CN2348150Y - Internal engagement gear pulp pump - Google Patents
Internal engagement gear pulp pump Download PDFInfo
- Publication number
- CN2348150Y CN2348150Y CN 98219929 CN98219929U CN2348150Y CN 2348150 Y CN2348150 Y CN 2348150Y CN 98219929 CN98219929 CN 98219929 CN 98219929 U CN98219929 U CN 98219929U CN 2348150 Y CN2348150 Y CN 2348150Y
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- gear
- internal gear
- pump
- internal
- main shaft
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Abstract
The utility model relates to an internal engagement gear pulp pump, comprising a pump body, a crescent pump cover, an internal gear, a pinion gear, a main shaft, and a bearing seat, wherein, the gear ratio of the internal gear and the pinion gear is 9: 7; the tooth profile of the internal gear is a curve tooth profile with partial convex circular arc, the tooth profile of the pinion gear is a curve tooth profile that partial concave circular arc are touched with a convex circular arc on a tooth top angle, and the internal gear and the pinion gear form a two-tooth differential gear mechanism; the gears are integrally cast with the main shaft by copper alloy; the outer circumference surface of the internal gear is in clearance fit with the perisporium of the internal cavity of the pump body, the tooth surface of the internal gear is in clearance fit with the internal surface of the crescent pump cover, and the bottom surface of a tooth disk of the internal gear is in clearance fit with the front end surface of the bearing seat. The utility model has the advantages of compact structure, stable rotation, strong suction force, high delivery pressure, low noise long life time, convenient maintenance, etc.
Description
The utility model relates to a kind of crescent gear pump, refers to that especially a kind of being suitable for aspirate and pressure-feed inside engaged gear stock pump the mill base or the slurries of different viscosities.
In printing and dyeing and chemical industry, can use slurries suction and the pressure-feed important means of crescent gear pump widely as various viscosity, for example for various circular screen printers supply with mill bases, for being in harmonious proportion modulation slurry and glue is provided or does not have particulate slurry etc. for the chemical industry preparation, can satisfy the existing needs of producing, but, the crescent gear pump of prior art is because of structural relation, consequently also existence suction and pressure are carried defectives such as the slurries ability is little, quick abrasion, easily leakage, life-span weak point, can not satisfy the needs in the production.
China's utility model patent bulletin disclosed " a kind of inside engaged gear rotary pump " of utility model patent CN2229555Y on June 15th, 1996.It is poor that the internal gear that this inside engaged gear rotary pump will be wherein and the gear ratio of small gear are designed to three teeth, as 10: 7,11: 8 etc., interior root footpath and reel external diameter are slidingly matched at pump housing inner chamber, internal gear and pump housing inner chamber can produce sliding friction and cause wearing and tearing during running, particularly difficulty is repaired in pump housing inner chamber wearing and tearing back, reduces working life; Internal gear and crescent moon pump cover end face produce sliding friction and cause wearing and tearing when pump turns round, in use need adjust the end clearance; Do not have machinery and seal, easily generation is leaked, because feed inlet and outlet is 90 ° of intersections, when the pump housing was higher than by suction slurry water plane, suction was less, so general suitable pressure of doing of this pump is carried; Because pump housing inner chamber and internal gear cylindrical, internal gear end face and crescent moon pump cover produce sliding friction in the running, as run up this position wearing and tearing are accelerated, so the general middle driven at low speed that only suits.
The purpose of this utility model is to overcome above shortcoming and a kind of crescent gear pump suction and pressure conveying slurries ability, the pump housing is not easy to wear, rational in infrastructure, usability is good inside engaged gear stock pump of improving is provided.
For reaching above purpose, inside engaged gear stock pump of the present utility model comprises the pump housing, crescent moon pump cover, internal gear, small gear, main shaft, bearing support, feeding and discharging joint, wherein, the gear ratio of internal gear and small gear is 9: 7, internal gear tooth is a part dome arc curvilinear tooth profile, and the small gear flank profil is the flank profil of part concave circular arc and the tangent curve of addendum angle dome arc.
Gear stock pump as previously discussed, wherein, described main shaft is made by stainless steel, and described internal gear is that Cuprum alloy is made, and described main shaft fuses with the internal gear fluted disc by the conjuncted casting of internal gear.
Gear stock pump as previously discussed, wherein, described small gear is formed through molding sintering by the filler teflon.
