CN107269521A - A kind of high-precision high voltage three screw pump bushing and manufacturing process - Google Patents
A kind of high-precision high voltage three screw pump bushing and manufacturing process Download PDFInfo
- Publication number
- CN107269521A CN107269521A CN201710690712.4A CN201710690712A CN107269521A CN 107269521 A CN107269521 A CN 107269521A CN 201710690712 A CN201710690712 A CN 201710690712A CN 107269521 A CN107269521 A CN 107269521A
- Authority
- CN
- China
- Prior art keywords
- bushing
- hole
- rod aperture
- seal
- lower bushing
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
- F04C2/165—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type having more than two rotary pistons with parallel axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses the upper bushing and lower bushing of a kind of high-precision high voltage three screw pump bushing and manufacturing process, including mutual cooperation, screw rod aperture member is provided between upper bushing and lower bushing, screw rod aperture member both sides, which are respectively equipped with sealing hole, sealing hole, is provided with seal；Described screw rod aperture member includes setting the mobile jib hole of the medium position between upper bushing and lower bushing, and mobile jib hole both sides are provided with from rod aperture；Upper bushing and lower bushing are subjected to location and installation by feeler gauge, and placement surface scribbles the seal of high-temperature seal adhesive in the sealing hole between upper bushing and lower bushing, completes the manufacturing of bushing.The present invention can effectively avoid friction loss increase and screw rod easily stuck etc. the bad phenomenon at composition surface because of caused by composition surface not in same plane；The present invention can also improve the reliability of bushing simultaneously, the fit clearance reduced between bushing and screw rod, reduce dielectric leakage amount, improve the pressure release of three screw pump.
Description
Technical field
The present invention relates to a kind of three screw pump bushing, particularly a kind of high-precision high voltage three screw pump bushing and manufacture work
Skill.
Background technology
The characteristics of three screw pump is flow trim, pressure fluctuation is small, have that suction capacity, noise are low, vibration is small, efficiency high,
It is compact conformation, small volume, reliable operation, long lifespan, easy to maintenance and can counter-rotating etc..It is widely used in ship, electric power, machine
Bed, elevator, oil product, hoisting apparatus, power-equipment etc. make conveying lubricating oil, fuel oil, hydraulic oil, Seal Oil and coolant
Deng.Piston pump and gear pump are substantially instead of in the lubricating oil and Fuel System of ship.Current high pressure three-screw pump is adopted
With it is more be that bushing and driven screw use segmentation structure.Screw rod bushing and driven screw are divided into composition surface same flat
Two sections or several sections of face.Due to foozle, the abrasion of bearing and pump in starting and shutdown driven screw can occur it is upper and lower
The factors such as play, and bushing and driven screw are to connect firmly integrally, and centering is also impossible to be consistent completely, is served as a contrast during operation
If the composition surface of both set and driven screw gently then increases friction loss not in same plane, serious resulting even in is connecing
Conjunction face place " killing " (i.e. stuck).
The content of the invention
It is an object of the present invention to provide a kind of high-precision high voltage three screw pump bushing and manufacturing process.The present invention can
It is effective to avoid friction loss increase and screw rod because of caused by composition surface not in same plane easily stuck etc. at composition surface
Bad phenomenon；The present invention can also improve the reliability of bushing simultaneously, the fit clearance reduced between bushing and screw rod, reduce and be situated between
Matter leakage rate, improves the pressure release of three screw pump.
Technical scheme：A kind of high-precision high voltage three screw pump bushing, including mutual cooperation upper bushing and under
Bushing, the middle part between upper bushing and lower bushing is provided with screw rod aperture member, and screw rod aperture member both sides are respectively equipped with sealing hole, seals
Seal is provided with hole；Described screw rod aperture member includes setting the mobile jib hole of the medium position between upper bushing and lower bushing,
Mobile jib hole both sides are provided with from rod aperture.
