CN206753996U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
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- CN206753996U CN206753996U CN201720240203.7U CN201720240203U CN206753996U CN 206753996 U CN206753996 U CN 206753996U CN 201720240203 U CN201720240203 U CN 201720240203U CN 206753996 U CN206753996 U CN 206753996U
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- wheel chamber
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- chamber
- centrifugal pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 239000012530 fluid Substances 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000740 bleeding effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 14
- 230000006378 damage Effects 0.000 abstract description 13
- 238000001125 extrusion Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010338 mechanical breakdown Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a centrifugal pump includes: the pump comprises a pump shell, wherein an extrusion chamber is formed in the pump shell and positioned between two suction chambers, and the extrusion chamber is used for pumping out fluid; the centrifugal pump further comprises: an annular impeller chamber; the impeller chamber is arranged in the pump shell; two water inlets are formed in the axial direction of the impeller chamber, and an annular water outlet is formed in the circumferential direction of the impeller chamber; wherein, two water inlets of the impeller chamber are respectively communicated with two suction chambers, and an annular water outlet of the impeller chamber is communicated with the extrusion chamber; the two water inlets of the impeller chamber are circular, and the diameter of the two water inlets is larger than that of the pump shaft; the diameter of the water inlet of the impeller chamber is 450-500 mm, so that when the flow rises, the flow rate of the water inlet of the impeller chamber in the centrifugal pump is still gentle, and the problem that in the prior art, under the condition that the flow rate is high, cavitation of fluid is easy to occur in the impeller chamber, and further cavitation damages to the impeller in the impeller chamber are caused is solved.
Description
Technical field
It the utility model is related to pumping technology field, more particularly to a kind of centrifugal pump.
Background technology
At present, centrifugal pump is widely used in the circulatory system of the industries such as petrochemical industry, metallurgy, the operation principle of centrifugal pump
It is to carry out trandfer fluid by centrifugal force caused by impeller rotation.
Existing centrifugal pump, when the fluid flow for needing to pump is larger, then enter the speed of centrifugal pump by increasing fluid
Spend to lift flow.But the flow velocity for so doing the water inlet of the blade wheel chamber easily caused in centrifugal pump is too fast, and then cause to flow
Cavitation phenomenons occurs in blade wheel chamber for body, and cavitation easily causes the damage of blade wheel chamber's inner impeller.
Utility model content
The utility model provides a kind of centrifugal pump, to solve to enter the speed of centrifugal pump by increasing fluid in the prior art
During lifting flow, easily cause the flow velocity of the water inlet of blade wheel chamber in heart pump too fast, cause fluid to occur in blade wheel chamber
Cavitation phenomenons, and the problem of cavitation easily causes the damage of blade wheel chamber's inner impeller.
The utility model provides a kind of centrifugal pump, including：
Pump case, water inlet is offered on the pump case；Both sides inside the pump case are respectively formed with two suction rooms, institute
Two suction rooms are stated to connect with the water inlet；Delivery chamber is also formed with inside the pump case, the delivery chamber is located at described two
The centre of individual suction room, the delivery chamber are used to pump out fluid；
The centrifugal pump also includes：The blade wheel chamber of ring-type；The blade wheel chamber is arranged in the pump case；In the blade wheel chamber
Axial direction offer two water inlets, offer circular outlets in the circumference of the blade wheel chamber；Wherein, the two of the blade wheel chamber
The individual water inlet connects with described two suction rooms respectively, and the circular outlets of the blade wheel chamber connect with the delivery chamber；
The centrifugal pump also includes：Through the pump case and through the ring-type blade wheel chamber center pump shaft, institute
State and impeller is provided with pump shaft；
Wherein, two water inlets of the blade wheel chamber are circle, and diameter is more than the diameter of the pump shaft；The blade wheel chamber
Water inlet a diameter of 450-500 millimeters.
Alternatively, a diameter of 496.25 millimeters of the round entrance of the blade wheel chamber.
Alternatively, the inconsistent connection of inwall of two water inlets of the blade wheel chamber and the pump case.
Alternatively, it is provided with sealing ring between two water inlets of the blade wheel chamber and the inwall of the pump case.
