CN216278523U

CN216278523U - Self-priming pump with high self-priming efficiency

Info

Publication number: CN216278523U
Application number: CN202122929600.4U
Authority: CN
Inventors: 林志强; 郑永镇
Original assignee: GUANGDONG SHUNDA MARINE ENGINEERING CO LTD
Current assignee: GUANGDONG SHUNDA MARINE ENGINEERING CO LTD
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-12
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a self-priming pump with high self-priming efficiency, which relates to the technical field of pumps and comprises a pump body, wherein a first wall body is arranged in the pump body, a water inlet cavity and a water drainage cavity are formed in the pump body through the first wall body, a first cavity body used for accommodating a power source of the self-priming pump is also arranged in the pump body, an impeller is arranged in the first cavity body, a pump cover is arranged on one side of the impeller, the water drainage cavity is arranged above the pump cover, the water drainage cavity is communicated with the water inlet cavity through a connecting pipe, at least one anti-backflow piece is arranged on the pump cover, the anti-backflow piece is arranged close to the back face of the impeller, and the anti-backflow piece is arranged close to the upper end of the pump cover.

Description

Self-priming pump with high self-priming efficiency

Technical Field

The utility model relates to the technical field of water pumps, in particular to a self-priming pump with high self-priming efficiency.

Background

The conventional self-priming centrifugal pump utilizes the working principle that centrifugal force is generated by rotation of an impeller to enable the inlet of the impeller to form vacuum, so that air in a water inlet pipe is sucked into the impeller on one hand, and liquid stored in a pump cavity enters the outer edge of the impeller through a water return hole on the other hand. The liquid and air are mixed at the outer edge of the impeller and then flow out of the pressurized-water chamber, and then enter the gas-water separation chamber at the upper part of the pump cavity. Because the density of the liquid is different from that of the air, the air is upwards discharged from the water outlet of the pump, and the liquid returns to the lower part of the pump cavity under the action of the self-weight and then enters the outer edge of the impeller from the water return hole. The air in the water inlet pipe of the pump is repeatedly and continuously discharged until the conveyed liquid is sucked up and completely fills the water inlet pipeline. However, due to the irregular reason of the hydraulic model of the water pump, the space between the impeller rear cover plate and the pump cover is large, so that air is easy to return to the pump cavity along with liquid, the air stays in the original pump cavity for a long time and is difficult to discharge, the self-suction efficiency is low, and 180-240 seconds are needed from the start of the water pump to the normal work of the water pump.

Therefore, a solution is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a self-priming pump with high self-priming efficiency, which effectively overcomes the defects in the background technology and improves the self-priming efficiency.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a from inhaling efficient self priming pump, includes the pump body, be equipped with first wall body in the pump body, pass through in the pump body first wall body forms intake antrum and drainage chamber, still be equipped with the first cavity that is used for holding self priming pump power supply in the pump body, be equipped with the impeller in the first cavity, one side of impeller is equipped with the pump cover, drainage chamber locates the top of pump cover, through setting up the connecting pipe intercommunication between drainage chamber and the intake antrum, one side of pump cover in be provided with pump body tongue on the pump body, be equipped with at least one backflow preventer on the pump cover, backflow preventer is close to the position setting of pump body tongue.

Furthermore, the backflow prevention piece is long and is arranged along the radial direction of the pump cover.

Further, a filter plate is arranged in the water inlet cavity and is close to the impeller.

Furthermore, the backflow prevention part is a reinforcing rib, and the reinforcing rib and the pump cover are integrally formed.

Furthermore, a first cavity and a second cavity are formed in the water inlet cavity at intervals of the filter plate, the impeller is installed in the second cavity, and the volume of the second cavity is smaller than that of the drainage cavity.

Further, still be equipped with driving motor in the pump body, the last drive shaft that is equipped with of driving motor, the drive shaft with impeller transmission is connected.

The self-priming pump with high self-priming efficiency has the beneficial effects that: the backflow preventing piece is arranged between the pump cover and the impeller, so that the distance between the back of the impeller and the pump cover is shortened under the condition that a hydraulic model is not influenced, the space for air to flow back to the water inlet cavity from the water discharge cavity is reduced, the air can be quickly discharged upwards along the water discharge cavity, the defects in the background technology are effectively overcome, the exhaust speed of the water pump is increased, and the self-priming efficiency is effectively improved; in addition, the whole structure is reasonable in arrangement, and subsequent maintenance is facilitated.

Drawings

FIG. 1 is an internal block diagram of a self-priming pump;

FIG. 2 is a schematic diagram of a portion of the internal structure of the self-primer pump.

Detailed Description

The utility model relates to a self-priming pump with high self-priming efficiency, which is described by combining the attached drawing.

As shown in fig. 1 to 2, as a preferred embodiment of the present invention:

the utility model provides a from inhaling efficient self priming pump, includes the pump body 1, be equipped with first wall body 2 in the pump body 1, pass through in the pump body 1 first wall body 2 forms intake antrum 3 and water drainage chamber 4, still be equipped with the first cavity 5 that is used for holding the self priming pump power supply in the pump body 1, be equipped with impeller 6 in the first cavity 5, one side of impeller 6 is equipped with pump cover 7, water drainage chamber 4 is located the top of pump cover 7, through setting up the 8 intercommunications of connecting pipe between water drainage chamber 4 and the intake antrum 3, one side of pump cover 7 in be provided with pump body tongue 14 on the pump body 1, be equipped with at least one anti-reflux pump cover 9 on 7, anti-reflux piece 9 is close to the position setting of pump body tongue 14.

Wherein, the setting of backflow prevention piece 9 can shorten the interval between 6 backs of impeller and the pump cover 7, has reduced the space that the air flows back into intake antrum 3 by drainage chamber 4, makes the air up discharge along drainage chamber 4 fast to improve from inhaling of self priming pump efficiency.

In addition, the backflow prevention part 9 is arranged close to the pump body throat tongue 14, the backflow prevention part 9 is matched with the pump body throat tongue 14, the distance between the back of the impeller 6 and the pump cover 7 is further shortened, air quickly flows back to the space of the water inlet cavity 3 from the drainage cavity 4, and the self-priming efficiency of the self-priming pump is further improved.

Backflow prevention piece 9 is rectangular form, backflow prevention piece 9 is vertical form setting, backflow prevention piece follows the radial direction setting of pump cover is rectangular form with backflow prevention piece 9 setting, can shorten the interval between 6 backs of impeller and the pump cover 7 along impeller 6's horizontal extension line direction to reduce the space that the air flows back into intake antrum 3 by drainage antrum 4, improve from inhaling of self priming pump efficiency.

In order to realize the preliminary filtration of the water flowing into the drainage cavity 4, a filter plate 10 is arranged in the water inlet cavity 3, and the filter plate 10 is close to the impeller 6.

Preferably, backflow prevention part 9 is the strengthening rib, the strengthening rib with integrated into one piece sets up between pump cover 7, and wherein, the strengthening rib possesses certain height, and sound construction is stable moreover, can improve the installation stability on pump cover 7, in addition, the strengthening rib with integrated into one piece sets up between the pump cover 7, very big improvement structural strength between the two.

The inlet chamber 3 has a first chamber 11 and a second chamber 12 formed therein at an interval of the filter plate 10, the impeller 6 is installed in the second chamber 12, and the volume of the second chamber 12 is smaller than that of the drain chamber 4, thereby facilitating the flow of fluid between the first chamber 11 and the second chamber 12.

The power source is a driving motor 13, a driving shaft is arranged on the driving motor 13, and the driving shaft is in transmission connection with the impeller 6.

The self-priming pump with high self-priming efficiency has the beneficial effects that: by arranging the backflow prevention part 9 between the pump cover 7 and the impeller 6, under the condition of not influencing a hydraulic model, the distance between the back surface of the impeller 6 and the pump cover 7 is shortened, the space for air to flow back to the water inlet cavity 3 from the water discharge cavity 4 is reduced, so that the air can be quickly discharged upwards along the water discharge cavity 4, the defects in the background technology are effectively overcome, the exhaust speed of the water pump is increased, and the self-priming efficiency is effectively improved; in addition, the whole structure is reasonable in arrangement, and subsequent maintenance is facilitated.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a from inhaling efficient self priming pump, includes the pump body, be equipped with first wall body in the pump body, pass through in the pump body first wall body forms intake antrum and drainage chamber, still be equipped with the first cavity that is used for holding self priming pump power supply in the pump body, be equipped with the impeller in the first cavity, one side of impeller is equipped with the pump cover, drainage chamber locates the top of pump cover, through setting up the connecting pipe intercommunication between drainage chamber and the intake antrum, one side of pump cover in be provided with pump body tongue on the pump body, its characterized in that, be equipped with at least one backflow preventer on the pump cover, backflow preventer is close to the position setting of pump body tongue.

2. The self-priming pump of claim 1, wherein said backflow prevention member is elongated and is disposed along a radial direction of said pump cover.

3. The self-priming pump of claim 1 having high self-priming efficiency wherein a filter plate is disposed within said intake chamber, said filter plate being disposed adjacent to said impeller.

4. The self-priming pump of claim 1 having high self-priming efficiency wherein the backflow prevention member is a stiffener, the stiffener being integrally formed with the pump cover.

5. The self-priming pump of claim 3, wherein said intake chamber defines first and second chambers spaced below a filter plate within said intake chamber, said second chamber housing said impeller, said second chamber having a volume less than a volume of said discharge chamber.

6. The self-priming pump with high self-priming efficiency according to claim 1, wherein a driving motor is further disposed in the pump body, a driving shaft is disposed on the driving motor, and the driving shaft is in transmission connection with the impeller.