CN208487023U - A kind of water pump - Google Patents

Abstract

The utility model discloses a kind of water pumps, including pump cover, impeller and the motor for driving wheel rotation, pump cover is provided with the first chamber of accommodating impeller, first chamber is provided with inlet opening, and the water blocking member for reducing or preventing water to be back to from first chamber inlet opening is provided between inlet opening and impeller.A kind of water pump of the utility model stops recirculation water, recirculation water is reduced or prevented to have an impact the water flow of inlet opening, significantly promote the working efficiency of water pump by the way that water blocking member is arranged between inlet opening and impeller；Meanwhile water blocking member can also be oriented to the water flow flowing for flowing into inlet opening, lead water to impeller center, reduce the resistance that water flow generates impeller, further increase the efficiency of water pump.

Description

A kind of water pump

Technical field

The utility model relates to fluid device more particularly to a kind of water pumps.

Background technique

In the prior art, water pump have pump cover, impeller and motor, pump cover be provided with accommodating impeller first chamber, first Chamber is provided with inlet opening and apopore.Water enters first chamber by inlet opening, under the action of motor driven impeller operation, band Dynamic water flow is discharged from apopore, and water drives through impeller during this, and the pressure and flow velocity of water increase.

However, the water flow that impeller rotation generates is sprayed centered on impeller towards impeller periphery non-directional under the influence of centrifugal force Penetrate, and can retain and have the gap between impeller and inlet opening, the water flow of ejection some can flow between impeller and inlet opening At gap, there is backflow phenomenon.This partial reflux water hinders the speed and influx of inlet opening water flow, and water pump is greatly lowered Efficiency.

Utility model content

The utility model aims to solve the problem that above-mentioned mentioned technical problem, provides a kind of water pump, can carry out to recirculation water Stop, recirculation water is reduced or prevented to have an impact the water flow of inlet opening, promotes pump working efficiency.

The utility model is realized through the following technical scheme:

A kind of water pump, including pump cover, impeller and the motor for driving wheel rotation, pump cover is provided with the first chamber of accommodating impeller Room, first chamber are provided with inlet opening, are provided between inlet opening and impeller for reducing or preventing water to flow back from first chamber To the water blocking member of inlet opening.

Preferably, water blocking member includes the first ring, and the first ring is arranged around inlet opening, the first ring and first chamber or impeller Connection.

Preferably, water blocking member includes the first ring for connecting first chamber, the second ring for connecting impeller, and inlet opening is set to Inside first ring, the first ring extends to the inside of the second ring.

Preferably, first chamber is provided with the first side wall of the first bottom wall and wound impeller, and inlet opening is set to the first bottom Wall, apopore are set to the first side wall, and the first bottom wall is gradually increased at a distance from impeller along the rotation direction of impeller.

Preferably, the cross-sectional area of first chamber is gradually increased along the direction close to motor.

Preferably, first chamber is provided with the first side wall of the first bottom wall and wound impeller, and inlet opening is set to the first bottom Wall, apopore are set to the first side wall, and the first side wall is gradually increased at a distance from impeller along the rotation direction of impeller.

Preferably, water blocking protrusion is provided in first chamber, water blocking protrusion is used for current deflecting to apopore.

Preferably, pump cover is provided with the first snorkel, and the first snorkel is provided with towards the first pipe portion extended in inlet opening.

Preferably, pump cover is provided with the outlet pipe of connection apopore and the second snorkel for being connected to outlet pipe.

Beneficial effect is: compared with prior art, a kind of water pump of the utility model is by between inlet opening and impeller Water blocking member is set, recirculation water is stopped, recirculation water is reduced or prevented to have an impact the water flow of inlet opening, promotes water pump Working efficiency；Meanwhile water blocking member can also be oriented to the water flow flowing for flowing into inlet opening, lead water in impeller The heart further increases the efficiency of water pump.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used briefly describes.

Obviously, described attached drawing is a part of the embodiment of the utility model, rather than whole embodiments, this field Technical staff without creative efforts, can also be obtained according to these attached drawings other design schemes and attached Figure.

