CN102287368A - Composite balance single-suction double-screw pump - Google Patents
Composite balance single-suction double-screw pump Download PDFInfo
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- CN102287368A CN102287368A CN2011102824568A CN201110282456A CN102287368A CN 102287368 A CN102287368 A CN 102287368A CN 2011102824568 A CN2011102824568 A CN 2011102824568A CN 201110282456 A CN201110282456 A CN 201110282456A CN 102287368 A CN102287368 A CN 102287368A
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- screw rod
- thrust
- screw
- end cover
- bulge loop
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Abstract
The invention relates to a composite balance single-suction double-screw pump, which comprises a pump body, a driving screw, a driven screw, a front end cover and a rear end cover, wherein one end of the driving screw extends out of the front end cover; a balance convex loop is arranged at a matching position between the driving screw and the front end cover; the driving screw on the outer side of the balance convex loop is provided with a bearing through a bearing base; an anti-thrust convex block at the other end of the driving screw is provided with an anti-thrust concave ring along the radial direction; the driven screw corresponding to the anti-thrust convex block is provided with an anti-thrust convex ring; the anti-thrust convex ring is matched with the anti-thrust concave ring correspondingly, and is positioned in the rear end cover; the end part of the driven screw on the outer side of the anti-thrust convex ring is provide with a shaft sleeve; the outer end face of the shaft sleeve is provided a hemispheric salient point; the hemispheric salient point of the shaft sleeve is contacted with the inner end face of the rear end cover; and the other end of the driven screw is in a cantilever shape. The anti-thrust convex ring is correspondingly matched with the anti-thrust concave ring by adopting a thermal sleeve process, so that low-pressure self-balancing of the driving screw and high-pressure self-balancing of the driven screw are realized, the structure is simplified, the axial force on the driving screw is reduced, and the service life is prolonged.
Description
Technical field
The invention belongs to the screw pump technical field, be specifically related to the single suction two screw pump.
Background technique
At present, single suction twin-screw pump structure is in the hole of a pair of screw rod neck bush 2 that is installed in the pump housing 1, sees Fig. 2.Initiatively screw rod 3 is the protruding spiral of double end, and driven screw rod 4 is three recessed spirals.On the driving and driven screw rod a pair of intermeshing helical gear arranged, the axial position of driven screw rod is fixing by a pair of dismountable helical gear 15 that is assemblied in two screw rod ends, and therefore the total axial force that acts on two screw rods is all born by the active screw rod.The screw axial equilibrium of forces is will get rid of among the high-pressure medium introducing screw rod back space B of chamber A by pump housing inner passage, comes balancing axial thrust by the pressure difference at forward horizontal stand piston and back balance piston two ends.Forward and backward equalizing piston place has sliding bearing 11 and 13 to play a part the throttling medium from hyperbaric chamber inflow low-pressure cavity, radial ball bearing 9 bears the residue axial force and plays fixedly mobile jib axial position, owing to sliding bearing 11 and 13 before and after the reason of processing and assembly precision also is to let out part in the pump, cause the pump duty deficiency, influence volumetric efficiency.The problem that single suction two screw pump structure exists is: 1. the component of single suction two screw rods pump in the market are more, complex structure, because the production and the assembly precision problem of component are easy to generate noise, and underfed, volumetric efficiency is low; 2. form and position tolerance between lining 2, active screw rod 3, driven screw rod 4, front slide bearing 11, back sliding bearing 13, a pair of helical gear 15 these 6 parts and tolerance of size are because the error of processing and assembling causes " seize "; 3. screw rod is paid the axial force that is subjected to and is acted on the radial ball bearing 9 of screw rod initiatively by thrust flanges, causes the damage of bearing, makes screw rod pay that play is logical rear end cover 14 mills backward.
Summary of the invention
Problems such as the noise that existing single suction two screw pump exists is big in order to solve, underfed, volumetric efficiency are low the invention provides a kind of composite balance type single suction two screw pump.
