CN103195706A - Gear pump with new structure - Google Patents
Gear pump with new structure Download PDFInfo
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- CN103195706A CN103195706A CN201310132711XA CN201310132711A CN103195706A CN 103195706 A CN103195706 A CN 103195706A CN 201310132711X A CN201310132711X A CN 201310132711XA CN 201310132711 A CN201310132711 A CN 201310132711A CN 103195706 A CN103195706 A CN 103195706A
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Abstract
The invention relates to a gear pump with a new structure. An external thread suction inlet and an external thread outlet are positioned in two outer sides of a pump body, a dynamic sealing disk is arranged between a driving metallurgical gear and a driven alloy gear and a front outer end cover, one end of a cylindrical master spring is fixed at a dynamic disk master convex platform on the back surface of the dynamic sealing disk, the other end of the cylindrical master spring is props against the inner side surface of the front outer end cover in a pressing manner, one end of a cylindrical slave spring is fixed at a dynamic disk slave convex platform on the back surface of the dynamic sealing disk, the other end of the cylindrical slave spring props against the inner side surface of the front outer end cover in a pressing manner, a dynamic disk outer groove is formed in the dynamic disk outer edge of the dynamic sealing disk and provided with an outer sealing ring, the dynamic sealing disk is provided with a dynamic disk master hole and a dynamic disk slave hole, the dynamic disk master hole and the dynamic disk slave hole are respectively provided with a dynamic disk hole groove with the same size, an inner sealing ring is arranged in each dynamic disk hole groove, a static sealing disk is arranged between the driving metallurgical gear and the driven alloy gear and a rear outer end cover, two different alloy materials are adopted for the driving metallurgical gear and the driven alloy gear, and both the dynamic sealing disk and the static sealing disk adopt a composite material formed by a Fe/Al intermetallic compound and Al2O3.
Description
Technical field
The present invention relates to a kind of with mechanical energy be converted to fluid pressure can the transformation of energy rotary volume pump, refer to a kind of new structure gear pump especially.
Background technique
Rotary volume pump has the high advantage of efficient, but all exists its efficient of long-time running wearing and tearing back obviously to reduce, and causes the main cause of above-mentioned defective to be that end face between hyperbaric chamber and the low-pressure cavity is movable and isolates the effect of failing to play effective sealing.The all conditions that is difficult in the engineering find a kind of material can satisfy specific operation has good cost performance simultaneously, and therefore people often adopt the way of various cover coats to solve this problem in the past; The binding ability that just takes full advantage of two or more materials realizes, or realizes replacing the high price material to reduce cost with the lower body material of price by certain surface Hardening Treatment.The too hard fracture easily of material, cross and softly then can't process high-precision surface, the undersized easy heat expansion of end face fit tolerance is stuck firmly, the end face fit tolerance is oversize then can not effectively to be sealed, and long-time running wearing and tearing back sealing effect is poorer, the production line of having to stop is changed pumping unit, causes very big direct or indirect loss.
Summary of the invention
The purpose of this invention is to provide a kind of new structure gear pump, adopted Fe/Al intermetallic compounds and Al
2O
3Form composite material as the end-face friction material.When effectively controlling radial clearance, also possesses end wear compensation isolation technology, to realize being in efficient external series gap state of a control all the time between hyperbaric chamber and the low-pressure cavity, remedy the deficiencies in the prior art, fill up rotary volume pump when effectively controlling radial clearance, also fill up the technological gap of end wear compensate for clearance control.