Alternatively, center indent of the inwall of the both sides of two water inlets of the blade wheel chamber to the blade wheel chamber.
Alternatively, the inwall of the delivery chamber is smooth surface.
Alternatively, the inwall of the suction room is smooth surface.
Alternatively, it is provided with air bleeding valve at the top of the delivery chamber.
Alternatively, the material of the impeller is high strength steel.
Alternatively, the material of the sealing ring is rubber.
It was found from the utility model embodiment, centrifugal pump provided by the utility model includes：Pump case, offer on pump case into
The mouth of a river；Both sides inside pump case are respectively formed with two suction rooms, and two suction rooms connect with water inlet；Also formed inside pump case
There is delivery chamber, positioned at the centre of two suction rooms, delivery chamber is used to pump out fluid delivery chamber；Centrifugal pump also includes：The leaf of ring-type
Engineer room；Blade wheel chamber is arranged in pump case；Two water inlets are offered in the axial direction of blade wheel chamber, offer ring in the circumference of blade wheel chamber
Shape delivery port；Wherein, two water inlets of blade wheel chamber connect with two suction rooms respectively, the circular outlets of blade wheel chamber and extrusion
Room connects；Centrifugal pump also includes：Through pump case and run through the pump shaft at the center of the blade wheel chamber of ring-type, leaf is provided with pump shaft
Wheel；Wherein, two water inlets of blade wheel chamber are circle, and diameter is more than the diameter of pump shaft；The water inlet of blade wheel chamber it is a diameter of
450-500 millimeters, the utility model is by the way that two water inlets of blade wheel chamber are provided in round, and two water inlets of blade wheel chamber
Diameter is more than the diameter of pump shaft, and a diameter of 450-500 millimeters of the water inlet of the specific blade wheel chamber, this allows for flow enhancement
When, the flow velocity of the water inlet of the blade wheel chamber in centrifugal pump is still more gentle, and so as to solve in the prior art, flow velocity is faster
In the case of, cavitation phenomenons, the problem of in turn resulting in damage of the cavitation to blade wheel chamber's inner impeller, easily occur in blade wheel chamber for fluid.
Brief description of the drawings
Fig. 1 is a kind of structural representation of centrifugal pump shown in an exemplary embodiment；
Fig. 2 is a kind of partial structural diagram of the blade wheel chamber of centrifugal pump shown in another exemplary embodiment；
Fig. 3 is a kind of structural representation of centrifugal pump shown in another exemplary embodiment.
Reference：
1- pump cases；2- sucks room；3- delivery chambers；4- blade wheel chamber；5- pump shafts；6- impellers；7- sealing rings；8- air bleeding valves；9-
Pump seat.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Centrifugal pump is widely used in the circulatory system of the industries such as petrochemical industry, metallurgy, and the operation principle of centrifugal pump is to lean on
Centrifugal force caused by impeller rotation carrys out trandfer fluid.The fluid that cavitation phenomenons refers to flow is produced due to the reduction of local pressure
The harm that cavitation occurs for the phenomenon of raw steam bubble, wherein centrifugal pump is that can cause the erosion of parts at cavitation position.It is existing various
During centrifugal pump use, when the fluid flow for needing to pump is larger, then enter centrifugal pump typically by increase fluid
Speed is to lift flow.But in this way increase flow easily cause blade wheel chamber in centrifugal pump water inlet flow velocity
It is too fast, cause local pressure of the fluid at impeller too low, cause fluid that cavitation occurs in blade wheel chamber, and cause in blade wheel chamber
The damage of impeller.The utility model provides a kind of centrifugal pump, to solve in the prior art by increasing fluid into centrifugal pump
When speed is to lift flow, easily causes the flow velocity of the water inlet of blade wheel chamber in heart pump too fast, cause fluid in blade wheel chamber
Generation cavitation phenomenons, and the problem of cavitation easily causes the damage of blade wheel chamber's inner impeller.
