Top suspension type centrifugal extractor

Abstract

The utility model relates to the field of centrifugal extraction equipment, and discloses a top suspension type centrifugal extractor which comprises a rack, a vertical rotary drum is arranged on the rack, a main shaft is coaxially connected to the rotary drum, a spherical hinge seat support is arranged on the rack on the outer side of the main shaft, a spherical hinge seat is connected to the spherical hinge seat support, and a spherical hinge assembly is arranged in the spherical hinge seat. A ball head of the spherical hinge assembly is connected with a bearing seat, and the main shaft is installed on the bearing seat through a bearing. The utility model can solve the problems that the lower end of the existing top-suspended centrifugal extractor shaft is easy to generate polarization, the bearing is easy to damage, and the operation stability of equipment is low.

Description

Technical Field

[0001] The utility model relates to the field of centrifugal extraction equipment, in particular to a top-suspended centrifugal extractor. Background Art

[0002] In order to ensure stability during operation, traditional cylindrical centrifugal extractors adopt a structure in which bearings are installed at the upper and lower ends of the shaft, and a mechanical seal is provided at the bottom to prevent the liquid from contacting the lower bearing. However, when the material system contains solids or a solid phase is generated during the extraction process, solid impurities can easily damage the sealing surface, causing the mechanical seal to fail, and the mechanical seal must be replaced on time. There are also centrifugal extractors using an upper suspension structure in the prior art. The upper suspension structure only installs the shaft at the upper end through the bearing. If the upper suspension structure is adopted, the bearings are all installed at the same end of the shaft. Although the mechanical seal at the lower end is eliminated, the stability of the lower end of the shaft is reduced during operation. The lower end of the shaft is prone to polarization, and the polarization is transmitted to the bearing at the upper end, which can easily cause bearing damage and reduce the stability of the equipment operation. Utility Model Content

[0003] The utility model aims to provide a top-suspension centrifugal extractor to solve the problem that the lower end of the shaft of the existing top-suspension centrifugal extractor is prone to polarization, which easily leads to bearing damage and low equipment operation stability.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a top-suspended centrifugal extractor, comprising a frame, a vertical drum being provided on the frame, the drum being coaxially connected to a main shaft, a ball joint seat bracket being provided on the frame outside the main shaft, a ball joint seat being connected to the ball joint seat bracket, a ball joint assembly being provided in the ball joint seat, the ball head of the ball joint assembly being connected to a bearing seat, and the main shaft being mounted on the bearing seat through a bearing.

[0005] Preferably, as an improvement, the bearing seat is also connected to a horizontal balance plate, and a plurality of through holes are evenly distributed on the balance plate around the axis of the bearing seat. A pull rod is connected to the ball joint seat and passes vertically through the through hole. The end of the pull rod is connected to a pressure plate, and an elastic member is connected between the pressure plate and the balance plate.

[0006] Preferably, as an improvement, the balance plate is located above the ball joint seat, a hole for the main shaft to pass through is provided in the middle of the balance plate, and the elastic member is a spring.

[0007] Preferably, as an improvement, the spring is a plurality of rubber springs stacked vertically, the rubber springs are sleeved on the pull rod, and a partition sleeved on the pull rod is provided between adjacent rubber springs.

[0008] Preferably, as an improvement, the main shaft is mounted on the bearing seat via two sets of bearings, and the two sets of bearings are respectively located on the upper and lower sides of the ball joint assembly.

[0009] Preferably, as an improvement, the axis of the bearing seat passes through the center of the ball head.

[0010] Preferably, as an improvement, a vertically penetrating mounting hole is provided in the middle of the ball head, the bearing seat is in the shape of a circular tube, and the outer circumferential surface of the bearing seat is interference fit with the mounting hole.

[0011] The principles and advantages of this solution are as follows: In actual application, the frame, drum, heavy liquid chamber, and light liquid chamber of the top-hung centrifugal extractor are identical to those of the prior art. The frame serves as the overall supporting structure, and the main shaft, connected to the drum as the power input, drives the drum to rotate under power input for centrifugal extraction. The main shaft adopts a top-hung mounting structure, with two sets of bearings mounted on the bearing seat at the upper end. The bearing seat is supported by a ball joint assembly, which is supported by a ball joint seat, which is supported by a ball joint seat bracket, which is supported by the frame. The balance plate is connected to the bearing seat to provide bottom support for the rubber spring, and the pull rod connected to the ball joint seat provides top support for the rubber spring via a pressure plate at the end. The ball joint assembly provides swing freedom for the bearing seat and main shaft, and the balance plate, rubber spring, pull rod, and ball joint seat provide swing cushioning, allowing the entire shaft system to have a certain amount of swing margin. If the drum of the top-hung centrifugal extractor swings significantly during operation, the swing acts on the main shaft and is transmitted to the bearings and bearing seats. The swing of the bearing seats drives the balance plate and the ball head to deflect. The rubber spring on the opposite side of the balance plate deflects and absorbs and alleviates the deflection by deformation. The ball head rotates in the ball socket to absorb the deflection, thereby achieving automatic adjustment during operation, so that the main shaft, bearings, and bearing seats do not absorb and bear the deflection force, avoiding damage to the bearings, main shaft, and bearing seats due to shaft swing, thereby improving the stability of the top-hung centrifugal extractor during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0013] The following is further described in detail through specific implementation methods:

[0014] The reference numerals in the drawings of the specification include: frame 1, drum 2, main shaft 3, bearing seat 4, ball joint bracket 5, ball joint seat 6, ball joint assembly 7, balance plate 8, support rod 9, pull rod 10, rubber spring 11, partition 12, and pressure plate 13.

