Horizontal screw centrifuge with noise reduction device

Abstract

The utility model discloses a horizontal screw centrifuge with a noise reduction device, which comprises a housing, a rotary drum is rotatably connected in the housing, a screw propeller having a speed difference with the rotation of the rotary drum is rotatably connected in the rotary drum, the housing comprises an upper layer plate and a lower layer plate, and sound insulation cotton is filled between the upper layer plate and the lower layer plate. The noise reduction device is ingenious and reasonable in structural design, capable of greatly reducing noise generated during operation of the horizontal screw centrifugal machine and worthy of popularization and application.

Description

Technical Field

[0001] The utility model relates to the field of centrifuges, in particular to a horizontal screw centrifuge with a noise reduction device. Background Art

[0002] Horizontal spiral decanter centrifuge is referred to as horizontal spiral centrifuge, which is a high-efficiency centrifugal separation equipment.

[0003] In my country's existing centrifuge industry, centrifuges produce aerosols during the centrifugation process. Adding a sealing cover can prevent the aerosols from spreading and play a sealing role. When the centrifuge is running at high speed, the rotor may fly out, posing a safety hazard. Covering the cover is a safety guarantee. Materials are separated by high-speed rotation, and tightly screwing the cover on can prevent the materials from being thrown out during the centrifugation process. Many centrifuges are equipped with refrigeration units to keep the internal temperature under control during centrifugation. Covering the cover helps maintain the temperature. The cover on the centrifuge is usually made of a single layer of thin plate. Although there are strict requirements for factory noise, the noise effect is not good.

[0004] Chinese utility model patent CN 211887440 U discloses an automatic cleaning device for a decanter centrifuge, comprising a decanter centrifuge housing and a cleaning pipe assembly. The housing houses a rotating drum, which contains a pusher screw. The cleaning pipe assembly is fixedly mounted at the upper and lower ends of the pusher screw. A conversion joint is mounted at the head end of the cleaning pipe assembly, which is connected to a diverter pipe via a conversion joint flange. A branching solenoid valve is fixedly mounted on the diverter pipe, which is fixedly connected to a water conduit via a tee joint. A master control solenoid valve is fixedly mounted on the diverter pipe. The cleaning pipe assembly includes an outer pipe and an inner pipe. The inner pipe is fitted with first bearings at both ends and is mounted within the outer pipe via the first bearings. The outer pipe has a water spray hole at its top end, while the inner pipe has a strip-shaped through-slot at its top end. A first alignment arrow is engraved on the head end of the outer pipe, while a second alignment arrow is engraved on the head end of the inner pipe. This decanter centrifuge is noisy and has poor sound insulation. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the above-mentioned prior art and provide a decanter centrifuge with a noise reduction device that can achieve the purpose of noise reduction by adding a sound insulation sponge in the interlayer of the cover shell, thereby meeting the requirements of low noise and good sound insulation during the operation of the centrifuge and maintaining the temperature of the centrifuge equipped with a refrigeration unit.

[0006] The present invention solves the technical problem by employing a technical solution: a decanter centrifuge with a noise reduction device comprises a housing, a drum rotatably connected therein, a propeller rotatably connected therein with a speed difference from the drum, the housing comprising an upper plate and a lower plate, the space between which is filled with sound insulation. The sound insulation is used to isolate the noise generated by the decanter centrifuge during operation, thereby achieving low noise levels during operation. Furthermore, the decanter centrifuge has excellent thermal insulation properties. When equipped with a refrigeration unit, the internal temperature can be controlled during centrifugation, thereby facilitating temperature maintenance.

[0007] A wave-shaped curved plate is fixed between the upper and lower plates. The curved plate has a cavity filled with water, and the gaps between the curved plates are filled with sound insulation cotton. The curved plate, cavity, and water here play a role in providing excellent sound insulation and vibration reduction.

[0008] To further improve the performance, a set of rubber strips are fixed on both the upper and lower plates, evenly distributed along the arc direction of the cover, and the support points of the bent plate are located at the two rubber strips. The role of the rubber strips here is to further reduce vibration and noise.

[0009] The beneficial effects of the utility model are:

[0010] 1). The noise generated by the decanter centrifuge during operation can be isolated by the sound insulation cotton, so that the decanter centrifuge has low noise and good heat preservation effect during operation;

[0011] 2) Bending plates, cavities and water can achieve better vibration reduction and noise reduction effects;

[0012] 3). Rubber strips can also further reduce vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 This is a schematic structural diagram of the cover shell in the utility model;

[0016] Figure 4 for Figure 3 A local enlarged view of area A.

[0017] Description of the accompanying drawings: cover 1, upper plate 1-1, lower plate 1-2, sound insulation cotton 1-3, rotating drum 2, screw propeller 3, bending plate 4, cavity 4-1, water 4-2, rubber strip 5. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Referring to the accompanying drawings: This horizontal screw centrifuge with a noise reduction device includes a cover shell 1, a drum 2 is rotatably connected inside the cover shell 1, a spiral propeller 3 with a speed difference from the drum 2 is rotatably connected inside the drum 2, and the cover shell 1 includes an upper plate 1-1 and a lower plate 1-2, and sound insulation cotton 1-3 is filled between the upper plate 1-1 and the lower plate 1-2.

[0020] A wave-shaped bending plate 4 is fixed between the upper plate 1-1 and the lower plate 1-2. A cavity 4-1 is opened in the bending plate 4. The cavity 4-1 is filled with water 4-2. Sound insulation cotton 1-3 is filled in the gap between the bending plates 4.

[0021] A group of rubber strips 5 evenly distributed along the arc direction of the cover 1 are fixed on both the upper plate 1 - 1 and the lower plate 1 - 2 , and the support points of the bent plate 4 are located at the two rubber strips 5 .

[0022] The working principle of the present invention is as follows: when the horizontal screw centrifuge is in operation, severe noise and vibration will be generated. The noise generated by the horizontal screw centrifuge during operation can be isolated through the sound insulation cotton 1-3, so that the horizontal screw centrifuge can be operated with low noise. The bending plate 4, the cavity 4-1 and the water 4-2 can play a better role in vibration reduction and noise reduction. The rubber strip 5 can also play a further role in vibration reduction and noise reduction. Through multiple vibration reduction, noise reduction and sound insulation functions, the horizontal screw centrifuge can run with lower noise, good thermal insulation effect, and more comfortable for operators. The horizontal screw centrifuge equipped with a refrigeration unit can better maintain its temperature, which is worthy of promotion and application.

[0023] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A decanter centrifuge with a noise reduction device, comprising a housing (1), a drum (2) rotatably connected to the housing (1), and a screw propeller (3) rotatably connected to the drum (2) and having a speed difference with the drum (2), wherein: The cover shell (1) comprises an upper plate (1-1) and a lower plate (1-2), and sound insulation cotton (1-3) is filled between the upper plate (1-1) and the lower plate (1-2).

2. The decanter centrifuge with a noise reduction device according to claim 1, characterized in that: A wave-shaped bending plate (4) is fixed between the upper plate (1-1) and the lower plate (1-2); a cavity (4-1) is provided in the bending plate (4); the cavity (4-1) is filled with water (4-2); and the sound insulation cotton (1-3) is filled in the gap between the bending plates (4).

3. The decanter centrifuge with a noise reduction device according to claim 2, characterized in that: A group of rubber strips (5) evenly distributed along the arc direction of the cover shell (1) are fixed on both the upper plate (1-1) and the lower plate (1-2), and the support points of the bent plate (4) are located at the two rubber strips (5).

Images