CN112302928A

CN112302928A - Displacement pump

Info

Publication number: CN112302928A
Application number: CN202011263347.7A
Authority: CN
Inventors: 蓝晶晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-02-02

Abstract

The invention discloses a positive displacement pump, which comprises a pump body, an inner pump cover and a pump shaft, and is characterized in that: be equipped with the episphere in the pump chamber, the lower hemisphere, left side positioning seat and right positioning seat, left side positioning seat switches on respectively with right positioning seat and sets up in the inner of feed liquor chamber and play liquid chamber, and the face that left side positioning seat and right positioning seat are relative sets up to the arc sealed face, the episphere can level rotate and set up between the upper portion of left side positioning seat and right positioning seat, and the episphere links to each other with the transmission of pump shaft lower extreme, but lower hemisphere horizontal hunting sets up between the lower part of left side positioning seat and right positioning seat, be equipped with the centre ball between episphere and the lower hemisphere, be equipped with equally spaced blade of round on the horizontal circumference of centre ball, the vertical periphery of centre ball can be followed respectively to each blade reciprocates, and the lower extreme butt of blade is on the up end of lower hemisphere, the upper end of blade can reciprocate. The invention can adjust the liquid outlet flow, and is convenient and practical.

Description

Displacement pump

Technical Field

The invention relates to an improved invention of a displacement pump, in particular to an improved invention of a displacement pump with adjustable liquid outlet flow.

Background

The displacement pump is widely applied to the industries of production, agricultural production, mining and metallurgical industry, electric power department, nuclear power station, national defense construction, pharmacy, water conservancy and the like in the chemical and petroleum departments, and the displacement pump is a pump for conveying liquid by utilizing the change of the volume in a pump cylinder and has the defects that: in that the volume ratio of the suction side to the discharge side is fixed, i.e. the flow is constant, conventional positive displacement pumps cannot do so when the flow on the outlet side of the pump needs to be changed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a convenient and practical displacement pump capable of adjusting the liquid outlet flow.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme: this kind of positive displacement pump, including the pump body, pump inner cup and pump shaft, be equipped with the feed liquor chamber and the play liquid chamber of pump chamber and intercommunication pump chamber left and right sides in the pump body, the pump bonnet is located the pump body upper port, the pump shaft rotates and wears to locate on the pump bonnet, and the pump shaft upper end links to each other its characterized in that with the power device transmission: an upper hemisphere, a lower hemisphere, a left positioning seat and a right positioning seat are arranged in the pump cavity, the left positioning seat and the right positioning seat are respectively communicated and arranged at the inner ends of the liquid inlet cavity and the liquid outlet cavity, the surface, opposite to the left positioning seat and the right positioning seat, of the left positioning seat is an arc-shaped sealing surface, the upper hemisphere can be horizontally and rotatably arranged between the upper portions of the left positioning seat and the right positioning seat and in sealing fit with the left positioning seat and the right positioning seat, the upper hemisphere is in transmission connection with the lower end of the pump shaft, the lower hemisphere can be arranged between the lower portions of the left positioning seat and the right positioning seat in a left-right swinging manner and in sealing fit with the lower portions of the left positioning seat and the right positioning seat, the angle between the upper end face of the corresponding lower hemisphere and the horizontal plane can be adjusted, the lower hemisphere is provided with, the horizontal circumference of the central sphere is provided with a circle of equally spaced blades, each blade can move up and down along the vertical circumference of the central sphere, the lower ends of the blades are abutted against the upper end face of the lower hemisphere, the upper ends of the blades can move up and down and are arranged in guide grooves which are formed in the upper hemisphere at equal intervals, and the guide grooves are internally provided with compression springs for resetting the blades.

Adjusting part is including adjusting pole, adjusting spring and adjusting coin, adjust coin and connect in the lower surface of hemisphere down, corresponding regulation pearl along with hemisphere horizontal hunting down, sets up on the swing route of regulation pearl adjusting spring, adjusting spring one end is connected on right positioning seat, and the adjusting spring other end is connected in the right flank of adjusting the pearl, but adjust pole horizontal arrangement and horizontal migration and wear to locate the pump body and left positioning seat on, adjust the pole right-hand member and adjust the transmission cooperation of pearl left surface, adjust the pole left end and expose outside locating the pump body.

A circle of T-shaped drag hooks which are equally spaced are arranged on the horizontal circumferential surface of the central ball, T-shaped pull grooves are formed in the inner ends of the blades, and the T-shaped drag hooks and the T-shaped pull grooves are matched with each other to achieve that the blades move up and down along the vertical circumferential surface of the central ball.

The power device is a motor, an output shaft of the motor is in transmission connection with the pump shaft, the motor is installed on a suspension body, and the suspension body is installed on the pump body through a support.

And a sealing ring is arranged between the upper part of the pump inner cover and the pump shaft, and is pressed by a gland which is fixed on the pump cover.

The improved displacement pump has the beneficial effects that the volume ratio of the liquid suction area (the area between the two blades adjacent to the inner end of the liquid inlet cavity) to the liquid discharge area (the area between the two blades adjacent to the inner end of the liquid outlet cavity) can be adjusted by the adjusting part, so that the medium flow at the position of the liquid outlet cavity of the displacement pump can be adjusted.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view E-E of fig. 1 according to the present invention.

Fig. 3 is a structural diagram of the lower end and the upper hemisphere of the pump shaft of the invention.

Fig. 4 is a cross-sectional view taken along line D-D of fig. 3 in accordance with the present invention.

Fig. 5 is a structural view of the present invention without a power unit.

Detailed Description

The drawings show the structure of the invention, and the details thereof are further described below with reference to the drawings. In the embodiment, the positive displacement pump comprises a pump body 1, an inner pump cover 8 and a pump shaft 10, wherein a pump cavity, a liquid inlet cavity 2 and a liquid outlet cavity 19 communicating the left side and the right side of the pump cavity are arranged in the pump body 1, the pump cover is arranged at the upper end of the pump body 1, the pump shaft 10 is rotatably arranged on the pump cover in a penetrating manner, the upper end of the pump shaft 10 is in transmission connection with a power device 13, an upper sphere 17, a lower hemisphere 21, a left positioning seat 3 and a right positioning seat 20 are arranged in the pump cavity, the left positioning seat 3 and the right positioning seat 20 are provided with central holes and are respectively arranged at the inner ends of the liquid inlet cavity 2 and the liquid outlet cavity 19 in a conducting manner, the surface of the left positioning seat 3 opposite to the right positioning seat 20 is an arc-shaped sealing surface, a sealing layer 7 is arranged on the arc-shaped sealing surface, the upper sphere 17, the lower hemisphere 21 can swing left and right between the lower parts of the left positioning seat 3 and the right positioning seat 20 and is in sealing fit with the lower parts, the angle between the upper end surface of the corresponding lower hemisphere 21 and the horizontal plane can be adjusted, the lower hemisphere 21 is provided with an adjusting part, a center ball 18 is arranged between the upper hemisphere 17 and the lower hemisphere 21, the lower end surface center area of the corresponding upper hemisphere 17 and the upper end surface center area of the lower hemisphere 21 are respectively provided with a cavity capable of accommodating the upper part and the lower part of the center ball 18, a circle of equally spaced blades 4 are arranged on the horizontal circumference surface of the center ball 18, each blade 4 can respectively move up and down along the vertical circumference surface of the center ball 18, the lower ends of the blades 4 are abutted against the upper end surface of the lower hemisphere 21, the upper ends of the blades 4 can move up and down and be arranged in guide grooves 27 which are equally spaced on the upper circumference of the upper hemisphere 17, so, and a compression spring 16 of the reset blade 4 is arranged in the guide groove 27, one end of the compression spring 16 is abutted against the upper groove wall of the guide groove 27, the other end of the compression spring 16 is abutted against the upper end of the blade 4, and the lower end of the blade 4 is always pressed against the upper end surface of the lower hemisphere 21 under the action of the compression spring 16.

As a further improved specific implementation manner, the adjusting component includes an adjusting rod 24, an adjusting spring 22 and an adjusting coin, the adjusting coin is connected to the lower surface of the lower hemisphere 21, the corresponding adjusting ball 23 swings left and right along with the lower hemisphere 21, the adjusting spring 22 is disposed on the swing path of the adjusting ball 23, one end of the adjusting spring 22 is connected to the right positioning seat 20, the other end of the adjusting spring 22 is connected to the right side surface of the adjusting ball 23, the adjusting rod 24 is horizontally arranged and can horizontally move to penetrate through the pump body 1 and the left positioning seat 3, the right end of the adjusting rod 24 is in transmission fit with the left side surface of the adjusting ball 23, and the left end of the adjusting rod 24 is exposed outside the pump body 1. When the adjusting rod works, the adjusting rod 24 and the adjusting spring 22 can push the adjusting coin to swing left or right, so that the lower hemisphere 21 is driven to swing left and right, the angle between the upper end face of the lower hemisphere 21 and the horizontal plane is adjusted, and the upper end face of the lower hemisphere 21 forms a required inclined plane.

As a further improved specific implementation manner, a circle of T-shaped drag hooks 5 at equal intervals are arranged on the horizontal circumferential surface of the central ball 18, a T-shaped pull groove 6 is arranged at the inner end of the blade 4, the T-shaped drag hooks 5 are limited in the T-shaped pull groove 6 to move up and down, that is, the T-shaped drag hooks 5 and the T-shaped pull grooves 6 are matched with each other to realize the up-and-down movement of the blade 4 along the vertical circumferential surface of the central ball 18.

In a further improved embodiment, the power device 13 is a motor, an output shaft of the motor is in transmission connection with the pump shaft 10, a bearing 11 is arranged at a connecting end, the bearing 11 is mounted on the bracket 9, the motor is mounted on the suspension body 12, and the suspension body 12 is mounted on the pump body 1 through the bracket 9.

