CN105971835A - Plunger oil-free high-pressure pump - Google Patents
Plunger oil-free high-pressure pump Download PDFInfo
- Publication number
- CN105971835A CN105971835A CN201610087363.2A CN201610087363A CN105971835A CN 105971835 A CN105971835 A CN 105971835A CN 201610087363 A CN201610087363 A CN 201610087363A CN 105971835 A CN105971835 A CN 105971835A
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- China
- Prior art keywords
- plunger
- bearing
- pump
- mat
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
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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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
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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
- 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
- F04B53/02—Packing the free space between cylinders and pistons
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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
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention belongs to the technical field of plunger pumps and especially relates to a plunger oil-free high-pressure pump. The pump comprises a pump shell, wherein a main shaft and multiple plunger mechanism driven by the main shaft are installed in the pump shell; each plunger mechanism comprises a plunger base and a connecting rod; one end of the connecting rod is an output end; the output end of the connecting rod is stretched into the rear end of the plunger base and in a hinged connection with the plunger base; a plunger is disposed on the front end of the plunger base; the output end of the connecting rod is equipped with an oilless bearing installation position; a bearing housing is disposed in the oilless bearing installation position; a pin shaft passes through the center of the bearing housing; two ends of the pin shaft are stretched out from the bearing housing and installed on the plunger base; a ring of ceramic roller pins are distributed densely between the circumferential side of the pin shaft and the inner wall of the bearing housing; and check rings sleeve the pin shaft parts on two ends of the ceramic roller pins respectively, and the check rings are clamped between the ceramic roller pins and the inner wall of the plunger base and can prevent the end faces of the ceramic roller pins from touching the plunger base. In comparison with an existing plunger pump, the pump provided by the invention is characterized by a stable structure, outstanding performance and low noise, etc.
Description
Technical field
The invention belongs to plunger pump technique field, refer in particular to a kind of plunger oil-free high-pressure pump.
Background technology
The portion of applicant discloses a kind of plunger oil-free high-pressure pump in first patent ZL 200920188760.4,
The plunger supercharging driven by pump shaft, eccentric ring, bearing, connecting rod, plunger, plunger bushing etc. is installed in the pump housing
Structure, plunger pressurized construction is: at least two connecting rods are spaced and are co-axially located at pump main shaft in parallel to each other
On, described connecting rod is installed on bearing, and bearing is installed on eccentric bushing, and eccentric bushing is fixed on pump main shaft,
The other end of connecting rod is hinged with plunger, and plunger is arranged in the cavity of the pump housing, is provided with between the pump housing and plunger
Self-lubricating plunger bushing, is provided with water shutoff circle and pad in the end of plunger and the contact position of pump head, and advantage is: knot
Structure is simple, pollution-free, high pressure, high efficiency, service life are long.
Applicant, during production and sales, finds that this technology exists following defect: 1, by main shaft
Setting-up eccentricity set realizes the back and forth movement of plunger, and eccentric bushing can produce loosening after long-play, causes
Abnormal sound and abrasion；2, self-lubricating plunger bushing is engineering plastics, or there is cracking and the phenomenon of abrasion；3、
Bearing between connecting rod and plunger is easily damaged；When 4, main shaft being arranged on pump case, based on machining accuracy and
The reciprocating motion of installation accuracy, main axis and plunger may exist inharmonious, i.e. the centrage of plunger and
The centrage out of plumb of main shaft.
Summary of the invention
It is an object of the invention to provide a kind of simple in construction, safe and reliable novel plunger oil-free high-pressure pump.
The object of the present invention is achieved like this:
Plunger oil-free high-pressure pump, including pump case, is provided with main shaft and several plungers of main shaft drive in pump case
Mechanism, plunger mechanism includes that plunger mat and connecting rod, connecting rod one end are outfan, and the outfan of described connecting rod is stretched
Entering plunger mat rear end hinged with plunger mat, the front end of plunger mat is provided with plunger, the outfan of described connecting rod
It is provided with self-lubricating bearing installation position, in self-lubricating bearing installation position, is provided with bearing holder (housing, cover), the central authorities of bearing holder (housing, cover)
Being equipped with a bearing pin, the two ends projecting shaft bearing sleeve of bearing pin is also arranged in plunger mat, bearing pin week side and bearing
The ceramic needle roller of a circle it is densely covered with between set inwall；It is respectively installed with gear on the bearing pin at described pottery needle roller two ends
Circle, back-up ring is folded between pottery needle roller and plunger mat inwall and stops the end contact plunger mat of pottery needle roller.
