CN201129323Y - Vacuum jet pump - Google Patents
Vacuum jet pump Download PDFInfo
- Publication number
- CN201129323Y CN201129323Y CNU2007201576019U CN200720157601U CN201129323Y CN 201129323 Y CN201129323 Y CN 201129323Y CN U2007201576019 U CNU2007201576019 U CN U2007201576019U CN 200720157601 U CN200720157601 U CN 200720157601U CN 201129323 Y CN201129323 Y CN 201129323Y
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- water
- motor
- pump
- vacuum
- centrifugal
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- Expired - Fee Related
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Abstract
The utility model relates to a vacuum jet pump which comprises a motor, a centrifugal pump and a jet device, wherein the centrifugal pump and the jet device is mounted in an overflow box, the motor is fixed at the outer wall of the overflow box, an output shaft of the motor is inserted in a center hole of a rotating shaft of the centrifugal pump, the motor and the output shaft of the motor are connected via holding screws and keys. The vacuum jet pump has the advantages that the centrifugal pump is convenient and tight in sealing, low in power consumption and long in service life without shock absorber gum covers, the air cooling motor is strong in power and convenient in inspection and maintenance, a water pump is arranged in water, water flow directly enters the jet device without turning and head loss, a water tank employs a water-blocking flange, a centrifugal water-blocking ring and a oil seal to prevent leaking and increase the efficiency of the jet device. The vacuum jet pump is mainly applied to engineering foundation pit drainage, and is also applied to fields needing limiting vacuum such as food and drug, dangerous goods, vacuum drying and the like.
Description
(1) technical field
The utility model belongs to the limiting vacuum pump, particularly a kind of vacuum jet pump.
(2) background technique
Domestic present situation is at present, and motor driving centrifugal water pump current are turned through 90 degree, arrives liquid jetting device and produces negative pressure of vacuum (0.08～-0.092), and its shortcoming is:
1. the shortcoming in Jet injector, used of centrifugal pump
Centrifugal pump will be used filler (asbestos packing) sealing, or mechanical seal.Asbestos packing will add once in per three or five days, had pressed loosely and had leaked, and pressed too tight asbestos can burn out again.The water that leaks from sealing part (asbestos packing) makes working environment untidy, even side slope is washed out, and causes big accident and loss.When constructing in many ways, even also cause each side to disagree because of leaking.Present centrifugal pump is had no idea water-tight, has all stayed water-leaking hole specially from being designed into manufacturing.And, the long-term use, very fast water pump spindle will wear and tear together deep groove, has added asbestos packing at that time, more difficult, the waste plenty of time, the lost labor, so vicious circle, water pump breaks down for a long time and scraps.
It is clear water that mechanical seal needs working environment, and can not avoid silt water in the actual engineering dewatering, and is all to be silt water for a long time.A large amount of silt water under high pressure, the grains of sand are very fast to scratch two smooth finish surfaces of mechanical seal, causes and leaks, pressure descends, degree of vacuum descends, and changes that sealing maintenance one is less important takes more trouble greatly apart, so mechanical seal is unworkable in engineering.
2. motor and centrifugal pump bind mode
Motor and centrifugal pump bind mode generally are the staggered form shaft joints, in the yielding rubber cover is arranged, practice is unlikely in the building site definitely with one heart for motor and centrifugal pump, just because of decentraction, the damping gum cover weares and teares in very short time and will change, and gap will break down in big one or two hour with one heart.Machinery in the actual precipitation is the civilian worker mostly, does not have professional knowledge, adds a bit weaker or motor of rubber quality and water pump screw through vibrations pine slightly, and the damping gum cover is changed will be more frequent.
3. current are turned the loss of head consumed energy
Centrifugal pump is necessary exhaust before startup, and as not exhaust, water just can not circulate sometimes.The connecting means of centrifugal pump and liquid jetting device all is will turn through 90 degree to arrive liquid jetting device in the Jet injector (precipitation pump) of domestic production at present.Through turning loss of head will to be arranged be that consumed power has reduced use power again to current like this, the electricity wasting energy.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, provides a kind of centrifugal pump sealing convenient damping gum cover, the vacuum jet pump low in energy consumption of tightly, not needing.
The utility model is achieved by the following technical solution:
Vacuum jet pump of the present utility model, comprise motor, be installed in centrifugal pump and liquid jetting device in the spill box, its special way is: motor is fixed on the spill box outer wall, and motor output shaft is plugged in the center hole of rotating shaft of centrifugal pump, is connected with key by Cock screw between the two.
