CN100416103C - High pressure roots blower - Google Patents
High pressure roots blower Download PDFInfo
- Publication number
- CN100416103C CN100416103C CNB2004100622260A CN200410062226A CN100416103C CN 100416103 C CN100416103 C CN 100416103C CN B2004100622260 A CNB2004100622260 A CN B2004100622260A CN 200410062226 A CN200410062226 A CN 200410062226A CN 100416103 C CN100416103 C CN 100416103C
- Authority
- CN
- China
- Prior art keywords
- high pressure
- roots blower
- pressure
- cylinder body
- outer cover
- 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
Links
Images
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids 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 radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention relates to a high pressure roots blower, which comprises a cylinder body and an outer cover, wherein the cylinder body is provided with an airflow inlet and an airflow outlet, the middle of the cylinder body is provided with an air chamber, and a space is formed between the cylinder body and the outer cover. The outer cover is provided with one or a plurality of cooling air inlets, and one or a plurality of cooling air outlets, and the cooling air inlet and the cooling air outlets are used for cooling air to pass through. One or a plurality of centrifugal cooling fans is arranged on a rotor shaft and approaches to the inlet and the outlet of the outer cover. The present invention also comprises two wearing band sealing layers of a three-blade rotor, and the internal leakage and the accidental mechanical contact are reduced. In addition, the present invention also comprises a pressure reducing safety valve arranged on an inner cylinder; when the inner pressure of the blower exceeds the critical value of preestablished pressure, the safety valve can automatically open to load and can emit audible early-warning signals. The present invention also comprises a high pressure outlet flange of a bulge sealing surface. The high pressure roots blower can obtain higher pressure rise and pressure ratio and simultaneously reduce the high temperature and the internal leakage which are caused by high pressure, and thus, the efficiency and the reliability of the blower are improved.
Description
Technical field
The present invention relates to the mechanical type blower technical field used in the various commercial Application, belong to double rotor leaf formula blower, be commonly referred to Roots blower.
Background technique
Roots blower is widely applicable for various commercial Application.Use the blower language, (pressure is 0.35～1.05kg/cm with respect to pressing in traditional
2=5-15 pound/square inch), 1.05～1.76kg/cm
2The pressure of (=15-25 pound/square inch) is commonly referred to high pressure.Example application with high pressure ability Roots blower has: the deep trouth aeration tank that modern sewage treatment works uses, the diffusing thing strength of thin or dense phase is carried, or can be used as the vacuum power source.
But, 1.05～1.76kg/cm
2The pressure of (=15-25 pound/square inch), usually be difficult in the one-level compression and obtain, the outlet high temperature that temperature rise that this produces mainly due to the compression ratio of correspondence and the internal leakage by exporting to import that causes owing to voltage rise cause, the high-temperature gas that import is got back in leakage has improved the temperature of import, further increased since higher compression ratios originally with regard to high outlet temperature.
In addition, from angle of mechanics, the outlet temperature of rising has reduced the cylinder that determined by thermal expansion difference and the gap between rotor, and the contact-impact that it may cause rotor rotor interlock is even killed.Simultaneously, the high temperature of exit gas has also improved bearing, and the temperature of synchromesh gear and lubricant oil shortens their life-span, scraps so that finally cause entire machine.
Owing to these reasons, in traditional design, the pressure of Roots blower is limited to 5-15 pound/square inch in principle.Yet Roots blower is extensively liked, because it has the particular performances curve: transformation power and flow is constant adds its rotation compression property.This can conversion pressure and keep the ability of same traffic, make Roots blower become the pneumatic conveying ideal tools of shape material of loosing, because can remove may blocking of the shape material that looses by improving pressure.In addition, use high pressure roots blower, when carrying the diffusing thing of equivalent weight, can use thinner pipeline, can reduce overall volume, weight and the cost of transporting system like this.
Problem at above-mentioned relevant higher temperature has had various trial.Such as, spraying liquid in air-flow, or in cylinder body, add coolant jacket and cool off, or use by the hydronic force-feed lubrication system of external radiator with circulating water.Yet many commercial Application forbid using liquid in air-flow, in case the pollution of stop ring border or transportation of substances.In addition, cooling jacket mode and force-feed lubrication system have increased the cost and the complexity of system.And, when these methods commonly used when attempting to solve the high temperature problem of high pressure roots blower, they have ignored the main cause of problem, just, the internal leakage of blower.