Being set with oil seal ring on bearing pin outside described back-up ring, the periphery of described oil seal ring is provided with O, O
The inwall laminating of shape circle and self-lubricating bearing installation position.
Described plunger mat rear end is provided with endoporus, and the outfan of connecting rod stretches into endoporus and is hinged in plunger mat
Portion；Described plunger mat is located on plunger bushing, and plunger bushing is fixedly mounted in the pump housing.
The front end of described plunger mat and back segment are provided with stage portion, and stage portion is set with guide pin bushing, outside guide pin bushing
Wall is slidably matched with plunger bushing inwall.
Form the eccentric axial portion of some sections on described main shaft, eccentric axial portion is all set with bearing；Described company
The other end of bar is banding set, and banding set is held tightly on corresponding bearing by clamping screw.
The cross section of the eccentric axial portion of each section is the most identical, and cave inward in the middle part of the axial plane of eccentric axial portion formation rolling
Pearl groove, is provided with ball in ball grooves, ball grooves outer sheath is equipped with the bearing outer ring of detent ball, outside bearing
The both sides of circle are provided with skeleton.
Described pump case includes pump cover and the pump housing, and plunger mechanism is arranged in the cylinder chamber in the pump housing；Pump cover and the pump housing
Main shaft installation position it is respectively provided with on the interface of arranged on left and right sides；Main shaft is arranged on master by the base bearing at two ends
On axle installation position, the front side of pump cover is detachably provided with tightening cover.
Being provided with the black box coordinated with described plunger in plunger cavity in the described pump housing, black box includes
Above water seal, is provided with auxiliary set between adjacent twice water seal；One of them auxiliary set is backflow auxiliary set,
The circumference of backflow auxiliary set forms several backflow through hole, the pump housing is provided with and the drain of backflow through hole conducting
Passage, drainage channel connects with the intake tunnel of the pump housing.
One of them auxiliary set is draining auxiliary set, and the circumference of draining auxiliary set forms several drainage holes, the pump housing
On be provided with and the drainage channel of drainage hole conducting, drainage channel and pump housing ft connection.
The rear end of described plunger with the concrete structure of plunger mat clamping is: the rear portion of plunger is provided with jump-ring slot,
Being provided with jump ring in jump-ring slot, described plunger mat front end is provided with the card joint chair inserted for plunger, in card joint chair
It is provided with the stopper slot coordinated with jump ring；
Or, the rear end of described plunger with the concrete structure of plunger mat clamping is: the rear portion of plunger is provided with bayonet lock
Groove, is provided with spring in card cotter way, the outer end of spring connects has bayonet lock, described plunger mat front end to be provided with confession
The card joint chair that plunger inserts, is provided with the stopper slot coordinated with bayonet lock in card joint chair.
The present invention highlights and useful having the technical effect that compared to existing technology
1, form the eccentric axial portion of some sections on the main shaft of the present invention, instead of the eccentric bushing in traditional design
Structure, thus avoid eccentric bushing and can produce loosening after long-play, causes lacking of abnormal sound and abrasion
Fall into.
2, the connecting rod of the present invention end by self-lubricating bearing and plunger mat, self-lubricating bearing by bearing holder (housing, cover) and
Several pottery needle roller compositions, its plain bearing compared on the market (has location needle roller in traditional bearing
Plastic bushing, it easily ftractures after using a period of time), there is simple in construction, easy to assembly, safety can
The advantage leaned on.
3, being respectively installed with back-up ring on the bearing pin at the ceramic needle roller two ends of the present invention, back-up ring is folded in pottery needle roller
And between plunger mat inwall and stop pottery needle roller end contact plunger mat, this design make pottery needle roller not
Meeting contact plunger, thus avoid pottery needle roller and broken by plunger mat card so that overall service life is increased
By force.
4, the self-lubricating plunger bushing of the present invention is polyimides product, and it has the performance of excellence, thus avoids
The shortcoming that Traditional project plastics easily ftracture and wear and tear.
5, the connecting rod of the present invention is banding set, and banding set is held tightly right by being arranged on the clamping screw of its front end
On the bearing answered；Main shaft is arranged on main shaft installation position by the base bearing at two ends, and the front side of pump cover is detachable
Be provided with rear door, this design make install time, first main shaft is arranged on pump case, by locking tool
Carry out screwing clamping screw by the window at rear door, such that it is able to avoid in traditional design, plunger mat
Centrage and the centrage off plumb shortcoming of main shaft, can be greatly improved entirety service life, keep away
Exempt from abnormal sound.
6, on the bearing pin outside the back-up ring of the present invention, fixed cover is arranged equipped with oil seal ring, the periphery of described oil seal ring
Having O, the inwall laminating of O and self-lubricating bearing installation position, two oil seal rings block in self-lubricating
The both sides of bearing installation position, this design makes the oils and fats on pottery needle roller to run off, it is ensured that self-lubricating bearing
Service life.
7, the plunger mat rear end of the present invention is provided with endoporus, and the outfan of connecting rod stretches into endoporus and is hinged on plunger
The middle part of seat；Described plunger mat is located on plunger bushing, and plunger bushing is fixedly mounted in the pump housing；Connecting rod defeated
Go out end to be hinged on the middle part of plunger mat and make the operation of plunger mat more stable, simplify plunger mat the most further
Drive mechanism with connecting rod.
8, the black box of the present invention can effectively prevent the water in plunger cavity from entering cylinder chamber, and reflux auxiliary set
Be designed to effectively intercept so that the water in plunger cavity oozed water seal, draining auxiliary set be designed to further
The current intercepted in plunger cavity oozed water seal.
9, the plunger of the present invention and plunger mat clamping, its simple in construction, be not easily disconnected from, safe and reliable, it is ensured that
The stable operation of complete machine.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of plunger displacement pump.
Fig. 2 is the exploded view of plunger displacement pump.
Fig. 3 is one of internal structure schematic diagram of plunger displacement pump.
Fig. 4 is enlarged drawing at the A of Fig. 3.
Fig. 5 is the two of the internal structure schematic diagram of plunger displacement pump.
Fig. 6 is the B enlarged drawing of Fig. 5.
Fig. 7 is the exploded view of plunger connecting rod drive mechanism.
Fig. 8 is the schematic diagram of main shaft.
Fig. 9 is the main shaft schematic diagram of another embodiment.
Figure 10 is one of main shaft and bearing assembling schematic diagram of another embodiment.
Figure 11 is the main shaft and the two of bearing assembling schematic diagram of an embodiment.
Figure 12 is the exploded view of the earlier application of the present invention.
Figure 13 is main shaft and the plunger mechanism cooperation schematic diagram of the earlier application of the present invention.
Figure 14 is enlarged drawing at the A of Figure 13.
Figure 15 is enlarged drawing at the B of Figure 13.
Figure 16 is self-lubricating bearing and the cooperation schematic diagram of plunger mat of the earlier application of the present invention.
Figure 17 is the structural representation of the ceramic plunger expansion cracking proof of the earlier application of the present invention.
Figure 18 is the schematic diagram of the main shaft of the earlier application of the present invention.
