CN209818261U

CN209818261U - Single-roller micro peristaltic pump

Info

Publication number: CN209818261U
Application number: CN201920489922.1U
Authority: CN
Inventors: 李朝朝; 袁航
Original assignee: Baoding Longer Precision Pump Co Ltd
Current assignee: Baoding Longer Precision Pump Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2019-12-20
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses a single-roller micro peristaltic pump, which comprises a motor and a pump shell, wherein the front end of the motor is arranged in a motor cover, and the motor cover are fixed by a first screw; the rotating shaft end of the motor penetrates through the motor cover and is sleeved with the elliptical wheel; the tail end of a rotating shaft of the motor is supported on the pump shell through a bearing, and the pump shell and the motor cover are fixed through a second screw. The during operation motor leans on the flat transmission elliptical wheel of pivot, the elliptical wheel leans on major axis two summits extrusion hose, can beat liquid in succession, realize the material transmission function of ordinary peristaltic pump, its whole size design is 14mm 37mm, small, simple structure is compact, the gyro wheel is the elliptical wheel, the pump case cornerite is greater than 270, can guarantee at least a bit gyro wheel and hose be extrusion state at the during operation, the cutout problem of general single roller pump can not appear, and the constitution is simple, the part is small in quantity, therefore, the carrier wave prepaid electric energy meter is low in cost, and is favorable to being generalized to use.

Description

Single-roller micro peristaltic pump

Technical Field

The utility model relates to a peristaltic pump technical field specifically is a miniature peristaltic pump of single gyro wheel.

Background

Aiming at the production and use requirements, some customers need peristaltic pumps which are small in size, low in flow and capable of continuously conveying due to space limitation and use requirements. At present, peristaltic pumps with small sizes in the market have few pump heads, or have small sizes but are easy to break off at low rotating speed, so that the peristaltic pumps cannot meet the requirements of customers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniature peristaltic pump of single gyro wheel, compact structure, the size is little, simple structure, and part is small in quantity, low cost, and control is simple, and low-speed micro flow operation does not have the cutout phenomenon to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a single-roller micro peristaltic pump comprises a motor and a pump shell, wherein the front end of the motor is installed in a motor cover, and the motor cover are fixed through a first screw; the rotating shaft end of the motor penetrates through the motor cover and is sleeved with the elliptical wheel; the tail end of a rotating shaft of the motor is supported on the pump shell through a bearing, and the pump shell and the motor cover are fixed through a second screw.

Preferably, the whole circular wall of the pump shell except the outlet is a working circle, and the wrap angle is larger than 270 degrees.

Preferably, two end points of the long shaft of the elliptical wheel are in contact connection with the hose to be squeezed.

Preferably, the motor is a 3V micro direct current motor or a micro stepping motor.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the single-roller micro peristaltic pump is small in size, small in occupied space and small in size and light in weight.

2. According to the single-roller micro peristaltic pump, the roller is sleeved on the motor shaft through the elliptical wheel, direct transmission is achieved, efficiency is high, and mechanical loss is small.

3. The single-roller micro peristaltic pump is simple in composition, compact in structure, small in part number and free of cutoff.

Drawings

Fig. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the overall layout of the present invention;

fig. 3 is a schematic view of the working circle of the roller and the housing of the present invention.

In the figure: 1 second screw, 2 bearings, 3 elliptical wheels, 4 pump shells, 5 first screws, 6 motor covers and 7 motors.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a single-roller micro peristaltic pump comprises a motor 7 and a pump housing 4, wherein the front end of the motor 7 is installed in a motor housing 6, and the motor 7 and the motor housing 6 are fixed by a first screw 5; the rotating shaft end of the motor 7 penetrates through the motor cover 6 and is sleeved with the elliptical wheel 3; the tail end of a rotating shaft of the motor 7 is supported on the pump shell 4 through the bearing 2, and the pump shell 4 and the motor cover 6 are fixed through the second screw 1.

In this embodiment, the entire circular wall of the pump case 4 except the outlet is a working circle, and the wrap angle is larger than 270 °.

In this embodiment, the two end points of the major axis of the elliptical wheel 3 are in contact connection with the hose to be squeezed.

In this embodiment, the motor 7 is a 3V micro dc motor or a micro stepping motor, so that the procurement of finished products is low and the driving is simple.

The working principle is as follows: when the single-roller micro peristaltic pump works, the motor 7 flatly drives the elliptical wheel 3 by virtue of the rotating shaft, the elliptical wheel 3 extrudes the hose by virtue of two vertexes of the long shaft, so that liquid can be continuously pumped, and the material transmission function of a common peristaltic pump is realized; the structure not only has the tiny volume of the single roller pump, but also can avoid the problems of low-speed running and cutoff during low-flow output of the common single roller pump because two vertexes of the long shaft of the elliptical wheel 3 are always provided with a little extrusion hose; moreover, the peristaltic pump hose can adapt to thin-walled tubes of various specifications to obtain different flow rates, the motor 7 can use a 3V micro direct current motor or a micro stepping motor which is common in the market, the purchased finished product is low, and the driving is simple.

In summary, the following steps: the single-roller micro peristaltic pump has the advantages that the overall size is designed to be 14mm x 37mm, the size is small, the structure is simple and compact, the rollers are the elliptical wheels 3, the wrap angle of the pump shell 4 is larger than 270 degrees, at least one roller and the hose can be in an extrusion state during operation, the problem of flow cutoff of a common single-roller pump cannot occur, the single-roller micro peristaltic pump is simple in composition, few in parts and low in cost, and popularization and use are facilitated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A miniature peristaltic pump of single gyro wheel, includes motor (7) and pump case (4), its characterized in that: the front end of the motor (7) is arranged in the motor cover (6), and the motor (7) and the motor cover (6) are fixed by a first screw (5); the rotating shaft end of the motor (7) penetrates through the motor cover (6) and is sleeved with the elliptical wheel (3); the tail end of a rotating shaft of the motor (7) is supported on the pump shell (4) through the bearing (2), and the pump shell (4) and the motor cover (6) are fixed through the second screw (1).

2. The micro peristaltic pump of claim 1, wherein: the whole circular wall of the pump shell (4) except the outlet is a working circle, and the wrap angle is larger than 270 degrees.

3. The micro peristaltic pump of claim 1, wherein: the two end points of the long shaft of the elliptical wheel (3) are in contact connection with the hose to be extruded.

4. The micro peristaltic pump of claim 1, wherein: the motor (7) is a 3V micro direct current motor or a micro stepping motor.