Peristaltic pump with adjustable roller assembly

Abstract

The utility model discloses a peristaltic pump with an adjustable roller assembly, which relates to the technical field of peristaltic pumps and comprises a roller support and an eccentric shaft, and two ends of the eccentric shaft are respectively mounted on the roller support. The right plate of the roller support is provided with at least two clamping positions, the right end of the eccentric shaft is provided with a clamping stopper, and the clamping stopper is embedded in one of the clamping positions; the left end of the eccentric shaft is sleeved and connected with a spring, and the other end of the spring abuts against the outer side of the left plate of the roller support. The working diameter of the roller assembly is convenient to adjust.

Description

TECHNICAL FIELD

[0001] The utility model belongs to peristaltic pump field, especially be related to a kind of adjustable type roller assembly's peristaltic pump. BACKGROUND

[0002] Peristaltic pump is a kind of special volume pump, mainly applied to the distribution or conveying of fluid, and is widely applied to pharmaceutical, food, chemical industry and other industries.Peristaltic pump head works, roller rotates, and "pillow" shaped fluid is formed between two rollers in a section of pump pipe, and fluid is pumped by alternately extruding and releasing to the elastic conveying hose of pump;The size of "pillow" volume affects the size of flow;The rotational speed of roller also affects the size of flow.

[0003] Two problems of existing roller assembly are as follows:(1) the pressing capacity of roller assembly with fixed working diameter is a certain value, and cannot be adjusted;(2) the degree of hose crushing of roller assembly with fixed working diameter cannot be adjusted. UTILITY MODEL CONTENT

[0004] The utility model aims at the defects and deficiencies of prior art, and provides a kind of adjustable type roller assembly's peristaltic pump, and the working diameter of roller assembly is conveniently adjusted.

[0005] The utility model is realized by the following technical schemes:

[0006] A kind of adjustable type roller assembly's peristaltic pump, including roller support and eccentric shaft, the both ends of eccentric shaft are installed on roller support respectively;

[0007] Right plate of roller support is equipped with at least two clamping positions, and the right end of eccentric shaft is equipped with clamping stop, and clamping stop is embedded in one of clamping positions;The left end of eccentric shaft is sleeved and connected with spring, and the other end of spring is abutted with the outside of left plate of roller support.

[0008] Further, the both ends of eccentric shaft are respectively penetrated through left plate and right plate of roller support.

[0009] Further, the left end of eccentric shaft is equipped with flat head screw threadedly connected therewith, and the both ends of spring are respectively abutted on flat head screw and left plate of roller support.

[0010] Further, the clamping position and clamping stop are matching protrusion and recess or matching edge hole and prism.

[0011] Further, it further includes roller;The roller is connected on eccentric shaft by bearing.

[0012] Further, the left end and right end of eccentric shaft are same central axis, and deviate from the central axis of eccentric shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses an eccentric shaft to allow the roller to change its working diameter, thus adjusting its pressure capacity and hose life within a certain range. Furthermore, during adjustment, simply press the flat-head screw to disengage the eccentric shaft, rotate it a certain angle, and then release the screw; the spring will automatically return it to its original position, making adjustment convenient. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a simplified structural diagram of the outer side of the right plate of the roller bracket in Embodiment 1;

[0017] Figure 3 This is a simplified structural diagram of the outer side of the right plate of the roller bracket in Embodiment 2;

[0018] Figure 4 This is a simplified structural diagram of the right end of the eccentric shaft in Embodiment 2;

[0019] Figure 5 This is a simplified structural diagram of the right end of the eccentric shaft in Embodiment 3;

[0020] Figure 6 This is a schematic diagram of the roller assembly structure of the utility model.