To achieve these goals, the invention provides following technological scheme:
A kind of new structure gear pump, outside thread suction port and outside thread exhaust port are positioned at the pump housing two outsides; The both ends of the surface of the described pump housing are vertical mutually with two semicircle orifices, outer end cap and back outer end cap before being stamped respectively on the both ends of the surface, and have the end cap screw fastening; Bonnet active axis hole and the driving shaft of the protecgulum of outer end cap active axis hole and back outer end cap are on the same axis before described; The driven axis hole of bonnet and the driven shaft of the driven axis hole of protecgulum of outer end cap and back outer end cap are on the same axis before described; Lead metallurgical gear and driving shaft secure fit outer end cap and described afterwards between the outer end cap before described; The outer end cap and described afterwards between the outer end cap before described from alloy gear and driven shaft secure fit; The metallurgical gear of described master and describedly be meshing with each other from the alloy gear, as improvement: the metallurgical gear of described master and described from the alloy gear and described before the motive sealing dish is arranged between the outer end cap, an end of cylinder main spring is being fixed at the Moving plate master boss place at the motive sealing dish back side, the inboard face of outer end cap before the other end of cylinder main spring is pressed against; The Moving plate at the motive sealing dish back side is being fixed cylinder from an end of spring from boss, and cylinder is pressed against the inboard face of preceding outer end cap from the other end of spring; Have the Moving plate water jacket adorning an outer seal ring on the Moving plate outer rim of described motive sealing dish, described motive sealing dish has Moving plate main aperture and Moving plate from the hole, and described Moving plate main aperture and Moving plate have measure-alike Moving plate hole slot adorning an inner seal ring respectively from the hole; The metallurgical gear of described master and describedly between alloy gear and described back outer end cap, the static seal dish is arranged, there is quiet dish water jacket adorning an outer seal ring on the quiet dish outer rim of described static seal dish, described static seal dish has quiet dish main aperture and quiet dish from the hole, and described quiet dish main aperture and quiet dish have measure-alike quiet dish hole slot adorning an inner seal ring respectively from the hole; And the metallurgical gear of described master is ferrous alloy, and the batching of this ferrous alloy forms by weight percentage that (wt%) is: sintered-aluminium power 22～24, nickel-molybdenum alloy powder 9.5～9.7, cobalt base alloy powder 3.3～3.5, silicon carbide 4.2～4.4, oiling agent 2.5～2.7, all the other are fe-based alloy powder; Described is Nb (niobium) microalloy from the alloy gear, and the batching composition of this Nb (niobium) microalloy (wt%) by weight percentage is: NbCl
40.22%～0.24%, plumbago 0.33～0.35%, zine stearate 1.7～1.9%, all the other are iron powder; Described motive sealing dish and static seal dish all adopt Fe/Al intermetallic compounds and Al
2O
3Pottery forms composite material, and each constituent element (wt%) by weight percentage is: Al
2O
384～86%, Fe/Al intermetallic compounds 14～16%; Described Fe/Al intermetallic compounds self weight percentages of components (wt%) is: Al (aluminium) 12.7～12.8, Mo (molybdenum) 0～1.55, Ni (nickel) 0～3.5, W (tungsten) 0～3.7, WC (Tungsten carbite) 0～1.5, and all the other are Fe (iron); Described inner seal ring material is chloroprene rubber composition, the batching of this chloroprene rubber composition is formed by weight percentage, and (wt%) is: neoprene 81～82, acrylate rubber 5～6, benzimidazole age resister 0.9～1.0, nickel dibutyl dithiocarbamate 1.7～1.8, carbodiimides 1.4～1.5, paraffin 1.6～1.7, Active agent 1.5～1.7, stearic acid 0.6～0.7, reinforcing agent 1.1～1.2, plasticizing agent 1.3～1.4, vulcanzing agent 0.3～0.4, all the other are assistant crosslinking agent.
As further improvement: described motive sealing dish have Moving plate main aperture and protecgulum initiatively axis hole and bonnet initiatively axis hole be on the same axis; Described motive sealing dish has Moving plate to be on the same axis from hole and the driven axis hole of protecgulum and the driven axis hole of bonnet; The Moving plate outer rim of described motive sealing dish is slidingly matched with two semicircle orifices.
