CN105443343B - A kind of double-action hydraulic metering pump hydraulic end - Google Patents
A kind of double-action hydraulic metering pump hydraulic end Download PDFInfo
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- CN105443343B CN105443343B CN201511018251.3A CN201511018251A CN105443343B CN 105443343 B CN105443343 B CN 105443343B CN 201511018251 A CN201511018251 A CN 201511018251A CN 105443343 B CN105443343 B CN 105443343B
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- pump housing
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- plunger
- hydraulic cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of double-action hydraulics to measure pump hydraulic end, including plunger assembly, hydraulic cylinder and the pump housing, plunger assembly is movably arranged in hydraulic cylinder, the pump housing is mounted on hydraulic cylinder, the pump housing is arranged two, respectively the left side pump housing and the right side pump housing, two pump housings are mounted side by side on the outside of the hydraulic cylinder, plunger assembly is horizontally inserted into hydraulic cylinder, plunger assembly the two sides left chamber and right chamber equal with hydraulic cylinder inner wall formation volume, left chamber's connection left side pump housing, the right chamber connection right side pump housing；Plunger assembly moves right, and left chamber chamber pressure reduces, and right chamber chamber pressure increases, and the left side pump housing sucks medium, medium is discharged in the right side pump housing, and plunger assembly moves downward, and left chamber chamber pressure increases, right chamber chamber pressure reduces, and the right side pump housing sucks medium, and medium is discharged in the left side pump housing.Compared with prior art, the present invention has many advantages, such as that structure is simple, Measuring error is convenient.
Description
Technical field
The present invention relates to a kind of hydraulic metering pump hydraulic ends, measure pump hydraulic end more particularly, to a kind of double-action hydraulic.
Background technique
Metering pump is also referred to as constant displacement pump or proportioning pump, be it is a kind of can satisfy various stringent process flow needs, flow can
With the step-less adjustment in 0~100% range, for conveying a kind of special positive displacement pump of liquid (especially corrosive liquids), meter
Amount pump is one kind of fluid conveying machine, and outstanding feature is can to keep the constant flow rate unrelated with discharge pressure, uses meter
Amount pump can be completed at the same time the function of conveying, metering and adjusting, so that simplifying the technological process of production can using more metering pumps
With by several media by being mixed in actual ratio input process flow, due to the protrusion of its own, metering pump nowadays by
It is widely used in each industrial circle such as petroleum, chemical industry, pharmacy, food.Hydraulic diaphragm metering pump can stepless-adjustment because of flow
The features such as section, measuring accuracy is high, good airproof performance, No leakage is used widely.
It is known that metering pump is made of power end and fluid end two parts.Fluid end be metering pump important component it
One, plunger type and two kinds of diaphragm type are divided into according to pumped fluid characteristics and applying working condition requirement, the fluid end structure: fluid end
Primary structure is made of hydraulic cylinder, plunger, sucking and discharge valve assembly and stuffing box etc.；There are also diaphragms for diaphragm metering pump
And the components such as safety valve, Fill valve.Currently there are a variety of metering pumps, their generally existing flows interruptions have pulsation,
The disadvantages of energy consumption is high.For this situation, there is a small amount of double-action hydraulic metering pump, double-action hydraulic metering pump is than routine
Single pump head hydraulic metering pumps, and under same power of motor, flow can be double, but existing double-action hydraulic measures pump hydraulic end
Structure is complicated for hydraulic cavities, and detection and maintenance are more difficult than single pump head hydraulic pump, cannot especially when oil leakage phenomenon occurs in hydraulic end
Oil leak part is accurately positioned, needs to dismantle entire fluid end into point-by-point investigation.
