CN202756244U - Oil resistant sealed rotary vane pump - Google Patents
Oil resistant sealed rotary vane pump Download PDFInfo
- Publication number
- CN202756244U CN202756244U CN 201220204056 CN201220204056U CN202756244U CN 202756244 U CN202756244 U CN 202756244U CN 201220204056 CN201220204056 CN 201220204056 CN 201220204056 U CN201220204056 U CN 201220204056U CN 202756244 U CN202756244 U CN 202756244U
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- China
- Prior art keywords
- rotor
- stator
- oil
- pump
- sliding vane
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- Expired - Lifetime
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Abstract
The utility model relates to an oil resistant sealed rotary vane pump comprising a pump casing. A front end cap and a rear end cap are respectively arranged at the front end and the rear end of the pump casing, a stator is arranged inside the pump casing, and an air inlet and an air outlet are respectively arranged on the stator. The oil resistant sealed rotary vane pump is characterized in that a hollow cavity is arranged between the pump casing and the stator and is separated into an oil cavity and a water cavity, a rotor is eccentrically arranged inside the stator, two grooves are longitudinally arranged on the rotor and in a same diameter direction of a section of the rotor, rotary vanes are respectively arranged in the grooves, head of the rotary vanes extend out of the grooves on the rotor and are located in an inner cavity of the stator, bottoms of the rotary vanes are connected via a rotary vane spring, and a discharge valve plate made of polytetrafluoroethylene material is mounted at the air outlet. Since the water cavity for cooling is arranged outside of the pump, thermal expansion of the rotary vanes and the rotor during working is avoided, and service life is prolonged.
Description
Technical field
The utility model relates to a kind of sliding vane rotary pump, especially a kind of anti-oil-tightening sliding vane rotary pump.
Background technique
Rotary-vane vaccum pump is the basic equipment that obtains vacuum, but its independent role also can be used as fore pump and the forepump of all kinds of high vacuum systems.There is following point in existing rotary-vane vaccum pump device in practical work process: 1, owing to produce violent sliding friction between blade and the pump housing, when long-play, can produce a large amount of heats, make rotor and blade produce certain thermal expansion, in case this thermal expansion causes the gap of rotor and blade to disappear, the locking of two parts possibility is no longer worked pump; 2, exhaust valve plate generally adopts the rubber material manufacturing, and working life is shorter.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of anti-oil-tightening sliding vane rotary pump is provided, and avoids rotor that sliding vane rotary pump causes owing to the heat that produces in the course of the work and the thermal expansion phenomenon of blade, has prolonged working life.
According to the technological scheme that the utility model provides, described anti-oil-tightening sliding vane rotary pump comprises pump case, and the forward and backward two ends of pump case arrange respectively front cover and rear end cover, in the inboard of pump case stator are set, and suction port and relief opening are set respectively on the stator; Feature is: be provided with cavity between described pump case and stator, this cavity is separated to form oil pocket and water cavity; Inside at described stator is installed rotor prejudicially, length direction along rotor on rotor is provided with two grooves, two grooves are positioned on the same diametric(al) in rotor cross section, in two grooves, place respectively blade, the head of two blades all stretches out the inner chamber that epitrochanterian groove is arranged in stator, is connected by the blade spring between the bottom of two blades;
In described exhaust ports exhaust valve plate is installed.Described rotor is cylindric, and a side of the outer periphery of rotor and stator inner wall is tangent, and the outer periphery of rotor and the distance between the stator inner wall are increased gradually by this tangent place.
Described relief opening is positioned at oil pocket.Shell at described oil pocket arranges purge cock.Shell at described water cavity arranges drain screw.Described exhaust valve plate adopts polytetrafluoroethylmaterial material to make.
The utility model is provided with the water cavity for cooling outside the pump housing, avoided the thermal expansion phenomenon of blade and rotor in the working procedure, has prolonged working life; Exhaust valve plate of the present utility model adopts polytetrafluoroethylmaterial material to make, and the life-span can prolong 10 times.
Description of drawings
Fig. 1 is decomposing state schematic representation of the present utility model.
Fig. 2 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with concrete accompanying drawing.
Such as Fig. 1 ~ shown in Figure 2: anti-oil-tightening sliding vane rotary pump comprises stator 1, blade 2, rotor 3, blade spring 4, purge cock 6, suction port 7, relief opening 8, front cover 9, rear end cover 10, pump case 11, exhaust valve plate 12, oil pocket 13, water cavity 14, drain screw 15 etc.