As further improvement: described Moving plate main aperture and described Moving plate are from there being 50 to 60 millimeters spacing between the hole; Described static seal dish has quiet dish main aperture and protecgulum active axis hole and bonnet active axis hole to be on the same axis; Described static seal dish has quiet dish to be on the same axis from hole and the driven axis hole of protecgulum and the driven axis hole of bonnet; The quiet dish outer rim of described static seal dish is slidingly matched with two semicircle orifices; Described quiet dish main aperture and described quiet dish are from there being 50 to 60 millimeters spacing between the hole.
As further improvement: described driving shaft and protecgulum initiatively axis hole and bonnet initiatively between the axis hole for being slidingly matched; Between the driven axis hole of described driven shaft and protecgulum and the driven axis hole of bonnet for being slidingly matched.
As further improvement: described Moving plate main aperture and driving shaft Spielpassung; Described Moving plate is from hole and driven shaft Spielpassung; Described quiet dish main aperture and driving shaft Spielpassung; Described quiet dish is from hole and driven shaft Spielpassung.
The invention has the beneficial effects as follows:
1, be pressed against respectively from the other end of spring by means of the other end of cylinder main spring and cylinder before the common axial rebounding force that produces of inboard face of outer end cap, make the horizontal frontal plane of end-face compensate dish be close to the master alloying gear and from a side plane of alloy gear, force the master alloying gear and be close to the inner side plane of static seal dish from the opposite side Transverse plane of alloy gear, constitute axial end wear compensation gap control technology, guarantee that gear pump is in high-efficiency operation all the time.
2, molecule adsorbs mutually between the similar material in order to avoid, main metallurgical gear and from the engaging friction coefficient between the alloy gear, adopt two kinds of different alloy materials of ferrous alloy and Nb (niobium) microalloy respectively, coefficient motive sealing dish and static seal dish have all adopted Fe/Al intermetallic compounds and Al in order to reduce friction better
2O
3Form composite material.The Fe/Al intermetallic compounds is synthetic in advance by high-energy ball milling machinery alloyage, also can obtain in conjunction with the heat treatment process under the atmosphere protection by mechanical alloying, and all conditions that can satisfy specific operation also has good cost performance simultaneously.
3, composite material of the present invention can adopt cold pressing isostatic compaction and non-pressure sintering technology.Because the present invention directly adopts synthetic in advance Fe/Al intermetallic compounds and Al
2O
3Ceramic Composite, thus the composite materials of two big series can be formed, that is: AlzO, basic Fe/Al intermetallic compound composite material and Fe/Al intermetallic compound base Al
2O
3Ceramic composite.The former utilizes the Fe/Al intermetallic compounds to improve Al
2O
3The toughness of stupalith, The latter Al
2O
3Stupalith improves hardness, the high temperature resistant and oxidation resistance of Fe/Al intermetallic compounds.
4, the material of outer seal ring and inner seal ring is identical, all adopts high temperature resistant aging-resistant chloroprene rubber composition, guarantees that static sealing and dynamic seal (packing) all can not reveal.
5, the made motive sealing dish of the present invention and the main performance of static seal dish can reach: resistance to flexure is between 840～860MPa, and surface hardness is between HRA86～88.After fine finishing, the inner side plane of the horizontal frontal plane of motive sealing dish and static seal dish through precision grinding rear surface roughness between 0.0005 to 0.0006 millimeter, realize super minute surface roughness combination impact resistance well, guarantee the no wear-out failure of operation steady in a long-term.
Description of drawings
Fig. 1 is the whole sectional drawing by two main axiss of the present invention.
Fig. 2 is the back side stereogram of the motive sealing dish 40 among Fig. 1.
Fig. 3 is the P～P sectional view among Fig. 1.
Fig. 4 is the sectional view in Q among Fig. 1～Q cross section.
Fig. 5 is the stereogram of the static seal dish 50 among Fig. 1.
Fig. 6 is R among Fig. 4～R echelon sectional view.