In a kind of foregoing high-precision high voltage three screw pump bushing, described upper bushing and lower bushing include bushing master
Body, the contact surface of liner body is provided with axial arranged mobile jib hole slot, mobile jib hole slot both sides be respectively equipped with it is axial arranged from
Rod aperture groove, from the outside of rod aperture groove provided with axial arranged in the seal groove on liner body contact surface.
In a kind of foregoing high-precision high voltage three screw pump bushing, the seal groove is semicircle pore structure, semicircle pore structure
Pass based on semicircle, semicircle both sides are respectively equipped with the contact surface opening being arranged symmetrically；Described contact surface opening includes
Eccentric circular portion and parabola branch, eccentric circular portion are made up of the eccentric off-centre operation in a lower section to the semicircle center of circle, eccentric
Round radius for semicircle radius and eccentric throw sum, parabola branch from one on the outside of off-centre operation extension it is parabola shaped
Into the center of circle on described parabolical summit, the center of circle of off-centre operation and semicircle is in same straight line, and parabolical one end is equal
It is tangent with corresponding off-centre operation.
In a kind of foregoing high-precision high voltage three screw pump bushing, described parabola and the point of contact of off-centre operation are corresponding to vertical
The angle of coordinate is 55o-65o, described parabolical disengaging angle is 15o-20o, the opening value of described eccentric circular portion with it is whole
The ratio of the opening value of individual contact surface opening is 0.43-0.55.
In a kind of foregoing high-precision high voltage three screw pump bushing, described liner body two ends are provided with fixed seat, fixed
Seat, which is provided with pin-and-hole, pin-and-hole, is provided with straight pin；The supporting plate of polylith semicircular structure is also evenly equipped with described liner body.
In a kind of foregoing high-precision high voltage three screw pump bushing, described seal is brass bar seal, brass bar
High-temperature seal adhesive is scribbled on the periphery of seal.
In the manufacturing process of three screw pump bushing for realizing a kind of foregoing high-precision high voltage, two mutual cooperations of making
Upper bushing and lower bushing, location and installation is carried out by upper bushing and lower bushing by feeler gauge, and between upper bushing and lower bushing
Placement surface scribbles the seal of high-temperature seal adhesive in sealing hole, completes the manufacturing of bushing；Upper and lower bushing when mounted,
Positioned respectively to mobile jib hole and from rod aperture using the feeler gauge of corresponding size, nut slowly tightened along with the rotation of feeler gauge,
After bolt and nut is tightened, it is compared by the internal diameter and the external diameter of corresponding feeler gauge by mobile jib hole and from rod aperture and calculates phase
Corresponding difference, difference then reselects feeler gauge size to upper beyond the claimed range of 6 grades of cylindricities and depth of parallelism form and position tolerance
Bushing and lower bushing are reinstalled, until difference is in the claimed range of 6 grades of cylindricities and depth of parallelism form and position tolerance, then
Pin hole is opened up on upper bushing and lower bushing, upper bushing and lower bushing are fixed by straight pin.
In a kind of manufacturing process of the three screw pump bushing of foregoing high-precision high voltage, described upper bushing and lower bushing
Specific manufacturing process：A reference plane, the thread mill drilling in reference plane are processed on liner body；Using reference plane as positioning
Face, bushing steel are arranged on bushing clamp for machining, and bushing clamp for machining is arranged on 4 axle machining centers by connecting shaft,
Three hole end surfaces and seal groove are processed on the contact surface of liner body, and leaves 0.25-0.40mm grinding allowance, while in bushing
Processing bolt connecting hole in the fixed seat at main body two ends, obtains rough machined upper bushing；Manufactured and served as a contrast under one by the above method
Set；Then rough machined upper bushing and lower bushing are connected with bolt and nut, the rough turn plug of bushing passes through mobile jib hole, to upper bushing
With the cylindrical carry out roughing of the supporting plate on lower bushing, 1-4mm chipping allowance is stayed, rough turn plug is taken out, takes upper bushing apart
With lower bushing；Then magnetic isometry block is set according to being distributed on grinder level table top for each face of reference plane, upper bushing
It is separately mounted to lower bushing by locating surface of reference plane on magnetic isometry block, with magnetic isometry block, the magnetic force of itself is fixed respectively
Bushing and lower bushing are lived in, emery wheel is corrected, fine grinding is carried out to upper bushing and lower bushing respectively, upper bushing and lower bushing is obtained
Finished product.
