Squeezing peristaltic pump for continuous transfer, and fluid transfer method

A fluid transfer method, which is applied to a squeezing peristaltic pump for continuous transfer,

• the squeezing peristaltic pump for continuous transfer comprising:
• a housing;
• a transmission part;
• a pressing unit;
• a limiting plate securely connected to the housing;
• and
• a hose disposed between the pressing unit and the limiting plate;
• wherein the pressing unit is driven by the transmission part to move reciprocally to press the hose, and comprises a squeezing part and a compensating part which are sequentially arranged along an output direction of fluid in the hose;
• wherein the squeezing part comprises a fluid inlet shut-off block, a fluid discharge shut-off block, and a squeezing working block, the fluid inlet shut-off block and the limiting plate form a fluid inlet shut-off valve, the fluid discharge shut-off block and the limiting plate form a fluid discharge shut-off valve, and the compensating part comprises a compensating press block;
• wherein the transmission part comprises a fluid inlet shut-off cam, a fluid discharge shut-off cam, a working cam, and a compensating cam which are coaxially provided, a sum of a central angle of an upper-position section of the fluid inlet shut-off cam and a central angle of an upper-position section of the fluid discharge shut-off cam being 360°;
• wherein in operation, the transmission part is configured to drive the squeezing part and the compensating part to alternately squeeze the hose,
• the fluid transfer method comprising:
• when the fluid inlet shut-off valve is closed, controlling the squeezing working block to press the hose;
• when the squeezing working block stops squeezing the hose, controlling the fluid discharge shut-off valve to be closed;
• before the fluid discharge shut-off valve is completely closed, controlling the compensating part to squeeze the hose;
• and
• after the fluid discharge shut-off valve is completely closed, controlling the fluid inlet shut-off valve and the squeezing working block to be opened.

A squeezing peristaltic pump for continuous transfer, comprising:

• a housing;
• a transmission part;
• a pressing unit;
• a limiting plate securely connected to the housing;
• and
• a hose disposed between the pressing unit and the limiting plate;
• wherein the pressing unit is driven by the transmission part to move reciprocally to press the hose, and comprises a squeezing part and a compensating part which are sequentially arranged along an output direction of fluid in the hose;
• wherein the housing comprises a front mounting plate, a rear mounting plate, and two side mounting plates, the two side mounting plates being oppositely disposed, the front mounting plate and the rear mounting plate being oppositely disposed, a notch for mounting the hose being provided at each of a top end of the front mounting plate and a top end of the rear mounting plate mounted at a side of the notch away from the pressing unit;
• wherein in operation, the transmission part is configured to drive the squeezing part and the compensating part to alternately squeeze the hose.