CN202971211U - Single-stage single-suction centrifugal pump - Google Patents
Single-stage single-suction centrifugal pump Download PDFInfo
- Publication number
- CN202971211U CN202971211U CN 201220566490 CN201220566490U CN202971211U CN 202971211 U CN202971211 U CN 202971211U CN 201220566490 CN201220566490 CN 201220566490 CN 201220566490 U CN201220566490 U CN 201220566490U CN 202971211 U CN202971211 U CN 202971211U
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- CN
- China
- Prior art keywords
- pump
- connection seat
- impeller
- pump shaft
- stud bolt
- 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 - Lifetime
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Abstract
The utility model relates to a single-stage single-suction centrifugal pump which comprises a motor, a pump shaft, a connection seat, a stud bolt, a hexagonal nut, a pump body, an impeller, a flat key, a stop washer and an impeller nut, wherein the motor is fixed above the connection seat; one end of the pump shaft is connected with the motor; the hexagonal nut is spirally and fixedly connected with the stud bolt; one end of the stud bolt is connected with the connection seat; the other end of the stud bolt is connected with the pump body; the hexagonal nut is spirally and fixedly connected with the stud bolt, so that the connection seat is fixedly connected with the pump body; the impeller is positioned in the pump body; the stop washer is positioned between the impeller nut and the impeller; the impeller nut is spirally connected with the other end of the pump shaft, so that the other end of the pump shaft is fixedly connected with the impeller; and the flat key is arranged on the pump shaft and connected with the stop washer. The single-stage single-suction centrifugal pump cannot loosen, and is fixed firmly.
Description
Technical field
The utility model relates to a kind of centrifugal pump, is specially a kind of single stage single suction volute pump.
Background technique
Existing single stage single suction volute pump comprises the elements such as motor, pump shaft, connection seat, stud bolt, hexagon nut, the pump housing, impeller, pump shaft is fixed by coupling and a plurality of screw, thereby the loosening pump shaft that causes easily occurs screw occurs to become flexible, fixing not firm, and cause the concentricity of pump shaft and motor shaft inaccurate, thereby affect the service behaviour of single stage single suction volute pump.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of single stage single suction volute pump, and its pump shaft can not become flexible, and is fixed.
the utility model solves above-mentioned technical problem by following technical proposals: a kind of single stage single suction volute pump, described single stage single suction volute pump comprises motor, pump shaft, connection seat, stud bolt, hexagon nut, the pump housing, impeller, motor is fixed on the top of connection seat, the pump housing is arranged under connection seat and by hexagon nut and is fixedly connected with the stud bolt spiral, it is characterized in that, described centrifugal pump also comprises flat key, lock washer, impeller nut, the axial plane of described pump shaft is provided with keyway to hold the part of flat key, the axle head of pump shaft is provided with screw thread, also be provided with groove to hold another part of flat key on the relative attachment face of impeller and pump shaft, impeller nut is screwed on the axle head of pump shaft, flat key is connected on pump shaft and with lock washer.
Preferably, be provided with an O-ring seals between described connection seat and the pump housing.
Preferably, on described stud bolt, cover has a spring washer, and an end face of spring washer is fitted with connection seat, another end face of spring washer and hexagon nut applying.
Preferably, described connection seat is provided with an inclined via-hole and a bleed valve, and inclined via-hole is positioned on connection seat and with pump housing upper shed and is communicated with, and bleed valve is inserted on inclined via-hole.
The beneficial effects of the utility model are: the utility model single stage single suction volute pump can not become flexible, and is fixed, and the motor shaft of pump shaft and motor is concentric all the time, the service behaviour of bonding single stage single suction volute pump.
Description of drawings
Fig. 1 is the structural representation of the utility model single stage single suction volute pump.
Embodiment
Below further illustrate the utility model by specific embodiment.
as shown in Figure 1, the utility model single stage single suction volute pump comprises motor 1, pump shaft 2, connection seat 3, stud bolt 4, hexagon nut 5, the pump housing 8, impeller 9, flat key 10, lock washer 11, impeller nut 12, motor 1 is fixed on the top of connection seat 3, one end of pump shaft 2 is connected with motor 1, the pump housing 8 is arranged on connection seat 3 times and is fixedly connected with stud bolt 4 spirals by hexagon nut 5, the axial plane of pump shaft 2 is provided with keyway to hold the part of flat key, the axle head of pump shaft 2 is provided with screw thread, also be provided with groove to hold another part of flat key on the relative attachment face of impeller 9 and pump shaft 2, impeller nut 12 is screwed on the axle head of pump shaft 2, flat key 10 is connected on pump shaft 2 and with lock washer 10.
The other end of pump shaft 2 and impeller 9 are fixing, lock washer 11 is between impeller nut 12 and impeller 9 specifically, impeller nut 12 is connected with the other end with pump shaft 2 with the other end spiral of pump shaft 2 and is fixedly connected with impeller 9, and flat key 10 is connected on pump shaft 2 and with lock washer 11.Be provided with an O-ring seals 7 between connection seat 3 and the pump housing 8.On stud bolt 4, cover has a spring washer 6, and an end face of spring washer 6 is fitted with the pump housing 8, another end face of spring washer 6 and hexagon nut 5 applyings.Connection seat 3 is provided with an inclined via-hole 13 and a bleed valve 14, and inclined via-hole 13 is positioned on connection seat 3, and bleed valve 14 is inserted on inclined via-hole 13.
The working principle of the utility model single stage single suction volute pump is as follows: High Rotation Speed can occur in electrical power rear motor axle, thereby driving pump shaft rotates, because pump shaft and impeller are fixed, thereby impeller also can rotate and form inertial centrifugal force like this, liquid has obtained energy to improve pressure under the inertial centrifugal force effect, liquid just can be discharged from impeller like this.After liquid in the pump housing was discharged from, the core of impeller formed vacuum area, and one side constantly sucks liquid, and the certain energy of liquid that one side constantly sucks is again discharged liquid, and single stage single suction volute pump is just so continuously worked.If need to reduce pressure, bleed valve can be opened, air just passes through from inclined via-hole like this, thereby has reduced pressure.In the work of the utility model single stage single suction volute pump, bleed valve cuts out, and namely inclined via-hole also is closed.Connection seat is the bridge between motor and the pump housing, be that connection seat is for connecting motor and the pump housing, one end of stud bolt is connected with connection seat, and the other end of stud bolt is connected with the pump housing, and hexagon nut is fixedly connected with the stud bolt spiral connection seat and the pump housing are fixed together.Spring washer is enclosed within on stud bolt, when stud bolt and hexagon nut when spiral is tightened, hexagon nut is exerted pressure to the spring washer that is enclosed within on stud bolt, spring washer is compacted, end face and the pump housing of spring washer are fitted, another end face of spring washer and hexagon nut are fitted, thereby increase the pretightening force between stud bolt and hexagon nut, and when between connection seat and the pump housing, vibrations occuring, spring washer can absorb the vibrations between connection seat and the pump housing, stud bolt and hexagon nut can not become flexible like this, and be fixed.Realize sealing between connection seat and the pump housing at the O-ring seals between connection seat and the pump housing, the pressure in the pump housing can not reduced.Lock washer prevents the rotation of impeller nut, flat key is used for transmitting the torque between pump shaft and impeller, pump shaft and impeller are fixed and can not become flexible like this, pump shaft is concentric with the motor shaft (not shown) of motor all the time, the service behaviour of bonding single stage single suction volute pump, be smooth running, absolutely not vibration.
In sum, the utility model single stage single suction volute pump mainly realizes that by flat key, lock washer, impeller nut pump shaft and impeller fix, and can not become flexible, and is fixed, pump shaft is concentric with the motor shaft of motor all the time, the service behaviour of bonding single stage single suction volute pump.Spring washer can absorb the vibrations between connection seat and the pump housing, and stud bolt and hexagon nut can not become flexible like this.O-ring seals is realized the sealing between connection seat and the pump housing, and inclined via-hole and bleed valve are mainly used in venting.The utility model single stage single suction volute pump can be vertical centrifugal pump or horizontal centrifugal pump.The utility model single stage single suction volute pump can use clear water and physicochemical properties to be similar to other liquid of clear water, is applicable to the circularly-supercharged and coordinative composition of equipments of the cold-warm waters such as industry and urban water supply and sewerage, tall building supercharging water feeding, gardens sprinkling irrigation, fire fighting pressurization, conveying at a distance, HVAC refrigeration cycle, bathroom.
Those skilled in the art can carry out various remodeling and change to the utility model.Therefore, the utility model has covered various remodeling and the change in the scope that falls into appending claims and equivalent thereof.
Claims (4)
1. single stage single suction volute pump, described single stage single suction volute pump comprises motor, pump shaft, connection seat, stud bolt, hexagon nut, the pump housing, impeller, motor is fixed on the top of connection seat, the pump housing is arranged under connection seat and by hexagon nut and is fixedly connected with the stud bolt spiral, it is characterized in that, described centrifugal pump also comprises flat key, lock washer, impeller nut, the axial plane of described pump shaft is provided with keyway to hold the part of flat key, the axle head of pump shaft is provided with screw thread, also be provided with groove to hold another part of flat key on the relative attachment face of impeller and pump shaft, impeller nut is screwed on the axle head of pump shaft, flat key is connected on pump shaft and with lock washer.
2. single stage single suction volute pump as claimed in claim 1, is characterized in that, is provided with an O-ring seals between described connection seat and the pump housing.
3. single stage single suction volute pump as claimed in claim 1, is characterized in that, on described stud bolt, cover has a spring washer, and an end face of spring washer is fitted with connection seat, another end face of spring washer and hexagon nut applying.
4. single stage single suction volute pump as claimed in claim 1, is characterized in that, described connection seat is provided with an inclined via-hole and a bleed valve, and inclined via-hole is positioned on connection seat and with pump housing upper shed and is communicated with, and bleed valve is inserted on inclined via-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566490 CN202971211U (en) | 2012-10-31 | 2012-10-31 | Single-stage single-suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566490 CN202971211U (en) | 2012-10-31 | 2012-10-31 | Single-stage single-suction centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971211U true CN202971211U (en) | 2013-06-05 |
Family
ID=48512295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220566490 Expired - Lifetime CN202971211U (en) | 2012-10-31 | 2012-10-31 | Single-stage single-suction centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159543A (en) * | 2017-12-27 | 2019-08-23 | 浙江中太泵业科技有限公司 | A kind of centrifugal pump of single stage type of easy access |
-
2012
- 2012-10-31 CN CN 201220566490 patent/CN202971211U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159543A (en) * | 2017-12-27 | 2019-08-23 | 浙江中太泵业科技有限公司 | A kind of centrifugal pump of single stage type of easy access |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |