A shock-absorbing and noise-reducing horizontal spiral discharge filter centrifuge

Abstract

The utility model relates to centrifuge technical field, concretely relates to a shock absorption and noise reduction type horizontal spiral unloading filter centrifuge, and the mounting seat is equipped on the frame, the drive motor is arranged on the mounting seat, the drive motor outside is equipped with the sound shield main part, the bottom embedding setting of sound shield main part is equipped with permanent magnet, the mounting seat upper end is equipped with the electromagnetic coil that cooperates with permanent magnet, the frame is equipped with hall sensor and PID controller, the mounting seat outside surrounds and is provided with rectangular frame body, the sound shield main part and rectangular frame body side wall slide and fit, eliminate the direct rigid mechanical contact of sound shield and mounting seat through the suspension state, reduce the transmission of drive motor vibration through the sound shield main part to the frame, and further reduce the overall equipment vibration, and the sound shield main part wraps drive motor and blocks noise emission, guarantees good operating environment and personnel health.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge technology, specifically to a shock-absorbing and noise-reducing horizontal spiral discharge filter centrifuge. Background Technology

[0002] A horizontal screw centrifuge is a type of screw discharge sedimentation and filtration centrifuge. The slag phase is pushed to the discharge port at the small end of the drum by the blades on the screw pusher, while the liquid phase overflows through the overflow hole at the large end of the drum. This cycle continues to achieve continuous separation.

[0003] The drive motor of a horizontal screw centrifuge generates noise during operation. As the usage time and frequency increase, electromagnetic noise is generated by the magnetostriction of the motor core and the pulsation of the air gap magnetic field, as well as mechanical vibration noise caused by the unbalanced rotor and internal friction. Since horizontal screw centrifuges are often used in industrial environments and have large motor power, the noise may exceed 85 decibels if no measures are taken, affecting the operating environment and personnel health. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a shock-absorbing and noise-reducing horizontal screw discharge filter centrifuge to solve the above problems.

[0005] The purpose of this utility model is achieved as follows: A vibration-damping and noise-reducing horizontal spiral discharge filter centrifuge includes a centrifuge body and a drive motor mounted on a frame. The drive motor is connected to the drum assembly of the centrifuge body. A mounting base is provided on the frame, and the drive motor is mounted on the mounting base. A soundproof cover body is provided outside the drive motor. A permanent magnet is embedded in the bottom of the soundproof cover body. An electromagnetic coil that cooperates with the permanent magnet is provided at the upper end of the mounting base. A Hall sensor and a PID controller are provided on the frame. The Hall sensor is used to monitor the gap between the soundproof cover body and the mounting base. The PID controller adjusts the current of the electromagnetic coil according to the monitoring signal of the Hall sensor, so that the soundproof cover body is suspended above the mounting base. A rectangular frame is provided around the outside of the mounting base, and the soundproof cover body slides against the side wall of the rectangular frame.

[0006] Preferably, the upper end of the soundproof cover body is provided with heat dissipation holes.

[0007] Preferably, the output end of the drive motor is provided with a drive wheel, the end of the drum assembly of the centrifuge body is provided with a driven wheel, and a synchronous belt is provided between the drive wheel and the driven wheel.

[0008] Preferably, the drive wheel is provided with a protective shell, which is installed on the side wall of the frame.

[0009] Preferably, the soundproof cover body comprises, from the inside out, a nanoporous sound-absorbing material layer, an intermediate support layer, and a damping alloy plate layer, with the permanent magnet embedded at the bottom of the intermediate support layer.

