CN101852218B

CN101852218B - Drainage pump cover

Info

Publication number: CN101852218B
Application number: CN201010154544.5A
Authority: CN
Inventors: 黄访新; 池文茂
Original assignee: Jangmen Idear Hanyu Electrical Joint Stock Co ltd
Current assignee: Hanyu Group JSCL
Priority date: 2010-04-16
Filing date: 2010-04-16
Publication date: 2014-07-23
Anticipated expiration: 2030-04-16
Also published as: CN101852218A

Abstract

The invention relates to the field of centrifugal drainage pumps, in particular to a drainage pump cover. The pump cover comprises a cylindrical side wall and a water inlet end face which are mutually connected; a water inlet is formed on the water inlet end face, and is connected with a water inlet pipe; a water outlet is formed on the side wall, and is communicated with the water outlet; a groove is formed on the water inlet end face; and the groove is gradually deepened from the side wall to the water inlet direction. The groove is inclined to the water inlet; the gas can be exhausted from the water inlet through the groove; and continuous backflow in a certain frequency and noise emission due to upper drainage of water and continuous cycle of the backflow are avoided. The water inlet end face is modified into a plane. Therefore, the loss of flow is reduced and the drainage pump cover has the advantages of high lift and low loss of flow.

Description

A kind of drainage pump cover

Technical field

The present invention relates to centrifugal water discharge pump field, particularly a kind of drainage pump cover.

Background technique

Existing centrifugal drain pump, in use, when the water intake air amount of pump, can cause liquid in discharge tube because air enters rear generation continuous backflow with discharge again phenomenon, air accumulation cannot be discharged in the pump housing, causes producing the continuous backflow of " bang-bang-bang " and discharges noise.In order to reduce this abnormal sound, prior art, as the patent No. is: 200610097517.2 patent, by the end face of pump cover inwall is changed into conical end face by 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-bangs-bang " because row waterborne, backflow constantly circulate.But this structure of prior art, can cause flow loss excessive, reduce continuous backflow and the inefficiency of discharging noise simultaneously.

Summary of the invention

The invention provides a kind of drainage pump cover, in the time reducing continuous backflow and get rid of noise, cause the excessive technical problem of flow loss to solve prior art.

The technical solution used in the present invention is as follows:

A kind of drainage pump cover, pump cover comprises interconnected cylindrical sidewalls and water intake end face, 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, on water intake end face, has groove, and the degree of depth of described groove is deepened to 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 row waterborne, backflow constantly circulate and produce the noise that certain frequency " bangs-bangs-bang ".Because water intake end face changes plane into, the flow of therefore reducing the loss has high-lift flow loss few simultaneously, the advantage that draining lift is high.

As a kind of preferred version, described water intake end face is 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 water intake end face, near the sidewall relative with drain opening.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 be drained by drain opening relatively easily near the air of drain opening, therefore not obvious to reducing the effect of noise arranging near the position of drain opening that groove can cause the loss of flow, therefore, only need groove be set in the 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 water inlet.By convex tendon being set at intake pipe inwall, water is got on convex tendon and formed spray covering water intake, the gas inflow of prevention water intake, improves the continuous backflow and the efficiency of discharging noise of eliminating " bang-bang-bang ".

As further preferred version, the whole installation of described convex tendon is at the inwall of intake pipe.

Above-mentioned convex tendon be shaped as round and smooth oblique convex tendon, and can be too not high to such an extent as to protrude intake pipe end face.Be positioned at the round and smooth oblique convex tendon that intake pipe inwall does not protrude intake pipe end face, can avoid or reduce tangling the foreign matter such as paniculata, knitting wool coming from intake pipe, avoid causing water intake to stop up.

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

The present invention, by the improvement to water intake groove, has improved on the one hand and has eliminated continuous backflow and the efficiency of discharging noise, has avoided the loss of flow simultaneously.Use this pump cover, have the advantages that high-lift flow loss is little, and the foreign matter such as knitting wool, paniculata is wound around the phenomenon that causes water intake to stop up with current can reduce work time.

Brief description of the drawings

Fig. 1 is a kind of mode of integrated type pump cover of the present invention;

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

Fig. 3 is a kind of mode of execution of integrated type pump cover of the present invention;

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

Fig. 5 is one embodiment of the present invention;

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 one embodiment of the present invention;

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 combined type pump cover of the present invention;

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

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, the present invention 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 plane, and the degree of depth of oblique groove 2 is deepened to water intake 1 direction gradually from sidewall 6.Owing to still having retained water intake end face 5 for plane is to oblique notch on end face, therefore reduce drain discharge loss.By oblique groove 2 is set, gas can be got rid of from water intake 1 by oblique groove 2, and minimizing causes because row waterborne, backflow constantly circulate and produces the noise that certain frequency " bangs-bangs-bang ".

The intake pipe 3 of pump cover is also provided with round and smooth oblique convex tendon 4, and the whole installation of round and smooth oblique convex tendon 4 is at the inwall of intake pipe 3.By round and smooth oblique convex tendon 4 is set, one side makes to get to muscle from oblique groove 2 water out and forms spray covering water intake 1, and the gas of prevention water intake 1 flows into, and eliminates the noise that certain frequency " bangs-bangs-bang ".In addition, adopt round and smooth oblique convex tendon 4 can reduce better water intake and stop up, if adopt the convex tendon of boss-shaped can tangle from foreign matters such as the paniculatas of intake pipe 3, cause water intake to stop up, and round and smooth oblique convex tendon can be eliminated this phenomenon.The horizontal sectional drawing of oblique groove 2 is rectangle in the present embodiment.

As shown in Figure 3 and Figure 4, the horizontal sectional drawing of oblique groove 2 is wedge shape to embodiment 2.

Embodiment 3 is as shown in Fig. 5～Fig. 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 triangle.Air in pump cover can be drained by drain opening 9, therefore in the position near drain opening 9, the loss that oblique groove can cause flow is set, arrange and can reduce flow loss in the position away from drain opening 9, can reach again and eliminate continuous backflow and the effect of discharging noise.In embodiment 3, two oblique grooves 2 are adopted.

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

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

As shown in Figure 11 and Figure 12, be knockdown pump cover, in intake pipe part 7 wherein, be provided with oblique groove 2 and round and smooth oblique convex tendon 4, and form a complete entirety with pump cover part 8.

Claims

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

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

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

4. drainage pump cover according to claim 2, is characterized in that, described groove is arranged on water intake end face and near the sidewall relative with drain opening.

5. drainage pump cover according to claim 1, is characterized in that, the whole installation of described convex tendon is at the inwall of intake pipe.

6. drainage pump cover according to claim 2, is characterized in that, described pump cover is integrated type or combined type.

7. according to drainage pump cover described in claim 3～5 any one, it is characterized in that, described pump cover is integrated type or combined type.