Peristaltic pump with rollers provided with gear rings

Abstract

The utility model relates to a peristaltic pump with idler wheels provided with gear rings, the peristaltic pump (10) used for fluid transmission comprises a pump head (11), a hose assembly (12) and a driving motor (13), the pump head (11) is formed by buckling a first shell (15) and a second shell (16), an idler wheel device (14) comprises an idler wheel support (141), a plurality of idler wheel shafts (142), a plurality of idler wheels (143) and a cover plate (144), and the idler wheel shafts (142), the idler wheels (143) and the cover plate (144) are arranged on the idler wheel support (141). The cover plate (144) is provided with a plurality of positioning columns (20) matched with the idler wheels (143) respectively, and the positioning columns (20) are arranged in annular grooves (30) formed in the ends, away from the gear ring (145), of the idler wheels (143) in a sleeved mode. According to the peristaltic pump disclosed by the utility model, the central pinion is matched with the motor for driving, and the transmission gear ring is directly arranged on the roller, so that a very simple, small and exquisite transmission mechanism is realized; and the rollers are arranged on the cover plate and are provided with the positioning columns, so that the effect of increasing the axial stability of the rotary motion of the rollers is achieved.

Description

Technical Field

[0001] The utility model relates to a peristaltic pump and a roller device of the peristaltic pump, in particular to a small peristaltic pump, in particular to a peristaltic pump with a roller and a gear ring. Background Art

[0002] Small peristaltic pumps transport fluids through roller extrusion. They have advantages such as simple and stable structure and accurate flow control, and are increasingly used in cleaning and medical applications. As modern electronic products become more sophisticated, the requirements for simplified and miniaturized structures of peristaltic pumps are also increasing.

[0003] In order to achieve a simple structure, stable performance and miniaturized size of the micro peristaltic pump, the utility model makes the following improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a peristaltic pump with a roller and a gear ring, and the disclosed technical solution is as follows:

[0005] A peristaltic pump with a roller and a gear ring, the peristaltic pump (10) for fluid transmission comprising a pump head (11), a hose assembly (12), a drive motor (13) and a roller device (14), the pump head (11) being formed by snapping together a first shell (15) and a second shell (16), the roller device (14) and the hose assembly (12) being arranged in the pump head (11), the hose assembly (12) comprising a joint (121) and a hose (122), the roller device (14) comprising a roller bracket (141) and several parts thereof arranged on the roller bracket (141) A plurality of roller shafts (142), a plurality of rollers (143) and a cover plate (144), wherein the roller shaft (142) passes through a central through hole (1431) provided on the inner diameter of the roller (143), characterized in that the roller (143) includes a gear ring (145) and a central gear (146) for transmission engagement with a motor shaft; wherein the cover plate (144) is provided with a plurality of positioning posts (20) respectively adapted to each roller (143), and the positioning posts (20) are sleeved in an annular groove provided at the end of the roller (143) away from the gear ring (145). In the technical solution, the central pinion serves as a transmission gear driven by the motor, and the transmission gear ring is directly provided on the roller, thereby realizing a very simple, compact and delicate transmission mechanism. Moreover, the positioning post provided on the roller installation further increases the axial stability of the rotational motion of the roller.

[0006] Furthermore, the positioning column (20) is configured as a circular cylindrical shape, and the central through hole of the circular cylindrical shape is adapted to the roller shaft (142). The positioning column (20) is sleeved and arranged in the end of the roller to rotate and adapt to the roller to achieve stability. At the same time, the inner hole of the circular cylindrical shape and the roller shaft also play a role in adapting and stabilizing positioning. The positioning column (20) achieves the role of stabilizing the positioning of the inner and outer central axes.

[0007] Furthermore, the end of the roller shaft (142) that is adapted to the positioning column (20) is configured as a smaller diameter end, and the smaller diameter end is configured as a first annular table surface (1421) on the roller shaft (142), and the first table surface (1421) is adapted to the end surface of the positioning column (20).

[0008] Furthermore, the roller (143) is provided with an adapting hole (1432) at the end adapted to the positioning column (20), and the diameter of the adapting hole (1432) is larger than the central through hole (1431). The caliber of the positioning column (20) is larger than the central through hole (1431), and a through hole (21) is provided in the positioning column (20) to adapt and connect with the roller shaft (142), so that the double-layer installation connection is more stable.

