CN202971170U - Special three-screw pump for immersed lubrication - Google Patents
Special three-screw pump for immersed lubrication Download PDFInfo
- Publication number
- CN202971170U CN202971170U CN 201220686934 CN201220686934U CN202971170U CN 202971170 U CN202971170 U CN 202971170U CN 201220686934 CN201220686934 CN 201220686934 CN 201220686934 U CN201220686934 U CN 201220686934U CN 202971170 U CN202971170 U CN 202971170U
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- pump
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- screw rod
- pump body
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Abstract
The utility model relates to a special three-screw pump for immersed lubrication. The special three-screw pump comprises a pump body, a pump connecting frame, a lining, a driving screw rod and two driven screw rods. The special three-screw pump is characterized in that a groove is formed in one end of the driving screw rod; one ends of the two driven screw rods are provided with bosses meshed with the groove of the driving screw rod; the pump body is also provided with a pump outlet; the lower end of the pump body is provided with a pump inlet; the side end of the pump body is provided with a front cover directly communicated with an oil return hole of an oil tank; and the pump connecting frame is provided with an oil filling cup for mechanically sealing and lubricating the upper part of the pump body. The special three-screw pump has the advantages of not only simplifying the structure of the pump body, saving the space, improving the whole assembling precision and facilitating dismounting, mounting and maintenance of the pump body, but also reducing the space occupied by the pump body, being applied to more fields and saving a great number of funds for users.
Description
Technical field
The utility model belongs to industrial pump and makes the field, particularly relates to the special-purpose three screw pump of a kind of submersed lubrication.
Background technique
Three screw pump is as the power source of liquid, and extensively installation is matched in all kinds of lubrication statioies, hydraulic system and various technique cooling system, is applied to the numerous areas such as boats and ships, metallurgy, iron and steel, petrochemical industry, electric power and machining.Use for many years facts have proved, three screw pump all has significant advance than existing other positive displacement pump in all many-sides such as economic benefit, delivery quality, running life and maintainings.In prior art, the active screw rod of three screw pump and driven screw rod all are mounted in the lining of the pump housing, and two driven screw rods need to realize axial equilibrium of forces by balance set, initiatively bottom screw rod, the back-up ring that prevents driven screw axial play are housed; The export and import of the pump housing is connected with pipeline by the flange that is arranged on the pump housing respectively.The three screw pump volume of said structure is large, and complex structure is difficult to guarantee high assembly precision, also is not easy to the dismounting maintenance of pump simultaneously.In addition, the user easily is subject to the restriction of place or industrial and mineral condition in use.
Summary of the invention
The utility model provides a kind of compact structure, saves the space for solving the technical problem that exists in known technology, and be convenient to assemble, the special-purpose three screw pump of submersed lubrication that reliability is high.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
The special-purpose three screw pump of submersed lubrication, comprise the pump housing, pump link press span, lining, be arranged on active screw rod and driven screw rod in the pump housing, described active screw rod one end is shaped with groove, two driven screw rod one ends are shaped with the boss that is meshed with the active screw flutes, also be provided with pump discharge on the described pump housing, be shaped with pump inlet in pump housing underpart, pump housing side is equipped with the protecgulum that is shaped with direct connection tank drainback hole on it, is equipped with on described pump link press span for the lubricated priming cup of pump top mechanical seal.
The utility model can also adopt following technological scheme:
The Seal cage of described protecgulum has been connected by screw sealing gland.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, being about to active screw rod and driven screw rod is directly installed on the interior lining of the pump housing, and pump discharge and pump inlet are set directly on the pump housing, the parts such as balance set, back-up ring have been saved, so not only can simplify pump body structure, saved the space, improve whole assembly precision, be convenient to the dismounting maintenance of pump, but also can dwindle taking up room of pump, applicable place scope is wide, and can be the user and save substantial contribution.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, the pump housing; 2, lining; 3, active screw rod; 3-1, groove; 4, driven screw rod; 4-1, boss; 5, protecgulum; 6, bearing; 7, sealing; 8, sealing gland; 9, screw; 10, screw; 11, screw; 12, pump link press span; 13, priming cup; 14, oil filler pipe; 15, pump discharge.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
See also Fig. 1, the special-purpose three screw pump of submersed lubrication comprises the pump housing 1, pump link press span 12, is installed in pump housing neck bush 2, is arranged on active screw rod 3 and driven screw rod 4 in the pump housing.Described active screw rod one end is shaped with groove 3-1, and two driven screw rod one ends are shaped with the boss 4-1 that is meshed with the active screw flutes, in the present embodiment, initiatively in screw flutes, bearing 6 and mechanical seal 7 is housed, to realize driven screw rod 4 axially locating and balance.Also be provided with pump discharge on the described pump housing, pump discharge is taken over 15 with pump discharge and is connected, then connecting pipeline.Be shaped with pump inlet in pump housing underpart, pump housing side is equipped with and is shaped with the protecgulum 5 that seals on it, is shaped with direct connection pump housing spill port on protecgulum, and the Seal cage of protecgulum is connected with sealing gland 8 by screw 11.Be equipped with on described pump link press span 12 for the lubricated priming cup 13 of pump top mechanical seal, pump link press span 12 is used for pump is fixed on fuel tank, and the priming cup that is arranged on the pump link press span passes through oil filler pipe 14 to the Seal cage oiling.
Working principle of the present utility model is:
Before pump startup, first open the switch on priming cup, give pump seal chamber oiling, after pump startup, along with the foundation of pressure, the oil of Seal cage returns annotates priming cup, and priming cup is filled with the switch of closing priming cup after oil, in order to using next time starting up again.
Claims (2)
1. the special-purpose three screw pump of a submersed lubrication, comprise the pump housing, pump link press span, lining, be arranged on active screw rod and driven screw rod in the pump housing, it is characterized in that: described active screw rod one end is shaped with groove, two driven screw rod one ends are shaped with the boss that is meshed with the active screw flutes, also be provided with pump discharge on the described pump housing, be shaped with pump inlet in pump housing underpart, pump housing side is equipped with the protecgulum that is shaped with direct connection tank drainback hole on it, is equipped with on described pump link press span for the lubricated priming cup of pump top mechanical seal.
2. the special-purpose three screw pump of submersed lubrication according to claim 1, it is characterized in that: the Seal cage of described protecgulum has been connected by screw sealing gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686934 CN202971170U (en) | 2012-12-13 | 2012-12-13 | Special three-screw pump for immersed lubrication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686934 CN202971170U (en) | 2012-12-13 | 2012-12-13 | Special three-screw pump for immersed lubrication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971170U true CN202971170U (en) | 2013-06-05 |
Family
ID=48512254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686934 Expired - Fee Related CN202971170U (en) | 2012-12-13 | 2012-12-13 | Special three-screw pump for immersed lubrication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898577A (en) * | 2021-11-04 | 2022-01-07 | 北京君岳伟信工程技术有限公司 | Screw pump and intelligent lubricating oil filling device |
-
2012
- 2012-12-13 CN CN 201220686934 patent/CN202971170U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898577A (en) * | 2021-11-04 | 2022-01-07 | 北京君岳伟信工程技术有限公司 | Screw pump and intelligent lubricating oil filling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151213 |
|
| EXPY | Termination of patent right or utility model |