherein center of circle O1With O2, O3With
O4, O7With O8, O6With O9Symmetrical, point O, O ＇, O about line OO' and its long line of delay5In the centre symmetry line of spool, the center of circle
O5Away from spool bottommost 5mm, with O5For coordinate origin, i.e. O5(0,0), then remaining central coordinate of circle be：O (0,10), O'(0,18),
O1(- 15, -16), O2(15, -16), O3(35,40), O4(- 35, -40), O7(22,13), O8(- 22,13), O6(19,6), O9(-
19,6).
3. emulsion pump high speed flat valve according to claim 2, it is characterised in that：The spool (5) and valve seat (6)
Contact surface between the angled gap for being 13 ° is set.
4. emulsion pump high speed flat valve according to claim 2 or 3, it is characterised in that：The spool (5), which is inserted in, leads
One end into set (3) is long rod structure, and 1/2 that the length of stock is entire spool (5) length.
5. emulsion pump high speed flat valve according to claim 4, it is characterised in that：Described spool (5) hydraulic pressure is intrinsic
Frequency is 25Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303949.7A CN108468640B (en) | 2018-04-04 | 2018-04-04 | High-speed distributing valve of emulsion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303949.7A CN108468640B (en) | 2018-04-04 | 2018-04-04 | High-speed distributing valve of emulsion pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108468640A true CN108468640A (en) | 2018-08-31 |
| CN108468640B CN108468640B (en) | 2024-02-20 |
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ID=63262642
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810303949.7A Active CN108468640B (en) | 2018-04-04 | 2018-04-04 | High-speed distributing valve of emulsion pump |
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| Publication number | Publication date |
|---|---|
| CN108468640B (en) | 2024-02-20 |
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