Small peristaltic pump

Abstract

The utility model discloses a small peristaltic pump and relates to the technical field of peristaltic pumps. The rolling device comprises a driving piece, a shell, a rolling assembly, a pump pipe and a transmission assembly. The rolling assembly is rotationally arranged in the shell, part of the pump pipe extends into the shell and surrounds the outer side of the rolling assembly, and an inner gear ring is arranged below the rolling assembly; the transmission assembly is arranged on the inner side of the shell and connected with the inner gear ring. The driving part is arranged on the outer side of the shell, and an output shaft of the driving part extends into the shell and is connected with the inner gear ring through the transmission assembly so as to drive the rolling assembly to rotate. By the adoption of the technical scheme, the transmission structure is compact, transmission is stable, transmission efficiency is high, and the pump body is small in size.

Description

TECHNICAL FIELD

[0001] The utility model relates to peristaltic pump technical field, concretely relates to a small peristaltic pump. BACKGROUND

[0002] The peristaltic pump is composed of three parts: a driver, a pump head and a hose. The fluid is isolated in the hose, the hose can be quickly replaced, the fluid can be reversed, it can be dry running, and the maintenance cost is low.

[0003] The peristaltic pump is like squeezing a full fluid hose with fingers, and the fluid in the tube moves forward as the fingers slide forward. The peristaltic pump is also this principle, but the fingers are replaced by rollers. The fluid is pumped by alternately squeezing and releasing the elastic conveying hose of the pump. Just like squeezing the hose with two fingers, as the fingers move, negative pressure is formed in the tube, and the liquid flows. In order to achieve a larger transmission ratio, the transmission structure of the existing peristaltic pump occupies a large space, thereby increasing the volume of the peristaltic pump. SUMMARY

[0004] The utility model discloses a small peristaltic pump, which has the advantages of compact transmission structure, stable transmission, high transmission efficiency and small pump body.

[0005] To achieve the above object, the utility model adopts the technical scheme of a small peristaltic pump, which comprises:

[0006] A driving member, a shell, a rolling assembly, a pump pipe and a transmission assembly are arranged. The rolling assembly is rotatably arranged in the shell, the pump pipe is partially inserted into the shell and surrounds the outside of the rolling assembly, and an internal gear ring is arranged below the rolling assembly. The transmission assembly is arranged on the inner side of the shell and connected with the internal gear ring.

[0007] The driving member is arranged on the outer side of the shell, the output shaft of the driving member is inserted into the shell, and the internal gear ring is connected with the transmission assembly to drive the rolling assembly to rotate.

[0008] The utility model further comprises a driving gear arranged on the output shaft of the driving member, a first gear connected with the driving gear, and a second gear connected with the first gear and the internal gear ring.

[0009] The first gear is a double-layer gear coaxially rotating, comprising a first gear ring connected with the driving gear and a second gear ring connected with the second gear, wherein the second gear ring is arranged above the first gear ring, and the number of teeth of the second gear ring is less than that of the first gear ring.

[0010] The utility model further sets up, second gear is coaxial co-rotating double layer gear, include: with First gear connects third gear ring, with Inner gear ring connects fourth gear ring, Fourth gear ring is located above Third gear ring, and The number of teeth of Fourth gear ring is less than The number of teeth of Third gear ring.

[0011] The utility model further sets up, the rolling assembly includes carousel and a plurality of gyro wheel, a plurality of pivot is provided with on the carousel with the gyro wheel, the gyro wheel is set in the pivot, and with the pivot rotation cooperation.

[0012] The utility model further sets up, the carousel includes upper roof, lower bottom plate, the upper roof with the lower bottom plate between through connecting component detachable connection, inner gear ring sets up in the bottom of lower bottom plate.

[0013] The utility model further sets up, the pivot sets up in the downside of upper roof, the lower bottom plate is provided with with pivot corresponding fixed hole.

[0014] The utility model further sets up, the shell includes shell body and cover, the cover detachable setting in on the shell, and located above the rolling assembly, with the rolling assembly is arranged in the inside of shell.

[0015] The utility model further sets up, the lower portion of cover is provided with rotary column, the mounting hole of gyro wheel on the rolling assembly corresponds, the rolling assembly is installed in the shell through the cooperation rotation of rotary column and mounting hole.

[0016] The utility model further sets up, is provided with fastener on the shell, is provided with with fastener corresponding buckle hole on the cover, realizes the detachable connection of cover with shell body through the cooperation of buckle hole and fastener.