Compared with prior art, the present invention replaces tradition by the split type bush structure of upper bushing and lower bushing composition
Segmented insert structure, would not have the composition surface between bushing and driven screw using split type bush structure, and then
Friction loss increase, screw rod at composition surface easy " killing " because of caused by composition surface not in same plane can effectively be avoided
Etc. bad phenomenon；Meanwhile, the present invention by strictly controlling the production technology of upper bushing and lower bushing, come above and below improving bushing from
The precision of body, and by carrying out positioning assembling to split type bushing by special feeler gauge, it is ensured that mobile jib hole in bushing and
It is less than the requirement of 6 grades of cylindricities and depth of parallelism form and position tolerance from the cylindricity and the depth of parallelism of rod aperture, improves the reliable of bushing entirety
Property, the fit clearance that can effectively reduce between screw and bushing, so as to reduce the leakage loss of medium, indirectly can just be improved
The pressure release of three screw pump.The bushing processed using present invention process, 6 times of helical pitch length can reach plus compensation helical pitch
20MPa pressure release.In summary, the present invention can effectively avoid rubbing because of caused by composition surface not in same plane
Loss increase and screw rod easily stuck etc. the bad phenomenon at composition surface；The present invention can also improve the reliability of bushing simultaneously,
The fit clearance reduced between bushing and screw rod, reduces dielectric leakage amount, improves the pressure release of three screw pump.
In addition, the pass of the seal groove of semicircle pore structure is based on semicircle, set in semicircle both sides by eccentric circular portion
The contact surface opening constituted with parabola branch so that fluid sealant also can continue to keep even if the squeezing action by seal
In seal groove, on the contact surface that upper and lower bushing will not be extruded to, so as to reduce the fit clearance between bushing, subtract
Few dielectric leakage, improves sealing property.Meanwhile, by the way that parabolical disengaging angle is designed as into 15o-20o, by eccentric circular portion
The ratio of the opening value of opening value and whole contact surface opening is controlled in 0.43-0.55, is easy to store glue, so as to improve
The reliability of seal with buss.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of lower bushing；
Fig. 3 is the structural representation of the seal groove in upper bushing.
Mark in accompanying drawing for：Bushing under 1- upper bushings, 2-, 3- screw rod aperture members, 4- sealing holes, 5- seals, 6- linings
Cover main body, 7- mobile jib hole slots, 8- is from rod aperture groove, 9- seal grooves, 10- fixed seats, 11- pin-and-holes, 12- supporting plates, 301- mobile jibs hole,
302- is from rod aperture, Y1- semicircles, J- contact surface openings, Y2- bias circular portions, P- parabola branch, G- parabolas and off-centre operation
Point of contact corresponds to the angle of ordinate, the parabolical disengaging angles of X-, F- eccentric throws.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.A kind of high-precision high voltage three screw pump bushing, is constituted as shown in Figure 1 to Figure 3, including mutual cooperation is upper
Bushing 1 and lower bushing 2, the middle part between upper bushing 1 and lower bushing 2 are provided with screw rod aperture member 3, the both sides of screw rod aperture member 3 difference
Provided with sealing hole 4, seal 5 is provided with sealing hole 4；Described screw rod aperture member 3 include setting upper bushing 1 and lower bushing 2 it
Between medium position mobile jib hole 301, the both sides of mobile jib hole 301 are provided with from rod aperture 302.
Described upper bushing 1 and lower bushing 2 include liner body 6, and the contact surface of liner body 6 is provided with axial arranged
Mobile jib hole slot 7, the both sides of mobile jib hole slot 7 be respectively equipped with it is axial arranged from rod aperture groove 8, from the outside of rod aperture groove 8 provided with axially
It is arranged in the seal groove 9 on the contact surface of liner body 6.
The seal groove 9 is semicircle pore structure, and the pass of semicircle pore structure is based on semicircle Y1, semicircle Y1 both sides difference
Provided with the contact surface opening J being arranged symmetrically；Described contact surface opening J includes bias circular portion Y2 and parabola branch P, eccentric
Circular portion Y2 is made up of the eccentric off-centre operation in a lower section to the semicircle center of circle, and the radius of off-centre operation is the radius and bias of semicircle
Away from sum, parabola branch P from one on the outside of off-centre operation extension it is parabola shaped into described parabolical summit, bias
The round center of circle and the center of circle of semicircle are in same straight line, and parabolical one end is tangent with corresponding off-centre operation.
The angle G that described parabola and the point of contact of off-centre operation correspond to ordinate is 55o-65o, described is parabolical
It is 15 to depart from angle Xo-20o, the ratio of described eccentric circular portion Y2 opening value and whole contact surface opening J opening value is
0.43-0.55。
The described two ends of liner body 6 are provided with fixed seat 10, and fixed seat 10, which is provided with pin-and-hole 11, pin-and-hole 11, is provided with cylinder
Pin；The supporting plate 12 of polylith semicircular structure is also evenly equipped with described liner body 6.
Described seal 5 is to scribble fluid sealant on brass bar seal, the periphery of brass bar seal.
Described contact surface refer to above and below the side that is in contact of bushing.
The manufacturing process of the pass of the semicircle pore structure of the seal groove being arranged in upper bushing, on the basis of semicircle
On, make the off-centre operation that a center of circle is offset downward, the radius of off-centre operation is the radius and eccentric throw sum of semicircle, constitutes such as Fig. 3
It is shown, realize that the first time of pass extends out, then continue to make two sections of difference lower section and bottom right to the left on the basis of this off-centre operation
Fang Yanshen parabola, parabolical summit is located at the top in the basic circle center of circle, opening down, realizes extending out for the second time for pass,
Thus contact surface opening is formed in the both sides of semicircle.
Eccentric circular portion is mainly for the protection of seal, and storage fluid sealant.Parabola branch can prevent fluid sealant
Be squeezed outflow seal groove so that fluid sealant, toward seal groove internal flow, reduces the leakage of fluid sealant when being squeezed.
The manufacturing process of the pass of the semicircle pore structure of the seal groove being arranged on lower bushing, on the basis of semicircle
On, make the off-centre operation that a center of circle is offset up, the radius of off-centre operation is the radius and eccentric throw sum of semicircle, realizes pass
Extend out for the first time, then continue to make two sections of parabolas to upper left side and upper right side extended respectively on the basis of this off-centre operation,
Parabolical summit is located at the lower section in the basic circle center of circle, opening up, extending out for the second time for pass is realized, thus the two of semicircle
Side forms contact surface opening.
The section of described mobile jib hole slot 7 is that liner body center is the center of circle, and radius is 35mm semicircular structure；It is described
The section from rod aperture groove 8 to offset the bias of 40-45mm, radius as 20-22mm to the left or to the right using the center of circle of mobile jib hole slot 7
Semi-circular structure.From rod aperture groove 8 and the intersection of mobile jib hole slot 7 provided with the rounding angle that radius is 1-2mm, and from rod aperture groove 7 and semicircle
The intersection of the horizontal contact face of post liner body 6 is provided with the rounding that radius is 1mm.
A kind of manufacturing process of the three screw pump bushing of high-precision high voltage, makes two upper bushings cooperated and lower lining
Set, carries out location and installation, and placed in the sealing hole between upper bushing and lower bushing by upper bushing and lower bushing by feeler gauge
Surface scribbles the seal of high-temperature seal adhesive, completes the manufacturing of bushing；Upper and lower bushing when mounted, using corresponding size
Feeler gauge positioned respectively to mobile jib hole and from rod aperture, slowly tighten nut along with the rotation of feeler gauge, bolt and nut is tightened
Afterwards, it is compared by the external diameter of the internal diameter by mobile jib hole and from rod aperture and corresponding feeler gauge and calculates corresponding difference,
Difference then reselects feeler gauge size to upper bushing and lower lining beyond the claimed range of 6 grades of cylindricities and depth of parallelism form and position tolerance
Set is reinstalled, until difference is in the claimed range of 6 grades of cylindricities and depth of parallelism form and position tolerance, then in upper bushing with
Pin hole is opened up on bushing, upper bushing and lower bushing are fixed by straight pin.