[0010] This utility model has the following beneficial effects:

[0011] 1. This vibration-damping and noise-reducing horizontal screw discharge filter centrifuge achieves vibration reduction through electromagnetic levitation and closed-loop control. Specifically, the permanent magnet and the electromagnetic coil generate a repulsive force, and a Hall sensor detects the gap between the soundproof cover and the mounting base in real time and feeds it back to the PID controller. The PID controller dynamically adjusts the current of the electromagnetic coil to precisely control the magnetic force, ensuring that the soundproof cover remains suspended above the mounting base. The rectangular frame restricts the horizontal displacement of the soundproof cover, ensuring suspension stability. This suspension eliminates direct rigid mechanical contact between the soundproof cover and the mounting base, reducing the transmission of drive motor vibration directly to the frame through the soundproof cover, thereby reducing overall equipment vibration. The soundproof cover also encloses the drive motor, preventing noise leakage and ensuring a good operating environment and personnel health.

[0012] 2. The output end of the drive motor is equipped with a drive wheel, and the end of the centrifuge drum assembly is equipped with a driven wheel. A synchronous belt is provided between the drive wheel and the driven wheel. The synchronous belt is made of polyurethane. The diameter of the drive wheel and the driven wheel is the same, or the diameter of the drive wheel can be larger than that of the driven wheel to improve transmission efficiency. When the drive motor is running, it drives the drive wheel to rotate, which drives the driven wheel to rotate synchronously through the synchronous belt, thereby driving the drum assembly to rotate at high speed, realizing the separation of materials, that is, the liquid phase overflows from the overflow hole at the large end of the drum, and the solid phase is discharged from the slag discharge port at the small end of the drum. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a horizontal screw centrifuge in the prior art.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the soundproof cover body of this utility model;

[0017] Figure 4This is a schematic diagram of the cooperation structure between the driving wheel and the driven wheel of this utility model;

[0018] Figure 5 This is a schematic diagram of the cooperation structure between the soundproof cover body and the electromagnetic coil of this utility model;

[0019] The labels in the attached diagram are:

[0020] 1. Frame; 2. Centrifuge body; 3. Drive motor; 4. Drum assembly; 5. Mounting base; 6. Soundproof cover body; 61. Nanoporous sound-absorbing material layer; 62. Intermediate support layer; 63. Damping alloy plate layer; 7. Permanent magnet; 8. Electromagnetic coil; 9. Hall sensor; 10. PID controller; 11. Rectangular frame; 12. Drive wheel; 13. Driven wheel; 14. Synchronous belt; 15. Protective shell. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the technical solutions in the specific embodiments of this utility model are clearly and completely described below to further illustrate this utility model. Obviously, the specific embodiments described are only a part of the embodiments of this utility model, and not all of them.

[0022] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail below.

[0023] Example 1:

[0024] A vibration-damping and noise-reducing horizontal spiral discharge filter centrifuge includes a frame 1 on which a centrifuge body 2 and a drive motor 3 are mounted. The drive motor 3 is connected to the drum assembly 4 of the centrifuge body 2. The frame 1 is provided with a mounting base 5. The drive motor 3 is mounted on the mounting base 5. A soundproof cover body 6 is provided outside the drive motor 3. A permanent magnet 7 is embedded in the bottom of the soundproof cover body 6. An electromagnetic coil 8 that cooperates with the permanent magnet 7 is provided at the upper end of the mounting base 5. A Hall sensor 9 and a PID controller 10 are provided on the frame 1. The Hall sensor 9 is used to monitor the gap between the soundproof cover body and the mounting base 5. The PID controller 10 adjusts the current of the electromagnetic coil 8 according to the monitoring signal of the Hall sensor 9, so that the soundproof cover body is suspended above the mounting base 5. A rectangular frame 11 is provided around the outside of the mounting base 5. The soundproof cover body 6 slides against the side wall of the rectangular frame 11.

[0025] This equipment achieves vibration reduction through electromagnetic levitation and closed-loop control. The permanent magnet 7 and the electromagnetic coil 8 generate a repulsive force. A Hall sensor 9 detects the gap between the soundproof enclosure body 6 and the mounting base 5 in real time and feeds it back to the PID controller 10. The PID controller 10 dynamically adjusts the current of the electromagnetic coil 8, precisely controlling the magnetic force so that the soundproof enclosure body 6 is always suspended 5mm-10mm above the mounting base 5. The rectangular frame 11 restricts the horizontal displacement of the soundproof enclosure, ensuring suspension stability. This suspension eliminates direct rigid mechanical contact between the soundproof enclosure and the mounting base 5, reducing the transmission of vibration from the drive motor 3 directly to the frame 1 through the soundproof enclosure body 6, thereby reducing overall equipment vibration. The soundproof enclosure body 6 encloses the drive motor 3, blocking noise leakage and ensuring a good operating environment and personnel health.

[0026] Specifically, the Hall sensor 9 operates using the "Hall effect": when the gap between the soundproof enclosure and the mounting base 5 changes, the distance between the sensing element and the sensor probe changes, causing a change in the magnetic flux passing through the Hall element, and the output voltage changes linearly accordingly. For example, a gap of 5mm corresponds to 2.5V, and 10mm corresponds to 4.5V. The Hall sensor 9 transmits the voltage signal in real time to the AD conversion module of the PID controller 10, converting it into a digital quantity as the gap feedback value. The PID controller 10 compares the actual gap value with the set target value and calculates the deviation value.

[0027] It should be noted that the Hall sensor 9 and the PID controller 10 are both common existing devices and have the same working principle, so they will not be described in detail here.

[0028] In this embodiment, the upper end of the soundproof cover body 6 is provided with heat dissipation holes. When the drive motor 3 runs, it will generate heat. The heat accumulates inside the soundproof cover and is discharged through the heat dissipation holes at the upper end to allow air convection with the outside air. This avoids the problem of poor heat dissipation caused by the complete sealing of the soundproof cover. While ensuring noise reduction, it avoids the motor from being affected by high temperature overheating, thus achieving a balance between noise reduction and heat dissipation.

[0029] In this embodiment, the output end of the drive motor 3 is provided with a drive wheel 12, and the end of the drum assembly 4 of the centrifuge body 2 is provided with a driven wheel 13. A synchronous belt 14 is provided between the drive wheel 12 and the driven wheel 13. The synchronous belt 14 is made of polyurethane. The diameters of the drive wheel 12 and the driven wheel 13 are the same, or the diameter of the drive wheel 12 can be larger than that of the driven wheel 13 to improve transmission efficiency. When the drive motor 3 runs, it drives the drive wheel 12 to rotate, and drives the driven wheel 13 to rotate synchronously through the synchronous belt 14, thereby driving the drum assembly 4 to rotate at high speed, so as to realize the separation of materials, that is, the liquid phase overflows from the overflow hole at the large end of the drum, and the solid phase is discharged from the slag discharge port at the small end of the drum.

[0030] In this embodiment, a protective shell 15 is provided on the outside of the drive wheel 12. The protective shell 15 is installed on the side wall of the frame 1. The protective shell 15 is made of Q235 steel plate. The protective shell 15 encloses the exposed parts of the drive wheel 12, the synchronous belt 14 and the driven wheel 13, forming a physical isolation to prevent the operator from contacting the high-speed rotating drive wheel 12 and the synchronous belt 14, avoiding safety accidents. At the same time, it can also block external dust and impurities from entering, protect the synchronous belt 14 and the two wheels, and extend their service life.

[0031] In this embodiment, the soundproof cover body 6 includes, from the inside out, a nanoporous sound-absorbing material layer 61, an intermediate support layer 62, and a damping alloy plate layer 63. The permanent magnet 7 is embedded in the bottom of the intermediate support layer 62. The nanoporous sound-absorbing material layer 61 adsorbs the mid-to-high frequency noise (such as electromagnetic noise) generated by the drive motor 3 through its porous structure, converting sound energy into heat energy for consumption. The intermediate support layer 62 is a rigid structure that not only fixes the permanent magnet 7 to cooperate with the suspension system, but also supports the inner and outer layers of materials. The damping alloy plate layer 63 utilizes the high damping characteristics of the alloy to suppress the vibration of the soundproof cover itself, while reflecting or blocking the leakage of low-frequency noise (such as mechanical vibration noise).

[0032] The main body 6 of the soundproof enclosure significantly improves the noise reduction performance of the soundproof enclosure through the synergistic effect of sound absorption, blocking and vibration reduction: compared with a single material, the multi-layer structure can cover a wider range of noise frequencies, such as mid-high frequency and low frequency, further reducing the noise leakage of the drive motor 3, making it easier to control the equipment noise below 85 decibels and improve the operating environment.

[0033] The working principle of this utility model is as follows: This vibration-damping and noise-reducing horizontal spiral discharge filter centrifuge achieves vibration reduction through electromagnetic levitation and closed-loop control. That is, the permanent magnet 7 and the electromagnetic coil 8 generate a repulsive force. The Hall sensor 9 detects the gap between the soundproof cover body 6 and the mounting base 5 in real time and feeds it back to the PID controller 10. The PID controller 10 dynamically adjusts the current of the electromagnetic coil 8 and precisely controls the magnitude of the magnetic force, so that the soundproof cover body 6 is always suspended 5mm-10mm above the mounting base 5. The rectangular frame 11 restricts the horizontal displacement of the soundproof cover and ensures the suspension stability. The suspension state eliminates the direct rigid mechanical contact between the soundproof cover and the mounting base 5, reduces the transmission of vibration of the drive motor 3 directly to the frame 1 through the soundproof cover body 6, and thus reduces the overall equipment vibration. The soundproof cover body 6 encloses the drive motor 3 to block noise leakage and ensure a good operating environment and personnel health.

[0034] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be divided into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model. The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vibration-damping and noise-reducing horizontal spiral discharge filter centrifuge, comprising a centrifuge body (2) and a drive motor (3) mounted on a frame (1), wherein the drive motor (3) is connected to the drum assembly (4) of the centrifuge body (2), characterized in that: The frame (1) is provided with a mounting base (5), the drive motor (3) is mounted on the mounting base (5), the drive motor (3) is provided with a soundproof cover body (6) outside the drive motor (3), a permanent magnet (7) is embedded in the bottom of the soundproof cover body (6), an electromagnetic coil (8) that cooperates with the permanent magnet (7) is provided at the upper end of the mounting base (5), a Hall sensor (9) and a PID controller (10) are provided on the frame (1), the Hall sensor (9) is used to monitor the gap between the soundproof cover body and the mounting base (5), the PID controller (10) adjusts the current of the electromagnetic coil (8) according to the monitoring signal of the Hall sensor (9) so that the soundproof cover body is suspended above the mounting base (5), a rectangular frame (11) is provided around the outside of the mounting base (5), and the soundproof cover body (6) slides against the side wall of the rectangular frame (11).

2. The vibration-damping and noise-reducing horizontal screw discharge filter centrifuge according to claim 1, characterized in that: The soundproof cover body (6) has heat dissipation holes at the upper end.

3. The vibration-damping and noise-reducing horizontal screw discharge filter centrifuge according to claim 1, characterized in that: The output end of the drive motor (3) is provided with a drive wheel (12), the end of the drum assembly (4) of the centrifuge body (2) is provided with a driven wheel (13), and a synchronous belt (14) is provided between the drive wheel (12) and the driven wheel (13).

4. A vibration-damping and noise-reducing horizontal screw discharge filter centrifuge according to claim 3, characterized in that: The drive wheel (12) is provided with a protective shell (15), which is installed on the side wall of the frame (1).

5. A vibration-damping and noise-reducing horizontal screw discharge filter centrifuge according to claim 1, characterized in that: The soundproof cover body (6) includes, from the inside out, a nanoporous sound-absorbing material layer (61), an intermediate support layer (62), and a damping alloy plate layer (63), and the permanent magnet (7) is embedded in the bottom of the intermediate support layer (62).

Images