Cushionable peristaltic pump

Abstract

The utility model relates to the technical field of peristaltic pumps, and discloses a bufferable peristaltic pump which is characterized in that a motor is inserted into the bottom surface of a pump bottom shell, and a planetary gear is driven by the motor to rotate in an I-shaped groove; and the I-shaped groove drives the rolling shaft, so that the rolling shaft extrudes the hose to generate vacuum, and liquid is extracted. The springs are arranged between the steel needles in the rolling shafts and the I-shaped grooves, the steel needles are inserted from the end faces and installed on the I-shaped grooves to generate certain elastic force, the rolling shafts in the I-shaped grooves have certain buffering force, the springs are arranged at the two ends of the steel needles at the same time, the stability of the pump can be improved, and then the service life of the pump is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, and more particularly to a buffer-type peristaltic pump. Background Art

[0002] Peristaltic pumps pump fluids by squeezing and releasing a flexible tube through the rotation of rollers. A peristaltic pump creates a "pillow" of fluid through a section of pump tubing between three rotating rollers. Currently, peristaltic pumps use a motor to drive gears, which in turn rotate an I-shaped slot. The rollers on the I-shaped slot directly squeeze the flexible tube, creating a sealed vacuum environment to pump the fluid. However, existing I-shaped slots lack a cushioning force when the rollers rotate. Over time, the flexible tube deforms, weakening its resilience and reducing pump performance.

[0003] Therefore, how to improve the I-groove so that the roller has a buffering force and increase the stability of the pump has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that, in view of the defect that the motor in the prior art drives the gear to rotate and then drives the I-slot to rotate, the roller on the I-slot directly squeezes the hose to form a sealed vacuum environment to draw in the liquid, and when used for a long time, it is easy to cause the hose to deform and the rebound to weaken. A bufferable peristaltic pump is provided.

[0005] The technical solution adopted by the utility model to solve the technical problem is to construct a buffer-type peristaltic pump having:

[0006] The pump bottom shell is formed into an irregular body with a hollow structure, the middle cavity of which is provided with circular internal meshing teeth, and a through hole is provided in the center of the pump bottom shell;

[0007] A motor is provided on one side of the pump sump, wherein the shaft of the motor passes through the through hole of the pump sump and is fixed with screws;

[0008] a shaft gear, which is arranged on the shaft of the motor;

[0009] A planetary gear having a through hole at its center and being disposed entirely within the pump sump while meshing with the shaft gear and the internal meshing teeth within the pump sump cavity;

[0010] an annular cover plate, which is arranged on the pump bottom shell;

[0011] The planet carrier is disc-shaped, with a triangular baffle at one end and a spring slot at the baffle, and three cylindrical feet arranged in an equilateral triangle at the other end, the cylindrical feet being installed in the through holes of the planet gears;

[0012] a spring, one end of which is disposed in a spring slot of the triangular baffle of the planet carrier;

[0013] Semicircular baffle: It is semicircular in shape, with a spring slot provided on the top of the semicircle, which is provided at the other end of the spring;

[0014] An I-shaped slot, with steel needle holes at its upper and lower ends. The steel needle holes are elliptical, allowing the steel needle to move horizontally within a certain range in the holes. The bottom end of the I-shaped slot is set on the planetary carrier;

[0015] The roller is cylindrical with a through hole in the middle and is installed in the I-shaped slot;

[0016] A steel needle passes through the steel needle hole of the I-shaped slot and simultaneously passes through the through hole in the middle of the roller, and is arranged in the I-shaped slot together with the roller, with semicircular baffles sleeved on both the upper and lower ends;

[0017] A hose is sleeved on the roller in the I-shaped groove;

[0018] A circular cover plate is provided on the top of the I-shaped groove;

[0019] Pump upper casing, whose cover is placed on the pump bottom casing and fixed with screws;

[0020] The roller squeezes the hose to form a sealed vacuum liquid extraction environment; springs are provided at both ends of the steel needle in the roller to buffer the force on the hose and make the force more uniform, thereby increasing the stability of the pump and increasing the overall service life of the pump.