Described upper bushing and the specific manufacturing process of lower bushing：A reference plane is processed on liner body, in benchmark
Thread mill drilling on face；Using reference plane as locating surface, bushing steel are arranged on bushing clamp for machining, bushing clamp for machining leads to
Connecting shaft is crossed installed in 4 axle machining centers, three hole end surfaces and seal groove are processed on the contact surface of liner body, and leave
0.25-0.40mm grinding allowance, while the processing bolt connecting hole in the fixed seat at liner body two ends, obtains rough machined
Upper bushing；One lower bushing is manufactured by the above method；Then rough machined upper bushing and lower bushing are connected with bolt and nut,
The rough turn plug of bushing pass through mobile jib hole, carry out positioning processing with plug, to the supporting plate in upper bushing and lower bushing it is cylindrical enter
Row roughing, stays 1-4mm chipping allowance, takes out rough turn plug, takes upper bushing and lower bushing apart；Then according to each of reference plane
Being distributed on grinder level table top for individual face sets magnetic isometry block, and upper bushing and lower bushing are distinguished by locating surface of reference plane
On magnetic isometry block, with magnetic isometry block, the magnetic force of itself fixes upper bushing and lower bushing respectively, corrects emery wheel, point
It is other that fine grinding is carried out to upper bushing and lower bushing, obtain the finished product of upper bushing and lower bushing.
The requirement of 6 grades of cylindricities and depth of parallelism form and position tolerance is that mobile jib hole and cylindricity and the depth of parallelism from rod aperture are less than
0.01mm。
The course of work of the present invention：High-precision high voltage bushing mainly includes upper bushing 1 and lower bushing 2.The wherein He of upper bushing 1
Brass bar seal is installed, brass bar seal is cylindrical to be applied in sealing hole 4 of the lower composition surface of bushing 2 provided with axial direction, sealing hole 4
There is high-temperature seal adhesive.When upper bushing 1 and lower bushing 2 first pass through connecting bolt nut and linked together, middle three hole be provided with from
Rod aperture feeler gauge and mobile jib stopple rule, wherein having multigroup different size from rod aperture feeler gauge and mobile jib stopple rule, according to upper and lower bushing
Three hole sizes with choosing.During installation, rotate and advised from rod aperture feeler gauge and mobile jib stopple, slowly tighten connecting bolt nut, until twisting
Tight bolt and nut, moreover it is possible to rotate untill being advised from rod aperture feeler gauge and mobile jib stopple.Take out from rod aperture feeler gauge and mobile jib stopple and advise, with thousand
The measurement of point table is compared from bar and mobile jib hole size, and feeler gauge external diameter, and whether difference is in the range of, beyond then changing another packet size
In the range of feeler gauge reinstall；Difference then pin hole in the range of, loads onto straight pin.
The specific processing mode of upper and lower bushing of high-precision high voltage is as follows：
The hole face of upper bushing 1 down, roughing reference plane, then finish reference plane, finally with wheel grinding reference plane each
Face, it is ensured that each facial plane degree of reference plane meets the requirements.
Beat the connection screw thread hole in each face of reference plane.
Using reference plane as locating surface, upper bushing 1 is arranged in bushing Special Fixture for Machining, bushing Special Fixture for Machining is again
It is arranged on by bushing Special Fixture for Machining connecting shaft on 4 axle machining centers, upper bushing 1 is processed by the special procedure of bushing
Three hole end surfaces and seal groove, stay grinding allowance be used for finish, be drilled bolt connecting hole.
