CN205117724U - Claw shape dry -type pump - Google Patents
Claw shape dry -type pump Download PDFInfo
- Publication number
- CN205117724U CN205117724U CN201520837722.2U CN201520837722U CN205117724U CN 205117724 U CN205117724 U CN 205117724U CN 201520837722 U CN201520837722 U CN 201520837722U CN 205117724 U CN205117724 U CN 205117724U
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- rotor
- pump
- claw shape
- air
- housing
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- Rotary Pumps (AREA)
Abstract
The utility model discloses a claw shape dry -type pump, including the casing, be provided with a plurality of claw shape of group rotor assemblies in this casing, the casing on be provided with intake pipe and blast pipe, the claw shape rotor assembly including the rotor and the rotor of giving vent to anger of admitting air, admit air that the fretwork forms the rotor cavity that admits air in the rotor, rotor cavity from the point medial opening of the rotor that admits air that should admit air, give vent to anger that the fretwork forms the rotor cavity of giving vent to anger in the rotor, the rotor cavity opening from the point portion of the rotor of giving vent to anger outside of should giving vent to anger, the casing anterior be connected with the batch oil tank through confession oil pipe respectively with the rear portion, the casing in be provided with mainly the gear pump that constitutes by fuel feeding gear, supporting axle, the casing setting arrange the mouth in advance. The utility model has the advantages of: simple structure admits air the rotor cavity through the setting and alleviates the rotor weight with the rotor cavity of giving vent to anger, and the bleed air flow of increase pump forms oil film bearing through the gear pump fuel feeding, improves life.
Description
Technical field
The utility model relates to dry pump manufacturing technology field, particularly relates to a kind of claw shape dry type pump.
Background technique
Claw shape dry type pump is as the one of dry pump, identical with other secretary in charge of something's pump is all displacement pump, some groups of intermeshing claw-type rotors are provided with in its pump chamber, do not contact between rotor with rotor and between rotor with pump chamber, and leave small gap, need not any oiling agent, thus ensure that clean vacuum environment.The form of claw shape dry type pump structure many employings multi-stage rotor series winding, every group rotor lays respectively at different pump chamber and does synchronous backward motion, and pump chamber is divided into air aspiration cavity and exhaust cavity two-part by claw-type rotor; Along with the continuous running of rotor, carry out the air-breathing exhaust process circulated, realize the continuous air extraction object of pump.Dry pump has the advantages such as low vibration, low noise, applied widely.
As publication number name in be CN1862020A publication date be on November 15th, 2006 is called the patent of invention open file of " claw shape dry type vacuum pump ", disclose a kind of claw shape dry type vacuum pump, its structure comprises: in the pump housing of first to fourth pole, the pump housing first to fourth grade rotor to and dividing plate, the fixing and master and slave moving axis that rotor driven is right and driving and driven gear, connect coupling between driving shaft and motor, top cover, top bearing cap and row, suction tude; Described rotor is to being twin-stage claw type, and first order rotor is to being positive pawl, second level rotor to being anti-pawl, third level rotor to being positive pawl, fourth stage rotor to being anti-pawl, described in be positioned at cavity at different levels rotor be zero degree to phase angle.Although this claw shape dry type vacuum pump reduces the flow resistance of gas significantly, its complex structure, maintenance inconvenience.
As publication number name in be CN103644120A publication date be on March 19th, 2014 is called the patent of invention open file of " a kind of claw shape dry type vacuum pump ", disclose a kind of claw shape dry type vacuum pump, it is made up of housing, axle, rotor, suction tude, spring, valve block, air connection mouth, outlet pipe; Axle, rotor are positioned at housing, and suction tude, outlet pipe are positioned at housing side, and one-way valve open in usual is made up of spring, valve block, and air connection mouth is connected with outlet pipe by one-way valve open in usual.This dry vacuum pump structure is comparatively simple, and cost is low, but its inhale, venting capacity is limited, and suction tude, outlet pipe are arranged at homonymy, have impact on the cooling of housing.
In sum, dry pump (containing screw pump) price is high, and universal difficulty is large, and compact structure is accurate, and maintenance and installation difficulty, the maintenance cycle is short, and working life is short.
