CN1128928C - Rotor-type piston pump - Google Patents
Rotor-type piston pump Download PDFInfo
- Publication number
- CN1128928C CN1128928C CN 02112763 CN02112763A CN1128928C CN 1128928 C CN1128928 C CN 1128928C CN 02112763 CN02112763 CN 02112763 CN 02112763 A CN02112763 A CN 02112763A CN 1128928 C CN1128928 C CN 1128928C
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- CN
- China
- Prior art keywords
- rotor
- pump
- piston
- eccentric shaft
- valve
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- Expired - Fee Related
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- Details Of Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a volume fluid pump, particularly to a pump of which the volume changes by the aid of the motion of a piston. The volume fluid pump comprises a pump body and a piston, wherein the pump body is divided into an inlet chamber and an outlet chamber, one end of the pump body is provided with a rotor driven by a transmission shaft, and the other end of the pump body is provided with an eccentric shaft; the rotor is provided with a radial hole and at least one piston, and the piston is hinged with the eccentric shaft by a connecting rod. Since the piston in the present invention makes a straight reciprocating motion in the radial hole of the rotor and makes a rotary motion along with the rotor simultaneously, the conveyed medium is sucked in from the inlet of the pump body and extruded from the outlet through the volume change so as to overcome the defects of loose structure, untight sealing, operational noise of the valve, impact caused by the opening and the closing of the valve, operational clearance caused by the valve, which result from the arrangement of the valve; thus, the volume fluid pump has the advantages of compact structure and few oversight links, and the speed of the pump is greatly increased; meanwhile, since the piston makes a reciprocating motion in the rotating process, the present invention has the advantages of small impact, stable operation of the entire pump, and low noise.
Description
Technical field
The present invention relates to a kind of displacement fluid pump, especially a kind of pump that produces volume-variation by piston motion.
Background technique
Reciprocating pump is one of modal displacement pump, its typical structure as shown in Figure 1, piston does reciprocating linear motion under the driving of brace and connecting rod framework.When moving downward as shown in the figure, it is big that pump housing upper volume becomes, and lower volume diminishes; Upper left valve of result and bottom right valve are closed, and the lower-left valve is opened feed liquor, and upper right valve is opened fluid.When piston moved upward, situation was just in time opposite.Because the reciprocating pump drive mechanism is simple, self-priming performance is good during work, therefore is used widely.Yet its shortcoming is also very outstanding: (1) valve system is provided with complexity, leaks easily, influences the efficient of pump, especially carries viscosity fluid big or that impurity is more all the more so; Have greater impact when (2) valve opens and closes motion, noise and vibration are obvious, and valve face forms wear out failure easily.(3) because the hysteresis quality of the relative piston movement speed of keying speed of valve makes the reciprocating frequency of pump be restricted, influence the motion speed (instantaneous) of pump, thereby the row's ability of deciding of pump is restricted.(4) because the setting of valve makes the existing work clearance of pump, influence the working efficiency of pump when the conveying gas medium.
Summary of the invention
The objective of the invention is to: at the shortcoming that above-mentioned reciprocating pump exists, propose a kind of good seal performance, running steadily, the rotor-type piston pump of high working efficiency.
In order to reach above purpose, rotor-type piston pump of the present invention comprises the pump housing (2), piston (3), it is characterized in that: the described pump housing (2) is separated into into and out of two chambers, one end is equipped with the rotor (7) that transmission shaft (8) drives, the other end is equipped with eccentric shaft (5), be shaped at least one place radial hole on the described rotor (7), piston (3) is housed in the hole, described piston (3) is hinged by connecting rod (4) and eccentric shaft (5).
Because piston, connecting rod and eccentric shaft among the present invention have constituted connecting rod in fact, therefore when transmission shaft drives rotor (7) rotation, under the constraint of eccentric shaft (5), piston in rotor (7) radial hole when rotating thereupon, also make linear reciprocating motion radially, make the rotor radial hole produce the periodically variation of volume in the space of pistons end, the result cooperates with two isolated chamber of the pump housing, fluid with import sucks continually, extrudes from outlet.Because the present invention has broken through the mode of operation that piston only does reciprocating linear motion in the existing reciprocating pump, and the mode that is superimposed upon on rotatablely moving with piston linear reciprocating motion replaces, utilize rotor body (7) to cooperate, finish the suction and the discharge of fed sheet of a media with the cycle of the pump housing two separate cavities.Therefore, finished entire work process removing under the condition of any control valve unit.Obviously, so, rotor-type piston pump of the present invention has been avoided the existing above-mentioned shortcoming of existing reciprocating piston pump at work, has given full play to the task performance of piston.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the schematic diagram of mechanism of existing reciprocating pump.
Fig. 2 is the structural representation of one embodiment of the invention.
Fig. 3 is the end-face structure schematic representation of Fig. 2.
Fig. 4 (1)---(8) are Fig. 2 embodiment's working procedure schematic representation.
Embodiment
Embodiment
The rotor-type piston pump of present embodiment mainly is made up of supporting cover 13, pump protecgulum 14 before relief valve assembly 1, the pump housing 2, piston 3, connecting rod 4, eccentric shaft 5, wrist pin 6, rotor 7, transmission shaft 8, pump postoperculum 9, pump coupling 10, the rotor as shown in Figures 2 and 3.
