CN213574645U

CN213574645U - Self-priming pump

Info

Publication number: CN213574645U
Application number: CN202022636576.0U
Authority: CN
Inventors: 刘小磊; 宋亚旗; 魏家明
Original assignee: Xinxiang Hanghong Aviation Electromechanical Equipment Co ltd
Current assignee: Xinxiang Hanghong Aviation Electromechanical Equipment Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-29
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a motor casing right-hand member is fixed on the spiral case, and the left end is fixed on the vacuum pump casing, spiral case, motor casing and vacuum pump casing are linked together, be equipped with import and export on the spiral case, the impeller is in the spiral case, the built-in stator of motor casing, rotor shaft pass this stator and the right-hand member is fixed the impeller, the fixed promotion swash plate in left end, the inside left side of vacuum pump casing is established one by the inclosed piston chamber of end cover, keeps away from end cover department on this piston chamber and is equipped with feed liquor check valve and play liquid check valve, and during this piston chamber was stretched into to piston rod one end, is equipped with reciprocating spring between the other end and the end cover, the promotion swash plate can contact and promote the piston rod when rotating along with the rotor shaft, and locking hydraulic pressure pipe one end. The technical scheme has strong self-priming capability, can effectively improve the working height, avoids the waste of output power and further improves the performance of the self-priming pump.

Description

Self-priming pump

Technical Field

The utility model belongs to the technical field of the pump, especially, relate to a self priming pump.

Background

The centrifugal pump is used as a common liquid and solid conveying mechanical structure and is widely applied in various fields, but with the social development and the continuous progress of science and technology in the application field, the performance requirement of the pump is higher and higher. The centrifugal pump has certain cavitation allowance and certain self-suction capacity, but the self-suction capacity of the centrifugal pump can not meet the requirements of the existing equipment far away for the complex diversity of modern working conditions.

SUMMERY OF THE UTILITY MODEL

To solve the technical problem, the task of the utility model is to provide a pump that possesses high efficiency, superstrong ability of inhaling certainly.

The utility model discloses a task is accomplished like this, and the motor casing right-hand member is fixed on the spiral case, and the left end is fixed on the vacuum pump casing, spiral case, motor casing and vacuum pump casing are linked together, be equipped with import and export on the spiral case, the impeller is in the spiral case, the built-in stator of motor casing, it is fixed that the rotor shaft passes this stator and right-hand member the impeller, the fixed promotion swash plate in left end, the inside left side of vacuum pump casing is established one and is equipped with feed liquor check valve and play liquid check valve by the inclosed piston chamber of end cover, keeps away from end cover department on this piston chamber, and during this piston chamber was stretched into to piston rod one end, is equipped with reciprocating spring between the other end and the end cover, promote the swash plate and can contact and promote the piston rod when rotating along with the rotor shaft. And a sealing ring is arranged at one end of the piston rod extending into the piston cavity. The action surface of the push inclined plate and the piston rod is an inclined curved surface, and a weight reduction groove is dug in the thicker inclined part, so that the center of gravity is kept at the center of the push inclined plate.

The utility model discloses has following effect: the technical scheme has strong self-absorption capacity and can effectively improve the working height. And the hydraulic pipe can be stopped to ensure that the piston rod at the left part can be thoroughly separated from the push inclined plate, so that the output work of the rotor shaft is completely transmitted to the impeller, the waste of the output work is avoided, and the performance of the self-priming pump is further improved.

Drawings

FIG. 1 is a sectional view of the structure of the present invention; FIG. 2 is a schematic view of a push inclined plate structure; fig. 3 is a schematic diagram of the explosion structure of the present invention.

