Vibration damping and stabilizing device for motor protective cover of centrifugal machine

Abstract

The utility model provides a centrifugal machine motor protective cover damping stabilizing device, which belongs to the technical field of centrifugal machines, and comprises a box body, a cover plate rotationally connected to the top wall of the box body, a mounting frame fixedly connected to the bottom wall of the box body, a motor damping assembly fixedly connected to the inner wall of the box body, and a motor damping assembly fixedly connected to the mounting frame. The motor cushioning assembly comprises a transfer frame fixedly connected to the inner wall of the box body and a cushioning hydraulic cylinder rotationally connected to the outer wall of the transfer frame. The driving assembly is fixedly connected to the inner wall of the motor protection cover; the cushioning isolation assembly is fixedly connected to the output end of the driving assembly; the centrifugal cushioning assembly is rotationally connected to the inner wall of the box body; and the centrifugal assembly is rotationally connected to the inner wall of the centrifugal cushioning assembly. According to the damping device, the centrifugal bin is cushioned and supported through the cushioning spring arm and the stabilizing sleeve frame, power is transmitted through the transmission base, the transmission sliding frame and the universal joint, and abrasion of internal vibration to the driving motor is reduced while damping of the centrifugal machine is achieved.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge technology, and more specifically, to a vibration damping and stabilizing device for a centrifuge motor protective cover. Background Technology

[0002] Centrifuges are machines that use centrifugal force to separate the components in a mixture of liquids and solid particles or liquids and liquids. However, vibration is unavoidable in existing centrifuges during operation. The main causes of vibration are uneven material distribution and unbalanced rotors. Uneven feeding or the presence of large particles can cause irregular vibration. Similarly, uneven mass distribution of the rotor or problems with the fit between the rotor and bearings can lead to rotor imbalance during rotation, resulting in vibration.

[0003] A search revealed that Chinese patent application number 202221467807.2 discloses a shock-absorbing device for a centrifuge, comprising a centrifuge body, a connecting plate, support rods, a stabilizer frame, and a limiting mechanism. The connecting plate is mounted on the bottom of the centrifuge body, and support rods are rotatably mounted around the connecting plate. One end of each of the four support rods is slidably mounted on one of the four side plates of the stabilizer frame, and a buffer spring is vertically installed inside the stabilizer frame. However, this device still has the following drawbacks:

[0004] The aforementioned patent document uses a buffer spring as the main damping structure to reduce centrifuge vibration. However, this passive damping method can only reduce the impact of centrifuge vibration on the outside world, but cannot alleviate the impact of centrifuge vibration on its internal parts. This results in huge wear on the rotor and bearings after long-term use, reducing the service life of the centrifuge and increasing the maintenance cost of the centrifuge.

[0005] Therefore, we have made improvements and proposed a vibration reduction and stabilization device for centrifuge motor protective covers. Utility Model Content

[0006] The purpose of this invention is to address the current practice of using buffer springs as the main shock-absorbing structure to reduce centrifuge vibration. This passive shock-absorbing method can only reduce the impact of centrifuge vibration on the external environment, but cannot alleviate the impact of centrifuge vibration on its internal parts. As a result, after long-term use, the rotor and bearings of the centrifuge will experience significant wear, reducing the service life of the centrifuge and increasing the maintenance cost.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] A vibration damping and stabilizing device for a centrifuge motor protective cover includes a housing, a cover plate rotatably connected to the top wall of the housing, and a mounting bracket fixedly connected to the bottom wall of the housing. It also includes:

[0009] A motor damping assembly is fixedly connected to the inner wall of the housing and is used to buffer the vibration during the operation of the device. The motor damping assembly includes a transfer frame fixedly connected to the inner wall of the housing, a damping hydraulic cylinder rotatably connected to the outer wall of the transfer frame, and a motor protective cover rotatably connected to the telescopic end of the damping hydraulic cylinder. The transfer frame is symmetrical about the central axis of the housing, and the damping hydraulic cylinders are symmetrically distributed about the central axis of the transfer frame.

[0010] The drive assembly is fixedly connected to the inner wall of the motor protective cover and is used to output the power required for centrifugal operation.