[0021] In a buffer-type peristaltic pump described in the utility model, a through hole is provided on one side of the pump bottom shell, the motor passes through the through hole and extends into the pump bottom shell, the shaft gear is arranged on the shaft of the motor; the planetary gears are mounted on the planetary carrier and are installed together in the cavity of the pump bottom shell, the steel needle passes through the roller and is arranged in the I-shaped groove together with the roller; the two ends of the steel needle are given a certain elastic force by semicircular baffles and springs, and the elastic force can make the roller and the steel needle move radially along the elliptical steel needle hole in the I-shaped groove at the same time with a small amplitude, and the hose is sleeved on the roller in the I-shaped groove; the circular cover plate is arranged on the top of the I-shaped groove to prevent the semicircular baffle and the spring from falling off, and the roller squeezes the hose to form a sealed vacuum liquid extraction environment;

[0022] Compared with the existing technology, a spring is provided between the steel needle in the roller and the I-slot. The steel needle is inserted from the end face and installed on the I-slot to generate a certain elastic force, so that the roller in the I-slot has a certain buffering force. Springs are also provided at both ends of the steel needle, which can increase the stability of the pump and thus improve the service life of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0024] Figure 1This is a three-dimensional diagram of an embodiment of a buffer-type peristaltic pump provided by the utility model;

[0025] Figure 2 This is a perspective view of another embodiment of a buffer-type peristaltic pump provided by the present utility model; DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings.

[0027] like Figure 1-Figure 2 As shown, in a first embodiment of a bufferable peristaltic pump of the present invention, a long-life peristaltic pump includes a motor 101, a shaft gear 102, a pump bottom shell 103, planetary gears 104 (104a, 104b, 104c), an annular cover plate 105, a planetary carrier 106, a spring 107 (107a, 107b, 107c, 107d, 107e, 107f), a semicircular baffle 108 (108a, 108b, 108c, 108d, 108e, 108f), a roller 109 (109a, 109b, 109c), a steel needle 110 (110a, 110b, 110c), a hose 111, an I-shaped groove 112, a circular cover plate 113, and a pump upper shell 114.

[0028] The pump bottom shell 103 is formed into an irregular body with a hollow structure, a middle cavity is provided with circular internal meshing teeth, and a through hole is provided in the center of the pump bottom shell;

[0029] A motor 101 is vertically mounted on the through hole side of the pump bottom housing 103, and the neck of the motor 101 is mounted on the pump bottom housing 103 and fixed with screws;

[0030] The rotating shaft of the motor 101 is mounted with a shaft gear 102 and extends into the pump sump 103 .

[0031] The planetary gears 104 (104a, 104b, 104c) are respectively mounted on the three cylindrical feet of the planetary carrier 106 and are installed in the pump bottom casing 103 together with the planetary carrier 106, so that the planetary gears 104 (104a, 104b, 104c) are respectively engaged with the shaft gear 102 and the pump bottom casing 103.

[0032] The annular cover plate 105 is arranged on the pump bottom shell;

[0033] The planet carrier 106 is disc-shaped, with a triangular baffle at one end having a spring slot, and three cylindrical feet arranged in an equilateral triangle at the other end. The cylindrical feet are installed in the through holes of the planet gears 104.

[0034] One end of the spring 107 (107a, 107b, 107c, 107d, 107e, 107f) is arranged in the spring groove of the triangular baffle of the planet carrier, and the other end is arranged in the spring groove of the semicircular baffle 105;

[0035] The semicircular baffle 105 is semicircular in shape, and a spring groove is provided on the top of the semicircle, which is provided at the other end of the spring 107 (107a, 107b, 107c, 107d, 107e, 107f);

[0036] The I-shaped slot 112 has a steel needle hole at its upper and lower ends. The steel needle hole is elliptical, allowing the steel needle to move horizontally within a certain range in the hole. The bottom end of the I-shaped slot 112 is set on the planet carrier 106.

[0037] The roller 109 (109a, 109b, 109c) is cylindrical with a through hole in the middle and is installed in the I-shaped slot 112;

[0038] The steel needle 110 passes through the steel needle hole of the I-shaped slot 112 and the through hole in the middle of the roller at the same time, and is arranged in the I-shaped slot 112 together with the roller 109 (109a, 109b, 109c), and the upper and lower ends thereof are both provided with semicircular baffles 108 (108a, 108b, 108c, 108d, 108e, 108f);

[0039] The hose 111 is sleeved on the roller 109 ( 109 a , 109 b , 109 c ) in the I-shaped groove 112 ;

[0040] The circular cover plate 113 is disposed on the top of the I-shaped groove 112;

[0041] The pump upper shell 114 is covered on the pump bottom shell 103 and fixed with screws;

[0042] When pumping liquid, the motor 101 rotates, and drives the shaft gear 102 through its rotating shaft, and then drives the planetary gear 104 (104a, 104b, 104c) to rotate, thereby driving the I-shaped groove 112 and the roller 109 (109a, 109b, 109c) to rotate. The roller 109 (109a, 109b, 109c) squeezes the hose 111 to form a sealed vacuum pumping environment.

[0043] When using the present technical solution, a spring 107 (107a, 107b, 107c, 107d, 107e, 107f) is provided between the steel needle 110 (110a, 110b, 110c) in the roller 109 (109a, 109b, 109c) and the I-shaped groove 112, which can generate a certain elastic force, so that the roller 109 (109a, 109b, 109c) in the I-shaped groove 112 has a certain buffering force, and springs are also provided at both ends 110 (110a, 110b, 110c) of the steel needle, which can increase the stability of the pump and thereby improve the service life of the pump.

[0044] In some embodiments, the number of rollers on the I-slot 112 can be increased or decreased to change the pump stability or the liquid flow rate.

[0045] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A bufferable peristaltic pump, characterized in that: have: The pump bottom shell is formed into a hollow structure, the middle cavity is provided with circular internal meshing teeth, and a through hole is provided in the center of the pump bottom shell; A motor is provided on one side of the pump sump, wherein the shaft of the motor passes through the through hole of the pump sump and is fixed with screws; a shaft gear, which is arranged on the shaft of the motor; A planetary gear having a through hole at its center and being disposed entirely within the pump sump while meshing with the shaft gear and the internal meshing teeth within the pump sump cavity; an annular cover plate, which is arranged on the pump bottom shell; The planet carrier is disc-shaped, with a triangular baffle at one end and a spring slot at the baffle, and three cylindrical feet arranged in an equilateral triangle at the other end, the cylindrical feet being installed in the through holes of the planet gears; a spring, one end of which is disposed in a spring slot of the triangular baffle of the planet carrier; Semicircular baffle: It is semicircular in shape, with a spring slot provided on the top of the semicircle, which is provided at the other end of the spring; An I-shaped slot, with steel needle holes at its upper and lower ends. The steel needle holes are elliptical, allowing the steel needle to move horizontally within a certain range in the holes. The bottom end of the I-shaped slot is set on the planetary carrier; The roller is cylindrical with a through hole in the middle and is installed in the I-shaped slot; A steel needle passes through the steel needle hole of the I-shaped slot and simultaneously passes through the through hole in the middle of the roller, and is arranged in the I-shaped slot together with the roller, with semicircular baffles sleeved on both the upper and lower ends; A hose is sleeved on the roller in the I-shaped groove; A circular cover plate is provided on the top of the I-shaped groove; Pump upper casing, whose cover is placed on the pump bottom casing and fixed with screws; The roller squeezes the hose to form a sealed vacuum liquid extraction environment; springs are provided at both ends of the steel needle in the roller to buffer the force on the hose and make the force more uniform, thereby increasing the stability of the pump and increasing the overall service life of the pump.

Images