An axial vibration centrifuge

Abstract

This invention provides an axial vibration centrifuge, relating to the field of centrifuge technology, primarily addressing the problem in existing technologies where the sieve basket is difficult to generate axial vibration, resulting in unsatisfactory unclogging effects. The axial vibration centrifuge of this invention includes a housing, a sieve basket, a spindle box, and a drive mechanism. A front shaft and a rear shaft are coaxially arranged within the spindle box. The front shaft is connected to the sieve basket, and the rear shaft is connected to the drive mechanism. The front and rear shafts are slidably connected via a spline structure. A closed cam groove is provided along the circumference of the front shaft. A roller that mates with the cam groove is fixed on the spindle box. When the rear shaft rotates, the cam groove and the roller engage to generate axial reciprocating motion of the front shaft. This invention eliminates the need for a vibrator; relying solely on the interaction between the roller and the cam groove, the sieve basket generates axial vibration once per revolution, significantly improving the unclogging effect of the sieve holes and the efficiency of solid-liquid separation.

Description

Technical Field

[0001] This utility model is specifically an axial vibration centrifuge, which relates to the field of centrifuge technology. Background Technology

[0002] A vibrating centrifuge is a solid-liquid separation device, mainly composed of a shell, vibrator, screen basket, spindle box, and drive mechanism. During operation, the screen holes on the screen basket are easily clogged by material, and the vibrator's function is to clear the blockage through vibration. A shortcoming of existing vibrating centrifuges is that while the vibrator is mounted on the shell, and the vibration can be transmitted to the screen basket through the shell, spindle box, and spindle, this vibration is difficult to convert into axial vibration of the screen basket, resulting in a limited clearing effect. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses an axial vibration centrifuge, which adopts the following technical solution: An axial vibration centrifuge includes a housing, a sieve basket, a main shaft box, and a drive mechanism. A front shaft and a rear shaft are coaxially arranged inside the main shaft box. The front shaft is connected to the sieve basket, and the rear shaft is connected to the drive mechanism. The front shaft and the rear shaft are slidably connected by a spline structure. A closed cam groove is provided along the circumference of the front shaft. A roller that cooperates with the cam groove is fixed on the main shaft box. When the rear shaft rotates, the cooperation between the cam groove and the roller causes the front shaft to generate axial reciprocating motion.

[0004] Further improvement to the technical solution: A front sliding bearing and a rear sliding bearing for supporting the front axle are installed inside the spindle box.

[0005] Further improved technical solution: The roller is fixed to the main shaft box by a wheel axle.

[0006] Further improved technical solution: The front axle is a stepped axle that is thinner at the front and thicker at the back, and the cam groove is set on the thicker part of the stepped axle.

[0007] Further improvements to the technical solution: An internal spline is provided in the thicker shaft body of the stepped shaft, an external spline that mates with the internal spline is provided at the front end of the rear shaft body, and a pulley is connected to the rear end of the rear shaft body.

[0008] Further technical improvement: A pair of compression springs are installed inside the spindle box, and the pair of compression springs are respectively installed on both sides of the thicker shaft of the stepped shaft.

[0009] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are: This invention does not require a vibrator; it relies solely on the cooperation between the roller and the cam groove to generate an axial vibration once per revolution of the sieve basket, which significantly improves the unclogging effect of the sieve holes and the efficiency of solid-liquid separation. Attached Figure Description

[0010] Appendix Figure 1 The diagram shown is a structural schematic of an axial vibration centrifuge.

[0011] Appendix Figure 2 The diagram shows the structural schematics of the front and rear axles.

[0012] Appendix Figure 3 The diagram shows the mounting structure of the front axle.

[0013] Appendix Figure 4 The diagram shown is a schematic of the installation structure of the rear axle.

[0014] Appendix Figure 5 The diagram shown is a schematic of the operation of an axial vibration centrifuge.

[0015] In the attached diagram: 1. Housing; 2. Screen basket; 3. Main shaft box; 3.1. Front sliding bearing; 3.2. Rear sliding bearing; 3.3. Rolling bearing; 4. Feed pipe; 5. Front shaft body; 5.1. Cam groove; 5.2. Internal spline; 6. Rear shaft body; 6.1. Pulley; 6.2. External spline; 7. Roller; 8. Axle; 9. Compression spring. Detailed Implementation

[0016] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] An axial vibration centrifuge, relating to the field of centrifuge technology, is mainly used to solve the problem that the sieve basket in the prior art is difficult to generate axial vibration, resulting in unsatisfactory unclogging effect. The composition and working principle of this utility model are described in detail below.

[0018] See attached document Figure 1 The axial vibration centrifuge of this utility model mainly consists of a shell 1, a screen basket 2, a main shaft box 3, and a drive mechanism. A feed pipe 4 is provided on the shell 1, and the outlet end of the feed pipe 4 extends into the screen basket 2.

