CN104976141A - Two-stage water-ring vacuum pump - Google Patents
Two-stage water-ring vacuum pump Download PDFInfo
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- CN104976141A CN104976141A CN201510251227.8A CN201510251227A CN104976141A CN 104976141 A CN104976141 A CN 104976141A CN 201510251227 A CN201510251227 A CN 201510251227A CN 104976141 A CN104976141 A CN 104976141A
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- pump
- impeller
- diversion disk
- pump cover
- twin
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Abstract
The invention provides a two-stage water-ring vacuum pump. The two-stage water-ring vacuum pump comprises a front pump cover, a rear pump cover, a communication pipe, a front guide disk I, a front guide disk II, a rear guide disk I, a rear guide disk II, a front impeller, a rear impeller, a front-stage pump body, a rear-stage pump body, bearing supports and a shaft, wherein the front impeller and the rear impeller are arranged on the shaft, the shaft is fixedly arranged on the front pump cover and the rear pump cover through the bearing shafts at two ends, so that an eccentric structure is formed, and the eccentricity of the front impeller and the rear impeller in a pump body is 24.5 millimeters. The two-stage water-ring vacuum pump has the beneficial effects that the compression ratio of first and second vacuum cavities is adjusted, the eccentricity of the impellers in the pump body is adjusted, and the gaps between the guide disks and the impellers are adjusted, so that the compression ratio of the vacuum pump is improved under the condition that the length and the diameter of the vacuum pump are not increased, the overall compression ratio between an admission port and an exhaust port is about 50 to 1, so that the ultimate vacuum of the vacuum pump is greatly improved, and the power consumption of the operation of the vacuum pump is reduced.
Description
Technical field
The present invention relates to mechanical field, particularly relate to a kind of twin-stage Nash hytor.
Background technique
The vacuum distillation of current many chemical industry, pharmaceutical industry, concentrated, dehydration, dry and power station extract tail gas, all require in suction pressure to be have larger rate of air sucked in required between 33mabr ~ 100mbar.And in filling fields such as beer, requiring under the suction pressure of 80-100mbar, entrance rate of air sucked in required is more than 500m3/ hour.Single-stage water ring vaccum pump, general stable operating point, between 400 ~ 600mbar, does not reach the technological requirement of bulking system.And old-fashioned twin-stage Nash hytor, under equal work operating mode, there is energy consumption high, the problems such as noise is large.
The patent of invention being CN203430810U as notification number discloses twin-stage Nash hytor, and it mainly comprises axle, and the two ends of axle are equipped with back shaft bolster, and rear end is provided with positioning bearing parts; The centre of axle is provided with front pump body device and rear pump body device; Front pump body device comprises the front cover be located on axle, front suction disk, the front pump housing and front exhaust dish, and in the front pump housing, bias is provided with front impeller; Rear pump body device comprises rear suction disk, the rear pump housing, final vacuum dish and rear end cover, and in the rear pump housing, bias is provided with rear impeller; Front cover and being all tightly connected by sealed member between rear end cover and axle.It solve in prior art that single-stage water ring vaccum pump efficient levels is low, power consumption is higher, twin-stage water ring vaccum pump exist that efficiency is low, the deficiency of poor reliability, life-span short and maintenance difficult, but there is the problems such as the high and noise of energy consumption is large.
Summary of the invention
For overcoming the problems such as twin-stage Nash hytor energy consumption is high, noise is large in prior art, the invention provides a kind of twin-stage Nash hytor, concrete technological scheme is as follows:
A kind of twin-stage Nash hytor, comprise front pump cover, rear pump cover, connecting tube, front diversion disk one, front diversion disk two, rear diversion disk one, rear diversion disk, front impeller, rear impeller, the prime pump housing, the rear class pump housing, bearing bracket and axle, front impeller and rear impeller are contained on axle, axle is fixed on front pump cover and rear pump cover by two end supports, form eccentric structure, described front impeller and the offset of rear impeller in the pump housing are 24.5mm.The blade end of impeller and pump housing inside dimension highest order gap 3.2mm are 52.2mm with the minimum of pump housing inside dimension.
Original twin-stage Nash hytor, make its compression ratio improve, and its way is generally the length increasing the pump housing, or increases the diameter of the pump housing and impeller, but the size that can increase integral pump so also causes operate power to improve.And this patent is the gap by adjusting between the eccentric structure of impeller and impeller diversion disk, make to be improved at pump housing compression ratio when length and diameter do not increase, the intakeport of vacuum pump and the overall compression ratio of relief opening reach 50:1.