Model utility content
The purpose of this utility model is to provide a kind of claw shape dry type pump, and overcome the deficiency that above-mentioned prior art exists, structure is simple, rate of air sucked in required is large, long service life, and using adaptability is wide.
The utility model is achieved through the following technical solutions:
A kind of claw shape dry type pump, include housing, some groups of claw-type rotor groups are provided with in this housing, described housing is provided with suction tude and outlet pipe, described claw-type rotor group comprises air inlet rotor and goes out air rotor, and in described air inlet rotor, hollow out forms air inlet rotor cavity, and this air inlet rotor cavity is from side opening in the tip of air inlet rotor, the described hollow out in air rotor that goes out forms rotor cavity of giving vent to anger, and this rotor cavity of giving vent to anger is from the tip outer openings going out air rotor; Described housing front and rear is connected with fuel reserve tank respectively by fuel supply line, and be provided with the gear pump primarily of forming for oilgear, supporting axle in described housing, described housing arranges walkthrough mouth; Air inlet rotor and go out air rotor and be provided with dynamic balancing lightening hole.
For optimizing technique scheme, the concrete measure taked also comprises:
Described gear pump includes for oilgear, supporting axle, the pump housing, end cap, shaft seal and bearing, and described supporting axle is placed in the described center for oilgear, and the both sides for oilgear are respectively arranged with shaft seal and bearing; The two ends of the described pump housing are fixed with end cap respectively, and the bottom of the described pump housing is provided with filler opening, and the top of the described pump housing is provided with oil outlet.
The diameter of described filler opening is less than the diameter of described oil outlet.
Described shaft seal is made up of the backbone sealing ring be arranged in order, spiral end face, derotation exterior edge face and axle sleeve, and the periphery of described axle sleeve is provided with at least one piston ring; The backbone sealing ring of described shaft seal is arranged for oilgear near described.
Described oil outlet is provided with flow-limiting valve and pressure-limit valve.
Described suction tude adopts two air intake structure, and described outlet pipe also adopts double-exhaust structure.
The bottom of described housing is provided with exhaust tube.
The casing of described fuel reserve tank is the sandwich structure of internal water flooding.
The bottom of described air inlet rotor cavity is the bottom that semi-circular shape structure extends to air inlet rotor.
The bottom of described rotor cavity of giving vent to anger is the bottom that semi-circular shape structure extends to out air rotor.
Compared with prior art, the beneficial effect had is: be air inlet rotor and go out air rotor by claw-type rotor component, and air inlet rotor and go out air rotor respectively hollow out air inlet rotor cavity is set and gives vent to anger rotor cavity, not only alleviate the weight of rotor, and a pair rotor is when mutually operating in the other direction, setting due to cavity increases the volume of air-inlet cavity, thus the while of effectively can improving pump degree of vacuum, rate of air sucked in required also increases to some extent; By the setting of walkthrough mouth, accelerate exhaust, improve the anti-overloading performance of pump.In this claw shape dry type pump, gear pump is set, by gear pump for low pressure oil, axle forms filmatic bearing, makes need not produce mechanical friction during axle High Rotation Speed, thus greatly reduce the rate of fault of equipment, and effectively can improve the working life of equipment.The utilization of two air inlet double-exhaust adds pump and uses adaptive capacity, objectively reduces purchase cost.Air inlet rotor and go out air rotor and be provided with dynamic balancing lightening hole, makes rotor more easily arrive dynamic balancing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model rotor;
Fig. 3 is the sectional structure schematic diagram of the utility model gear pump;
Fig. 4 is A portion enlarged view in Fig. 3.
Embodiment
For making the object of the utility model embodiment and technological scheme clearly, below in conjunction with the accompanying drawing of the utility model embodiment, the technological scheme of the utility model embodiment is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, belongs to the scope of the utility model protection.
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Drawing reference numeral illustrates:
Housing 1, walkthrough mouth 1a, suction tude 11, outlet pipe 12, exhaust tube 13, air inlet rotor 2, air inlet rotor cavity 2a, go out air rotor 3, the rotor cavity 3a that gives vent to anger, fuel supply line 4, fuel reserve tank 5, for oilgear 61, supporting axle 62, the pump housing 63, filler opening 63a, oil outlet 63b, end cap 64, bearing 65, backbone sealing ring 65a, spiral end face 65b, derotation exterior edge face 65c, axle sleeve 65d, piston ring 65e, shaft seal 66, flow-limiting valve 67, pressure-limit valve 68, dynamic balancing lightening hole 7.
As shown in Figures 1 to 4, a kind of claw shape dry type pump, include housing 1, some groups of claw-type rotor groups are provided with in this housing 1, described housing 1 is provided with suction tude 11 and outlet pipe 12, described claw-type rotor group comprises air inlet rotor 2 and goes out air rotor 3, in described air inlet rotor 2, hollow out forms air inlet rotor cavity 2a, this air inlet rotor cavity 2a is from side opening in the tip of air inlet rotor 2, the described hollow out in air rotor 3 that goes out forms the rotor cavity 3a that gives vent to anger, and this rotor cavity 3a that gives vent to anger is from the tip outer openings going out air rotor 3; Described housing 1 front and rear is connected with fuel reserve tank 5 respectively by fuel supply line 4, and be provided with the gear pump primarily of forming for oilgear 61, supporting axle 62 in described housing 1, described housing 1 arranges walkthrough mouth 1a; Described air inlet rotor 2 and go out air rotor 3 and be provided with dynamic balancing lightening hole 7.
The rotor of claw shape dry type vacuum pump rotates in pump chamber, and the top of air inlet rotor 2 forms air-inlet cavity and outlet chamber with the top going out air rotor 3 in rotation, and two chambeies are forever not connected each other.
Air inlet rotor 2 and go out air rotor 3 and adopt clip structure, convenient for assembly, maintenance.
The claw-type rotor group of this claw shape dry type pump comprises air inlet rotor 2 and goes out air rotor 3, and in air inlet rotor 2, arrange air inlet rotor cavity 2a, going out in air rotor 3 to set out air rotor cavity 3a; The setting of air inlet rotor cavity 2a and the rotor cavity 3a that gives vent to anger substantially reduces the weight of rotor, and then the rotary inertia produced when reducing rotor turns, alleviates the load of rotating shaft.
The bottom of described air inlet rotor cavity 2a is the bottom that semi-circular shape structure extends to air inlet rotor 2, and the bottom of the described rotor cavity 3a that gives vent to anger is the bottom that semi-circular shape structure extends to out air rotor 3.Setting like this, can increase air inlet rotor cavity 2a as far as possible and the volume of the rotor cavity 3a that gives vent to anger, thus subtract trochantinian weight as much as possible under the prerequisite ensureing rotor strength.
During the running of claw shape dry type pump, a pair rotor running in the other direction mutually; A pair claw-type rotor, the air inlet rotor cavity 2a of air inlet rotor 2, from side opening in the tip of air inlet rotor 2, goes out the rotor cavity 3a that gives vent to anger of air rotor 3 from the tip outer openings going out air rotor 3.When a pair rotor operates mutually in the other direction, the air-inlet cavity volume of dry pump becomes large and produces vacuum, in pumping process, the air-inlet cavity of dry pump is connected with the air inlet rotor cavity 2a of air inlet rotor 2, the volume of such air-inlet cavity increases, and the rate of air sucked in required of dry pump increases, and pumping speed improves.Design like this, effect of a pair rotor not second to effect of two pawl construction rotor, and does not have the dead space part of two pawl rotor; In addition, this claw shape dry type pump more easily realizes because air-inlet cavity increases vacuum, and between rotor and pump chambers, the suitable amplification in gap is conducive to the increase of pump work life-time dilatation and reliability.Moreover because inner chamber is closed therefore this part point leak rate of total measurement (volume) is almost nil completely, therefore, vacuum rate increases, and the dynamic balancing of rotor is also more easily grasped.
The housing 1 of this claw shape dry type pump is provided with walkthrough mouth 1a, by the venting capacity arranging raising pump of walkthrough mouth 1a, thus improves the overall performance of pump.
Described gear pump includes for oilgear 61, supporting axle 62, the pump housing 63, end cap 64, shaft seal 65 and bearing 66, and described supporting axle 62 is placed in the described center for oilgear 61, and the both sides for oilgear 61 are respectively arranged with shaft seal 65 and bearing 66; The two ends of the described pump housing 63 are fixed with end cap 64 respectively, and the bottom of the described pump housing 63 is provided with filler opening 63a, and the top of the described pump housing 63 is provided with oil outlet 63b.
The diameter of described filler opening 63a is less than the diameter of described oil outlet 63b.
Described shaft seal 65 is made up of the backbone sealing ring 65a be arranged in order, spiral end face 65b, derotation exterior edge face 65c and axle sleeve 65d, and the periphery of described axle sleeve 65d is provided with at least one piston ring 65e; The backbone sealing ring 65a of described shaft seal 65 is arranged for oilgear 61 near described.
Shaft seal 65 plays important seal action in gear pump, and the quality of its sealing will directly have influence on the working life of whole dry pump.Here, be provided with the piston ring 65e that twice are parallel in the periphery of axle sleeve 65d, ensure its sealing further.In addition, spiral end face 65b and derotation exterior edge face 65c is set respectively in the outside of backbone sealing ring 65a, utilize the end face of dextrorotation and derotation two contrary rotation directions to be fixed backbone sealing ring 65a, effectively can prevent it from loosening, ensure that the reliability of sealing.
Described oil outlet 63b is provided with flow-limiting valve 67 and pressure-limit valve 68.Flow-limiting valve 67 is set and pressure-limit valve 68 can ensure equipment reliability of operation further.
This claw shape dry type pump arranges gear pump in housing 1, and be connected with fuel reserve tank 5 by fuel supply line 4, being pumped in housing 1 from fuel reserve tank 5 by lubricant oil for oilgear 61 by gear pump, makes lubricant oil form oil film on the axle bed of axle, and axle holds up and forms filmatic bearing by oil film.In claw shape dry type pump operation process, filmatic bearing plays the effect of reach, due to the existence of oil film, mechanical friction need not be produced during axle high speed rotating, not only substantially reduce frictional force and rotational resistance, and can also noise be reduced, thus enable this claw shape dry type pump high speed, smooth operation.Adopt the axle of filmatic bearing in supporting operation process greatly can improve the working life of equipment, reduce the rate of fault of equipment.The >30000h in working life of this claw shape dry type pump, and safeguard very convenient.
And the meaning arranging bearing 66 in the both sides for oilgear 61 is: when stopping at equipment, for axle provides support, and axle can be made to be in axle bed central authorities, antifriction alloy can be saved like this, make structure more simple.Device start is after several seconds, and the load of axle just assume responsibility for by oil film; In operation process, the rotation of bearing 66 can make oil splash, and make oil content cloth ground more even, thus more low oil pressure reduces the leakage of oil.
Described suction tude 11 adopts two air intake structure, and described outlet pipe 12 also adopts double-exhaust structure.
After suction tude 11 concentrates air inlet, be divided into two-way and form two air intake structure; And discharge portion concentrates discharge after two relief openings enter the exhaust supervisor of bottom, so form double-exhaust structure.Adopt the pump chamber arrangement gone with each other all the time, add the reliability of pump, exhaust is placed on pump housing central discharge air pressure and can not entreats and the sealing of the pump housing is vented to concentrate simultaneously and is convenient to cooling, can reduce delivery temperature.
The bottom of described housing 1 is provided with exhaust tube 13.
The casing of described fuel reserve tank 5 is the sandwich structure of internal water flooding.
Claw shape dry type pump of the present utility model pumping speed when middle vacuum reaches 75L/s; When rough vacuum, pumping speed is 150L/s, is twice than during middle vacuum.And according to different demand, mutually can switch under two states, wide adaptability, improve manufacturing efficiency.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the utility model.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Claims (10)
1. a claw shape dry type pump, include housing (1), some groups of claw-type rotor groups are provided with in this housing (1), described housing (1) is connected with suction tude (11) and outlet pipe (12), it is characterized in that: described claw-type rotor group comprises air inlet rotor (2) and goes out air rotor (3), the interior hollow out of described air inlet rotor (2) forms air inlet rotor cavity (2a), this air inlet rotor cavity (2a) is from side opening in the tip of air inlet rotor (2), the described interior hollow out of air rotor (3) that goes out forms rotor cavity (3a) of giving vent to anger, this rotor cavity of giving vent to anger (3a) is from the tip outer openings going out air rotor (3), described housing (1) front and rear is connected with fuel reserve tank (5) respectively by fuel supply line (4), be provided with in described housing (1) by the gear pump formed for oilgear (61) and supporting axle (62), described housing (1) arranges walkthrough mouth (1a), described air inlet rotor (2) and go out air rotor (3) and be provided with dynamic balancing lightening hole (7).
2. a kind of claw shape dry type pump as claimed in claim 1, it is characterized in that: described gear pump includes for oilgear (61), supporting axle (62), the pump housing (63), end cap (64), shaft seal (65) and bearing (66), described supporting axle (62) is arranged at the described center for oilgear (61), and the both sides for oilgear (61) are respectively arranged with shaft seal (65) and bearing (66); The two ends of the described pump housing (63) are fixed with end cap (64) respectively, the bottom of the described pump housing (63) is provided with filler opening (63a), and the top of the described pump housing (63) is provided with oil outlet (63b).
3. a kind of claw shape dry type pump as claimed in claim 2, is characterized in that: the diameter of described filler opening (63a) is less than the diameter of described oil outlet (63b).
4. a kind of claw shape dry type pump as claimed in claim 3, it is characterized in that: described shaft seal (65) is made up of the backbone sealing ring be arranged in order (65a), spiral end face (65b), derotation exterior edge face (65c) and axle sleeve (65d), the periphery of described axle sleeve (65d) is provided with at least one piston ring (65e); The backbone sealing ring (65a) of described shaft seal (65) is arranged for oilgear (61) near described.
5. a kind of claw shape dry type pump as claimed in claim 4, is characterized in that: described oil outlet (63b) is provided with flow-limiting valve (67) and pressure-limit valve (68).
6. a kind of claw shape dry type pump as claimed in claim 5, is characterized in that: described suction tude (11) adopts two air intake structure, and described outlet pipe (12) also adopts double-exhaust structure.
7. a kind of claw shape dry type pump as claimed in claim 6, is characterized in that: the bottom of described housing (1) is provided with exhaust tube (13).
8. a kind of claw shape dry type pump as claimed in claim 7, is characterized in that: the casing of described fuel reserve tank (5) is the sandwich structure of internal water flooding.
9. a kind of claw shape dry type pump as claimed in claim 8, is characterized in that: the bottom of described air inlet rotor cavity (2a) is the bottom that semi-circular shape structure extends to air inlet rotor (2).
10. a kind of claw shape dry type pump as claimed in claim 8, is characterized in that: the bottom of described rotor cavity of giving vent to anger (3a) is the bottom that semi-circular shape structure extends to out air rotor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837722.2U CN205117724U (en) | 2015-10-27 | 2015-10-27 | Claw shape dry -type pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837722.2U CN205117724U (en) | 2015-10-27 | 2015-10-27 | Claw shape dry -type pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117724U true CN205117724U (en) | 2016-03-30 |
Family
ID=55573339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520837722.2U Withdrawn - After Issue CN205117724U (en) | 2015-10-27 | 2015-10-27 | Claw shape dry -type pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117724U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179252A (en) * | 2015-10-27 | 2015-12-23 | 易先杰 | Claw type dry pump |
| CN116538089A (en) * | 2023-06-08 | 2023-08-04 | 北京通嘉宏瑞科技有限公司 | Rotor structure and vacuum pump |
| CN116576107A (en) * | 2023-06-08 | 2023-08-11 | 北京通嘉宏瑞科技有限公司 | Rotor and vacuum pump |
-
2015
- 2015-10-27 CN CN201520837722.2U patent/CN205117724U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179252A (en) * | 2015-10-27 | 2015-12-23 | 易先杰 | Claw type dry pump |
| CN116538089A (en) * | 2023-06-08 | 2023-08-04 | 北京通嘉宏瑞科技有限公司 | Rotor structure and vacuum pump |
| CN116576107A (en) * | 2023-06-08 | 2023-08-11 | 北京通嘉宏瑞科技有限公司 | Rotor and vacuum pump |
| CN116576107B (en) * | 2023-06-08 | 2024-05-17 | 北京通嘉宏瑞科技有限公司 | Rotor and vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160330 Effective date of abandoning: 20170804 |