CN105370563A - Screw pump - Google Patents
Screw pump Download PDFInfo
- Publication number
- CN105370563A CN105370563A CN201410408745.1A CN201410408745A CN105370563A CN 105370563 A CN105370563 A CN 105370563A CN 201410408745 A CN201410408745 A CN 201410408745A CN 105370563 A CN105370563 A CN 105370563A
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- China
- Prior art keywords
- stator
- rotor
- screw pump
- tightening force
- hoop
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Abstract
The present invention relates to the technical field of engineering machinery, and discloses a screw pump, which comprises a rotor and a stator, wherein the stator is wrapped on the outer side of the rotor, the stator and the rotor form a screw pair, the inner wall of the stator and the outer wall of the rotor are connected in a sealed manner, a plurality of sealed cavities are formed between the inner side of the stator and the outer side of the rotor, the screw pump further comprises a pre-tightening force adjustment device, the pre-tightening force adjustment device comprises a plurality of clamping mechanisms wrapped on the outer side of the stator and aligned along the axial center line direction of the stator, and each clamping mechanism can be separately adjusted, ie., the action forces of each clamping mechanism on the stator can be controlled separately. With the technical scheme of the present invention, the action forces of each clamping mechanism on the stator can be adjusted so as to improve the pre-tightening force equilibrium between the stator and the rotor in the screw pair of the screw pump, such that the wear is generated between the stator and the rotor so as to prolong the service lives of the rotor and the stator.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of screw pump.
Background technique
Current screw pump, as conveying equipment, is widely used in the infrastructure constructions such as traffic, the energy, building, and it all plays a very important role raising efficiency of construction, guarantee construction quality etc.
In prior art, as shown in Figure 1, screw pump comprises stator 01, rotor 02, be wrapped in the clamp 03 outside stator 01 and the adjusting bolt 04 in clamp, stator 01 and rotor 02 form screw pair, stator 01 in screw pair and rotor 02 form multiple sealed volume, and the pretightening force after having assembled between stator 01 and all surface of contact of rotor 02 is identical.When screw pair normally works, each sealed volume produces working pressure and pressure reduction between each sealed volume is equal, namely the pressure of the entry end of screw pair is large, the pressure of outlet end is little, so just become the pretightening force of the entry end of screw pair little, the pretightening force of outlet end is large, exacerbates the wearing and tearing between screw pair outlet end rotor 02 and stator 01, thus affects the normal service life of screw pair.In order to adjust in the course of the work the unbalanced impact caused the working life of screw pair of pretightening force everywhere, sandwich in the outside of screw pair stator 01 and have clamp 03, and by regulating bolt 04 in clamp 03 to adjust the pretightening force of rotor 02 and stator 01, ensure that screw pair can work under ordinary life.
In the prior art, the clamp 03 of adjustment screw pair pretightening force is overall structure, but ensure the normal service life of screw pair, the adjustment of screw pair pretightening force will be adjusted according to the minimum pretightening force between screw pair, the pretightening force of screw pair entry end is minimum, but according to the pressure dependence between sealed volume during work, pretightening force between screw pair rotor 02 and stator 01 increases gradually from entry end to outlet end, also increase gradually from entry end to the friction outlet end stator 01 and rotor 02, the rotor 02 of outlet end and the first damage of stator 01 must be caused, reduce working life.Moreover, because stator 01 and rotor 02 are as the impact of the machining errors such as pitch, throw of eccentric and radial dimension, also the pretightening force between the rotor 02 after assembling and stator 01 can be caused not mate, the wearing and tearing of cavity volume Contact part can be aggravated, reduce further working life.
Therefore, the screw pump rotor adopted in prior art and the life-span of stator low.
Summary of the invention
The invention provides a kind of screw pump, the pre-tightening force adjusting device of this screw pump has multiple regulative mode, and the basis of existing structure improves the working life of stators and rotators.
For achieving the above object, the invention provides following technological scheme:
A kind of screw pump, comprises rotor and stator; Described stator pack is wrapped in the outside of described rotor, and described stator and described rotor form screw pair; The inwall of described stator and the outer wall sealing of described rotor are connected, between inside described stator and outside described rotor, form multiple sealed volume; Also comprise pre-tightening force adjusting device, described pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside described stator and along the direction of axis line of described stator.
The pre-tightening force adjusting device of above-mentioned screw pump comprises being wrapped in outside stator and along the direction of axis line of stator and arranges multiple fastening device, each fastening device can regulate separately, namely each fastening device can control separately the active force of stator, therefore, above-mentioned screw pump can by the harmony regulating the active force of each fastening device to stator to improve pretightening force between the screw pair rotor of screw pump and stator, make uniform wear between rotor and stator, thus the working life of Extending Rotor and stator.
So screw pump provided by the invention can working life of Extending Rotor and stator.
Preferably, described pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside described stator and along the direction of axis line of described stator, specifically comprises:
Described pre-tightening force adjusting device comprises an axis and is sheathed on hoop outside stator; Described hoop is provided with multiple slot segmentations that the direction of axis line along described stator distributes, the multiple fastening devices arranged with the direction of axis line be divided into by described hoop along described stator.
Preferably, fastening device described in each is provided with at least one adjusting element.
Preferably, described pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside described stator and along the direction of axis line of described stator, specifically comprises:
Described pre-tightening force adjusting device comprises multiple clamps that the direction of axis line along described stator distributes, and clamp described in each is a described fastening device.
Preferably, clamp described in each is hoop.
Preferably, each described hoop is articulated with on the same axis, the shaft axis of described axle and the axis parallel of described stator.
Preferably, clamp described in each is two bolt clamps, and described pair of bolt clamp is made up of two anchor ears that narrow.
Preferably, clamp described in each is larynx hoop.
Preferably, described fastening device and described sealed volume one_to_one corresponding.
Accompanying drawing explanation
Fig. 1 is the structural representation of screw pair of the prior art;
The structural representation of screw pair in the screw pump that Fig. 2 provides for an embodiment of the present invention;
Fig. 3 is for the A-A of structure shown in Fig. 2 is to sectional view;
The structural representation of pre-tightening force adjusting device in the screw pump that Fig. 4 provides for an embodiment of the present invention;
Fig. 5 is for the B-B of pre-tightening force adjusting device shown in Fig. 4 is to sectional view;
The structural representation of pre-tightening force adjusting device in the screw pump that Fig. 6 provides for the another kind of embodiment of the present invention;
Fig. 7 is for the C-C of the pre-tightening force adjusting device shown in Fig. 6 is to sectional view;
The structural representation of pre-tightening force adjusting device in the screw pump that Fig. 8 provides for the another kind of embodiment of the present invention;
The D direction view that Fig. 9 is the pre-tightening force adjusting device shown in Fig. 8.
Description of reference numerals:
1, rotor 2, stator
3, hoop 31, separating groove
32, adjusting element 4, sealed volume
5, two bolt clamp 6, axle
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 2, Fig. 3, Fig. 2 provides the structural representation of screw pair in screw pump for the embodiment of the present invention, and Fig. 3 is for the A-A of structure shown in Fig. 2 is to sectional view; The screw pump that the embodiment of the present invention provides, comprises rotor 1 and stator 2; Stator 2 is wrapped in the outside of rotor 1, and stator 2 and rotor 1 form screw pair; The inwall of stator 2 and the outer wall sealing of rotor 1 are connected, between inside stator 2 and outside rotor 1, form multiple sealed volume 4; Also comprise pre-tightening force adjusting device, pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside stator 2 and along the direction of axis line of stator 2.
The pre-tightening force adjusting device of above-mentioned screw pump comprises being wrapped in outside stator 2 and along the direction of axis line of stator 2 and arranges multiple fastening device, each fastening device can regulate separately, namely each fastening device can control separately the active force of stator 2, therefore, above-mentioned screw pump can by the harmony regulating the active force of each fastening device to stator 2 to improve pretightening force between the screw pair rotor 1 of screw pump and stator 2, make uniform wear between rotor 1 and stator 2, thus the working life of Extending Rotor 1 and stator 2.
So screw pump provided by the invention can working life of Extending Rotor and stator.
Preferably, stator 2 and rotor 1 are all single coil configuration; The volume size forming multiple sealed volume 4 between inside stator 2 and outside rotor 1 is identical.
As shown in Fig. 2 ~ Fig. 5, in a kind of preferred implementation, pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside stator 2 and along the direction of axis line of stator 2, specifically comprises:
Pre-tightening force adjusting device comprises an axis and is sheathed on hoop 3 outside stator; Hoop 3 is provided with multiple slot segmentations 31 that the direction of axis line along stator distributes, with the multiple fastening devices being divided into by hoop 3 direction of axis line along stator to arrange.
As shown in Figure 2, above-mentioned hoop 3 is split by above-mentioned slot segmentation 31 multiple fastening devices that the direction of axis line along stator arranges, fastening device can according to the pretightening force between the different pressures well-balanced adjustment screw pair upper rotor part 1 in different sealing cavity volume 4 and stator 2, make the pretightening force of on whole screw pair each section reach balanced, make uniform wear between each section of rotor 1 and stator 2.
Obviously, each fastening device is provided with at least one adjusting element 32, fastening device regulates it to the active force of stator 2, to realize regulating the pretightening force between stator 2 position corresponding with fastening device and rotor 1 by least one adjusting element 32 that it is arranged.
Above-mentioned adjusting element 32 is preferably bolt.
In a preferred embodiment, pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside stator 2 and along the direction of axis line of stator 2, specifically comprises:
Pre-tightening force adjusting device comprises multiple clamps that the direction of axis line along stator distributes, and each clamp forms a fastening device.
On the basis of the various embodiments described above, above-mentioned clamp can have numerous embodiments:
Mode one, each clamp can be hoop.
On the basis of aforesaid way one, as shown in Figure 6 and Figure 7, each hoop is articulated with on the same axis 6, the shaft axis of axle 6 and the axis parallel of stator 2.
As shown in Figure 6 and Figure 7, multiple hoop is arranged at the axis direction of screw pair, each hoop is jointly on hinged and same axle 6, be hinged on the outside being wrapped in stator 2 that each hoop on axle 6 is closely neat, but be independent of each other between each hoop, each hoop can regulate hoop to the active force of corresponding stator 2, to realize regulating the pretightening force between stator 2 position corresponding with hoop and rotor 1 by regulating bolt on it.
As shown in Fig. 8 ~ Fig. 9, each clamp can be two bolt clamps 5, and two bolt clamp 5 is made up of two anchor ears that narrow.
Please refer to Fig. 2, composition graphs 8 ~ Fig. 9, multiple pairs of bolt clamps 5 are arranged at the axis direction of screw pair, each two bolt clamp 5 is a fastening device, obvious each pair of bolt clamp 5 has two adjusting bolts, two bolts on it jointly can regulate and act on stator 2 simultaneously, and two bolt clamp 5 can regulate it to the active force of stator 2, to realize regulating the pretightening force between stator 2 position corresponding with two bolt clamp 5 and rotor 1 by regulating two bolts on it.
Mode three, each clamp can be larynx hoop.
On the basis of the respective embodiments described above, above-mentioned fastening device can also have other forms of set-up mode, as clip, shroud ring etc., does not do detailed description at this.
In an advantageous embodiment, fastening device and sealed volume 4 one_to_one corresponding.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a screw pump, comprises rotor and stator; Described stator pack is wrapped in the outside of described rotor, and described stator and described rotor form screw pair; The inwall of described stator and the outer wall sealing of described rotor are connected, between inside described stator and outside described rotor, form multiple sealed volume; It is characterized in that, also comprise pre-tightening force adjusting device, described pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside described stator and along the direction of axis line of described stator.
2. screw pump according to claim 1, is characterized in that, described pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside described stator and along the direction of axis line of described stator, specifically comprises:
Described pre-tightening force adjusting device comprises an axis and is sheathed on hoop outside stator; Described hoop is provided with multiple slot segmentations that the direction of axis line along described stator distributes, the multiple fastening devices arranged with the direction of axis line be divided into by described hoop along described stator.
3. screw pump according to claim 2, is characterized in that, each fastening device is provided with at least one adjusting element.
4. screw pump according to claim 1, is characterized in that, described pre-tightening force adjusting device comprises the multiple fastening devices being wrapped in and arranging outside described stator and along the direction of axis line of described stator, specifically comprises:
Described pre-tightening force adjusting device comprises multiple clamps that the direction of axis line along described stator distributes, and clamp described in each is a described fastening device.
5. screw pump according to claim 4, is characterized in that, clamp described in each is hoop.
6. screw pump according to claim 5, is characterized in that, each described hoop is articulated with the same axis, the shaft axis of described axle and the axis parallel of described stator.
7. screw pump according to claim 4, is characterized in that, clamp described in each is two bolt clamps, and described pair of bolt clamp is made up of two anchor ears that narrow.
8. screw pump according to claim 4, is characterized in that, clamp described in each is larynx hoop.
9. the screw pump according to any one of claim 1 ~ 8, is characterized in that, described fastening device and described sealed volume one_to_one corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410408745.1A CN105370563B (en) | 2014-08-19 | 2014-08-19 | A kind of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410408745.1A CN105370563B (en) | 2014-08-19 | 2014-08-19 | A kind of screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370563A true CN105370563A (en) | 2016-03-02 |
| CN105370563B CN105370563B (en) | 2018-08-21 |
Family
ID=55373079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410408745.1A Active CN105370563B (en) | 2014-08-19 | 2014-08-19 | A kind of screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370563B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3641855A1 (en) * | 1986-12-08 | 1988-06-16 | Allweiler Ag Werk Bottrop | Adjustable stator for eccentric screw pumps |
| DE10029307A1 (en) * | 2000-06-14 | 2001-12-20 | Usd Formteiltechnik Gmbh | Insertion stator for eccentric screw pumps has a removable elastomer body with sections held by clamp holders and which can be exchanged when worn without dismantling the stator |
| CN101985941A (en) * | 2009-07-23 | 2011-03-16 | Pcm公司 | Screw pump and an associated pump device |
| CN203146314U (en) * | 2013-03-25 | 2013-08-21 | 韩树 | Screw pump |
| CN103282664A (en) * | 2010-12-27 | 2013-09-04 | 兵神装备株式会社 | Uniaxial eccentric screw pump |
-
2014
- 2014-08-19 CN CN201410408745.1A patent/CN105370563B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3641855A1 (en) * | 1986-12-08 | 1988-06-16 | Allweiler Ag Werk Bottrop | Adjustable stator for eccentric screw pumps |
| DE10029307A1 (en) * | 2000-06-14 | 2001-12-20 | Usd Formteiltechnik Gmbh | Insertion stator for eccentric screw pumps has a removable elastomer body with sections held by clamp holders and which can be exchanged when worn without dismantling the stator |
| CN101985941A (en) * | 2009-07-23 | 2011-03-16 | Pcm公司 | Screw pump and an associated pump device |
| CN103282664A (en) * | 2010-12-27 | 2013-09-04 | 兵神装备株式会社 | Uniaxial eccentric screw pump |
| CN203146314U (en) * | 2013-03-25 | 2013-08-21 | 韩树 | Screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105370563B (en) | 2018-08-21 |
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