[0009] Furthermore, a second table surface (1433) in a circular shape is formed in the adapting hole (1432), and the second table surface (1433) is structurally fixed and flush with the first table surface (1421), that is, the second table surface (1433) and the first table surface (1421) are both adaptably connected to the end surface of the positioning column (20).

[0010] Furthermore, the cover plate (144) is provided with a limit block (30), and the limit block (30) includes a plurality of limit arc surfaces (31) adapted to each roller.

[0011] Furthermore, a connecting column (40) is provided at the center of the other end surface of the cover plate (144) away from the positioning column (20) and the limit block (30), which is used for the roller device (14) to be rotatably fixedly connected to the shaft fixing hole (151) provided on the inner end surface of the first shell (15).

[0012] Furthermore, the height of the gear ring (145) disposed on the roller (143) accounts for one quarter of the overall height of the roller.

[0013] Furthermore, the height of the gear ring (145) is equal to the height of the central gear (146).

[0014] According to the above technical scheme, the utility model has the following beneficial effects: the utility model is a peristaltic pump with a roller and a gear ring, which is driven by the cooperation of the central pinion and the motor, and the transmission gear ring is directly arranged on the roller, thereby realizing a very simple, compact and exquisite transmission mechanism; and the roller is installed on the cover plate and a positioning column is arranged to achieve the effect of increasing the axial stability of the rotational motion of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional schematic diagram of the overall structure of a peristaltic pump in the best embodiment of the utility model;

[0016] Figure 2 A bottom view schematic diagram of a peristaltic pump explosion according to the best embodiment of the utility model;

[0017] Figure 3 A schematic top view of a peristaltic pump explosion according to the best embodiment of the utility model;

[0018] Figure 4 This is an overall schematic diagram of a peristaltic pump in the best embodiment of the utility model;

[0019] Figure 5 AA cross-sectional view of the overall structure of the peristaltic pump of the best embodiment of the utility model;

[0020] Figure 6 for Figure 5 BB enlarged schematic diagram;

[0021] Figure 7 This is a schematic diagram of the installation structure of the roller and the boss in the best embodiment of the utility model;

[0022] Figure 8 This is a schematic diagram of the installation structure of the roller device in the best embodiment of the utility model;

[0023] Fig. 9 This is a schematic diagram of the overall installation structure of the roller device in the best embodiment of the utility model;

[0024] Fig.10 This is a CC cross-sectional view of the overall structure of the roller device according to the best embodiment of the utility model. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figures 1 to 10As shown, a peristaltic pump with a roller and a gear ring, the peristaltic pump 10 for fluid transmission includes a pump head 11, a hose assembly 12, a drive motor 13 and a roller device 14, the pump head 11 is formed by buckling a first shell 15 and a second shell 16, the roller device 14 and the hose assembly 12 are arranged in the pump head 11, the hose assembly 12 includes a joint 121 and a hose 122, the roller device 14 includes a roller bracket 141 and a plurality of roller shafts 142, a plurality of rollers 143 and a cover plate 144 arranged on the roller bracket 141, the roller shaft 142 passes through a central through hole 1431 arranged on the inner diameter of the roller 143, the roller 143 includes a gear ring 145 and a central gear 146 for transmission engagement with the motor shaft; wherein the cover plate 144 is provided with a plurality of positioning posts 20 respectively adapted to each roller 143, and the positioning posts 20 are sleeved in an annular groove arranged at the end of the roller 143 away from the gear ring 145. In this technical solution, the central pinion is used as the transmission gear driven by the motor, and the transmission gear ring is directly arranged on the roller, thus realizing a very simple, compact and exquisite transmission mechanism. In addition, the positioning column arrangement of the roller installation further increases the axial stability of the rotational motion of the roller.

[0027] like Figure 2 and Figure 3 As shown, the positioning column 20 is set to be annular, and the central through hole of the annular column is adapted to the roller shaft 142. The positioning column 20 is set in the end of the roller and rotates to adapt to the roller to achieve stability. At the same time, the inner hole of the annular column and the roller shaft also play the role of adapting and stabilizing positioning. The positioning column 20 realizes the role of stabilizing the positioning of the inner and outer center axes.

[0028] like Figure 8 As shown in , the end of the roller shaft 142 that matches the positioning column 20 is set as a smaller diameter end, and the smaller diameter end is set as a circular first table 1421 on the roller shaft 142, and the first table 1421 is matched with the end face of the positioning column 20.