In addition, high-voltage applications has also increased the possibility of leaking at blower export flange place.When gas was pernicious to people, this became very crucial.Traditional low pressure flange, not only around its tube wall, and the screw place all is a sealing surface.Therefore, the surface that sealing is so big needs very high torsional moment to tighten those bolts.
At present, Roots blower has two kinds of safety protection design proposals, and this dual mode all adopts plug structure, and a kind of is temperature-sensitive, and a kind of is pressure-sensitive, when temperature or pressure reaches or when surpassing predefined critical value, diaphragm will break or open.
With regard to the hotness stopper, diaphragm is made by a kind of welding consumables.This material has a predictable melting point, is designed to consistent with the Maximum allwable temperature of blower.And the pressure sensitivity stopper, diaphragm be a kind of when pressure reduction surpasses the material stress limit thin slice with fracture.
Yet existing these hotness or the pressure sensitivity stopper that uses all is disposable.In case they break after being triggered, in the quite a while before new stopper is installed, blower is with cisco unity malfunction.In addition, fault pre-alarming is also lacked the signal that can hear.
So our expectation provides a kind of design and structure of new high pressure roots blower, safer to obtain higher pressure and pressure ratio, efficient and reliability are higher, solve the problem that exists in those traditional Roots blowers simultaneously.
Summary of the invention
The technology of the present invention refers to a kind of high pressure roots blower, and it is included in the disjunctor cooling fan on the rotor shaft, the outlet high pressure flange, and the break-in band sealing layer that " rubs " on the rotor surface, and have audible early warning and releasing device on the cylinder body.
A target of the present invention provides a kind of brand-new and unique high pressure roots blower design and structure, makes it under the situation of not using liquid cooling method, can obtain voltage rise and the pressure ratio higher than traditional blower.
Another target of the present invention provides a kind of design and structure of brand-new and unique high pressure roots blower, utilizes the disjunctor cooling fan on rotor shaft effectively to reduce the high temperature that is caused by high pressure.
Another target of the present invention provides a kind of design and structure of brand-new and unique high pressure roots blower, has littler gap and contacts, to improve blower efficiency and reliability.
Another target of the present invention provides a kind of design and structure of brand-new and unique high pressure roots blower, has the raised flanges surface, and moment that need not be bigger just can tighten, simultaneously the higher internal pressure of sealing more effectively.
Another target of the present invention provides a kind of design and structure of brand-new and unique high pressure roots blower, the pressure sensitivity stopper with a recycling type, and when the internal pressure of blower surpassed predefined pressure threshold, it can open unloading automatically.
Another target of the present invention provides a kind of design and structure of brand-new and unique high pressure roots blower, and it sends the audible early warning signal after the decompression plug is triggered.
High pressure roots blower of the present invention, including one has airflow inlet, flow outlet and is the cylinder body of air cavity therebetween, and cylinder body and outer cover, have living space therebetween, cooling but gas passes through, the outlet of one or more cooling air inlets and one or more cooling air is arranged on outer cover, and cooling but gas passes through.High pressure roots blower of the present invention also comprises the two parallel cloverleaf rotors that are installed in the cylinder, and the synchromesh gear location is arranged on two rotors, and counterrotating promotes air-flow from the import to the outlet.Be equipped with one or more centrifugal cooling fans on the rotor shaft, its position is near the import and the outlet of outer cover, with the cooling air that circulates between outer cover and cylinder body.High pressure roots blower of the present invention further comprises being installed on two leafy epitrochanterian break-in band sealing layers, contacts with accidental mechanicalness to reduce internal leakage.In addition, the present invention comprises that also one is installed on the pressure regulator on the cylinder body, when the internal pressure of blower surpasses predefined pressure threshold, it is opened automatically and unloads, and send the audible early warning signal, high pressure roots blower of the present invention, the high-pressure outlet flange on raised seals surface in addition.High pressure roots blower of the present invention can obtain higher voltage rise and pressure ratio, reduces high temperature and internal leakage that high pressure causes simultaneously, therefore the efficient and the reliability of having promoted blower.