Embodiment
In conjunction with the accompanying drawings and embodiments, further structure of the present invention and working principle are elaborated:
In Fig. 1, Fig. 3, Fig. 4 and Fig. 6, a kind of new structure gear pump, outside thread suction port 86 and outside thread exhaust port 84 are positioned at 80 liang of outsides of the pump housing; The both ends of the surface of the described pump housing 80 are vertical mutually with pair semicircle orifice 85, outer end cap 60 and back outer end cap 90 before being stamped respectively on the both ends of the surface, and have end cap screw 70 fastening; The bonnet active axis hole 91 of the protecgulum of outer end cap 60 active axis hole 61 and back outer end cap 90 is on the same axis with driving shaft 11 before described; The driven axis hole 92 of bonnet of the driven axis hole 62 of the protecgulum of outer end cap 60 and back outer end cap 90 is on the same axis with driven shaft 12 before described; Lead metallurgical gear 45 and driving shaft 11 secure fit outer end cap 60 and described afterwards between the outer end cap 90 before described; The outer end cap 60 and described afterwards between the outer end cap 90 before described from alloy gear 54 and driven shaft 12 secure fit; The metallurgical gear 45 of described master is meshing with each other from alloy gear 54 with described, as improvement: the metallurgical gear 45 of described master and described from alloy gear 54 and described before motive sealing dish 40 is arranged between the outer end cap 60, an end of cylinder main spring 31 is being fixed at Moving plate master boss 49 places at motive sealing dish 40 back sides, the inboard face of outer end cap 60 before the other end of cylinder main spring 31 is pressed against; The Moving plate at motive sealing dish 40 back sides is being fixed cylinder from an end of spring 32 from boss 46, and cylinder is pressed against the inboard face of preceding outer end cap 60 from the other end of spring 32; There is Moving plate water jacket 47 adorning an outer seal ring 78 on the Moving plate outer rim 48 of described motive sealing dish 40, described motive sealing dish 40 has Moving plate main aperture 41 and Moving plate from the hole 42, and described Moving plate main aperture 41 and Moving plate have measure-alike Moving plate hole slot 44 adorning an inner seal ring 74 respectively from hole 42; The metallurgical gear 45 of described master and describedly between alloy gear 54 and described back outer end cap 90, static seal dish 50 is arranged, there is quiet dish water jacket 57 adorning an outer seal ring 78 on the quiet dish outer rim 58 of described static seal dish 50, described static seal dish 50 has quiet dish main aperture 51 and quiet dish from the hole 52, and described quiet dish main aperture 51 and quiet dish have measure-alike quiet dish hole slot 55 adorning an inner seal ring 74 respectively from hole 52; And the metallurgical gear 45 of described master is ferrous alloy, and the batching of this ferrous alloy forms by weight percentage that (wt%) is: sintered-aluminium power 22～24, nickel-molybdenum alloy powder 9.5～9.7, cobalt base alloy powder 3.3～3.5, silicon carbide 4.2～4.4, oiling agent 2.5～2.7, all the other are fe-based alloy powder; Described is Nb (niobium) microalloy from alloy gear 54, and the batching composition of this Nb (niobium) microalloy (wt%) by weight percentage is: NbCl
40.22%～0.24%, plumbago 0.33～0.35%, zine stearate 1.7～1.9%, all the other are iron powder; Described motive sealing dish 40 and static seal dish 50 all adopt Fe/Al intermetallic compounds and Al
2O
3Pottery forms composite material, and each constituent element (wt%) by weight percentage is: Al
2O
384～86%, Fe/Al intermetallic compounds 14～16%; Described Fe/Al intermetallic compounds self weight percentages of components (wt%) is: Al (aluminium) 12.7～12.8, Mo (molybdenum) 0～1.55, Ni (nickel) 0～3.5, W (tungsten) 0～3.7, WC (Tungsten carbite) 0～1.5, and all the other are Fe (iron); Described inner seal ring material is chloroprene rubber composition, the batching of this chloroprene rubber composition is formed by weight percentage, and (wt%) is: neoprene 81～82, acrylate rubber 5～6, benzimidazole age resister 0.9～1.0, nickel dibutyl dithiocarbamate 1.7～1.8, carbodiimides 1.4～1.5, paraffin 1.6～1.7, Active agent 1.5～1.7, stearic acid 0.6～0.7, reinforcing agent 1.1～1.2, plasticizing agent 1.3～1.4, vulcanzing agent 0.3～0.4, all the other are assistant crosslinking agent.