[0021] In the diagram: 1-1, left plate of roller bracket; 1-2, right plate of roller bracket; 2, bearing; 3, eccentric shaft; 4, flat-head screw; 5, roller; 6, spring; 7, bushing; 3-1, right end of pentagonal eccentric shaft; 1-2-2, locking position; 3-1-1, locking stop. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0023] Example 1:

[0024] Reference Figure 1 and Figure 2 The peristaltic pump provided in this embodiment includes a roller bracket, an eccentric shaft, and rollers; the rollers and the eccentric shaft are connected by bearings; the two ends of the eccentric shaft are respectively mounted on the left and right plates of the roller bracket, wherein a bushing is fixedly connected to the left plate of the roller bracket, and the left end of the eccentric shaft is inserted into the bushing and has a degree of freedom of rotation in the bushing;

[0025] The right end of the eccentric shaft is a pentagonal prism, and the right plate of the roller bracket is provided with a pentagonal prism hole corresponding to the pentagonal prism. The pentagonal prism and the pentagonal prism hole are matched.

[0026] A flat-head screw is installed on the left end of the eccentric shaft, which is threaded to it. The diameter of the nut of the flat-head screw is larger than the diameter of the left end of the eccentric shaft, which can prevent the spring sleeved on the eccentric shaft from coming off. Under normal conditions, the spring is in a compressed state, and the two ends of the spring press against the flat-head screw and the outside of the left plate bushing, respectively.

[0027] During adjustment, simply press the flat-head screw to disengage the pentagonal prism at the right end of the eccentric shaft from the pentagonal prism hole on the right plate, then rotate the eccentric shaft until it is in place, and then release the pressure to adjust the working diameter.

[0028] Example 2:

[0029] The difference between this embodiment and Embodiment 1 is that the right end of the eccentric shaft in this embodiment has a stop perpendicular to its axis. The stop can be specifically referred to... Figure 4 There are four card slots, each corresponding to one of the four card slots on the right panel, see reference. Figure 3 After adjustment, the stop is located in one of the other positions.

[0030] Example 3:

[0031] Reference Figure 5 The difference between this embodiment and embodiment two is that in this embodiment, the eccentric shaft has two locking blocks and the right plate has four locking positions.

[0032] The working principle of this embodiment:

[0033] Specific reference Figure 6 The publicly disclosed C is the working diameter of the roller, with the top of the roller always in contact with the hose; B is the diameter of the eccentric shaft body; and A is the position of the left or right end of the eccentric shaft. In summary, by rotating the left or right end of the eccentric shaft, the length between A and the top of the roller can be adjusted, thus adjusting the pressure on the hose.

[0034] It should be noted that the above description is merely a preferred application example of this utility model and is not intended to limit the scope of protection of this utility model. All technical solutions employing equivalent substitutions or equivalent transformations are within the scope of protection of this utility model.

Claims

1. A peristaltic pump with an adjustable roller assembly, comprising a roller bracket and an eccentric shaft, wherein both ends of the eccentric shaft are respectively mounted on the roller bracket; characterized in that, The right plate of the roller bracket is provided with at least two locking positions, and the right end of the eccentric shaft is provided with a locking stop, which is embedded in one of the locking positions; the left end of the eccentric shaft is fitted with and connected to a spring, and the other end of the spring abuts against the outer side of the left plate of the roller bracket.

2. The peristaltic pump with an adjustable roller assembly according to claim 1, characterized in that, The two ends of the eccentric shaft pass through the left and right plates of the roller bracket, respectively.

3. The peristaltic pump with an adjustable roller assembly according to claim 1, characterized in that, The left end of the eccentric shaft is provided with a flat-head screw that is threaded to it, and the two ends of the spring abut against the flat-head screw and the left plate of the roller bracket, respectively.

4. A peristaltic pump with an adjustable roller assembly according to claim 1, characterized in that, The locking positions and stops are matching protrusions and grooves or matching prisms and prisms.

5. A peristaltic pump with an adjustable roller assembly according to claim 1, characterized in that, It also includes rollers; the rollers are connected to the eccentric shaft via bearings.

6. A peristaltic pump with an adjustable roller assembly according to claim 1, characterized in that, The left and right ends of the eccentric shaft are on the same central axis, but deviate from the central axis of the eccentric shaft.

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