Fig. 1 is the structural schematic diagram of pump cover in a kind of water pump of the utility model；

Fig. 2 is the cut-away illustration of Fig. 1 pump cover；

Fig. 3 is a kind of cut-away illustration of water pump of the utility model.

Specific embodiment

It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.

Obviously, described embodiment is a part of the embodiment of the utility model, rather than whole embodiments, is based on The embodiments of the present invention, those skilled in the art's other implementations obtained without creative efforts Example, belongs to the protection scope of the utility model.

In addition, all connection relationships being previously mentioned in text, not singly refer to that component directly connects, and referring to can be according to specific reality Situation is applied, by adding or reducing connection auxiliary, to form more preferably connection structure.Each technology in the utility model is special Sign, can be with combination of interactions under the premise of not conflicting conflict.

As shown in Figure 1, Figure 2, Figure 3 shows, a kind of water pump, including the motor that pump cover 1, impeller 9 and driving impeller 9 rotate, pump cover 1 It is provided with the first chamber 3 of accommodating impeller 9.First chamber 3 is provided with inlet opening 5 and apopore 71.

For common centrifugal water pump, first chamber 3 is provided with the first side wall of the first bottom wall 32 and wound impeller 9 31, sealing is connected to motor backwards to the side of the first bottom wall 32 in the first side wall 31.

Correspondingly, inlet opening 5 is set to the first bottom wall 32, apopore 71 is set to the first side wall 31.

When pump working, water enters first chamber 3 by inlet opening 5, and then the axis direction along impeller 9 enters in impeller 9 Then portion flows out from impeller 9 along the radial direction of impeller 9, finally drains on the outside of water pump from apopore 71.

Since impeller 9 and first chamber 3 retain gap, water can't be all from apopore after the radially flowing out of impeller 9 71 outflow, a part of water can the gap between impeller 9 and first chamber 3 flow to inlet opening 5, this part of water be referred to as flow back Water.

Since recirculation water occupies the space around inlet opening 5, first chamber 3 is entered to external water and generates obstruction, this is just The discharge reduction for causing inlet opening 5 to introduce, and then reduce the inflow of water pump, the water yield of water pump is also limited, water is reduced The efficiency of pump.

Moreover, the flow direction of recirculation water is vertical with the water (flow) direction of inlet opening, recirculation water is also to the water flow at inlet opening 5 Direction generates interference, so that the water of inlet opening 5 can not all flow to impeller 9.

A part of water can the gap between impeller 9 and first chamber 3 flow to apopore 71, there is water and do not driven by impeller 9 Dynamic situation causes water speed and the pressure out of water pump that cannot meet the requirements.

For the influence for reducing or preventing recirculation water, water blocking member is provided between inlet opening 5 and impeller 9, water blocking member is used In reducing the water for being back to inlet opening 5 from impeller 9, even, realization prevents water to be back to inlet opening 5 through impeller 9.

Water blocking member can be the forms such as water blocking column, water fender, but be easy there are gap, cannot stop recirculation water completely Flowing.

Water blocking member can be mounted on first chamber 3 or impeller 9 with single part, and water blocking member can also be with periphery Part is integrally formed, and reduces production cost.

As one embodiment of water blocking member, water blocking member includes the first ring 51, and the first ring 51 is set around inlet opening 5 It sets, the first ring 51 is connect with first chamber 3 or impeller 9.

First ring 51 is connect with first chamber 3 or impeller 9, either assembling parts together, be also possible to one at Type.

As second embodiment of water blocking member, water blocking member includes the first ring 51 for connecting first chamber 3, connection leaf Second ring 91 of wheel 9, inlet opening 5 are set to inside the first ring 51, and the first ring 51 extends to the inside of the second ring 91.

First ring 51 extends to the inside of the second ring 91, refers to, in the operational process of water pump, the first ring 51 will be extended to The inside of second ring 91 does not need the inside that the first ring 51 when water pump stops is maintained at the second ring 91, meanwhile, the first ring 51 prolongs The inside for extending to the second ring 91, refers to, the first ring 51 have along the axis direction perpendicular to impeller 9 with the second ring 91 it is overlapping, no It needs to be completely coincident.

