CN202510361U - Single screw rod pair - Google Patents
Single screw rod pair Download PDFInfo
- Publication number
- CN202510361U CN202510361U CN2011205794979U CN201120579497U CN202510361U CN 202510361 U CN202510361 U CN 202510361U CN 2011205794979 U CN2011205794979 U CN 2011205794979U CN 201120579497 U CN201120579497 U CN 201120579497U CN 202510361 U CN202510361 U CN 202510361U
- Authority
- CN
- China
- Prior art keywords
- single screw
- screw rod
- stator
- rubber lining
- pressure
- 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.)
- Expired - Lifetime
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Images
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- Rotary Pumps (AREA)
Abstract
The utility model relates to a screw rod pair, in particular to a single screw rod pair. The single screw rod pair comprises a rigidity stator (1) and a first single screw rod (3), wherein a layer of rubber lining with an even thickness of 5-10 millimeters is fixed on an outer surface of the first single screw rod (3). The single screw rod pair improves the pressure of the first single screw rod, reduces leakage and improves volume efficiency, and a first-class first single screw rod like this can produce 1mpa pressure.
Description
Technical field
The utility model relates to screw pair.
Background technique
Screw rod and stator engagement generate potted line, and potted line constitutes Seal cage, holds medium.When screw rod is pressed the counterclockwise rotation of regulation, move to the Seal cage constancy of volume to the stator outlet end, medium transport is gone out.When the outlet end medium is obstructed, the pressure medium in the Seal cage will correspondingly improve.The Seal cage that potted line separates always the place ahead (outlet end) pressure greater than the rear to pressure.Therefore, have only the sub-fraction medium to squeeze to open potted line to be back to the rear, discharge pressure is reduced, quantity delivered reduces.This leakage is inevitably, the size that how much depends on seal clearance of capacity of reflux and the intensity of sealing, and the big capacity of reflux in gap is big, and pressure falls greatly, and sealing intensity is high.Potted line is not easy to be squeezed to open expansion, and pressure falls and can reduce, and capacity of reflux also can reduce, and volumetric efficiency will be higher.
How to reduce seal clearance, carry sealing intensity, this is the problem that the helical rotor pump industry is paid close attention to always.Fig. 3 and Fig. 4 are respectively the main sectional view and the radial cross-section of single screw pair of traditional rigid stator 5 and second single screw rod 6 formations, and this list screw pair does not solve the seal clearance problem, because rigidity stator 5 and second single screw rod 6 all are rigidity; Difficulty is made in rigidity stator 5 chambeies; Guarantee the running successfully in rigidity stator 5 an actor's rendering of an operatic tune of second single screw rod 6, therefore just leave bigger seal clearance, this just makes its pressure fall greatly; Leak big; Pressure is low, and volumetric efficiency is low, even can not carry low viscous medium; Fig. 5 and Fig. 6 are respectively the main sectional view and the radial cross-section of single screw pair that traditional elastomer stator and the 3rd single screw rod 9 constitute; Because the stator rubber layer thickness is inhomogeneous, under the effect of pressure medium, the place from the rubber bed thickness struts potted line easily; Its pressure is fallen greatly; Leak greatly, volumetric efficiency is low, 1 grade of pressure that should the list screw pair only can produce 0.6MPa.
The model utility content
The purpose of the utility model is the deficiency to above-mentioned existing technology, and a kind of single screw pair is provided, and leaks with the pressure and volumetric efficiency, the minimizing that improve screw pair, can carry the low viscosity medium.
The utility model comprises rigidity stator 1, first single screw rod 3.An intrinsic layer thickness evenly and be rubber lining or the elastic composite of 5～10mm on first single screw rod 3 outer surfaces.Be processed with blind hole on the whole outer surface of first single screw rod 3; Each blind hole is that diameter, the degree of depth are respectively the circular hole of 3～8mm, 3.5～6mm or the regular polygon hole that circumscribed circle diameter is 3～8mm; Centre distance between every adjacent two blind holes is 30～70mm; Rubber lining Latin 4 in the blind hole on rubber lining 2 and first single screw rod 3 outer surfaces is connected as a single entity, and rubber lining 2 is fixedly connected on the whole outer surface of first single screw rod 3.
The technique effect of the utility model is: improved the pressure of single screw pair, reduced and leak, improved volumetric efficiency, the single screw pair of such one-level can produce the pressure of 1Mpa.
Description of drawings
Fig. 1 is the A-A sectional view among Fig. 2,
Fig. 2 is the main sectional view of single screw pair of rigidity stator and single screw rod outer lining rubber formation,
Fig. 3 is the B-B sectional view among Fig. 4,
Fig. 4 is the main sectional view of single screw pair of rigidity stator and single screw rod formation,
Fig. 5 is the main sectional view of single screw pair of elastomer stator and single screw rod formation
Fig. 6 is the C-C sectional view among Fig. 5.
In Fig. 1, Fig. 3, Fig. 5
1, rigidity stator 2, rubber lining or elastic composite 3, first single screw rod
4, rubber lining Latin 5, rigidity stator 6, second single screw rod
7, stirrup 8, elastomer stator the 9, the 3rd single screw rod
Embodiment
Embodiment 1
This list screw pair comprises rigidity stator 1, first single screw rod 3, and rigidity stator 1 cylinder iron processes, and single screw rod 3 usefulness 2Cr13 process, and an intrinsic layer thickness evenly and be that the rubber of 5mm serves as a contrast 2 on first single screw rod 3 outer surfaces.Be processed with identical circular blind hole on the outer surface of first single screw rod 3; Each circular blind hole is that diameter, the degree of depth are respectively the circular hole of 4mm, 3.5mm or the shape hole, positive 4 limit that circumscribed circle diameter is 4mm; Centre distance between every adjacent two circular blind holes is 50mm; Rubber lining Latin 4 in the blind hole on rubber lining 2 and first single screw rod 3 outer surfaces is connected as a single entity, and rubber lining 2 is fixedly connected on the whole outer surface of first single screw rod 3.
All the other technical characteristicss are identical with technological scheme.
All the other technical characteristicss are identical with technological scheme.
Embodiment 3
This list screw pair comprises that the single screw rod of rigidity stator 1, first 3, rigidity stator 1 cylinder iron process, and single screw rod 3 usefulness 2Cr13 process, and has a layer thickness evenly and be the rubber lining 2 of 7mm on first single screw rod 3 outer surfaces.Be processed with identical circular blind hole on the whole outer surface of first single screw rod 3; Each circular blind hole is that diameter, the degree of depth are respectively the circular hole of 6mm, 5.5mm or the shape hole, positive 6 limit that circumscribed circle diameter is 6mm; Centre distance between every adjacent two circular blind holes is 60mm; Rubber lining Latin 4 in the blind hole on rubber lining 2 and first single screw rod 3 outer surfaces is connected as a single entity, and rubber lining 2 is fixedly connected on the whole outer surface of first single screw rod 3.
All the other technical characteristicss are identical with technological scheme.
Claims (4)
1. a single screw pair comprises rigidity stator (1), first single screw rod (3), it is characterized in that the rubber lining (2) that an intrinsic layer thickness is 5～10mm on first single screw rod (3) outer surface.
2. single screw pair according to claim 1 is characterized in that rubber lining (2) thickness on first single screw rod (3) outer surface is 5mm.
3. single screw pair according to claim 1 is characterized in that rubber lining (2) thickness on first single screw rod (3) outer surface is 6mm.
4. single screw pair according to claim 1 is characterized in that rubber lining (2) thickness on first single screw rod (3) outer surface is 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205794979U CN202510361U (en) | 2011-12-31 | 2011-12-31 | Single screw rod pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205794979U CN202510361U (en) | 2011-12-31 | 2011-12-31 | Single screw rod pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510361U true CN202510361U (en) | 2012-10-31 |
Family
ID=47062852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205794979U Expired - Lifetime CN202510361U (en) | 2011-12-31 | 2011-12-31 | Single screw rod pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151027A (en) * | 2016-08-31 | 2016-11-23 | 程巍 | Metal composite screw pump rotor |
-
2011
- 2011-12-31 CN CN2011205794979U patent/CN202510361U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151027A (en) * | 2016-08-31 | 2016-11-23 | 程巍 | Metal composite screw pump rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
|
| CX01 | Expiry of patent term |