CN215860647U

CN215860647U - Bidirectional fluid pump

Info

Publication number: CN215860647U
Application number: CN202120504417.7U
Authority: CN
Inventors: 程潇然; 赵伟国
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2022-02-18
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a bidirectional fluid pump, comprising: a pump body; the top surface and the bottom surface of the pump body are respectively provided with a driving device; a first movable hole and a second movable hole are respectively formed in the center of the bottom surface and the center of the top surface of the inner cavity of the pump body; auxiliary plates are respectively arranged on two sides of the inner cavity of the pump body; the bottom surfaces of the two auxiliary plates are fixedly connected with a first connecting plate; the bottom surface of the first connecting plate is provided with a first connecting rod; one end of the first connecting rod is fixedly connected with the center of the bottom surface of the first connecting plate; the other end of the first connecting rod penetrates through the first movable hole and is connected with one of the driving devices; a piston plate is arranged in the middle of the inner cavity of the pump body; the top surface of the second connecting plate is provided with a second connecting rod; one end of the second connecting rod is fixedly connected with the center of the top surface of the second connecting plate; the other end of the second connecting rod penetrates through the second movable hole to be connected with the other driving device; the piston plate and the inner wall of the pump body enclose a first cavity and a second cavity; the first cavity and the second cavity are both provided with a water inlet and a water outlet.

Description

Bidirectional fluid pump

Technical Field

The utility model relates to the technical field of fluid pumps, in particular to a bidirectional fluid pump.

Background

The fluid pump consists of a cylinder body and a driving device, and the driving device drives a gear shaft and a piston in the cylinder body to move. The piston moves to increase or reduce the volume of the cylinder inner cavity, and the cylinder inner cavity and the outside generate pressure difference, so that the fluid is sucked or discharged by the fluid pump. In the prior art, the gear transmission has high requirements on manufacturing and mounting precision, high price and high vibration and noise when the precision is low; in addition, in the prior art, only one suction or discharge of the fluid pump can be realized each time the piston moves upward or downward, which results in low working efficiency of the fluid pump, and therefore, there is a need for further improvement of the fluid pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bidirectional fluid pump, which solves the problems in the prior art, can realize uninterrupted action of a pump body, improves the working efficiency, and directly drives a cam by a motor, thereby reducing the consumption of kinetic energy and improving the working efficiency.

In order to achieve the purpose, the utility model provides the following scheme: the present invention provides a bidirectional fluid pump comprising: a pump body; the top surface and the bottom surface of the pump body are respectively provided with a driving device; a first movable hole and a second movable hole are respectively formed in the center of the bottom surface and the center of the top surface of the inner cavity of the pump body; auxiliary plates are respectively arranged on two sides of the inner cavity of the pump body; the bottom surfaces of the two auxiliary plates are fixedly connected with a first connecting plate; a first connecting rod is arranged on the bottom surface of the first connecting plate; one end of the first connecting rod is fixedly connected with the center of the bottom surface of the first connecting plate; the other end of the first connecting rod penetrates through the first movable hole and is connected with one of the driving devices; a piston plate is arranged in the middle of the inner cavity of the pump body; the bottom surface of the piston plate is in sliding contact with the top surface of the first connecting plate; two end faces of the piston plate are in sliding contact with the inner wall of the pump body; the top surfaces and the two end surfaces of the two auxiliary plates are in sliding contact with the inner wall of the pump body; the top surface of the piston plate is fixedly connected with a second connecting plate; the top surface of the second connecting plate is provided with a second connecting rod; one end of the second connecting rod is fixedly connected with the center of the top surface of the second connecting plate; the other end of the second connecting rod penetrates through the second movable hole and is connected with the other driving device; the piston plate and the inner wall of the pump body enclose a first cavity and a second cavity; the first cavity and the second cavity are both provided with a water inlet and a water outlet.

