CN201757088U

CN201757088U - Draining pump cover

Info

Publication number: CN201757088U
Application number: CN2010201695005U
Authority: CN
Inventors: 黄访新; 池文茂
Original assignee: Jiangmen Hanyu Electrical Co ltd
Current assignee: Jiangmen Idear Hanyu Electrical JSCL
Priority date: 2010-04-16
Filing date: 2010-04-16
Publication date: 2011-03-09
Anticipated expiration: 2020-04-16

Abstract

The utility model relates to the centrifugal draining pump field, especially to a draining pump cover comprising a cylindrical sidewall and a water inlet end face which are mutually connected. The water inlet end face is provided with a water inlet connected with a water intake pipe. A discharge outlet is provided on the sidewall and communicated with a discharge outlet. A groove arranged on the water inlet end face has a gradually increasing depth from the side wall to the water inlet side. The groove is inclined to the water inlet and air can be discharged from the water inlet through the groove, so that noises resulting from continuous backflow and discharging with certain frequency due to continuous circulation of upward discharging and backflow can be eliminated. Since the water inlet end face is modified into a flat one, the loss of flow can be reduced, and high lift and less flow losses can be ensured.

Description

A kind of drainage pump cover

Technical field

The utility model relates to centrifugal draining pump field, particularly a kind of drainage pump cover.

Background technique

Existing centrifugal drain pump, in use, when the water intake suction air of pump, can cause the liquid in the discharge tube to produce continuous backflow and discharge phenomenon again because of air enters the back, air accumulation can't be discharged in the pump housing, causes producing the continuous backflow of " banging-bang-bang " and discharging noise.In order to reduce this abnormal sound, prior art, as the patent No. be: 200610097517.2 patent, by the end face of pump cover inwall is changed into conical end face by the plane, while is offered the groove of even laying in the conical end face of pump cover inwall, and minimizing produces the noise that certain frequency " bangs-bang-bang " because of row waterborne, backflow constantly circulate.But this structure of prior art can cause flow loss excessive, reduces continuous backflow and the inefficiency of discharging noise simultaneously.

The model utility content

The utility model provides a kind of drainage pump cover, causes the excessive technical problem of flow loss to solve prior art when reducing continuous backflow and getting rid of noise.

The technical solution adopted in the utility model is as follows:

A kind of drainage pump cover, pump cover comprises interconnected cylindrical sidewalls and water intake end face, the water intake end face is provided with water intake, water intake is connected with intake pipe, sidewall is provided with drain opening, water intake communicates with drain opening, has groove on the water intake end face, and the degree of depth of described groove is deepened to the water intake direction gradually from sidewall.The groove of oblique water intake, gas can be got rid of from water intake by groove, can not cause because of row waterborne, backflow constantly circulate and produce the noise that certain frequency " bangs-bang-bang ".Because the water intake end face changes the plane into, the flow of therefore reducing the loss, it is few to have high-lift flow loss simultaneously, the advantage that the draining lift is high.

As a kind of preferred version, described water intake end face is the plane.

As a kind of preferred version, the horizontal sectional drawing of described groove is rectangle or wedge shape or tenon shape or trapezoidal or triangle.

As a kind of preferred version, described groove is arranged on the water intake end face, near the sidewall relative with drain opening.The sidewall dimidiation, half is provided with drain opening, and the sidewall of half is relative with drain opening in addition, and groove is near the sidewall relative with drain opening, away from drain opening.Pump cover can more easily be drained by drain opening near the air of drain opening, therefore be provided with in position that groove can cause the loss of flow and not obvious to the effect that reduces noise near drain opening, therefore, only need groove to be set in position away from drain opening, just can reduce flow loss, thereby raise the efficiency.

As a kind of preferred version, the inwall of intake pipe is provided with convex tendon.Convex tendon is arranged near the water inlet.By convex tendon being set, make water get to and form spray covering water intake on the convex tendon that the gas inflow of prevention water intake improves the continuous backflow and the efficient of discharging noise of eliminating " banging-bang-bang " at the intake pipe inwall.

As further preferred version, the integral body of described convex tendon is arranged on the inwall of intake pipe.

Above-mentioned convex tendon be shaped as slick and sly tiltedly convex tendon, to such an extent as to and can too high protrusion intake pipe end face.Be positioned at the slick and sly tiltedly convex tendon that the intake pipe inwall does not protrude the intake pipe end face, can avoid or reduce tangling, avoid causing water intake to stop up from foreign matters such as the next paniculata of intake pipe, knitting wools.

As a kind of preferred version, described pump cover is integrated type or combined type.

The utility model has improved on the one hand and has eliminated continuous backflow and the efficient of discharging noise by the improvement to the water intake groove, has avoided the loss of flow simultaneously.Use this pump cover, have the little characteristics of high-lift flow loss, and foreign matters such as knitting wool, paniculata twine with current and cause the water intake phenomenon of blocking can reduce work the time.