In figure: 1-input flange；The 2-pump housing；3-pump cover；4-exhalant canal；5-intake tunnel；6-seals
Assembly；7-plunger bushing；8-connecting rod；9-plunger；10-main shaft；11-bearing；12-eccentric axial portion；13-makes pottery
Porcelain needle roller；14-bearing holder (housing, cover)；15-inner shield ring；16-jump ring；17-guide pin bushing；18-plunger mat；The outer back-up ring of 19-；
20-bearing pin；21-clamping screw；22-bearing；23-bayonet lock；24-spring；25-auxiliary set；26-water seal；27-
Drainage channel；28-draining auxiliary set；29-sealing ring；30-water seal；31-drainage channel；32-refluxes auxiliary set；
33-the main water seal of level；34-auxiliary set；35-sealing ring；The main water seal of 36-；37-backflash；38-banding set；
39-O shape circle；40-self-lubricating bearing installation position；41-pin shaft hole position；42-rhone；43-drainage hole；
44-backflow through hole；45-outfan；46-banding portion；47-base bearing；48-base bearing；49-eccentric axial portion；
50-eccentric axial portion；51-bonnet；52-eccentric axial portion；53-pump head；54-cylinder chamber；55-main shaft installation position；
56-main shaft installation position；57-card joint chair；58-jump-ring slot；59-ball grooves；60-skeleton；61-back-up ring；62-
Eccentric axial portion；63-bearing outer ring；64-ball；
The a1-pump housing；A 2-main shaft installation position；A 3-main shaft installation position；A 4-self-lubricating plunger bushing；A 5-post
Obturating plug；A 6-base bearing I；A 7-connecting rod III；A 8-connecting rod II；A 9-connecting rod I；A 10-input flange；
A 11-base bearing II；A 12-clamping screw；A 13-main shaft installation position；A 14-pump cover；Door after a 15-；
A 16-jump ring I；A 17-bearing I；A 18-bearing II；A 19-jump ring II；A 20-clamping screw；a 21-
Bearing III；A 22-jump ring III；A 23-eccentric axial portion I；A 24-eccentric axial portion II；A 25-eccentric axial portion
Ⅲ；A 26-locking end；A 27-back-up ring；A 28-outer bearing sleeve；A 29-pottery needle roller；A 30-inner bearing
Set；A 31-articulated column；A 32-back-up ring；A 33-ceramic plunger；A 34-screw rod；A 35-sealing ring；a 36-
End cover；A 37-cylinder body；A 38-base bearing II installation portion；A 39-jump-ring slot I；A 40-bearing I
Installation portion；A 41-main shaft；A 42-bearing II installation portion；A 43-jump-ring slot II；A 44-bearing III is installed
Portion；A 45-jump-ring slot III；A 46-base bearing I installation portion.
Detailed description of the invention
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings:
Plunger oil-free high-pressure pump, including pump case, is provided with main shaft 10 and that main shaft 10 drives is some in pump case
Individual plunger mechanism, the present embodiment is 4；Plunger mechanism includes plunger mat 18 and connecting rod 8, and connecting rod one end is
Outfan 45, the outfan 45 of described connecting rod stretches into plunger mat 18 rear end hinged with plunger mat 18, plunger
The front end of seat is provided with plunger 9, and the outfan of described connecting rod 8 is provided with self-lubricating bearing installation position 40, from
Lubrication is provided with bearing holder (housing, cover) 14 in bearing installation position 40, and the central authorities of bearing holder (housing, cover) 14 are equipped with a bearing pin 20,
The two ends projecting shaft bearing sleeve 14 of bearing pin 0 is also arranged in plunger mat 18,20 weeks sides of bearing pin and bearing holder (housing, cover) 14
The ceramic needle roller 13 of a circle it is densely covered with between inwall；Overlap respectively on the bearing pin 20 at described pottery needle roller 13 two ends
Equipped with back-up ring 15, back-up ring 15 is folded between pottery needle roller 13 and plunger mat 18 inwall and stops pottery needle roller
The end contact plunger mat 18 of 13.Self-lubricating bearing is made up of bearing holder (housing, cover) and several pottery needle rollers, and it is compared
Plain bearing on the market (has the plastic bushing of location needle roller, after it uses a period of time in traditional bearing
Easily cracking), there is simple in construction, advantage easy to assembly, safe and reliable, pottery needle roller will not contact
Plunger, thus avoid pottery needle roller and broken by plunger mat card so that overall service life is strengthened.
Being set with oil seal ring 19 on bearing pin 20 outside described back-up ring 15, the periphery of described oil seal ring 19 is arranged
There is O 39, the inwall laminating of O 39 and self-lubricating bearing installation position 40.Two oil seal ring closure
In the both sides of self-lubricating bearing installation position, this design makes the oils and fats on pottery needle roller to run off, it is ensured that from
The service life of lubrication bearing.
Described plunger mat 18 rear end is provided with endoporus, and the outfan of connecting rod stretches into endoporus and is hinged on plunger mat 18
Middle part；Described plunger mat 18 is located on plunger bushing 7, and plunger bushing 7 is fixedly mounted in the pump housing 2.Even
The outfan of bar is hinged on the middle part of plunger mat and makes the operation of plunger mat more stable, simplifies the most further
Plunger mat and the drive mechanism of connecting rod.
