阅读说明：本技术 双联偏心滑片泵 (Duplex eccentric sliding vane pump ) 是由 颜景义 于 2021-07-15 设计创作，主要内容包括：本发明为双联偏心滑片泵,涉及油泵领域。技术特征包括两组防撞击驱动结构,两组所述防撞击驱动结构分别对应设置在所述转子中的所述左转子和所述右转子上、以驱动所述叶片滑动于所述左转子和所述右转子上；所述分流套上设有密封结构,通过所述密封结构阻断所述分流套左右两个泵室的液体互通。防撞击驱动结构中通过驱动环与叶片之间的配合,提高叶片的耐磨性又避免叶片因高速摩擦及撞击产生火花引发系统的燃爆事故,通过密封结构有效阻断两个泵室的液体互通,又避免因主轴悬点过长产生的径向跳动故障,提高了泵运行的稳定性使密封更为牢靠。(The invention discloses a duplex eccentric sliding vane pump, and relates to the field of oil pumps. The anti-collision driving structure is characterized by comprising two groups of anti-collision driving structures which are respectively and correspondingly arranged on the left rotor and the right rotor in the rotors so as to drive the blades to slide on the left rotor and the right rotor; and the flow dividing sleeve is provided with a sealing structure, and the sealing structure blocks the liquid intercommunication of the left pump chamber and the right pump chamber of the flow dividing sleeve. The anti-collision driving structure improves the wear resistance of the blades and avoids the system explosion accidents caused by sparks generated by the blades due to high-speed friction and collision through the matching between the driving ring and the blades, effectively blocks the liquid intercommunication of the two pump chambers through the sealing structure, avoids the radial jumping fault generated by overlong suspension point of the main shaft, and improves the stability of the operation of the pump so as to ensure that the sealing is more firm.)

1. The duplex eccentric sliding vane pump comprises a radial pump body (1), wherein a rotor is arranged on a main shaft (4) in the pump body (1), a left stator (2) and a right stator (3) which are opposite in eccentricity are respectively arranged in a pump cavity, a left rotor (5) and a right rotor (6) are arranged on the corresponding main shaft (4), and the left stator (2) and the right stator (3) are separated by a shunting sleeve (7) sleeved on the main shaft (4); the outlets of pump cavities where the left and right stators are located are finally communicated with a pump body discharge port (8), and the pump cavity of the left stator is communicated with a pump body suction port (9); the flow dividing sleeve (7) is a flat hollow body, the end of the diameter of the flow dividing sleeve (7) is provided with an inlet and an outlet, the inlet of the flow dividing sleeve (7) is communicated with a pump body suction inlet (9), and the outlet of the flow dividing sleeve (7) is communicated with a right stator pump cavity suction inlet; wear-resistant liners (10) are arranged on two sides of the flow dividing sleeve (7); the pump body (1) is respectively provided with a suction inlet clapboard and a discharge outlet clapboard in a suction inlet (9) and a discharge outlet (8); the central line of the outlet of the pump body (1) passes through the axis of the rotor spindle (4), and the overflowing slotted hole of the wear-resistant liner (10) is an inclined plane or a cambered surface at the outlet of the pump body (1); the anti-collision device is characterized by further comprising two groups of anti-collision driving structures, wherein the two groups of anti-collision driving structures are respectively and correspondingly arranged on the left rotor (5) and the right rotor (6) of the rotors so as to drive the blades (11) to slide on the left rotor (5) and the right rotor (6);

and the flow dividing sleeve (7) is provided with a sealing structure, and the sealing structure blocks the liquid intercommunication of the left pump chamber and the right pump chamber of the flow dividing sleeve (7).

2. The twin eccentric sliding vane pump according to claim 1, wherein the anti-collision driving structure comprises a driving ring (12);

two end faces of the left rotor (5) and the right rotor (6) are grooves (13) for allowing the driving ring (12) to run.

3. The twin eccentric sliding vane pump according to claim 2, wherein the blades (11) on the left rotor (5) and the right rotor (6) are driven to reciprocate by the outer diameters of the two sets of driving rings (12) in the two sets of anti-collision driving structures.

4. The twin eccentric sliding vane pump according to claim 1, characterized in that the sealing structure comprises sealing sleeves (14) arranged at both ends of the inner bore of the flow dividing sleeve (7);

the sealing sleeve (14) is positioned between the flow dividing sleeve (7) and the main shaft (4).

5. The twin eccentric sliding vane pump according to claim 1, wherein the oil sucking and discharging flow passing holes of the left stator (2) and the right stator (3) are symmetrical 180 degrees and respectively correspond to the flow passing channel of the pump body (1), and the liquid is pressurized by the suction side pump cavity and then is converged into the output pipeline through the flow guide partition plate of the pump body outlet.

Technical Field

The invention relates to the technical field of oil pumps, in particular to a duplex eccentric sliding vane pump.