Vacuum jet pump of the present utility model, the output tube of liquid jetting device are straight tube, and coaxial with the output tube of centrifugal pump.
Vacuum jet pump of the present utility model is provided with the flange plate that blocks water between the rotating shaft of centrifugal pump and the opening of spill box, and rotating shaft and block water and be provided with oil sealing between the flange plate is positioned at the flange plate inboard that blocks water and is provided with centrifugal water-ring in the rotating shaft.
Vacuum jet pump of the present utility model, the supplying tube of liquid jetting device is provided with vacuum gauge and stop valve.
Vacuum jet pump of the present utility model, motor are ventilated machine.
The working principle of vacuum jet pump of the present utility model is: motor is connected power supply, do not stop counter-rotating in the desired direction through the impeller shaft impeller, be that wheel bottom water forms high pressure through centrifugal the throwing away of impeller in air guide sleeve, discharge through the high-voltage tube nozzle, at this moment current transfer outflow at a high speed to by high pressure, and current at a high speed can be taken away ambient air, make the negative pressure (being vacuum) of formation-0.996Mpa in the liquid jetting device, at this moment underground water enters liquid jetting device by suction sleeve and is discharged into spill box, thereby is drained.Like this, the running impeller that motor does not stop, what the high-velocity flow in the generation high pressure that does not stop, high-velocity flow liquid jetting device did not stop takes away discharge to ambient air and water, and what underground water did not just stop is pumped up.
The beneficial effects of the utility model are, the centrifugal pump sealing is convenient tight, do not need the damping gum cover, low in energy consumption, life-span is long, ventilated machine powerful, maintenance and inspection are conveniently, water pump is in water, current need not to turn and directly enter liquid jetting device, no head loss, thus water tank adopts the flange plate that blocks water, centrifugal water-ring, oil sealing to prevent to leak, and has improved liquid jetting device efficient, mainly be applied to the engineering drainage of foundation pit, also can be applied to the aspect that food medicine, hazmat, vacuum drying etc. need limiting vacuum.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a structural representation of the present utility model.
Among the figure, 1 motor, 2 Cock screws, 3 jump rings, 4 oil sealings, 5 keys, 6 seal washers, 7 flange plate that block water, 8 impeller seals covers, 9 impellers, 10 air guide sleeves, 11 seal washers, 12 vacuum gauges, 13 stop valves, 14 supplying tubes, 15 spill boxs, 16 centrifugal water-rings, 17 rotating shafts, 18 keys, 19 hexagon slotted nuts, 20 cotter pins, 21 high-voltage tubes, 22 nozzles, 23 collapsible tubes, 24 sewage draining exits, 25 drain opening, 26 mixing tubes, 27 diffusing tubes.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Vacuum jet pump of the present utility model, comprise motor 1, be installed in centrifugal pump and liquid jetting device in the spill box 15, motor is fixed on the spill box outer wall, and motor output shaft is plugged in the center hole of rotating shaft 17 of centrifugal pump, is connected with key 5 by Cock screw 2 between the two.The output tube of liquid jetting device is a straight tube, and coaxial with the output tube of centrifugal pump.Be provided with the flange plate 7 that blocks water between the rotating shaft of centrifugal pump and the opening of spill box, rotating shaft and block water and be provided with oil sealing 4 between the flange plate is positioned at the flange plate inboard that blocks water and is provided with centrifugal water-ring 16 in the rotating shaft.The supplying tube 14 of liquid jetting device is provided with vacuum gauge 12 and stop valve 13.Motor is a ventilated machine.
Vacuum jet pump of the present utility model, Jet injector uses ventilated machine, the ventilated machine powerful, maintenance and inspection are convenient, but can not dive under water, and water pump is in water, current need not to turn and directly enter liquid jetting device, no head loss, and the mazy type water tank adopts block water flange plate, centrifugal water-ring, oil sealing, prevent radiator leak, liquid jetting device efficient increases like this.
Vacuum jet pump of the present utility model is provided with oil seal groove in the flange plate that blocks water, and oil sealing and is blocked oil sealing by the jump ring 3 that withstands on the motor fixing seat between the rotating shaft of oil seal groove and impeller, is fixed in the oil seal groove when making oil sealing be enclosed in the impeller shaft rotation.Block water flange plate and water tank perforate junction point is provided with seal washer 6.Block water and be provided with impeller seals cover 8 between the impeller of flange plate and centrifugal pump, impeller produces centrifugal force by rotation and makes a large amount of current enter air guide sleeve to prevent that current from flowing out secondary from wheel bottom and entering in the impeller.Be connected by key 18 between impeller and the rotating shaft 17, there are hexagon slotted nut 19 and cotter pin 20 in the rotating shaft end.Impeller 9 produces centrifugal force by the power rotation of motor shaft, impeller shaft conduction, makes stationary water stream become the current of high speed and high pressure.Air guide sleeve 10 is connected with the big end of impeller, and the centrifugal high-pressure rotary current of impeller can be discharged in the air guide sleeve smoothly.Between the air guide sleeve of centrifugal pump and liquid jetting device, be provided with seal washer 11, high-pressure water flow is not leaked.The vacuum that vacuum gauge 12 is produced by the liquid jetting device position in order to check.Stop valve 13 suction sleeve under the situation of closing could be intake, and when opening, underground water is taken out to be come up, and generally prevents that when machine is wanted stall the water in the water tank from being flowed back to underground.The high-velocity flow that produces during pump operation raises speed current by high-voltage tube 21, nozzle 22 again, high-velocity flow is taken away surrounding atmosphere, make it to form vacuum, underground water enters liquid jetting device and high-pressure water flow mixing spirt spill box by suction sleeve, and the spill box water completely unnecessary water in back is discharged by drain opening.Tapered in the centrifugal water-ring 16, the water that runs up is down gone out by centrifugal, and it cooperates with liner in the middle of the flange plate that blocks water, and water can not be contacted with oil sealing, keeps the oil sealing position anhydrous, and the oil sealing life-span is protected.The output tube of centrifugal pump comprises high-voltage tube 21 and nozzle 22, is formed high pressure by the centrifugal water that comes out of impeller in air guide sleeve, flows to nozzle by high-voltage tube, and the high speed and high pressure water of being come by high-voltage tube is discharged by nozzle current is raised speed once more.The output tube of centrifugal pump is plugged on the top of the output tube of liquid jetting device, and the output tube of liquid jetting device comprises the multistage that thickness does not wait, and an end of close centrifugal pump is a collapsible tube, is followed successively by mixing tube 26, diffusing tube 27 backward.23 pairs of underground water of being come by suction sleeve of collapsible tube can have been discharged buffer function smoothly.The sewage draining exit 24 of spill box is discharged chaos muddy water when motor and pump running, during shutdown the water in the water tank is discharged.The underground water that drain opening 25 will constantly be aspirated is up discharged.
Claims (5)
1. vacuum jet pump, comprise motor (1), be installed in centrifugal pump and liquid jetting device in the spill box (15), it is characterized in that: motor is fixed on the spill box outer wall, motor output shaft is plugged in the center hole of rotating shaft (17) of centrifugal pump, is connected with key (5) by Cock screw (2) between the two.
2. vacuum jet pump according to claim 1 is characterized in that: the output tube of liquid jetting device is a straight tube, and coaxial with the output tube of centrifugal pump.
3. vacuum jet pump according to claim 1 and 2, it is characterized in that: be provided with the flange plate that blocks water (7) between the opening of rotating shaft of centrifugal pump (17) and spill box (15), rotating shaft and block water and be provided with oil sealing (4) between the flange plate is positioned at the flange plate inboard that blocks water and is provided with centrifugal water-ring (16) in the rotating shaft.
4. vacuum jet pump according to claim 3 is characterized in that: the supplying tube of liquid jetting device (14) is provided with vacuum gauge (12) and stop valve (13).
5. vacuum jet pump according to claim 3 is characterized in that: motor is a ventilated machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201576019U CN201129323Y (en) | 2007-11-26 | 2007-11-26 | Vacuum jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201576019U CN201129323Y (en) | 2007-11-26 | 2007-11-26 | Vacuum jet pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129323Y true CN201129323Y (en) | 2008-10-08 |
Family
ID=40017165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201576019U Expired - Fee Related CN201129323Y (en) | 2007-11-26 | 2007-11-26 | Vacuum jet pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129323Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595206A (en) * | 2013-10-31 | 2015-05-06 | 普发真空有限公司 | Vacuum pump |
-
2007
- 2007-11-26 CN CNU2007201576019U patent/CN201129323Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595206A (en) * | 2013-10-31 | 2015-05-06 | 普发真空有限公司 | Vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20111126 |