The present invention has a lot of novelties and exclusive feature and advantage.It provides a kind of brand-new and unique high pressure roots blower design and has made, and can obtain voltage rise and the pressure ratio higher than traditional blower when not using the conventional liq cooling means.It also has littler gap and contacts, to improve blower efficiency and reliability.High pressure roots blower of the present invention by the disjunctor cooling fan, has effectively reduced bearing, the temperature of gear and lubricant oil.In addition, it is by using the raised seals surface, and moment that need not be bigger just can tighten, and more effectively seals higher internal pressure simultaneously.It further provides the pressure regulator of recycling type, after it is by pressure activated, sends the audible early warning signal.
These and other novelty and target of the present invention are with by following relevant diagrammatic sketch and literal detailed description and more clear.
Description of drawings
With reference to relevant illustrated purpose only is in order to illustrate, but is not limited to diagram, now is described as follows:
Fig. 1 (prior art) is a cross-sectional view, and the typical case of a traditional Roots blower of expression arranges;
Fig. 2 (prior art) is a left view, and the typical case of a traditional Roots blower of expression arranges;
Fig. 3 is a cross-sectional view, a best implementation of expression high pressure roots blower of the present invention;
Fig. 4 is a left view, a best implementation of expression high pressure roots blower of the present invention;
Fig. 5 (prior art) is a stereogram, the rotor of a traditional Roots blower of expression;
Fig. 6 (prior art) is a partial enlarged drawing, the part of a traditional Roots Blower Rotor of expression;
Fig. 7 is a stereogram, a best implementation of expression high pressure roots blower of the present invention: the break-in band sealing layer that is positioned at rotor tip;
Fig. 8 is that enlarged view is looked on a left side, a best implementation of expression high pressure roots blower of the present invention: be positioned on the rotor blade profile curved surface and the break-in band sealing layer at top;
Fig. 9 is that enlarged view is looked on a left side, and a best implementation of expression high pressure roots blower of the present invention: another kind is positioned at the break-in band sealing layer of rotor tip;
Figure 10 (prior art) is a local figure, represents the binding flange on the traditional Roots blower;
Figure 11 (prior art) is a left view, represents the binding flange on the traditional Roots blower;
Figure 12 is a local figure, the high pressure adpting flange on the high pressure roots blower of the best implementation of expression the present invention;
Figure 13 is a partial left side view, the high pressure adpting flange on the high pressure roots blower of the best implementation of expression the present invention;
Figure 14 is a cross-sectional view, and the audible pressure regulator that uses on the high pressure roots blower of the best implementation of expression the present invention: valve is in the enable possition;
Figure 15 is a cross-sectional view, and the audible pressure regulator that uses on the high pressure roots blower of the best implementation of expression the present invention: valve is in the closed position;
Embodiment
Although describe specific implementation of the present invention with reference to relevant diagram below, should be appreciated that the implementation here only is as an example and illustrates that other scheme that can realize according to principle of the present invention then has a variety of.Clearly, for the people who is familiar with these technologies, various variations and modification in category of the present invention will be considered to belong to spirit of the present invention, the row of scope and consideration, and this will be further clear and definite in additional claim.
Make an A brief introduction, high pressure roots blower of the present invention, including one has airflow inlet, flow outlet and is the cylinder body of air cavity therebetween, and cylinder body and outer cover, have living space therebetween, cooling but gas passes through, and one or more cooling air inlets are arranged on outer cover, with one or more cooling air outlets, cooling but gas passes through.
High pressure roots blower of the present invention also comprises the two parallel leafy formula rotors that are installed in the cylinder body, and two rotating shafts are by the bearing support in the cylinder body, and by the synchromesh gear location, two rotor counterrotatings promote air-flow and flow to outlet from import.One or more centrifugal cooling fans are installed on the rotor shaft, and its position is near the import and the outlet of outer cover, with the cooling air that circulates between outer cover and cylinder body.
High pressure roots blower of the present invention further comprises being installed on two leafy epitrochanterian break-in band sealing layers, contacts with accidental mechanicalness to reduce internal leakage.
In addition, the present invention comprises that also one is installed on the pressure regulator on the cylinder body, and when the internal pressure of blower surpassed predefined pressure threshold, it can open unloading automatically, and sending the audible early warning signal, the present invention also includes the high-pressure outlet flange on raised seals surface.
High pressure roots blower of the present invention can obtain higher voltage rise and pressure ratio, reduces high temperature and internal leakage that high pressure causes simultaneously, therefore the efficient and the reliability of having promoted blower.
