A top suspension centrifuge drum anti-yaw device

Abstract

A kind of upper suspension centrifuge drum anti-yaw device, belong to upper suspension centrifuge technical field, it is characterized in that, including: upper suspension centrifuge (1), automatic adjusting dynamic balancing mechanism (2), rough centering mechanism (3), hard centering mechanism (4), detection device (5) and control device;The upper suspension centrifuge (1) is equipped with fixed cylinder seat (101), machine shell fixed plate (102) and main shaft (103);Automatic adjusting dynamic balancing mechanism (2) is fixedly installed on main shaft (103);Rough centering mechanism (3) is fixedly installed on fixed cylinder seat (101) corresponding main shaft (103);Hard centering mechanism (4) is installed on machine shell fixed plate (102);The control device is used to control the operation of the entire upper suspension centrifuge drum anti-yaw device except itself;The application can effectively prevent the upper suspension centrifuge drum yaw, and the damage to main shaft is smaller in the adjustment process, improve the service life of main shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of overhung centrifuge, and particularly relates to a drum anti-yaw device of overhung centrifuge. BACKGROUND

[0002] The overhung centrifuge is an advanced intermittent gravity, mechanical or artificial unloading centrifuge, and the series of centrifuges are advanced in design, reasonable in structure, stable in operation, simple in operation, high in production efficiency, large in processing capacity and little in maintenance amount, but have certain defects: 1, the main shaft of the centrifuge is a high-strength and high-rotation shaft, so that even if the centering work is well done in the early stage, the main shaft will be eccentric in the later stage due to the operation process, thereby driving the drum to yaw and affecting the working state; 2, the overhung centrifuge is large in structure and inconvenient to disassemble, so that even if the main shaft drives the drum to be eccentric, it can only be used continuously, which is inconvenient for production; 3, the drum anti-yaw mainly needs to center the main shaft, and the existing technology can use iron and iron collision to clamp the shaft, but the absence of early adjustment and rough centering will cause the shaft to be bent and deformed, thereby greatly reducing the utilization rate.

[0003] Therefore, it is urgent to invent a drum anti-yaw device of overhung centrifuge. SUMMARY

[0004] In order to solve the problems in the background art, the present application provides a drum anti-yaw device of overhung centrifuge, and the specific technical scheme is as follows:

[0005] The drum anti-yaw device of overhung centrifuge comprises an overhung centrifuge, an automatic adjusting dynamic balance mechanism, a rough centering mechanism, a hard centering mechanism, a detection device and a control device; the overhung centrifuge is provided with a fixed cylinder seat, a machine shell fixing plate and a main shaft; the automatic adjusting dynamic balance mechanism is fixedly installed on the main shaft; the rough centering mechanism is fixedly installed on the fixed cylinder seat corresponding to the main shaft; the hard centering mechanism is installed on the machine shell fixing plate; and the control device is used for controlling the operation of the entire drum anti-yaw device of overhung centrifuge except itself.

[0006] Further, the automatic adjusting dynamic balance mechanism is provided with a bearing cylinder, a rotating cylinder, a ratchet wheel, a dust cover and a locking mechanism; the dust cover is fixedly installed on the main shaft; the bearing cylinder is slidably installed on the rotating cylinder in the axial direction of the main shaft and is driven by the motor fixedly installed on the dust cover; the rotating cylinder is rotatably installed on the dust cover; the inner side of the rotating cylinder is provided with a circumferential and continuous V-shaped sliding groove, and the outer side is provided with a support rod, and the counterweight is slidably installed on the support rod; the counterweight is driven by the air cylinder fixedly installed on the support rod; the bearing cylinder is provided with a plurality of limiting columns corresponding to the number of V-shaped sliding grooves, and the limiting columns are slidably installed in the V-shaped sliding grooves of the rotating cylinder and drive the rotating cylinder to rotate by sliding in the V-shaped sliding grooves; the motor rotates one circle, which just drives the limiting column on the bearing cylinder to slide through one V-shaped sliding groove; the locking mechanism is installed on the dust cover corresponding to the rotating cylinder and is used for controlling the rotating direction of the rotating cylinder; the dust cover, the bearing cylinder, the rotating cylinder and the main shaft are coaxially arranged.

