CN2345737Y - Screw pump - Google Patents
Screw pump Download PDFInfo
- Publication number
- CN2345737Y CN2345737Y CN 98224936 CN98224936U CN2345737Y CN 2345737 Y CN2345737 Y CN 2345737Y CN 98224936 CN98224936 CN 98224936 CN 98224936 U CN98224936 U CN 98224936U CN 2345737 Y CN2345737 Y CN 2345737Y
- Authority
- CN
- China
- Prior art keywords
- rubber bushing
- bushing
- jacket layer
- rubber liner
- shell body
- 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
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model relates to a screw pump which comprises an upper shell body, a screw, a rubber liner bushing and a rigid coating object outside the rubber liner bushing. An annular deep groove is cut at one end of the rubber liner bushing along the position of a middle ring line of the wall thickness. The rubber liner bushing is divided into an inner lining layer and an outer lining layer. An annular sealed shim which is integrally formed and has proper thickness extends out of the outer bushing layer of the rubber liner bushing positioned at the same end. The rigid coating object is a lower shell body which is sheathed on the outer bushing layer of the rubber liner bushing. One end of the lower shell body and one end of an upper shell body are abutted by the annular sealed shim, and are pressed and fixed by a flange, and the other end of the lower shell body and the outer bushing layer of the rubber liner bushing keep a certain gap.
Description
The utility model relates to a kind of screw pump.
As shown in Figure 1, traditional screw pump is to be connected on the motor output shaft 1 by universal shaft coupling 5, and it comprises rubber bushing (stator) 4, screw rod (rotor) 2 and steel pipe shell 3.Because steel pipe shell 3 is coated on the outside of rubber bushing 4, and is glued together with rubber, so stator 4 can not do radially oscillating motion, and overall structure is a rigidity.In order to satisfy relative " planet " revolution (being that rotation is revolved round the sun again) necessary between screw rod 2 and the rubber bushing 4, screw pump need dispose a universal shaft coupling 5, screw rod 2 connects by universal shaft coupling 5 and motor output shaft 1, thereby make screw rod 2 make rotation and revolution motion in the inside of fixing rubber bushing 4, promptly screw rod (rotor) 2 (by the universal shaft coupling transition) must be flexible.The screw pump of this structure exists the axial dimension of pump also will consider universal shaft coupling 5 sealing problems greatly, simultaneously, so complex structure, the fabricating cost height, particularly its rubber bushing 4 and 3 gluings of steel pipe shell are together, run duration one is long, be easy to generate the defect of coming unstuck, make the screw pump cisco unity malfunction.
It is a kind of simple in structure, with low cost that the purpose of this utility model is to provide, and can avoid rubber and steel pipe to produce the screw pump of the defect of coming unstuck.
The purpose of this utility model is to realize like this, a kind of screw pump, it directly and the motor shaft link, it comprises the rigidity coating that upper shell, screw rod, rubber bushing and rubber bushing are outer, it is characterized in that: the into deep trouth of a ring-type is cut in the neutral position that described rubber bushing one end is positioned between axis hole and periphery wall, rubber bushing is divided into interior jacket layer and jacket layer, and on the jacket layer of the rubber bushing that is positioned at same end, extends an integrally formed annular seal pad with suitable thickness; Described rigidity coating is a lower shell body that is enclosed within on the rubber bushing jacket layer, and an end of one end and upper shell is fixed by flange screw by described gasket seal is involutory, and the jacket layer of the other end and rubber bushing keeps certain interval.
Owing to adopted above-mentioned technical solution, rubber bushing has had inside and outside two jacket layers (between certain interval is arranged), interior jacket layer is because the elasticity of rubber is flexible, can be along with the rotation of screw rod, work radially wobbles, screw rod directly connects with the motor shaft, only makes spinning motion, interior jacket layer radially wobble and the spinning motion of screw rod makes the relative movement between the screw and bushing satisfy the requirement of planetary motion.And an end of the jacket layer of rubber bushing compresses by shell flange, making whole rubber bushing can not follow screw rod rotates, also served as simultaneously the effect of gasket seal between the lower shell body on the pump, the lining the other end is unsettled, can do certain radially wobbling with the rotation of screw rod, so this rubber bushing (stator) is a flexible structure.This pump does not need universal shaft coupling, have simple in structure, compact, easy to process, the characteristics that cost significantly reduces, simultaneously rubber bushing does not have glued steel pipe together to make shell, has avoided the defect of coming unstuck.
Below in conjunction with the utility model embodiment's accompanying drawing to the utility model further instruction again.
Fig. 1 is the structural representation of traditional screw pump;
Fig. 2 is the structural representation of the utility model screw pump.
By shown in Figure 2, the utility model screw pump, it directly and motor shaft 1 link, it comprises upper shell 6, screw rod 2, be enclosed within the rubber bushing 41 on the screw rod and be enclosed within lower shell body 31 on the rubber bushing skin, the into deep trouth 42 of a ring-type is cut in the neutral position that one end of this rubber bushing 41 is positioned between axis hole and periphery wall, make rubber bushing be divided into interior jacket layer 43 and jacket layer 44, and on the jacket layer of the rubber bushing 41 that is positioned at same end, extend an integrally formed annular seal pad 45 with suitable thickness.One end of the upper shell 6 of described lower shell body 31 one ends and screw pump is fixed by flange screw by described gasket seal is involutory, and the jacket layer of the other end and rubber bushing keeps certain interval 7.
Claims (1)
1. screw pump, it directly links with the motor shaft, and it comprises upper shell, screw rod, rubber bushing and rubber bushing rigidity coating outward, it is characterized in that:
The into deep trouth of a ring-type is cut in the neutral position that described rubber bushing one end is positioned between axis hole and periphery wall, rubber bushing is divided into interior jacket layer and jacket layer, and on the jacket layer of the rubber bushing that is positioned at same end, extends an integrally formed annular seal pad with suitable thickness;
Described rigidity coating is a lower shell body that is enclosed within on the rubber bushing jacket layer, and an end of one end and upper shell is fixed by flange screw by described gasket seal is involutory, and the jacket layer of the other end and rubber bushing keeps certain interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98224936 CN2345737Y (en) | 1998-08-24 | 1998-08-24 | Screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98224936 CN2345737Y (en) | 1998-08-24 | 1998-08-24 | Screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2345737Y true CN2345737Y (en) | 1999-10-27 |
Family
ID=33975713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98224936 Expired - Lifetime CN2345737Y (en) | 1998-08-24 | 1998-08-24 | Screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2345737Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358833A (en) * | 2013-05-06 | 2016-02-24 | 科尔宾尼安·埃斯纳 | Stator for a feed pump |
| EP3173578A1 (en) * | 2015-11-30 | 2017-05-31 | Brinkmann Pumpen K.H. Brinkmann GmbH & Co. KG | Screw spindle machine |
| CN107336573A (en) * | 2017-05-25 | 2017-11-10 | 中国第汽车股份有限公司 | A kind of three mass suspension systems for chassis vibration damping |
-
1998
- 1998-08-24 CN CN 98224936 patent/CN2345737Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358833A (en) * | 2013-05-06 | 2016-02-24 | 科尔宾尼安·埃斯纳 | Stator for a feed pump |
| CN105358833B (en) * | 2013-05-06 | 2018-04-03 | 科尔宾尼安·埃斯纳 | Stator for a feed pump |
| US10113426B2 (en) | 2013-05-06 | 2018-10-30 | Korbinian Eisner | Stator for an eccentric screw pump |
| EP3173578A1 (en) * | 2015-11-30 | 2017-05-31 | Brinkmann Pumpen K.H. Brinkmann GmbH & Co. KG | Screw spindle machine |
| WO2017092958A1 (en) * | 2015-11-30 | 2017-06-08 | Brinkmann Pumpen K. H. Brinkmann Gmbh & Co. Kg | Threaded spindle machine |
| US10718328B2 (en) | 2015-11-30 | 2020-07-21 | Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg | Threaded spindle machine |
| CN107336573A (en) * | 2017-05-25 | 2017-11-10 | 中国第汽车股份有限公司 | A kind of three mass suspension systems for chassis vibration damping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |