CN110792582B

CN110792582B - Peristaltic pump for low-pulse scene

Info

Publication number: CN110792582B
Application number: CN201911076356.2A
Authority: CN
Inventors: 刘国裕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2022-03-18
Anticipated expiration: 2039-11-06
Also published as: CN110792582A

Abstract

The invention relates to the technical field of fluid pumps and discloses a peristaltic pump for a low-pulse scene. This a peristaltic pump for low pulse scene, when the compression roller begins to loosen the hose, through compensating arm drive compensation bag water outlet end water pressure compensate, effectively reduce pulse amplitude, secondly compare under the more condition of current compression roller quantity, actuating arm pivoted resistance is littleer, reduce the operation power consumption, also it is also shorter when the wearing and tearing of hose are long simultaneously, the life of hose has been improved, effort between compression roller and the hose is less in addition, the atress inhomogeneity of its pivot is less relatively, simultaneously, because the compensation bag of not arranging one side addding of hose, the effort between compensation arm and the compensation bag is favorable to the atress of pivot even, the life of pivot has further been improved.

Description

Peristaltic pump for low-pulse scene

Technical Field

The invention relates to the technical field of fluid pumps, in particular to a peristaltic pump for a low-pulse scene.

Background

Referring to fig. 5, the pressure rollers of the peristaltic pump stop delivering liquid at the moment of loosening, so that pulse flow is generated, and the use of the peristaltic pump is limited, in order to suppress and reduce pulsation, the number of the pressure rollers is increased by a common means, on one hand, the closed liquid volume is reduced, and the pumping flow rate of the peristaltic pump is reduced, and on the other hand, as each pressure roller and the hose need a certain pressure, the more the number of the pressure rollers is, the larger the friction force generated by rotation of the driver is, the more energy consumption is increased, and meanwhile, the number of times of compression of the hose is increased, the material fatigue is accelerated, and the service life of the hose is reduced.

Furthermore, the number of the press rollers is large, the total acting force between the press rollers and the hoses is large, the hoses are usually distributed on one side, the acting force generated on the rotating shaft of the driver is also deviated to one side, the abrasion nonuniformity of the rotating shaft is increased, and the service life of the rotating shaft is shortened.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides a technical scheme of a peristaltic pump for a low-pulse scene, which has the advantages of low pulse and high efficiency and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a peristaltic pump for low pulse scene, includes the pump body and hose, the inner wall of the pump body is equipped with the hose, the middle part of the pump body is equipped with actuating arm and compensation arm, the terminal fixed mounting of actuating arm has the compression roller, one side that the pump body was not equipped with the hose is equipped with the compensation bag, the end of intaking and the play water end intercommunication with the end of intaking and the play water end of hose respectively of compensation bag, the end of intaking and the play water end of compensation bag all are equipped with the check valve and ensure the flow direction, the compensation arm begins to extrude the reduction of the play water end water pressure of compensation bag compensation hose in the twinkling of an eye at the compression roller unclamp the hose.

Preferably, actuating arm and compensation arm are the contained angle setting, the contained angle of actuating arm and compensation arm satisfies when the extrusion force between compression roller and the hose reduces compensation arm begin to extrude the compensation bag, compensation bag size satisfies when the extrusion force between another compression roller and the hose is the biggest, stops the effect between compensation arm and the compensation bag.

Preferably, the compensation arm presses the compensation capsule through magnetic force, magnets which are in repulsion force are respectively arranged at the positions where the compensation arm and the compensation capsule are close to each other, and driving pieces are arranged on the surface of the compensation capsule.

Preferably, the water outlet ends of the hose and the compensation bag are both communicated with the buffer tank.

Preferably, one side of the compensation bag is movably provided with an adjusting bolt.

The invention has the following beneficial effects:

1. this a peristaltic pump for low pulse scene, when the compression roller begins to loosen the hose, compensate through compensation arm drive compensation bag water outlet end water pressure, do not increase effective reduction pulse amplitude under extra compression roller and the extra load condition, secondly under keeping the state that the compression roller quantity is less, confined liquid volume is great, the output of peristaltic pump is great, on the other hand, compare under the more condition of current compression roller quantity, actuating arm pivoted resistance is littleer, reduce the operation power consumption, the length is also shorter when the wearing and tearing of hose simultaneously, the life of hose has been improved.

2. This a peristaltic pump for low pulse scene, on the one hand, the effort between compression roller and the hose is less, and the atress inhomogeneity of its pivot is less relatively, simultaneously, because the compensation bag that adds is not arranging one side of hose, the effort between compensation arm and the compensation bag is favorable to the atress of pivot even, has further improved the life of pivot.

Drawings

FIG. 1 is a schematic illustration of the present invention in normal operation;

FIG. 2 is a schematic view illustrating the hydraulic pressure compensation according to the present invention;

FIG. 3 is a schematic view of the present invention after completion of water pressure compensation;

FIG. 4 is a schematic view of a surge tank of the present invention;

fig. 5 is a schematic structural view of a conventional peristaltic pump.

In the figure: 1. a pump body; 2. a hose; 3. a drive arm; 4. a compression roller; 5. a compensation arm; 6. a compensation bladder; 7. a driving plate; 8. a three-way valve; 9. a buffer tank; 10. and adjusting the bolt.

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.

Referring to fig. 1-4, a peristaltic pump for a low pulse scene includes a pump body 1 and a hose 2, the hose 2 is disposed on an inner wall of the pump body 1, a driving arm 3 and a compensation arm 5 are disposed in a middle portion of the pump body 1, a pressing roller 4 is fixedly mounted at a tail end of the driving arm 3, the driving arm 3 drives the pressing roller 4 to move to squeeze the hose 2, a compensation bag 6 is disposed on a side of the pump body 1 where the hose 2 is not disposed, a water inlet end and a water outlet end of the compensation bag 6 are respectively communicated with a water inlet end and a water outlet end of the hose 2, a check valve is disposed at both the water inlet end and the water outlet end of the compensation bag 6 to ensure a flow direction, the compensation arm 5 starts to squeeze the compensation bag 6 at the moment the hose 2 is released by the pressing roller 4 to reduce a water pressure at the water outlet end of the compensation hose 2, so as to maintain a stable liquid output pressure and reduce a pulse amplitude.

Wherein, actuating arm 3 and compensation arm 5 are the contained angle setting, and the contained angle of actuating arm 3 and compensation arm 5 satisfies compensation arm 5 and begins to extrude compensation bag 6 when the extrusion force between compression roller 4 and the hose 2 reduces, and compensation bag 6 size satisfies when the extrusion force between another compression roller 4 and the hose 2 is the biggest, stops the effect between compensation arm 5 and the compensation bag 6.

The compensation arm 5 extrudes the compensation capsule 6 through magnetic force, magnets which are represented by repulsive force are respectively arranged at the positions where the compensation arm 5 and the compensation capsule 6 are close to each other, a driving sheet 7 is arranged on the surface of the compensation capsule 6, when the compensation arm 5 is close to each other, the driving sheet 7 is driven to further extrude the compensation capsule 6, and the service life of the compensation capsule 6 is prolonged while resistance is reduced in a non-contact mode.

Wherein, the play water end of hose 2 and compensation bag 6 all communicates buffer tank 9, is full of gas in the buffer tank 9, and when pressure was too big, the extrusion is gaseous, but when pressure was little, the gas can compensate water pressure, makes compensation 6 more gentle, further eliminates the pulse, and hose 2 and compensation bag 6's the end of intaking pass through three-way valve 8 and connect.

Wherein, one side of the compensation bag 6 is movably provided with an adjusting bolt 10, and the adjusting bolt 10 is screwed in or out to extrude the compensation bag 6 to control the water quantity in the compensation bag 6 so as to finely adjust the compensation quantity of the compensation bag 6.

The working principle and the using process of the invention are as follows:

when the peristaltic pump runs, the driving arm 3 and the compensation arm 5 keep synchronous rotation, the driving arm 3 rotates to drive the pressing rollers 4 to rotate, the two pressing rollers 4 sequentially extrude the hose 2 to drive the flowing of liquid, when the pressing rollers 4 driving the flowing of the liquid can release the hose 2, the compensation arm 5 and the driving sheet 7 begin to interact, the driving sheet 7 extrudes the compensation bag 6, the liquid flows into the buffer tank 9 from the compensation bag 6 to compensate the outlet water pressure, the driving arm 3 and the compensation arm 5 continue to rotate, the extrusion action of the other pressing roller 4 and the hose 2 is maximum, the acting force between the compensation arm 5 and the driving sheet 7 disappears, and the pulse generated at the action interval of the two pressing rollers 4 is reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a peristaltic pump for low pulse scene, includes the pump body (1) and hose (2), the inner wall of the pump body (1) is equipped with hose (2), its characterized in that: the middle part of the pump body (1) is equipped with actuating arm (3) and compensation arm (5), the terminal fixed mounting of actuating arm (3) has compression roller (4), one side that the pump body (1) was not equipped with hose (2) is equipped with compensation bag (6), the end of intaking and the play water end intercommunication with the end of intaking and the play water end of hose (2) respectively of compensation bag (6), the end of intaking and the play water end of compensation bag (6) all are equipped with the check valve and ensure the flow to, compensation arm (5) begin to extrude the reduction of the play water end water pressure of compensation bag (6) compensation hose (2) in the twinkling of an eye of hose (2) is loosened in compression roller (4).

2. A peristaltic pump for low pulse scenarios as recited in claim 1, wherein: the automatic pressure compensation device is characterized in that the driving arm (3) and the compensation arm (5) are arranged at an included angle, the included angle between the driving arm (3) and the compensation arm (5) meets the requirement that the extrusion force between the compression roller (4) and the hose (2) is reduced, the compensation arm (5) starts to extrude the compensation bag (6), the size of the compensation bag (6) meets the requirement that the extrusion force between another compression roller (4) and the hose (2) is the largest, and the compensation arm (5) and the compensation bag (6) are stopped.

3. A peristaltic pump for low pulse scenarios as recited in claim 1, wherein: the compensation arm (5) extrudes the compensation capsule (6) through the action of magnetic force, magnets which are represented as repulsive force are respectively arranged at the positions where the compensation arm (5) and the compensation capsule (6) are close to each other, and a driving sheet (7) is arranged on the surface of the compensation capsule (6).

4. A peristaltic pump for low pulse scenarios as recited in claim 1, wherein: the water outlet ends of the hose (2) and the compensation bag (6) are communicated with a buffer tank (9).

5. A peristaltic pump for low pulse scenarios as recited in claim 1, wherein: one side of the compensation bag (6) is movably provided with an adjusting bolt (10).