As the third embodiment of water blocking member, water blocking member includes the first ring 51 for connecting first chamber 3, connection leaf Second ring 91 of wheel 9, inlet opening 5 are set to inside the first ring 51, and the first ring 51 is set to the second ring 91 backwards to 9 side of impeller.

First ring 51 is set to the second ring 91 backwards to 9 side of impeller, and in other words, the first ring 51 and the second ring 91 are along vertical It is not overlapped in the axis direction of impeller 9.

It is not recommended that the second ring 91 is located in the first ring 51, otherwise the second ring 91 can become water and be flowed by inlet opening 5 towards impeller 9 Obstruction.

Water blocking member includes that the first ring 51 namely the first ring 51 are arranged between inlet opening 5 and impeller 9.First ring 51 subtracts Lack the gap between the first bottom wall 32 and impeller 9, reduces the backflow water yield for flowing to inlet opening 5, and then the first ring 51 can be right The flowing of recirculation water generates barrier, reduces the interference that recirculation water flows water flow at inlet opening 5.

First ring 51 can be oriented to the water flow in inlet opening 5 simultaneously, convenient for guiding water flow to impeller 9.

For impeller 9, impeller 9 generally includes shaft and several blades radially extended along shaft.Shaft and motor item It is connected as existing connection type, needs to select according to cost and sealing.

For reduce cost and promoted impeller 9 efficiency, can make be for the second ring 91 impeller 9 component part, the second ring 91 connect with several blades, and adjacent blades and the second ring 91 cooperatively form water stream channel.

To reduce the influence that recirculation water intakes to inlet opening 5, apopore 71 can be discharged come real in recirculation water by facilitating It is existing.

For convenience of pumping drainage, the first bottom wall 32 can be made gradually to increase at a distance from impeller 9 along the rotation direction of impeller 9 Greatly, the maximum distance position of the first bottom wall 32 and impeller 9 is located at the first bottom wall 32 at apopore 71, equally, the first bottom wall 32 are located at the first bottom wall 32 at apopore 71 with the minimum distance position of impeller 9.

Namely the drainage channel that first chamber 3 and impeller 9 are formed increases along the rotation direction of impeller 9, and water is discharged convenient for water Pump.

To enable the recirculation water for being bonded the flowing of the first bottom wall 32 easily to flow out apopore 71, apopore 71 can be made to set The first side wall 31 is placed in close to 32 side of the first bottom wall.

Since water understands the Radial Flow along impeller 9 after the driving of impeller 9, water can directly impact the first side wall 31, then water Reverse impact impeller 9 hinders the normal operation of impeller 9, reduces effective output of water pump.

To reduce the obstruction that the first side wall 31 flows water flow, the cross-sectional area of first chamber 3 can be made along the axis of impeller 9 The gradual change of line direction.

That is, water (flow) direction and the first side wall 31, there are angle, water flows through the axis after the first side wall 31 is oriented to along impeller 9 Direction flowing, will not reverse impact impeller 9, facilitate water pump that water is discharged.

For manufacture easy to produce, the cross-sectional area of first chamber 3 can be made to increase along the direction close to motor.That is, the One chamber 3 can be formed by casting and forming mode.

It is had the gap due to unavoidably being retained between the first side wall 31 and impeller 9, to avoid water flow in 3 inward turning of first chamber Then have not been able to smoothly be discharged through apopore 71, rotation direction of the first side wall 31 at a distance from impeller 9 along impeller 9 can be made It is gradually increased.

Rotation direction of the first side wall 31 at a distance from impeller 9 along impeller 9 is gradually increased, and equally expands drainage channel, Convenient for water discharge.

Water is discharged from apopore 71 to further facilitate, can make to be provided with water blocking protrusion 33, water blocking in first chamber 3 Protrusion 33 is for by current deflecting to apopore 71, water blocking protrusion 33 to be set to apopore 71 along the side of 9 rotation direction of impeller.

