Peristaltic pump capable of avoiding hose bending

Abstract

The invention discloses a peristaltic pump capable of avoiding hose bending. The pump comprises a hose, a base, a motor, a synchronous belt, a first synchronous wheel and a second synchronous wheel. The motor is arranged on the base, the first synchronous wheel is arranged on an output shaft of the motor, the second synchronous wheel is arranged on the base, the synchronous belt is arranged on thefirst synchronous wheel and the second synchronous wheel, a hose is arranged on the base in a straight-line manner and located below the synchronous belt, multiple rollers are arranged on the synchronous belt at intervals, when the rollers run along with the synchronous belt, at least one roller is pressed on the hose to roll forwards, through the above manner, according to the peristaltic pump capable of avoiding hose bending, the synchronous belt carries out roller driving, the interval between the two rollers is effectively increased, the pillow-shaped fluid size is increased, the contactfrequency between the rollers and a hose is reduced, the service life of the hose is prolonged, the hose does not need to be bent and arranged, the damage during contact with the rollers is small, anddurability is good.

Description

technical field [0001] The invention relates to the technical field of peristaltic pumps, in particular to a peristaltic pump that avoids bending of hoses. Background technique [0002] In the prior art, peristaltic pumps usually use two adjacent rollers on the rotor to form a "pillow"-shaped fluid on the pump tube. The volume of the "pillow" depends on the inner diameter of the pump tubing and the geometry of the rotor. [0003] In order to increase the volume of the "pillow", peristaltic pumps usually bend the hose, and use the concave surface of the limit block to limit the hose, and then increase the distance between two adjacent rollers as much as possible, but due to the geometry of the rotor Due to the limitation of characteristics, the volume of the "pillow" is usually small, which can only be compensated by the speed of rotation, sacrificing the life of the hose. [0004] In addition, the hoses of peristaltic pumps usually use silicone tubes. Although they have go...

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Problems solved by technology

[0003] In order to increase the volume of the "pillow", peristaltic pumps usually bend the hose, and use the concave surface of the limit block to limit the hose, and then increase the distance between two adjacent rollers as much as possible, but due to the geometry of the rotor Characteristic limitations, the volume of the "pillow" is usually small, which can only be compensated by the speed of rotation, sacrificing the life of the hose

[0004] In addition, the hoses of peristaltic pumps usually use silicone tubes. Although they have good wear resistance and toughness and can adapt to the friction and rolling of the rotor, they are still vulnerable parts and need to be replaced and maintained frequently. The damage is further deepened during rolling, and the life is further shortened, so improvement is required

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