Gear stock pump as previously discussed, wherein, internal gear outer circumferential face and pump housing inner chamber perisporium, internal gear end face and crescent moon pump cover inner plane and internal gear teeth are tried to get to the heart of a matter, and the part front-end face all keeps Spielpassung at the bottom of face and the pump.
Gear stock pump as previously discussed, wherein, described main shaft is erected in the bearing support by a pair of radial ball bearing.
Gear stock pump as previously discussed, wherein, described main shaft and internal gear form by stainless steel is conjuncted.
Gear stock pump as previously discussed, wherein, and the fluted disc of internal gear is provided with two breach, described mechanical seal device is installed on the outside framework oil seal and the main shaft between its front-end face at the bottom of the pump, it comprises a stationary ring lining, a stationary ring, a rotating ring, a tower spring, a moving ring sleeve, a bearing support and a bearing ring, wherein, the stationary ring lining is fixed in the inwall of part at the bottom of the pump, and stationary ring and main shaft maintain the space; Bearing ring is the coil of band bipod, and with compress and fixedly rotating ring and moving ring sleeve mode be installed in the rotating ring, its bipod is inserted in two breach of internal gear fluted disc; Bearing support is a ring stand, is placed on the moving ring sleeve shoulder lattice; And in bearing ring, adorn a tower spring, and by the tower spring bearing support and bearing ring are strutted, keep certain pressure between the two and make, and the internal surface of moving ring sleeve is contacted with the intimate of main shaft, make the slurries in the pump housing when pump operation or running, not make leakage.
Because this inside engaged gear stock pump adopts the two teeth difference gear mechanism, the small gear of the internal gear of the dome curved tooth face of 9 teeth and the concave circular arc flank of tooth of 7 teeth, main shaft is with the conjuncted casting of Cuprum alloy internal gear, and try to get to the heart of a matter face and pump housing bottom of internal gear fluted disc and pump housing inner chamber chamber wall, internal gear end face and crescent moon pump cover plane, internal gear teeth all adopts the clearance form, have that volume is little, compact structure, wearing and tearing are little, running is stable and, can make gear stock pump high working efficiency, suction force is strong, discharge pressure is high, noise is little, long service life and advantage such as easy to maintenance.
Fig. 1 is that the part master of the horizontal stock pump of the utility model first embodiment looks sectional view;
Fig. 2 is the sectional view that A-A did along figure;
Fig. 3 is the sectional view of the amplification of low short type mechanical seal structure among Fig. 2;
Fig. 4 is that the part master of the utility model second embodiment one vertical stock pump looks sectional view;
Fig. 5 is the plan view of Fig. 4.
See also shown in Fig. 1 and 2, inside engaged gear stock pump of the present utility model comprises a pump housing 1, a charging joint 2, part 10 at the bottom of one discharging joint 3, an internal gear 5, a small gear 6, a crescent moon pump cover 7, a main shaft 8, a bearing support 9, the pump, a cover plate 11, wherein, the pump housing 1 comprises that the top of inner chamber body 12, these inner chamber body two sides of cylindrical cavity in the middle of being positioned at is provided with two and advances slurry and grout outlet 14 towards what direction perpendicular to the ground was extended bendingly from inner chamber body respectively, and their top is a feed inlet and outlet 13.The pump housing 1 is cast with stainless steel in the utility model.
Charging joint 2 and discharging joint 3 can be straighttube-type or bent-tube boiler, need to decide on structure for conveying or position.General charging joint 2 and discharging joint 3 can be installed on the pulp-inlet pipe and grout outlet 14 end faces of the pump housing 1 separately by screw, and groove is set on charging joint 2 and discharging joint 3 usually, and O type circle 4 is placed in this groove.Therefore, because of the feed inlet and outlet 13 of the pump housing is opened in the higher position of inner chamber, always there are slurries in the pump chamber and make, described charging joint and discharging joint are provided with sealing O shape circle and are installed to hermetically separately on the pump housing turnover slurry pipe 14 with screw.So, meshing gear stock pump is after starting in this, and its suction force can reach-0.095 megapoise, so help using in needing the workplace of Fraquent start.
Crescent moon pump cover 7 is plectanes made from stainless steel material, and it contains an offset hole, and an outwards outstanding crescent moon body is set on the offset hole lower, planar.Crescent moon pump cover 7 is installed in the inner chamber of inner chamber body 12 and is positioned at before the internal gear 5, its crescent moon body generally is positioned at the pump housing 1 inner underside, described small gear 6 pivotally is loaded on the little axle 15 of crescent moon pump cover 7 offset holes, will be arranged in pump housing inner chamber body 12 inner chambers simultaneously with suspending and is meshed with internal gear 5 tooth portions more than the crescent moon pump cover crescent moon body.
Part 10 its profiles and bearing support 9 and the pump housing 1 match at the bottom of the pump, and its anterior outer wall is provided with the mounting flange 30 of a ring-type, and side is provided with an extension forward wall 31 before the mounting flange, and its rear portion is provided with an annular groove and is provided with a projecting ring section 33 on outer wall at inwall.Part 10 can be connected with inner chamber body 12 rear walls of the pump housing 1 by mounting flange 30 usefulness screws 35 at the bottom of the pump, its extension forward wall 31 then is inserted in the inner chamber of inner chamber body 12, and the front-end face 32 of part keeps certain clearance to cooperate with internal gear 5 fluted disc rear surfaces at the bottom of the port plane of extension forward wall 31 or the pump; Can be connected with the front portion of bearing support 9 by projecting ring section 33, and at the bottom of making pump part 10 between the pump housing 1 and bearing support 9.On the other hand, described main shaft 8 can be supported by the radial ball bearing 21,22 that is installed in the bearing chamber in bearing support 9, makes gear 5 outer circumferential faces keep certain clearance to cooperate with the inner peripheral surface of pump housing inner chamber body 12 simultaneously.
From as seen with the Spielpassung of the inner peripheral surface of the outer circumferential face of the fluted disc rear surface of the port plane 32 of upper bearing bracket extension forward wall 31 and internal gear 5, internal gear and pump housing inner chamber body 12 and the crescent moon cover plate 7 and the internal gear flank of tooth, because of these Spielpassung are based upon main shaft 8 by radial ball bearing 21,22 rotations of supporting, all can be controlled on radial and axial beating with the main shaft 8 whole internal gears 5 that constitute, so can not produce wearing and tearing each other, working stability also can increase working life.
In addition, this inside engaged gear stock pump also comprises an outside framework oil seal 23, a mechanical seal device 24 and a round nut 25, and wherein outside framework oil seal 23 is installed in the annular groove of part 10 at the bottom of the pump.
Mechanical seal device 24, this device is installed on the outside framework oil seal 23 and the main shaft 8 between its front-end face 32 of part 10 at the bottom of the pump, it comprises a stationary ring lining 34, a stationary ring 35, a rotating ring 36, a tower spring 37, a moving ring sleeve 38, a bearing support 39 and a bearing ring 40 (as shown in Figure 3), wherein, stationary ring lining 34 is fixed at the bottom of the pump in the part 10; Stationary ring 35 is fixed in the stationary ring lining 34 and with the main shaft 8 that passes this stationary ring 35 and keeps a fixed gap; Rotating ring 36 and moving ring sleeve 38 offset with an inside and outside wall and install and by being installed in the tower spring 37 at moving ring sleeve 38 rears, bearing support 39 and bearing ring 40 and make rotating ring 36 1 sides be resisted against on the side surface of stationary ring 35 and make to keep certain pressure between the two, wherein, bearing ring 40 is the coil of band bipod 41, be installed in 37 of moving ring sleeve 38 and tower springs, its bipod 41 is inserted in two breach 16 of internal gear fluted disc, bearing support 39 is that a ring packs tightly outside moving ring sleeve 38, and the internal surface of moving ring sleeve 38 is contacted with the intimate of main shaft 8, the internal surface of moving ring sleeve 38 contacts with the outer surface of main shaft 8, can make the slurries in the pump housing 1 not make leakage when pump operation or running.
See also shown in the Figure 4 and 5, in this second embodiment, the inside engaged gear stock pump is a vertical pump, the basic building block that this vertical pump is contained, and internal structure and first embodiment's horizontal pump is the same, just at the pump housing 41, main shaft 48, advance slurry and pulp joint 44,45, pad 42 is different, for example main shaft 48 is perpendicular to ground, pad 42 is installed between the pump housing 41 and the turnover slurry joint 44 and 45.But, should be noted that the turnover slurry joint of the pump housing is imported and exported at the pump housing about 41 and is higher than inner chamber, has slurries to guarantee inner chamber.In addition, because the vertical pump rotating speed is lower than horizontal pump,, equate with horizontal pump to guarantee flow so the crescent moon portion axial dimension of inner chamber body, internal gear teeth portion, small gear, crescent moon pump cover extends pro rata.
Claims (9)
1. inside engaged gear stock pump, comprise part at the bottom of the pump housing, feeding and discharging joint, crescent moon pump cover, internal gear, small gear, main shaft, bearing support, the pump, it is characterized in that, the gear ratio of internal gear and small gear is 9: 7, internal gear tooth is a part dome arc curvilinear tooth profile, and the small gear flank profil is the flank profil of part concave circular arc and the tangent curve of addendum angle dome arc.
2. gear stock pump according to claim 1 is characterized in that described main shaft is made by stainless steel, and described internal gear is that Cuprum alloy is made, and described main shaft fuses with the internal gear fluted disc by the conjuncted casting of internal gear.
3. gear stock pump according to claim 1 is characterized in that described small gear is formed through molding sintering by the filler teflon.
4. gear stock pump according to claim 1 is characterized in that, try to get to the heart of a matter face and bearing support front-end face of internal gear outer circumferential face and pump housing inner chamber perisporium, the internal gear flank of tooth and crescent moon pump cover internal surface and internal gear teeth all keeps Spielpassung.
5. gear stock pump according to claim 1 is characterized in that described main shaft is erected in the bearing support by a pair of radial ball bearing.
6. gear stock pump according to claim 1 is characterized in that, described main shaft and internal gear form by stainless steel is conjuncted.
7. gear stock pump according to claim 1, it is characterized in that, the fluted disc of described internal gear is provided with two breach, described mechanical seal device is installed on the outside framework oil seal and the main shaft between its front-end face of part at the bottom of the pump, it comprises a stationary ring lining, a stationary ring, a rotating ring, a tower spring, a moving ring sleeve, a bearing support and a bearing ring, wherein, the stationary ring lining is fixed in the inwall of part at the bottom of the pump, and stationary ring and main shaft maintain the space; Bearing ring is the coil of band bipod, and with compress and fixedly rotating ring and moving ring sleeve mode be installed in the rotating ring, its bipod is inserted in two breach of internal gear fluted disc; Bearing support is a ring stand, is placed on the moving ring sleeve shoulder lattice; And in bearing ring, adorn a tower spring, and by the tower spring bearing support and bearing ring are strutted, keep certain pressure between the two and make, and the internal surface of moving ring sleeve is contacted with the intimate of main shaft, make the slurries in the pump housing when pump operation or running, not make leakage.
8. gear stock pump according to claim 1 is characterized in that, the feed inlet and outlet of the described pump housing is arranged on the inner chamber position that is higher than inner chamber body.
9. gear stock pump according to claim 1 is characterized in that, described charging joint and discharging joint are provided with sealing O shape circle and are installed to separately on the pump housing turnover slurry pipe with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219929 CN2348150Y (en) | 1998-08-28 | 1998-08-28 | Internal engagement gear pulp pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219929 CN2348150Y (en) | 1998-08-28 | 1998-08-28 | Internal engagement gear pulp pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2348150Y true CN2348150Y (en) | 1999-11-10 |
Family
ID=33971827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98219929 Expired - Fee Related CN2348150Y (en) | 1998-08-28 | 1998-08-28 | Internal engagement gear pulp pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2348150Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404864C (en) * | 2002-05-22 | 2008-07-23 | 北京有色金属研究总院 | Metering pump used for transporting molten metal |
| CN104364527A (en) * | 2012-06-01 | 2015-02-18 | 爱信精机株式会社 | Internal gear pump |
| CN106382221A (en) * | 2015-08-07 | 2017-02-08 | 绍兴瑞群纺织机械科技有限公司 | Slurry conveying pump of rotary screen printing machine |
-
1998
- 1998-08-28 CN CN 98219929 patent/CN2348150Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404864C (en) * | 2002-05-22 | 2008-07-23 | 北京有色金属研究总院 | Metering pump used for transporting molten metal |
| CN104364527A (en) * | 2012-06-01 | 2015-02-18 | 爱信精机株式会社 | Internal gear pump |
| CN104364527B (en) * | 2012-06-01 | 2016-10-05 | 爱信精机株式会社 | internal gear pump |
| US9765774B2 (en) | 2012-06-01 | 2017-09-19 | Aisin Seiki Kabushiki Kaisha | Internal gear pump |
| CN106382221A (en) * | 2015-08-07 | 2017-02-08 | 绍兴瑞群纺织机械科技有限公司 | Slurry conveying pump of rotary screen printing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |