Pump head of peristaltic pump

Abstract

The utility model discloses a pump head of a peristaltic pump, which belongs to the technical field of peristaltic pumps and comprises a fixed seat, a rotating component is arranged on the front side of the fixed seat, a driving component is arranged behind the fixed seat and connected with the rotating component, an upper pressing block is arranged on one side of the rotating component, and a lower pressing block is arranged on the other side of the rotating component. One side of the upper pressing block is connected with the fixing base, an elastic assembly is arranged above the other side of the upper pressing block, a hose is arranged between the upper pressing block and the rotating assembly, and a fixing assembly is arranged on the side, away from the upper pressing block, of the rotating assembly. The pump head of the peristaltic pump is not affected by tolerance and is high in coaxiality.

Description

Technical Field

[0001] This utility model relates to the field of peristaltic pump technology, and in particular to a peristaltic pump head. Background Technology

[0002] A peristaltic pump is a pump that delivers fluid by squeezing and releasing a flexible tubing. Its working principle involves a motor driving a roller to rotate; as the roller moves within the pump tube, it squeezes the tubing, creating a vacuum that draws in fluid, and then continues rolling to expel the fluid. Existing peristaltic pumps have the following technical problems:

[0003] (1) The coaxiality difference between the drive component and the rotating component directly affects the stability of the rotating component. If the rotating component is tilted, the hose will run along the tilted rotating component, resulting in hose running.

[0004] (2) The flow rate of the peristaltic pump is affected by the hose tolerance, resulting in different flow rates of hoses in the same batch. Summary of the Invention

[0005] The purpose of this invention is to provide a peristaltic pump head to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a peristaltic pump head, including a fixed base, a rotating component disposed on the front side of the fixed base, a driving component disposed at the rear of the fixed base, the driving component being connected to the rotating component, an upper pressure block disposed on one side of the rotating component, one side of the upper pressure block being connected to the fixed base, and an elastic component disposed above the other side, a flexible tube being disposed between the upper pressure block and the rotating component, and a fixed component disposed on the side of the rotating component away from the upper pressure block.

[0007] Preferably, the rotating assembly includes a ring frame with slots symmetrically arranged on both sides of the ring frame, a fan-shaped slider on the slot, a through hole at the center of the ring frame, and protrusions symmetrically arranged inside the through hole.

[0008] Preferably, the drive assembly includes a servo motor, the drive end of the servo motor is provided with a motor shaft, the motor shaft passes through the fixed base and is connected to the annular frame, and the motor shaft is symmetrically provided with grooves that match the protrusions.

[0009] Preferably, a bearing is provided on the motor shaft, and the bearing is connected to the fixed base.

[0010] Preferably, a fixing frame is provided above the end of the upper pressure block that is not connected to the fixing seat, and the elastic component is disposed between the fixing frame and the upper pressure block.

[0011] Preferably, the elastic component includes a spring, one side of which is connected to the fixed frame and the other side is connected to the upper pressure block. A telescopic rod is provided inside the spring, and the left and right sides of the telescopic rod are respectively connected to the fixed frame and the upper pressure block.

[0012] Preferably, the fixing component includes a limiting block, the limiting block is provided with a limiting groove, and a baffle is provided on the front side of the limiting block.

[0013] Therefore, the present invention, by adopting the above-mentioned peristaltic pump head, has the following beneficial effects:

[0014] (1) The rotating assembly is supported by a long motor shaft and bearings, with high coaxiality, which can effectively prevent the rotating assembly from sagging under force;

[0015] (2) A ring frame is provided, which limits the position of the hose by the ring frame and the upper pressure plate to prevent the hose from deviating and sagging, and at the same time reduces flow fluctuation;

[0016] (3) It is equipped with elastic components, which are not affected by hose tolerances and have strong compatibility.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of a peristaltic pump head according to the present invention;

[0019] Figure 2 This is a schematic diagram of section A of an embodiment of a peristaltic pump head according to the present invention;

[0020] Figure 3 This is a schematic diagram of the motor shaft structure of an embodiment of a peristaltic pump head according to the present invention;

[0021] Figure Labels

[0022] 1. Fixed base; 2. Flexible hose; 3. Upper pressure block; 4. Ring frame; 5. Groove; 6. Sector slider; 7. Through hole; 8. Protrusion; 9. Motor shaft; 10. Groove; 11. Fixed frame; 12. Spring; 13. Telescopic rod; 14. Limiting block; 15. Baffle. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Example

[0026] like Figure 1-3 As shown, this utility model provides a peristaltic pump head, including a fixed base 1. A rotating component is arranged on the front side of the fixed base 1, and a driving component is arranged at the rear of the fixed base 1. The driving component is connected to the rotating component to realize the rotation of the rotating component and squeeze the hose 2. An upper pressure block 3 is arranged on one side of the rotating component, and one side of the upper pressure block 3 is connected to the fixed base 1. An elastic component is arranged on the upper side of the other side. The hose 2 is arranged between the upper pressure block 3 and the rotating component. A fixing component is arranged on the side of the rotating component away from the upper pressure block 3 to fix the hose 2.

[0027] Specifically, the rotating assembly includes an annular frame 4, with a flexible hose 2 positioned between the annular frame 4 and the upper pressure block 3. The contact surfaces of the annular frame 4 and the flexible hose 2 are both arc-shaped. The annular frame 4 has symmetrically arranged slots 5 on both sides, and fan-shaped sliders 6 are mounted on the slots 5, which compress the flexible hose 2. Both the surface of the fan-shaped sliders 6 and the outer side of the flexible hose 2 are coated with a lubricating layer to improve the lifespan of the flexible hose 2. A through hole is located at the center of the annular frame 4, and protrusions symmetrically arranged within the through hole.

[0028] Specifically, the drive component includes a servo motor, and the servo motor drive end is provided with a motor shaft 9. The motor shaft 9 passes through the fixed seat 1 and is connected to the ring frame 4. The motor shaft 9 is symmetrically provided with grooves 10 that match the protrusions 8.

[0029] Specifically, a bearing is installed on the motor shaft 9, and the bearing is connected to the fixed base 1. The ring frame 4 is supported by the motor shaft 9 and the bearing, with high coaxiality to prevent the rotating components from shifting.

[0030] Specifically, a fixing frame 11 is provided above the end of the upper pressure block 3 that is not connected to the fixing base 1, and an elastic component is provided between the fixing frame 11 and the upper pressure block 3. By providing the elastic component, the peristaltic pump's accuracy is prevented from being affected by the tolerance of the hose 2.

[0031] Specifically, the elastic component includes a spring 1212, one side of which is connected to the fixed frame 11 and the other side is connected to the upper pressure block 3. A telescopic rod 13 is provided inside the spring 12, and the left and right sides of the telescopic rod 13 are connected to the fixed frame 11 and the upper pressure block 3 respectively.

[0032] Specifically, two sets of fixing components are provided to fix the inlet and outlet of the hose 2 respectively. The fixing components include a limiting block 14, which has a limiting groove 10 and a baffle 15 on its front side. The baffle 15 confines the hose 2 in the limiting groove 10, thereby fixing the hose 2.

[0033] The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in existing technology. The machinery, parts and equipment all adopt conventional models in existing technology. In addition, the circuit connection adopts conventional connection methods in existing technology, which will not be described in detail here.

[0034] Working principle: First, the hose 2 is placed between the upper pressure block 3 and the ring frame 4, and the hose 2 is fixed using the fixing component. Then, the servo motor is driven, which drives the ring frame 4 to rotate. As the fan-shaped slider 6 on the ring frame 4 moves, it squeezes the hose 2, creating a vacuum that draws in the fluid. Then, the rotation continues to expel the fluid.

[0035] Therefore, the present invention adopts a peristaltic pump head as described above, which is not affected by tolerances and has high coaxiality.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A peristaltic pump head characterized by: The device includes a fixed base, a rotating component on the front side of the fixed base, a driving component on the rear side of the fixed base, the driving component being connected to the rotating component, an upper pressure block on one side of the rotating component, one side of the upper pressure block being connected to the fixed base, an elastic component on the upper side of the other side, a flexible hose between the upper pressure block and the rotating component, and a fixed component on the side of the rotating component away from the upper pressure block.

2. A peristaltic pump head as claimed in claim 1, wherein: The rotating assembly includes a ring frame with slots symmetrically arranged on both sides of the ring frame. A fan-shaped slider is provided on the slot. A through hole is provided at the center of the ring frame, and protrusions are symmetrically arranged inside the through hole.

3. A peristaltic pump head as claimed in claim 2, wherein: The drive assembly includes a servo motor, and the drive end of the servo motor is provided with a motor shaft. The motor shaft passes through the fixed base and is connected to the ring frame. The motor shaft is symmetrically provided with grooves that match the protrusions.

4. A peristaltic pump head as claimed in claim 3, wherein: A bearing is provided on the motor shaft, and the bearing is connected to the fixed base.

5. A peristaltic pump head as claimed in claim 1, wherein: A fixing frame is provided above the end of the upper pressure block that is not connected to the fixing base, and the elastic component is disposed between the fixing frame and the upper pressure block.

6. A peristaltic pump head as claimed in claim 5, wherein: The elastic component includes a spring, one side of which is connected to the fixed frame and the other side is connected to the upper pressure block. A telescopic rod is provided inside the spring, and the left and right sides of the telescopic rod are respectively connected to the fixed frame and the upper pressure block.

7. A peristaltic pump head as claimed in claim 1, wherein: The fixing component includes a limiting block, a limiting groove is provided on the limiting block, and a baffle is provided on the front side of the limiting block.

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