Water blocking protrusion 33 can be set on the first side wall 31 or the first bottom wall 32, and the top surface of water blocking protrusion 33 can be with For cooperatively forming the distance change relationship of the first side wall 31 or the first bottom wall 32 and impeller 9, manufacture difficulty is reduced.

For the oxygen content for increasing water, pump cover 1 can be made to be provided with the first snorkel 4, in turn, the first snorkel 4 is provided with The first pipe portion 6 extended in towards inlet opening 5.

Inlet opening 5 can connect water inlet pipe 2, facilitates and introduces the water in container in water pump, the first snorkel 4 can be set It sets on water inlet pipe 2.

Since diameter is usually smaller than 2 diameter of water inlet pipe at inlet opening 5, water velocity is big, and hydraulic pressure is small, and intake negative-pressure is big, inhales Tolerance increases, moreover, water (flow) direction is identical as air-flow direction, water flow is small to the resistance of air, is conducive to air and enters water In pump, meanwhile, the air that the first snorkel 4 of meeting of impeller 9 introduces is cut, and so that air is become tiny bubble, is made bubble in water Middle long-time retains, and improves the oxygen content of water.

For the oxygen content for further increasing water, pump cover 1 be provided with the outlet pipe 7 of connection apopore 71 be connected to outlet pipe 7 The second snorkel 8.

It is hurt to prevent finger from entering first chamber 3, can make to be provided with protective grid in apopore 71.

Above embodiments are not limited to the technical solution of the embodiment itself, can be incorporated between embodiment new Embodiment.Above embodiments are only to illustrate the technical solution of the utility model and are not intended to limit it, all without departing from this Any modification of utility model spirit and scope or equivalent replacement should all cover the range in technical solutions of the utility model It is interior.

Claims (9)

1. a kind of water pump, the motor including pump cover (1), impeller (9) and driving impeller (9) rotation, pump cover (1) are provided with accommodating leaf Take turns the first chamber (3) of (9), first chamber (3) is provided with inlet opening (5), which is characterized in that inlet opening (5) and impeller (9) it Between be provided with water blocking member for reducing or preventing water to be back to from first chamber (3) inlet opening (5).

2. a kind of water pump according to claim 1, which is characterized in that the water blocking member includes the first ring (51), and first Ring (51) is arranged around inlet opening (5), and the first ring (51) is connect with first chamber (3) or impeller (9).

3. a kind of water pump according to claim 1, which is characterized in that the water blocking member includes connection first chamber (3) The first ring (51), connect second ring (91) of impeller (9), it is internal that inlet opening (5) are set to the first ring (51), the first ring (51) Extend to the inside of the second ring (91).

4. a kind of water pump according to claim 1, which is characterized in that the first chamber (3) is provided with the first bottom wall (32) it is set to the first bottom wall (32) with the first side wall (31) of wound impeller (9), inlet opening (5), apopore (71) is set to The first side wall (31), rotation direction of the first bottom wall (32) at a distance from impeller (9) along impeller (9) are gradually increased.

5. a kind of water pump according to claim 1, which is characterized in that the cross-sectional area of the first chamber (3) is along close The direction of motor is gradually increased.

6. a kind of water pump according to claim 1, which is characterized in that the first chamber (3) is provided with the first bottom wall (32) it is set to the first bottom wall (32) with the first side wall (31) of wound impeller (9), inlet opening (5), apopore (71) is set to The first side wall (31), rotation direction of the first side wall (31) at a distance from impeller (9) along impeller (9) are gradually increased.

7. any a kind of water pump according to claim 1~6, which is characterized in that be provided with gear in the first chamber (3) Water protrusion (33), water blocking protrusion (33) are used for current deflecting to apopore (71).

8. a kind of water pump according to claim 1, which is characterized in that the pump cover (1) is provided with the first snorkel (4), First snorkel (4) is provided with the first pipe portion (6) towards extension in inlet opening (5).

9. a kind of water pump according to claim 1, which is characterized in that the pump cover (1) is provided with connection apopore (71) Outlet pipe (7) and the second snorkel (8) for being connected to outlet pipe (7).