[0015] The embodiment is basically as shown in the attached Figure 1As shown: A top-suspended centrifugal extractor includes a frame 1, on which a vertical drum 2 is provided, and the drum 2 is coaxially connected to a main shaft 3. The specific connection and positional relationship between the main shaft 3, the frame 1, and the drum 2 are prior art and will not be described here. The frame 1 outside the main shaft 3 is bolted with a ball joint bracket 5 surrounding the outside of the upper end of the main shaft 3, and the ball joint bracket 5 is bolted with a ball joint seat 6 surrounding the outside of the upper end of the main shaft 3. A ball joint assembly is provided in the ball joint seat 6. The ball joint assembly adopts the existing technical structure and has a ball socket and a ball head. The middle of the ball head is provided with a vertically penetrating mounting hole. A cylindrical bearing seat 4 is interference fit in the mounting hole, and the axis of the bearing seat 4 passes through the center of the ball head. The upper end of the main shaft 3 is mounted on the bearing seat 4 through two sets of bearings, and the two sets of bearings are respectively located on the upper and lower sides of the ball joint assembly.

[0016] A balancing plate 8 is welded to the upper end of the bearing seat 4, horizontally surrounding the bearing seat 4. The balancing plate 8 is located above the ball joint seat 6. The balancing plate 8 has four through-holes evenly distributed around the axis of the bearing seat 4. Four horizontal support rods 9 are welded to the side ends of the ball joint seat 6, evenly distributed around the ball joint seat 6. A pull rod 10 extending vertically through the through-hole is threadedly connected to the support rod 9. A pressure plate 13 is threadedly connected to the end of the pull rod 10. An elastic member is connected between the pressure plate 13 and the balancing plate 8. The elastic member is three vertically stacked rubber springs 11, which are mounted on the pull rods 10. A partition 12, which is mounted on the pull rods 10, is located between adjacent rubber springs 11.

[0017] The specific implementation process is as follows: If the drum 2 experiences significant swing during operation of the top-hung centrifugal extractor, this swing acts on the main shaft 3, and at the upper end of the main shaft 3, on the bearing and bearing seat 4. The bearing seat 4 is supported by the ball joint of the ball joint assembly 7. The swing of the bearing seat 4 acts on the ball joint, which absorbs the swing by rotating relative to the ball socket, thereby preventing the bearing from being directly affected by the swing and causing damage. The bearing seat 4 also swings on the balance plate 8, causing it to swing synchronously. The swing of the balance plate 8 squeezes the rubber spring 11 on one or more tie rods 10. The rubber spring 11 is restrained by the pressure plate 13 at the upper end of the tie rod 10, causing the rubber spring 11 to deform under pressure, and the deformation of the rubber spring 11 absorbs the swing. The balance plate 8 is reset under the action of the rubber spring 11 to restore its deformation, and the ball joint assembly 7 is combined to realize the reset of the bearing seat 4 and the main shaft 3, so as to realize automatic adjustment during the operation of the equipment, and avoid the shaft system swing directly acting on the bearing supporting the main shaft 3 and causing damage thereto. In this way, the ball joint structure, the balance plate 8 and the rubber spring 11 make the entire shaft system have a certain swing margin, thereby improving the stability of the upper-suspended centrifugal extractor during operation, and enabling more stable centrifugal extraction of materials.

[0018] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A top-hung centrifugal extractor comprising a frame, a vertical drum disposed on the frame, the drum being coaxially connected to a main shaft, characterized in that: A ball joint bracket is provided on the frame outside the main shaft, a ball joint bracket is connected to the ball joint seat, a ball joint assembly is provided in the ball joint seat, the ball head of the ball joint assembly is connected to the bearing seat, and the main shaft is installed on the bearing seat through the bearing.

2. The top-suspended centrifugal extractor according to claim 1, characterized in that: The bearing seat is also connected to a horizontal balance plate, which has multiple through holes evenly distributed around the axis of the bearing seat. The ball joint seat is connected to a pull rod that passes vertically through the through hole. The end of the pull rod is connected to a pressure plate, and an elastic part is connected between the pressure plate and the balance plate.

3. The top-suspended centrifugal extractor according to claim 2, characterized in that: The balance plate is located above the ball joint seat, a hole for the main shaft to pass through is provided in the middle of the balance plate, and the elastic member is a spring.

4. The top-suspended centrifugal extractor according to claim 3, characterized in that: The springs are multiple rubber springs stacked vertically. The rubber springs are sleeved on the pull rods. A partition sleeved on the pull rods is provided between adjacent rubber springs.

5. The top-suspended centrifugal extractor according to claim 4, characterized in that: The main shaft is mounted on the bearing seat through two sets of bearings, and the two sets of bearings are respectively located on the upper and lower sides of the ball joint assembly.

6. The top-suspended centrifugal extractor according to claim 5, characterized in that: The axis of the bearing seat passes through the center of the ball head.

7. The top-suspended centrifugal extractor according to claim 6, characterized in that: A vertically penetrating mounting hole is provided in the middle of the ball head. The bearing seat is in a circular tubular shape, and the outer circumferential surface of the bearing seat is interference fit with the mounting hole.

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