Front end and the back segment of described plunger mat 18 are provided with stage portion, outside the step surface of stage portion is provided with
Screw thread, guide pin bushing 17 rotation is located in stage portion, and the outer wall of guide pin bushing 17 is slidably matched with plunger bushing 7 inwall.Lead
Set 17 and plunger bushing 7 all can use rustless steel product or ceramic objects or Engineering Plastics Parts, the present embodiment
In, plunger bushing 7 uses rustless steel product, guide pin bushing 17 to use Engineering Plastics Parts.
The eccentric axial portion 52 of some sections is formed on described main shaft, 12,49,50, eccentric axial portion is all set with
There is bearing；The other end of described connecting rod is banding set 38, and banding set 38 is held tightly right by clamping screw 21
On the bearing answered.Eccentric axial portion instead of the eccentric bushing structure in traditional design, thus avoid eccentric bushing and exist
Can produce loosening after long-play, cause the defect of abnormal sound and abrasion.Meanwhile, connecting rod uses banding
Mode be arranged on correspondence bearing on so that the cooperation between bearing and main shaft, between bearing and connecting rod is more
For accurately.
The cross section of the eccentric axial portion 52,12,49,50 of each section is the most identical；The eccentric shaft of existing main shaft
Portion uses the design of different eccentric throw mostly, and the bearing of its coupling also has different specifications, causes on main shaft
Distribution of weight uneven, the weight of each eccentric axial portion is different with inertia, noise is relatively big and long time running it
After, bearing can be moved；Accordingly, it would be desirable to process jump-ring slot in eccentric axial portion, entered by jump ring
One step location bearing, but, jump-ring slot can cause the anti-shearing force of main shaft to decline, axle service life reduction；This reality
With a novel wherein main shaft design as shown in Figure 8: the eccentric axial portion 52,12,49,50 of each section
Cross section is the most identical, and the bearing of coupling is also adopted by identical specification, and connecting rod is the most identical, therefore, and spindle operation
Time, the load that each section of eccentric axial portion undertakes is identical, and it is low that it has noise, and stable is excellent
Point.Another spindle design of the present utility model is as shown in figs. 9-10: cave inward in the middle part of the axial plane of eccentric axial portion
Forming ball grooves 59, be provided with ball 64 in ball grooves, ball grooves outer sheath is equipped with the axle of detent ball 64
Bearing outer-ring 63, the both sides of bearing outer ring 64 are provided with skeleton 60, and this design eliminates the design of jump-ring slot,
Meanwhile, fundamentally stopped the bearing displacement problem in eccentric axial portion, further increased the intensity of main shaft
And service life；It addition, connecting rod has used the design that is connected on bearing of banding formula also the easiest bearing
Installation.
Described pump case includes pump cover 3 and the pump housing 2, in the cylinder chamber 84 that plunger mechanism is arranged in the pump housing；Pump cover
3 and the pump housing 2 arranged on left and right sides interface on be respectively provided with main shaft installation position 55,56；Main shaft passes through two ends
Base bearing 47,48 be arranged on main shaft installation position 55, on 56, the front side of pump cover be detachably provided with lock
Tight lid 51；When this design makes to install, first main shaft is arranged on pump case, locking tool is being passed through backstop
Window at lid carries out screwing clamping screw, such that it is able to avoid in traditional design, and the centrage of plunger mat
With the centrage off plumb shortcoming of main shaft, the service life of entirety can be greatly improved, it is to avoid abnormal sound.
Plunger cavity in the described pump housing is provided with the black box 6 coordinated with described plunger 9, black box bag
Include together above water seal 36,33,30,26, it is provided with auxiliary set 34 between adjacent twice water seal, 32,28,
25；One of them auxiliary set is backflow auxiliary set 32, and the circumference of backflow auxiliary set 32 forms several backflow through hole
44, the pump housing is provided with and the drainage channel 31 of backflow through hole conducting, drainage channel 31 leads to the water inlet of the pump housing
Road 5 connects.Being designed to of backflow auxiliary set effectively intercepts the water so that in plunger cavity and oozed water seal.The present invention
Water seal be Engineering Plastics Parts, the inner edge of water seal and plunger sidewall are fitted and are blocked water.Plunger is ceramic objects.