With reference to Fig. 1 and 2, what show here is the Roots blower 10 of a typical prior art.Generally speaking, Roots blower 10 has two parallel rotors 12, is installed on respectively on the axle 14 and 16, and rotating shaft 14 is driven by external driver device (and do not show), and drives rotating shaft 12 by a pair of synchromesh gear 18 under situation about not being in contact with one another.The rotor 12 of Roots blower 10 is wrapped up by cylinder 20, and two rotating shafts 14 and 16 are supported that by the bearing in the cylinder 24 bearing 24 is that bearing housing 22 supports, and the next door is sealing 26.
Distance between rotor 12 both ends of the surface and the cylinder body 20 is called " tip-clearance " 30, and the gap of the engagement place between two rotors 12 is called as " gap between leaf " 32, and the gap between rotor 12 tops and cylinder body 20 is called " top clearance " 34.
Because the promotion of rotor 12, figure upward arrow show the flow direction from blower 10 imports 36 to outlet 38 air-flows.
With reference to figure 3 and 4, show one here for realizing the optimum scheme of high pressure roots blower 100 of the present invention.High pressure roots blower 100 of the present invention has two parallel leafy formula rotors 112 that are installed on respectively on the running shaft 114 and 116, here running shaft 114 is driven by an external equipment (and do not show), and under situation about not being in contact with one another, drive rotating shaft 112 by a pair of synchromesh gear 118, to promote import 136 the flowing to outlet 138 of air-flow from blower 100.
The rotor 112 of high pressure roots blower 100 of the present invention is wrapped up by cylinder body 120, and two rotating shafts 114 and 116 are supported that by the bearing in the cylinder body 124 bearing 124 is that bearing housing 122 supports, and the next door is sealing 126.Have living space in the centre of cylinder body 120 and outer cover 128 cooling but gas pass through, airflow direction is shown in arrow among Fig. 3.
As important novelty of the present invention and uniqueness, at the two ends of blower, centrifugal cooling fan 140 has been installed, be used to provide the epistasis cooling.Cooling fan is installed on the extending end of axle 114, near the position of outer cover 128 air intlets 142, is used to suck cooling air.Shown in the arrow of Fig. 3, these gas streams are crossed the space between outer cover 128 and the inner casing 120, are discharged by the air outlet on the outer cover 128 144.
Usually, the outlet temperature of blower not only is subjected to the influence (especially true to high pressure) of leakage reversed flow, and is proportional to pressure ratio.This outside heat more will increase the internal heat that friction is produced in gear and the bearing.Therefore, the cooling fan 140 that is connected on the running shaft 114 of the present invention, simple in structure, can force to remove heat, and not resemble more expensive pressure oil lubricating method or the hydrojet cooling of using in the traditional design from blower 100.
Another novel and unique characteristic of the present invention is to use a plurality of break-in band sealing layers that are positioned on the rotor 112.
As Fig. 1,2, shown in 5 and 6, on the Roots blower 10 of prior art, leakage flow occurs in the both ends of the surface 50 of rotor 12 and the tip-clearance 30 between the cylinder body 20, and between the leaf of the engagement place between two rotors 12 52 gap 32, and the top clearance 34 between rotor 12 tops 54 and cylinder body 20.
High pressure roots blower 100 of the present invention uses novel and unique break-in band to seal and reduces leakage problem.As Fig. 7～shown in Figure 9, in best implementation, for being positioned at the break-in band sealing layer 162 on rotor 112 curved surfaces 152, it is a toothed surfaces.
In addition, perhaps as another selection in the best implementation, rotor top break-in band sealing layer 164 is used in the top 154 of rotor 112, and described break-in band sealing layer 164 is the fin shape.Further replenish, perhaps be used as the selection in another best implementation, rotor tip break-in band sealing layer 160 is used on the both ends of the surface 150 of rotor 112, and described break-in band sealing layer 160 is plane.
Further with reference to Fig. 8, it is pointed out that each rotor that has toothed surfaces is must be with another smooth or be not with the toothed surfaces rotor to be complementary or mesh.This is because if two rotors all have the dentation profile, so owing to slide relative is arranged at mating surface, and will be locked each other and cause the damage of rotor.