Summary of the invention
Simple, detection that it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of structures
Double-action hydraulic easy to maintenance measures pump hydraulic end.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of double-action hydraulic metering pump hydraulic end, including hydraulic cylinder, plunger assembly and the pump housing, the plunger assembly
It is movably arranged in hydraulic cylinder, the pump housing is mounted on hydraulic cylinder, and the pump housing is arranged two, respectively left side
The pump housing and the right side pump housing, two pump housings are mounted side by side on the outside of the hydraulic cylinder, and the plunger assembly is horizontally inserted into liquid
Cylinder pressure body, plunger assembly the two sides left chamber and right chamber equal with hydraulic cylinder inner wall formation volume, the left chamber connect
The logical left side pump housing, the right chamber connection right side pump housing；The plunger assembly moves right, and left chamber chamber pressure reduces, right
Chamber pressure increases, and the left side pump housing sucks medium, and medium is discharged in the right side pump housing, and the plunger assembly moves downward, left chamber
Pressure increases, and right chamber chamber pressure reduces, and the right side pump housing sucks medium, and medium is discharged in the left side pump housing.
The left side pump housing and the right side pump housing includes pump head, diaphragm, import check valve assembly, Outlet check valves group
Part, oil sump, repairing valve module and release valve module, the pump head are mounted on hydraulic cylinder outer wall, the diaphragm installation
Between pump head and hydraulic cylinder, dielectric cavity is formed between diaphragm side and pump head, the diaphragm other side and hydraulic cylinder form liquid
Chamber is pressed, left chamber described in the hydraulic chamber into communication of the left side pump housing, right chamber described in the hydraulic chamber into communication of the right side pump housing is described
Import check valve assembly and Outlet check valves component are separately mounted to pump head both ends, the repairing valve module and release valve module
It is connected to hydraulic cavities and oil sump.
By wall in plunger bushing connection liquid cylinder pressure body in the middle part of the plunger assembly, left and right ends pass through left side column respectively
Fill in wall, left side plunger seal sheath and right side plunger seal sheath and column in sealing shroud and right side plunger seal sheath connection liquid cylinder pressure body
There are distances between plug bushing, to form left chamber and right chamber.
The left side plunger seal sheath and right side plunger seal sheath passes through sealing element and connect with the plunger assembly,
Realize sealing function, hydraulic oil is revealed when preventing plunger assembly from moving reciprocatingly.
There are two the sealing element is set, respectively inner seal liner and outside seal, the inner seal liner at both ends are respectively set
Close to left chamber and right chamber one end, the outside seal at both ends is separately positioned on far from left chamber and right chamber one end, is passed through
Two sealing elements are set and improve sealing effect.
It is located at two sealing element middle positions point on the left side plunger seal sheath and right side plunger seal sheath
Not She You flowing groove, the oil sump of the corresponding connection left side pump housing and the right side pump housing of the flowing groove, when plunger assembly moves downward
When, the inner seal liner on the plunger seal sheath of left side bears the pressure of hydraulic oil, and when there is hydraulic oil leakage, hydraulic oil passes through left side
Flowing groove on plunger seal sheath flows into the oil sump of the left side pump housing.
The metering pump hydraulic end is additionally provided with external pipeline, and the external pipeline both ends are separately connected the left side pump housing and right side
The oil sump of the pump housing, external pipeline is equipped with pipeline shut-off valve, and when normal work, pipeline shut-off valve is open-minded, when needing to the metering pump
When pressure end is detected with the presence or absence of oil leakage phenomenon, pipeline shut-off valve can be turned off, at this time the oil of measurement the left side pump housing and the right side pump housing
The height of hydraulic oil can judge hydraulic oil leak point in pond.
Oil sump shut-off valve is additionally provided at the oil sump of the external pipeline both ends connection left side pump housing and the right side pump housing.
Compared with prior art, the present invention has the advantage that
(1) by two left side pump housings arranged side by side and right side pump housing cooperating, it is situated between when one of pump housing sucks
When matter, another pump housing excludes medium, realizes under same power of motor, flow can be double；
(2) the metering pump fluid end structure is simple, manufacture easy to produce；
(3) plunger assembly two sides and left side plunger seal sheath and right side plunger seal sheath pass through two sealing elements carry out it is close
Envelope, improves sealing effect；
(4) by closing the pipeline shut-off valve being arranged on extension tube attached road, and hydraulic oil in the oil sump of two pump housings of observation
Height, can accurate judgement measure pump hydraulic end internal leakage point, checked point by point without dismantling entire fluid end, just
The metering pump hydraulic end subsequent repair and maintenance work.
Detailed description of the invention
Fig. 1 is present invention metering pump hydraulic end main view；
Fig. 2 is present invention metering pump hydraulic end cross-sectional view；
Fig. 3 is the face A-A cross-sectional view in Fig. 1；
Fig. 4 is present invention metering pump hydraulic end top view.
In figure 1 be plunger assembly, 2 be plunger bushing, 301 be left side plunger seal sheath, 302 be right side plunger seal sheath, 4
It is left chamber for outside gland, 501,502 be right chamber, and 601 be left side pump housing oil sump, and 602 be right side pump housing oil sump, and 7 be liquid
Cylinder pressure body, 8 be repairing valve module, and 9 be release valve module, and 10 be diaphragm, and 11 be pump head, and 12 be import check valve assembly, and 13 are
Outlet check valves component, 14 be external pipeline, and 15 be pipeline shut-off valve, and 16 be oil sump shut-off valve, and 17 be inside gland, and 18 be interior
Sealing element, 19 be outside seal.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figures 1-4, a kind of double-action hydraulic measures pump hydraulic end, including plunger assembly 1, hydraulic cylinder 7 and pump
Body, the plunger assembly 1 are movably arranged in hydraulic cylinder 7, and the pump housing is mounted on hydraulic cylinder 7, the pump
Body is arranged two, respectively the left side pump housing and the right side pump housing, and two pump housings are mounted side by side on 7 outside of hydraulic cylinder, institute
The plunger assembly 1 stated is horizontally inserted into hydraulic cylinder 7,1 two sides of the plunger assembly left chamber equal with 7 inner wall of hydraulic cylinder formation volume
Room 501 and right chamber 502, the connection of the left chamber 501 left side pump housing, the connection of the right chamber 502 right side pump housing；It is described
Plunger assembly 1 move right, 501 pressure of left chamber reduce, 502 pressure of right chamber increase, the left side pump housing suck medium, right side
Medium is discharged in the pump housing, and the plunger assembly 1 moves downward, and 501 pressure of left chamber increases, and 502 pressure of right chamber reduces, right side
The pump housing sucks medium, and medium is discharged in the left side pump housing.
The left side pump housing and the right side pump housing includes diaphragm 10, pump head 11, import check valve assembly 12, exports unidirectionally
Valve module 13, oil sump, repairing valve module 8 and release valve module 9, the pump head 11 is mounted on 7 outer wall of hydraulic cylinder, described
Diaphragm 10 be mounted between pump head 11 and hydraulic cylinder 7, form dielectric cavity between 10 side of diaphragm and pump head 11, diaphragm 10 is another
Side and hydraulic cylinder 7 form hydraulic cavities, left chamber 501 described in the hydraulic chamber into communication of the left side pump housing, the right side pump housing it is hydraulic
The chamber connection right chamber 502, the import check valve assembly 12 and Outlet check valves component 13 are separately mounted to pump head
11 both ends, the oil sump of the left side pump housing are left side pump housing oil sump 601, and the oil sump of the right side pump housing is right side pump housing oil sump 602, left pump
Body oil sump 601 and right side pump housing oil sump 602 are arranged on hydraulic cylinder 1, the repairing valve module 8 and release valve group of two pump housings
Part 9 is respectively communicated with respective hydraulic cavities and oil sump.