One of them auxiliary set is draining auxiliary set 28, and the circumference of draining auxiliary set 28 forms several drainage holes
43, the pump housing is provided with and the drainage channel 27 of drainage hole 43 conducting, outside drainage channel 27 and the pump housing
Connection.The current being designed to intercept in plunger cavity further of draining auxiliary set oozed water seal.
Being provided with four road water seals in the present embodiment altogether, it has thoroughly been stopped the water in plunger cavity and has entered the peace of cylinder body
Full hidden danger.
The rear end of described plunger with the concrete structure of plunger mat clamping is: the rear portion of plunger 9 is provided with jump-ring slot,
Being provided with jump ring 16 in jump-ring slot 47, described plunger mat front end is provided with the card joint chair 57 inserted for plunger,
The stopper slot coordinated with jump ring it is provided with in card joint chair；
Or, the rear end of described plunger with the concrete structure of plunger mat clamping is: the rear portion of plunger 9 is provided with card
Cotter way, is provided with spring 24 in card cotter way, the outer end of spring 24 connects has bayonet lock 23, before described plunger mat
End is provided with the card joint chair 57 inserted for plunger, is provided with the stopper slot coordinated with bayonet lock in card joint chair.Its knot
Structure is simple, is not easily disconnected from, safe and reliable, it is ensured that the stable operation of complete machine.In the present embodiment, it is also possible to
Further when plunger assembles, first it is stained with colloid, then snaps fits into plunger mat, further ensure that stablizing of plunger.
The a earlier application of the present invention is as shown in Fig. 9-15, and plunger oil-free high-pressure pump, including pump case, pump case
Several plunger mechanism that main shaft a41 and main shaft a41 drives inside are installed, if forming on described main shaft a41
(the present embodiment is 3 to the eccentric axial portion of dry section, i.e. eccentric axial portion I a23；Eccentric axial portion II a24；Eccentric
Axle portion III a25), eccentric axial portion is all set with bearing (that is, bearing I a17；Bearing II a18, bearing III
A21), bearing is distinguished fixed cover connecting rod (that is, connecting rod III a7 equipped with plunger mechanism；Connecting rod II a8；Even
Bar I a9), rod rear end is provided with self-lubricating bearing, and connecting rod is by the end of self-lubricating bearing with plunger mat a5
Portion is hinged.Form the eccentric axial portion of some sections on the main shaft of the present invention, instead of the bias in traditional design
Nested structure, thus avoid eccentric bushing and can produce loosening after long-play, causes abnormal sound and abrasion
Defect；
Described self-lubricating bearing is made up of outer bearing sleeve a28, internal bearing sleeve a30 and several potteries needle roller a29；
Described outer bearing sleeve a28 and internal bearing sleeve a30 arranged concentric, between outer bearing sleeve a28 and internal bearing sleeve a30
Being densely covered with the described pottery needle roller a29 of a circle, outer bearing sleeve and internal bearing sleeve are bearing steel product.Self-lubricating axle
Hold the plain bearing compared on the market and (have the plastic bushing of location needle roller in traditional bearing, its use section
Easily ftracture after time), there is simple in construction, advantage easy to assembly, safe and reliable.
In the end of described connecting rod is the fluting stretching into plunger mat end, the plunger mat end cross at fluting sets
Being equipped with articulated column, articulated column passes the self-lubricating bearing of interlinking lever end and realizes the activity of connecting rod and plunger mat even
Connect.
The two ends of described internal bearing sleeve a30 are stretched out outer bearing sleeve a28 and are respectively installed with back-up ring a27, back-up ring a27
It is folded between pottery needle roller a29 and plunger mat a5 and stops the end contact plunger mat of pottery needle roller, described
The thickness of the length the stretching out outer bearing sleeve >=back-up ring a27 of internal bearing sleeve.Back-up ring is freely rotatable on articulated column,
Limit the range of activity of pottery needle roller, this design make pottery needle roller will not contact stud obturating plug, thus avoid
Ceramic needle roller is broken by plunger mat card so that overall service life is strengthened.