Further, described front diversion disk two and described rear diversion disk one are provided with sheath shaft two with wheel hub joint, and described sheath shaft two is fixedly connected with described rear diversion disk one with described front diversion disk two.Front diversion disk two, gap between rear diversion disk one and impeller can be regulated by shifting axle sheath two, make its gap at 0.1-0.12mm, every platform equipment uniformly stable speed of exhaust during to reach production.
After every platform vacuum pump surveys and draws diversion disk two and described rear diversion disk one thickness and wheel hub step depth before assembly, by the length of Control Shaft sheath two, ensure the gap of impeller and diversion disk.
Further, organic envelope seat and sheath shaft one are all installed in described axle two ends, and described machine envelope seat, sheath shaft two and described sheath shaft two is annular ring structure.Arranging sheath can avoid inside cavity working solution to touch axle, makes axle in use, is particularly not easily corroded when chemical field is applied.
Further, transition cavity is provided with between described front diversion disk two and described rear diversion disk one.Convenient front diversion disk two and rear diversion disk one are installed, and avoid because the exhaust port size on front diversion disk two and rear diversion disk one differs and have an impact to installation.
Further, the described bearing bracket being positioned at rear end is provided with rear end cover.By regulating the adjustable rear end cover of bolt at rear end cover edge and the distance of bearing bracket.Front pump cover and rear pump cover are equipped with an individual cavity, can directly enter the sealing surface of mechanical seal by external clean water, ensure that vacuum pump is under more severe working environment, mechanical seal still keeps lasting operating life.
Further, the described bearing bracket being positioned at rear and front end is respectively equipped with fore bearing and rear bearing, and described axle two ends are arranged on described fore bearing and rear bearing respectively, hang the solid of rotation forming vacuum pump.
Further, described front pump cover and rear pump cover are connected with standing screw, the prime pump housing and the rear class pump housing are fixed in the middle of front pump cover and rear pump cover.
Further, be provided with water intake outside the described pump cover being positioned at two ends, water can be entered into the rubbing surface of mechanical seal by described water intake, landing temperature lubrication.
Working solution enters pump chamber by front pump cover, because bias is installed after front vane rotary, a centrifugal force can be produced, working solution is made to form the pendular ring of a uniform thickness, upper half part of pendular ring and the wheel hub of front impeller tangent, lower half portion contacts with the end of front impeller blade, now, defines several crescent-shaped spaces in cavity.When current impeller starts to rotate, the crescent shape loculus on the left side knows from experience progressively change greatly, and pressure just constantly lowers, when the pressure of little cavity space is lower than ingress pressure, according to gas pressure intensity equilibrium principle, the gas of ingress will constantly be drawn into little cavity, and now vacuum pump is in breathing process.When blade rotary is to least significant end, and the intakeport between front diversion disk one completely cuts off.Time again toward right rotation, the volume of little cavity just constantly reduces, pressure just constantly increases, this process gas is in compression process, when gas pressure reaches outlet pressure, be discharged to by the relief opening of the gas a part of progressively the past diversion disk one compressed and enter the rear class pump housing connecting tube, another part pressurized gas is by the relief opening of front diversion disk two, and the suction port entering rear diversion disk one enters into the rear class pump housing.The rear class pump housing discharges the gas air-breathing again of coming to the prime pump housing with same principle, compression, exhaust.Just reach the object of vacuum pump to inlet container or pipeline continuous air extraction when pump operates continuously, make inlet container or pipeline reach the vacuum work state of needs.
Compared with prior art, the invention has the beneficial effects as follows:
(1) original twin-stage Nash hytor, its compression ratio is improved, its way is generally increase the length of the pump housing or the diameter of the pump housing, but the size that can increase integral pump so also causes operate power to improve, and this patent is the gap by adjusting between the eccentric structure of impeller and impeller diversion disk, make to be improved at pump housing compression ratio when length and diameter do not increase, make the intakeport of vacuum pump and the overall compression ratio of relief opening reach 50:1;
(2) the twin-stage Nash hytor of the design's invention, use the motor of 15KW just can reach under 80-100mbar sucks suction pressure, entrance rate of air sucked in required reaches 500m3/H, and the inlet pressure of vacuum pump can be made to keep stable.Old-fashioned single-stage water-ring vacuum pump needs the motor being equipped with at least 22KW, just can reach the rate of air sucked in required of 500m3/H, and during work, inlet pressure can fluctuate instability;
(3) sheath shaft three is provided with at front diversion disk two, rear diversion disk one with wheel hub joint, sheath shaft three is fixedly connected with front diversion disk two, rear diversion disk one, can by the adjustment front diversion disk of length adjustment two of sheath shaft three, the gap between rear diversion disk one and impeller, make its gap at 0.1mm, every platform equipment uniformly stable speed of exhaust during to reach production.