The pump housing 2 is separated into into and out of two chambers, and an end is equipped with the transmission shaft 8 that is connected with pump coupling 10, and this transmission shaft 8 is supported on the pump postoperculum 9 by sliding bearing 11, and fixedlys connected by fastening piece with rotor 7.The other end of the pump housing 2 is equipped with the eccentric shaft 5 that is fixed on the pump protecgulum 14, contains the coax segments coaxial with transmission shaft 8 between the supporting section of this eccentric shaft 5 and the eccentric segment, is set with supporting cover 13 before the rotor by sliding bearing 12 on coax segments.Supporting cover 13 is connected mutually with rotor 7 before this rotor.Be shaped on four uniform radial holes on the rotor 7, a piston 3 is housed in each hole.Every piston 3 is hinged by an end of a wrist pin 6 and a connecting rod 4 respectively, and the other end of four connecting rods 4 and eccentric shaft 5 are hinged.
When power plant drive transmission shaft 8 rotations by pump coupling 10, and then when driving rotor 7 and rotating, four pistons 3 wherein when rotating thereupon, also because the radially linear reciprocating motion that constraint produced of the connecting rod that constitutes by connecting rod 4 and eccentric shaft 5 be superimposed on rotatablely move on, form the compound motion of circumference rotation stack radial displacement.The result forms periodic volume-variation in the space that each footpath of rotor rings inner carrier 3 ends, hole, this variation with two isolated chamber circumferential position engagement process of the pump housing 2 in continuously the import from the pump housing 2 of the medium carried is sucked, the outlet from the pump housing 2 simultaneously extrudes.
Because four mutual balances of movement inertia that uniform piston produces are inhaled, pressed work and closely accept mutually in the present embodiment, therefore running is very steady, and noise and delivery pressure pulsation are all very little.Secondly, the piston rotation combines with the ingenious of linear reciprocating motion, has avoided many troubles that valve brings are set, and makes the present embodiment pump structure rationally compact; And enforceable piston volume-variation replaces dependence differential pressure open-close valve, has then guaranteed desirable sealability, high working efficiency.In addition, supporting cover 13 is supported on respectively on transmission shaft 8 and the eccentric shaft 5 before rotor 7 that fuses and the rotor, constitutes freely supported structure, makes that the stress of present embodiment pump is scientific and reasonable, and it is more steady to work, and part is not easy to wear, long service life.
Except that above embodiment, the present invention can also have other variation patterns, and for example uniform piston is two, three etc., and all employings are equal to replaces or technological scheme that equivalent transformation forms, is the protection domain of requirement of the present invention.
Claims (5)
1. rotor-type piston pump, comprise the pump housing (2), piston (3), it is characterized in that: the described pump housing (2) is separated into into and out of two chambers, one end is equipped with the rotor (7) that transmission shaft (8) drives, the other end is equipped with eccentric shaft (5), be shaped at least one place radial hole on the described rotor (7), piston (3) is housed in the hole, described piston (3) is hinged by connecting rod (4) and eccentric shaft (5).
2. according to the described rotor-type piston pump of claim 1, it is characterized in that: described transmission shaft (8) is supported on the pump postoperculum (9) by bearing (11), and fixedlys connected by fastening piece with rotor (7).
3. according to the described rotor-type piston pump of claim 2, it is characterized in that: the other end of the described pump housing (2) is equipped with the eccentric shaft (5) that is fixed on the pump protecgulum (14), contain between the supporting section of described eccentric shaft (5) and the eccentric segment and the coaxial coax segments of transmission shaft (8), be set with supporting cover (13) before the rotor by bearing (12) on coax segments, supporting cover (13) is connected mutually with rotor (7) before the described rotor.
4. according to claim 2 or 3 described rotor-type piston pumps, it is characterized in that: described rotor is shaped on radial hole uniform more than two on (7), a piston (3) is housed in each hole, every piston (3) is hinged with an end of a connecting rod (4) by wrist pin (6) respectively, and the other end of described each connecting rod (4) and eccentric shaft (5) are hinged.
5. according to the described rotor-type piston pump of claim 4, it is characterized in that: supporting cover (13) is supported on respectively on transmission shaft (8) and the eccentric shaft (5) before described rotor (7) and the rotor, constitutes freely supported structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112763 CN1128928C (en) | 2002-03-15 | 2002-03-15 | Rotor-type piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112763 CN1128928C (en) | 2002-03-15 | 2002-03-15 | Rotor-type piston pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1379180A CN1379180A (en) | 2002-11-13 |
| CN1128928C true CN1128928C (en) | 2003-11-26 |
Family
ID=4742235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02112763 Expired - Fee Related CN1128928C (en) | 2002-03-15 | 2002-03-15 | Rotor-type piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128928C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871450B (en) * | 2010-06-08 | 2012-08-22 | 余文凌 | Small-flow high-lift radial piston pump |
| CN103883496B (en) * | 2014-03-27 | 2016-04-06 | 余文凌 | Rotator type multistage pump |
| CN109519353B (en) * | 2019-01-18 | 2024-04-09 | 东台市东方船舶装配有限公司 | High-flow low-noise piston pump |
-
2002
- 2002-03-15 CN CN 02112763 patent/CN1128928C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1379180A (en) | 2002-11-13 |
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| SE01 | Entry into force of request for substantive examination | ||
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |