CN107035683A - A kind of three screw pump - Google Patents
A kind of three screw pump Download PDFInfo
- Publication number
- CN107035683A CN107035683A CN201710265955.3A CN201710265955A CN107035683A CN 107035683 A CN107035683 A CN 107035683A CN 201710265955 A CN201710265955 A CN 201710265955A CN 107035683 A CN107035683 A CN 107035683A
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- screw pump
- pump
- pump according
- 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
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Classifications
-
- 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
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention belongs to screw pump technology field, more particularly to a kind of three screw pump, the annular seal space that the three piece sealings that are mutually twisted screw rod of the suction inlet through being parallel to each other in bushing and its are cooperatively formed runs through outlet, the present invention, which solves prior art, to be present due to screw rod discontinuity equalization, the less problem of caused inhalation power, with inhalation power and flow are big, mitigation bearing is withstood forces, safe advantageous effects.
Description
Technical field
The invention belongs to screw pump technology field, more particularly to a kind of three screw pump.
Background technology
Screw pump is volume type rotor pump, and it is to change to suck by the volume of the annular seal space formed by screw and bushing
With discharge liquid.Screw pump by screw rod number be divided into single-screw (single screw) pump, it is double, three and five-screw pump, be flow the characteristics of screw pump
Steadily, pressure fluctuation is small, have low suction capacity, noise, efficiency high, long lifespan, reliable operation, and single-screw (single screw) pump is that single screw rod exists
The pump of engagement rotation in the internal thread groove of the pump housing, prior art is present due to screw rod discontinuity equalization, caused inhalation power compared with
Small the problem of.
The content of the invention
The present invention provides a kind of three screw pump, exists to solve to propose prior art in above-mentioned background technology due to screw rod
Discontinuity equalization, the less problem of caused inhalation power.
Technical problem solved by the invention is realized using following technical scheme：A kind of three screw pump, including suction inlet,
The annular seal space that the suction inlet is cooperatively formed through bushing and three sealings for being mutually twisted screw rod being parallel to each other in it is run through
Outlet.
Further, described three wherein one screw rods for being mutually twisted screw rod are driving screw rod, the driving screw rod side
End is connected the first driven screw, and another side of driving screw rod is connected the second driven screw.
Further, described three are mutually twisted screw rod and are connected to rolling bearing.
Further, pump housing one end connection protecgulum, its other end connection bonnet.
Further, the annular seal space can connection safety valve.
Further, the safety valve includes straight through safety valve.
Further, the straight through safety valve includes inlet, and the inlet is connected to first body cavity one end, institute
State the first body cavity other end and be connected to liquid outlet through valve element, described first valve body one end connects in bonnet, the bonnet and pushed up
Connecting spring seat one end is held, the spring base other end connects the valve element of the first body cavity through spring.
Further, spring base one end connection adjusting screw.
Advantageous effects：
1st, three sealings for being mutually twisted screw rod that this patent is parallel to each other using the suction inlet through bushing and in it are matched somebody with somebody
Close the annular seal space formed and run through outlet, during pump work, engage, pretend because two driven screws and driving screw rod are symmetrical
With the radial load complete equipilibrium in driving screw rod, driving screw rod is not subject to bend loading.Driven screw force in radial along its
Whole length is all supported by acceleration cylinder liner, because three screw rods are for single screw rod and twin-screw, between three screw rods
Stress evenly, adds the inhalation power and flow of screw pump.
2nd, this patent uses described three wherein one screw rods for being mutually twisted screw rod for driving screw rod, the driving screw rod
One side is connected the first driven screw, and another side of driving screw rod is connected the second driven screw, described three
It is mutually twisted screw rod and is connected to rolling bearing, because the rolling bearing of pump seal intracavitary plays fixed mobile jib position,
And the weight of three screw rods of vertical pump is born, three screw rods form what is at the uniform velocity moved vertically when engaging rotation between flute profile
Annular seal space, outlet is smoothly transported to by import by liquid, and the axial force acted on the flank of tooth is balanced by dummy piston, therefore,
Bearing is subjected only to remaining axial force.