As further improvement: described motive sealing dish 40 have Moving plate main aperture 41 and protecgulum initiatively axis hole 61 and bonnet initiatively axis hole 91 be on the same axis; Described motive sealing dish 40 has Moving plate 42 to be on the same axis with the driven axis hole 62 of protecgulum and the driven axis hole 92 of bonnet from the hole; The Moving plate outer rim 48 of described motive sealing dish 40 is slidingly matched with two semicircle orifices 85.
As further improvement: described Moving plate main aperture 41 and described Moving plate are from there being 50 to 60 millimeters spacing between the hole 42; Described static seal dish 50 has quiet dish main aperture 51 and protecgulum active axis hole 61 and bonnet active axis hole 91 to be on the same axis; Described static seal dish 50 has quiet dish 52 to be on the same axis with the driven axis hole 62 of protecgulum and the driven axis hole 92 of bonnet from the hole; The quiet dish outer rim 58 of described static seal dish 50 is slidingly matched with two semicircle orifices 85; Described quiet dish main aperture 51 and described quiet dish are from there being 50 to 60 millimeters spacing between the hole 52.
As further improvement: described driving shaft 11 and protecgulum initiatively axis hole 61 and bonnet initiatively between the axis hole 91 for being slidingly matched; Between the driven axis hole 62 of described driven shaft 12 and protecgulum and the driven axis hole 92 of bonnet for being slidingly matched.
As further improvement: described Moving plate main aperture 41 and driving shaft 11 Spielpassung; Described Moving plate from the hole 42 with driven shaft 12 Spielpassung; Described quiet dish main aperture 51 and driving shaft 11 Spielpassung; Described quiet dish from the hole 52 with driven shaft 12 Spielpassung.
In Fig. 2, Fig. 5, outstanding feature of the present invention is main metallurgical gear the alloy material different with adopt two kinds of ferrous alloy and Nb niobium micro-alloys respectively from the alloy gear meshes effect with improvement.Motive sealing dish and static seal dish have all adopted Fe/Al intermetallic compounds and Al
2O
3Form composite material as rubbing surface.The Fe/Al intermetallic compounds is synthetic in advance by high-energy ball milling machinery alloyage, the coefficient of can better reducing friction.
Provide a most preferred embodiment of the present invention below:
The batching of the ferrous alloy of main metallurgical gear 45 is formed by weight percentage, and (wt%) is: sintered-aluminium power 23, nickel-molybdenum alloy powder 9.6, cobalt base alloy powder 3.34, silicon carbide 4.3, oiling agent 2.6, all the other are fe-based alloy powder.
Be Nb (niobium) microalloy from alloy gear 54, the batching of this Nb (niobium) microalloy forms by weight percentage that (wt%) is: NbCl
40.23%, plumbago 0.34%, zine stearate 1.8%, all the other are iron powder.
Fe～Al base-material 15%, Al
2O
3Aluminum oxide fine powder 85%; At first in the accurate weighing of ratio of Fe～Al base-material, use high speed ball mill ball milling 20 hours, obtain Fe～Al intermetallic compound base material; Ratio batching in composite material added the anhydrous alcohol ball milling 2 hours, and slurry is dry, powder process in vacuum drying oven; Powder is packed in the black lead mould, and sintering in the gas-protecting sintering stove, shielding gas are H
2, 1360 ℃ of firing temperatures, pressure 30MPa, heat-insulation pressure keeping 15 minutes makes alumina base Fe～Al intermetallic compounds ceramic composite.