Accompanying drawing explanation
Fig. 1 is the present invention's preferably twin-stage Nash hytor sectional view;
In figure: 1, front pump cover; 2, rear pump cover; 3, connecting tube; 4, front diversion disk one; 5, front diversion disk two; 6, rear diversion disk one; 7, rear diversion disk two; 8, front impeller; 9, rear impeller; 10, the prime pump housing; 11, the rear class pump housing; 12, bearing bracket; 15, rear end cover; 16, machine envelope seat; 17, axle; 21, sheath shaft one; 22, sheath shaft two; 23, wheel hub; 25, screw rod; 26, blade; 30, water intake; 80, fore bearing; 81, rear bearing.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Be illustrated in figure 1 the present invention's preferably twin-stage Nash hytor sectional view, comprise front pump cover 1, rear pump cover 2, connecting tube 3, front diversion disk 1, front diversion disk 25, rear diversion disk 1, rear diversion disk 7, front impeller 8, rear impeller 9, the prime pump housing 10, the rear class pump housing 11, bearing bracket 12 and axle 17, front impeller 8 and rear impeller 9 are contained on axle 17, axle 17 is fixed on front pump cover 1 and rear pump cover 2 by two end supports 12, forms eccentric structure; Described front impeller and the offset of rear impeller in the pump housing are 24.5mm.The blade end of impeller and pump housing inside dimension highest order gap 3.2mm are 52.2mm with the minimum of pump housing inside dimension.
Described front diversion disk 25 and described rear diversion disk 1 are provided with sheath shaft 2 22 with wheel hub 23 joint, and described sheath shaft 2 22 is fixedly connected with described rear diversion disk 1 with described front diversion disk 25; Organic envelope seat 16 and sheath shaft 1 are all installed in described axle 17 two ends, and described machine envelope seat 16, sheath shaft 1 and described sheath shaft 2 22 is annular ring structure.
Transition cavity is provided with between described front diversion disk 25 and described rear diversion disk 1; The described bearing bracket 12 being positioned at rear end is provided with rear end cover 15; The described bearing bracket 12 being positioned at rear and front end is respectively equipped with fore bearing 80 and rear bearing 81, and described axle 17 two ends are arranged on described fore bearing 80 and rear bearing 81 respectively, hang the solid of rotation forming vacuum pump; Water intake 30 is provided with outside the pump cover being positioned at two ends; Described front pump cover 1 and rear pump cover 2 are connected with standing screw 25, the prime pump housing 10 and the rear class pump housing 11 are fixed in the middle of front pump cover 1 and rear pump cover 2; Be provided with water intake 30 outside the described pump cover being positioned at two ends, water can be entered into the rubbing surface of mechanical seal by described water intake 30, landing temperature lubrication.
During work, working solution enters pump chamber by front pump cover 1, because bias is installed after front impeller 8 rotates, a centrifugal force can be produced, make working solution form the pendular ring of a uniform thickness, upper half part of pendular ring and the wheel hub 23 of front impeller 8 tangent, lower half portion contacts with the end of front impeller blade, now, several crescent-shaped spaces are defined in cavity.When current impeller 8 starts to rotate, the crescent shape loculus on the left side knows from experience progressively change greatly, and pressure just constantly lowers, when the pressure of little cavity space is lower than ingress pressure, according to gas pressure intensity equilibrium principle, the gas of ingress will constantly be drawn into little cavity, and now vacuum pump is in breathing process.When blade rotary is to least significant end, and the intakeport between front diversion disk 1 completely cuts off.Time again toward right rotation, the volume of little cavity just constantly reduces, pressure just constantly increases, this process gas is in compression process, when gas pressure reaches outlet pressure, be discharged to by the relief opening of the gas a part of progressively the past diversion disk 1 compressed and connecting tube 3 enter the rear class pump housing 11, another part pressurized gas is by the relief opening of front diversion disk 25, and the suction port entering rear diversion disk 1 enters into the rear class pump housing 11.The rear class pump housing 11 discharges the gas air-breathing again of coming to the prime pump housing 12 with same principle, compression, exhaust.Just reach the object of vacuum pump to inlet container or pipeline continuous air extraction when pump operates continuously, make inlet container or pipeline reach the vacuum work state of needs.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (8)
1. a twin-stage Nash hytor, comprise front pump cover (1), rear pump cover (2), connecting tube (3), front diversion disk one (4), front diversion disk two (5), rear diversion disk one (6), rear diversion disk (7), front impeller (8), rear impeller (9), the prime pump housing (10), the rear class pump housing (11), bearing bracket (12) and axle (17), front impeller (8) and rear impeller (9) are contained on axle (17), axle (17) is fixed on front pump cover (1) and rear pump cover (2) by two end supports (12), form eccentric structure, it is characterized in that: described front impeller (8) and the offset of rear impeller (9) in the pump housing are 24.5mm.
2. a kind of twin-stage Nash hytor as claimed in claim 1, described front diversion disk two (5) and described rear diversion disk one (6) are provided with sheath shaft two (22) with wheel hub (23) joint, and described sheath shaft two (22) is fixedly connected with described rear diversion disk one (6) with described front diversion disk two (5).
3. a kind of twin-stage Nash hytor as claimed in claim 1, it is characterized in that, organic envelope seat (16) and sheath shaft one (21) are all installed in described axle (17) two ends, and described machine envelope seat (16), sheath shaft two (21) and described sheath shaft two (22) are annular ring structure.
4. a kind of twin-stage Nash hytor as claimed in claim 1, is characterized in that, is provided with transition cavity between described front diversion disk two (5) and described rear diversion disk one (6).
5. a kind of twin-stage Nash hytor as claimed in claim 1, is characterized in that, the described bearing bracket (12) being positioned at rear end is provided with rear end cover (15).
6. a kind of twin-stage Nash hytor as claimed in claim 1, it is characterized in that, the described bearing bracket (12) being positioned at rear and front end is respectively equipped with fore bearing (80) and rear bearing (81), described axle (17) two ends are arranged on described fore bearing (80) and rear bearing (81) respectively, hang the solid of rotation forming vacuum pump.
7. a kind of twin-stage Nash hytor as claimed in claim 1, it is characterized in that, described front pump cover (1) and rear pump cover (2) are connected with standing screw (25), the prime pump housing (10) and the rear class pump housing (11) are fixed in the middle of front pump cover (1) and rear pump cover (2).
8. a kind of twin-stage Nash hytor as claimed in claim 1, is characterized in that, is provided with water intake (30) outside the described pump cover being positioned at two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251227.8A CN104976141A (en) | 2015-05-15 | 2015-05-15 | Two-stage water-ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251227.8A CN104976141A (en) | 2015-05-15 | 2015-05-15 | Two-stage water-ring vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104976141A true CN104976141A (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510251227.8A Pending CN104976141A (en) | 2015-05-15 | 2015-05-15 | Two-stage water-ring vacuum pump |
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| Country | Link |
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| CN (1) | CN104976141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026737A (en) * | 2018-08-02 | 2018-12-18 | 广州市能动机电设备有限公司 | A kind of centrifugal water pump |
Citations (7)
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|---|---|---|---|---|
| CN2225560Y (en) * | 1995-02-23 | 1996-04-24 | 姚传民 | Two-stage corrosion resistant liquid ring vacuum pump |
| CN2232094Y (en) * | 1995-10-25 | 1996-07-31 | 淄博真空设备厂 | Two stage liquid ring type vacuum pump |
| CN2641336Y (en) * | 2003-09-19 | 2004-09-15 | 李荣奎 | Two stage water ring vacuum pump |
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| CN202811403U (en) * | 2012-08-29 | 2013-03-20 | 崇左森隆林化科技有限公司 | Two-stage water ring pump |
| CN203430810U (en) * | 2013-08-23 | 2014-02-12 | 烟台沃尔姆真空技术有限公司 | Two-stage water-ring vacuum pump |
| CN204877984U (en) * | 2015-05-15 | 2015-12-16 | 赵静 | Doublestage water ring vacuum pump |
-
2015
- 2015-05-15 CN CN201510251227.8A patent/CN104976141A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2225560Y (en) * | 1995-02-23 | 1996-04-24 | 姚传民 | Two-stage corrosion resistant liquid ring vacuum pump |
| CN2232094Y (en) * | 1995-10-25 | 1996-07-31 | 淄博真空设备厂 | Two stage liquid ring type vacuum pump |
| CN2641336Y (en) * | 2003-09-19 | 2004-09-15 | 李荣奎 | Two stage water ring vacuum pump |
| CN2937564Y (en) * | 2006-07-15 | 2007-08-22 | 华锡初 | Water-ring vacuum pump |
| CN202811403U (en) * | 2012-08-29 | 2013-03-20 | 崇左森隆林化科技有限公司 | Two-stage water ring pump |
| CN203430810U (en) * | 2013-08-23 | 2014-02-12 | 烟台沃尔姆真空技术有限公司 | Two-stage water-ring vacuum pump |
| CN204877984U (en) * | 2015-05-15 | 2015-12-16 | 赵静 | Doublestage water ring vacuum pump |
Non-Patent Citations (1)
| Title |
|---|
| 钟红华，张克危: "径向间隙对液环泵临界压缩比的影响", 《水泵技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026737A (en) * | 2018-08-02 | 2018-12-18 | 广州市能动机电设备有限公司 | A kind of centrifugal water pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151014 |