[0007] Further, the locking mechanism comprises a ratchet wheel and a directional baffle; the ratchet wheel is fixedly installed on the outer side of the rotating cylinder; the two directional baffles are symmetrically and rotatably installed on the dust cover and are driven by the motor three fixedly installed on the dust cover, and the two directional baffles intermittently cooperate with the ratchet wheel to control the rotating direction of the ratchet wheel.

[0008] Further, the rough centering mechanism is provided with a moving frame, a centering block, a rotating frame and a limiting disc; the moving frame, the rotating frame and the limiting disc are all provided with a through hole for the main shaft to pass through, and the rotating frame, the limiting disc and the main shaft are coaxially arranged; the moving frame is fixedly installed on the fixed cylinder seat; the rotating frame is rotatably installed on the moving frame and is driven by the motor two fixedly installed on the moving frame; the rotating frame is provided with at least three gradually changing sliding grooves which are uniformly distributed, and one end of the gradually changing sliding groove gradually approaches the position of the main shaft axis; the limiting disc is fixedly installed on the moving frame and is located above the rotating frame, and is provided with a radial sliding groove corresponding to the gradually changing sliding groove.

[0009] The number of the centering blocks is the same as the number of the radial sliding grooves on the limiting disc; the upper ends of the plurality of centering blocks are slidably installed in the radial sliding grooves of the limiting disc, and the bottom ends are slidably installed in the gradually changing sliding grooves on the corresponding rotating frame.

[0010] Further, the hard centering mechanism is provided with a rolling bearing, a sliding block, a support rod, a rotating plate and a driving device; the second fixed frame is fixedly installed on the fixed plate of the machine shell; the second fixed frame is provided with a through hole for the main shaft to pass through; the four sliding blocks are radially and slidably installed on the second fixed frame corresponding to the main shaft and are synchronously driven by the three air cylinders fixedly installed on the second fixed frame; the four rolling bearings are horizontally slidably and rotatably installed on the moving frame and are driven by the two driving devices installed on the moving frame; the sliding block is provided with a groove corresponding to the rolling bearing, and the rolling bearing and the sliding block are intermittently abutted.

[0011] Further, the driving device comprises a pushing wheel, a fixed plate, a rotating wheel and a Z-shaped support; two fixed plates are respectively corresponding to two rolling bearings and are fixedly installed on the moving frame; the fixed plate is provided with a supporting rod; two Z-shaped supports are cross-rotatingly installed on the moving frame in a scissor shape; one end of each of the two Z-shaped supports corresponding to the rolling bearing is fixedly installed with a magnet; the other end of each of the two Z-shaped supports is sleeved and installed on the supporting rod of the fixed plate and is driven by the cylinder two fixedly installed on the moving frame.

[0012] Further, the detection device comprises a dynamic balance detection machine for detecting the deflection of the main shaft.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] (1) The present application can effectively prevent the deflection of the drum of the overhung centrifuge, and the damage to the main shaft during adjustment is small, thereby prolonging the service life of the main shaft.

[0015] (2) The present application can automatically adjust the dynamic balance mechanism to adjust the dynamic balance of the main shaft without disassembly, thereby continuously reducing the deflection of the main shaft and adjusting the deflection of the drum.

[0016] (3) The present application can center the main shaft after the automatic adjustment of the dynamic balance mechanism to the optimal state, and will not cause bumping damage to the main shaft.

[0017] (4) The present application can forcibly position the main shaft to prevent the deflection of the main shaft, and after the adjustment of the automatic adjustment of the dynamic balance mechanism and the coarse centering mechanism, the damage of the hard centering mechanism to the main shaft can be reduced, thereby prolonging the service life of the main shaft. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figures 1-2 is a schematic diagram of the assembly structure of the present application;

[0019] Figure 3 is a schematic diagram of the cross-sectional structure of the present application;

[0020] Figures 4-7 is a schematic diagram of the assembly structure of the automatic adjustment dynamic balance mechanism of the present application;

[0021] Figures 8-9 is a schematic diagram of the assembly structure of the automatic adjustment dynamic balance mechanism and the main shaft of the present application;

[0022] Figure 10 is a schematic diagram of the assembly structure of the fixed cylinder seat, the main shaft, the coarse centering mechanism and the hard centering mechanism of the present application;

[0023] Figure 11 Assembling structure schematic diagram of fixed cylinder seat, main shaft and coarse centering mechanism of the present application;

[0024] Figure 12 Assembling structure schematic diagram of coarse centering mechanism of the present application;

[0025] Figure 13 Structure schematic diagram of rotating frame and limiting disc of the present application;

[0026] Figure 14 Assembling structure schematic diagram of rotating frame, push block and centering block of the present application;

[0027] Figure 15 Assembling structure schematic diagram of main shaft and hard centering mechanism of the present application;

[0028] Figures 16-20 Assembling structure schematic diagram of hard centering mechanism of the present application.

[0029] In the figure: 1 - overhung centrifuge (101 - fixed cylinder seat, 102 - machine shell fixed plate, 103 - main shaft); 2 - automatic adjusting dynamic balancing mechanism (201 - motor, 202 - ratchet wheel, 203 - positioning rod, 204 - bearing cylinder, 205 - rotating cylinder, 206 - ratchet wheel, 207 - air cylinder, 208 - counterweight, 209 - directional baffle, 210 - ratchet wheel two, 211 - dust cover), 3 - coarse centering mechanism (301 - motor two, 302 - gear two, 303 - moving frame, 304 - push block, 305 - centering block, 306 - rotating frame, 307 - limiting disc); 4 - hard centering mechanism (401 - air cylinder two, 402 - push wheel, 403 - fixed plate, 404 - rotating wheel, 405 - Z-shaped support, 406 - magnet, 407 - rolling bearing, 408 - sliding block, 409 - air cylinder three, 410 fixed frame, 411 - L-shaped support rod, 412 - rotating plate, 413 - fixed frame two), 5 - detection device. DETAILED DESCRIPTION

[0030] In order to make the person in this technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below, obviously, the described embodiment is only a part of the embodiment of the present application, not all. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application. EMBODIMENT

[0031] As Figures 1-3As shown in the figure, a kind of upper suspension centrifuge drum anti-oscillation device, comprising: upper suspension centrifuge 1, automatic adjusting dynamic balancing mechanism 2, rough centering mechanism 3, hard centering mechanism 4, detection device 5 and control device;Upper suspension centrifuge 1 is equipped with fixed cylinder seat 101, casing fixed plate 102 and main shaft 103;Automatic adjusting dynamic balancing mechanism 2 is fixedly installed on the main shaft 103;Rough centering mechanism 3 is fixedly installed on the fixed cylinder seat 101 corresponding to the main shaft 103;Hard centering mechanism 4 is installed on the casing fixed plate 102;Control device is used to control the operation of the entire upper suspension centrifuge drum anti-oscillation device except itself.

[0032] Specifically, as shown in the figure, Figure 3 Detection device 5 includes dynamic balancing detection machine, induction end on dynamic balancing detection machine is equipped with piezoelectric sensor, piezoelectric sensor is fixedly installed on casing fixed plate 102, through high-speed operation of main shaft 103, piezoelectric sensor can detect the degree of deflection of main shaft 103, and then display the result on the display screen outside the dynamic balancing detection equipment;According to the display result of dynamic balancing detection machine, automatic adjusting dynamic balancing mechanism 2 starts to work.

[0033] Specifically, as shown in the figure, Figures 4-7 Automatic adjusting dynamic balancing mechanism 2 is equipped with bearing cylinder 204, rotating cylinder 205, ratchet wheel 206, dust cover 211;Dust cover 211, bearing cylinder 204, rotating cylinder 205 and main shaft 103 are coaxially arranged;Dust cover 211 is fixedly installed on the main shaft 103, and rotates together with the main shaft 103;Dust cover 211 is rotatably installed with rotating cylinder 205, and the inner side of rotating cylinder 205 is provided with a circumferential and continuous V-shaped sliding groove;The outer side of the bottom of bearing cylinder 204 is provided with a plurality of limiting columns corresponding to the number of V-shaped sliding grooves, and the limiting columns slide in the V-shaped sliding grooves on rotating cylinder 205;In order to make the limiting column slide more smoothly in the continuous V-shaped sliding groove, the vertex of the sharp end of the continuous V-shaped sliding groove is arc-shaped round corner, which can make the limiting column more smoothly slide from one V-shaped sliding groove into the next connected V-shaped sliding groove;Automatic adjusting dynamic balancing mechanism 2 is also provided with motor 201 and positioning rod 203;Positioning rod 203 is vertically fixedly installed on dust cover 211, bearing cylinder 204 is slidably installed on positioning rod 203, which can ensure that bearing cylinder 204 can only move up and down relative to dust cover 211, and cannot slide relatively;Motor 201 is fixedly installed on dust cover 211, motor 201 output end is fixedly connected with ratchet wheel 202, ratchet wheel 202 abuts against the upper end of bearing cylinder 204, and drives bearing cylinder 204 to slide up and down;Motor 201 rotates one round, drives ratchet wheel 202 to rotate one round, and ratchet wheel 202 rotates one round just drives the limiting column on bearing cylinder 204 to slide one V-shaped sliding groove in the continuous V-shaped sliding groove on rotating cylinder 205;

