Magnetic suspension mute type roller

Abstract

The utility model discloses a magnetic suspension mute type roller, and belongs to the technical field of peristaltic pumps. The device comprises a roller bracket and a roller assembly, the roller bracket is positioned between the upper pressing block and the lower support; a plurality of pin shafts which are arranged in a circumferential array and are parallel to one another are arranged on the roller bracket; the roller assembly comprises a plurality of rollers, and the rollers are in one-to-one correspondence with the pin shafts; each roller is arranged on the corresponding pin shaft in a sleeving manner; the roller support comprises two parallel annular wall plates, and the two ends of the pin shaft are connected to the corresponding annular wall plates respectively. Grooves are formed in the two ends of the rolling wheel, and annular magnets I are fixedly arranged at the bottoms of the grooves; the inner side of the annular wall plate is connected with an annular magnet II, and the annular magnet I and the annular magnet II are located on the same central axis. And the annular magnet I and the annular magnet II on the same side of the roller tend to be far away from each other. According to the utility model, the roller can be always kept in the middle position when running at a high speed under load, and collision and friction with the roller bracket do not occur.

Description

Technical Field

[0001] The utility model relates to a magnetic suspension silent roller, belonging to the technical field of peristaltic pumps. Background Art

[0002] Peristaltic pump is a special type of positive displacement pump, mainly used for fluid distribution or delivery, and is widely used in pharmaceutical, food, chemical and other industries. When the peristaltic pump head is working, the roller rotates, and a section of the pump tube between the two rollers forms a "pillow"-shaped fluid, and the fluid is pumped by alternately squeezing and releasing the elastic delivery hose of the pump; the volume of the "pillow" affects the flow rate; the speed of the roller also affects the flow rate.

[0003] The roller assemblies of existing peristaltic pumps can be divided into two types, metal roller assemblies and plastic roller assemblies. Among them, plastic roller assemblies are widely used in small light-load pump heads due to their compact structure and low cost.

[0004] There are two problems with existing plastic roller assemblies: (1) noise generated when running at high speed with load; and (2) wear of the roller end surface due to long-term operation of the roller. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a magnetic suspension silent roller, which can keep the roller in the middle position at all times when running at high speed with load, without collision and friction with the roller bracket.

[0006] The utility model is realized by the following technical solutions:

[0007] A suspended silent roller, comprising an upper pressing block and a lower support facing each other at both ends; and also comprising a roller bracket and a roller assembly;

[0008] The roller bracket is located between the upper pressing block and the lower support; a plurality of pins arranged in a circumferential array and parallel to each other are arranged on the roller bracket; the roller assembly includes a plurality of rollers, and the rollers correspond to the pins one by one; each roller is mounted on a corresponding pin;

[0009] The roller bracket includes two parallel annular wall plates, and the two ends of the pin shaft are respectively connected to the corresponding annular wall plates;

[0010] Grooves are provided at both ends of the roller, and an annular magnet I is fixed at the bottom of the groove; an annular magnet II is connected to the inner side of the annular wall plate, and the annular magnet I and the annular magnet II are located on the same central axis; the annular magnet I and the annular magnet II on the same side of the roller tend to move away from each other.

[0011] Furthermore, the pin shaft is interference fit with the annular wall plate.

[0012] Furthermore, the pin shaft and the roller are clearance-matched.

[0013] Furthermore, the pins are arranged in a central array along the annular wall plate.

[0014] Furthermore, the annular magnet I is clearance-matched with the pin shaft.

[0015] Furthermore, the length of the roller is smaller than the distance between the two annular wall plates.

[0016] Compared with the background technology, the utility model has the following advantages:

[0017] The utility model installs two groups of magnets on both sides of the roller, each group of magnets is composed of two magnets with opposite magnetic properties, so that the roller can always be kept in the middle position when running at high speed with load, and no collision or friction with the roller bracket occurs.

[0018] Compared with conventional plastic roller assemblies, the utility model has the following two advantages:

[0019] (1) Mute;

[0020] (2) Avoid wear on the roller end surface and increase the roller service life; BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 Schematic diagram of the cross-section of the peristaltic pump structure of this embodiment.

[0023] In the figure: 1, groove, 2, roller, 3, annular magnet I, 4, annular wall plate, 5, annular magnet II, 6, pin shaft, 7, roller bracket, 8, lower support, 9, upper pressure block. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-2 The specific implementation methods of the utility model are further described in detail with examples.

[0025] Refer to the attached Figure 1 The roller bracket of this embodiment is provided with a plurality of pins arranged in a circumferential array and parallel to each other; the roller assembly includes a plurality of rollers, and the rollers correspond to the pins one by one; each roller is mounted on a corresponding pin;

[0026] The roller bracket includes two parallel annular wall plates, and the two ends of the pin shaft are respectively connected to the corresponding annular wall plates;

[0027] Grooves are provided at both ends of the roller, and an annular magnet I is fixed at the bottom of the groove; an annular magnet II is connected to the inner side of the annular wall plate, and the annular magnet I and the annular magnet II are located on the same central axis; the annular magnet I and the annular magnet II on the same side of the roller have a tendency to move away from each other, that is, the annular magnet I and the annular magnet II are facing each other with the same poles.

[0028] In this embodiment, the pin shaft and the roller are clearance-fitted, the pin shaft and the annular wall plate are interference-fitted, and the annular magnet I is clearance-fitted with the pin shaft.

[0029] Reference Figure 2 The roller bracket is located between the upper pressing block and the lower support; the pin shaft is arranged along the center array of the annular wall plate.

Claims

1. A magnetic suspension silent roller, comprising an upper pressing block and a lower support facing each other at both ends; characterized in that: Also included are a roller bracket and a roller assembly; The roller bracket is located between the upper pressing block and the lower support; a plurality of pins arranged in a circumferential array and parallel to each other are arranged on the roller bracket; the roller assembly includes a plurality of rollers, and the rollers correspond to the pins one by one; each roller is mounted on a corresponding pin; The roller bracket includes two parallel annular wall plates, and the two ends of the pin shaft are respectively connected to the corresponding annular wall plates; Grooves are provided at both ends of the roller, and an annular magnet I is fixed at the bottom of the groove; an annular magnet II is connected to the inner side of the annular wall plate, and the annular magnet I and the annular magnet II are located on the same central axis; the annular magnet I and the annular magnet II on the same side of the roller tend to move away from each other.

2. The magnetic suspension silent roller according to claim 1, characterized in that: The pin shaft is interference fit with the annular wall plate.

3. The magnetic suspension silent roller according to claim 1, characterized in that: The pin shaft and the roller are clearance-matched.

4. The magnetic suspension silent roller according to claim 1, characterized in that: The pins are arranged in a central array along the annular wall.

5. The magnetic suspension silent roller according to claim 1, characterized in that: The annular magnet I is clearance-matched with the pin shaft.

6. The magnetic suspension silent roller according to claim 1, characterized in that: The length of the roller is smaller than the distance between the two annular wall plates.

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