Background

The oil pump is mainly applied to the petrochemical industry, and can meet the requirements of conveying high-viscosity and mixed conveying engineering containing particle impurities and oil, water and steam media to research and develop a novel pump product.

In the prior art, chinese patent discloses a utility model patent with the patent name of a duplex eccentric pump, and the patent number thereof is CN201420592478.3, and relates to an oil pump, which is mainly used for the duplex eccentric pump for conveying high-viscosity super heavy oil medium on the ground of an oil field, and is particularly suitable for the mixed conveying of oil gas and oil water. The central line of the outlet of the pump body passes through the axis of the rotor spindle, and the overflowing slotted hole of the wear-resistant liner is an inclined plane or a cambered surface at the outlet of the pump body. The center of the outlet of the pump body passes through the axis of the rotor spindle, so that the pump is convenient to install and disassemble on site, the overflowing space of the oil discharging side of the pump body is effectively enlarged, and the defect of unsmooth oil discharging is fundamentally overcome. The overflow slot hole of the wear-resistant liner is an inclined plane or a cambered surface at the outlet of the pump body, so that liquid can be smoothly discharged, no vortex is generated, noise is avoided, and the structure is more reasonable.

However, in the above patent, the oil inlet and outlet holes of the left and right stators are respectively corresponding to the oil suction and outlet channels of the pump body, but the contact position between the shunting sleeve and the pump shaft causes the fluid communication between the left and right pump chambers due to the overlarge gap, which affects the pump flow and the insufficient working pressure, so that the pump efficiency is reduced. The sealing point of the original pump main shaft is manufactured by adopting 40Cr material heat treatment processing, and the normal production of the system is influenced by the oil leakage fault generated by the abrasion of the surface of the shaft neck due to the continuous operation of the shaft neck and the sealing element. Meanwhile, the alloy steel material of the original blade generates sparks due to abrasion in operation and impact between the blade and the inner diameter of the stator, so that the explosion accident is caused.

Disclosure of Invention

The invention aims to solve the technical problems and provides a duplex eccentric sliding vane pump.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the duplex eccentric sliding vane pump comprises a radial pump body, wherein a main shaft in the pump body is provided with a rotor, a left stator and a right stator which are opposite in eccentricity are respectively arranged in a pump cavity, the main shaft is correspondingly provided with the left rotor and the right rotor, and the left stator and the right stator are separated by a shunt sleeve sleeved on the main shaft; the outlets of pump cavities where the left stator and the right stator are located are communicated with the discharge port of the pump body finally, and the pump cavity of the left stator is communicated with the suction port of the pump body; the flow dividing sleeve is a flat hollow body, the diameter end of the flow dividing sleeve is provided with an inlet and an outlet, the flow dividing sleeve opening is communicated with a suction inlet of the pump body, and the outlet of the flow dividing sleeve is communicated with a suction inlet of a pump cavity of the right stator; wear-resistant liners are arranged on two sides of the shunt sleeve; the pump body is provided with a suction inlet clapboard and a discharge outlet clapboard in the suction inlet and the discharge outlet respectively; the central line of the outlet of the pump body passes through the axis of the rotor spindle, and the overflowing slotted hole of the wear-resistant liner is an inclined plane or a cambered surface at the outlet of the pump body; the left rotor and the right rotor in the rotors are both provided with blades in a telescopic mode, and the anti-collision device further comprises two groups of anti-collision driving structures which are respectively and correspondingly arranged on the left rotor and the right rotor in the rotors so as to drive the blades to slide on the left rotor and the right rotor;

and the flow dividing sleeve is provided with a sealing structure, and the sealing structure blocks the liquid intercommunication of the left pump chamber and the right pump chamber of the flow dividing sleeve.

Preferably, the impact resistant drive structure comprises a drive ring;

both end faces of each of the left and right rotors among the rotors are grooves for allowing the driving ring to run.

Preferably, the blades on the left rotor and the right rotor are driven to do reciprocating telescopic motion by the outer diameters of the two groups of driving rings in the two groups of anti-collision driving structures respectively.

Preferably, the sealing structure comprises sealing sleeves arranged at two ends of an inner hole of the flow dividing sleeve;

the sealing sleeve is positioned between the flow dividing sleeve and the main shaft.

Preferably, the oil sucking and discharging overflowing holes of the left stator and the right stator are symmetrical 180 degrees and respectively correspond to the overflowing channel of the pump body, and liquid is pressurized by the suction side pump cavity and then flows into the output pipeline through the flow guide partition plate of the outlet of the pump body.

The invention has the following beneficial effects:

according to the duplex eccentric sliding vane pump, the driving ring is matched with the blades in the anti-collision driving structure, so that the abrasion resistance of the blades is improved, the system explosion accidents caused by sparks generated by high-speed friction and collision of the blades are avoided, the liquid intercommunication of the two pump chambers is effectively blocked through the sealing structure, the radial jumping fault generated by overlong suspension points of the main shaft is avoided, and the stability of the operation of the pump is improved, so that the sealing is firmer.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of a dual eccentric sliding vane pump according to the present invention;

FIG. 2 is a schematic diagram of the right stator and the right rotor of the twin eccentric sliding vane pump according to the present invention;

FIG. 3 is a schematic structural view of an anti-collision driving structure of the twin eccentric sliding vane pump according to the present invention;

fig. 4 is a schematic structural diagram of a driving ring of the twin eccentric sliding vane pump of the present invention.

The reference numerals in the figures denote:

1. a radial pump body; 2. a left stator; 3. a right stator; 4. a main shaft; 5. a left rotor; 6. a right rotor; 7. a flow dividing sleeve; 8. a pump body discharge port; 9. a pump body suction inlet; 10. a wear-resistant liner; 11. a blade; 12. a drive ring; 13. a groove; 14. and (5) sealing the sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the duplex eccentric sliding vane pump includes a radial pump body 1, a rotor is arranged on a main shaft 4 in the pump body 1, a left stator 2 and a right stator 3 with opposite eccentricity are respectively arranged in the pump cavity, a left rotor 5 and a right rotor 6 are arranged on the corresponding main shaft 4, and the left stator 2 and the right stator 3 are separated by a shunting sleeve 7 sleeved on the main shaft 4; the outlets of pump cavities where the left stator and the right stator are located are communicated with a pump body discharge port 8 finally, and the pump cavity of the left stator is communicated with a pump body suction port 9; the flow dividing sleeve 7 is a flat hollow body, the end of the diameter of the flow dividing sleeve 7 is provided with an inlet and an outlet, the inlet of the flow dividing sleeve 7 is communicated with a pump body suction inlet 9, and the outlet of the flow dividing sleeve 7 is communicated with a right stator pump cavity suction inlet; wear-resistant liners 10 are arranged on two sides of the flow dividing sleeve 7; the pump body 1 is provided with a suction inlet clapboard and a discharge outlet clapboard in the suction inlet 9 and the discharge outlet 8 respectively; the central line of the outlet of the pump body 1 passes through the axis of the rotor spindle 4, and the overflow slot hole of the wear-resistant liner 10 is an inclined plane or a cambered surface at the outlet of the pump body 1; the left rotor 5 and the right rotor 6 in the rotor are both provided with blades 11 in a telescopic manner, and the anti-collision device further comprises two groups of anti-collision driving structures which are respectively and correspondingly arranged on the left rotor 5 and the right rotor 6 in the rotor so as to drive the blades 11 to slide on the left rotor 5 and the right rotor 6;

the flow dividing sleeve 7 is provided with a sealing structure, and the sealing structure blocks the liquid intercommunication of the left pump chamber and the right pump chamber of the flow dividing sleeve 7.

Specifically, a left rotor 5 and a right rotor 6 in the rotor slide on the left rotor 5 and the right rotor 6 through a matched driving blade 11 between an anti-collision driving structure and the blades, the abrasion resistance of the blades is improved, the system explosion accidents caused by sparks generated by the blades due to high-speed friction and collision are avoided, the liquid intercommunication of a left pump chamber and a right pump chamber of a shunting sleeve 7 is effectively blocked through a sealing structure, the radial jumping fault generated by overlong suspension points of a main shaft is avoided, and the running stability of the pump is improved, so that the sealing is firmer.

Further, the anti-collision drive structure includes a drive ring 12;

the two end faces of the left rotor 5 and the right rotor 6 in the rotor are grooves 13 for allowing the driving ring 12 to run.

Specifically, the left rotor 5 and the right rotor 6 in the rotor drive the blades 11 to slide on the left rotor 5 and the right rotor 6 through the matching between the driving ring 12 and the blades 11 in the anti-collision driving structure, that is, the blades 11 on the left rotor 5 and the right rotor 6 are driven to do reciprocating telescopic motion, so that the wear resistance of the blades 11 is improved, and the system explosion accident caused by sparks generated by the blades 11 due to high-speed friction and collision is avoided.

Further, the blades 11 on the left rotor 5 and the right rotor 6 are driven to reciprocate by the outer diameters of the two sets of driving rings 12 in the two sets of anti-collision driving structures.

Further, the sealing structure comprises sealing sleeves 14 arranged at two ends of an inner hole of the flow dividing sleeve 7;

the sealing sleeve 14 is located between the splitter sleeve 7 and the main shaft 4.

Specifically, the material of the sealing sleeve 14 is polytetrafluoroethylene and graphite, and the structure has the advantages that the liquid intercommunication of the left pump chamber and the right pump chamber of the shunting sleeve 7 is effectively blocked, the radial run-out fault caused by overlong suspension points of the main shaft is avoided, and the running stability of the pump is improved, so that the sealing is firmer.

Furthermore, the oil suction and discharge overflowing holes of the left stator 2 and the right stator 3 are symmetrical 180 degrees and respectively correspond to an overflowing channel of the pump body 1, and liquid is pressurized by a suction side pump cavity and then is converged into an output pipeline through a flow guide partition plate of a pump body outlet.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.