In the same way by the lower bushing 2. of above-mentioned steps processing
Upper bushing 1 and lower bushing 2 are linked together with connecting bolt nut, middle mobile jib hole passes through the rough turn core of bushing
Rod, roughing upper bushing 1 and lower bushing 2 coordinate the cylindrical of installation with the pump housing, stay certain surplus.
By upper bushing 1 and lower bushing 2 it is rough turn it is good after, take out rough turn plug, take upper bushing 1 and lower bushing 2 apart.In grinding machine water
Magnetic isometry block is set according to the distribution in each face of reference plane of upper bushing 1 in flat surface, upper bushing 1 using reference plane as locating surface
On magnetic isometry block, with magnetic isometry block, the magnetic force of itself fixes upper bushing 1, corrects and is served as a contrast on emery wheel, fine grinding
Set 1.Lower bushing 2 is processed in this approach.
Claims (8)
1. a kind of high-precision high voltage three screw pump bushing, it is characterised in that：Upper bushing (1) and lower bushing including mutual cooperation
(2), the middle part between upper bushing (1) and lower bushing (2) is provided with screw rod aperture member (3), and screw rod aperture member (3) both sides are respectively equipped with
Seal (5) is provided with sealing hole (4), sealing hole (4)；Described screw rod aperture member (3) includes setting upper bushing (1) and lower lining
The mobile jib hole (301) of the medium position between (2) is covered, mobile jib hole (301) both sides are provided with from rod aperture (302).
2. a kind of high-precision high voltage three screw pump bushing according to claim 1, it is characterised in that：Described upper bushing
(1) and lower bushing (2) includes liner body (6), the contact surface of liner body (6) is provided with axial arranged mobile jib hole slot
(7), mobile jib hole slot (7) both sides are respectively equipped with axial arranged from rod aperture groove (8), and axial cloth is provided with from the outside of rod aperture groove (8)
The seal groove (9) being placed on liner body (6) contact surface.
3. a kind of high-precision high voltage three screw pump bushing according to claim 2, it is characterised in that：The seal groove (9)
For semicircle pore structure, the pass of semicircle pore structure is based on semicircle (Y1), and semicircle (Y1) both sides are respectively equipped with what is be arranged symmetrically
Contact surface opening (J)；Described contact surface opening (J) includes eccentric circular portion (Y2) and parabola branch (P), eccentric circular portion
(Y2) be made up of the eccentric off-centre operation in a lower section to the semicircle center of circle, the radius of off-centre operation for semicircle radius and eccentric throw it
With, parabola branch (P) from one on the outside of off-centre operation extension it is parabola shaped into described parabolical summit, off-centre operation
The center of circle and the center of circle of semicircle be in same straight line, and parabolical one end is tangent with corresponding off-centre operation.
4. a kind of high-precision high voltage three screw pump bushing according to claim 3, it is characterised in that：Described parabola with
The angle (G) that the point of contact of off-centre operation corresponds to ordinate is 55 ° -65 °, and described parabolical disengaging angle (X) is 15 ° -20 °,
The ratio of the opening value of described eccentric circular portion (Y2) and the opening value of whole contact surface opening (J) is 0.43-0.55.
5. a kind of high-precision high voltage three screw pump bushing according to claim 2, it is characterised in that：Described liner body
(6) two ends are provided with fixed seat (10), and fixed seat (10), which is provided with pin-and-hole (11), pin-and-hole (11), is provided with straight pin；Described lining
The supporting plate (12) of polylith semicircular structure is also evenly equipped with set main body (6).
6. a kind of high-precision high voltage three screw pump bushing according to claim 1, it is characterised in that：Described seal
(5) it is brass bar seal, fluid sealant is scribbled on the periphery of brass bar seal.