[0034] The motor 201 rotates to drive the dial 202 to rotate, and then drive the bearing cylinder 204 to slide up and down along the positioning rod 203; the limiting column on the bearing cylinder 204 and the V-shaped sliding groove on the rotating cylinder 205 are in sliding fit, the limiting column slides up and down to drive the V-shaped sliding groove to move, thereby driving the rotating cylinder 205 to rotate on the dust cover 211; the outer side of the upper end of the rotating cylinder 205 is provided with a support rod, a horizontal part of the support rod is slidably installed with a counterweight 208, and the counterweight 208 is driven by the cylinder 207 fixedly installed on the support rod to adjust the horizontal position of the counterweight 208, and a vertical end of the support rod is slidably installed on the dust cover 211; according to the display result of the dynamic balance detection machine for the deflection degree of the main shaft 103, the motor 201 is started to drive the rotating cylinder 205 to rotate to the corresponding angular position, and then the cylinder 207 is started to adjust the horizontal position of the counterweight 208; by moving the position of the counterweight 208, the center of gravity of the automatic adjustment dynamic balance mechanism 2 is changed, the automatic adjustment dynamic balance mechanism 2 is fixedly installed on the main shaft 103, and the deflection of the main shaft 103 is offset; and then the deflection of the main shaft 103 is adjusted to make the main shaft 103 in the optimal state.

[0035] As a specific embodiment of the present embodiment, as shown in Figures 4-5 In order to control the rotating direction of the rotating cylinder 205, the dust cover 211 is rotatably installed with a locking mechanism, the locking mechanism includes a ratchet wheel 206 and a directional baffle 209; the ratchet wheel 206 is fixedly installed on the outer side of the rotating cylinder 205; two directional baffles 209 are V-shaped and rotatably installed on the dust cover 211, and the installation position is located at one end close to the two directional baffles 209; the other end of the two directional baffles 209 is intermittently matched with the ratchet wheel 206; the dial two 210 is rotatably installed in the middle of the one end close to the two directional baffles 209, and the dial two 210 is intermittently matched with the two directional baffles 209; the dust cover 211 is provided with a fixed frame, the motor three is fixedly installed on the fixed frame, and the output end of the motor three is fixedly connected with the dial two 210; one end of the two directional baffles 209 is elastically connected with the corresponding end of the fixed frame by a compression spring;

[0036] Under the action of compression spring, one end of the two directional baffle 209 is against the ratchet wheel 206, at this time the ratchet wheel 206 cannot rotate, when the rotating cylinder 205 needs to rotate clockwise, the motor three starts, drives the dial wheel two 210 to rotate counterclockwise, pushes the rear directional baffle 209 to rotate, makes the end of the directional baffle 209 matched with the ratchet wheel 206 away from the ratchet wheel, at this time, the rotating cylinder 205 can only rotate clockwise, cannot rotate counterclockwise, when the rotating cylinder 205 needs to rotate counterclockwise, the motor three reverses, drives the dial wheel two 210 to rotate clockwise, pushes the end of the front directional baffle 209 away from the ratchet wheel 206, the rear directional baffle 209 resets under the action of compression spring, and abuts against the ratchet wheel 206, at this time, the rotating cylinder 205 can only rotate counterclockwise, cannot rotate clockwise.

[0037] The rotating direction of the rotating cylinder 205 can be accurately controlled through the locking mechanism, and the automatic dynamic balance adjusting mechanism 2 can further quickly and accurately adjust the main shaft 103.