Gained alumina base Fe～Al intermetallic compounds ceramic composite is after fine finishing, the inner side plane of the horizontal frontal plane of motive sealing dish and static seal dish through precision grinding rear surface roughness between 0.0002 to 0.0004 millimeter, realize super minute surface, guarantee the no wear-out failure of operation steady in a long-term.
Installation steps are as follows:
In Fig. 1, it is 17 numbers of teeth that embodiment selects main metallurgical gear 45, also is 17 numbers of teeth from alloy gear 54.End cap screw 70 numbers of each side of the pump housing 80 are 6.Side end face at the pump housing 80 places gasket seal, with 6 end cap screws 70 back outer end cap 90 is fixed on the side end face of the pump housing 80.In the groove of bonnet active axis hole 91, put into driving shaft seal ring 21; In the groove of the driven axis hole 92 of bonnet, put into driven shaft seal ring 22.On motive sealing dish 40 and static seal dish 50, install outer seal ring 78 and inner seal ring 74 in advance.In the groove of protecgulum active axis hole 61 and in the groove of the driven axis hole 62 of protecgulum, put into driving shaft seal ring 21 and driven shaft seal ring 22 respectively.
Opposite side end face at the pump housing 80 places gasket seal, preceding outer end cap 60 is fixed on the opposite side end face of the pump housing 80 with 6 end cap screws 70, make the axle front end of driving shaft 11 pass through initiatively axis hole 61 of protecgulum, driving shaft keyway 17 is in outside the preceding outer end cap 60; The axle front end of driven shaft 12 passed through the driven axis hole 62 of protecgulum.
As follows during the work operation:
In Fig. 5 and Fig. 6, external force is by 17 inputs of driving shaft keyway, by metallurgical gear 45 rotations of driving shaft 11 related masters, by master and slave alloy gear engagement, order about from 54 opposite spins of alloy gear main metallurgical gear 45 cylindricals and all be slidingly matched with two semicircle orifices 85 from alloy gear 54 cylindricals.
Lead metallurgical gear 45 and pass through adjacent two tooth working spaces when rotated from alloy gear 54, constantly bring liquid working media into adjacent two tooth working spaces from outside thread suction port 86, after the rotation semi-circumference, squeeze outside thread exhaust port 84, go round and begin again.
An end of cylinder main spring 31 is being fixed at Moving plate master boss 49 places, the inboard face of outer end cap 60 before the other end of cylinder main spring 31 is pressed against; Moving plate is being fixed cylinder from an end of spring 32 from boss 46, and cylinder is pressed against the inboard face of preceding outer end cap 60 from the other end of spring 32.The common axial rebounding force that produces of inboard face of outer end cap 60 before being pressed against respectively from the spoke of spring 32 by means of the spoke of cylinder main spring 31 and cylinder, make the horizontal frontal plane of composite material compensating disc 40 be close to main metallurgical gear 45 and from a side plane of alloy gear 54, force the inner side plane of leading metallurgical gear 45 and being close to static seal dish 50 from the opposite side Transverse plane of alloy gear 54, constitute axial end wear compensation gap control technology, Fe/Al intermetallic compounds and Al
2O
3Form all conditions that composite material friction ferrous alloy and Nb niobium micro-alloy can satisfy specific operation, guarantee that gear pump is in efficient sealed situation operation all the time.