The technical solution that realizes above-mentioned purpose is as follows:
Composite balance type single suction two screw pump comprises the pump housing, active screw rod and driven screw rod, and initiatively the cooperation of screw rod and driven screw rod is positioned at the pump housing, and an end of the described pump housing is provided with front cover, and the other end is provided with rear end cover; The pump housing adjacent with a front cover radially side is provided with outlet, and the pump housing corresponding with outlet is discharge side; A radially side of rear end cover is provided with import, and the inner chamber of rear end cover is a suction chamber; One end of described active screw rod extends outside the front cover, and initiatively the cooperation place of screw rod and front cover is provided with the balance bulge loop, is provided with bearing by bearing support on the active screw rod in the balance bulge loop outside, and bearing support is connecting front cover; Initiatively the other end of screw rod is connecting columned thrust projection, and the footpath of thrust projection upwards is provided with the thrust scrobicular ring; The driven screw rod corresponding with the thrust projection is provided with the thrust bulge loop, thrust bulge loop and thrust scrobicular ring corresponding matching, and be positioned at rear end cover; The driven screw rod end in the thrust bulge loop outside is arranged with axle sleeve, and the middle part, exterior edge face of axle sleeve is provided with hemispherical salient point, and the hemispherical salient point of axle sleeve contacts with the interior edge face of rear end cover; The other end of driven screw rod is cantilever-shaped, and the corresponding below, outlet port that is positioned at the pump housing.
The diameter of described balance bulge loop is 1.5 times of active screw diameter, and axial width is 0.6 times of active screw diameter.
The axial middle part of described driven screw rod is provided with center hole.
The outer surface of the described pump housing is laid with the heat radiation bulge loop.
The exterior edge face of described axle sleeve is a square.
Useful technique effect of the present invention is embodied in following several aspect:
1. the pump overall structure is simplified (nearly 15 of original structure component, new structure has only 8).Pump adopts the pump housing, lining integrated design, under the prerequisite that the runnability that has satisfied screw pump requires, change traditional screw rod supporting way, cancel four axle sleeve dual-supportings (directly supporting) by " ∞ " word hole of housing, reduced leakage point, the convex thrust flanges on the driven screw rod adopts hot cover process, thereby simplifies the structure, processes simple, mounting or dismounting are convenient, realized that the weight of little, the lightweight advantage new structure of pump volume pump head only is 1/5 of existing structure;
2. pump housing material of the present invention adopts aluminum alloy, improves wear resistance and seizure resistance, improve product usability, increase the service life, and enlarged the using scope of product;
The present invention initiatively screw rod adopt the low pressure self balancing, driven screw rod adopts the high pressure self balancing, reduces the axial force that screw rod initiatively is subjected to greatly, improve product usability, increase the service life.
Description of drawings
Fig. 1 is a section of structure of the present invention.
Fig. 2 is existing single suction two screw pump section of structure.
Fig. 3 is the axle sleeve structure schematic representation.
Sequence number among Fig. 1: rear end cover 1, active screw rod 2, driven screw rod 3, the pump housing 4, front cover 5, bearing 6, mechanical seal ring 7, bearing support 8, balance bulge loop 9, thrust bulge loop 10, axle sleeve 11, thrust scrobicular ring 12.
Sequence number among Fig. 2: the pump housing 1, lining 2, active screw rod 3, driven screw rod 4, front cover 5, bearing support 6, sealing gland 7, mechanical seal 8, radial ball bearing 9, forward horizontal stand piston 10, front slide bearing 11, back balance piston 12, back sliding shaft sleeve 13, rear end cover 14, a pair of helical gear 15.Among Fig. 2: A is for getting rid of chamber (hyperbaric chamber), and B is screw rod back space (hyperbaric chamber).
Embodiment
In conjunction with the accompanying drawings, by embodiment the present invention is further described.
Referring to Fig. 1, composite balance type single suction two screw pump comprises the pump housing 4, active screw rod 2 and driven screw rod 3, and initiatively screw rod 2 and 3 cooperations of driven screw rod are positioned at the pump housing, and the axial middle part of driven screw rod is provided with center hole.One end of the pump housing 4 is provided with front cover 5, and the other end is provided with rear end cover 1; The outer surface of the pump housing is laid with the heat radiation bulge loop.The pump housing 4 adjacent with front cover 5 a radially side is provided with outlet, and the pump housing corresponding with outlet is discharge side B; A radially side of rear end cover 1 is provided with import, and the inner chamber of rear end cover 1 is suction chamber A; Initiatively an end of screw rod 2 extends outside the front cover 5, and initiatively screw rod 2 is provided with balance bulge loop 9 with the cooperation place of front cover 5, and the diameter of balance bulge loop is 1.5 times of active screw diameter, and axial width is 0.6 times of active screw diameter; Be provided with bearing 6 and mechanical seal ring 7 by bearing support 8 on the active screw rod 2 in balance bulge loop 9 outsides, bearing support 8 is connecting front cover 5.Initiatively the other end of screw rod 2 is connecting columned thrust projection, and the footpath of thrust projection upwards is provided with thrust scrobicular ring 12; The driven screw rod 3 corresponding with the thrust projection is provided with thrust bulge loop 10, thrust bulge loop 10 and thrust scrobicular ring 12 corresponding matching, and be positioned at rear end cover 1.Driven screw rod 3 ends in thrust bulge loop 10 outsides are arranged with axle sleeve 11, see Fig. 3, and the exterior edge face of axle sleeve 11 is a square, and the middle part is provided with hemispherical salient point, and the hemispherical salient point of axle sleeve 11 contacts with the interior edge face of rear end cover 1; When pump turns round by preventing the spinning of axle sleeve 11 with bonnet interference spatially.The other end of driven screw rod 3 is cantilever-shaped, and the corresponding below, outlet port that is positioned at the pump housing 4.
Initiatively the axial position of screw rod 2 is to be determined by bearing 6, and initiatively screw rod 2 is that pressure difference by balance bulge loop 9 two ends reaches self balancing.
The axial position of driven screw rod 3 is fixing by thrust bulge loop 10, the balance of axial force of driven screw rod 3 is that the high-pressure medium of the discharge side hole by driven screw rod 3 centers is incorporated into screw rod tail, reach axial force self-balancing by the throttling medium from the axle sleeve 11 that discharge side flows into suction chamber, axle sleeve 11 is used in masterpiece on the rear end cover 1.
Claims (5)
1. composite balance type single suction two screw pump comprises the pump housing, active screw rod and driven screw rod, and initiatively the cooperation of screw rod and driven screw rod is positioned at the pump housing, and an end of the described pump housing is provided with front cover, and the other end is provided with rear end cover; It is characterized in that: the pump housing adjacent with a front cover radially side is provided with outlet, and the pump housing corresponding with outlet is discharge side; A radially side of rear end cover is provided with import, and the inner chamber of rear end cover is a suction chamber; One end of described active screw rod extends outside the front cover, and initiatively the cooperation place of screw rod and front cover is provided with the balance bulge loop, is provided with bearing by bearing support on the active screw rod in the balance bulge loop outside, and bearing support is connecting front cover; Initiatively the other end of screw rod is connecting columned thrust projection, and the footpath of thrust projection upwards is provided with the thrust scrobicular ring; The driven screw rod corresponding with the thrust projection is provided with the thrust bulge loop, thrust bulge loop and thrust scrobicular ring corresponding matching, and be positioned at rear end cover; The driven screw rod end in the thrust bulge loop outside is arranged with axle sleeve, and the middle part, exterior edge face of axle sleeve is provided with hemispherical salient point, and the hemispherical salient point of axle sleeve contacts with the interior edge face of rear end cover; The other end of driven screw rod is cantilever-shaped, and the corresponding below, outlet port that is positioned at the pump housing.
2. composite balance type single suction two screw pump according to claim 1 is characterized in that: the diameter of described balance bulge loop is 1.5 times of the active screw diameter, and axial width is 0.6 times of active screw diameter.
3. composite balance type single suction two screw pump according to claim 1, it is characterized in that: the axial middle part of described driven screw rod is provided with center hole.
4. composite balance type single suction two screw pump according to claim 1, it is characterized in that: the outer surface of the described pump housing is laid with the heat radiation bulge loop.
5. composite balance type single suction two screw pump according to claim 1 is characterized in that: the exterior edge face of described axle sleeve is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282456 CN102287368B (en) | 2011-09-22 | 2011-09-22 | Composite balance single-suction double-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282456 CN102287368B (en) | 2011-09-22 | 2011-09-22 | Composite balance single-suction double-screw pump |
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| Publication Number | Publication Date |
|---|---|
| CN102287368A true CN102287368A (en) | 2011-12-21 |
| CN102287368B CN102287368B (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110282456 Active CN102287368B (en) | 2011-09-22 | 2011-09-22 | Composite balance single-suction double-screw pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122000A (en) * | 2016-08-26 | 2016-11-16 | 黄山艾肯机械制造有限公司 | A kind of screw pump assembly of hydro-cushion |
| CN106194719A (en) * | 2016-08-26 | 2016-12-07 | 黄山艾肯机械制造有限公司 | A kind of screw pump of low viscosity high pressure |
| CN109026676A (en) * | 2016-12-21 | 2018-12-18 | 黄山赛德工业泵有限公司 | Quimby pump is used in a kind of conveying of self-balancing |
| CN114635847A (en) * | 2020-12-15 | 2022-06-17 | 莱斯特里兹泵吸有限责任公司 | Screw pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1121553A1 (en) * | 1983-02-02 | 1984-10-30 | Предприятие П/Я А-3884 | Screw expansion regrigerating machine |
| CN201347856Y (en) * | 2009-02-06 | 2009-11-18 | 黄山工业泵制造有限公司 | Novel horizontal-type single-suction two-screw pump |
| CN201474963U (en) * | 2009-09-04 | 2010-05-19 | 黄山工业泵制造有限公司 | External magnetic drive double-screw pump |
| CN201671811U (en) * | 2010-05-27 | 2010-12-15 | 黄山工业泵制造有限公司 | Medium- and low-voltage two-screw pump |
| CN202266415U (en) * | 2011-09-22 | 2012-06-06 | 黄山工业泵制造有限公司 | Compound balance type single-suction double-screw pump |
-
2011
- 2011-09-22 CN CN 201110282456 patent/CN102287368B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1121553A1 (en) * | 1983-02-02 | 1984-10-30 | Предприятие П/Я А-3884 | Screw expansion regrigerating machine |
| CN201347856Y (en) * | 2009-02-06 | 2009-11-18 | 黄山工业泵制造有限公司 | Novel horizontal-type single-suction two-screw pump |
| CN201474963U (en) * | 2009-09-04 | 2010-05-19 | 黄山工业泵制造有限公司 | External magnetic drive double-screw pump |
| CN201671811U (en) * | 2010-05-27 | 2010-12-15 | 黄山工业泵制造有限公司 | Medium- and low-voltage two-screw pump |
| CN202266415U (en) * | 2011-09-22 | 2012-06-06 | 黄山工业泵制造有限公司 | Compound balance type single-suction double-screw pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122000A (en) * | 2016-08-26 | 2016-11-16 | 黄山艾肯机械制造有限公司 | A kind of screw pump assembly of hydro-cushion |
| CN106194719A (en) * | 2016-08-26 | 2016-12-07 | 黄山艾肯机械制造有限公司 | A kind of screw pump of low viscosity high pressure |
| CN109026676A (en) * | 2016-12-21 | 2018-12-18 | 黄山赛德工业泵有限公司 | Quimby pump is used in a kind of conveying of self-balancing |
| CN114635847A (en) * | 2020-12-15 | 2022-06-17 | 莱斯特里兹泵吸有限责任公司 | Screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102287368B (en) | 2013-07-24 |
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