By 2 connection liquid cylinder pressure body of plunger bushing, 7 inner wall in the middle part of the plunger assembly 1, left and right ends pass through a left side respectively
7 inner wall of side plunger seal sheath 301 and 302 connection liquid cylinder pressure body of right side plunger seal sheath, left side plunger seal sheath 301 and right side
There are distances between plunger seal sheath 302 and plunger bushing 2, so that left chamber 501 and right chamber 502 are formed, hydraulic cylinder 7
Left side outer end is sealed by outside gland 4, and 7 right side outer end of hydraulic cylinder is sealed by inside gland 17.Described
Left side plunger seal sheath 301 and right side plunger seal sheath 302 are connect by sealing element with the plunger assembly 1, are realized close
Envelope effect, hydraulic oil is revealed when preventing plunger assembly 1 from moving reciprocatingly.There are two wherein sealing element is set, respectively inner seal liner
18 and outside seal 19, the inner seal liner 18 at both ends is separately positioned on close to 502 one end of left chamber 501 and right chamber, both ends
Outside seal 19 is separately positioned on far from 502 one end of left chamber 501 and right chamber, improves sealing effect by two sealing elements of setting
Fruit.It is located at two sealing element middle positions point on the left side plunger seal sheath 301 and right side plunger seal sheath 302
Not She You flowing groove, the oil sump of the corresponding connection left side pump housing and the right side pump housing of the flowing groove, when plunger assembly 1 moves downward
When, the inner seal liner 18 on left side plunger seal sheath 301 bears the pressure of hydraulic oil, and when there is hydraulic oil leakage, hydraulic oil is logical
The flowing groove crossed on the plunger seal sheath 301 of left side flows into the oil sump of the left side pump housing.
The metering pump hydraulic end is additionally provided with external pipeline 14,14 both ends of external pipeline be separately connected the left side pump housing and
The oil sump of the right side pump housing, external pipeline 14 is equipped with pipeline shut-off valve 15, and when normal work, pipeline shut-off valve 15 is open-minded, works as needs
To the metering pump pressure end with the presence or absence of oil leakage phenomenon detect when, pipeline shut-off valve 15 can be turned off, at this time measurement left side the pump housing and
The height of hydraulic oil can judge hydraulic oil leak point in the oil sump of the right side pump housing.14 both ends of external pipeline connect left side
Oil sump shut-off valve 16 is additionally provided at the oil sump of the pump housing and the right side pump housing.
Claims (3)
1. a kind of double-action hydraulic measures pump hydraulic end, including plunger assembly (1), hydraulic cylinder (7) and the pump housing, the plunger
Component (1) is movably arranged in hydraulic cylinder (7), and the pump housing is mounted on hydraulic cylinder (7), which is characterized in that described
The pump housing be arranged two, respectively the left side pump housing and right side pump housing, two pump housings are mounted side by side on the hydraulic cylinder (7) outside
Side, the plunger assembly (1) are horizontally inserted into hydraulic cylinder (7), and plunger assembly (1) two sides are formed with hydraulic cylinder (7) inner wall
The equal left chamber of volume (501) and right chamber (502), the left chamber (501) the connection left side pump housing, the right chamber
(502) the connection right side pump housing；The plunger assembly (1) moves right, and left chamber's (501) pressure reduces, right chamber (502) pressure
Power increases, and the left side pump housing sucks medium, and medium is discharged in the right side pump housing, and the plunger assembly (1) moves downward, left chamber
(501) pressure increases, and right chamber (502) pressure reduces, and the right side pump housing sucks medium, and medium is discharged in the left side pump housing；
By plunger bushing (2) connection liquid cylinder pressure body (7) inner wall in the middle part of the plunger assembly (1), left and right ends pass through respectively
Left side plunger seal sheath (301) and right side plunger seal sheath (302) connection liquid cylinder pressure body (7) inner wall, left side plunger seal sheath
(301) and between right side plunger seal sheath (302) and plunger bushing (2) there are distances, thus formed left chamber (501) and
Right chamber (502)；
The left side plunger seal sheath (301) and right side plunger seal sheath (302) passes through sealing element and the plunger group
Part (1) connection；
There are two the sealing element is set, respectively inner seal liner (18) and outside seal (19), the inner seal liner (18) at both ends
It is separately positioned on close to left chamber (501) and right chamber (502) one end, the outside seal (19) at both ends is separately positioned on far from a left side
Chamber (501) and right chamber (502) one end；
It is located among two sealing elements on the left side plunger seal sheath (301) and right side plunger seal sheath (302)
Position is respectively equipped with flowing groove, the oil sump of the corresponding connection left side pump housing and the right side pump housing of the flowing groove；
The metering pump hydraulic end is additionally provided with the external pipeline (14) for determining metering pump hydraulic end internal leakage point, and described is outer
Adapter tube road (14) both ends are separately connected the oil sump of the left side pump housing and the right side pump housing, and external pipeline (14) is equipped with pipeline shut-off valve
(15)；
It blinds off a line shut-off valve (15), the height of hydraulic oil, judges hydraulic oil in the oil sump of the measurement left side pump housing and the right side pump housing
Leak point.