Claims (5)
1. new structure gear pump, outside thread suction port (86) and outside thread exhaust port (84) are positioned at the pump housing (80) two outsides; The both ends of the surface of the described pump housing (80) are vertical mutually with two semicircle orifices (85), are stamped preceding outer end cap (60) and back outer end cap (90) on the both ends of the surface respectively, and have end cap screw (70) fastening; The bonnet active axis hole (91) of the protecgulum of outer end cap (60) active axis hole (61) and back outer end cap (90) is on the same axis with driving shaft (11) before described; The driven axis hole of bonnet (92) of the driven axis hole of protecgulum (62) of outer end cap (60) and back outer end cap (90) is on the same axis with driven shaft (12) before described; Main metallurgical gear (45) and driving shaft (11) secure fit are positioned between described preceding outer end cap (60) and the described back outer end cap (90); Be positioned between described preceding outer end cap (60) and the described back outer end cap (90) from alloy gear (54) and driven shaft (12) secure fit; The metallurgical gear of described master (45) is meshing with each other from alloy gear (54) with described, it is characterized in that: the metallurgical gear of described master (45) and described from alloy gear (54) and described before motive sealing dish (40) is arranged between the outer end cap (60), the Moving plate master boss (49) at motive sealing dish (40) back side locates fixing an end of cylinder main spring (31), and the other end of cylinder main spring (31) is pressed against the inboard face of preceding outer end cap (60); The Moving plate at motive sealing dish (40) back side is being fixed cylinder from an end of spring (32) from boss (46), and cylinder is pressed against the inboard face of preceding outer end cap (60) from the other end of spring (32); There is Moving plate water jacket (47) adorning an outer seal ring (78) on the Moving plate outer rim (48) of described motive sealing dish (40), described motive sealing dish (40) has Moving plate main aperture (41) and Moving plate from the hole (42), and described Moving plate main aperture (41) and Moving plate have measure-alike Moving plate hole slot (44) adorning an inner seal ring (74) respectively on hole (42); The metallurgical gear of described master (45) and describedly between alloy gear (54) and described back outer end cap (90), static seal dish (50) is arranged, there is quiet dish water jacket (57) adorning an outer seal ring (78) on the quiet dish outer rim (58) of described static seal dish (50), described static seal dish (50) has quiet dish main aperture (51) and quiet dish from the hole (52), and described quiet dish main aperture (51) and quiet dish have measure-alike quiet dish hole slot (55) adorning an inner seal ring (74) respectively on hole (52); And the metallurgical gear of described master (45) is ferrous alloy, and the batching of this ferrous alloy forms by weight percentage that (wt%) is: sintered-aluminium power 22～24, nickel-molybdenum alloy powder 9.5～9.7, cobalt base alloy powder 3.3～3.5, silicon carbide 4.2～4.4, oiling agent 2.5～2.7, all the other are fe-based alloy powder; Described is Nb (niobium) microalloy from alloy gear (54), and the batching composition of this Nb (niobium) microalloy (wt%) by weight percentage is: NbCl
40.22%～0.24%, plumbago 0.33～0.35%, zine stearate 1.7～1.9%, all the other are iron powder; Described motive sealing dish (40) and static seal dish (50) all adopt Fe/Al intermetallic compounds and Al
2O
3Pottery forms composite material, and each constituent element (wt%) by weight percentage is: Al
2O
384～86%, Fe/Al intermetallic compounds 14～16%; Described Fe/Al intermetallic compounds self weight percentages of components (wt%) is: Al (aluminium) 12.7～12.8, Mo (molybdenum) 0～1.55, Ni (nickel) 0～3.5, W (tungsten) 0～3.7, WC (Tungsten carbite) 0～1.5, and all the other are Fe (iron); Described inner seal ring (74) material is chloroprene rubber composition, the batching of this chloroprene rubber composition is formed by weight percentage, and (wt%) is: neoprene 81～82, acrylate rubber 5～6, benzimidazole age resister 0.9～1.0, nickel dibutyl dithiocarbamate 1.7～1.8, carbodiimides 1.4～1.5, paraffin 1.6～1.7, Active agent 1.5～1.7, stearic acid 0.6～0.7, reinforcing agent 1.1～1.2, plasticizing agent 1.3～1.4, vulcanzing agent 0.3～0.4, all the other are assistant crosslinking agent.
