CN1120130A - Jet vacuum pump specially for strengthening weak ground by vacuum precompression method - Google Patents
Jet vacuum pump specially for strengthening weak ground by vacuum precompression method Download PDFInfo
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- CN1120130A CN1120130A CN 95104343 CN95104343A CN1120130A CN 1120130 A CN1120130 A CN 1120130A CN 95104343 CN95104343 CN 95104343 CN 95104343 A CN95104343 A CN 95104343A CN 1120130 A CN1120130 A CN 1120130A
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- vacuum
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- centrifugal pump
- jetting device
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Abstract
The jet vacuum pump, an improvement on the Chinese patent No.85108820, for strengthening foundation of building is composed of jet box, jetter, centrifugal pump and electric motor and features that its jetter is horizontally installed to reduce the height and length of connecting vacuum pipe and increase working efficiency, resulting in 90-94 KPa vacuum pressure to foundation. An underwater jet vacuum pump using immersible motor is also disclosed for strengthening underwater soft foundation.
Description
The utility model belongs to the equipment of reinforcing structure foundation, and it is specifically related to a kind of jetting stream vacuum pump structure that is used for the vacuum method construction.
To the reinforcing of the ground degree that is absolutely necessary, it directly influences the quality of construction engineering, the difficulty of processing maximum of weak soil or super soft ground in foundation stabilization before building engineering construction.Give platen press with vacuum widely both at home and abroad in recent years and replaced entity loading method pre-pressing and reinforcing soft earth foundations such as accumulation load method.The key link that vacuum is given in the platen press reinforcing flexible foundation technology is exactly to apply continuous and stable degree of vacuum to get rid of the G﹠W in the basic soil to the basis, Japan and the United States and European countries adopt vacuum pump to operate basically, the deadly defect of vacuum pump be can not long-time continuous work, the investment of this equipment is also higher in addition, works discontinuously to make the less stable of giving the pressure process.The research laboratory that the applicant presides over had once finished the achievement of " vacuum is given the reinforcing soft ground method of pressing " subject study in 85 years, and applied for patent of invention 85108820, wherein adopted special-purpose jet vacuum pump, it is a general jet vacuum pump of just having introduced this brand-new pattern after having broken through large size face of land sealing technology, it is to make jet source with common centrifugal pump, can continuous and economic work in long-time, the G﹠W of discharging in the soil obtains stable high vacuum, make its vacuum give and press reinforcing flexible foundation to achieve success, realized this technology leading position at home and abroad.But its original jet vacuum pump (its structure is seen Fig. 1) also exists some not enough in preceding patent: 1. general structure heaviness, and the big pipeline of casing adopts 4 " steel pipes; 2. the vacuum connecting pipeline is long, and linkage member is many, and loss of vacuum pressure is big, and 3. the liquid jetting device of vacuum jet pump is vertically installed and made the height 1100mm more greatly of its mixing chamber interface and film outlet port, and it is low to make vacuum give pressure efficient.
The purpose of this utility model is in order to overcome three shortcomings that aforementioned jet vacuum pump exists, provide a kind of rational in infrastructure, outside more economical and effective novel jet flow vacuum pump, its decapacitation are worked under identical condition, can also adapt to the harsh climate condition even still can work as usual under water.
By as above design, the jet vacuum pump of the vacuum method reinforcing flexible foundation special use that this programme is addressed is made of jet case, liquid jetting device, centrifugal pump and motor, and its concrete feature is: its liquid jetting device is that substantially horizontal is installed.
Jet case in this programme be above the casing of worn-out mouth, centrifugal pump is mounted on the outside higher platform of jet case, motor is coaxial with centrifugal pump, the intake pipe of centrifugal pump leads to the place ahead of stabilier in the jet case, the water outlet of centrifugal pump connects the jetting orifice of liquid jetting device, the film outlet port of one termination vacuum distributing tube of vacuum connecting tube, the mixing chamber of another termination liquid jetting device, the jetburner of liquid jetting device is positioned at the rear of stabilier.
Another embodiment's vacuum of this programme is given the jet vacuum pump under water of platen press reinforcing flexible foundation special use and is made up of jet case, liquid jetting device, centrifugal pump and motor, it is characterized in that: its liquid jetting device is that level is installed, and what its motor adopted is submersible electric motor.
Jet case in this scheme is a rectangular box of top opening, centrifugal pump is mounted in the inside of jet case, the water intake of centrifugal pump and submersible electric motor coaxial eccentricity pump is positioned at the place ahead of jet case stabilier, the water outlet of centrifugal pump connects the jetting orifice of liquid jetting device, the film outlet port of one termination vacuum distributing tube of vacuum connecting tube, the mixing chamber of another termination liquid jetting device, the jetburner of liquid jetting device is positioned at the rear of jet case stabilier.
Adopt this programme can embody following superiority: 1. adopt centrifugal pump to add liquid jetting device and replace vacuum pump, cost is low, simple in structure, and low being convenient to of expense maintained; 2. changing the liquid jetting device of vertically installing in original jet vacuum pump is that level is installed, the connecting port of vacuum connecting tube mixing chamber and the height difference between the membrane have been reduced, this programme is 250mm and the length that has shortened distance between them, has reduced the loss that vacuumizes, and has improved efficient; 3. use motor instead submersible motor, then centrifugal pump and motor are contained in the jet case and immerse in the water, and the water outlet of centrifugal pump directly linked to each other with the jetting orifice of liquid jetting device, removed the distance of centrifugal pump water outlet and liquid jetting device jetting orifice, can further reduce the loss and raise the efficiency; 4. adopted submersible motor that this jet vacuum pump is worked under water, stronger to the adaptability of the environment of adverse weather condition and job site, as on the limit, seabeach, constructing, can both adapt to the morning and evening tides of seawater.
Fig. 1 is the structural representation of jet vacuum pump used in preceding patent 85108820 patents.
Fig. 2, Fig. 3, Fig. 4 are the structural representations that this programme vacuum is given the jet vacuum pump of platen press reinforcing flexible foundation special use.Fig. 2 is a plan view, and Fig. 3 is the side view of Fig. 2, and Fig. 4 is a plan view.
Fig. 5, Fig. 6 are the structural representations of the special-purpose jet vacuum pump that can work under water of another embodiment of this programme.Fig. 5 is a plan view, and Fig. 6 is the side view of Fig. 5.
Embodiment below in conjunction with description of drawings this programme.Some working measures among the figure under the face of land with 85108820 identical.On the soft base piece of desire processing, uniform on request drainage pipe (17), the sand bedding course (16) of processed foundation surface is led in the upper end of drainage pipe, the vacuum distributing tube (15) surperficial with holes that in sand bedding course, is distributing and be interconnected, on sand bedding course, be covered with sealing film (12), press with press mold low bank between fields (13) around the sealing film, the vacuum distributing tube links by film outlet port (14) and vacuum connecting tube (8), and the pipe point of attachment at film outlet port place is handled through certain seal approach and guaranteed and can not leak gas.Jet case (1) is placed on the face of land and the sealing film (12), on the platform outside the case coaxial motor (4) and centrifugal pump (3) are housed, the water inlet pipe mouth of centrifugal pump leads to a side of stabilier (10) in the jet case, the outlet pipe of centrifugal pump connects the jetting orifice (9) of liquid jetting device (2), vacuum connecting tube (8) is communicated with the mixing chamber (7) of film outlet port and liquid jetting device, and the jetburner of liquid jetting device is positioned at the opposite side of jet case stabilier (10).
Another embodiment of this programme is the special-purpose jet vacuum pump that can work under water, motor in this scheme adopts submersible electric motor (6), coaxial submersible electric motor (6) and centrifugal pump (3) are installed in the jet case (5) and are dipped in the water, the water intake of centrifugal pump is positioned at the place ahead of jet case stabilier (10), the jetting orifice that the water outlet of centrifugal pump (3) is directly received liquid jetting device, other parts are identical with preceding embodiment.
Earlier the jet case is installed water, starting electrical machinery during work, the water in the centrifugal pump extraction case in liquid jetting device sprays into case, has stabilier just can avoid being entered centrifugal pump and reducing its working efficiency by a large amount of bubbles in the agitate water again.Water makes the very high degree of vacuum of formation in mixing chamber from liquid jetting device high speed ejection, import into underground through vacuum connecting tube and vacuum distributing tube, at this moment can be the gentle sucking-off of the water in the soil, under the effect of atmospheric pressure, make at the particle of soil crypto set more face of land sedimentation and obtain solid qualified ground gradually.The jet vacuum pump of preceding patent can cause basic native inside to be subjected to the vacuum pressure of 80-85KPa, reduce and reduced the height and the length of vacuum connecting tube in this programme owing to level installation liquid jetting device, further raise the efficiency, make vacuum pressure that basic native inside is subjected to bring up to 90-94KPa from 80-85, more crypto set is solid to make the grogs of ground.The jet vacuum pump that can work under water that this programme provided further reduces internal duct, more can reduce the loss and raise the efficiency, and for weather conditions and working environment adaptability widely be arranged.
Claims (4)
1, the jet vacuum pump of a kind of vacuum method reinforcing flexible foundation special use, it is made up of jet case (1), liquid jetting device (2), centrifugal pump (3) and motor (4), and the liquid jetting device that it is characterized in that it is that level is installed.
2, according to the jet vacuum pump of the described special use of claim 1, the centrifugal pump (3) that it is characterized in that it is mounted on the higher platform of jet case outside, motor (4) is coaxial with centrifugal pump, the intake pipe of centrifugal pump leads to a side of stabilier (10) in the jet case, the outlet pipe of centrifugal pump connects the jetting orifice (9) of liquid jetting device (2), the jetburner that the film outlet port (14) of one termination vacuum distributing tube (15) of vacuum connecting tube (8), the other end are connected to mixing chamber (7) liquid jetting device of liquid jetting device is positioned at the opposite side of stabilier (10).
3, the jet vacuum pump under water of a kind of vacuum method reinforcing flexible foundation special use, it is made up of jet case (5), liquid jetting device (2), centrifugal pump (3) and motor, the liquid jetting device (2) that it is characterized in that it is that level is installed, and its motor (6) adopts submersible electric motor.
4, according to the jet vacuum pump under water of the described special use of claim 3, it is characterized in that its centrifugal pump (3) is mounted in the inside of jet case (5), centrifugal pump (3) is coaxial with submersible electric motor (6), the water intake of centrifugal pump is positioned at the place ahead of water tank stabilier (10), the water outlet of centrifugal pump (3) directly connects the jetting orifice of liquid jetting device, the film outlet port of one termination vacuum distributing tube of vacuum connecting tube (8), the other end is connected to the mixing chamber (7) of liquid jetting device, and the liquid jetting device jetburner is positioned at the rear of stabilier (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95104343 CN1063832C (en) | 1995-04-22 | 1995-04-22 | Jet vacuum pump specially for strengthening weak ground by vacuum precompression method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95104343 CN1063832C (en) | 1995-04-22 | 1995-04-22 | Jet vacuum pump specially for strengthening weak ground by vacuum precompression method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1120130A true CN1120130A (en) | 1996-04-10 |
| CN1063832C CN1063832C (en) | 2001-03-28 |
Family
ID=5075099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95104343 Expired - Fee Related CN1063832C (en) | 1995-04-22 | 1995-04-22 | Jet vacuum pump specially for strengthening weak ground by vacuum precompression method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063832C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265695A (en) * | 2014-07-31 | 2015-01-07 | 苏州淮通电气有限公司 | Jet flow vacuum pump with adjustable water outlet pressure |
| CN104863904A (en) * | 2015-05-30 | 2015-08-26 | 大连理工大学 | Strong dynamic cyclone ejector |
| CN105822607A (en) * | 2014-07-23 | 2016-08-03 | 吴小再 | Jet vacuum pump |
| CN115262740A (en) * | 2022-08-17 | 2022-11-01 | 中城乡生态环保工程有限公司 | Composite rectification structure for drainage pump station channel |
-
1995
- 1995-04-22 CN CN 95104343 patent/CN1063832C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822607A (en) * | 2014-07-23 | 2016-08-03 | 吴小再 | Jet vacuum pump |
| CN104265695A (en) * | 2014-07-31 | 2015-01-07 | 苏州淮通电气有限公司 | Jet flow vacuum pump with adjustable water outlet pressure |
| CN104265695B (en) * | 2014-07-31 | 2016-05-04 | 苏州赛斯德工程设备有限公司 | Discharge pressure is adjustable jet vacuum pump |
| CN104863904A (en) * | 2015-05-30 | 2015-08-26 | 大连理工大学 | Strong dynamic cyclone ejector |
| CN104863904B (en) * | 2015-05-30 | 2017-03-08 | 大连理工大学 | One kind dynamically strong vortex lead jetting device |
| CN115262740A (en) * | 2022-08-17 | 2022-11-01 | 中城乡生态环保工程有限公司 | Composite rectification structure for drainage pump station channel |
| CN115262740B (en) * | 2022-08-17 | 2024-04-12 | 中城乡生态环保工程有限公司 | Composite rectifying structure for drainage pump station channel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1063832C (en) | 2001-03-28 |
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