[0019] To address the problems of insufficient axial vibration and unsatisfactory unclogging effect of existing screen baskets, a front shaft 5 and a rear shaft 6 are coaxially arranged within the main shaft box 3. The front shaft 5 is connected to the screen basket 2, and the rear shaft 6 is connected to the drive mechanism. The front shaft 5 and the rear shaft 6 are slidably connected by a spline structure. A closed cam groove 5.1 is provided along the circumference of the front shaft 5, and a roller 7 that mates with the cam groove 5.1 is fixed on the main shaft box 3.

[0020] See attached document Figure 2 Specifically, the front axle 5 is a stepped shaft that is thinner at the front and thicker at the rear. A cam groove 5.1 is located on the thicker part of the stepped shaft, and an internal spline 5.2 is located within the thicker part of the stepped shaft. The cam groove 5.1 is closed circumferentially and has a cyclic lift of rising-smooth-falling-smooth in the axial direction. In this embodiment, the lift of the cam groove 5.1 is 8mm. An external spline 6.2 that mates with the internal spline 5.2 is located at the front end of the rear axle 6, and a pulley 6.1 is connected to the rear end of the rear axle 6. The pulley 6.1 is connected to a drive mechanism such as a motor via a belt, which can drive the rear axle 6 to rotate.

[0021] In addition, a pair of compression springs 9 are installed inside the main shaft box 3, and the pair of compression springs 9 are respectively installed on both sides of the thicker shaft of the stepped shaft. The function of the pair of compression springs 9 is to form an axial resonance system together with the front shaft body 5, thereby enhancing the unclogging effect on the screen holes.

[0022] See attached document Figure 3-4 During operation, since the front axle 5 needs to both rotate and move axially, a front sliding bearing 3.1 and a rear sliding bearing 3.2 are installed inside the spindle housing 3. The front sliding bearing 3.1 is located at the front end of the front axle 5, and the rear sliding bearing 3.2 is located at the rear end of the front axle 5. To reduce friction and dissipate heat, in this embodiment, the front sliding bearing 3.1 and the rear sliding bearing 3.2 are copper sliding bearings with lubricating oil grooves, and these copper sliding bearings are connected to the lubrication and cooling oil circuit.

[0023] The roller 7 is fixed to the spindle box 3 via the axle 8. The roller 7 can rotate on the axle 8, which can reduce the frictional resistance when the roller 7 and the cam groove 5.1 are in motion. Since the rear axle 6 does not need to move axially, the rear axle 6 is installed in the spindle box 3 via the rolling bearing 3.3 and is slidably connected to the front axle 5 via a spline structure.

[0024] Working principle: Refer to the appendix Figure 5During operation, the drive mechanism drives the rear axle 6 to rotate via pulley 6.1. The rear axle 6, through the engagement of external spline 6.2 and internal spline 5.2, drives the front axle 5 to rotate. Since the roller 7 is fixed to the main shaft box 3 via axle 8 and cannot move, the engagement of the roller 7 with the cam groove 5.1 only causes the front axle 5 to produce axial reciprocating motion. Thus, the front axle 5 rotates while simultaneously performing axial reciprocating motion, and performs one axial reciprocating motion for every revolution of the front axle 5. Because the front axle 5 is coaxially connected to the screen basket 2, the screen basket 2 generates one axial vibration for every revolution of its rotation. The frequency of axial vibration is related to the rotational speed of the screen basket 2; the higher the rotational speed, the greater the vibration frequency, and the better the separation effect and screen hole unclogging effect of the screen basket 2.

[0025] In summary, this invention does not require a vibrator; it relies solely on the cooperation between the roller 7 and the cam groove 5.1 to generate an axial vibration once per revolution of the sieve basket 2, which significantly improves the unclogging effect on the sieve holes.

[0026] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An axial vibration centrifuge, comprising a housing, a sieve basket, a spindle box, and a drive mechanism, characterized in that: The front shaft and the rear shaft are coaxially arranged inside the main shaft box. The front shaft is connected to the screen basket, and the rear shaft is connected to the drive mechanism. The front shaft and the rear shaft are slidably connected by a spline structure. A closed cam groove is arranged along the circumference of the front shaft. A roller that cooperates with the cam groove is fixed on the main shaft box. When the rear shaft rotates, the front shaft will produce axial reciprocating motion through the cooperation of the cam groove and the roller.

2. An axial vibration centrifuge as described in claim 1, characterized in that: The spindle box contains front and rear sliding bearings to support the front axle.

3. An axial vibration centrifuge as described in claim 2, characterized in that: The roller is fixed to the spindle box by a wheel axle.

4. An axial vibration centrifuge as described in claim 1, characterized in that: The front axle is a stepped axle that is thinner at the front and thicker at the back, and the cam groove is located on the thicker part of the stepped axle.

5. An axial vibration centrifuge as described in claim 4, characterized in that: An internal spline is provided in the thicker shaft body of the stepped shaft, an external spline that mates with the internal spline is provided at the front end of the rear shaft body, and a pulley is connected to the rear end of the rear shaft body.

6. An axial vibration centrifuge as described in claim 4, characterized in that: A pair of compression springs are installed inside the spindle box, and the pair of compression springs are respectively installed on both sides of the thicker shaft of the stepped shaft.

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