Because the use of break-in band sealing layer 160,162 and 164 has produced surface discontinuities in glide direction, has reduced potential area of contact.Therefore, a big sealing surface has become a narrow potted line.New interface more contacts, and once accidental contact only can cause some wearing and tearing, and unlikely rotor is killed.
In addition, by the use of break-in band sealing layer 160,162 and 164, compare with the Roots blower of routine, high pressure roots blower 100 of the present invention can use littler interval.Therefore, internal leakage reduces, and outlet pressure improves, and the Mechanical Reliability of blower is also greatly improved.
Another novel and unique feature of the present invention is to use a high pressure flange to be connected with high pressure roots blower 100.
Referring to Figure 10, Figure 11, the face seal face 72 of the outlet(discharge) flange 70 of traditional Roots blower is flat.When blower export flange 70 same outlet conduits (do not show) when linking together, need clamping bolt (and do not show) with the screw 76 around inserting come fastening it.But, because the sealing surfaces of those flanges is flat, for fastening those bolts need very big moment.
Referring to Figure 12, Figure 13, the present invention has used a high-pressure outlet flange 170, and there is projection at the middle part 174 on its sealing surfaces 172.In this new design, end seal surface 172 concentrates on the middle part.Therefore, the high pressure that this flange can more effective sealing blower export only requires less moment to come clamping bolt (and do not show).In the screw 176 around these bolts insert, by fastening Roots blower outlet(discharge) flange 170 and the outlet conduit (not showing) of linking.
Another novel and unique feature of the present invention, but be on high pressure roots blower 100 of the present invention, to have used can use the also pressure regulator of the sense of hearing again.
Referring to Figure 14, Figure 15, as best implementation, but the pressure regulator 180 of the sense of hearing that demonstration high pressure roots blower 100 of the present invention uses.But the pressure regulator 180 of this sense of hearing is that depended on pressure triggers and can uses repeatedly.There is screw thread 184 its housing 182 outsides, so that be installed on the outlet end cylinder body of Roots blower.
When the pressure from the import 186 of pressure regulator 180 surpasses predefined pressure limit, this pressure will act on the valve ball 190 in the pressure regulator 180, overcome the active force of contained spring 192, thereby come mobile valve ball 190 to open pressure-reduction outlet 188 to alleviate pressure inside.Pressure-reduction outlet 188 is made narrow shape to produce birdie, at high-pressure liquid (shown in the arrow of Figure 14, Figure 15) when passing pressure-reduction outlet 188, but produces the alarm signal of a sense of hearing.
But sense of hearing pressure regulator 180 tops on the high pressure roots blower 100 of the present invention are provided with a nut 194, are used for adjusting the triggering pressure of different application.Least significant end at nut 194 can be equipped with a calibrated scale, and the force value behind calibrate is arranged above.
5000 rev/mins of the commentaries on classics scooters of high pressure roots blower 100 of the present invention, outlet pressure can reach 1.76kg/cm
2(=25 pounds/square inch), outlet temperature often can reach 400F.
High pressure roots blower of the present invention has a lot of advantages.It can not use hydrojet cooling or oil lubrication method, and obtains voltage rise and the pressure ratio higher than traditional drum blower fan.The cooling fan that it is connected on the gear shaft effectively reduces the high temperature that high pressure causes.It is more at the top of rotor, uses break-in band sealing layer on end and the blade profile curved surface, makes that the gap can be littler and contact.In addition, it has also used a high-pressure outlet flange that the raised seals surface is arranged, and does not need very big moment, and can the higher internal pressure of effective seal.The seal approach that these have improved and to the Additional Protection of higher outlet temperature has more increased efficient and the reliability of blower.And high pressure roots blower of the present invention after pressure regulator triggers, but can send sense of hearing early warning signal.After discharging pressurized gas, pressure regulator still can re-use.
In a general sense, the present invention is a kind of high pressure roots blower, comprising: (a) have one to have airflow inlet, flow outlet and be the cylinder body of air cavity therebetween, and cylinder body and outer cover have living space therebetween, cooling but gas passes through, and has a cooled gas import and outlet on the outer cover at least; (b) be installed in two interior parallel leafy rotors of cylinder, two rotating shafts are by the synchromesh gear location, and counterrotating promotes air-flow flowing from import to outlet; (c) have a centrifugal cooling fan at least on two rotor shafts, its position is near at least one import of outer cover, with the cooling air that circulates between outer cover and inner casing; And (d) two leafy epitrochanterian break-in band sealings contact with accidental mechanicalness to reduce internal leakage; (e) this high pressure roots blower can obtain higher voltage rise and pressure ratio, reduces high temperature and internal leakage that high pressure causes simultaneously, has therefore increased the efficient and the reliability of blower.