Description of the drawings: 1. an inlet; 2. an outlet; 3. a volute; 4. an impeller; 5. a motor housing; 6. a stator; 7. a rotor shaft; 8. pushing the inclined plate; 81. a weight reduction groove; 9. a vacuum pump housing; 10. a liquid inlet check valve; 11. a liquid outlet one-way valve; 12. a piston rod; 13. a reciprocating spring; 14. a seal ring; 15. an end cap; 16. stopping the hydraulic pipe; 17. a piston chamber.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-3, a self-priming pump, wherein the right end of a motor housing 5 is fixed on a volute 3, the left end is fixed on a vacuum pump housing 9, the volute 3, the motor housing 5 and the vacuum pump housing 9 are communicated, the volute 3 is provided with an inlet 1 and an outlet 2, an impeller 4 is arranged in the volute 3, the motor housing 5 is internally provided with a stator 6, a rotor shaft 7 passes through the stator 6, the right end is fixed on the impeller 4, the left end is fixed with a push inclined plate 8, the left side inside the vacuum pump housing 9 is provided with a piston cavity 17 sealed by an end cover 15, a liquid inlet check valve 10 and a liquid outlet check valve 11 are arranged on the piston cavity 17 far from the end cover 15, one end of a piston rod 12 extends into the piston cavity 17, a reciprocating spring 13 is arranged between the other end and the end cover 15, the push inclined plate 8 can contact and push the piston rod 12 when rotating along with the rotor shaft 7, one end of a, one end is connected to the volute 3. The self-priming pump can be divided into three parts, namely a motor part consisting of a motor shell 5, a stator 6 and a rotor shaft 7, a centrifugal pump part consisting of a volute 3 and an impeller 4, and a vacuum pump part consisting of a vacuum pump shell 9, a liquid inlet one-way valve 10, a liquid outlet one-way valve 11, a piston rod 12, a reciprocating spring 13 and an end cover 15. The centrifugal pump part and the vacuum pump part are communicated through a stopping hydraulic pipe 16. When the self-priming pump is working normally, the stopping hydraulic pipe 16 can make the vacuum pump part be separated from working so as to make the whole output work outputted by motor part act on the centrifugal pump part.

The end of the piston rod 12 extending into the piston cavity 17 is provided with a sealing ring 14 to ensure sealing.

The action surfaces of the push inclined plate 8 and the piston rod 12 are inclined curved surfaces, and a weight reduction groove is dug in the thicker inclined part, so that the center of gravity is kept at the central position of the push inclined plate 8, and the stable operation of the self-priming pump is ensured.

When the mounting height is too high, the rotor shaft 7 in the self-priming pump drives the push inclined plate 8 to rotate, further pushes the piston rod 12 to reciprocate in the piston cavity 17 under the cooperation of the reciprocating spring 13, and then cooperates with the liquid inlet one-way valve 10 and the liquid outlet one-way valve 11 to achieve the purpose of pumping. Because the volute 3, the motor shell 5 and the vacuum pump shell 9 are communicated, gas in the whole shell can be pumped out, a vacuum cavity is formed in the self-sucking pump body, working liquid with low liquid level is pumped into the volute 3 under the action of the vacuum cavity until the volute 3 is filled with the working liquid, and thus the centrifugal pump part can normally work.

After the centrifugal pump part normally works, pressure is conveyed into a back piston cavity 17 of the piston rod 12 from the outlet 2 through a pipeline through the stopping hydraulic pipe 16, so that the piston rod 12 compresses the reciprocating spring 13 by utilizing hydraulic energy, the reciprocating spring 13 is in a compression state, the piston rod 12 cannot reset by utilizing the hydraulic energy, namely, the inclined plate 8 is pushed to be naturally separated from the piston rod 12, the rotor shaft 7 cannot transmit force to the piston rod 12, and the vacuum pump part stops working. The output work of the motor part is completely transmitted to the impeller 4, thereby avoiding the waste of the output work and further improving the performance of the self-priming pump.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected, and may communicate between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Claims

1. A self-priming pump is characterized in that the right end of a motor casing (5) is fixed on a volute (3), the left end of the motor casing (5) is fixed on a vacuum pump casing (9), the volute (3), the motor casing (5) and the vacuum pump casing (9) are communicated, an inlet (1) and an outlet (2) are arranged on the volute (3), an impeller (4) is arranged in the volute (3), a stator (6) is arranged in the motor casing (5), a rotor shaft (7) penetrates through the stator (6) and the right end of the impeller (4) is fixed, a push inclined plate (8) is fixed at the left end of the inside of the vacuum pump casing (9), a piston cavity (17) sealed by an end cover (15) is arranged at the left side of the inside of the vacuum pump casing (9), a liquid inlet one-way valve (10) and a liquid outlet one-way valve (11) are arranged at a position, far away from the end cover (15), one end of a piston rod (12), the push inclined plate (8) can contact and push a piston rod (12) when rotating along with the rotor shaft (7), one end of a stop hydraulic pipe (16) is connected to the position, close to the end cover (15), of the piston cavity (17), and the other end of the stop hydraulic pipe is connected to the volute (3).

2. A self-primer pump according to claim 1 wherein the end of the piston rod (12) extending into the piston chamber (17) is provided with a sealing ring (14).

3. The self-primer pump as recited in claim 1 wherein the reaction surface of the swash plate (8) and the piston rod (12) is a sloped curved surface and a weight-reducing groove is cut into the thicker sloped portion to maintain the center of gravity at the center of the swash plate (8).