Description of drawings

Fig. 1 is a kind of mode of the utility model integrated type pump cover;

Fig. 2 is the A-A face sectional view of Fig. 1;

Fig. 3 is a kind of mode of execution of the utility model integrated type pump cover;

Fig. 4 is the B-B face sectional view of Fig. 3;

Fig. 5 is a kind of mode of execution of the present utility model;

Fig. 6 is the C-C face sectional view of Fig. 5;

Fig. 7 is the D-D face sectional view of Fig. 5;

Fig. 8 is a kind of mode of execution of the present utility model;

Fig. 9 is the E-E face sectional view of Fig. 8;

Figure 10 is the F-F face sectional view of Fig. 8;

Figure 11 is the structural representation of the utility model combined type pump cover;

Figure 12 is the G-G face sectional view of Figure 11.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in more detail.

Embodiment 1 as depicted in figs. 1 and 2, a kind of drainage pump cover, pump cover comprises interconnected cylindrical sidewalls 6 and water intake end face 5, water intake end face 5 is provided with water intake 1, water intake 1 is connected with intake pipe 3, and sidewall 6 is provided with drain opening 9, has oblique groove 2 on water intake end face 5, described water intake end face 5 is the plane, and the degree of depth of oblique groove 2 is deepened to water intake 1 direction gradually from sidewall 6.Is to oblique notch on end face owing to still having kept water intake end face 5 for the plane, has therefore reduced the drain discharge loss.By oblique groove 2 is set, gas can pass through oblique groove 2 from water intake 1 eliminating, and minimizing causes because of row waterborne, backflow constantly circulate and produces the noise that certain frequency " bangs-bang-bang ".

The intake pipe 3 of pump cover also is provided with slick and sly tiltedly convex tendon 4, and the slick and sly tiltedly integral body of convex tendon 4 is arranged on the inwall of intake pipe 3.By slick and sly tiltedly convex tendon 4 is set, make the water that comes out from oblique groove 2 get to muscle on the one hand and form spray and cover water intake 1, stop the gas of water intake 1 to flow into, eliminate the noise of certain frequency " Hong-Hong-Hong ".In addition, adopt slick and sly tiltedly convex tendon 4 can reduce water intake better and stop up,, cause water intake to stop up, and slick and sly tiltedly convex tendon can be eliminated this phenomenon if adopt the convex tendon of boss shape can tangle from the foreign matters such as paniculata of intake pipe 3.The horizontal sectional drawing of oblique groove 2 is a rectangle in the present embodiment.

Embodiment 2 as shown in Figure 3 and Figure 4, the horizontal sectional drawing of oblique groove 2 is a wedge shape.

Embodiment 3 is as Fig. 5～shown in Figure 7, and oblique groove 2 is arranged on water intake end face 5, and near the sidewall 6 relative with drain opening 9, thereby away from drain opening, the horizontal sectional drawing of oblique groove 2 is a triangle.Air in the pump cover can be drained by drain opening 9, therefore in position the loss that oblique groove can cause flow is set near drain opening 9, then can reduce flow loss in position setting, can reach again and eliminate continuous backflow and the effect of discharging noise away from drain opening 9.In embodiment 3, two oblique grooves 2 have been adopted.

Embodiment 4 has adopted an oblique groove 2 as Fig. 8～shown in Figure 10.

Pump cover of the present utility model both can be an integrated type, as Fig. 1～shown in Figure 10, also can be combined type, as Figure 11 and shown in Figure 12.

As Figure 11 and shown in Figure 12, be knockdown pump cover, intake pipe part 7 wherein is provided with oblique groove 2 and slick and sly tiltedly convex tendon 4, and forms a complete integral body with pump cover part 8.

Claims

1. drainage pump cover, pump cover comprises interconnected cylindrical sidewalls and water intake end face, the water intake end face is provided with water intake, water intake is connected with intake pipe, sidewall is provided with drain opening, have groove on the water intake end face, it is characterized in that, the degree of depth of described groove is deepened to the water intake direction gradually from sidewall.

2. according to the described drainage pump cover of claim 1, it is characterized in that described water intake end face is the plane.

3. according to claim 1 or 2 described drainage pump covers, it is characterized in that the horizontal sectional drawing of described groove is rectangle or wedge shape or tenon shape or trapezoidal or triangle.

4. according to the described drainage pump cover of claim 1, it is characterized in that described groove is arranged on water intake end face and the close sidewall relative with drain opening.

5. according to the described drainage pump cover of claim 3, it is characterized in that described groove is arranged on water intake end face and the close sidewall relative with drain opening.

6. according to the described drainage pump cover of claim 1, it is characterized in that the inwall of described intake pipe is provided with convex tendon.

7. according to the described drainage pump cover of claim 6, it is characterized in that the integral body of described convex tendon is arranged on the inwall of intake pipe.

8. according to the described drainage pump cover of claim 3, it is characterized in that described pump cover is integrated type or combined type.

9. according to each described drainage pump cover of claim 4～7, it is characterized in that described pump cover is integrated type or combined type.