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CN-122014576-A - Integrated peristaltic pump with built-in sensor

CN122014576ACN 122014576 ACN122014576 ACN 122014576ACN-122014576-A

Abstract

The invention is suitable for the technical field of peristaltic pumps, and provides an integrated peristaltic pump with a built-in sensor, which comprises a pump body, a water inlet connector and a water outlet connector, wherein the water inlet connector and the water outlet connector are arranged on the pump body, a liquid detection device is integrated on the water inlet connector or the water outlet connector, the liquid detection device comprises a shell made of light-transmitting materials and a detection element, a containing cavity and a liquid inlet channel are arranged in the shell, the containing cavity and the liquid inlet channel are arranged in a separated mode, and a reflecting surface is arranged between the containing cavity and the liquid inlet channel. According to the invention, the liquid detection device is integrated at the water inlet connector or the water outlet connector, and the existence of liquid in the liquid inlet channel can be accurately detected in real time by utilizing the total reflection principle, so that the detection mode has high response speed, can timely feed back the liquid flowing state, is beneficial to timely finding out abnormal conditions such as liquid flow interruption, leakage and the like possibly occurring in the working process of the peristaltic pump, and ensures the stable operation of the system.

Inventors

  • XIE WENKAI
  • WU BINGYONG

Assignees

  • 凌众流体科技(苏州)有限公司

Dates

Publication Date
20260512
Application Date
20260318

Claims (10)

  1. 1. The integrated peristaltic pump with the built-in sensor is characterized by comprising a pump body (1), a water inlet connector (2) and a water outlet connector (3) which are arranged on the pump body (1), wherein the water inlet connector (2) and the water outlet connector (3) are distributed at intervals, the water inlet connector (2) is communicated with a water inlet port of the pump body (1), and the water outlet connector (3) is communicated with a water outlet port of the pump body (1), and the peristaltic pump is characterized in that a liquid detection device (4) is integrated on the water inlet connector (2) or the water outlet connector (3); the liquid detection device (4) comprises a shell (5) and a detection element which are made of light-transmitting materials, and further comprises a containing cavity (101) and a liquid inlet channel (102) which are arranged in the shell (5), wherein the containing cavity (101) and the liquid inlet channel (102) are arranged in a separated mode, and a reflecting surface (103) is arranged between the containing cavity and the liquid inlet channel; The detection element is arranged in the accommodating cavity (101), and comprises a light emitter (104) and a light receiver (105), wherein the light emitter (104) is used for emitting incident light rays to the reflecting surface (103), the incident angle of the light emitter (104) is larger than a critical angle, the light receiver (105) is positioned on the reflecting light rays corresponding to the incident light rays and is used for generating signals after receiving the light rays, and the existence of liquid in the liquid inlet channel (102) is detected through the total reflection principle generated at the reflecting surface (103).
  2. 2. The integrated peristaltic pump with built-in sensor according to claim 1, characterized in that the reflecting surface (103) is a part of the inner wall of the housing (5) and protrudes towards the receiving cavity (101), when no liquid is present in the liquid inlet channel (102), the incident light is totally reflected at the reflecting surface (103) and received by the light receiver (105), when liquid is present in the liquid inlet channel (102), the total reflection condition at the reflecting surface (103) is destroyed, and part or all of the incident light is refracted into the liquid, resulting in a change of the light signal received by the light receiver (105).
  3. 3. The integrated peristaltic pump with built-in sensor of claim 2 wherein the sensing element is an infrared diode integrated with light emitting and light receiving functions.
  4. 4. A sensor-in-all peristaltic pump as claimed in claim 3, wherein the reflecting surface is inclined with respect to the direction of the incident light.
  5. 5. The integrated peristaltic pump with the built-in sensor according to claim 1, wherein a driving mechanism and a hose (6) are arranged in an inner cavity at the upper end of the pump body (1), the driving mechanism is matched with the inner wall of the pump body (1) to continuously extrude the hose (6), the driving mechanism comprises a plurality of pressure rods (7) rotatably arranged in the pump body (1), the pressure rods (7) are distributed in a circumferential array, the hose (6) is arranged outside the pressure rods (7) and matched with the inner wall of the pump body (1) to extrude the hose (6), a central shaft (8) is rotatably arranged in the pump body (1), a central wheel (9) is fixedly arranged at the upper end of the central shaft (8), driven wheels (10) are fixedly arranged at the lower ends of the pressure rods (7), and the central wheel (9) is meshed with the driven wheels (10).
  6. 6. The integrated peristaltic pump with built-in sensor according to claim 5, wherein the lower end of the inner part of the pump body (1) is provided with a cavity (11), the lower end of the central shaft (8) extends into the cavity (11), and the driving mechanism further comprises a power component for driving the central shaft (8) to rotate, and the power component is positioned in the cavity (11).
  7. 7. The integrated peristaltic pump with a built-in sensor according to claim 6, wherein the power assembly comprises a servo motor (12) fixedly installed on a pump body (1), a spline housing (13) is fixedly installed at the output shaft end of the servo motor (12), a spline shaft (14) is connected to the spline housing (13) through a spline, a gear (15) is fixedly installed at the upper end of the spline shaft (14), the lower end of the central shaft (8) is arranged in an outward expansion mode, a gear ring (16) is fixedly installed on the inner side of the lower end of the central shaft (8), the gear ring (16) is meshed with the gear (15), a connecting sheet (17) is rotatably installed on the spline shaft (14), an electric telescopic rod (18) is fixedly installed in the cavity (11), and the output end of the electric telescopic rod (18) is fixedly connected with the connecting sheet (17).
  8. 8. The integrated peristaltic pump with the built-in sensor of claim 7 wherein a heat dissipation channel (19) is formed in the central shaft (8), the heat dissipation channel (19) penetrates through the central shaft (8), a plurality of through holes (20) are formed in the gear (15), a plurality of axial flow blades (21) distributed in a circumferential array are fixedly mounted on the spline shaft (14), the axial flow blades (21) are located below the gear (15), an air inlet groove (22) is fixedly mounted at the lower end of the pump body (1), the cavity (11) is communicated with the outside through the air inlet groove (22), an air permeable container (23) is fixedly mounted in the air inlet groove (22), and a filter layer (24) is filled in the air permeable container (23).
  9. 9. The integrated peristaltic pump with built-in sensor according to claim 8, characterized in that the breathable container (23) is also filled with a water-absorbing medium (25) located laterally to the filtering layer (24).
  10. 10. The integrated peristaltic pump with built-in sensor according to claim 9, wherein the central shaft (8) is provided with an annular cavity (26), the contact surfaces of the central shaft (8) and the central wheel (9) are provided with a plurality of evenly distributed liquid-permeable holes (27), the liquid-permeable holes (27) penetrate through the central wheel (9), the liquid-permeable holes (27) are communicated with the upper end of the annular cavity (26), an annular liquid reservoir (28) is arranged in the cavity (11), the liquid reservoir (28) is fixed on the pump body (1), the liquid reservoir (28) and the central shaft (8) are provided with communication ports (29), and the liquid reservoir (28) is communicated with the annular cavity (26) through the communication ports (29); The internal sliding type liquid storage device is characterized in that a pressurizing plug (30) is arranged in the liquid storage device (28) in a sliding mode, a screw rod (31) penetrates through the pressurizing plug (30) and is connected with threads, the screw rod (31) is rotatably arranged on the pump body (1), a linkage shaft (32) is rotatably arranged in the cavity (11), two meshed bevel gears (33) are arranged at the opposite ends of the linkage shaft (32) and the screw rod (31), and transmission is carried out between the linkage shaft (32) and the central shaft (8) through a belt pulley assembly (34).

Description

Integrated peristaltic pump with built-in sensor Technical Field The invention belongs to the technical field of peristaltic pumps, and particularly relates to an integrated peristaltic pump with a built-in sensor. Background In many industrial and scientific fields, the integrated peristaltic pump is widely applied to precise liquid delivery, for example, in the scenes of cell culture liquid delivery in the biomedical industry, chemical reagent addition in the chemical industry, raw material allocation in the food industry and the like, and plays a key role by virtue of the advantages of high delivery precision, small liquid pollution and the like. However, in the use process of the existing peristaltic pump, a problem to be solved is that the flow state of the liquid in the working process of the pump body is difficult to detect accurately in real time. Conventional detection methods often rely on external complex detection equipment, such as additional installation of flow meters, level sensors, etc. on the delivery conduit. These external devices not only add complexity and cost to the overall system, but also require additional installation space, making the device layout cumbersome. Moreover, part of external detection equipment needs to be shut down in the installation and maintenance processes, and the production efficiency is seriously affected. In addition, some methods which rely on the optical characteristics (such as color and turbidity) of the liquid for detection can greatly influence the detection effect when facing liquids with different colors and transparencies, so that the detection result is inaccurate, whether abnormal conditions such as flow break and leakage exist in the liquid cannot be judged reliably, and further stable operation of the system cannot be guaranteed. In order to solve the above problems, it is necessary to design an integrated peristaltic pump with a built-in sensor. Disclosure of Invention The invention provides an integrated peristaltic pump with a built-in sensor, which aims to solve the problems in the prior art. The invention is realized in such a way, the integrated peristaltic pump with the built-in sensor comprises a pump body, a water inlet connector and a water outlet connector which are arranged on the pump body, wherein the water inlet connector and the water outlet connector are distributed at intervals, the water inlet connector is communicated with a water inlet port of the pump body, the water outlet connector is communicated with a water outlet port of the pump body, and a liquid detection device is integrated on the water inlet connector or the water outlet connector; The liquid detection device comprises a shell made of light-transmitting materials, a detection element and a reflecting surface, wherein the shell is internally provided with a containing cavity and a liquid inlet channel; the detection element is arranged in the accommodating cavity and comprises a light emitter and a light receiver, the light emitter is used for emitting incident light rays to the reflecting surface, the incident angle of the light emitter is larger than a critical angle, the light receiver is positioned on the reflecting light rays corresponding to the incident light rays and used for generating signals after the light rays are received, and whether liquid in the liquid inlet channel exists or not is detected according to the total reflection principle occurring at the reflecting surface. Preferably, the reflecting surface is a part of the inner wall of the shell and protrudes towards the accommodating cavity, when no liquid exists in the liquid inlet channel, the incident light rays are totally reflected at the reflecting surface and received by the light receiver, when the liquid exists in the liquid inlet channel, the total reflection condition at the reflecting surface is destroyed, and part or all of the incident light rays are refracted into the liquid, so that the light signals received by the light receiver are changed. Preferably, the detection element is an infrared diode integrated with light emitting and light receiving functions. Preferably, the reflecting surface is disposed obliquely with respect to the direction of the incident light. Preferably, be provided with actuating mechanism and hose in the pump body upper end inner chamber, actuating mechanism cooperation pump body inner wall continuous extrusion hose, actuating mechanism is including rotating the internal a plurality of depression bars of installing the pump, and a plurality of the depression bars are circumference array distribution, the hose is installed outside a plurality of depression bars and a plurality of depression bars cooperation pump body inner wall extrusion hose, the center pin is installed in the pump body rotation, center pin upper end fixed mounting has the center wheel, the equal fixed mounting of depression bar lower extreme has from the driving wheel, center wheel and