Fig. 1 is a kind of structural representation of centrifugal pump shown in an exemplary embodiment, and the embodiment includes：
Pump case 1, total water inlet is offered on pump case 1；Both sides inside pump case 1 be respectively formed with two suction rooms 2, two
Suction room 2 connects with total water inlet；Delivery chamber 3 is also formed with inside pump case 1, delivery chamber 3 is located at the centres of two suction rooms 2,
Delivery chamber 3 is used to pump out fluid；The embodiment centrifugal pump also includes：The blade wheel chamber 4 of ring-type；Blade wheel chamber 4 is arranged in pump case 1；
Two water inlets are offered in the axial direction of blade wheel chamber 4, offer circular outlets in the circumference of blade wheel chamber 4；Wherein, blade wheel chamber 4
Two water inlets respectively with two suction rooms 2 connect, the circular outlets of blade wheel chamber 4 connect with delivery chamber 3；The embodiment from
Heart pump also includes：Through pump case 1 and run through the pump shaft 5 at the center of the blade wheel chamber 4 of ring-type, impeller 6 is provided with pump shaft 5；Its
In, two water inlets of blade wheel chamber 4 are circle, and diameter is more than the diameter of the pump shaft 5；The water inlet of the blade wheel chamber 4
A diameter of 450-500 millimeters.
Specifically, pump case 1, total water inlet (not shown) is offered on pump case 1, total water inlet passes through connecting line
It is connected with water source or other fluid sources；Both sides inside pump case 1 are respectively formed with two suction rooms 2, and two suction rooms 2 are with always entering
The mouth of a river connects, and pump case 1 can be divided into two parts up and down, and be attached by bolt, to facilitate generation mechanical breakdown to be dismantled；
Delivery chamber 3 is also formed with inside pump case 1, delivery chamber 3 is located at the centres of two suction rooms 2, and delivery chamber 3 can be circular structure,
Delivery chamber 3 is used to pump out fluid, wherein suction room 2, delivery chamber 3 are made up of change of the inwall of pump case 1 Jing Guo shape, belongs to
A part for pump case 1；
The embodiment centrifugal pump also includes：The blade wheel chamber 4 of ring-type；Blade wheel chamber 4 is arranged in pump case 1；In the axle of blade wheel chamber 4
To offering two water inlets, offer circular outlets in the circumference of blade wheel chamber 4；Wherein, two water inlets of blade wheel chamber 4 point
Do not connected with two suction rooms 2, the circular outlets of blade wheel chamber 4 connect with delivery chamber 3；
The embodiment centrifugal pump also includes：Through pump case 1 and through ring-type blade wheel chamber 4 center pump shaft 5, pump
Impeller 6 is provided with axle 5, one end of the pump shaft 5 of centrifugal pump is connected with transmission device (not shown), such as shaft coupling, pump shaft 5
It can be connected by shaft coupling with motor, motor provides power for the pump shaft 5 of centrifugal pump；
It should be noted that spring bearing (not shown) can be set between pump shaft 5 and shaft coupling, for supporting pump shaft
5。
Wherein, two water inlets of blade wheel chamber 4 are preferably circular, and diameter is more than the diameter of pump shaft 5；Blade wheel chamber 4 enters
A diameter of 450-500 millimeters at the mouth of a river, impeller 6 are located within blade wheel chamber 4, exist between the blade of impeller 6 and blade wheel chamber 4 certain
Interval, for providing passage for the fluid of pumping, the effect of wherein impeller 6 is done work by rotating centrifugal convection body, will be flowed
Body is sent into delivery chamber.
Connected it should be noted that being additionally provided with total delivery port (not shown) on the pump housing 1 with pumping chamber 3, the centrifugation
Pump also includes pump seat 9.
The course of work of the centrifugal pump fluid of the present embodiment is：Motor connecting power, motor drive centrifugal pump
Pump shaft rotate, pump shaft impeller rotates in blade wheel chamber, local depression formed in blade wheel chamber by the rotation of impeller, is led
Two suction rooms for causing pumping fluid to enter by total water inlet on pump case in the pump housing, then two by being connected in blade wheel chamber
Water inlet enters blade wheel chamber, then pumps fluid and enters delivery chamber by the centrifugal action of impeller, and causes simultaneously in delivery chamber
The increase of pumping Fluid pressure, the pumping fluid in delivery chamber is discharged by total delivery port on the pump housing.
