CN201284737Y

CN201284737Y - High-efficiency non-leakage Roots impeller pump

Info

Publication number: CN201284737Y
Application number: CNU2008201734182U
Authority: CN
Inventors: 张海平; 吴哲军; 邱仁江; 荣登峰
Original assignee: SHANDONG YANSHAN PUMPS CO Ltd
Current assignee: SHANDONG YANSHAN PUMPS CO Ltd
Priority date: 2008-10-21
Filing date: 2008-10-21
Publication date: 2009-08-05
Anticipated expiration: 2018-10-21

Abstract

The utility model provides a high-efficiency roots rotor pump without leakage, which comprises a cavity body, wherein, the cavity body comprises a cover plate, a pump body, a bearing gland and a gland. A horizontal bearing in the cavity body is provided with a driving shaft and a driven shaft, the driven shaft is respectively provided with a driving rotor and a driving gearwheel in a key mode in a rotor working cavity and a gearwheel working cavity, and the driven shaft is respectively provided with a driven rotor and a driven gearwheel in a key mode in the rotor working cavity and the gearwheel working cavity. A gap is formed between the driving rotor and the driven rotor, and the driving gearwheel and the driven gearwheel are meshed. The utility model is characterized in that the driving rotor and the driven rotor respectively adopt high- cycloidal rotors; the cavity body is provided with a pressure release cavity between the rotor working cavity and the gearwheel working cavity. As the roots pump adopts the novel and high-efficiency cycloidal rotors, the contour profile is scientific, and the defects of rotation clamping stagnation, vibration, noise and the like caused by engagement interference are avoided. The arranged pressure release cavity reduces the pressure of each sealing component, which avoids the medium leakage, and the property is good.

Description

Efficient nothing is leaked the roots rotor pump

Technical field

The utility model provides a kind of efficient nothing to leak the roots rotor pump, belongs to petroleum production, food chemistry industrial water drainage pump technical field.

Background technique

At present, industrial projects such as domestic a lot of oil extraction, petrochemical industry, papermaking, wholesome food, environmental protection blowdown are energy-efficient according to the environmental requirement demand of State Environmental Protection Administration's energy-saving and emission-reduction, nothing is leaked, free of contamination pipe conveying equipment, but existing equipment all designs because of rotator model and the machining accuracy problem causes pump efficiency not high.Simultaneously their seal form all adopts rubber seal, mechanical seal or dynamic seal, causes dielectric leakage because of in actual use variety of problems is difficult to solution again, and efficient is low, wastes energy befouling environment.Be difficult to reach usage requirement.For solving this difficult problem, take usually to shorten the plant maintenance time, often change air locking.Increase the equipment operation cost thus, reduced system's manufacturing efficiency, improved rate of breakdown greatly, also brought a series of problems such as energy-saving and environmental protection.

The model utility content

The purpose of this utility model provides a kind ofly can overcome above-mentioned defective, transport medium Applicable scope more extensively, the efficient nothing of energy-conserving and environment-protective leaks the roots rotor pump.Its technological scheme is:

Comprise by cover plate, the pump housing, the cavity that bearing gland and gland constitute, horizontal bearing is equipped with driving shaft and driven shaft in the cavity, and driving shaft is being positioned at the working rotor chamber and working gear chamber internal key is equipped with power rotor and driving gear respectively, driven shaft is being positioned at the working rotor chamber and working gear chamber internal key is equipped with driven rotor and driven gear respectively, gapped between power rotor and driven rotor and the pump housing, also gapped between the two, driving gear and driven gear engagement, it is characterized in that: power rotor and driven rotor all adopt high cycloid rotor, two group rotors are identical, the counterrotating campaign is provided with pressure-releasing chamber between inherent working rotor chamber of cavity and the working gear chamber.

Described efficient nothing is leaked the roots rotor pump, driving shaft and driven shaft horizontal bearing are installed in the same longitudinal plane of cavity, and the end that driving shaft closes on cover plate is provided with the rotor pressing plate and compresses, its end ring that leans out cavity is wound with the bearing gland of bearing gland and band seal ring, the end that driven shaft closes on cover plate is provided with the rotor pressing plate and compresses, its the other end shutoff is with bearing gland, and bearing gland is fixed on the gland.

Described efficient nothing is leaked the roots rotor pump, and pressure-releasing chamber is through seal ring and working rotor chamber and the sealing of working gear chamber.

Its working principle is: during work, drive the driving shaft rotation of Roots pump earlier by power plant, driving driven shaft through meshed transmission gear again rotates, and then drive driven rotor rotation, directly act on liquid with the static pressure form, and the squeezing action drain of moving rotor of borrower and driven rotor, opposite side forms low pressure simultaneously, and liquid is sucked continuously.

The utility model compared with prior art has following advantage:

1, because gapped contactless between power rotor and the driven rotor and the pump housing, also gapped between the two contactless, therefore be fit to transfer of highly viscous, high concentration and any medium (material) that contains particle, and can not occur wearing and tearing or the phenomenon of stuck pump because of medium that conveying contains solid particle;

2, owing to contactless between the rotor, smooth surface, wear-resistant, so long-term use also can guarantee its initial designs performance, have and do not have wearing and tearing, running is steady, and noise is low, high efficiency, long characteristic of life-span, the amount of maintenance that has solved existence such as screw pump, reciprocating pump is big, the problem that the life-span is low;

3, owing to be provided with pressure-releasing chamber between working rotor chamber in the Roots pump cavity and the working gear chamber, the high-pressure fluid medium of each rotatable parts clearance leakage obtains decompression through high low pressure self circulatory system during operation, reduced the pressure of each sealed member, avoided the leakage of medium, there is not sealing, do not have and leak, thereby solved the insoluble fluid leakage problems that exists in the industry fed sheet of a media processes such as petrochemical industry, food, medicine, papermaking;

4, because rotor adopts new and effective cycloid rotor, and its external frame molded lines is science more, defectives such as the rotation clamping stagnation of having avoided causing, vibration, noise because of meshing interference;

5, has compact structure, easy for installation, easy to maintenance, clean characteristics such as convenient, need not to dismantle in-and-out pipe during maintenance, only need take off the both replaceable part of end cap, bring great convenience, and this series pump can be just/antiport to the user, and the idle running ability is strong, has solved the situation that conventional pump may be burnt motor because of idle running.

Description of drawings

Fig. 1 is the structural representation of the utility model structure example.

Among the figure: 1, cover plate 2, rotor pressing plate 3, power rotor 4, the pump housing 5, sliding bearing 6, key 7, driving gear 8, driving shaft 9, bearing gland 10, driven rotor 11, driven gear 12, gland 13, driven shaft 14, working rotor chamber 15, working gear chamber 16, pressure-releasing chamber 17, seal ring 18, bearing gland

Embodiment

In the embodiment shown in fig. 1: comprise the cavity that constitutes by cover plate 1, the pump housing 4, bearing gland 11 and gland 12, driving shaft 8 and driven shaft 13 horizontal bearings are installed in the same longitudinal plane of cavity, and the end that driving shaft 8 closes on cover plate 1 is provided with rotor pressing plate 2 it is compressed, its end ring that leans out cavity is wound with the bearing gland 18 of bearing gland 9 and band seal ring 17, the end that driven shaft 13 closes on cover plate 1 is provided with rotor pressing plate 2 it is compressed, its the other end shutoff is with bearing gland 9, and bearing gland 9 is fixed on the gland 12.Driving shaft 8 is being positioned at working rotor chamber 14 and working gear chamber 15 internal keies 6 are equipped with high cycloid power rotor 3 and driving gear 7 respectively, driven shaft 13 is being positioned at working rotor chamber 14 and working gear chamber 15 internal keies 6 are equipped with high cycloid driven rotor 10 and driven gear 11 respectively, gapped between power rotor 3 and driven rotor 10 and the pump housing 4, also gapped between the two, driving gear 7 and driven gear 11 engagements, power rotor 3 and driven rotor 10 structures are identical, the counterrotating campaign, be provided with pressure-releasing chamber 16 between inherent working rotor chamber 14 of cavity and the working gear chamber 15, pressure-releasing chamber 16 is through seal ring 17 and working

rotor chamber

14 and 15 sealings of working gear chamber.

During work, drive driving shaft 8 rotations of Roots pump earlier by power plant, driving driven shaft 13 through meshed transmission gear again rotates, and then drive power rotor 3 and driven rotor 10 backward rotation, form cavity volume, and directly act on liquid, and borrow the squeezing action drain of two group rotors with the static pressure form, opposite side forms low pressure simultaneously, and liquid is sucked continuously.

Claims

1, a kind of efficient nothing is leaked the roots rotor pump, comprise by cover plate (1), the pump housing (4), the cavity that bearing gland (9) and gland (12) constitute, horizontal bearing is equipped with driving shaft (8) and driven shaft (13) in the cavity, and driving shaft (8) is equipped with power rotor (3) and driving gear (7) being positioned at working rotor chamber (14) and working gear chamber (15) internal key (6) respectively, driven shaft (13) is equipped with driven rotor (10) and driven gear (11) being positioned at working rotor chamber (14) and working gear chamber (15) internal key (6) respectively, gapped between power rotor (3) and the driven rotor (10), driving gear (7) and driven gear (11) engagement, it is characterized in that: power rotor (3) and driven rotor (10) all adopt high cycloid rotor, are provided with pressure-releasing chamber (16) between the inherent working rotor chamber (14) of cavity and working gear chamber (15).

2, efficient nothing as claimed in claim 1 is leaked the roots rotor pump, it is characterized in that: driving shaft (8) and driven shaft (13) horizontal bearing are installed in the same longitudinal plane of cavity, and the end that driving shaft (8) closes on cover plate (1) is provided with rotor pressing plate (2) and compresses, its end ring that leans out cavity is wound with the bearing gland (18) of bearing gland (9) and band seal ring (17), the end that driven shaft (13) closes on cover plate (1) is provided with rotor pressing plate (2) and compresses, its the other end shutoff is with bearing gland (9), and bearing gland (9) is fixed on the gland (12).

3, efficient nothing as claimed in claim 1 is leaked the roots rotor pump, it is characterized in that: pressure-releasing chamber (16) is through seal ring (17) and working rotor chamber (14) and working gear chamber (15) sealing.