CN101029641A

CN101029641A - Large-flow high-pressure pump

Info

Publication number: CN101029641A
Application number: CN 200710057070
Authority: CN
Inventors: 刘爱诗
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-05
Filing date: 2007-04-05
Publication date: 2007-09-05

Abstract

The piston rotor and sealed rotor in large capacity high-lift pump mutual roll operation. There is raised jugged piston on piston rotor and jugged flute which mesh with jugged piston on sealed rotor. The molded lines of jugged flute is the motion trace of the tip of jugged piston on the sealed rotor when these two rotor mutual roll operation. The molded line of jugged piston is the motion trace of the lip of the jugged flute on the piston rotor in the same operative condition. Therefore, between tooth top and groove face and between solt's two lips and tooth surface keep the state of contact station, during the mesh turn of flute and tooth. So it can meet the need of hermetic closure. The circumference surface of two rators have the effect of hermetic closure by roll contact when they one another turning. large capacity high-lift pump not only has the centrifugal pump's advantage of large capacity, high rotate speed and balanced operation, but also the plunger pump's high pressure. And it can improve the transformation rate of energy, be propitious to economize compression pump's drive energy.

Description

Large-flow high-pressure pump

Technical field

The invention belongs to a kind of fluid compressing device, be specially a kind of rotary compressor pump.

Background technique

Existing compressor pump all exists big flow and the two deficiency that can not have both simultaneously of high pressure, such as, pressure is lower because minimum cylinder volume is constant for centrifugal pump, gear pump is less because of the less flow of minimum cylinder volume, reciprocating piston pump is bigger because of the reciprocal inertia force of piston, restrict its rotating speed and improved, caused flow limited.The pump of other form is also all like this.

Summary of the invention

The objective of the invention is to overcome the deficiency of above-mentioned compressor pump, provide a kind of not only flow the big but also high fluid compressor pump of pressure.

Embodiment of the present invention are: a pair of rotor is installed in the pump housing, is respectively piston rotary and canned rotor, two rotors axle by separately is installed on the pump housing and by linkage gear does mutual rolling running.The tooth-shaped piston of projection is arranged on piston rotary, the profile of tooth groove that is meshed with tooth-shaped piston is arranged on canned rotor.When two rotor linkage operations, tooth-shaped piston is meshed with the profile of tooth groove, to avoid mutual interference.The molded lines of profile of tooth groove is that this a pair of rotor rolls when turning round mutually, and tooth-shaped piston withstands on the movement locus on the canned rotor; The molded lines of tooth-shaped piston is under same operating condition, the movement locus of the bicker of flute profile groove on piston rotary.Therefore, in tooth and rotation that groove is meshed, two bickers and the flank of tooth of tooth top and groove face, groove remain contact condition, thereby satisfy seal request.The circumferential surface of two rotors is done the contact of rolling and is sealed when rotating mutually.Two rotors are divided into suction chamber and extrude the chamber by the position that the is in contact with one another inner chamber with the pump housing, each chamber respectively with the pump housing on corresponding suction port and extruding mouthful communicate.During the rotor running, the suction chamber volume at tooth-shaped piston rear increases and fluid is sucked, and the extrusion chamber volume in tooth-shaped piston the place ahead reduces and fluid is extruded.

The existing centrifugal pump flow of the present invention is big, rotating speed is high and the advantage stably that turns round, and has the high advantage of plunger pump pressure again, can also improve the conversion ratio of energy, helps saving the driving energy of compressor pump.

Description of drawings

Fig. 1 pump structure figure

1. piston rotary 2. tooth-shaped piston 3. extrude mouthful molded lines A-tooth end B of the molded lines S-tooth-shaped piston of 4. canned rotors, 5. profile of tooth grooves, 6. suction ports, 7. pump housings L-profile of tooth groove, the bicker point of C-groove

Fig. 2 pump work procedure chart

A. teeth groove separation graph b. sealing schematic representation c. teeth groove engagement figure d. teeth groove is near Fig. 8. and suction tank 9. extrudes groove 1-tooth-shaped piston 1 2-tooth-shaped piston 2

Fig. 3 tooth top sealed picture

7. the pump housing 10. diaphragm seals 11. Packing springs

Fig. 4 notch sealed picture

12. seal groove 13. Packing springs 14. diaphragm seals

Fig. 5 sealing plate installation diagram

15. sealing plate 16. mounting grooves

Fig. 6 sealing plate structure figure

15. sealing plate 17. air vents 18. flute profile expansion plates 19. coil tension springs 20. Packing springs 21. back pressure air chambers

Fig. 7 end face seal figure

7. the pump housing 22. end face seal dishes 23. end caps 24. oil leabs 25. chimbs 26. seal rings 27. Packing springs 28. back pressure air chambers 29. seal rings

Embodiment

The invention will be further described below in conjunction with drawings and Examples.

The pump housing is equipped with a pair of rotor in (7), sees Fig. 1, is respectively piston rotary (1) and canned rotor (4), and two rotors axle by separately is installed on the pump housing and by linkage gear does mutual rolling running.The tooth-shaped piston (2) of projection is arranged on piston rotary, the profile of tooth groove (5) that is meshed with tooth-shaped piston is arranged on canned rotor.The molded lines L of profile of tooth groove is that this a pair of rotor rolls when turning round mutually, the movement locus of tooth-shaped piston top A point on canned rotor; The molded lines S of tooth-shaped piston is under same operating condition, the bicker B point of flute profile groove and the movement locus of C point on piston rotary.Therefore, in tooth and rotation that groove is meshed, two bickers and the flank of tooth of tooth top and groove face, groove remain contact condition, thereby satisfy seal request.The pump housing is provided with suction port (6) and extrudes mouthful (3), communicates with suction chamber and extrusion chamber respectively.

Working procedure of the present invention is seen Fig. 2.Piston rotary clockwise rotates, and under the drive of linkage gear, canned rotor rotates counterclockwise, and two rotors make the circumferential surface do rolling running mutually of the two by the engagement of tooth and groove.When tooth-shaped piston 1 is left teeth groove, see Fig. 2 a, fluid enters between teeth groove by suction port and suction tank (8).Along with the running of rotor, the volume at tooth-shaped piston 1 rear increases, and fluid is sucked through suction port; The volume in tooth-shaped piston 2 the place aheads reduces, and fluid is compressed and is forced out through extruding mouth, sees Fig. 2 b, and at this moment, the rolling contact section position of the tooth top of two pistons and two rotors seals.When tooth-shaped piston 1 arrived the vertical position, tooth-shaped piston 2 entered in the teeth groove, sees Fig. 2 c, and the place ahead of tooth-shaped piston 1 becomes the extrusion chamber.When tooth-shaped piston 1 rotates a circle when entering teeth groove once more, see Fig. 2 d, the fluid in the teeth groove mouthful is forced out through extruding groove (9) and extruding.Rotor rotates a circle, and two tooth-shaped piston are respectively finished a circulation.

When fluid is that gas is, rotor radially, axially and the circumferential surface that rolls mutually of two rotors also can be provided with seal arrangement.

The seal arrangement at tooth-shaped piston top is seen Fig. 3.Top in tooth-shaped piston is provided with seal groove, and diaphragm seal (10) is housed in the groove, and Packing spring (11) is equipped with in its underpart.Diaphragm seal seals on the inwall of pressing to the pump housing (7) under the effect of spring.

The seal arrangement of profile of tooth groove bicker is seen Fig. 4, for the diaphragm seal that prevents this place is deviate from its seal groove at the active section that does not seal, can adopt section configuration is trapezoidal or leg-of-mutton diaphragm seal (14) and seal groove (12), the exit width of seal groove is narrower than the width of diaphragm seal bottom to be deviate to stop it, is provided with Packing spring (13) in the bottom of diaphragm seal.

Fig. 5 and Fig. 6 are seen in the sealing of rotor circumference face, are back pressure air chamber sealing configuration herein.Be provided with sealing plate (15) on the circumferential surface of tooth-shaped piston rotor, it is shaped as the cylndrical surface.Root in tooth-shaped piston is provided with mounting groove (16), sealing plate two ends be installed in respectively in the mounting groove of two tooth-shaped piston roots.Sealing plate the end flute profile expansion plate (18) is housed, be provided with coil tension spring (19) in its groove, when expanding with heat and contract with cold its end face is sealed with convenient sealing plate.In the back pressure air chamber (21) at the sealing plate back side Packing spring (20) is housed.Sealing plate when sealing, the mounting groove of tooth-shaped piston root do not limit sealing plate move, sealing plate is pressed on the canned rotor surface that is in contact with it by the Packing spring at its back side, plays the rolling seal effect.Utilize sealed pressurized gas to sealing plate the back side apply back pressure and can improve sealing effect.For this reason, be provided with the air vent (17) that leads to the back pressure air chamber at the root of tooth-shaped piston one side, the high pressure that remains pressurized gas plays the back pressure effect, thereby effectively guarantees sealing effect.

Fig. 7 is seen in the sealing of rotor axial, and seal arrangement herein also is the back pressure air chamber structure.Be provided with end face seal dish (22) at the two ends of rotor, the sealing dish can be at pump body inner shaft to moving.The outside of seal disc is pump housing end cap (23), and end cap is fixed on the pump housing (7), forms sealing back pressure air chamber (28) between end cap and seal disc, and the back pressure air chamber is by seal ring (29) sealing that is located at place, seal disc outer.Be provided with Packing spring (27) in the back pressure air chamber, this spring is pressed on seal disc and plays seal action on the rotor end-face.The back pressure air chamber can communicate with the extrusion chamber by the vent on the seal disc.Because what whole back pressure air chamber was full of all is pressurized gas, helps improving the sealing effect than large end face.In order to improve the sealability of end face, the sealing part of each rotor end-face is equipped with chimb (25), which is provided with seal ring (26).In order to improve the wear resistance of sealing surface, can also be lubricated sealing surface by rotor shaft and epitrochanterian oil leab (24).

Claims

1. large-flow high-pressure pump, it is characterized in that being equipped with in the pump housing piston rotary and canned rotor, the running of rolling mutually of two rotors, the tooth-shaped piston that projection is arranged on the piston rotary, the profile of tooth groove that is meshed with tooth-shaped piston is arranged on the canned rotor, the molded lines of profile of tooth groove is that this a pair of rotor rolls when turning round mutually, tooth-shaped piston withstands on the movement locus on the canned rotor, the molded lines of tooth-shaped piston is under same operating condition, the movement locus of the bicker of flute profile groove on piston rotary, two rotors are divided into suction chamber and extrude the chamber by the position that the is in contact with one another inner chamber with the pump housing, each chamber respectively with the pump housing on corresponding suction port and extruding mouthful communicate.

2. large-flow high-pressure pump according to claim 1 is characterized in that tooth-shaped piston top and the bicker of profile of tooth groove are provided with diaphragm seal, and the end face of rotor is provided with seal disc, and the circumferential surface of piston rotary is provided with sealing plate.