[0017] After adopting above technical scheme, the utility model has the beneficial effects that:

[0018] 1. In the utility model, the rotation of the rolling assembly is driven by the internal gear ring below the rolling assembly, the teeth of the internal gear ring are located on the inner side and can be closely matched with the transmission assembly, the transmission assembly part can be inserted into the inner side of the internal gear ring and matched with the internal gear ring, the whole transmission system is more compact, so as to reduce the overall volume of the peristaltic pump; meanwhile, compared with the external gear, the internal gear ring occupies smaller space under the same transmission ratio, which helps to realize the miniaturization of the peristaltic pump. Moreover, the internal gear ring makes the transmission efficiency of the transmission system higher, can reduce energy loss and improve the overall efficiency of the transmission system; the internal gear ring can also make the meshing process of the transmission assembly more stable, the vibration and impact are smaller, and stable transmission can be realized. The stable operation of the peristaltic pump is ensured, so that it has stable flow and pressure. Due to the stable transmission, the noise generated by the transmission system is also smaller, and the use experience of the peristaltic pump is improved.

[0019] 2. In the utility model, the first gear is a coaxial double-layer gear, which comprises: a first gear ring connected with the driving gear and a second gear ring connected with the second gear. The driving gear can drive the first gear ring and the second gear ring to rotate around the same rotation axis at the same time, so as to transmit power to the second gear. The second gear ring is located above the first gear ring, and the number of teeth of the second gear ring is less than that of the first gear ring. The first gear transmits power to the second gear through the second gear ring, realizing the speed reduction effect from the first gear to the second gear. The speed reduction structure is ingenious and can realize the speed reduction effect in a smaller space. Meanwhile, the driving gear and the second gear are respectively connected to different gear rings on the first gear, reducing the wear and tear of the same gear ring of the first gear, avoiding the failure of the first gear due to wear and tear, and affecting the transmission effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0021] Figure 1 It is the structure schematic diagram of the utility model;

[0022] Figure 2 It is the structure explosion schematic diagram of the utility model;

[0023] Figure 3 It is the structure explosion schematic diagram of another view of the utility model;

[0024] Figure 4 It is the structure explosion schematic diagram of the transmission system of the utility model;

[0025] Figure 5 is the structure explosion schematic view of the rolling assembly.

[0026] Mark explanation: 100, driving piece; 200, shell; 210, shell body; 220, cover; 221, rotating column; 211, fastener; 222, buckle hole; 300, rolling assembly; 310, rotating disc; 320, roller; 311, upper top plate; 312, lower bottom plate; 330, upper connecting piece; 340, lower connecting piece; 350, fixing hole; 360, mounting hole; 400, pump pipe; 510, inner gear ring; 520, driving gear; 530, first gear; 540, second gear; 531, first gear ring; 532, second gear ring; 541, third gear ring; 542, fourth gear ring. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail below in combination with the drawings.

[0028] The specific embodiment is only the explanation of the utility model, and it is not the limitation of the utility model, and the person skilled in the art can make the modification without the creative contribution according to the need after reading the present specification, but as long as in the utility model patent claim range, it is protected by the patent law.

[0029] The embodiment relates to a small peristaltic pump, as shown in the figure, comprising: driving piece 100, shell 200, rolling assembly 300, pump pipe 400 and transmission assembly. Figures 1-5

[0030] Among them, the rolling assembly 300 is rotationally arranged in the shell 200, the pump pipe 400 is partially inserted into the shell 200 and surrounds the outside of the rolling assembly 300, and the lower part of the rolling assembly 300 has an inner gear ring 510; the transmission assembly is arranged on the inner side of the shell 200 and connected with the inner gear ring 510; the driving piece 100 is arranged on the outer side of the shell 200, the output shaft of the driving piece 100 is inserted into the shell 200, the inner gear ring 510 is connected with the transmission assembly to drive the rolling assembly 300 to rotate, so that the rolling assembly 300 cyclically extrudes the pump pipe 400, and the liquid in the pump pipe 400 is pumped.

