Peristaltic pump structure capable of reducing friction and noise

Abstract

The utility model discloses a peristaltic pump structure for reducing friction and noise, which comprises an upper cover, a lower shell, a driving piece, a double-pipeline pump pipe and a planet carrier, one end of the lower shell is fixedly screwed with the upper cover, the driving piece is fixedly screwed with one end, far away from the upper cover, of the lower shell, a turntable is arranged on one surface, close to the lower shell, of the upper cover, and the turntable is rotatably connected with the planet carrier. A first planet wheel is arranged on the side, close to the rotary disc, of the planet carrier and rotationally arranged between the rotary disc and the planet carrier, a pressing wheel is arranged in the rotary disc and sleeved with the double-pipeline pump pipe, and a sun wheel and a second planet wheel which are meshed with each other are arranged on the face, away from the rotary disc, of the planet carrier and located on one side of the driving part. A buffering piece used for reducing friction is arranged on the side, facing the driving piece, of the second planet wheel. According to the structure, friction between the second planet wheel and the inner wall of the lower shell is reduced by arranging the buffer piece, so that the working noise of the peristaltic pump is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pump equipment, in particular to a peristaltic pump structure capable of reducing friction and noise. Background Art

[0002] A peristaltic pump is a type of pump that transfers liquid by alternately squeezing and releasing an elastic delivery hose through a rotor. The peristaltic pump mainly consists of a cover and a shell. A planetary gear is installed in the shell. The planetary gear rotates during operation, and there are grooves on the inner surface of the shell. When the planetary gear rotates, it will shake, causing friction between the planetary gear and the shell. This causes unstable transmission when the internal parts of the peristaltic pump rotate, increasing the working noise and reducing the overall performance of the product. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a peristaltic pump structure that reduces friction and noise.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A peristaltic pump structure for reducing friction and noise includes: an upper cover, a lower shell, a driving member, a dual-circuit pump tube, and a planetary carrier, one end of the lower shell is screwed and fixed to the upper cover, the driving member is screwed and fixed to the end of the lower shell away from the upper cover, a turntable is provided on a surface of the upper cover close to the lower shell, the turntable is rotatably connected to the planetary carrier, a first planetary gear is provided on a side of the planetary carrier close to the turntable, the first planetary gear is rotatably arranged between the turntable and the planetary carrier, a pressure wheel is provided in the turntable, the dual-circuit pump tube is sleeved on the pressure wheel, a sun gear and a second planetary gear that mesh with each other are provided on a side of the planetary carrier away from the turntable, the sun gear and the second planetary gear are located on one side of the driving member, and a buffer for reducing friction is provided on the side of the second planetary gear facing the driving member.

[0006] In one embodiment, the driving member is a motor, the length of the sun gear is longer than the length of the second planetary gear, the output shaft of the motor extends into the lower shell, and the sun gear is sleeved on the output shaft of the motor.

[0007] In one embodiment, the buffer member is a gasket, which is sleeved outside the sun gear, and the side of the second planetary gear facing the motor is located on the end surface of the gasket.

[0008] In one embodiment, the number of the first planetary gears and the number of the second planetary gears are at least two.

[0009] In one embodiment, the number of the pressing wheels is at least two.

[0010] In one embodiment, the outlet end of the dual-circuit pump pipe passes through the connection between the upper cover and the lower shell to the outside of the lower shell, and a clearance hole is provided at the connection between the upper cover and the lower shell, and the outlet end of the dual-circuit pump pipe passes through the clearance hole to the outside of the lower shell.

[0011] In one embodiment, the outlet end of the dual-pipeline pump tube is connected to a joint after passing through the lower shell.

[0012] In one embodiment, the planet carrier is installed in the lower shell, and a ring gear matching the first planet gear and the second planet gear is provided on the inner wall of the lower shell.

[0013] In one embodiment, a steel shaft is provided on a side of the turntable facing the first planetary gear, and the first planetary gear is sleeved on the steel shaft.

[0014] In one embodiment, a rotating shaft for mounting the second planetary gear is provided on the planetary carrier, and the second planetary gear is rotatably mounted on the planetary carrier via the rotating shaft.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] The utility model discloses a peristaltic pump structure for reducing friction and noise. A gasket is provided between the second planetary gear and the motor as a buffer. The gasket serves to offset the defect of the gear ring provided on the inner wall of the lower shell, so that the rotation of the second planetary gear is on the same plane, that is, the buffer is facing the end face of the second planetary gear, which greatly reduces the friction generated by the second planetary gear during rotation, reduces noise, eliminates the influence of jitter, makes the first planetary gear, planetary carrier, turntable and pressure wheel run more smoothly, reduces the working current, ensures the flow stability, and improves the overall performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of a peristaltic pump structure that reduces friction and noise provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of a peristaltic pump structure that reduces friction and noise provided by the utility model;

[0020] Figure 3 The utility model provides a cross-sectional structural diagram of a peristaltic pump structure that reduces friction and noise.

