CN201757087U - Draining pump cover - Google Patents

Abstract

The utility model relates to the centrifugal draining pump field, especially to a 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 to a water intake pipe with convex ribs on the inner wall thereof. With the convex ribs on the water intake pipe, the efficiency of reducing continuous backflow and discharging noises has been improved, and losses of flow have been avoided. By using the pump cover, high lift and less flow losses are ensured, water intake pipe blockage in operation due to foreign bodies like knitting wool and cloth scrapes being twisted and tangled by water flow can be avoided.

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 comprise interconnected cylindrical sidewalls and water intake end face, and the water intake end face is provided with water intake, and water intake is connected with intake pipe, and the inwall of described intake pipe is provided with convex tendon.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 at intake pipe convex tendon being set, and 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 the structural representation of the utility model combined type pump cover;

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

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 2 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, the intake pipe 3 of pump cover 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 tiltedly convex tendon 4 of slyness is set, make water get to formation spray covering water intake 1 on the muscle on the one hand, the gas of prevention water intake 1 flows into, and eliminates the noise that certain frequency " bangs-bang-bang ".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.

Pump cover of the present utility model both can be an integrated type, as Fig. 1～shown in Figure 2, also can be combined type, as shown in Figure 3 and Figure 4.

Embodiment 2 is knockdown pump cover as shown in Figure 3 and Figure 4, and intake pipe part 7 wherein is provided with slick and sly tiltedly convex tendon 4, and forms a complete integral body with pump cover part 8.

Claims (3)

1. drainage pump cover, pump cover comprises interconnected cylindrical sidewalls and water intake end face, and the water intake end face is provided with water intake, and water intake is connected with intake pipe, it is characterized in that, and the inwall of described intake pipe is provided with convex tendon.

2. according to the described drainage pump cover of claim 1, it is characterized in that the integral body of described convex tendon is arranged on the inwall of intake pipe.

3. according to claim 1 or 2 described drainage pump covers, it is characterized in that described pump cover is integrated type or combined type.

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