CN205779529U - A kind of plunger type oil membrane pump - Google Patents
A kind of plunger type oil membrane pump Download PDFInfo
- Publication number
- CN205779529U CN205779529U CN201620446891.8U CN201620446891U CN205779529U CN 205779529 U CN205779529 U CN 205779529U CN 201620446891 U CN201620446891 U CN 201620446891U CN 205779529 U CN205779529 U CN 205779529U
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- plunger
- pump
- assembly
- box body
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Abstract
nullThis utility model relates to a kind of plunger type oil membrane pump，Including fluid end and power end，Fluid end comprises pump assembly，The plunger (2) being arranged in pump assembly，For fixing the fluid cylinder support (14) of pump assembly，Wherein fluid cylinder support (14) and power end fuselage are assembled together for fixing fluid end，Wherein pump assembly comprises the pump housing (1)，The pump housing is provided with plunger channel in (1)，Plunger is movably arranged in plunger channel，Sealed letter body assembly it is provided with between plunger and plunger channel，It is characterized in that: the front end of plunger channel is provided with main seal cavity，The rear end of plunger channel is provided with auxiliary seal cavity，Sealed letter body assembly comprises the main stuffing box body assembly being arranged in main seal cavity，With the secondary stuffing box body assembly being arranged in auxiliary seal cavity，It is provided with in plunger channel between described main stuffing box body and secondary stuffing box body for cutting off main stuffing box body and the oil sump of secondary stuffing box body，Lubricating oil (21) it is provided with in this oil sump.This utility model can realize medium No leakage, plunger processing easy accessibility.
Description
Technical field
This utility model belongs to technical field of mechanical automation, is specifically related to one and can carry hazardous medium (such as methanol)
Plunger type oil membrane pump.
Background technology
Traditional plunger type metering pump medium-tight position is by plunger, filler, fairlead, packing press ring, adjusting nut group
Become, as shown in Figure 1, have the seal form such as V-arrangement, U-shaped, rectangle to form one group of band, along with filler abrasion, pressure increase,
Medium can directly leak in fluid cylinder from filler with plunger, is water or nontoxic liquid to pumped (conveying) medium, and this leakage is
Allowing, as long as leakage rate is less than national Specification, the leakage of trace even can improve making of plunger and filler
Use the life-span.But to conveying this hazardous medium of methanol, at the seal clearance of plunger and filler, produced leakage, definitely can not
Expose in an atmosphere.So typically carrying the such medium of methanol, accompanying drawing 2 diaphragm metering pump can be used.Diaphragm metering pump
Make medium methanol and airtight and watertight padding separate by barrier film, reach zero leakage, but typically manufacture diaphragm metering pump processing cost relatively
Height, processing technique and required precision are the highest, and especially three valves adjust cumbersome, and professional very strong, general user is difficult to behaviour
Make, and the diaphragm life-span is the longest, change diaphragm dismounting inconvenience, during it, also can reveal a large amount of medium methanol.So, it is provided that a kind of
Without revealing, the plunger type oil diaphragm metering pump of processing easy accessibility is just particularly important.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of No leakage, processing dismounting for above-mentioned prior art
Plunger type oil membrane pump easily.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is: a kind of plunger type oil membrane pump, including
Fluid end and power end, fluid end comprises pump assembly, the plunger being arranged in pump assembly, for fixing the liquid of pump assembly
Jar support, wherein fluid cylinder support and power end fuselage are assembled together for fixing whole fluid end, wherein said pump assembly
Comprising the pump housing, be provided with plunger channel and the valve group passage connected with plunger in the pump housing, plunger is movably arranged in plunger channel, post
It is provided with sealed letter body assembly between plug and plunger channel, it is characterised in that: the front end of described plunger channel is provided with main seal cavity,
The rear end of described plunger channel is provided with auxiliary seal cavity, and described sealed letter body assembly comprises the main stuffing-box being arranged in main seal cavity
Body assembly, and the secondary stuffing box body assembly being arranged in auxiliary seal cavity, the post between described main stuffing box body and secondary stuffing box body
It is provided with in plug passage for cutting off main stuffing box body and the oil sump of secondary stuffing box body, in this oil sump, is provided with lubricating oil.
As improvement, the described pump housing being provided with the backflow valve pocket connected with oil sump, this reflux inlet intracavity is provided with reflux inlet
Assembly, the entrance of reflux inlet assembly connects with oil sump, the outlet of reflux inlet assembly and valve group channel connection.
Improving, described reflux inlet assembly comprises valve ball, valve bonnet, valve spring, plug screw support and plug screw, and wherein valve ball first fills again
Enter in the backflow valve pocket of the pump housing, valve bonnet in rear enclosure, place into valve spring, finally screw in plug screw support and withstand valve spring, last pump
On body, the fabrication hole plug screw outside backflow valve pocket blocks.
Preferably, the pressure of opening of described reflux inlet assembly is 0.8～1.2MPa.
Improving, on the described pump housing or the pump housing is outside equipped with the venting valve chamber connected with oil sump, vent valve intracavity is provided with again
Manually exitting assembly, this assembly of manually exitting comprises venting valve ball and the air relief cock offseted with venting valve ball.
Improving, described main stuffing box body assembly includes main pressure ring, primary seal filler and main fairlead again, main pressure ring, main close
After packing material and main fairlead are sequentially loaded into the main seal cavity of pump housing front end, it is fixed in main seal cavity with gland.
Improving, described gland outer ring is provided with seal groove again, is provided with close for realize between gland and the pump housing in seal groove
The sealing ring of envelope and back-up ring.
Improving, described plunger imports from pump housing front end again, penetrates with secondary stuffing box body inter-module from main stuffing box body assembly,
Load in the hole, location of crosshead, then with positioning the oblique locking of spiral pin, crosshead is fixed on the rear end of fluid cylinder support；Pump housing front end
Covering flange, be locked with hex nut and studs, the middle part of flange screws in regulation bolt and withstands gland.
Improve again, described valve group passage is provided with medium suction inlet and medium outlet.
Improving, described secondary stuffing box body assembly includes secondary fairlead, secondary airtight and watertight padding and secondary pressure ring, and fairlead, pair are close again
After packing material and secondary pressure ring are sequentially loaded into the auxiliary seal cavity of pump housing rear end, threaded with adjusting nut and pump housing rear end.
Compared with prior art, the utility model has the advantage of: by arranging two grades of main stuffing box bodies and forming one
Medium is sealed and creates a good condition with leakage-preventing by oil sump (oil diaphragm cavity), it is achieved that to major and minor two grades of fillers
Sealing up for safekeeping of medium (methanol) revealed by letter body assembly；In further scheme, when medium seals pressure up for safekeeping more than reflux inlet assembly import
Automatic back flow during pressure, runs in oil lubrication owing to plunger and major and minor two grades of filler assemblies all steep, and air-proof condition is superior, rubs
Wiping micro power consumption, the life-span is long, reaches the purpose that the medium (methanol) zero in secondary packing seal assembly is revealed.
Accompanying drawing explanation
Fig. 1 is traditional plunger type metering pump structural representation；
Fig. 2 is conventional membrane formula dosing pump structural representation；
Fig. 3 is plunger type oil diaphragm pump structure schematic diagram in this utility model embodiment one；
Fig. 4 is plunger type oil diaphragm pump structure schematic diagram in this utility model embodiment two.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Embodiment one
Plunger type oil membrane pump as shown in Figure 3, including fluid end and power end, wherein fluid end comprises: include fluid cylinder
Support 14；Crosshead 13, location spiral pin 17, plunger 2；Adjusting nut 12, secondary pressure ring 11, secondary filler 10, secondary fairlead 9；Machine oil
21, medium (methanol) 22；Manual air-release valves assembly 15: air relief cock 151, valve ball 152, valve chamber 153, sealing gasket 154；The pump housing 1, circle
Pin 18, locking nut 16；Reflux inlet assembly 19: valve ball 191, valve bonnet 192, valve spring 193, plug screw support 194, plug screw 20；
Main pressure ring 4, main filler 5, main fairlead 3, gland 6, O 601, back-up ring 602, regulation bolt 8, flange 7, hex nut 701,
Studs 702.
Described fluid cylinder support 14 assembles with power end fuselage, is used for fixing whole fluid end.
Being provided with plunger channel and the valve group passage connected with plunger in the pump housing 1, plunger is movably arranged in plunger channel, post
It is provided with sealed letter body assembly between plug and plunger channel；The pump housing 1 and the combined integrated pump assembly that becomes of sealed letter body assembly, pump
Body assembly is put in the middle of the fluid cylinder support 14, then passes fluid cylinder support 14 prelocalization hole, between position with straight pin 18, then exist
Detain outside fluid cylinder support 14 prelocalization outer end of hole locking nut 16 and the pump housing 1 front end at screw thread and screw.
The front end of described plunger channel is provided with main seal cavity, and the rear end of described plunger channel is provided with auxiliary seal cavity, described close
Packing body assembly comprises the main stuffing box body assembly being arranged in main seal cavity, and the secondary stuffing box body being arranged in auxiliary seal cavity
Assembly, is provided with in the plunger channel between described main stuffing box body and secondary stuffing box body for cutting off main stuffing box body and secondary filler
The oil sump of letter body, is provided with lubricating oil 21 in this oil sump.
Described secondary stuffing box body assembly includes secondary fairlead 9, secondary filler 10, that secondary pressure ring 11 is sequentially loaded into pump housing rear end pair is close
After envelope chamber, screw, to regulate filler at screw thread with detaining outside adjusting nut 12 and the pump housing 1 rear end.
It is close that described main stuffing box body assembly includes that main pressure ring 4, main filler 5, main fairlead 3 are sequentially loaded into the pump housing 1 front end master
After envelope chamber, plunger 2 imports from the pump housing 1 front end, penetrates, load the location of crosshead 13 between main packing seal and secondary packing seal
Kong Zhong, then with positioning the oblique locking of spiral pin 17；During to tear plunger 2 open, the most only need to screw out location spiral pin 17, draw from the pump housing 1 front end
Go out plunger 2, remove plunger type metering pump and diaphragm metering pump from and tear plunger open and must tear the pump housing open, be allowed to dismount more convenient；It
The rear pump housing 1 front end reinstalls gland 6, and wherein O 601 and back-up ring 602 are loaded in the seal groove of gland 6 outer ring, with reach with
The purpose that the pump housing 1 seals；The last pump housing 1 drive end bearing bracket upper flange 7, with hex nut, 701 and studs 702 be locked, its
The middle regulation bolt 8 that screws in withstands gland 6, to reach to regulate the purpose of primary seal filler.
The described pump housing is outside equipped with the venting valve chamber 153 connected with oil sump, uses sealing gasket between venting valve chamber 153 and the pump housing
154 seal, and vent valve intracavity is provided with manually venting assembly 15, Manual air-release valves assembly 15 include exitting valve ball 152 and with put
The air relief cock 151 that air valve ball 152 offsets.When oil sump has certain gas, then unscrew air relief cock 151, release unnecessary gas
Body；Before opening pump, screw out whole Manual air-release valves assembly 15, pour appropriate machine oil 21 to submergence plunger 2 into, be used for lubricating plunger
2 with main stuffing box body assembly and pair stuffing box body assembly.
It is provided with medium suction inlet and medium outlet on described valve group passage；It is provided with and oil sump on the upside of the described pump housing 1
The backflow valve pocket of connection, this reflux inlet intracavity is provided with reflux inlet assembly 19, and the entrance of reflux inlet assembly connects with oil sump, reflux inlet
The outlet of assembly connects with the medium suction inlet of valve group passage, and described reflux inlet assembly 19 includes valve ball 191, valve bonnet 192, valve bullet
Spring 193, valve ball 191, valve bonnet 192, valve spring 193 be sequentially loaded into the pump housing 1 and reflux in valve pocket, with plug screw support 194 screwing hermetic,
The last pump housing 1 front-end process hole plug screw 20 blocks sealing；The pressure of opening of reflux inlet assembly 19 is 1MPa；When plunger type oil
When the plunger 2 of membrane pump moves back and forth, medium (methanol) 22 sucks from suction inlet, then discharges from outlet, and pressure increases therebetween
Time, have in the oil sump that a certain amount of medium (methanol) 22 leaks to the pump housing 1 at main stuffing box body assembly, due to medium (methanol)
22 density are less than machine oil 21, therefore medium (methanol) 22 can float on machine oil 21, and the medium (methanol) of leakage is slowly filled with whole
Oil sump residual cavity, when cavity pressure is more than 1MPa, reflux inlet assembly 19 above can open, then float on machine oil 21 it
Upper medium (methanol) 22 flows into suction inlet by reflux inlet assembly 19, is discharged into a certain amount of, when cavity pressure is less than 1MPa, then returns
Stream valve module 19 is automatically switched off；Owing to the pressure of intracavity is consistently less than 1MPa, therefore the amount of leakage of secondary stuffing box body assembly is minimum, and
And reveal herein for machine oil 21, this leakage is to allow, as long as leakage rate is less than national Specification, trace
Leakage even can improve the service life of plunger and filler.
Embodiment two
Unlike embodiment one, due to the difference of medium, backflow valve pocket position is arranged on the downside of the pump housing 1, accordingly
Suction inlet is lower section, and outlet is top, shown in Figure 4.Specifically, the pumped (conveying) medium density of this embodiment is than machine oil 21
Greatly, therefore medium can be sunken to below machine oil 21, and the medium of leakage is slowly filled with whole oil sump residual cavity, when cavity pressure is more than
During 1MPa, the reflux inlet assembly 19 being positioned at lower section can be opened, then be sunken to machine oil 21 lower dielectric and flowed into by reflux inlet assembly 19
Suction inlet, is discharged into a certain amount of, and when cavity pressure is less than 1MPa, then reflux inlet assembly 19 is automatically switched off.Pressure due to intracavity
Be consistently less than 1MPa, therefore the amount of leakage of secondary stuffing box body assembly be minimum, and reveal herein for machine oil 21, this leakage is fair
Being permitted, as long as leakage rate is less than national Specification, the leakage of trace even can improve the use of plunger and filler
Life-span.
Claims (10)
1. a plunger type oil membrane pump, including fluid end and power end, fluid end comprises pump assembly, is arranged on pump assembly
Interior plunger (2), for fixing the fluid cylinder support (14) of pump assembly, wherein fluid cylinder support (14) is assemblied in power end fuselage
Being used for fixing whole fluid end together, wherein said pump assembly comprises the pump housing (1), be provided with in the pump housing (1) plunger channel and with
The valve group passage of plunger connection, plunger is movably arranged in plunger channel, is provided with sealed letter body between plunger and plunger channel
Assembly, it is characterised in that: the front end of described plunger channel is provided with main seal cavity, and the rear end of described plunger channel is provided with secondary sealing
Chamber, described sealed letter body assembly comprises the main stuffing box body assembly being arranged in main seal cavity, and is arranged in auxiliary seal cavity
Secondary stuffing box body assembly, is provided with for cutting off main stuffing-box in the plunger channel between described main stuffing box body and secondary stuffing box body
Body and the oil sump of secondary stuffing box body, be provided with lubricating oil (21) in this oil sump.
Plunger type oil membrane pump the most according to claim 1, it is characterised in that: the described pump housing is provided with and oil sump on (1)
The backflow valve pocket of connection, this reflux inlet intracavity is provided with reflux inlet assembly (19), and the entrance of reflux inlet assembly connects with oil sump, backflow
The outlet of valve module and valve group channel connection.
Plunger type oil membrane pump the most according to claim 2, it is characterised in that: described reflux inlet assembly (19) comprises valve ball
(191), valve bonnet (192), valve spring (193), plug screw support (194) and plug screw (20), wherein valve ball (191) is initially charged with the pump housing
In backflow valve pocket, valve bonnet (192) in rear enclosure, place into valve spring (193), finally screw in plug screw support (194) and withstand valve spring
(193) the fabrication hole plug screw (20) outside valve pocket that, the last pump housing refluxes blocks.
Plunger type oil membrane pump the most according to claim 3, it is characterised in that: described reflux inlet assembly (19) open pressure
Power is 0.8～1.2MPa.
5. according to the plunger type oil membrane pump described in any one claim in Claims 1 to 4, it is characterised in that: described
On the pump housing or the pump housing is outside equipped with the venting valve chamber (153) connected with oil sump, vent valve intracavity is provided with assembly of manually exitting
(15), this assembly of manually exitting comprises venting valve ball (152) and the air relief cock (151) offseted with venting valve ball.
Plunger type oil membrane pump the most according to claim 1, it is characterised in that: described main stuffing box body assembly includes main pressure
Ring (4), primary seal filler (5) and main fairlead (3), main pressure ring (4), primary seal filler (5) and main fairlead (3) are sequentially loaded into
After the main seal cavity of the pump housing (1) front end, it is fixed in main seal cavity with gland (6).
Plunger type oil membrane pump the most according to claim 6, it is characterised in that: described gland (6) outer ring is provided with seal groove,
The sealing ring (601) for realizing the sealing between gland and the pump housing and back-up ring (602) it is provided with in seal groove.
8. according to the plunger type oil membrane pump described in claim 6 or 7, it is characterised in that: described plunger is led from pump (1) front end
Enter, penetrate with secondary stuffing box body inter-module from main stuffing box body assembly, load in the hole, location of crosshead (13), then with positioning spiral shell
Pin (17) oblique locking, crosshead (13) is fixed on the rear end of fluid cylinder support；The pump housing (1) drive end bearing bracket upper flange (7), uses hexagonal spiral shell
Female (701) and studs (702) are locked, and the middle part of flange (7) screws in regulation bolt (8) and withstands gland 6.
Plunger type oil membrane pump the most according to claim 1, it is characterised in that: it is provided with medium on described valve group passage and inhales
Entrance and medium outlet.
Plunger type oil membrane pump the most according to claim 1, it is characterised in that: described secondary stuffing box body assembly includes pair
Fairlead (9), secondary airtight and watertight padding (10) and secondary pressure ring (11), fairlead (9), secondary airtight and watertight padding (10) and secondary pressure ring (11) are successively
After loading the auxiliary seal cavity of pump housing rear end, threaded with adjusting nut (12) and the pump housing (1) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446891.8U CN205779529U (en) | 2016-05-17 | 2016-05-17 | A kind of plunger type oil membrane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446891.8U CN205779529U (en) | 2016-05-17 | 2016-05-17 | A kind of plunger type oil membrane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779529U true CN205779529U (en) | 2016-12-07 |
Family
ID=58119917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620446891.8U Withdrawn - After Issue CN205779529U (en) | 2016-05-17 | 2016-05-17 | A kind of plunger type oil membrane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822518A (en) * | 2016-05-17 | 2016-08-03 | 宁波合力机泵有限公司 | Plunger type oil diaphragm pump |
| CN108050029A (en) * | 2017-12-05 | 2018-05-18 | 宁波市奉化溪口威尔特制泵厂 | A kind of energy-efficient inclined disc type high-pressure plunger pump |
-
2016
- 2016-05-17 CN CN201620446891.8U patent/CN205779529U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822518A (en) * | 2016-05-17 | 2016-08-03 | 宁波合力机泵有限公司 | Plunger type oil diaphragm pump |
| CN105822518B (en) * | 2016-05-17 | 2018-01-16 | 宁波合力机泵股份有限公司 | A kind of plunger type oil membrane pump |
| CN108050029A (en) * | 2017-12-05 | 2018-05-18 | 宁波市奉化溪口威尔特制泵厂 | A kind of energy-efficient inclined disc type high-pressure plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20180116 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20180116 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |