CN117605657A

CN117605657A - Liquid conveying device

Info

Publication number: CN117605657A
Application number: CN202311719079.9A
Authority: CN
Inventors: 肖立峰; 陈洪伟
Original assignee: Chutianyuanchuang Biotechnology Changsha Co ltd
Current assignee: Chutianyuanchuang Biotechnology Changsha Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-02-27

Abstract

The invention discloses a liquid conveying device, which comprises a main body, and a liquid inlet flow channel and a liquid outlet flow channel which are arranged on the main body, wherein the liquid inlet flow channel and the liquid outlet flow channel are communicated with a membrane cavity through a first one-way valve, one side of the membrane cavity is provided with a membrane and a driving mechanism for enabling the membrane to act to change the volume of the membrane cavity, the driving mechanism comprises a push-pull rod and a driving assembly for driving the push-pull rod to reciprocate, one end of the push-pull rod is provided with a connector, the middle part of the connector is provided with a connecting part connected with the membrane, the periphery of the connector at the connecting part is provided with a membrane pushing part, one surface of the membrane pushing part facing the membrane is an annular cambered surface with a concave middle part, an oil cavity is arranged between the membrane and the push-pull rod, and the oil cavity is connected with an oil supplementing mechanism. The liquid conveying device has the advantages of simple structure, reduced damage to the membrane, capability of improving the service life of the membrane, and the like.

Description

Liquid conveying device

Technical Field

The invention relates to the technical field of liquid conveying equipment, in particular to a liquid conveying device.

Background

The existing infusion device comprises a confluence plate, a diaphragm and a driving mechanism, wherein the confluence plate is provided with a liquid inlet flow channel, a liquid outlet flow channel, an inlet communicated with the liquid inlet flow channel and an outlet communicated with the liquid outlet flow channel, the liquid inlet flow channel and the liquid outlet flow channel are respectively communicated with at least two diaphragm cavities through one-way valves, the diaphragm is respectively arranged on one side of each diaphragm cavity, and the driving mechanism is used for enabling the diaphragm to act to change the volume of each diaphragm cavity. The existing infusion pump device has the following defects: 1) The driving mechanism is abutted with the plane of the diaphragm in the process of pushing the diaphragm, so that the diaphragm is easy to damage, and the service life of the diaphragm is low; 2) The part of the diaphragm connected with the driving mechanism is mainly stressed, the whole stress is uneven, the diaphragm is easy to damage, and the service life is not high.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the liquid conveying device which has a simple structure, reduces the damage to the diaphragm and can improve the service life of the diaphragm.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a liquid conveyor, includes the main part and locates feed liquor runner and play liquid runner in the main part, feed liquor runner and play liquid runner communicate through first check valve and have the membrane chamber, one side in membrane chamber is equipped with the diaphragm and is used for making the diaphragm action change the actuating mechanism of membrane chamber volume, actuating mechanism includes push-and-pull rod and is used for driving push-and-pull rod reciprocating motion's actuating assembly, the one end of push-and-pull rod is equipped with the connector, the middle part of connector is equipped with the connecting portion of being connected with the diaphragm, the connector is equipped with in the periphery of connecting portion pushes away membrane portion, the one side that pushes away membrane portion towards the diaphragm is the sunken annular cambered surface in middle part, the main part is equipped with the oil pocket between diaphragm and push-and-pull rod, the oil pocket is connected with the oil supplementing mechanism.

As a further improvement of the above technical scheme:

the connector is detachably connected with the push-pull rod.

The push-pull rod is in sliding fit with the main body.

The driving assembly comprises a pressing disc and a rotary driving device, wherein the pressing disc is pressed on each push-pull rod, and the rotary driving device is arranged on the main body and used for driving the pressing disc to swing around the center in a fluctuating manner.

An adapting surface which can be adapted to the annular cambered surface is arranged on one surface of the membrane cavity corresponding to the annular cambered surface.

The oil supplementing mechanism comprises an oil storage cavity and a second one-way valve, and the oil cavity is connected with the oil storage cavity through the second one-way valve.

The second one-way valve comprises a valve cavity which is arranged in the main body and is communicated with the oil cavity, a valve core and an elastic piece, wherein the valve core and the elastic piece are arranged in the valve cavity, a valve body is arranged on one side of the valve cavity, a valve port which is communicated with the oil storage cavity is arranged on the valve body, and the elastic piece is arranged between the valve core and the main body and is used for enabling the valve core to be plugged at the valve port.

The valve port is a horn mouth with a small outside and a large inside, and the valve core is spherical.

The main body is provided with an oil duct, the valve cavity is communicated with the oil cavity through the oil duct, and the valve body is in threaded connection with the main body.

The oil storage chamber is arranged in the main body and is arranged above the oil cavity.

Compared with the prior art, the invention has the advantages that:

when the liquid conveying device disclosed by the invention works, the driving assembly drives the push-pull rod to reciprocate to drive the diaphragm to reciprocate, and the liquid is sucked into the diaphragm cavity from the liquid inlet channel and discharged to the liquid outlet channel by matching with the action of the first one-way valve. On one hand, the push-pull rod is abutted with the diaphragm through the annular cambered surface in the process of pushing the diaphragm to move, so that the damage to the diaphragm is reduced; on the other hand, the main part is equipped with the oil pocket between diaphragm and push-and-pull rod, during the use, is full with fluid in the oil pocket, extrudes the diaphragm through fluid, makes the whole atress of diaphragm relatively even, improves life to, in the reciprocating motion in-process of push-and-pull rod, the volume of oil pocket can keep unanimous for the diaphragm is operated under a stable environment always, further improves the life of diaphragm.

Drawings

FIG. 1 is a schematic view of the internal structure of a liquid transporting apparatus according to the present invention.

Fig. 2 is a schematic diagram showing the internal structure of the liquid transporting apparatus according to the present invention.

Fig. 3 is an enlarged view at a in fig. 2.

The reference numerals in the drawings denote:

1. a main body; 11. an oil passage; 2. a liquid inlet flow channel; 3. a liquid outlet channel; 4. a first one-way valve; 5. a membrane cavity; 51. an adaptation surface; 6. a membrane; 7. a driving mechanism; 71. a push-pull rod; 711. a connector; 712. a connection part; 713. a film pushing part; 714. an annular cambered surface; 72. a drive assembly; 721. a pressure plate; 722. rotationally driving; 8. an oil chamber; 9. an oil supplementing mechanism; 91. a valve cavity; 92. a valve core; 93. an elastic member; 94. a valve body; 95. a valve port; 96. an oil storage chamber.

Detailed Description

The invention will be described in further detail with reference to the drawings and the specific examples.

In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1 to 3 show an embodiment of a liquid delivery device according to the present invention, the liquid delivery device of the present invention includes a main body 1, and a liquid inlet channel 2 and a liquid outlet channel 3 disposed on the main body 1, wherein the liquid inlet channel 2 and the liquid outlet channel 3 are communicated with a membrane cavity 5 through a first one-way valve 4, one side of the membrane cavity 5 is provided with a membrane 6 and a driving mechanism 7 for making the membrane 6 move to change the volume of the membrane cavity 5, the driving mechanism 7 includes a push-pull rod 71 and a driving component 72 for driving the push-pull rod 71 to reciprocate, one end of the push-pull rod 71 is provided with a connector 711, a connecting portion 712 connected with the membrane 6 is disposed in the middle of the connector 711, a membrane pushing portion 713 is disposed on the periphery of the connecting portion 712, one side of the membrane pushing portion 713 facing the membrane 6 is an annular cambered surface 714 with a concave middle, an oil cavity 8 is disposed between the membrane 6 and the push-pull rod 71, and the oil cavity 8 is connected with an oil supplementing mechanism 9.

When the device works, the driving component 72 drives the push-pull rod 71 to reciprocate, drives the diaphragm 6 to reciprocate, and cooperates with the first one-way valve 4 to enable liquid to be sucked into the diaphragm cavity 5 from the liquid inlet flow channel 2 and discharged to the liquid outlet flow channel 3.

On the one hand, the push-pull rod 71 is abutted with the membrane 6 through the annular cambered surface 714 in the process of pushing the membrane 6 to move, so that the damage to the membrane 6 is reduced; on the other hand, the main body 1 is provided with the oil cavity 8 between the diaphragm 6 and the push-pull rod 71, when in use, oil is filled in the oil cavity 8, the diaphragm 6 is extruded by the oil, so that the whole stress of the diaphragm 6 is relatively uniform, the service life is prolonged, and in the reciprocating motion process of the push-pull rod 71, the volume of the oil cavity 8 can be kept consistent, so that the diaphragm 6 always operates in a stable environment, and the service life of the diaphragm 6 is further prolonged.

Further, in this embodiment, the push-pull rod 71 is slidably engaged with the main body 1, so that the reciprocating motion (up-down motion in this embodiment) of the push-pull rod 71 is stabilized.

Further, in the present embodiment, as shown in fig. 1, the driving assembly 72 includes a pressure plate 721 and a rotation driving member 722, the pressure plate 721 is pressed on each push-pull rod 71, and the rotation driving member 722 is provided on the main body 1 for driving the pressure plate 721 to swing around the center. The rotary drive 722 drives the pressure plate 721 to swing around the center (only swing but not rotate), and drives the diaphragm 6 to reciprocate, so that the liquid pumping and draining actions of the film cavity 5 are realized.

Further, in this embodiment, the surface of the film cavity 5 corresponding to the annular cambered surface 714 is provided with an adapting surface 51 capable of adapting to the annular cambered surface 714. Thus, when the diaphragm 6 is pushed by the annular cambered surface 714 to be abutted against the adapting surface 51, the extruding damage degree of the diaphragm 6 can be reduced due to the adapting of the adapting surface 51 and the annular cambered surface 714, and the service life of the diaphragm 6 is prolonged.

Further, in the present embodiment, as shown in fig. 2, the oil replenishing mechanism 9 includes an oil storage chamber 96 and a second check valve, and the oil chamber 8 is connected to the oil storage chamber 96 through the second check valve. The oil supplementing mechanism 9 can supplement oil for the oil cavity 8, and the oil cavity 8 is maintained to be full of oil. The second check valve enables oil in the oil reservoir chamber 96 to flow to the oil chamber 8, preventing oil in the oil chamber 8 from flowing to the oil reservoir chamber 96.

Further, in this embodiment, as shown in fig. 3, the second check valve includes a valve cavity 91 disposed in the main body 1 and communicating with the oil cavity 8, a valve core 92 disposed in the valve cavity 91, and an elastic member 93, wherein a valve body 94 is disposed on one side of the valve cavity 91, a valve port 95 communicating with an oil storage chamber 96 is disposed on the valve body 94, and the elastic member 93 is disposed between the valve core 92 and the main body 1, so that the valve core 92 is plugged in the valve port 95. When oil in the oil cavity 8 is less, the oil in the oil storage chamber 96 pushes the valve core 92 to enter the valve cavity 91 through the valve port 95 against the elastic piece 93, and then flows into the oil cavity 8; in the reverse direction, the valve core 92 is held by the elastic force of the elastic member 93 to block the valve port 95.

Further, in this embodiment, the valve port 95 is a bell mouth with a small outside and a large inside, and the valve core 92 is spherical.

Further, in this embodiment, the main body 1 is provided with the oil duct 11, the valve cavity 91 is communicated with the oil cavity 8 through the oil duct 11, and the valve body 94 is in threaded connection with the main body 1, so that replacement is facilitated.

Further, in the present embodiment, the oil reservoir chamber 96 is provided in the main body 1 and above the oil chamber 8. The annular cambered surface 714 is hollow and annular and has an arc-shaped cross section.

While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a liquid conveyor, includes main part (1) and locates feed liquor runner (2) and play liquid runner (3) on main part (1), feed liquor runner (2) and liquid runner (3) are through first check valve (4) intercommunication have membrane chamber (5), one side of membrane chamber (5) is equipped with diaphragm (6) and is used for making diaphragm (6) action change actuating mechanism (7) of membrane chamber (5) volume, its characterized in that: the driving mechanism (7) comprises a push-pull rod (71) and a driving assembly (72) for driving the push-pull rod (71) to reciprocate, one end of the push-pull rod (71) is provided with a connector (711), the middle part of the connector (711) is provided with a connecting part (712) connected with a diaphragm (6), the periphery of the connector (711) at the connecting part (712) is provided with a film pushing part (713), one surface of the film pushing part (713) facing the diaphragm (6) is an annular cambered surface (714) with a concave middle part, an oil cavity (8) is arranged between the diaphragm (6) and the push-pull rod (71) by the main body (1), and the oil cavity (8) is connected with an oil supplementing mechanism (9).

2. The liquid delivery device according to claim 1, wherein: the connector (711) is detachably connected with the push-pull rod (71).

3. The liquid delivery device according to claim 1, wherein: the push-pull rod (71) is in sliding fit with the main body (1).

4. The liquid delivery device according to claim 1, wherein: the driving assembly (72) comprises a pressure plate (721) and a rotary driving unit (722), the pressure plate (721) is pressed on each push-pull rod (71), and the rotary driving unit (722) is arranged on the main body (1) and used for driving the pressure plate (721) to swing around the center in a fluctuating mode.

5. The liquid delivery device according to claim 1, wherein: an adapting surface (51) which can be adapted to the annular cambered surface (714) is arranged on one surface of the film cavity (5) corresponding to the annular cambered surface (714).

6. The liquid delivery device according to any one of claims 1 to 5, wherein: the oil supplementing mechanism (9) comprises an oil storage cavity (96) and a second one-way valve, and the oil cavity (8) is connected with the oil storage cavity (96) through the second one-way valve.

7. The liquid delivery device according to claim 6, wherein: the second one-way valve comprises a valve cavity (91) which is arranged in the main body (1) and is communicated with the oil cavity (8), a valve core (92) and an elastic piece (93), wherein the valve core (92) and the elastic piece (93) are arranged in the valve cavity (91), a valve body (94) is arranged on one side of the valve cavity (91), a valve port (95) which is communicated with the oil storage cavity (96) is arranged on the valve body (94), and the elastic piece (93) is arranged between the valve core (92) and the main body (1) and is used for enabling the valve core (92) to be blocked at the valve port (95).

8. The liquid delivery device according to claim 7, wherein: the valve port (95) is a horn mouth with a small outside and a large inside, and the valve core (92) is spherical.

9. The liquid delivery device according to claim 6, wherein: the valve is characterized in that an oil duct (11) is arranged on the main body (1), the valve cavity (91) is communicated with the oil cavity (8) through the oil duct (11), and the valve body (94) is in threaded connection with the main body (1).

10. The liquid delivery device according to claim 6, wherein: the oil storage chamber (96) is arranged in the main body (1) and is arranged above the oil cavity (8).