[0011] The vibration damping and isolation component is fixedly connected to the output end of the drive component to reduce the impact of vibration on the drive component;

[0012] Centrifugal vibration damping components are rotatably connected to the inner wall of the chamber to reduce the impact of vibration on the chamber.

[0013] The centrifugal assembly is rotatably connected to the inner wall of the centrifugal damping assembly and is used to centrifuge materials.

[0014] As a preferred technical solution of this utility model, the driving component includes a driving motor fixedly connected to the inner wall of the motor protective cover and a motor counterweight fixedly connected to the bottom wall of the motor protective cover.

[0015] As a preferred technical solution of this utility model, the shock absorption and isolation component includes a transmission base fixedly connected to the output end of the drive motor, a transmission slide slidably connected to the inner wall of the transmission base, and a universal joint fixedly connected to the top wall of the transmission slide.

[0016] As a preferred technical solution of this utility model, the centrifugal damping assembly includes a damping spring arm rotatably connected to the inner wall of the box and a stabilizing sleeve rotatably connected to the telescopic end of the damping spring arm. The damping spring arm is symmetrical about the central axis of the box.

[0017] As a preferred technical solution of this utility model, the centrifugal assembly includes a centrifugal chamber rotatably connected to the inner wall of a stabilizing sleeve, a centrifugal frame fixedly connected to the inner wall of the centrifugal chamber, and a centrifugal bucket rotatably connected to the inner wall of the centrifugal frame. The centrifugal frame and the centrifugal bucket are evenly distributed about the inner wall of the centrifugal chamber, and the centrifugal chamber is fixedly connected to a universal joint.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In the solution of this utility model:

[0020] The centrifuge chamber is supported by damping spring arms and stabilizing sleeves to reduce vibration during operation and minimize its impact on the stability of the chamber. The centrifuge chamber is then rotated via a drive motor, transmission base, transmission slide, and universal joint. Because the universal joint can change the power output direction during transmission, and the transmission slide can move freely up and down along the inner wall of the transmission base, the wear on the drive motor and its bearings is significantly reduced when the centrifuge chamber vibrates or shifts. This achieves both vibration damping and protection of the drive motor, minimizing wear caused by vibration. It also solves the problem of existing technologies that use buffer springs as the primary vibration damping structure, which only reduces the impact of centrifuge vibration on the external environment but cannot alleviate the impact on internal components. This leads to significant wear on the rotor and bearings after long-term use, reducing the centrifuge's service life and increasing maintenance costs. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of a centrifuge motor protective cover vibration reduction and stabilization device provided by this utility model;

[0022] Figure 2 A cross-sectional structural schematic diagram of a vibration damping and stabilizing device for a centrifuge motor protective cover provided by this utility model;

[0023] Figure 3 A schematic diagram of the internal structure of a centrifuge motor protective cover vibration damping and stabilizing device provided by this utility model;

[0024] Figure 4 This utility model provides a vibration damping and stabilizing device for a centrifuge motor protective cover. Figure 3 Enlarged schematic diagram of structure A in the middle.

[0025] The image shows:

[0026] 1. Container; 11. Mounting bracket; 12. Cover plate; 2. Adapter bracket; 21. Shock-absorbing hydraulic cylinder; 22. Motor protective cover; 3. Drive motor; 31. Motor counterweight; 4. Transmission base; 41. Transmission slide; 42. Universal joint; 5. Centrifuge chamber; 51. Centrifuge frame; 52. Centrifuge bucket; 6. Shock-absorbing spring arm; 61. Stabilizing sleeve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0028] like Figure 1, Figure 2 and Figure 3 As shown, this embodiment proposes a vibration damping and stabilizing device for a centrifuge motor protective cover, including a housing 1, a cover plate 12 rotatably connected to the top wall of the housing 1, and a mounting bracket 11 fixedly connected to the bottom wall of the housing 1, and further including:

[0029] The motor damping assembly is fixedly connected to the inner wall of the housing 1 and is used to buffer the vibration during the operation of the device. The motor damping assembly includes a transfer frame 2 fixedly connected to the inner wall of the housing 1, a damping hydraulic cylinder 21 rotatably connected to the outer wall of the transfer frame 2, and a motor protective cover 22 rotatably connected to the telescopic end of the damping hydraulic cylinder 21. The transfer frame 2 is symmetrical about the central axis of the housing 1, and the damping hydraulic cylinder 21 is symmetrically distributed about the central axis of the transfer frame 2.

[0030] The drive assembly is fixedly connected to the inner wall of the motor protective cover 22 and is used to output the power required for centrifugal operation.

[0031] The vibration damping and isolation component is fixedly connected to the output end of the drive component to reduce the impact of vibration on the drive component;

[0032] The centrifugal vibration damping component is rotatably connected to the inner wall of the housing 1 to reduce the impact of vibration on the housing 1;

[0033] The centrifugal assembly is rotatably connected to the inner wall of the centrifugal damping assembly and is used to centrifuge materials.

[0034] The control damping hydraulic cylinder 21 drives the motor protective cover 22 and the drive motor 3 to move in the vertical direction, so that the drive motor 3 and the centrifuge chamber 5 always maintain a safe distance to avoid interference with the cooperation between the transmission base 4 and the transmission slide 41.

[0035] like Figure 3 As shown, in a preferred embodiment, based on the above method, the drive assembly further includes a drive motor 3 fixedly connected to the inner wall of the motor protective cover 22 and a motor counterweight 31 fixedly connected to the bottom wall of the motor protective cover 22. The motor counterweight 31 at the bottom of the motor protective cover 22 can lower the working center of gravity of the drive motor 3 and enhance the stability of the drive motor 3 during operation.

[0036] like Figure 3 and Figure 4As shown, in a preferred embodiment, based on the above method, the shock-absorbing and isolation component further includes a transmission base 4 fixedly connected to the output end of the drive motor 3, a transmission slide 41 slidably connected to the inner wall of the transmission base 4, and a universal joint 42 fixedly connected to the top wall of the transmission slide 41. The drive motor 3 drives the centrifuge chamber 5 to rotate through the transmission base 4, the transmission slide 41, and the universal joint 42. Since the universal joint 42 can change the power output direction while transmitting power, and the transmission slide 41 can move freely up and down along the inner wall of the transmission base 4, the drive motor 3 and its transmission bearings are not affected when the centrifuge chamber 5 vibrates and deviates in the vertical and horizontal directions.

[0037] like Figure 1 and Figure 3 As shown, in a preferred embodiment, based on the above method, the centrifugal damping assembly further includes a damping spring arm 6 rotatably connected to the inner wall of the housing 1 and a stabilizing sleeve 61 rotatably connected to the telescopic end of the damping spring arm 6. The damping spring arm 6 is symmetrical about the central axis of the housing 1. The damping spring arm 6 uses the stabilizing sleeve 61 to provide damping support for the centrifugal chamber 5, thereby reducing the vibration of the centrifugal chamber 5 during operation and reducing the impact of the vibration of the centrifugal chamber 5 on the stability of the housing 1.

[0038] like Figure 2 , Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the centrifugal assembly further includes a centrifugal chamber 5 rotatably connected to the inner wall of the stabilizing sleeve 61, a centrifugal frame 51 fixedly connected to the inner wall of the centrifugal chamber 5, and a centrifugal bucket 52 rotatably connected to the inner wall of the centrifugal frame 51. The centrifugal frame 51 and the centrifugal bucket 52 are evenly distributed about the inner wall of the centrifugal chamber 5. The centrifugal chamber 5 is fixedly connected to the universal joint 42. The material to be centrifuged is placed into the centrifugal bucket 52, and then the cover plate 12 is opened to place the centrifugal bucket 52 into the centrifugal frame 51, and then the cover plate 12 is closed.