[0031] ​The rotation of the rolling assembly 300 is driven by the internal gear ring 510 below the rolling assembly 300, the teeth of the internal gear ring 510 are located on the inner side, which can be closely matched with the transmission assembly, and the transmission assembly can be partially extended into the inner side of the internal gear ring 510 to match the internal gear ring 510, so that the whole transmission system is more compact, thereby reducing the overall volume of the peristaltic pump; at the same time, compared with the external gear, the internal gear ring 510 occupies less space under the same transmission ratio, which is helpful to realize the miniaturization of the peristaltic pump. Moreover, the internal gear ring 510 makes the transmission efficiency of the transmission system higher, which can reduce energy loss and improve the overall efficiency of the transmission system; the internal gear ring 510 can also make the meshing process of the transmission assembly more stable, with less vibration and impact, so that stable transmission can be realized. To ensure the stable operation of the peristaltic pump, it has stable flow and pressure. Due to the stable transmission, the noise generated by the transmission system is also smaller, which improves the use experience of the peristaltic pump.

[0032] As a preferred scheme, the transmission assembly comprises: a driving gear 520 arranged on the output shaft of the driving member 100, a first gear 530 connected with the driving gear 520, and a second gear 540 connected with the first gear 530 and the internal gear ring 510. The transmission assembly realizes the transmission deceleration from the driving member 100 to the rolling assembly 300 through a multi-stage gear structure, so as to realize good transmission effect. Of course, in other embodiments, the transmission assembly can also be provided as other transmission structures to realize good transmission effect.

[0033] In the embodiment, the first gear 530 is a coaxial and co-rotating double-layer gear, which comprises a first gear ring 531 connected with the driving gear 520 and a second gear ring 532 connected with the second gear 540. The driving gear 520 can drive the first gear ring 531 and the second gear ring 532 to rotate around the same rotation axis at the same time, so as to transmit power to the second gear 540. The second gear ring 532 is located above the first gear ring 531, and the number of teeth of the second gear ring 532 is less than that of the first gear ring 531. The first gear 530 transmits power to the second gear 540 through the second gear ring 532, so as to realize the speed reduction effect of the first gear 530 to the second gear 540. The speed reduction structure is ingenious and can realize the speed reduction effect in a smaller space. At the same time, the driving gear 520 and the second gear 540 are respectively connected to different gear rings on the first gear 530, which reduces the wear of the same gear ring of the first gear 530, avoids the wear and failure of the first gear 530, and affects the transmission effect.

[0034] As a preferred scheme, the second gear 540 is arranged as a coaxial and co-rotating double-layer gear, comprising a third gear ring 541 connected with the first gear 530, and a fourth gear ring 542 connected with the inner gear ring 510, the first gear 530 can drive the third gear ring 541 and the fourth gear ring 542 to rotate around the same rotation axis at the same time, so as to transmit power to the inner gear ring 510 and drive the rolling assembly 300 to rotate. The fourth gear ring 542 is located above the third gear ring 541, further transmits power upward, so that the fourth gear ring 542 can extend into the inner side of the inner gear ring 510, better match the inner gear ring 510, and realize the rotation of the rolling assembly 300; the number of teeth of the fourth gear ring 542 is less than that of the third gear ring 541. The third gear further reduces the speed to the inner gear ring 510, so that the structure of the transmission assembly is as compact as possible, and the set speed reduction effect is achieved.

[0035] In the embodiment, the rolling assembly 300 comprises a rotating disc 310 and a plurality of rollers 320, the rotating disc 310 is provided with a plurality of rotating shafts corresponding to the rollers 320, the rollers 320 are sleeved on the rotating shafts and are in rotating fit with the rotating shafts, so as to be rotatably installed on the rotating disc 310, and good pumping effect on the liquid in the pump pipe 400 is achieved.

[0036] As a preferred scheme, the rotating disc 310 comprises an upper top plate 311 and a lower bottom plate 312; the upper top plate 311 and the lower bottom plate 312 are detachably connected through a connecting assembly, and the inner gear ring 510 is arranged at the bottom of the lower bottom plate 312. The connecting assembly comprises an upper connecting piece 330 arranged on the upper top plate 311 and a lower connecting piece 340 arranged on the lower bottom plate 312, and the upper connecting piece 330 and the lower connecting piece 340 are detachably connected through buckling, the detachable structure facilitates replacement of the pump pipe 400, and the service life of the peristaltic pump can be effectively prolonged. In the embodiment, the rotating shafts are arranged on the lower side of the upper top plate 311, and the lower bottom plate 312 is provided with fixing holes 350 corresponding to the rotating shafts, so as to fix the rotating shafts and ensure good installation effect of the rollers 320.