Certainly, the present invention does not specially arrest and is limited to any special form or configuration, perhaps any concrete implementation and any use of refering in particular to, revealed in this, do not leave the present patent application as mentioned shown in and under the spirit or scope situation described, same essence is fastened and may be changed in various details or pass.Here device of Zhan Shiing or method only are in order to illustrate and to disclose a kind of optimised form of realizing, but not show that all the present invention may be implemented or operate multi-form or change.
Fully according to the patent law rules, the present invention has had considerable description, so that the public technology information announcing of one of relevant at least its avatar to be provided.But such detailed description has no intent to go to limit from any aspect those feature or principles widely of the present invention.
Claims (8)
1. high pressure roots blower, it is characterized in that: it comprises:
A. there is one to have airflow inlet, flow outlet and be the cylinder body of air cavity therebetween, and cylinder body and outer cover, having living space therebetween, cooling but gas passes through, and has a cooled gas import and outlet on the outer cover at least;
B. be installed in two parallel leafy rotors in the cylinder body, two rotor shafts are by the synchromesh gear location, and counterrotating promotes air-flow flowing from import to outlet;
C. have a centrifugal cooling fan at least on two rotor shafts, its position is near at least one import of outer cover, with the cooling air that circulates between outer cover and cylinder body;
D. on two leafy rotors break-in band sealing layer is arranged, contact with accidental mechanicalness to reduce internal leakage.
2. high pressure roots blower according to claim 1, it is characterized in that: it further comprises a centrifugal cooling fan at least in addition on two rotor shafts, its position is near at least one outlet of outer cover, to strengthen the cooling air that circulates between outer cover and cylinder body.
3. high pressure roots blower according to claim 1 is characterized in that: described break-in band sealing layer comprises at least one break-in band sealing layer, is used on each leafy epitrochanterian end face.
4. high pressure roots blower according to claim 1 is characterized in that: said break-in band sealing layer comprises at least one break-in band sealing layer, is used on two leafy epitrochanterian each blade profile curved surfaces.
5. high pressure roots blower according to claim 1 is characterized in that: said break-in band sealing layer comprises at least one break-in band sealing layer, is used in two leafy epitrochanterian tops.
6. high pressure roots blower according to claim 1, it is characterized in that: further comprise a pressure regulator that is installed on the cylinder body, when the internal pressure of blower surpassed predefined pressure threshold, it was opened automatically and unloads, and sends the audible early warning signal.
7. high pressure roots blower according to claim 6 is characterized in that: described pressure regulator is provided with a nut, is used for determining the pressure threshold when said pressure regulator is activated.
8. high pressure roots blower according to claim 1 is characterized in that: further being included in has the high-pressure outlet flange on the blower export, its sealing surfaces middle part projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100622260A CN100416103C (en) | 2004-06-30 | 2004-06-30 | High pressure roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100622260A CN100416103C (en) | 2004-06-30 | 2004-06-30 | High pressure roots blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715654A CN1715654A (en) | 2006-01-04 |
| CN100416103C true CN100416103C (en) | 2008-09-03 |
Family
ID=35821753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100622260A Expired - Fee Related CN100416103C (en) | 2004-06-30 | 2004-06-30 | High pressure roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100416103C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242711B (en) * | 2011-07-05 | 2014-01-01 | 山东省临风鼓风机有限公司 | High-temperature resistant high-pressure-rise type Roots blower |
| CN102619754A (en) * | 2012-04-28 | 2012-08-01 | 山东三牛机械有限公司 | Forced air cooling high-pressure Roots blower |