It was found from above-described embodiment, centrifugal pump provided by the utility model includes：Pump case, water inlet is offered on pump case；
Both sides inside pump case are respectively formed with two suction rooms, and two suction rooms connect with water inlet；It is also formed with pressing inside pump case
Go out room, positioned at the centre of two suction rooms, delivery chamber is used to pump out fluid delivery chamber；Centrifugal pump also includes：The blade wheel chamber of ring-type；
Blade wheel chamber is arranged in pump case；Two water inlets are offered in the axial direction of blade wheel chamber, annular is offered in the circumference of blade wheel chamber and goes out
The mouth of a river；Wherein, two water inlets of blade wheel chamber connect with two suction rooms respectively, and circular outlets and the delivery chamber of blade wheel chamber connect
It is logical；Centrifugal pump also includes：Through pump case and run through the pump shaft at the center of the blade wheel chamber of ring-type, impeller is provided with pump shaft；Its
In, two water inlets of blade wheel chamber are circle, and diameter is more than the diameter of pump shaft；A diameter of 450- of the water inlet of blade wheel chamber
500 millimeters, the utility model is by the way that two water inlets of blade wheel chamber are provided in round, and two water inlet diameters of blade wheel chamber
More than the diameter of pump shaft, a diameter of 450-500 millimeters of the water inlet of the specific blade wheel chamber this when allowing for flow enhancement, from
The flow velocity of the water inlet of blade wheel chamber in heart pump is still more gentle, so as to solve in the prior art, the faster situation of flow velocity
Under, cavitation phenomenons, the problem of in turn resulting in damage of the cavitation to blade wheel chamber's inner impeller, easily occur in blade wheel chamber for fluid.
Fig. 2 is a kind of partial structural diagram of the blade wheel chamber of centrifugal pump shown in another exemplary embodiment, above-mentioned
On the basis of embodiment (embodiment illustrated in fig. 1), the present embodiment includes：
With reference to figure 1, pump case 1, total water inlet is offered on pump case 1；Both sides inside pump case 1 are respectively formed with two suctions
Room 2, two suction rooms 2 connect with total water inlet；Delivery chamber 3 is also formed with inside pump case 1, delivery chamber 3 is positioned at two suction rooms 2
Centre, delivery chamber 3 be used for pump out fluid；The embodiment centrifugal pump also includes：The blade wheel chamber 4 of ring-type；Blade wheel chamber 4 is arranged on pump
In shell 1；Two water inlets are offered in the axial direction of blade wheel chamber 4, offer circular outlets in the circumference of blade wheel chamber 4；Wherein, leaf
Two water inlets of engineer room 4 connect with two suction rooms 2 respectively, and the circular outlets of blade wheel chamber 4 connect with delivery chamber 3；The reality
Applying a centrifugal pump also includes：Through pump case 1 and run through the pump shaft 5 at the center of the blade wheel chamber 4 of ring-type, leaf is provided with pump shaft 5
Wheel 6；
With reference to figure 2, for the partial structural diagram of the blade wheel chamber 4 of the present embodiment, wherein the two of blade wheel chamber 4 water inlet is
Circle, and diameter is more than the diameter of pump shaft 5；Wherein a diameter of 496.25 millimeters of the round entrance of blade wheel chamber 4.By by impeller
The diameter of the round entrance of the blade wheel chamber of room 4 is arranged to 496.25 millimeters, may be implemented in need lifted flow when, will not cause from
The flow velocity of the water inlet of blade wheel chamber 4 in heart pump is too fast.
In a specific application implementation, it is assumed that the fluid of required pumping is water, and the flow of required pumping is 4000
Cube m/h, when the diameter of two water inlets of blade wheel chamber is arranged to 473 millimeters, the current of two water inlets of blade wheel chamber
Speed is 6.32 meter per seconds；496.25 millimeters are arranged to using the diameter of two water inlets of the blade wheel chamber 4 of the present embodiment, blade wheel chamber
The water flow velocities of two water inlets be 5.75 meter per seconds.
It was found from above-described embodiment, centrifugal pump provided by the utility model includes：Pump case, water inlet is offered on pump case；
Both sides inside pump case are respectively formed with two suction rooms, and two suction rooms connect with water inlet；It is also formed with pressing inside pump case
Go out room, positioned at the centre of two suction rooms, delivery chamber is used to pump out fluid delivery chamber；Centrifugal pump also includes：The blade wheel chamber of ring-type；
Blade wheel chamber is arranged in pump case；Two water inlets are offered in the axial direction of blade wheel chamber, annular is offered in the circumference of blade wheel chamber and goes out
The mouth of a river；Wherein, two water inlets of blade wheel chamber connect with two suction rooms respectively, and circular outlets and the delivery chamber of blade wheel chamber connect
It is logical；Centrifugal pump also includes：Through pump case and run through the pump shaft at the center of the blade wheel chamber of ring-type, impeller is provided with pump shaft；Its
In, two water inlets of blade wheel chamber are circle, and diameter is more than the diameter of pump shaft；A diameter of the 496.25 of the water inlet of blade wheel chamber
Millimeter, the utility model is by the way that two water inlets of blade wheel chamber are provided in round, and two water inlet diameters of blade wheel chamber are big
In the diameter of pump shaft, a diameter of 496.25 millimeters of the water inlet of the specific blade wheel chamber, when needing to be lifted flow, will not go out
The problem of flow velocity of the water inlet of blade wheel chamber in existing centrifugal pump is too fast, is entered by increasing fluid in the prior art so as to solve
When entering the speed of centrifugal pump to lift flow, easily cause the flow velocity of the water inlet of blade wheel chamber in centrifugal pump too fast, cause to flow
The problem of cavitation phenomenons occurs in blade wheel chamber for body, and cavitation easily causes the damage of blade wheel chamber's inner impeller.
Fig. 3 is a kind of structural representation of centrifugal pump shown in another exemplary embodiment, on the basis of above-described embodiment
On, this implementation also includes：
Pump case 1, total water inlet is offered on pump case 1, total water inlet passes through connecting line and water source or other fluid sources
Connection；Both sides inside pump case 1 are respectively formed with two suction rooms 2, and two suction rooms 2 connect with total water inlet, and pump case 1 can divide
For upper and lower two parts, and it is attached by bolt, mechanical breakdown occurs is dismantled to facilitate；It is also formed with inside pump case 1
Delivery chamber 3, for delivery chamber 3 positioned at the centre of two suction rooms 2, delivery chamber 3 can be circular structure, and delivery chamber 3 is used to pump out stream
Body, wherein suction room 2, delivery chamber 3 are made up of change of the inwall of pump case 1 Jing Guo shape, belong to a part for pump case 1；Should
Embodiment centrifugal pump also includes：The blade wheel chamber 4 of ring-type；Blade wheel chamber 4 is arranged in pump case 1；Two are offered in the axial direction of blade wheel chamber 4
Individual water inlet, in the circumference of blade wheel chamber 4 offer circular outlets；Wherein, two water inlets of blade wheel chamber 4 are inhaled with two respectively
Enter the room 2 connections, the circular outlets of blade wheel chamber 4 connect with delivery chamber 3；The embodiment centrifugal pump also includes：Through pump case 1,
And run through the pump shaft 5 at the center of the blade wheel chamber 4 of ring-type, impeller 6 is provided with pump shaft 5, one end of the pump shaft 5 of centrifugal pump is connected with
Transmission device, such as shaft coupling, pump shaft 5 can be connected by shaft coupling with motor, and motor provides dynamic for the pump shaft 5 of centrifugal pump
Power；Wherein, two water inlets of blade wheel chamber 4 are circle, and diameter is more than the diameter of pump shaft 5；The diameter of the water inlet of blade wheel chamber 4
For 450-500 millimeters, impeller 6 is located within blade wheel chamber 4, certain interval between the blade of impeller 6 and blade wheel chamber 4 be present, uses
Passage is provided in the fluid for pumping, the effect of wherein impeller 6 is done work by rotating centrifugal convection body, and fluid is sent into and extruded
Room 3.
Wherein, the top of delivery chamber 3 is provided with air bleeding valve 8, when delivery chamber 3 produces gas due to cavitation, passes through extrusion
The top of room 3 is provided with air bleeding valve 8 and discharges unnecessary gas, reduces damage of the cavitation to impeller and centrifugal pump miscellaneous part.
It was found from the utility model embodiment, centrifugal pump provided by the utility model includes：Pump case, offer on pump case into
The mouth of a river；Both sides inside pump case are respectively formed with two suction rooms, and two suction rooms connect with water inlet；Also formed inside pump case
There is delivery chamber, positioned at the centre of two suction rooms, delivery chamber is used to pump out fluid delivery chamber；Centrifugal pump also includes：The leaf of ring-type
Engineer room；Blade wheel chamber is arranged in pump case；Two water inlets are offered in the axial direction of blade wheel chamber, offer ring in the circumference of blade wheel chamber
Shape delivery port；Wherein, two water inlets of blade wheel chamber connect with two suction rooms respectively, the circular outlets of blade wheel chamber and extrusion
Room connects；Centrifugal pump also includes：Through pump case and run through the pump shaft at the center of the blade wheel chamber of ring-type, leaf is provided with pump shaft
Wheel；Wherein, two water inlets of blade wheel chamber are circle, and diameter is more than the diameter of pump shaft；The water inlet of blade wheel chamber it is a diameter of
450-500 millimeters, the utility model is by the way that two water inlets of blade wheel chamber are provided in round, and two water inlets of blade wheel chamber
Diameter is more than the diameter of pump shaft, and a diameter of 450-500 millimeters of the water inlet of the specific blade wheel chamber, may be implemented in needs to be lifted
During flow, the flow velocity of the water inlet of blade wheel chamber in centrifugal pump will not be caused too fast, so as to solve in the prior art, pass through increasing
When big fluid enters the speed of centrifugal pump to lift flow, easily cause the flow velocity of the water inlet of blade wheel chamber in heart pump too fast,
Cause fluid that cavitation phenomenons occurs in blade wheel chamber, and the problem of cavitation easily causes the damage of blade wheel chamber's inner impeller, pass through simultaneously
Air bleeding valve is provided with the top of delivery chamber, can be achieved, when delivery chamber produces gas due to cavitation, to pass through the top of delivery chamber
It is provided with air bleeding valve and discharges unnecessary gas, reduces damage of the cavitation to impeller and centrifugal pump miscellaneous part.
On the basis of above-described embodiment, with reference to figure 3, alternatively, two water inlets and the pump case 1 of blade wheel chamber 4
The inconsistent connection of inwall, sealing ring 7 is provided between two water inlets of the blade wheel chamber 4 and the inwall of the pump case 1.Pass through leaf
Two water inlets of engineer room and the inconsistent connection of inwall of the pump case, and two water inlets in blade wheel chamber and the pump case
Inwall between be provided with sealing ring, isolation suction room and the delivery chamber can be played a part of, to prevent suction indoor
Pumping fluid is directly entered delivery chamber without the import of blade wheel chamber.
Alternatively, center indent from the inwall of the both sides of two water inlets of the blade wheel chamber 4 to the blade wheel chamber 4, with
Make the pumping fluid stable in blade wheel chamber, avoid that cavitation occurs.
Alternatively, the inwall of the delivery chamber 3 is smooth surface, so that the pumping fluid stable in delivery chamber, avoids sending out
Raw cavitation.
Alternatively, the inwall of the suction room 2 is smooth surface, so that into the pumping fluid stable in blade wheel chamber, is kept away
Exempt from that cavitation occurs.
Alternatively, the material of the impeller 6 is high strength steel.
Alternatively, the material of the sealing ring 7 is rubber.
It was found from the utility model embodiment, centrifugal pump provided by the utility model includes：Pump case, offer on pump case into
The mouth of a river；Both sides inside pump case are respectively formed with two suction rooms, and two suction rooms connect with water inlet；Also formed inside pump case
There is delivery chamber, positioned at the centre of two suction rooms, delivery chamber is used to pump out fluid delivery chamber；Centrifugal pump also includes：The leaf of ring-type
Engineer room；Blade wheel chamber is arranged in pump case；Two water inlets are offered in the axial direction of blade wheel chamber, offer ring in the circumference of blade wheel chamber
Shape delivery port；Wherein, two water inlets of blade wheel chamber connect with two suction rooms respectively, the circular outlets of blade wheel chamber and extrusion
Room connects；Centrifugal pump also includes：Through pump case and run through the pump shaft at the center of the blade wheel chamber of ring-type, leaf is provided with pump shaft
Wheel；Wherein, two water inlets of blade wheel chamber are circle, and diameter is more than the diameter of pump shaft；The water inlet of blade wheel chamber it is a diameter of
450-500 millimeters, the utility model is by the way that two water inlets of blade wheel chamber are provided in round, and two water inlets of blade wheel chamber
Diameter is more than the diameter of pump shaft, and a diameter of 450-500 millimeters of the water inlet of the specific blade wheel chamber, this allows for flow enhancement
When, the flow velocity of the water inlet of the blade wheel chamber in centrifugal pump is still more gentle, and so as to solve in the prior art, flow velocity is faster
In the case of, cavitation phenomenons, the problem of in turn resulting in damage of the cavitation to blade wheel chamber's inner impeller, easily occur in blade wheel chamber for fluid.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (10)
- A kind of 1. centrifugal pump, it is characterised in that including：Pump case, water inlet is offered on the pump case；Both sides inside the pump case be respectively formed with two suction rooms, described two Individual suction room connects with the water inlet；Delivery chamber is also formed with inside the pump case, the delivery chamber is located at described two suctions The centre entered the room, the delivery chamber are used to pump out fluid；The centrifugal pump also includes：The blade wheel chamber of ring-type；The blade wheel chamber is arranged in the pump case；In the axle of the blade wheel chamber To offering two water inlets, offer circular outlets in the circumference of the blade wheel chamber；Wherein, two institutes of the blade wheel chamber State water inlet to connect with described two suction rooms respectively, the circular outlets of the blade wheel chamber connect with the delivery chamber；The centrifugal pump also includes：Through the pump case and through the ring-type blade wheel chamber center pump shaft, the pump Impeller is provided with axle；Wherein, two water inlets of the blade wheel chamber are circle, and diameter is more than the diameter of the pump shaft；The blade wheel chamber enters A diameter of 450-500 millimeters at the mouth of a river.
- 2. centrifugal pump according to claim 1, it is characterised in that a diameter of the 496.25 of the round entrance of the blade wheel chamber Millimeter.
- 3. centrifugal pump according to claim 1, it is characterised in that two water inlets of the blade wheel chamber and the pump case The inconsistent connection of inwall.
- 4. centrifugal pump according to claim 3, it is characterised in that two water inlets of the blade wheel chamber and the pump case Sealing ring is provided between inwall.
- 5. centrifugal pump according to claim 1, it is characterised in that the inwall of the both sides of two water inlets of the blade wheel chamber To the center indent of the blade wheel chamber.
- 6. centrifugal pump according to claim 1, it is characterised in that the inwall of the delivery chamber is smooth surface.
- 7. centrifugal pump according to claim 1, it is characterised in that the inwall of the suction room is smooth surface.
- 8. centrifugal pump according to claim 1, it is characterised in that be provided with air bleeding valve at the top of the delivery chamber.
- 9. according to the centrifugal pump described in claim any one of 1-8, it is characterised in that the material of the impeller is high strength steel.
- 10. centrifugal pump according to claim 4, it is characterised in that the material of the sealing ring is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720240203.7U CN206753996U (en) | 2017-03-13 | 2017-03-13 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720240203.7U CN206753996U (en) | 2017-03-13 | 2017-03-13 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206753996U true CN206753996U (en) | 2017-12-15 |
Family
ID=60609738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720240203.7U Active CN206753996U (en) | 2017-03-13 | 2017-03-13 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206753996U (en) |
-
2017
- 2017-03-13 CN CN201720240203.7U patent/CN206753996U/en active Active
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