7. a kind of manufacturing process of the three screw pump bushing of high-precision high voltage according to claim 1, it is characterised in that：System
Make two upper bushings cooperated and lower bushing, upper bushing and lower bushing are subjected to location and installation by feeler gauge, and in upper lining
Placement surface scribbles the seal of high-temperature seal adhesive in sealing hole between set and lower bushing, completes the manufacturing of bushing；Upper,
Lower bushing when mounted, is positioned to mobile jib hole and from rod aperture respectively using the feeler gauge of corresponding size, along with turning for feeler gauge
It is dynamic slowly to tighten nut, after bolt and nut is tightened, entered by the external diameter of internal diameter and corresponding feeler gauge by mobile jib hole and from rod aperture
Go relatively and calculate corresponding difference, difference is then reselected beyond the requirement of 6 grades of cylindricities and depth of parallelism form and position tolerance
Feeler gauge size is reinstalled to upper bushing and lower bushing, until difference in 6 grades of cylindricities and depth of parallelism form and position tolerance will
In the range of asking, then in upper bushing and lower bushing pin hole is opened up, upper bushing and lower bushing are fixed by straight pin.
8. a kind of manufacturing process of the three screw pump bushing of high-precision high voltage according to claim 7, it is characterised in that institute
The upper bushing and the specific manufacturing process of lower bushing stated：A reference plane is processed on liner body, spiral shell is processed in reference plane
Pit；Using reference plane as locating surface, bushing steel are arranged on bushing clamp for machining, bushing clamp for machining is pacified by connecting shaft
Mounted in 4 axle machining centers, three hole end surfaces and seal groove are processed on the contact surface of liner body, and leave 0.25-0.40mm's
Grinding allowance, while the processing bolt connecting hole in the fixed seat at liner body two ends, obtains rough machined upper bushing；By upper
State method and manufacture a lower bushing；Then rough machined upper bushing and lower bushing are connected with bolt and nut, the rough turn plug of bushing
Through mobile jib hole, 1-4mm chipping allowance is stayed in the cylindrical carry out roughing to the supporting plate in upper bushing and lower bushing, is taken out
Rough turn plug, takes upper bushing and lower bushing apart；Then set according to being distributed on grinder level table top for each face of reference plane
Magnetic isometry block, is separately mounted to upper bushing and lower bushing by locating surface of reference plane on magnetic isometry block, contour with magnetic
The magnetic force of block itself fixes upper bushing and lower bushing respectively, corrects emery wheel, and carrying out fine grinding to upper bushing and lower bushing respectively adds
Work, obtains the finished product of upper bushing and lower bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690712.4A CN107269521B (en) | 2017-08-14 | 2017-08-14 | A kind of high-precision high voltage three screw pump bushing and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690712.4A CN107269521B (en) | 2017-08-14 | 2017-08-14 | A kind of high-precision high voltage three screw pump bushing and manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269521A true CN107269521A (en) | 2017-10-20 |
| CN107269521B CN107269521B (en) | 2018-06-29 |
Family
ID=60080318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710690712.4A Active CN107269521B (en) | 2017-08-14 | 2017-08-14 | A kind of high-precision high voltage three screw pump bushing and manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269521B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546007A (en) * | 2020-05-13 | 2020-08-18 | 福建省德鑫机械制造有限公司 | Manufacturing process of copper alloy casting with semicircular inner hole |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2306340Y (en) * | 1996-12-31 | 1999-02-03 | 西安交通大学 | Double screw-type pump case for oil and gas mixed delivering |
| US6005214A (en) * | 1996-06-26 | 1999-12-21 | Cramer; Margaret D. | Method of making wear resistant material lined housings |