[0021] Description of the drawings: 10, upper cover; 20, lower shell; 21, clearance hole; 22, ring gear; 30, dual-line pump pipe; 40, planetary carrier; 41, rotating shaft; 50, turntable; 51, steel shaft; 52, pressure wheel; 60, first planetary gear; 70, joint; 80, sun gear; 90, second planetary gear; 100, motor; 110, gasket; 111, perforation. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0023] A peristaltic pump structure that reduces friction and noise, referring to Figure 1 and Figure 2 The invention comprises an upper cover 10, a lower shell 20, a drive member, a dual-circuit pump tube 30, and a planetary carrier 40. The upper cover 10 and the lower shell 20 are fixed at one end by screws. The drive member is located at the end of the lower shell 20 away from the upper cover 10 and is screwed to the end of the lower shell 20. A turntable 50 is provided on the surface of the upper cover 10 near the lower shell 20. The planetary carrier 40 is disposed on the side of the turntable 50 away from the upper cover 10 and is rotatably connected to the turntable 50. The planetary carrier 40 is mounted within the lower shell 20 and is rotatably connected to the turntable 50. A first planetary gear 60 is provided on the side of the planetary carrier 40 near the turntable 50. A steel shaft 51 is provided on the side of the turntable 50 facing the first planetary gear 60. The first planetary gear 60 is sleeved on the steel shaft 51 of the turntable 50 so that the first planetary gear 60 can be rotatably disposed between the turntable 50 and the planetary carrier 40. In this embodiment, there are at least two first planetary gears 60.

[0024] Reference Figure 1 and Figure 2 The turntable 50 is arranged in an I-shape, and a pressure roller 52 is disposed within the turntable 50. The dual-circuit pump tube 30 is sleeved on the surface of the pressure roller 52 of the turntable 50, and the outlet end of the dual-circuit pump tube 30 passes through the connection between the upper cover 10 and the lower shell 20 and exits the lower shell 20. In this embodiment, the number of pressure rollers 52 is at least two.

[0025] Further, refer to Figure 1 A clearance hole 21 is opened at the connection between the upper cover 10 and the lower shell 20 relative to the outlet end of the dual-circuit pump tube 30, and the outlet end of the dual-circuit pump tube 30 passes through the clearance hole 21 to exit the lower shell 20.

[0026] Further, refer to Figure 1 The outlet end of the dual-circuit pump tube 30 passes through the lower shell 20 and is connected to a connector 70, which is used to connect to the outside world.

[0027] Reference Figure 2 and Figure 3The planet carrier 40 is provided with a sun gear 80 and a second planet gear 90 meshing with each other on a side away from the rotating disk 50. The planet carrier 40 is provided with a rotating shaft 41 for the second planet gear 90 to be mounted on. The second planet gear 90 is rotatably mounted on the planet carrier 40 via the rotating shaft 41. In this embodiment, there are at least two second planet gears 90, and a ring gear 22 is provided on the inner wall of the lower housing 20 to match the first planet gear 60 and the second planet gear 90.

[0028] Further, refer to Figure 2 and Figure 3 The driving member is the motor 100, the length of the sun gear 80 is longer than the length of the second planetary gear 90, the end of the sun gear 80 away from the planetary carrier 40 is in contact with the motor 100, the output shaft of the motor 100 extends into the lower shell 20, and the sun gear 80 is sleeved on the output shaft of the motor 100.

[0029] Reference Figure 2 and Figure 3 Due to the presence of the ring gear 22 on the inner surface of the lower housing 20, the second planetary gear 90 will vibrate when rotating, causing friction between the second planetary gear 90 and the inner wall of the housing. This results in unstable transmission when the peristaltic pump rotates internal parts, which increases operating noise. Therefore, a buffer is provided on the side of the second planetary gear 90 facing the motor 100. In this embodiment, the buffer is a gasket 110. The gasket 110 is sleeved on the outside of the sun gear 80. The center of the gasket 110 is provided with a through hole 111 for the sun gear 80 to pass through. The diameter of the central through hole 111 of the gasket 110 is larger than the diameter of the sun gear 80 to avoid affecting the rotation of the sun gear 80. The diameter of the gasket 110 is adapted to the inner diameter of the lower shell 20 so that the outer wall of the gasket 110 abuts against the inner wall of the lower shell 20. The side of the second planetary gear 90 facing the motor 100 is located on the end face of the gasket 110. The gasket 110 serves to offset the defect of the gear ring 22 provided on the inner wall of the lower shell 20, so that the rotation of the second planetary gear 90 is on the same plane, that is, on the end face of the gasket 110 facing the second planetary gear 90, which greatly reduces the friction generated by the second planetary gear 90 during rotation, reduces noise, eliminates the influence of jitter, and makes the first planetary gear 60, planetary carrier 40, turntable 50 and pressure wheel 52 run more smoothly, reduces the working current, ensures flow stability, and improves the overall performance of the product.