Preferably, the moving directions of the piston plate and the auxiliary plate are opposite, the volumes of a first cavity and a second cavity formed between the piston plate and the auxiliary plates positioned on two sides of the piston plate are changed, the piston plate and the auxiliary plate which surround the first cavity move relatively to ensure that the volume of the first cavity is rapidly reduced, the water outlet discharges water outwards, the auxiliary plate and the piston plate which surround the second cavity move in opposite directions to ensure that the volumes of the auxiliary plate and the piston plate are rapidly increased, and the water inlet begins to absorb water; when the piston plate moves towards the other direction, the water inlet of the first cavity body is filled with water, and the water outlet of the second cavity body is drained, so that the pump body can continuously act, and the working efficiency is improved; the piston plate and the auxiliary plate move synchronously, the movement stroke of the piston plate and the auxiliary plate is shortened, and compared with the single piston in the prior art, the piston plate and the auxiliary plate move, and the working efficiency is greatly improved.

The drive device comprises a drive housing; the top surface of the driving shell is fixedly connected with the bottom surface of the pump body; the top surface of the driving shell is provided with an auxiliary hole matched with the first movable hole; connecting cylinders are fixedly connected to two side surfaces of the inner cavity of the driving shell respectively; one end face of the connecting cylinder is open; the inner walls of the two connecting cylinders are respectively connected with a piston rod in a sliding way; one end of each of the two piston rods is provided with a spring; one end of the spring is fixedly connected with the piston rod; the other end of the spring is fixedly connected with the side face of the connecting cylinder; the other ends of the two piston rods are provided with driving pieces; the driving device positioned on the top surface of the pump body and the driving device positioned on the bottom surface of the pump body are symmetrically arranged around the pump body.

The driving piece comprises a rectangular shell; two side surfaces of the rectangular shell are fixedly connected with the two piston rods respectively; a cam is arranged in the rectangular shell; a transmission shaft is fixedly connected to the top surface of the cam; the transmission shaft is in transmission connection with a motor; the motor is fixedly connected to the side surface of the inner cavity of the driving shell.

Preferably, the distance between the axle center of the transmission shaft and the arc top of the cam is half of the height of the rectangular shell, the width of the rectangular shell is equal to the maximum wheel diameter of the cam, the peripheral surface of the cam is in sliding connection with the inner wall of the rectangular shell, when the motor drives the cam to rotate, the rectangular shell starts to linearly reciprocate to drive the piston plate and the auxiliary plate to move, and the pump body starts to operate; and the driving piece has simple structure, the cam is directly driven by the motor, the consumption of kinetic energy is reduced, and the working efficiency is improved.

Two side surfaces of the pump body, which are close to the two auxiliary plates, are respectively provided with a vent hole; a filter layer is fixedly connected in the vent hole; and a first one-way valve and a second one-way valve are fixedly connected in the water inlet and the water outlet.

Preferably, the first check valve controls fluid to enter, and the second check valve controls fluid to discharge, so that uninterrupted action of the pump body is realized, and the working efficiency is improved.

Preferably, the end surfaces of the piston plate and the auxiliary plate are tightly connected with the inner wall of the pump body, so that a vacuum cavity is formed between the auxiliary plate and the side wall of the pump body, the transmission efficiency is influenced, and the vacuum cavity is communicated with the external atmosphere through the vent hole, so that the energy loss of the motor is reduced; the setting of filter layer can filter external dust or impurity, has avoided having the impurity to pile up the accessory plate stroke that arouses and has reduced.

Sealing grooves are respectively formed in the outer walls of the orifices of the first movable hole and the second movable hole; and a sealing gasket is fixedly connected in the sealing groove.

Preferably, the sealing groove is formed in an annular rectangular shape, and the sealing gasket is matched with the sealing groove in shape; the sealed setting of filling up avoids the fluid to get into in the drive casing, increases pump body life.

Two opposite end surfaces of the first connecting plate and the second connecting plate are in sliding connection with the other two opposite side surfaces of the inner cavity of the pump body; the bottom surface of the first connecting plate is in sliding connection with the bottom surface of the inner cavity of the pump body; the second connecting plate is in sliding connection with the top surface of the inner cavity of the pump body.

The bottom surface of the piston plate is in sliding connection with the top surface of the first connecting plate; and two end surfaces of the piston plate are in sliding connection with the inner wall of the pump body. The top surfaces and the two end surfaces of the two auxiliary plates are in sliding connection with the inner wall of the pump body.

The utility model discloses the following technical effects: the moving directions of the piston plate and the auxiliary plate are opposite, the volumes of a first cavity and a second cavity formed between the piston plate and the auxiliary plate positioned on two sides of the piston plate are changed, namely the piston plate and the auxiliary plate which surround the first cavity move relatively to ensure that the volume of the first cavity is rapidly reduced, the water outlet discharges water outwards, the auxiliary plate and the piston plate which surround the second cavity move in opposite directions to ensure that the volumes of the auxiliary plate and the piston plate are rapidly increased, and the water inlet begins to absorb water; when the piston plate moves towards the other direction, the water inlet of the first cavity body is filled with water, and the water outlet of the second cavity body is drained, so that the pump body can continuously act, and the working efficiency is improved; the piston plate and the auxiliary plate move synchronously, so that the movement stroke is shortened, and compared with the movement of a single piston in the prior art, the working efficiency is greatly improved; when the motor drives the cam to rotate, the rectangular shell starts to linearly reciprocate to drive the piston plate and the auxiliary plate to move, and the pump body starts to operate; and the driving piece has simple structure, the cam is directly driven by the motor, the consumption of kinetic energy is reduced, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

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

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic structural diagram of the driving member of the present invention.

Fig. 4 is a schematic structural diagram of a first connecting plate according to the present invention.

Fig. 5 is a schematic structural view of a second connecting plate according to the present invention.

The pump comprises a pump body 1, a first movable hole 2, a second movable hole 3, an auxiliary plate 4, a first connecting plate 5, a first connecting rod 6, a piston plate 7, a second connecting plate 8, a second connecting rod 9, a first cavity 10, a second cavity 11, a driving shell 12, an auxiliary hole 13, a connecting cylinder 14, a piston rod 15, a spring 16, a rectangular shell 17, a cam 18, a transmission shaft 19, a motor 20, a filter layer 21, a first one-way valve 22, a second one-way valve 23 and a sealing gasket 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The present invention provides a bidirectional fluid pump comprising: a pump body 1; the top surface and the bottom surface of the pump body 1 are respectively provided with a driving device; a first movable hole 2 and a second movable hole 3 are respectively formed in the center of the bottom surface and the center of the top surface of the inner cavity of the pump body 1; auxiliary plates 4 are respectively arranged on two sides of the inner cavity of the pump body 1; the bottom surfaces of the two auxiliary plates 4 are fixedly connected with a first connecting plate 5; a first connecting rod 6 is arranged on the bottom surface of the first connecting plate 5; one end of the first connecting rod 6 is fixedly connected with the center of the bottom surface of the first connecting plate 5; the other end of the first connecting rod 6 penetrates through the first movable hole 2 and is connected with one of the driving devices; a piston plate 7 is arranged in the middle of the inner cavity of the pump body 1; the bottom surface of the piston plate 7 is in sliding contact with the top surface of the first connecting plate 5; two end faces of the piston plate 7 are in sliding contact with the inner wall of the pump body 1; the top surfaces and two end surfaces of the two auxiliary plates 4 are in sliding contact with the inner wall of the pump body 1; the top surface of the piston plate 7 is fixedly connected with a second connecting plate 8; the top surface of the second connecting plate 8 is provided with a second connecting rod 9; one end of a second connecting rod 9 is fixedly connected with the center of the top surface of the second connecting plate 8; the other end of the second connecting rod 9 penetrates through the second movable hole 3 and is connected with another driving device; the two auxiliary plates 4, the piston plate 7 and the inner wall of the pump body 1 enclose a first cavity 10 and a second cavity 11; the first cavity 10 and the second cavity 11 are both provided with a water inlet and a water outlet.

The drive means comprises a drive housing 12; the top surface of the driving shell 12 is fixedly connected with the bottom surface of the pump body 1; the top surface of the driving shell 12 is provided with an auxiliary hole 13 matched with the first movable hole 2; two side surfaces of the inner cavity of the driving shell 12 are respectively fixedly connected with a connecting cylinder 14; one end face of the connecting cylinder 14 is open; the inner walls of the two connecting cylinders 14 are respectively connected with a piston rod 15 in a sliding way; one end of the two piston rods 15 is provided with a spring 16; one end of the spring 16 is fixedly connected with the piston rod 15; the other end of the spring 16 is fixedly connected with the side surface of the connecting cylinder 14; the other ends of the two piston rods 15 are provided with driving pieces; the driving device on the top surface of the pump body 1 and the driving device on the bottom surface of the pump body are symmetrically arranged around the pump body.

The drive member comprises a rectangular housing 17; two side surfaces of the rectangular shell 17 are fixedly connected with the two piston rods 15 respectively; a cam 18 is arranged in the rectangular shell 17; a transmission shaft 19 is fixedly connected to the top surface of the cam 18; the transmission shaft 19 is in transmission connection with a motor 20; the motor 20 is fixed on the side of the driving shell 12.

Two side surfaces of the pump body 1 close to the two auxiliary plates 4 are respectively provided with a vent hole; a filter layer 21 is fixedly connected in the vent hole; a first one-way valve 22 and a second one-way valve 23 are fixedly connected in the water inlet and the water outlet.

Sealing grooves are respectively formed in the outer walls of the orifices of the first movable hole 2 and the second movable hole 3; a seal gasket 24 is fixedly connected in the seal groove.

Two opposite end surfaces of the first connecting plate 5 and the second connecting plate 8 are in sliding connection with the other two opposite side surfaces of the inner cavity of the pump body 1; the bottom surface of the first connecting plate 5 is in sliding connection with the bottom surface of the inner cavity of the pump body 1; the second connecting plate 8 is in sliding connection with the top surface of the inner cavity of the pump body 1

The bottom surface of the piston plate 7 is in sliding connection with the top surface of the first connecting plate 5; two end faces of the piston plate 7 are in sliding connection with the inner wall of the pump body 1. The top surfaces and two end surfaces of the two auxiliary plates 4 are in sliding connection with the inner wall of the pump body 1.

In one embodiment of the present invention, the motor 20 is driven, the cam 18 starts to rotate in the rectangular housing 17, the peripheral surface of the cam 18 abuts against the inner wall of the rectangular housing 17, so that the rectangular housing 17 starts to linearly reciprocate, the first connecting plate 5 and the second connecting plate 8 are driven to start to displace, the piston plate 7 and the auxiliary plate 4 move in opposite directions, the piston plate 7 and the auxiliary plate 4 which surround the first cavity 10 move relatively, the volume of the first cavity 10 is rapidly reduced, the water outlet discharges water outwards, and the water inlet is closed under the action of the first one-way valve 22; the auxiliary plate 4 and the piston plate 7 which enclose the second cavity 11 move in opposite directions, so that the volume of the auxiliary plate and the piston plate is rapidly increased, the water inlet starts to absorb water, and the water outlet is closed under the action of the second one-way valve 13; when the piston plate 7 moves towards the other direction, water enters the water inlet of the first cavity 10 and is drained from the water outlet of the second cavity 11.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A bi-directional fluid pump, comprising: a pump body (1); the top surface and the bottom surface of the pump body (1) are respectively provided with a driving device; a first movable hole (2) and a second movable hole (3) are respectively formed in the center of the bottom surface and the center of the top surface of the inner cavity of the pump body (1); auxiliary plates (4) are respectively arranged on two sides of the inner cavity of the pump body (1); the bottom surfaces of the two auxiliary plates (4) are fixedly connected with a first connecting plate (5); a first connecting rod (6) is arranged on the bottom surface of the first connecting plate (5); one end of the first connecting rod (6) is fixedly connected with the center of the bottom surface of the first connecting plate (5); the other end of the first connecting rod (6) penetrates through the first movable hole (2) and is connected with one of the driving devices; a piston plate (7) is arranged in the middle of the inner cavity of the pump body (1); the bottom surface of the piston plate (7) is in sliding contact with the top surface of the first connecting plate (5); two end faces of the piston plate (7) are in sliding contact with the inner wall of the pump body (1); the top surfaces and two end surfaces of the two auxiliary plates (4) are in sliding contact with the inner wall of the pump body (1); a second connecting plate (8) is fixedly connected to the top surface of the piston plate (7); a second connecting rod (9) is arranged on the top surface of the second connecting plate (8); one end of the second connecting rod (9) is fixedly connected with the center of the top surface of the second connecting plate (8); the other end of the second connecting rod (9) penetrates through the second movable hole (3) and is connected with the other driving device; the piston plate (7) and the inner wall of the pump body (1) enclose a first cavity (10) and a second cavity (11); the first cavity (10) and the second cavity (11) are both provided with a water inlet and a water outlet.

2. A bi-directional fluid pump as recited in claim 1, wherein: the drive device comprises a drive housing (12); the top surface of the driving shell (12) is fixedly connected with the bottom surface of the pump body (1); the top surface of the driving shell (12) is provided with an auxiliary hole (13) matched with the first movable hole (2); two side surfaces of the inner cavity of the driving shell (12) are respectively fixedly connected with a connecting cylinder (14); one end face of the connecting cylinder (14) is open; the inner walls of the two connecting cylinders (14) are respectively connected with a piston rod (15) in a sliding way; one end of each of the two piston rods (15) is provided with a spring (16); one end of the spring (16) is fixedly connected with the piston rod (15); the other end of the spring (16) is fixedly connected with the side surface of the connecting cylinder (14); the other ends of the two piston rods (15) are provided with driving pieces; the driving device positioned on the top surface of the pump body (1) and the driving device positioned on the bottom surface of the pump body are symmetrically arranged around the pump body.

3. A bi-directional fluid pump as recited in claim 2, wherein: the drive member comprises a rectangular housing (17); two side surfaces of the rectangular shell (17) are fixedly connected with the two piston rods (15) respectively; a cam (18) is arranged in the rectangular shell (17); a transmission shaft (19) is fixedly connected to the top surface of the cam (18); the transmission shaft (19) is in transmission connection with a motor (20); the motor (20) is fixedly connected to the side surface of the inner cavity of the driving shell (12).

4. A bi-directional fluid pump as recited in claim 1, wherein: two side surfaces of the pump body (1) close to the two auxiliary plates (4) are respectively provided with a vent hole; a filter layer (21) is fixedly connected in the vent hole; and a first one-way valve (22) and a second one-way valve (23) are fixedly connected in the water inlet and the water outlet.

5. A bi-directional fluid pump as recited in claim 1, wherein: sealing grooves are respectively formed in the outer walls of the orifices of the first movable hole (2) and the second movable hole (3); and a sealing gasket (24) is fixedly connected in the sealing groove.

6. A bi-directional fluid pump as recited in claim 1, wherein: two opposite end surfaces of the first connecting plate (5) and the second connecting plate (8) are in sliding connection with the other two opposite side surfaces of the inner cavity of the pump body (1); the bottom surface of the first connecting plate (5) is in sliding connection with the bottom surface of the inner cavity of the pump body (1); the second connecting plate (8) is in sliding connection with the top surface of the inner cavity of the pump body (1).