As a further improved embodiment, a sealing ring 15 is arranged between the upper part of the pump inner cover 8 and the pump shaft 10, the sealing ring 15 is pressed by a gland 14, and the gland 14 is fixed on the pump cover, so that the sealing performance between the pump inner cover 8 and the pump shaft 10 is improved.

The operation process of the invention is as follows: starting a motor, driving a pump shaft 10 to rotate by the motor, driving an upper hemisphere 17 to rotate by the pump shaft 10, driving blades 4 to rotate by the upper hemisphere 17 by using a guide groove 27, enabling the blades 4 to move downwards along the vertical circumferential surface of a central sphere 18 when the blades 4 rotate from the upper part of the inclined surface to the lower part of the inclined surface of the upper end surface of the lower hemisphere 21 under the action of a compression spring 16, increasing the space volume between the two blades 4 to form a liquid suction area 25 with negative pressure (an area between the two blades 4 adjacent to the inner end of the liquid inlet cavity 2), enabling liquid in the liquid inlet cavity 2 to enter the liquid suction area 25, enabling the corresponding blades 4 to move upwards along the vertical circumferential surface of the central sphere 18 when the blades 4 rotate from the lower part of the inclined surface to the upper part of the inclined surface of the upper end surface of the lower hemisphere 21, reducing the space volume between the two blades 4 to form a liquid discharge area 26 with positive pressure (an area adjacent to the inner end of the liquid outlet cavity 19), when the flow in the liquid outlet cavity 19 needs to be adjusted, the adjusting rod 24 and the adjusting spring 22 can push and adjust the coin to swing left or right, so as to adjust the angle between the upper end surface of the lower hemisphere 21 and the horizontal plane, the ratio between the space volume of the liquid suction area 25 and the space volume of the liquid outlet area 26 between the two blades 4 is changed, and when the flow in the liquid outlet cavity 19 meets the requirement, the adjustment is stopped.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a displacement pump, is including the pump body, pump inner cup and pump shaft, be equipped with the feed liquor chamber and the play liquid chamber of pump chamber and intercommunication pump chamber left and right sides in the pump body, the pump bonnet is located the pump body upper port, the pump shaft rotates and wears to locate on the pump bonnet, and the pump shaft upper end links to each other its characterized in that with the power device transmission: an upper hemisphere, a lower hemisphere, a left positioning seat and a right positioning seat are arranged in the pump cavity, the left positioning seat and the right positioning seat are respectively communicated and arranged at the inner ends of the liquid inlet cavity and the liquid outlet cavity, the surface, opposite to the left positioning seat and the right positioning seat, of the left positioning seat is an arc-shaped sealing surface, the upper hemisphere can be horizontally and rotatably arranged between the upper portions of the left positioning seat and the right positioning seat and in sealing fit with the left positioning seat and the right positioning seat, the upper hemisphere is in transmission connection with the lower end of the pump shaft, the lower hemisphere can be arranged between the lower portions of the left positioning seat and the right positioning seat in a left-right swinging manner and in sealing fit with the lower portions of the left positioning seat and the right positioning seat, the angle between the upper end face of the corresponding lower hemisphere and the horizontal plane can be adjusted, the lower hemisphere is provided with, the horizontal circumference of the central sphere is provided with a circle of equally spaced blades, each blade can move up and down along the vertical circumference of the central sphere, the lower ends of the blades are abutted against the upper end face of the lower hemisphere, the upper ends of the blades can move up and down and are arranged in guide grooves which are formed in the upper hemisphere at equal intervals, and the guide grooves are internally provided with compression springs for resetting the blades.

2. The positive displacement pump as defined in claim 1, wherein: adjusting part is including adjusting pole, adjusting spring and adjusting coin, adjust coin and connect in the lower surface of hemisphere down, corresponding regulation pearl along with hemisphere horizontal hunting down, sets up on the swing route of regulation pearl adjusting spring, adjusting spring one end is connected on right positioning seat, and the adjusting spring other end is connected in the right flank of adjusting the pearl, but adjust pole horizontal arrangement and horizontal migration and wear to locate the pump body and left positioning seat on, adjust the pole right-hand member and adjust the transmission cooperation of pearl left surface, adjust the pole left end and expose outside locating the pump body.

3. The positive displacement pump as defined in claim 1, wherein: a circle of T-shaped drag hooks which are equally spaced are arranged on the horizontal circumferential surface of the central ball, T-shaped pull grooves are formed in the inner ends of the blades, and the T-shaped drag hooks and the T-shaped pull grooves are matched with each other to achieve that the blades move up and down along the vertical circumferential surface of the central ball.

4. The positive displacement pump as defined in claim 1, wherein: the power device is a motor, an output shaft of the motor is in transmission connection with the pump shaft, the motor is installed on a suspension body, and the suspension body is installed on the pump body through a support.

5. The positive displacement pump as defined in claim 1, wherein: and a sealing ring is arranged between the upper part of the pump inner cover and the pump shaft, and is pressed by a gland which is fixed on the pump cover.