[0037] In the embodiment, the shell 200 comprises a shell body 210 and a cover 220, the cover 220 is detachably arranged on the shell body 210 and located above the rolling assembly 300; the rolling assembly 300 is arranged inside the shell 200. The cover 220 can be detached from the shell body 210 to maintain the internal rolling assembly 300 of the shell 200. As a preferred scheme, the lower side of the cover 220 is provided with a rotating column 221, and the rolling assembly 300 is provided with mounting holes 360 corresponding to the rotating column 221; the rolling assembly 300 is rotatably installed in the shell 200 through cooperation of the rotating column 221 and the mounting holes 360, so as to ensure smooth rotation of the rolling assembly 300.

[0038] In the embodiment, the buckle 211 is arranged on the shell body 210, the cover body 220 is provided with the buckle hole 222 corresponding to the buckle 211, and the detachable connection of the cover body 220 and the shell body 210 is realized through the cooperation of the buckle hole 222 and the buckle 211, so that the good detachable effect is achieved. Of course, in other embodiments, the cover body 220 and the shell body 210 can also be connected in other detachable structures.

[0039] The above is only used to illustrate the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model made by the ordinary skilled in the art should be covered in the claim range of the utility model, as long as the modifications or equivalent replacements do not deviate from the spirit and range of the technical scheme of the utility model.

Claims

1. A small peristaltic pump characterized by, The application relates to a rolling device, which comprises a driving element (100), a shell (200), a rolling assembly (300), a pump pipe (400) and a transmission assembly; the rolling assembly (300) is rotationally arranged in the shell (200), the pump pipe (400) partially extends into the shell (200) and surrounds the outside of the rolling assembly (300), and an inner gear ring (510) is arranged below the rolling assembly (300); the transmission assembly is arranged on the inner side of the shell (200) and is connected with the inner gear ring (510). The driving element (100) is arranged on the outer side of the shell (200), the output shaft of the driving element (100) extends into the shell (200), the inner gear ring (510) is connected with the transmission assembly so as to drive the rolling assembly (300) to rotate. The transmission assembly comprises a driving gear (520) arranged on the output shaft of the driving element (100), a first gear (530) connected with the driving gear (520), and a second gear (540) connected with the first gear (530) and the inner gear ring (510).

2. The small peristaltic pump of claim 1, wherein, The first gear (530) is a double-layer gear coaxially rotating and rotating together, which comprises a first gear ring (531) connected with the driving gear (520) and a second gear ring (532) connected with the second gear (540), the second gear ring (532) is arranged above the first gear ring (531), and the number of teeth of the second gear ring (532) is smaller than that of the first gear ring (531).

3. The small peristaltic pump of claim 2, wherein, The second gear (540) is a double-layer gear coaxially rotating and rotating together, which comprises a third gear ring (541) connected with the first gear (530) and a fourth gear ring (542) connected with the inner gear ring (510), the fourth gear ring (542) is arranged above the third gear ring (541), and the number of teeth of the fourth gear ring (542) is smaller than that of the third gear ring (541).

4. The small peristaltic pump of claim 2, wherein, The rolling assembly (300) comprises a rotating disc (310) and a plurality of rollers (320), a plurality of rotating shafts corresponding to the rollers (320) are arranged on the rotating disc (310), and the rollers (320) are sleeved on the rotating shafts and rotationally matched with the rotating shafts.

5. The small peristaltic pump of claim 1, wherein, The rotating disc (310) comprises an upper top plate (311) and a lower bottom plate (312), the upper top plate (311) and the lower bottom plate (312) are detachably connected through a connecting assembly, and the inner gear ring (510) is arranged at the bottom of the lower bottom plate (312).

6. The small peristaltic pump of claim 5, wherein, The rotating shafts are arranged on the lower side of the upper top plate (311), and the lower bottom plate (312) is provided with fixing holes (350) corresponding to the rotating shafts.

7. The small peristaltic pump of claim 6, wherein, The shell (200) comprises a shell body (210) and a cover (220), the cover (220) is detachably arranged on the shell body (210) and located above the rolling assembly (300), so that the rolling assembly (300) is arranged in the shell (200).

8. The small peristaltic pump of claim 1, wherein, ​ 9. The small peristaltic pump of claim 8, wherein, A rotating column (221) is arranged below the cover (220), and a mounting hole (360) corresponding to the rotating column (221) is arranged on the rolling assembly (300); the rolling assembly (300) is rotatably mounted in the shell (200) through cooperation of the rotating column (221) and the mounting hole (360).

10. The small peristaltic pump of claim 8, wherein, A fastener (211) is arranged on the shell body (210), and a fastener hole (222) corresponding to the fastener (211) is arranged on the cover (220); through cooperation of the fastener hole (222) and the fastener (211), detachable connection of the cover (220) and the shell body (210) is realized.

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