Cycloid ball peristaltic pump

Abstract

The utility model relates to the technical field of peristaltic pumps, in particular to a cycloid ball peristaltic pump which comprises a housing, a roller is mounted in the housing, a first bearing is mounted on the inner wall of a cycloid inner wheel ring, the cycloid inner wheel ring is movably mounted in the housing through the arranged first bearing, a ball fixing sleeve is further arranged on the inner wall of the cycloid inner wheel ring, and the ball fixing sleeve is movably mounted in the housing. A plurality of holes are formed in the surface of the ball fixing sleeve, balls are installed at the holes, a shaft sleeve is installed on the inner wall of the ball fixing sleeve, the eccentric wheel is driven by the motor to rotate so as to extrude the balls, the swing motion of the balls can enable the cycloid inner wheel ring to rotate, and through the transmission mode, noise can be reduced; the rotation precision is improved, the cycloid inner wheel ring rotates to drive the multiple rollers to extrude the hose, so that fluid flows, pulsation of the fluid can be more uniform through extrusion of the multiple rollers, the device is small in size and can be installed in a narrow space, and the applicability of the application environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, in particular to a cycloid ball peristaltic pump. Background Art

[0002] Peristaltic pumps consist of three parts: drive, pump head and hose. The main competitive advantages of peristaltic pumps are that the fluid is isolated in the pump tube, the pump tube can be quickly replaced, the fluid is reversible, it can run dry, and the maintenance cost is low. The peristaltic pump is like squeezing a hose full of fluid with your fingers, and the fluid in the tube moves forward as the fingers slide forward. The peristaltic pump is also based on this principle, but the fingers are replaced by rollers. The fluid is pumped by alternately squeezing and releasing the elastic delivery hose of the pump. Just like squeezing a hose with two fingers, as the fingers move, negative pressure is formed in the tube, and the liquid flows.

[0003] Existing peristaltic pumps often use three rollers to squeeze the hose to transport the fluid. However, this method has a large load-bearing capacity for the motor, and the flow rate of the transported fluid is uneven, resulting in uneven pulsation of the fluid. For this reason, we propose a cycloid ball peristaltic pump. Utility Model Content

[0004] In view of the above problems, the utility model provides a cycloid ball peristaltic pump, which has the advantage of making the pulsation of the transported fluid uniform.

[0005] The technical solution of the utility model is:

[0006] A cycloid ball peristaltic pump comprises a casing, a roller is installed inside the casing, a first bearing is installed on the end face shaft of the cycloid inner rim, the cycloid inner rim is movably installed in the casing through the first bearing, a ball fixing sleeve is also provided on the inner wall of the cycloid inner rim, a plurality of holes are opened on the surface of the ball fixing sleeve, balls are installed in the holes, a shaft sleeve is installed on the inner wall of the ball fixing sleeve, a second bearing is installed on the inner wall of the shaft sleeve, an eccentric wheel is installed on the inner wall of the second bearing, a fixing plate is installed on one side of the casing, a motor is installed on one side of the fixing plate, and the eccentric wheel is fixedly installed on the output shaft of the motor.

[0007] In a further technical solution, a plurality of rollers are arranged on the outer wall of the cycloid inner rim, a movable shaft is movably connected at the middle position of the rollers, and both ends of the movable shaft are fixed on the cycloid inner rim.

[0008] In a further technical solution, the inner wall of the cycloid inner rim is provided with a plurality of wavy grooves.

[0009] In a further technical solution, three screws are provided on the outer wall of the cover shell, and the cover shell is detachably mounted on the fixing plate through the three screws.

[0010] The beneficial effects of the utility model are:

[0011] The eccentric wheel is driven by a motor to rotate so as to squeeze multiple balls. The swinging motion of the multiple balls can cause the cycloid inner wheel rim to rotate. This transmission method can reduce noise and improve the rotation accuracy. After the cycloid inner wheel rim rotates, it drives multiple rollers to squeeze the hose, thereby making the fluid flow. The squeezing of multiple rollers can make the pulsation of the fluid more uniform. The device is small in size and can be installed in a narrow space, thereby improving the applicability of the application environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0013] Description of reference numerals:

[0014] 1. Cover; 2. Screws; 3. First bearing; 4. Hose; 5. Cycloid inner rim; 6. Roller; 7. Ball fixing sleeve; 8. Ball; 9. Bushing; 10. Second bearing; 11. Eccentric wheel; 12. Fixing plate; 13. Motor. DETAILED DESCRIPTION

[0015] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0016] Example:

[0017] like Figure 1 As shown, the cycloid ball peristaltic pump comprises a housing 1, a roller 6 is installed inside the housing 1, a first bearing 3 is installed on the end face shaft of the cycloid inner wheel rim 5, the cycloid inner wheel rim 5 is movably installed in the housing 1 through the first bearing 3, a ball fixing sleeve 7 is further provided on the inner wall of the cycloid inner wheel rim 5, a plurality of holes are opened on the surface of the ball fixing sleeve 7, balls 8 are installed in the holes, a shaft sleeve 9 is installed on the inner wall of the ball fixing sleeve 7, a second bearing 10 is installed on the inner wall of the shaft sleeve 9, and a biasing sleeve 9 is installed on the inner wall of the second bearing 10 A center wheel 11, a fixing plate 12 is installed on one side of the cover 1, a motor 13 is installed on one side of the fixing plate 12, the eccentric wheel 11 is fixedly installed on the output shaft of the motor 13, a plurality of rollers 6 are arranged on the outer wall of the cycloid inner rim 5, a movable shaft is movably connected at the middle position of the roller 6, both ends of the movable shaft are fixed on the cycloid inner rim 5, a plurality of wavy grooves are opened on the inner wall of the cycloid inner rim 5, three screws 2 are arranged on the outer wall of the cover 1, and the cover 1 can be detachably installed with the fixing plate 12 through the three screws 2 arranged.

[0018] The working principle of the above technical solution is as follows:

[0019] The output shaft is driven to rotate by starting the motor 13, and the output shaft drives the eccentric wheel 11 to rotate. Since the eccentric wheel 11 is eccentrically set, it can drive the ball 8 to move on the hole under the action of the sleeve 9, and has a wavy groove on the inner wall of the cycloid inner wheel rim 5, so that the cycloid inner wheel rim 5 can rotate with high precision. After the cycloid inner wheel rim 5 rotates, the roller 6 is driven to rotate through the movable shaft. The roller 6 squeezes the hose 4 to make the internal fluid flow, thereby making the pulsation of the fluid more uniform.

[0020] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A cycloid ball peristaltic pump, comprising a housing (1) and a cycloid inner rim (5), characterized in that: A roller (6) is installed inside the housing (1); a first bearing (3) is installed on the end face shaft of the cycloid inner rim (5); the cycloid inner rim (5) is movably installed in the housing (1) through the first bearing (3); a ball fixing sleeve (7) is also provided on the inner wall of the cycloid inner rim (5); a plurality of holes are provided on the surface of the ball fixing sleeve (7); balls (8) are installed in the holes; a shaft sleeve (9) is installed on the inner wall of the ball fixing sleeve (7); a second bearing (10) is installed on the inner wall of the shaft sleeve (9); an eccentric wheel (11) is installed on the inner wall of the second bearing (10); a fixing plate (12) is installed on one side of the housing (1); a motor (13) is installed on one side of the fixing plate (12); and the eccentric wheel (11) is fixedly installed on the output shaft of the motor (13).

2. The cycloid ball peristaltic pump according to claim 1, characterized in that: The outer wall of the cycloid inner wheel rim (5) is provided with a plurality of rollers (6), and a movable shaft is movably connected at the middle position of the rollers (6), and both ends of the movable shaft are fixed on the cycloid inner wheel rim (5).

3. The cycloid ball peristaltic pump according to claim 1, characterized in that: The inner wall of the cycloid inner wheel rim (5) is provided with a plurality of wave-shaped grooves.

4. The cycloid ball peristaltic pump according to claim 1, characterized in that: The outer wall of the cover shell (1) is provided with three screws (2), and the cover shell (1) is detachably mounted with the fixing plate (12) via the three screws (2).

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