2. a kind of double-action hydraulic according to claim 1 measures pump hydraulic end, which is characterized in that the left side pump housing
With the right side pump housing include pump head (11), diaphragm (10), import check valve assembly (12), Outlet check valves component (13), oil sump,
Repairing valve module (8) and release valve module (9), the pump head (11) are mounted on hydraulic cylinder (7) outer wall, the diaphragm
(10) it is mounted between pump head (11) and hydraulic cylinder (7), forms dielectric cavity, diaphragm between diaphragm (10) side and pump head (11)
(10) other side and hydraulic cylinder (7) form hydraulic cavities, left chamber (501) described in the hydraulic chamber into communication of the left side pump housing, right side
Right chamber described in the hydraulic chamber into communication of the pump housing (502), the import check valve assembly (12) and Outlet check valves component
(13) pump head (11) both ends are separately mounted to, the repairing valve module (8) is connected to hydraulic cavities and oil with release valve module (9)
Pond.
3. a kind of double-action hydraulic according to claim 1 measures pump hydraulic end, which is characterized in that the external pipeline
(14) oil sump shut-off valve (16) are additionally provided at the oil sump of the both ends connection left side pump housing and the right side pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018251.3A CN105443343B (en) | 2015-12-29 | 2015-12-29 | A kind of double-action hydraulic metering pump hydraulic end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018251.3A CN105443343B (en) | 2015-12-29 | 2015-12-29 | A kind of double-action hydraulic metering pump hydraulic end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105443343A CN105443343A (en) | 2016-03-30 |
| CN105443343B true CN105443343B (en) | 2019-02-12 |
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ID=55553891
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511018251.3A Active CN105443343B (en) | 2015-12-29 | 2015-12-29 | A kind of double-action hydraulic metering pump hydraulic end |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09296805A (en) * | 1996-05-07 | 1997-11-18 | Mitsubishi Heavy Ind Ltd | Hydraulic cylinder for exciting device |
| CN100582484C (en) * | 2005-07-14 | 2010-01-20 | 杭州大潮石化设备有限公司 | Internal circulation pressure balance ultra high pressure hydralic diaphram type metering pump |
| CN201546937U (en) * | 2009-11-23 | 2010-08-11 | 杭州大潮石化设备有限公司 | Hydraulic diaphragm reciprocating pump with simplified structure |
| DE102011054074A1 (en) * | 2011-09-30 | 2013-04-04 | Aker Wirth Gmbh | Displacement pump e.g. slurry pump, has pump unit comprising working areas, displacement elements designed as diaphragms, and piston for operating displacement elements, where pump unit is designed in double-acting manner |
| DE102013114320A1 (en) * | 2013-12-18 | 2015-06-18 | Mhwirth Gmbh | Hot sludge pump |
| CN104088777B (en) * | 2014-05-27 | 2016-09-28 | 德帕姆(杭州)泵业科技有限公司 | The dosing pump that a kind of barrier film quantitatively compresses |
| CN205297842U (en) * | 2015-12-29 | 2016-06-08 | 米顿罗工业设备（上海）有限公司 | Two effect hydraulic pressure measurement pump fluid end |
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- 2015-12-29 CN CN201511018251.3A patent/CN105443343B/en active Active
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| CN105443343A (en) | 2016-03-30 |
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