3rd, this patent using the annular seal space can connection safety valve, the safety valve includes straight through safety valve, described straight
Formula safety valve includes inlet, and the inlet is connected to first body cavity one end, the first body cavity other end
Liquid outlet is connected to through valve element, described first valve body one end connects top connecting spring seat one end in bonnet, the bonnet, described
The spring base other end connects the valve element of the first body cavity through spring, and described spring base one end connects adjusting screw, due to screw rod
Pump is as other displacement pumps, when the outlet of pump is completely enclosed, and the pressure in pump, which will rise to, to be damaged pump or make electricity
The degree of danger of motivation overload.So, at the suction/exhousting hole of pump, safety valve is just must be provided with, annular seal space passes through returning on bushing
Oil pipe is communicated with suction chamber, and pressure is dominated by the pressure of suction chamber, and control valve is housed on annular seal space, and adjustment valve spring can make sealing
Chamber obtains relatively low malleation, prevents gas from entering and seal running dry, and pre-compressed spring can make to produce certain pressure, chamber at axle envelope
Interior pressure in 0.05~0.1MPa, should improve the security of three screw pump.
Brief description of the drawings
Fig. 1 is a kind of structural representation of three screw pump of the invention；
Fig. 2 is a kind of profile of three screw pump of the invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing：
In figure：1- suction inlets, 2- bushings, 3- annular seal spaces, 4- outlets, 5- driving screw rods, the driven screws of 6- first, 7-
Two driven screws, 8- rolling bearings, 9- safety valves, 10- inlets, the body cavities of 11- first, 12- valve elements, 13- liquid outlets,
14- bonnets, 15- spring bases, 16- springs, 17- adjusting screws.
Embodiment：
The present embodiment：As shown in figure 1, a kind of three screw pump, including suction inlet 1, the suction inlet 1 is through in bushing 2 and its
The annular seal space 3 that the sealing that three be parallel to each other are mutually twisted screw rod is cooperatively formed runs through outlet 4.
Cooperatively formed due to the three piece sealings that are mutually twisted screw rod of the suction inlet through being parallel to each other in bushing and its
Annular seal space runs through outlet, during pump work, is engaged because two driven screws and driving screw rod are symmetrical, pretends used in actively
Radial load complete equipilibrium on screw rod, driving screw rod is not subject to bend loading.Driven screw force in radial is along its whole length
All supported by acceleration cylinder liner, because three screw rods are for single screw rod and twin-screw, the stress between three screw rods is more equal
It is even, add the inhalation power and flow of screw pump.
Described three wherein one screw rods for being mutually twisted screw rod are driving screw rod 5, the side of driving screw rod 5 one occlusion
Connect the first driven screw 6, another side of the driving screw rod 5 is connected the second driven screw 7.
Described three are mutually twisted screw rod and are connected to rolling bearing 8.
Because described three wherein one screw rods for being mutually twisted screw rod are driving screw rod, the side of driving screw rod one is stung
The first driven screw of connection is closed, another side of driving screw rod is connected the second driven screw, and described three are mutually twisted
Screw rod is connected to rolling bearing, because the rolling bearing of pump seal intracavitary plays fixed mobile jib position, and bears to stand
The weight of three screw rods of formula pump, three screw rods form the annular seal space at the uniform velocity moved vertically when engaging rotation between flute profile,
Liquid is smoothly transported to outlet by import, the axial force acted on the flank of tooth is balanced by dummy piston, therefore, and bearing is only held
By remaining axial force.
Described pump housing one end connects protecgulum, its other end connection bonnet.
The annular seal space 3 can connection safety valve 9.
The safety valve 9 includes straight through safety valve 9.
The straight through safety valve 9 includes inlet 10, and the inlet 10 is connected to the one end of the first body cavity 11, institute
State the other end of the first body cavity 11 and be connected to liquid outlet 13 through valve element 12, described first valve body one end connects bonnet 14, described
15 one end of top connecting spring seat in bonnet 14, the other end of spring base 15 connects the first body cavity 11 through spring 16
Valve element 12.
Described one end of spring base 15 connects adjusting screw 17.