[0039] Specifically, when using this device: the material to be centrifuged is placed into the centrifuge hopper 52, then the cover plate 12 is opened and the centrifuge hopper 52 is placed into the centrifuge rack 51. The cover plate 12 is closed, completing the preparation work before centrifugation. The drive motor 3 is started. The drive motor 3 drives the centrifuge chamber 5 to rotate through the transmission base 4, the transmission slide 41, and the universal joint 42. Since the universal joint 42 can change the power output direction while transmitting power, and the transmission slide 41 can move freely up and down along the inner wall of the transmission base 4, when the centrifuge chamber 5 vibrates and shifts in the vertical and horizontal directions, the drive motor 3 and its transmission slide 41 can rotate. The moving bearing is unaffected by this. The control damping hydraulic cylinder 21 drives the motor protective cover 22 and the drive motor 3 to move in the vertical direction, so that the drive motor 3 and the centrifuge chamber 5 always maintain a safe distance to avoid interference with the cooperation between the transmission base 4 and the transmission slide 41. The motor counterweight block 31 at the bottom of the motor protective cover 22 can lower the working center of gravity of the drive motor 3 and enhance the stability of the drive motor 3 during operation. The damping spring arm 6 uses the stabilizing sleeve 61 to provide damping support for the centrifuge chamber 5, reducing the vibration of the centrifuge chamber 5 during operation and reducing the impact of the vibration of the centrifuge chamber 5 on the stability of the box 1.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A vibration damping and stabilizing device for a centrifuge motor protective cover, comprising a housing (1), a cover plate (12) rotatably connected to the top wall of the housing (1), and a mounting bracket (11) fixedly connected to the bottom wall of the housing (1), further comprising: The motor damping assembly is fixedly connected to the inner wall of the housing (1) and is used to buffer the vibration when the device is working. The motor damping assembly includes a transfer frame (2) fixedly connected to the inner wall of the housing (1), a damping hydraulic cylinder (21) rotatably connected to the outer wall of the transfer frame (2), and a motor protective cover (22) rotatably connected to the telescopic end of the damping hydraulic cylinder (21). The transfer frame (2) is symmetrical about the central axis of the housing (1), and the damping hydraulic cylinder (21) is symmetrically distributed about the central axis of the transfer frame (2). The drive assembly is fixedly connected to the inner wall of the motor protective cover (22) and is used to output the power required for centrifugal operation; The vibration damping and isolation component is fixedly connected to the output end of the drive component to reduce the impact of vibration on the drive component; Centrifugal vibration damping assembly is rotatably connected to the inner wall of the box (1) to reduce the impact of vibration on the box (1); The centrifugal assembly is rotatably connected to the inner wall of the centrifugal damping assembly and is used to centrifuge materials.

2. The centrifuge motor protective cover vibration damping and stabilizing device according to claim 1, characterized in that, The drive assembly includes a drive motor (3) fixedly connected to the inner wall of the motor protective cover (22) and a motor counterweight (31) fixedly connected to the bottom wall of the motor protective cover (22).

3. The centrifuge motor protective cover vibration damping and stabilizing device according to claim 2, characterized in that, The shock-absorbing and isolation assembly includes a transmission base (4) fixedly connected to the output end of the drive motor (3), a transmission slide (41) slidably connected to the inner wall of the transmission base (4), and a universal joint (42) fixedly connected to the top wall of the transmission slide (41).

4. The centrifuge motor protective cover vibration damping and stabilizing device according to claim 1, characterized in that, The centrifugal damping assembly includes a damping spring arm (6) rotatably connected to the inner wall of the box (1) and a stabilizing sleeve (61) rotatably connected to the telescopic end of the damping spring arm (6). The damping spring arm (6) is symmetrical about the central axis of the box (1).

5. The centrifuge motor protective cover vibration damping and stabilizing device according to claim 4, characterized in that, The centrifugal assembly includes a centrifugal chamber (5) rotatably connected to the inner wall of a stabilizing sleeve (61), a centrifugal frame (51) fixedly connected to the inner wall of the centrifugal chamber (5), and a centrifugal bucket (52) rotatably connected to the inner wall of the centrifugal frame (51). The centrifugal frame (51) and the centrifugal bucket (52) are evenly distributed about the inner wall of the centrifugal chamber (5), and the centrifugal chamber (5) is fixedly connected to a universal joint (42).

Images