CN205918594U - Multistage dry -type roots vacuum pump - Google Patents
Multistage dry -type roots vacuum pump Download PDFInfo
- Publication number
- CN205918594U CN205918594U CN201620716257.1U CN201620716257U CN205918594U CN 205918594 U CN205918594 U CN 205918594U CN 201620716257 U CN201620716257 U CN 201620716257U CN 205918594 U CN205918594 U CN 205918594U
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- CN
- China
- Prior art keywords
- pump
- rotor
- inner chamber
- chamber
- roots vaccum
- 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.)
- Expired - Fee Related
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- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a multistage dry -type roots vacuum pump, the pump body (1) includes and wraps up in outer cooling water spacer (1.1), the inner chamber of the pump body (1) is separated for a plurality of mutually independent pump chambers along its axial, each pump chamber include inner chamber (1.2) and be located inner chamber (1.2) with cooling water spacer (1.1) between exocoel (1.3) be linked together inner chamber (1.2) and exocoel (1.3) of adjacent pump chamber around, the pump body (1) interior cross -under has spool (6), and axle (6) is gone up the cover and is equipped with many antitrochanters (5), is provided with an antitrochanter (5) in each pump chamber, and rotor (5) include intermeshing and are arranged in power rotor (5.1) and slave drive rotator (5.2) of inner chamber (1.2), and power rotor (5.1) and slave drive rotator (5.2) difference suit is on driving shaft (6.1) and driven shaft (6.2). The utility model relates to a multistage dry -type roots vacuum pump, simple structure, convenient to use, fault rate are hanged down and can be reached more high vacuum degree requirement.
Description
Technical field
This utility model is related to a kind of vacuum pump, especially relates to a kind of dry type Roots vaccum pump of multi-level form, and it is no
Oily pollution no waste gas, no discharging of waste liquid and can reach the high multi-stage dry Roots vaccum pump of more condition of high vacuum degree, belong to vacuum pump
Technical field.
Background technology
At present, also there are all kinds of vacuum pumps using high energy consumption, high pollution discharge in a large number in vacuum application, such as use
The oil-sealed vacuum pumps such as the sliding vane rotary vacuum pump of a large amount of oil consumptions and waste gas discharge, sliding valve vacuum pump, and high energy consumption and existing gives up in a large number
Liquid, the liquid-ring vacuum pump of waste gas discharge, these vacuum pumps have been not suitable with the requirement to energy-conserving and environment-protective low emission for the country at present；
Meanwhile, conventional Roots vaccum pump is single-stage Roots vaccum pump, the vacuum that single-stage Roots vaccum pump can reach
Degree is limited, and in order to meet more condition of high vacuum degree requirement, conventional mode is by multiple lists by connecting pipe and external cooler
Level Roots vaccum pump is cascaded, and the multi-stage roots vacuum pump group of this form has multiple motor and many set cooling devices,
There is complex structure, bulky defect in the multi-stage roots vacuum pump group of the composition made in this way, and control multiple
Miscellaneous, fault rate is higher.
Content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provide that a kind of structure is simple, easy to use, fault rate is low and
The multi-stage dry Roots vaccum pump of more condition of high vacuum degree requirement, the rotor machining of multi-stage dry Roots vaccum pump of the present invention can be reached
Simpler than the screw rod of dry screw vacuum pump is processed, the manufacturing cost of therefore multi-stage dry Roots vaccum pump has more advantage, and
And with dry screw vacuum pump contrast, multi-stage dry Roots vaccum pump has that fault is low, easy to maintenance, use cost is more low all
Many advantages, marketing can be more prone to, and interior can extensively be applied very much multi-field；
Meanwhile, constitute the ratio of the volume of the front stage of pumps at different levels of this patent multi-stage dry Roots vaccum pump according to a certain ratio
Distribution, this proportioning can reduce the compression ratio between Roots vaccum pumps at different levels, so can reduce the temperature rise of Roots vaccum pump
And power consumption, not only economized on electricity, economized on water but also Roots vaccum pump can be made well to run in alap temperature range.
The purpose of this utility model is achieved in that
A kind of multi-stage dry Roots vaccum pump, described multi-stage dry Roots vaccum pump includes the pump housing, and the described pump housing comprises
Have a cooling water spacer being wrapped in outer layer, the inner chamber of the described pump housing along its axially spaced for multiple separate pump chambers, each
Individual pump chamber includes inner chamber and positioned at the exocoel between inner chamber and cooling water spacer, the inner chamber of adjacent pump chamber and exocoel in front and back
Being connected, (inner chamber is suction muffler, and exocoel is discharge chamber, and the discharge chamber of previous stage pump chamber is connected with the suction muffler of rear stage pump chamber
Logical)；
Wear in the pump housing and be connected to axle, described axle is set with multipair rotor, in each pump chamber, be provided with a pair of rotor, rotor
Include engage each other and be located at inner chamber in power rotor and driven rotor, and power rotor and driven rotor be set with
On driving shaft and driven shaft.
A kind of this utility model multi-stage dry Roots vaccum pump, the two ends of the described pump housing are provided with end cap, and described active turns
Son and driven rotor are all erected between two end caps, and left and right two end cap is separately installed with offside tank and offside tank,
In described offside tank, gear is installed, described gear is a pair intermeshing synchromesh gear, this two synchromesh gears are respectively
It is sleeved on driving shaft and driven shaft.
A kind of this utility model multi-stage dry Roots vaccum pump, the molded lines of rotor of rotor is trilobal cross involute structure.
A kind of this utility model multi-stage dry Roots vaccum pump, between power rotor and driven rotor and rotor and pump
Gap between body is 0.2mm.
A kind of this utility model multi-stage dry Roots vaccum pump, the inner chamber of first order pump chamber is connected with air entry, and inhales
QI KOU with treat vacuum-pumping container and be connected；Exocoel is connected with air vent.
Operation principle of the present utility model is:
Multi-stage rotor is fixed on axle, and axle is supported on the end cap of pump housing both sides by bearing, in offside tank
A pair of synchromesh gear drives rotor to do constant speed counter rotational movement in the pump housing, and the mechanical seal in offside tank makes main shaft overhanging
By vacuum pump and isolated from atmosphere, the shaft coupling on main shaft top is connected with the shaft of motor at end；The power of motor is passed by shaft coupling
It is delivered to main shaft, then transferred power on driven shaft by synchromesh gear；Air entry is connected with being evacuated container, air vent with
Air connects.
Compared with prior art, the beneficial effects of the utility model are:
Multi-stage roots vacuum pump is arranged in the pump chambers at different levels in the same pump housing this utility model, by pump body
Multi-stage dry Roots vaccum pump is coupled in series by these separate pump chambers, that is, the air entry of previous stage with after
The air vent of one-level is connected；The cooling system of vacuum pump is equally directly arranged in the internal cooling water spacer of the pump housing, thus
Avoid loaded down with trivial details gas and cooling water pipeline connects and control system is easier；The structure of multi-stage dry Roots vaccum pump is tight
Gather, and directly cool down than external cooling effect more more preferably, multi-stage dry Roots vaccum pump shares a motor and a set of cold
But device, therefore multi-stage dry Roots vaccum pump have the advantages that compact conformation, small volume, energy consumption be low, installation.
Brief description
Fig. 1 is a kind of structural representation of this utility model multi-stage dry Roots vaccum pump.
Fig. 2 is the cross-sectional view at a kind of pump housing of this utility model multi-stage dry Roots vaccum pump.
Fig. 3 is the cross section view at a kind of prime pump chamber of this utility model multi-stage dry Roots vaccum pump.
Fig. 4 is the cross section view at a kind of rear class pump chamber of this utility model multi-stage dry Roots vaccum pump.
Wherein:
The pump housing 1, end cap 2, offside tank 3, gear 4, rotor 5, axle 6, offside tank 7, shaft coupling 8, motor 9, air entry
10th, air vent 11, base 12；
Cooling water spacer 1.1, inner chamber 1.2, exocoel 1.3；
Power rotor 5.1, driven rotor 5.2；
Driving shaft 6.1, driven shaft 6.2.
Specific embodiment
Referring to Fig. 1 ~ 4, a kind of multi-stage dry Roots vaccum pump that this utility model is related to, described multi-stage dry Roots vacuum
Pump includes the pump housing 1, and the described pump housing 1 includes the cooling water spacer 1.1 being wrapped in outer layer, and the inner chamber of the described pump housing 1 is along its axle
To being divided into multiple separate pump chambers, each pump chamber include inner chamber 1.2 and be located at inner chamber 1.2 and cooling water every
It is interconnected between exocoel 1.3(inner chamber 1.2 between set 1.1 and exocoel 1.3), adjacent pump chamber inner chamber 1.2 and exocoel 1.3 in front and back
Be connected (inner chamber 1.2 is suction muffler, and exocoel 1.3 is discharge chamber, as shown in figure 4, the discharge chamber of previous stage pump chamber and rear stage pump
The suction muffler in chamber is connected)；
Wear in the pump housing 1 and be connected to axle 6, described axle 6 is set with multipair rotor 5, in each pump chamber, is provided with a pair of rotor
5, rotor 5 includes the power rotor 5.1 engaging each other and being located in inner chamber 1.2 and driven rotor 5.2, and power rotor 5.1
It is set with driving shaft 6.1 and driven shaft 6.2 with driven rotor 5.2；
Concretely, the two ends of the described pump housing 1 are provided with end cap 2, described power rotor 5.1 and the equal frame of driven rotor 5.2
It is located between two end caps 2, left and right two end cap 2 is separately installed with offside tank 3 and offside tank 7, described offside tank 3
Gear 4 is inside installed, described gear 4 is a pair intermeshing synchromesh gear, this two synchromesh gears are set in actively
On axle 6.1 and driven shaft 6.2, so that synchronous backward rotates on driving shaft 6.1 and driven shaft 6.2, described driving shaft 6.1 is worn
Through being connected with motor 9 by shaft coupling 8 after crossing offside tank 7；
Preferably, the sealing of the pump housing 1 adopts mechanical seal structure, in each pump chamber between each pair of rotor, rotor and the pump housing
Inner chamber all keeps certain interval, so not needing during rotor operation to lubricate, pump chamber is oil-free structure；Cooling water in pump housing separate space
It is full of cooling water, such pump does not operationally need to configure extra chiller in spacer.
Meanwhile, the molded lines of rotor of rotor 5 employs trilobal cross involute structure, and the Roots using SANYE involute rotor is true
Empty pump can decline 30% about than the temperature rise of two leaf rotor Roots vaccum pumps, and pumping efficiency can improve 20% about；
Further, the gap between power rotor 5.1 and driven rotor 5.2 and between rotor 5 and the pump housing 1 is
0.2mm；
During use, the inner chamber 1.2 of first order pump chamber is connected with air entry 10, and air entry 10 with treat vacuum-pumping container phase
Connection；Exocoel 1.3 is connected with air vent 11, directly idle discharge is put；
In addition: it should be noted that above-mentioned specific embodiment is only a prioritization scheme of this patent, the skill of this area
Any change or improvement that art personnel are done according to above-mentioned design, all within the protection domain of this patent.
Claims (5)
1. a kind of multi-stage dry Roots vaccum pump, described multi-stage dry Roots vaccum pump include the pump housing (1) it is characterised in that:
The described pump housing (1) includes the cooling water spacer (1.1) being wrapped in outer layer, and the inner chamber of the described pump housing (1) is axially spaced along it to be
Multiple separate pump chambers, each pump chamber includes inner chamber (1.2) and is located at inner chamber (1.2) and cooling water spacer
(1.1) exocoel (1.3) between, in front and back the inner chamber (1.2) of adjacent pump chamber be connected with exocoel (1.3)；
Wear in the pump housing (1) and be connected to axle (6), described axle (6) is set with multipair rotor (5), in each pump chamber, is provided with a pair
Rotor (5), rotor (5) includes the power rotor (5.1) engaging each other and being located in inner chamber (1.2) and driven rotor (5.2),
And power rotor (5.1) and driven rotor (5.2) are set with driving shaft (6.1) and driven shaft (6.2).
2. as claimed in claim 1 a kind of multi-stage dry Roots vaccum pump it is characterised in that: the two ends of the described pump housing (1) are installed
End cap (2), described power rotor (5.1) and driven rotor (5.2) is had all to be erected between two end caps (2), left and right two end
It is separately installed with offside tank (3) and offside tank (7) on lid (2), gear (4) is installed in described offside tank (3), described
Gear (4) is a pair intermeshing synchromesh gear, and this two synchromesh gears are set in driving shaft (6.1) and driven shaft
(6.2) on.
3. as claimed in claim 1 a kind of multi-stage dry Roots vaccum pump it is characterised in that: the molded lines of rotor of rotor (5) be three
Blade profile involute structure.
4. as claimed in claim 1 a kind of multi-stage dry Roots vaccum pump it is characterised in that: power rotor (5.1) and driven turn
Gap between sub (5.2) and between rotor (5) and the pump housing (1) is 0.2mm.
5. as claimed in claim 1 a kind of multi-stage dry Roots vaccum pump it is characterised in that: the inner chamber (1.2) of first order pump chamber
It is connected with air entry (10), and air entry (10) is connected with treating vacuum-pumping container；Exocoel (1.3) is connected with air vent (11)
Logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716257.1U CN205918594U (en) | 2016-07-08 | 2016-07-08 | Multistage dry -type roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716257.1U CN205918594U (en) | 2016-07-08 | 2016-07-08 | Multistage dry -type roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205918594U true CN205918594U (en) | 2017-02-01 |
Family
ID=57875324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620716257.1U Expired - Fee Related CN205918594U (en) | 2016-07-08 | 2016-07-08 | Multistage dry -type roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205918594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014995A (en) * | 2016-07-08 | 2016-10-12 | 江阴华西节能技术有限公司 | Multi-stage dry Roots vacuum pump |
-
2016
- 2016-07-08 CN CN201620716257.1U patent/CN205918594U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014995A (en) * | 2016-07-08 | 2016-10-12 | 江阴华西节能技术有限公司 | Multi-stage dry Roots vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 |