Described plunger mat is located in self-lubricating plunger bushing, and self-lubricating plunger bushing is fixedly mounted in pump case, from
Lubrication plunger bushing is polyimides product.It has the performance of excellence, thus avoids Traditional project plastics and hold
Shortcoming easy to crack.
Described connecting rod is banding set, and banding set is held tightly at corresponding axle by being arranged on the clamping screw of its front end
Hold；Extension on rear side of described banding set forms hinged end, the endoporus of hinged end is installed with described from
Lubrication bearing.Described pump case includes pump cover and the pump housing, and plunger mechanism is arranged in the cylinder chamber in the pump housing；Pump cover
Be respectively provided with main shaft installation position on the interface of pump housing arranged on left and right sides；Main shaft is pacified by the base bearing at two ends
Being contained on main shaft installation position, the front side of pump cover is detachably provided with rear door.
When this design makes to install, first main shaft is arranged on pump case, at by locking tool by rear door
Window carry out screwing clamping screw, such that it is able to avoid in traditional design, the centrage of plunger mat and master
The centrage off plumb shortcoming of axle, can be greatly improved the service life of entirety, it is to avoid abnormal sound.
The front end of plunger mat a5 is provided with stud a34, and stud a34 is set with ceramic plunger a33, ceramics pole
In the groove of plunger mat a5 front end is stretched in the inner of plug a33 and groove wall of fitting；Outside ceramic plunger a33
End is provided with end cover a36, and the contact surface of ceramic plunger a33 and end cover a36 is provided with sealing ring
A35, in ceramic plunger is stretched in the inner side at the middle part of end cover and spins with described stud a34, and this design makes
When obtaining plunger activity, the hydraulic pressure in cylinder body a37 can not be entered in it by the outer end of ceramic plunger a33, thus
Avoid ceramic plunger a33 spalling under the effect of hydraulic pressure.
The application revises the most further, further increases the stability of plunger displacement pump.
Above-described embodiment is only presently preferred embodiments of the present invention, limits the scope of the invention the most according to this,
Therefore: the equivalence change that all structures under this invention, shape, principle are done, the guarantor of the present invention all should be covered by
Within the scope of protecting.
Claims (10)
1. plunger oil-free high-pressure pump, it is characterised in that include pump case, is provided with main shaft and main shaft band in pump case
Several dynamic plunger mechanism, plunger mechanism includes that plunger mat and connecting rod, connecting rod one end are outfan, described
The outfan of connecting rod stretches into plunger mat rear end hinged with plunger mat, and the front end of plunger mat is provided with plunger, institute
The outfan stating connecting rod is provided with self-lubricating bearing installation position, and self-lubricating bearing is provided with bearing holder (housing, cover) in installation position,
The central authorities of bearing holder (housing, cover) are equipped with a bearing pin, and the two ends projecting shaft bearing sleeve of bearing pin is also arranged in plunger mat, pin
Axle week side and bearing holder (housing, cover) inwall between be densely covered with the ceramic needle roller of a circle；On the bearing pin at described pottery needle roller two ends
Being respectively installed with back-up ring, back-up ring is folded between pottery needle roller and plunger mat inwall and stops the end of pottery needle roller
Face contact stud obturating plug.
Plunger oil-free high-pressure pump the most according to claim 1, it is characterised in that outside described back-up ring
Being set with oil seal ring on bearing pin, the periphery of described oil seal ring is provided with O, O and self-lubricating bearing
The inwall laminating of installation position.
Plunger oil-free high-pressure pump the most according to claim 1, it is characterised in that described plunger mat rear end
Being provided with endoporus, the outfan of connecting rod stretches into endoporus and is hinged on the middle part of plunger mat；Described plunger mat wears
On plunger bushing, plunger bushing is fixedly mounted in the pump housing.
Plunger oil-free high-pressure pump the most according to claim 3, it is characterised in that before described plunger mat
End and back segment are provided with stage portion, and stage portion is set with guide pin bushing, and the outer wall of guide pin bushing slides with plunger bushing inwall
Coordinate.