2. a kind of new structure gear pump according to claim 1 is characterized in that: described motive sealing dish (40) have Moving plate main aperture (41) and protecgulum initiatively axis hole (61) and bonnet initiatively axis hole (91) be on the same axis; Described motive sealing dish (40) has Moving plate to be on the same axis from hole (42) and the driven axis hole of protecgulum (62) and the driven axis hole of bonnet (92); The Moving plate outer rim (48) of described motive sealing dish (40) is slidingly matched with two semicircle orifices (85).
3. a kind of new structure gear pump according to claim 1, it is characterized in that: described Moving plate main aperture (41) and described Moving plate have 50 to 60 millimeters spacing between hole (42); Described static seal dish (50) has quiet dish main aperture (51) and protecgulum active axis hole (61) and bonnet active axis hole (91) to be on the same axis; Described static seal dish (50) has quiet dish to be on the same axis from hole (52) and the driven axis hole of protecgulum (62) and the driven axis hole of bonnet (92); The quiet dish outer rim (58) of described static seal dish (50) is slidingly matched with two semicircle orifices (85); Described quiet dish main aperture (51) and described quiet dish have 50 to 60 millimeters spacing between hole (52).
4. a kind of new structure gear pump according to claim 1 is characterized in that: described driving shaft (11) and protecgulum initiatively axis hole (61) and bonnet initiatively between the axis hole (91) for being slidingly matched; Between described driven shaft (12) and the driven axis hole of protecgulum (62) and the driven axis hole of bonnet (92) for being slidingly matched.
5. a kind of new structure gear pump according to claim 1 is characterized in that: described Moving plate main aperture (41) and driving shaft (11) Spielpassung; Described Moving plate is (42) and driven shaft (12) Spielpassung from the hole; Described quiet dish main aperture (51) and driving shaft (11) Spielpassung; Described quiet dish is (52) and driven shaft (12) Spielpassung from the hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310132711XA CN103195706A (en) | 2013-03-28 | 2013-03-28 | Gear pump with new structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310132711XA CN103195706A (en) | 2013-03-28 | 2013-03-28 | Gear pump with new structure |
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|---|---|
| CN103195706A true CN103195706A (en) | 2013-07-10 |
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| CN201310132711XA Pending CN103195706A (en) | 2013-03-28 | 2013-03-28 | Gear pump with new structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202370840U (en) * | 2011-12-23 | 2012-08-08 | 张意立 | Internal pressure channel compensated gear pump |
| CN202370832U (en) * | 2011-12-06 | 2012-08-08 | 张意立 | Internal pressure channel compensated inner and outer gear pump |
| CN102927003A (en) * | 2012-12-06 | 2013-02-13 | 张意立 | Special gear pump |
| CN102927000A (en) * | 2012-12-06 | 2013-02-13 | 张意立 | Self-sealing gear pump |
| CN102935514A (en) * | 2012-10-25 | 2013-02-20 | 无锡中彩新材料股份有限公司 | Powder metallurgical gear and forming method thereof |
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2013
- 2013-03-28 CN CN201310132711XA patent/CN103195706A/en active Pending
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| CN102321282A (en) * | 2011-08-18 | 2012-01-18 | 上海众力汽车部件有限公司 | Oil-resistant high-temperature compression fatigue-resistant chloroprene rubber composition |
| CN202370832U (en) * | 2011-12-06 | 2012-08-08 | 张意立 | Internal pressure channel compensated inner and outer gear pump |
| CN202370840U (en) * | 2011-12-23 | 2012-08-08 | 张意立 | Internal pressure channel compensated gear pump |
| CN102935514A (en) * | 2012-10-25 | 2013-02-20 | 无锡中彩新材料股份有限公司 | Powder metallurgical gear and forming method thereof |
| CN102927003A (en) * | 2012-12-06 | 2013-02-13 | 张意立 | Special gear pump |
| CN102927000A (en) * | 2012-12-06 | 2013-02-13 | 张意立 | Self-sealing gear pump |
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Application publication date: 20130710 |