The utility model comprises pump case 11, and the forward and backward two ends of pump case 11 arrange respectively front cover 9 and rear end cover 10, in the inboard of pump case 11 stator 1 are set, and suction port 7 and relief opening 8 are set respectively on the stator 1, and exhaust valve plate 12 is installed at relief opening 8 places; Inside at described stator 1 is installed rotor 3 prejudicially, rotor 3 is cylindric, one side of the outer periphery of rotor 3 and stator 1 inwall is tangent, distance between the outer periphery of rotor 3 and stator 1 inwall increases (as shown in Figure 2) gradually by this tangent place, length direction along rotor 3 on rotor 3 is provided with two grooves, two grooves are positioned on the same diametric(al) in rotor 3 cross sections, in two grooves, place respectively blade 2, the head of two blades 2 all stretches out the inner chamber that groove on the rotor 3 is arranged in stator 1, is connected by blade spring 4 between the bottom of two blades 2; Drive in the process of blade 2 rotations at rotor 3, two blades 2 are close to the inwall of stator 1, suction port 7 and relief opening 8 are separated, and the air-inlet cavity of stator 1 is periodically enlarged and air-breathing, and this moment, exhaust valve plate 12 " was closed "; Exhaust cavity periodically dwindles and pressurized gas, carries out exhaust thereby push exhaust valve plate 12 open, and then obtains vacuum;
As shown in Figure 2, be provided with cavity between described pump case 11 and stator 1, this cavity is separated to form oil pocket 13 and water cavity 14, and described relief opening 8 is positioned at oil pocket 13, in order to pressurized air is filtered, at the shell of oil pocket 13 purge cock 6 is set; Shell at described water cavity 14 arranges drain screw 15, and water cavity 14 can be used in the course of the work cooled rotor and blade rotates the heat that produces, and avoids rotor and blade to be out of shape because of thermal expansion.
The utility model in use, the working procedure of exhaust valve plate 12 is endless form of " closing → open → close "; Exhaust valve plate 12 adopts the rubber material manufacturing in the prior art, and working life is short, and exhaust valve plate 12 of the present utility model adopts polytetrafluoroethylmaterial material to make, and the life-span can prolong 10 times.
Working procedure of the present utility model: the biasing rotor that blade is housed is done rotation motion in pump chamber, and the pump chamber swept volume of a single chamber cyclically-varying of being separated by blade is bled with realization.During rotor, under the effect such as centrifugal force, blade reciprocatingly slides and remains with the pump chamber inwall along groove and contacts, and pump chamber is divided into the working room of two or several variable volumes; During the rotation of rotor clockwise direction, the air aspiration cavity volume that communicates with intakeport increases gradually by zero, the intracavity gas pressure decreased, and pumped gas just sucks continuously from intakeport.Simultaneously, the discharge chamber volume that communicates with relief opening from large to small, the gas in the suction chamber is compressed, when treating that gas pressure is higher than atmospheric pressure, pushes outlet valve open and discharges atmosphere; Rotor rotates continuously, and pump is just constantly bled.
Claims (6)
1. anti-oil-tightening sliding vane rotary pump, comprise pump case (11), the forward and backward two ends of pump case (11) arrange respectively front cover (9) and rear end cover (10), in the inboard of pump case (11) stator (1) are set, and suction port (7) and relief opening (8) are set respectively on the stator (1); It is characterized in that: be provided with cavity between described pump case (11) and stator (1), this cavity is separated to form oil pocket (13) and water cavity (14); In the inside of described stator (1) rotor (3) is installed prejudicially, be provided with two grooves at the upper length direction along rotor (3) of rotor (3), two grooves are positioned on the same diametric(al) in rotor (3) cross section, in two grooves, place respectively blade (2), the head of two blades (2) all stretches out the inner chamber that groove on the rotor (3) is arranged in stator (1), is connected by blade spring (4) between the bottom of two blades (2).
2. anti-oil-tightening sliding vane rotary pump as claimed in claim 1 is characterized in that: locate to install exhaust valve plate (12) at described relief opening (8).
3. anti-oil-tightening sliding vane rotary pump as claimed in claim 1, it is characterized in that: described rotor (3) is for cylindric, one side of the outer periphery of rotor (3) and stator (1) inwall is tangent, and the distance between the outer periphery of rotor (3) and stator (1) inwall is increased gradually by this tangent place.
4. anti-oil-tightening sliding vane rotary pump as claimed in claim 1, it is characterized in that: described relief opening (8) is positioned at oil pocket (13).
5. anti-oil-tightening sliding vane rotary pump as claimed in claim 1, it is characterized in that: the shell at described oil pocket (13) arranges purge cock (6).
6. anti-oil-tightening sliding vane rotary pump as claimed in claim 1, it is characterized in that: the shell at described water cavity (14) arranges drain screw (15).
7. anti-oil-tightening sliding vane rotary pump as claimed in claim 2, it is characterized in that: described exhaust valve plate (12) adopts polytetrafluoroethylmaterial material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220204056 CN202756244U (en) | 2012-05-08 | 2012-05-08 | Oil resistant sealed rotary vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220204056 CN202756244U (en) | 2012-05-08 | 2012-05-08 | Oil resistant sealed rotary vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756244U true CN202756244U (en) | 2013-02-27 |
Family
ID=47735429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220204056 Expired - Lifetime CN202756244U (en) | 2012-05-08 | 2012-05-08 | Oil resistant sealed rotary vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895783A (en) * | 2015-06-05 | 2015-09-09 | 无锡市羊尖盛裕机械配件厂 | Rotating piece type mechanical pump |
-
2012
- 2012-05-08 CN CN 201220204056 patent/CN202756244U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895783A (en) * | 2015-06-05 | 2015-09-09 | 无锡市羊尖盛裕机械配件厂 | Rotating piece type mechanical pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term |