[0029] like Figure 7 As shown in the figure, the roller 143 is provided with an adapting hole 1432 at the end adapted to the positioning column 20, and the diameter of the adapting hole 1432 is larger than the central through hole 1431. The caliber of the positioning column 20 is larger than the central through hole 1431, and the through hole 21 is provided in the positioning column 20 to be adapted and connected with the roller shaft 142, so that the double-layer installation connection is more stable. A circular second table 1433 is formed in the adapting hole 1432, and the second table 1433 is flush with the first table 1421 in the fixed structure, that is, the second table 1433 and the first table 1421 are both adapted and connected with the end surface of the positioning column 20.

[0030] like Figure 7 As shown in FIG. 1 , the cover plate 144 is provided with a limiting block 30 , and the limiting block 30 includes a plurality of limiting arc surfaces 31 adapted to each roller.

[0031] like Figure 8 As shown in FIG. 1 , a connecting column 40 is disposed at the center of the other end surface of the cover plate 144 away from the positioning column 20 and the limiting block 30 , and is used for the roller device 14 to be rotatably fixedly connected to the shaft fixing hole 151 disposed on the inner end surface of the first shell 15 .

[0032] like Figure 8 As shown in , the height of the gear ring 145 disposed on the roller 143 accounts for a quarter of the overall height of the roller. In a preferred embodiment, the height of the gear ring 145 is equal to the height of the central gear 146.

[0033] The above is one embodiment of the present utility model. In addition, it should be noted that any equivalent or simple changes made based on the structure, features and principles described in the concept of this patent are included in the protection scope of this patent.

Claims

1. A peristaltic pump with a roller and a gear ring, comprising a pump head (11), a hose assembly (12), a drive motor (13) and a roller device (14), wherein the pump head (11) is formed by buckling a first shell (15) and a second shell (16), the roller device (14) and the hose assembly (12) are arranged in the pump head (11), the hose assembly (12) comprises a joint (121) and a hose (122), the roller device (14) comprises a roller bracket (141) and a plurality of roller shafts (142) arranged on the roller bracket (141), a plurality of rollers (143) and a cover plate (144), the roller shaft (142) passes through a central through hole (1431) arranged on the inner diameter of the roller (143), characterized in that The roller (143) comprises a gear ring (145) and a central gear (146) for transmission engagement with a motor shaft; wherein the cover plate (144) is provided with a plurality of positioning posts (20) respectively adapted to each roller (143), and the positioning posts (20) are sleeved in an annular groove provided at the end of the roller (143) away from the gear ring (145).

2. A peristaltic pump with a roller and a gear ring according to claim 1, characterized in that The positioning column (20) is configured as a circular cylindrical shape, and the central through hole of the circular cylindrical shape is adapted to fit the roller shaft (142).

3. A peristaltic pump with a roller and a gear ring according to claim 2, characterized in that The end of the roller shaft (142) adapted to the positioning column (20) is set as a smaller diameter end, and the smaller diameter end is set as a first annular table surface (1421) on the roller shaft (142), and the first table surface (1421) is adapted to the end surface of the positioning column (20).

4. A peristaltic pump with a roller and a gear ring according to claim 3, characterized in that The roller (143) is provided with an adapting hole (1432) at the end portion adapted to the positioning column (20), and the diameter of the adapting hole (1432) is larger than the central through hole (1431).

5. A peristaltic pump with a roller and a gear ring according to claim 4, characterized in that A second table surface (1433) in the shape of a ring is formed in the adapting hole (1432), and the second table surface (1433) is structurally fixed and flush with the first table surface (1421), that is, the second table surface (1433) and the first table surface (1421) are both adaptably connected to the end surface of the positioning column (20).

6. A peristaltic pump with a roller and a gear ring according to claim 1, characterized in that The cover plate (144) is provided with a limit block (30), and the limit block (30) comprises a plurality of limit arc surfaces (31) adapted to each roller.

7. A peristaltic pump with a roller and a gear ring according to claim 1, characterized in that A connecting column (40) is provided at the center of the other end surface of the cover plate (144) away from the positioning column (20) and the limiting block (30), and is used for the roller device (14) to be rotatably fixedly connected to the rotating shaft fixing hole (151) provided on the inner end surface of the first shell (15).

8. The peristaltic pump with roller and gear ring according to claim 1, characterized in that The height of the gear ring (145) arranged on the roller (143) accounts for one quarter of the overall height of the roller.

9. A peristaltic pump with a roller and a gear ring according to claim 8, characterized in that The height of the gear ring (145) is equal to the height of the central gear (146).

Images