| CN102705239A (en) * | 2012-06-21 | 2012-10-03 | 南通荣恒环保设备有限公司 | Interlayer type multi-functional bearing pedestal for Roots blower |
| JP6033759B2 (en) * | 2013-11-05 | 2016-11-30 | アネスト岩田株式会社 | Claw pump |
| CN109372749A (en) * | 2018-11-06 | 2019-02-22 | 西安理工大学 | A kind of Roots Blower Rotor end face seal structure |
| CN110735795B (en) * | 2019-11-19 | 2021-04-06 | 西安理工大学 | Annular sealing structure for rotor end face of Roots blower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62203988A (en) * | 1986-02-28 | 1987-09-08 | Inoue Japax Res Inc | Pump |
| US4789314A (en) * | 1986-12-18 | 1988-12-06 | Unozawa-Gumi Iron Works, Ltd. | Multi-section roots vacuum pump of reverse flow cooling type with internal flow division arrangement |
| US4995796A (en) * | 1988-09-05 | 1991-02-26 | Unozawa - Gumi Iron Works, Ltd. | Multi-section roots vacuum pump of reverse flow cooling type |
| DE4232119A1 (en) * | 1992-09-25 | 1994-03-31 | Mes Und Regeltechnik Geraeteba | Double shaft vacuum roots pump - has two rotors forming working and control pistons and housing having overflow valve in discharge aperture with excess pressure valves in side parts on pressure socket |
| US20030035738A1 (en) * | 2001-08-14 | 2003-02-20 | Deok-Kyeom Kim | Roots vacuum pump |
| US20030086804A1 (en) * | 2001-10-04 | 2003-05-08 | Eaton Corporation | Rotary blower with an abradable coating |
-
2004
- 2004-06-30 CN CNB2004100622260A patent/CN100416103C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62203988A (en) * | 1986-02-28 | 1987-09-08 | Inoue Japax Res Inc | Pump |
| US4789314A (en) * | 1986-12-18 | 1988-12-06 | Unozawa-Gumi Iron Works, Ltd. | Multi-section roots vacuum pump of reverse flow cooling type with internal flow division arrangement |
| US4995796A (en) * | 1988-09-05 | 1991-02-26 | Unozawa - Gumi Iron Works, Ltd. | Multi-section roots vacuum pump of reverse flow cooling type |
| DE4232119A1 (en) * | 1992-09-25 | 1994-03-31 | Mes Und Regeltechnik Geraeteba | Double shaft vacuum roots pump - has two rotors forming working and control pistons and housing having overflow valve in discharge aperture with excess pressure valves in side parts on pressure socket |
| US20030035738A1 (en) * | 2001-08-14 | 2003-02-20 | Deok-Kyeom Kim | Roots vacuum pump |
| US20030086804A1 (en) * | 2001-10-04 | 2003-05-08 | Eaton Corporation | Rotary blower with an abradable coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1715654A (en) | 2006-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102089523B (en) | Compressor having capacity modulation system | |
| JPS5911732B2 (en) | Turbo supercharger device | |
| CN206159049U (en) | Split type high temperature magnetic transmission petrochemical industry process pump | |
| CN100416103C (en) | High pressure roots blower | |
| CN105351206A (en) | Segmentation type multi-stage centrifugal pump | |
| CN102374164B (en) | High efficiency fixed displacement vane pump | |
| CN109882424B (en) | High power density centrifugal fan and centrifugal fan control system | |
| US2684034A (en) | Liquid cooling structure for pump shafts | |
| CN206617362U (en) | Screw rod of screw pump with heating arrangement | |
| CN107654382A (en) | A kind of durable single-stage non-leakage syrup pump | |
| CN209261833U (en) | Multistage pump | |
| CN104619968A (en) | Turbocharger shaft seal | |
| US6817844B1 (en) | Rotary blower with forced external air cooling | |
| WO2016160414A1 (en) | Balance piston with a sealing member | |
| US2719001A (en) | Positive displacement pump with dual coacting flexible vane-type impellers | |
| CN109209898A (en) | Multistage pump | |
| CN205401146U (en) | Festival segmentation multistage centrifugal pump | |
| EP3274588B1 (en) | Heat shield for pressure casing | |
| CA2142853A1 (en) | Regenerative pump | |
| CN203548315U (en) | Main shaft dry-type operation magnetic pump | |
| EP2984344B1 (en) | System and method for compressing carbon dioxide | |
| CN203098284U (en) | Roots vacuum pump | |
| CN209781124U (en) | But cycloid hydraulic motor of explosion-proof self preservation protection | |
| CN109268271B (en) | Fixed scroll and compressor with same | |
| CN207349107U (en) | Magnetic force pump installation is protected suitable for the secondary source of the gas for conveying the medium containing granule foreign |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080903 Termination date: 20160630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |