CN108626113A - A kind of middle open type double-helix screw pump - Google Patents
A kind of middle open type double-helix screw pump Download PDFInfo
- Publication number
- CN108626113A CN108626113A CN201810720925.1A CN201810720925A CN108626113A CN 108626113 A CN108626113 A CN 108626113A CN 201810720925 A CN201810720925 A CN 201810720925A CN 108626113 A CN108626113 A CN 108626113A
- Authority
- CN
- China
- Prior art keywords
- connecting shaft
- outer housing
- screw rod
- gear
- open type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a kind of middle open type double-helix screw pumps,Including outer housing,First screw rod,Second screw rod,End connecting seat,Middle opening,Sealing shroud and transmission shaft,The outer housing both ends are threaded with end cap,First screw rod and the second screw rod are installed inside the outer housing,First screw rod both ends are equipped with the first connecting shaft,First connecting shaft is connected and fixed by axle bed and outer housing,Second screw rod both ends are equipped with the second connecting shaft,Second one end of the connecting shaft is rotatablely connected by end connecting seat and end cap,And second the connecting shaft other end through another end cap be arranged,Second one end of the connecting shaft is sequentially connected with transmission shaft,Described transmission shaft one end is connected with motor,First connecting shaft both ends are equipped with first gear,A kind of middle open type double-helix screw pump of the present invention,By offering middle opening on the upside of outer housing,It is convenient for overhauling,And it is convenient for addition lubricating oil.
Description
Technical field
The present invention relates to bispin line screw pump technology field, specifically a kind of middle open type double-helix screw pumps.
Background technology
The operation principle of bispin line screw pump is generally the difference of intermeshing rotor and swivel nut stator due to spiral head number
Not connected cavity volume is formd, when working rotor rotates, sealed volume chamber is along helix from the suction side of pump to discharge
End axially moves, and working media is made continuously to be conveyed from suction side to outlet side in sealed volume intracavitary.Quimby pump has sealing
Formula and blow-by formula two types still enter engagement space from one end by medium from both ends, and twin-screw is divided into double-suction type again
With two kinds of structures of single-suction.Blow-by formula screw pump not exclusively meets and saves the air-proof condition, its high and low pressure work
Chamber does not separate closely, and volumetric efficiency is lower than sealed screw pump.Especially under high pressure, this difference is more notable,
Therefore from economic considerations, blow-by screw pump is not suitable for high pressure range.Sealed Quimby pump only has two screw rods, but full
All air-proof conditions of foot.Its composition and characteristic etc., it is close with three screw pump, it is suitable for conveying clean lubrication free from foreign meter
Property liquid, can be used for the occasion of elevated pressures.Double-suction type structure enables the axial force on screw rod to be balanced.The driving of the pump
The bearing of gear and supporting screw is all located at except pump chamber, belongs to outboard bearing formula structure, can be used for conveying the medium of poor lubricity,
If conveying non-aggressive and the good medium of lubricity, built-in bearing formula structure, its bearing and driving gear all positions can be used
In the axle envelope number that pump in pump chamber, can be reduced in this way.Double-suction type Quimby pump, pump case band cooling jacket, has in uni-drive gear box logical
The coiled pipe of supercooling liquid, it can be used for conveying high-temperature medium.Screw pump can also be driven with magnetic coupling, and this pump can be complete
It stops a leak entirely.It is suitable for the conveying serious lubricating liquid of toxic, valuable or environmental pollution.
Existing bispin line screw pump technology has the following problems：Existing bispin line screw pump, pump case are integrated connection,
It is non-exchange if screw part damages, it eventually leads to entirety and scraps, be not easy to be overhauled, and be not easy to be added profit
Lubricating oil.
Invention content
The purpose of the present invention is to provide a kind of middle open type double-helix screw pumps, to solve the problems of the prior art.
To achieve the above object, the present invention provides the following technical solutions：A kind of middle open type double-helix screw pump, including shell
Body, the first screw rod, the second screw rod, end connecting seat, middle opening, sealing shroud and transmission shaft, outer housing both ends screw thread connect
It is connected to end cap, the first screw rod and the second screw rod are installed inside the outer housing, first screw rod both ends are equipped with the first company
Spindle, first connecting shaft are connected and fixed by axle bed and outer housing, and second screw rod both ends are equipped with the second connecting shaft,
Second one end of the connecting shaft is rotatablely connected by end connecting seat and end cap, and the second connecting shaft other end runs through another end cap
Setting, second one end of the connecting shaft are sequentially connected with transmission shaft, and described transmission shaft one end is connected with motor, and described first connects
Spindle both ends are equipped with first gear, second gear are equipped in second connecting shaft, and first gear is nibbled with second gear
Connection is closed, the outer housing both sides are connected with air entry and exhaust outlet, middle opening are offered on the upside of the outer housing, in described
Between open outer side sealing cover is installed.
Preferably, end connecting seat and second connecting shaft, end cap and transmission shaft junction bearing is installed, it is described
The junction of first connecting shaft and axle bed is equipped with bearing.
Preferably, it is connected by rubber seal between the sealing cover and outer housing, and sealing cover is installed by screw
On outer housing.
Preferably, sealing shroud is installed, and sealing shroud uses mechanical seal set between the transmission shaft and end cap.
Preferably, the first gear is provided with two pairs with second gear, and first gear is corresponding with second gear level
Setting.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention offers middle opening by outer housing upside,
Can be opened in the middle part of the outer housing, be convenient for overhauling, and end cap is threaded with by outer housing both ends, convenient for into
Row dismounting end cap replace the part of pump body, avoids entirety from scrapping, and can be open from the external shell in middle part,
It is convenient for addition lubricating oil, is conducive to the service life for improving the bispin line screw pump, by between sealing cover and outer housing
It is connected by rubber seal, and sealing cover is mounted on by screw on outer housing, is increased and is connected between sealing cover and outer housing
The leakproofness connect.
Description of the drawings
Fig. 1 is the overall structure sectional view of the present invention；
Fig. 2 is the overall structure diagram of the present invention.
In figure：1- outer housings, 2- end caps, the first screw rods of 3-, the first connecting shafts of 4-, 5- axle beds, the second screw rods of 6-, 7- second
Connecting shaft, the ends 8- connecting seat, 9- second gears, 10- first gears, 11- middle openings, 12- sealing covers, 13- screws, 14-
Rubber pad, 15- sealing shrouds, 16- sealing shrouds, 17- transmission shafts, 18- air entries, 19- exhaust outlets.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1-2, in the embodiment of the present invention, a kind of middle open type double-helix screw pump, including outer housing 1, the first spiral shell
Bar 3, the second screw rod 6, end connecting seat 8, middle opening 11, sealing shroud 16 and transmission shaft 17,1 both ends of outer housing are threaded with
End cap 2, is equipped with the first screw rod 3 and the second screw rod 6 inside outer housing 1, and when rotation work makes working media in sealed volume chamber
It is inside continuously conveyed from suction side to outlet side, 3 both ends of the first screw rod are equipped with the first connecting shaft 4, and the first connecting shaft 4 passes through axle bed
5 are connected and fixed with outer housing 1, and 6 both ends of the second screw rod are equipped with the second connecting shaft 7, and 7 one end of the second connecting shaft is connected by end
Seat 8 is rotatablely connected with end cap 2, and convenient for being attached fixation to the first screw rod 3 and 6 both ends of the second screw rod, and the second connecting shaft 7 is another
One end is arranged through another end cap 2, and 7 one end of the second connecting shaft is sequentially connected with transmission shaft 17, and 17 one end of transmission shaft is connected with electricity
Motivation, for providing conveying power, 4 both ends of the first connecting shaft are equipped with first gear 10, second are equipped in the second connecting shaft 7
Gear 9, and first gear 10 engages connection with second gear 9,1 both sides of outer housing are connected with air entry 18 and exhaust outlet 19, outside
1 upside of shell offers middle opening 11, and 11 outside of middle opening is equipped with sealing cover 12, close convenient for being carried out to middle opening 11
Envelope, the junction of end connecting seat 8 and the second connecting shaft 7, end cap 2 and transmission shaft 17 are equipped with bearing 16, the first connecting shaft 4 and
The junction of axle bed 5 is equipped with bearing 16, is convenient for 17 rotation work of the first connecting shaft 4, the second connecting shaft 7 and transmission shaft, sealing
It is tightly connected, and sealing cover 12 is mounted on by screw 13 on outer housing 1, is increased by rubber pad 14 between lid 12 and outer housing 1
The leakproofness connected between sealing cover 12 and outer housing 1 is added, sealing shroud 15 has been installed, and close between transmission shaft 17 and end cap 2
Big envelope 15 uses mechanical seal set, first gear 10 that second gear 9 is provided with two pairs, and first gear 10 and second gear 9
Level is correspondingly arranged.
Operation principle：Air entry 18 and exhaust outlet 19 are connected on hydraulic pipeline and carry out conveying liquid, passes through outer housing 1
Upside offers middle opening 11, can be opened from the middle part of outer housing 1, be convenient for overhauling, and passes through 1 liang of outer housing
End is threaded with end cap 2, is convenient for the part that dismounting end cap 2 replace pump body, avoids entirety from scrapping, Er Qieneng
It is enough to be opened from the external shell in middle part 1, it is convenient for addition lubricating oil, be conducive to improve the bispin line screw pump uses the longevity
Life.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (5)
1. a kind of middle open type double-helix screw pump, including outer housing (1), the first screw rod (3), the second screw rod (6), end connecting seat
(8), middle opening (11), sealing shroud (16) and transmission shaft (17), it is characterised in that：Outer housing (1) both ends are threadedly coupled
There is end cap (2), the first screw rod (3) and the second screw rod (6), the first screw rod (3) both ends are installed inside the outer housing (1)
First connecting shaft (4) is installed, first connecting shaft (4) is connected and fixed by axle bed (5) and outer housing (1), and described second
Screw rod (6) both ends are equipped with the second connecting shaft (7), and described second connecting shaft (7) one end passes through end connecting seat (8) and end cap
(2) it is rotatablely connected, and the second connecting shaft (7) other end is arranged through another end cap (2), described second connecting shaft (7) one end passes
Dynamic to be connected with transmission shaft (17), described transmission shaft (17) one end is connected with motor, and the first connecting shaft (4) both ends are equipped with
First gear (10) is equipped with second gear (9), and first gear (10) and second gear (9) on second connecting shaft (7)
Engagement connection, outer housing (1) both sides are connected with air entry (18) and exhaust outlet (19), are opened up on the upside of the outer housing (1)
There is middle opening (11), sealing cover (12) is installed on the outside of the middle opening (11).
2. a kind of middle open type double-helix screw pump according to claim 1, it is characterised in that：The end connecting seat (8)
Bearing (16) is installed with the junction of the second connecting shaft (7), end cap (2) and transmission shaft (17), first connecting shaft (4) with
The junction of axle bed (5) is equipped with bearing (16).
3. a kind of middle open type double-helix screw pump according to claim 1, it is characterised in that：The sealing cover (12) with it is outer
It is tightly connected by rubber pad (14) between shell (1), and sealing cover (12) is mounted on by screw (13) on outer housing (1).
4. a kind of middle open type double-helix screw pump according to claim 1, it is characterised in that：The transmission shaft (17) and end
Sealing shroud (15) is installed, and sealing shroud (15) uses mechanical seal set between lid (2).
5. a kind of middle open type double-helix screw pump according to claim 1, it is characterised in that：The first gear (10) with
Second gear (9) is provided with two pairs, and first gear (10) is correspondingly arranged with second gear (9) level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720925.1A CN108626113A (en) | 2018-07-03 | 2018-07-03 | A kind of middle open type double-helix screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720925.1A CN108626113A (en) | 2018-07-03 | 2018-07-03 | A kind of middle open type double-helix screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108626113A true CN108626113A (en) | 2018-10-09 |
Family
ID=63689485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810720925.1A Pending CN108626113A (en) | 2018-07-03 | 2018-07-03 | A kind of middle open type double-helix screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108626113A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1503488A (en) * | 1974-03-06 | 1978-03-08 | Svenska Rotor Maskiner Ab | Meshing screw rotor fluid maching |
| US20130156624A1 (en) * | 2011-12-16 | 2013-06-20 | Neville D. Kapadia | Slide valve for screw compressor |
| CN205361948U (en) * | 2016-01-08 | 2016-07-06 | 灵璧县飞松机械制造有限责任公司 | A drive mechanism shell for grain sieve separator |
| CN105756925A (en) * | 2016-04-28 | 2016-07-13 | 天津市曌林机泵设备有限公司 | Colloidal liquid pump adopting single set of mechanical seal |
| CN208669577U (en) * | 2018-07-03 | 2019-03-29 | 浙江融乐环境科技有限公司 | A kind of middle open type double-helix screw pump |
-
2018
- 2018-07-03 CN CN201810720925.1A patent/CN108626113A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1503488A (en) * | 1974-03-06 | 1978-03-08 | Svenska Rotor Maskiner Ab | Meshing screw rotor fluid maching |
| US20130156624A1 (en) * | 2011-12-16 | 2013-06-20 | Neville D. Kapadia | Slide valve for screw compressor |
| CN205361948U (en) * | 2016-01-08 | 2016-07-06 | 灵璧县飞松机械制造有限责任公司 | A drive mechanism shell for grain sieve separator |
| CN105756925A (en) * | 2016-04-28 | 2016-07-13 | 天津市曌林机泵设备有限公司 | Colloidal liquid pump adopting single set of mechanical seal |
| CN208669577U (en) * | 2018-07-03 | 2019-03-29 | 浙江融乐环境科技有限公司 | A kind of middle open type double-helix screw pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181009 |
|
| WD01 | Invention patent application deemed withdrawn after publication |