Due to the annular seal space can connection safety valve, the safety valve includes straight through safety valve, through type safety
Valve includes inlet, and the inlet is connected to first body cavity one end, and the first body cavity other end connects through valve element
Liquid outlet is connected to, described first valve body one end connects top connecting spring seat one end in bonnet, the bonnet, and the spring base is another
One end connects the valve element of the first body cavity through spring, and described spring base one end connects adjusting screw, due to screw pump and other
Displacement pump is the same, when the outlet of pump is completely enclosed, and the pressure in pump, which will rise to, to be damaged pump or make electromotor overload
Degree of danger.So, at the suction/exhousting hole of pump, safety valve is just must be provided with, annular seal space passes through the oil return pipe on bushing and suction
Enter chamber to communicate, pressure is dominated by the pressure of suction chamber, control valve be housed on annular seal space, adjustment valve spring can make annular seal space obtain compared with
Low malleation, prevents gas from entering and seal running dry, and pre-compressed spring can make to produce certain pressure at axle envelope, and cavity pressure should
In 0.05~0.1MPa, the security of three screw pump is improved.
Operation principle：
The sealing that this patent is mutually twisted screw rod by three of the suction inlet through being parallel to each other in bushing and its coordinates
The annular seal space of formation runs through outlet, during pump work, is engaged because two driven screws and driving screw rod are symmetrical, pretends use
Radial load complete equipilibrium in driving screw rod, driving screw rod is not subject to bend loading.Driven screw force in radial is whole along its
Individual length is all supported by acceleration cylinder liner, because three screw rods are for single screw rod and twin-screw, between three screw rods by
Power evenly, adds the inhalation power and flow of screw pump, and the present invention, which solves prior art, to be present due to screw rod unbalance stress
Weighing apparatus, the less problem of caused inhalation power, with inhalation power and flow it is big, mitigate bearing endurance, it is safe beneficial
Technique effect.
Using technical scheme, or those skilled in the art is under the inspiration of technical solution of the present invention, design
Go out similar technical scheme, and reach above-mentioned technique effect, be to fall into protection scope of the present invention.
Claims (8)
1. a kind of three screw pump, it is characterised in that including suction inlet, three through being parallel to each other in bushing and its of the suction inlet
It is mutually twisted the annular seal space that the sealing of screw rod cooperatively forms and runs through outlet.
2. a kind of three screw pump according to claim 1, it is characterised in that described three be mutually twisted screw rod wherein one
Root screw rod is driving screw rod, and the side of driving screw rod one is connected the first driven screw, another side of driving screw rod
Be connected the second driven screw.
3. a kind of three screw pump according to claim 2, it is characterised in that described three are mutually twisted screw rod and connect respectively
In rolling bearing.
4. a kind of three screw pump according to claim 1, it is characterised in that described pump housing one end connects protecgulum, and its is another
End connection bonnet.
5. a kind of three screw pump according to claim 1, it is characterised in that the annular seal space can connection safety valve.
6. a kind of three screw pump according to claim 5, it is characterised in that the safety valve includes straight through safety valve.
7. a kind of three screw pump according to claim 6, it is characterised in that the straight through safety valve includes inlet,
The inlet is connected to first body cavity one end, and the first body cavity other end is connected to liquid outlet through valve element, institute
Top connecting spring seat one end in first valve body one end connection bonnet, the bonnet is stated, the spring base other end connects through spring
Connect the valve element of the first body cavity.
8. a kind of three screw pump according to claim 7, it is characterised in that described spring base one end connects adjusting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265955.3A CN107035683A (en) | 2017-04-21 | 2017-04-21 | A kind of three screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265955.3A CN107035683A (en) | 2017-04-21 | 2017-04-21 | A kind of three screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107035683A true CN107035683A (en) | 2017-08-11 |
Family
ID=59536204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710265955.3A Pending CN107035683A (en) | 2017-04-21 | 2017-04-21 | A kind of three screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107035683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286516A (en) * | 2018-01-15 | 2018-07-17 | 陕西科技大学 | The carbon dioxide gas compressor screw oil pump of excess air can be excluded automatically |
| CN108343604A (en) * | 2018-01-15 | 2018-07-31 | 陕西科技大学 | Carbon dioxide gas compressor screw oil pump |
-
2017
- 2017-04-21 CN CN201710265955.3A patent/CN107035683A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286516A (en) * | 2018-01-15 | 2018-07-17 | 陕西科技大学 | The carbon dioxide gas compressor screw oil pump of excess air can be excluded automatically |
| CN108343604A (en) * | 2018-01-15 | 2018-07-31 | 陕西科技大学 | Carbon dioxide gas compressor screw oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170811 |
|
| WD01 | Invention patent application deemed withdrawn after publication |