Plunger oil-free high-pressure pump the most according to claim 1, it is characterised in that molding on described main shaft
There is the eccentric axial portion of some sections, eccentric axial portion is all set with bearing；The other end of described connecting rod is banding set,
Banding set is held tightly on corresponding bearing by clamping screw.
Plunger oil-free high-pressure pump the most according to claim 5, it is characterised in that the eccentric shaft of each section
The cross section in portion is the most identical, and cave inward in the middle part of the axial plane of eccentric axial portion formation ball grooves, arranges in ball grooves
Having ball, ball grooves outer sheath is provided with skeleton equipped with the bearing outer ring of detent ball, the both sides of bearing outer ring.
Plunger oil-free high-pressure pump the most according to claim 1, it is characterised in that described pump case includes pump
Lid and the pump housing, plunger mechanism is arranged in the cylinder chamber in the pump housing；Pump cover and the interface of pump housing arranged on left and right sides
On be respectively provided with main shaft installation position；Main shaft is arranged on main shaft installation position by the base bearing at two ends, pump cover
Front side is detachably provided with tightening cover.
Plunger oil-free high-pressure pump the most according to claim 1, it is characterised in that the post in the described pump housing
Plug is provided with, in chamber, the black box coordinated with described plunger, and black box includes above water seal, phase
It is provided with auxiliary set between adjacent twice water seal；One of them auxiliary set is backflow auxiliary set, the circumferential molding of backflow auxiliary set
There are several backflow through hole, the pump housing are provided with and the drainage channel of backflow through hole conducting, drainage channel and pump
The intake tunnel connection of body.
Plunger oil-free high-pressure pump the most according to claim 8, it is characterised in that one of them auxiliary set is
Draining auxiliary set, the circumference of draining auxiliary set forms several drainage holes, the pump housing is provided with and drainage hole
The drainage channel of conducting, drainage channel and pump housing ft connection.
Plunger oil-free high-pressure pump the most according to claim 1, it is characterised in that after described plunger
End with the concrete structure of plunger mat clamping is: the rear portion of plunger is provided with jump-ring slot, is provided with card in jump-ring slot
Spring, described plunger mat front end is provided with the card joint chair inserted for plunger, is provided with and coordinates with jump ring in card joint chair
Stopper slot；
Or, the rear end of described plunger with the concrete structure of plunger mat clamping is: the rear portion of plunger is provided with bayonet lock
Groove, is provided with spring in card cotter way, the outer end of spring connects has bayonet lock, described plunger mat front end to be provided with confession
The card joint chair that plunger inserts, is provided with the stopper slot coordinated with bayonet lock in card joint chair.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087363.2A CN105971835A (en) | 2016-02-16 | 2016-02-16 | Plunger oil-free high-pressure pump |
| PCT/CN2017/000179 WO2017140188A1 (en) | 2016-02-16 | 2017-02-17 | Oil-free high-pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087363.2A CN105971835A (en) | 2016-02-16 | 2016-02-16 | Plunger oil-free high-pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971835A true CN105971835A (en) | 2016-09-28 |
Family
ID=56988486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610087363.2A Pending CN105971835A (en) | 2016-02-16 | 2016-02-16 | Plunger oil-free high-pressure pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105971835A (en) |
| WO (1) | WO2017140188A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017140188A1 (en) * | 2016-02-16 | 2017-08-24 | 梁国富 | Oil-free high-pressure plunger pump |
| CN112576496A (en) * | 2020-12-07 | 2021-03-30 | 浙江陆雄建鑫农业机械有限公司 | Plunger pump and plunger structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150446A (en) * | 2018-02-05 | 2018-06-12 | 成都弗格森液压机电有限公司 | A kind of aviation joins driving structure and motor pump group with magnetic |
| CN208416974U (en) * | 2018-05-04 | 2019-01-22 | 营口氟塑合金泵厂 | A kind of ceramic bearing fluorine modeling magnetic drive pump |
| CN110375002B (en) * | 2019-07-30 | 2024-06-18 | 苏州涂印仕机电工业有限公司 | Automatic butt joint mechanism for shaft |
| CN115228804A (en) * | 2022-08-12 | 2022-10-25 | 杨玉翠 | Circuit board cleaning device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017140188A1 (en) | 2017-08-24 |
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Application publication date: 20160928 |