[0038] After the automatic dynamic balance adjusting mechanism 2 adjusts the main shaft 103 to the optimal state, it needs to be further centered; in order to further center the main shaft 103, as a specific embodiment of the present embodiment, as shown in Figures 10-14 The moving frame 303, the centering block 305, the rotating frame 306 and the limiting disc 307 are arranged on the coarse centering mechanism 3; the moving frame 303, the rotating frame 306 and the limiting disc 307 are all provided with through holes for the main shaft 103 to pass through, and the rotating frame 306, the limiting disc 307 and the main shaft 103 are coaxially arranged; the moving frame 303 is fixedly installed on the fixed cylinder seat 101;

[0039] The rotating frame 306 is rotatably installed on the moving frame 303; one side of the rotating frame 306 is provided with a rack, and the upper end is provided with three gradually changing sliding grooves, and one end of the gradually changing sliding grooves gradually approaches the axis position of the main shaft 103; the motor two 301 is fixedly installed on the moving frame 303, the output end of the motor two 301 is fixedly connected with the gear two 302, and the gear two 302 is engaged with the rack on the rotating frame 306, and the rotating frame 306 is driven to rotate by the motor two 301;

[0040] Specifically, the limiting disc 307 is also fixedly installed on the moving frame 303; the limiting disc 307 is located above the rotating frame 306, and is provided with three radial sliding grooves corresponding to the three gradually changing sliding grooves respectively; each radial sliding groove is slidably installed with a push block 304, the lower end of the push block 304 is slidably installed in the corresponding gradually changing sliding groove, the push block 304 is slidably installed with the centering block 305 on the side opposite to the main shaft 103, and the centering block 305 and the push block 304 are elastically connected through the spring; the side of the centering block 305 corresponding to the main shaft 103 is provided with a polyurethane conformal pad, and the polyurethane conformal pad is a soft material.

[0041] The motor two 301 starts, drives the gear two 302 to rotate, further drives the rotating frame 306 to rotate, the rotating frame 306 rotates and pushes the three push blocks 304 to move towards the shaft center, in turn pushes the three centering blocks 305 to clamp the main shaft 103, and the main shaft 103 is roughly centered. In the process of centering, because the centering block 305 and the push block 304 are elastically connected, and the side of the centering block 305 in contact with the main shaft 103 is provided with a polyurethane conformal pad, so that the main shaft 103 is not damaged by hard impact; through the above process, a simple rough centering can be made on the basis of the automatic adjustment dynamic balance mechanism 2 adjustment, to provide a reliable basis for the next step.

[0042] Specifically, as shown in Figures 15-20 The hard centering mechanism 4 is provided with a rolling bearing 407; the four rolling bearings 407 are uniformly distributed in the radial direction of the main shaft 103 and are horizontally slidably and rotatably installed at the bottom end of the moving frame 303; in order to adjust the position of the four rolling bearings 407, the hard centering mechanism 4 is provided with two driving devices, each driving device controls the movement of two rolling bearings 407;

[0043] Specifically, as shown in Figures 17-18 The driving device includes a fixed plate 403, a rotating wheel 404 and a Z-shaped support 405; two fixed plates 403 are respectively fixedly installed on the moving frame 303 corresponding to the two rolling bearings 407; the fixed plate 403 is provided with a support rod; two Z-shaped supports 405 are cross-rotatably installed on the moving frame 303, in a scissors shape, and the installation position is the intersection position of the two Z-shaped supports 405; one end of each Z-shaped support 405 corresponding to the rolling bearing 407 is fixedly installed with a magnet, which is used to drive the rolling bearing 407 to slide on the moving frame 303; the other end of the two Z-shaped supports 405 is provided with a long slide, which is sleeved on the support rod of the fixed plate 403, and is elastically connected with one end of the corresponding fixed plate 403 through a spring, and the long slide is long enough to enable the two Z-shaped supports 405 to slide and rotatably installed on the support rod of the fixed plate 403; each Z-shaped support 405 is rotatably installed with a rotating wheel 404 near one end of the fixed plate 403; two air cylinders two 401 are fixedly installed on the moving frame 303 and correspond to the Z-shaped supports 405 on the fixed plate 403; the output end of the air cylinder two 401 is fixedly connected with a push wheel 402; the push wheel 402 abuts against the two rotating wheels 404;

[0044] The cylinder two 401 is started, drives the pushing wheel 402 to move, the pushing wheel 402 pushes two rotating wheels 404 and moves left and right, further drives two Z-shaped supports 405 to rotate, thereby drives two rolling bearings 407 to move to the main shaft 103 and is resisted on the main shaft 103;When the cylinder two 401 resets, the spring between the fixed plate 403 and the Z-shaped support 405 resets the Z-shaped support 405, thereby drives two rolling bearings 407 to reset;

[0045] Specifically, as shown in Figures 19-20 The hard centering mechanism 4 is further provided with a sliding block 408, an L-shaped support rod 411 and a rotating plate 412;The fixed frame two 413 is fixedly installed on the casing fixed plate 102;The fixed frame two 413 is provided with a through hole for the main shaft 103 to pass through;Four sliding blocks 408 are uniformly and slidably installed on the fixed frame two 413 corresponding to the main shaft 103, and the four sliding blocks 408 correspond to the rolling bearings 407 respectively;The sliding block 408 is provided with a groove corresponding to the rolling bearing 407, and the rolling bearing 407 can rotate in the groove;Two cylinder threes 409 are fixedly installed on the lower end surface of the fixed frame two 413, the output ends of the two cylinder threes 409 are fixedly installed with a fixed plate 410, the two ends of the fixed plate 410 are fixedly connected with the output ends of the two cylinder threes 409 respectively, and the middle is fixedly connected with a sliding block 408;The sliding block 408 is driven by the cylinder three 409 to slide on the fixed frame two 413;Further, in order to simultaneously drive the four sliding blocks 408 to move by the cylinder three 409, the rotating plate 412 is rotatably installed on the fixed frame two 413;The rotating plate 412 is provided with a through hole two for the main shaft 103 to pass through, and the through hole two is coaxial with the main shaft 103;The rotating plate 412 is connected with the four sliding blocks 408 through the four L-shaped support rods 411 uniformly distributed thereon;One end of each L-shaped support rod 411 is rotatably installed on one side of the rotating plate 412, and the other end is rotatably connected to one sliding block 408;The cylinder three 409 is started, drives the corresponding sliding block 408 to move, the sliding block 408 drives the corresponding L-shaped support rod 411 to move, further drives the rotating plate 412 to rotate, and the rotating plate 412 drives the other three L-shaped support rods 411 to move, so that the four sliding blocks 408 move synchronously under the drive of the cylinder three 409;

[0046] The four sliding blocks 408 abut against the four rolling bearings 407;The cylinder three 409 is started, the cylinder two 401 is started, and the four rolling bearings 407 are synchronously moved towards the main shaft 103, the main shaft 103 is centered, the rolling bearing 407 can rotate in the groove in the sliding block 408, and the rotation of the main shaft 103 is not affected;The rolling bearing 407 is pushed by the sliding block 408 to hard center the main shaft 103, the force is greater, and the main shaft 103 can be centered more accurately,

[0047] Working principle:

[0048] When the initial position, the rolling bearing 407 away from the main shaft 103;

[0049] First, the suspension centrifuge starts, the main shaft 103 rotates, the dynamic balance detector starts, the main shaft 103 deflection is detected, according to the display result of the dynamic balance detector, the motor 201 is started, the rotating cylinder 205 is rotated to the appropriate angle, the cylinder 207 is started, the position of the counterweight 208 is adjusted, the main shaft 103 is in the optimal state, and then the suspension centrifuge is closed;

[0050] Second, after the main shaft 103 is in the optimal state, the motor 301 is started, the centering block 305 clamps the main shaft 103, and the coarse centering is carried out;

[0051] Third, the cylinder 401 is started, the cylinder 409 is started, and the rolling bearing 407 clamps the main shaft 103, and the hard centering is carried out.

[0052] The above is only a preferred embodiment of the specific implementation, but the protection scope of the embodiment is not limited to this, any person skilled in the art in the technical range disclosed by the embodiment, according to the technical scheme and the inventive concept of the embodiment, equivalent replacement or change, should be covered in the protection scope of the embodiment.

Claims

1. An anti-swing device for a suspended centrifuge bowl, characterized in that, The application relates to an overhung centrifuge (1), an automatic adjusting dynamic balance mechanism (2), a rough centering mechanism (3), a hard centering mechanism (4), a detection device (5) and a control device. The automatic adjusting dynamic balance mechanism (2) is provided with a bearing cylinder (204), a rotating cylinder (205), a ratchet wheel (206), a dust cover (211) and a locking mechanism; the dust cover (211) is fixedly installed on the main shaft (103); the bearing cylinder (204) is slidably installed on the rotating cylinder (205) in the axial direction of the main shaft (103) and is driven by a motor (201) fixedly installed on the dust cover (211); the rotating cylinder (205) is rotatably installed on the dust cover (211); the rotating cylinder (205) is provided with a circumferential and continuous V-shaped sliding groove on the inner side and is provided with a supporting rod on the outer side, and a counterweight (208) is slidably installed on the supporting rod; the counterweight (208) is driven by a cylinder (207) fixedly installed on the supporting rod; the bearing cylinder (204) is provided with a plurality of limiting columns corresponding to the V-shaped sliding grooves, the limiting columns are slidably installed in the V-shaped sliding grooves of the rotating cylinder (205) and drive the rotating cylinder (205) to rotate by sliding in the V-shaped sliding grooves; the motor (201) rotates one circle and just drives the limiting column on the bearing cylinder (204) to slide through one V-shaped sliding groove; the locking mechanism is installed on the dust cover (211) corresponding to the rotating cylinder (205) and is used for controlling the rotating direction of the rotating cylinder (205); the dust cover (211), the bearing cylinder (204), the rotating cylinder (205) and the main shaft (103) are coaxially arranged; The rough centering mechanism (3) is provided with a moving frame (303), a centering block (305), a rotating frame (306) and a limiting disc (307); the moving frame (303), the rotating frame (306) and the limiting disc (307) are all provided with through holes for the main shaft (103) to pass through, and the rotating frame (306), the limiting disc (307) and the main shaft (103) are coaxially arranged; the moving frame (303) is fixedly installed on the fixed cylinder seat (101); the rotating frame (306) is rotatably installed on the moving frame (303) and is driven by a motor two (301) fixedly installed on the moving frame (303); the rotating frame (306) is provided with at least three gradually-changing sliding grooves which are uniformly distributed, and one end of the gradually-changing sliding groove gradually approaches the position of the axis of the main shaft (103); the limiting disc (307) is fixedly installed on the moving frame (303) and is located above the rotating frame (306) and is provided with a radial sliding groove corresponding to the gradually-changing sliding groove; ​ The number of the centering blocks (305) is same as the number of the radial sliding slots on the limiting disc (307); the upper ends of the plurality of centering blocks (305) are respectively slidably installed in the radial sliding slots of the limiting disc (307), and the bottom ends are slidably installed in the gradually-changing sliding slots on the corresponding rotating frame (306); The hard centering mechanism (4) is provided with rolling bearings (407), sliding blocks (408), supporting rods (411), rotating plates (412) and driving devices; the fixed frame two (413) is fixedly installed on the machine shell fixed plate (102); the fixed frame two (413) is provided with a through hole for the main shaft (103) to pass through; the four sliding blocks (408) are uniformly distributed radially and slidably installed on the fixed frame two (413) corresponding to the main shaft (103), and are synchronously driven by the air cylinder three (409) fixedly installed on the fixed frame two (413); the four rolling bearings (407) are horizontally slidably and rotatably installed on the moving frame (303), and are driven by the two driving devices installed on the moving frame (303); the sliding block (408) is provided with a groove corresponding to the rolling bearing (407), and is intermittently abutted with the rolling bearing (407).

2. The anti-rolling device for a suspended centrifuge bowl according to claim 1, characterized in that: The locking mechanism includes a ratchet wheel (206) and a directional baffle (209); the ratchet wheel (206) is fixedly installed on the outside of the rotating cylinder (205); the two directional baffles (209) are symmetrically and rotatably installed on the dust cover (211), and are driven by the motor three fixedly installed on the dust cover (211), and the two directional baffles (209) are intermittently matched with the ratchet wheel (206) to control the rotating direction of the ratchet wheel (206).

3. The anti-sway device for a suspended centrifuge bowl as claimed in claim 1, characterized in that: The driving device includes a pushing wheel (402), a fixed plate (403) and a Z-shaped support (405); the two fixed plates (403) correspond to the two rolling bearings (407) respectively, and are fixedly installed on the moving frame (303); the fixed plate (403) is provided with a supporting rod; the two Z-shaped supports (405) are cross-rotatably installed on the moving frame (303) in a scissors shape; the ends corresponding to the rolling bearings (407) of the two Z-shaped supports (405) are fixedly installed with magnets; the other ends of the two Z-shaped supports (405) are sleeved and installed on the supporting rods of the fixed plate (403), and are driven by the air cylinder two (401) fixedly installed on the moving frame (303).

4. The anti-sway device for a suspended centrifuge bowl as claimed in claim 1, characterized in that: The detection device (5) includes a dynamic balance detection machine for detecting the deflection of the main shaft (103).

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