[0030] Reference Figure 2 and Figure 3When the peristaltic pump is working, the motor 100 drives the sun gear 80 to rotate, the sun gear 80 drives the second planetary gear 90, the second planetary gear 90 drives the planetary carrier 40 to rotate, and the first planetary gear 60 rotates together with the planetary carrier 40. The rotation of the first planetary gear 60 drives the turntable 50 and the pressure wheel 52 to rotate, and the pressure wheel 52 rotates to squeeze the dual-pipeline pump tube 30 arranged outside the pressure wheel 52, thereby realizing the operation of the peristaltic pump. The gasket 110 plays a buffering role when the various parts of the peristaltic pump are transmitted. By reducing the friction between the second planetary gear 90 and the lower shell 20, the first planetary gear 60, the planetary carrier 40, the turntable 50 and the pressure wheel 52 can run more smoothly.

[0031] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A peristaltic pump structure that reduces friction and noise, characterized in that: include: An upper cover (10), a lower shell (20), a driving member, a dual-line pump pipe (30), and a planetary carrier (40), wherein one end of the lower shell (20) is screwed and fixed to the upper cover (10), and the driving member is screwed and fixed to one end of the lower shell (20) away from the upper cover (10), a turntable (50) is provided on a surface of the upper cover (10) close to the lower shell (20), and the turntable (50) is rotatably connected to the planetary carrier (40), and a first planetary gear (60) is provided on a side of the planetary carrier (40) close to the turntable (50), and the first planetary gear (60) is provided. The wheel (60) is rotatably arranged between the turntable (50) and the planetary carrier (40), a pressure wheel (52) is arranged in the turntable (50), and the dual-pipeline pump pipe (30) is sleeved on the pressure wheel (52). A sun wheel (80) and a second planetary wheel (90) that mesh with each other are arranged on a side of the planetary carrier (40) away from the turntable (50), the sun wheel (80) and the second planetary wheel (90) are located on one side of the driving member, and a buffer for reducing friction is arranged on the side of the second planetary wheel (90) facing the driving member.

2. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: The driving member is a motor (100), the length of the sun gear (80) is longer than the length of the second planetary gear (90), the output shaft of the motor (100) extends into the lower shell (20), and the sun gear (80) is sleeved on the output shaft of the motor (100).

3. A peristaltic pump structure for reducing friction and noise according to claim 2, characterized in that: The buffer member is a gasket (110), which is sleeved outside the sun gear (80), and a through hole (111) for the sun gear (80) to pass through is provided at the center of the gasket (110), and the outer wall of the gasket (110) abuts against the inner wall of the lower shell (20), and the side of the second planetary gear (90) facing the motor (100) is located on the end face of the gasket (110).

4. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: The number of the first planetary gears (60) and the number of the second planetary gears (90) are both at least two.

5. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: The number of the pressing wheels (52) is at least two.

6. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: The outlet end of the dual-circuit pump pipe (30) passes through the connection between the upper cover (10) and the lower shell (20) and exits the lower shell (20). A clearance hole (21) is provided at the connection between the upper cover (10) and the lower shell (20), and the outlet end of the dual-circuit pump pipe (30) passes through the clearance hole (21) and exits the lower shell (20).

7. A peristaltic pump structure for reducing friction and noise according to claim 6, characterized in that: The outlet end of the dual-channel pump tube (30) passes through the lower shell (20) and is connected to a joint (70).

8. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: The planet carrier (40) is installed in the lower shell (20), and a gear ring (22) matching the first planetary gear (60) and the second planetary gear (90) is provided on the inner wall of the lower shell (20).

9. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: A steel shaft (51) is provided on one side of the turntable (50) facing the first planetary gear (60), and the first planetary gear (60) is sleeved on the steel shaft (51).

10. A peristaltic pump structure for reducing friction and noise according to claim 1, characterized in that: The planet carrier (40) is provided with a rotating shaft (41) for the second planetary gear (90) to be sleeved thereon, and the second planetary gear (90) is rotatably arranged on the planet carrier (40) via the rotating shaft (41).

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