| CN101541461A (en) * | 2007-07-24 | 2009-09-23 | 布林克曼泵业K.H.布林克曼两合公司 | Method for producing a machine housing with a surface-hardened fluid chamber |
| CN201953649U (en) * | 2010-12-29 | 2011-08-31 | 陈思 | Adjustable three screw pump sleeve |
| CN203272127U (en) * | 2013-03-20 | 2013-11-06 | 浙江威隆机械科技有限公司 | Wear-resisting device of rotor pump |
| CN106762656A (en) * | 2017-01-21 | 2017-05-31 | 浙江创为真空设备有限公司 | A kind of pump case of screw vacuum pump |
-
2017
- 2017-08-14 CN CN201710690712.4A patent/CN107269521B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6005214A (en) * | 1996-06-26 | 1999-12-21 | Cramer; Margaret D. | Method of making wear resistant material lined housings |
| CN2306340Y (en) * | 1996-12-31 | 1999-02-03 | 西安交通大学 | Double screw-type pump case for oil and gas mixed delivering |
| CN101541461A (en) * | 2007-07-24 | 2009-09-23 | 布林克曼泵业K.H.布林克曼两合公司 | Method for producing a machine housing with a surface-hardened fluid chamber |
| CN201953649U (en) * | 2010-12-29 | 2011-08-31 | 陈思 | Adjustable three screw pump sleeve |
| CN203272127U (en) * | 2013-03-20 | 2013-11-06 | 浙江威隆机械科技有限公司 | Wear-resisting device of rotor pump |
| CN106762656A (en) * | 2017-01-21 | 2017-05-31 | 浙江创为真空设备有限公司 | A kind of pump case of screw vacuum pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546007A (en) * | 2020-05-13 | 2020-08-18 | 福建省德鑫机械制造有限公司 | Manufacturing process of copper alloy casting with semicircular inner hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107269521B (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201231447Y (en) | High pressure and high precision energy-saving dynamic-static pressure bearing for numerically controlling crank shaft grinding machine | |
| CN101403374B (en) | Light energy-saving axial plunger pump | |
| CN107127610A (en) | A kind of self-alignment cramping arrangement of workpiece inner periphery | |
| CN204609823U (en) | Adjustable auto-strengthening piston rod sealer for pumping oil | |
| CN207058132U (en) | A kind of self-alignment cramping arrangement of workpiece inner periphery | |
| CN104772633A (en) | Floating tooling | |
| CN107269521A (en) | A kind of high-precision high voltage three screw pump bushing and manufacturing process | |
| CN207033725U (en) | A kind of high-precision high voltage three screw pump bushing | |
| CN202100853U (en) | Flange | |
| CN108381340A (en) | A kind of asymmetric connecting shaft combination bearing, mill machining tool, mill processing method | |
| RU2465986C1 (en) | Spindle assembly | |
| CN112059559B (en) | Joint ball seat turning and milling combined machining and inner spherical surface grinding method | |
| CN105773392A (en) | Tappet hole finish machining honing cutter and machining method | |
| CN110748557A (en) | Novel damping aligning slide bearing | |
| CN208106982U (en) | A kind of list four oil film wedge inner hole heavy-duty sliding bearing of rotation direction | |
| CN102913688A (en) | Delivery pipe, manufacturing method thereof and concrete pumping device | |
| CN110454380B (en) | Crosshead for plunger pump and processing and manufacturing method thereof | |
| CN207120116U (en) | A kind of rolling column type flexible polishing milled head for steel tube inner hole | |
| CN207930314U (en) | Adjustable Crankshaft Machining fixture | |
| CN105626693A (en) | Spiral groove radial sliding bearing lubricated by grease | |
| CN115001226A (en) | Machining and assembling process for reducing radial displacement of motor shaft | |
| CN213889472U (en) | Casting polishing device | |
| CN220548112U (en) | Online coping device of superfine positioning seat | |
| CN220248672U (en) | Axis self-adaptive adjusting sliding mechanism | |
| CN1904401A (en) | Supporting bearing for ball grinding machine and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 323000 85, Lishui Road, Zhejiang. Applicant after: ZHEJIANG WEIKENTE INTELLIGENT MACHINERY CO.,LTD. Address before: 323000 No. 85, Shek Niu Road, Shui Ge Economic Development Zone, Lishui, Zhejiang Applicant before: Zhejiang Wei Kente Pump Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A High Precision High Pressure Three Screw Pump Bushing and Its Manufacturing Process Effective date of registration: 20221129 Granted publication date: 20180629 Pledgee: CITIC Bank Limited by Share Ltd. Lishui branch Pledgor: ZHEJIANG WEIKENTE INTELLIGENT MACHINERY CO.,LTD. Registration number: Y2022330003330 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |