Screen basket opening and closing pushing device of top suspension type scraper discharging centrifugal machine

Abstract

The utility model discloses a pushing device for opening and closing a screen basket of a top-suspended scraper discharging centrifugal machine. Comprising a bearing seat, a main shaft rotationally inserted into the bearing seat, driving devices arranged on the two sides of the bearing seat correspondingly, a pushing assembly movably arranged on the main shaft in a sleeving mode, a machine cover located below the pushing assembly and a plurality of outer positioning rollers rotationally arranged on the upper side of the machine cover, and each driving device is provided with an output end. And the output end is connected with the pushing assembly. The opening and closing pushing device solves the technical problem that filter cloth is damaged due to the fact that the swing amplitude of a main shaft is large in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge technical field, concretely relates to a kind of upper suspension type scraper unloading centrifuge screen basket opening and closing pushing device. BACKGROUND

[0002] Upper suspension type scraper unloading centrifuge is widely used in sugar making, pharmacy, chemical industry and other fields, and is filtered by screen basket, and material is adhered to the inner wall of screen basket after filtration, and then scraped down by scraper, and material directly falls from the bottom of screen basket, while screen basket has opening and closing device, and opening and closing device controls opening and closing of discharge port by pushing device, so as to control material unloading.

[0003] Since centrifuge is high-speed rotating equipment, main shaft rotates at high speed, and vibration and drum swing exist inevitably in working stage, and pushing device also swings with vibration and swing, and abnormal conditions such as main shaft and drum swing amplitude too large to damage screen basket often occur in the use of existing machine, which hinders normal production, and service life of centrifuge is short.Therefore, a new technical scheme is needed to solve at least one of the above technical problems. SUMMARY

[0004] The utility model aims at providing a kind of upper suspension type scraper unloading centrifuge screen basket opening and closing pushing device, solve the technical problem that the main shaft swing amplitude of prior art is large and causes filter cloth damage.

[0005] In order to realize the above technical purpose, and reach the above technical requirement, the technical scheme that the utility model employs is: a kind of upper suspension type scraper unloading centrifuge screen basket opening and closing pushing device, it is characterized by including bearing seat, rotatable main shaft being inserted in the bearing seat, drive device being respectively arranged in the bearing seat two sides, movable pushing assembly being set on the main shaft, lid being located below the pushing assembly, multiple outer positioning rollers being rotatably arranged on the upper side of the lid, the drive device has output end, and the output end is connected with the pushing assembly.

[0006] As preferred technical scheme, the pushing assembly includes movable positioning sleeve seat being set on the main shaft, roller seat being coaxially arranged on the periphery of the positioning sleeve seat, and inner pushing roller being rotatably inserted in the roller seat, the roller seat is connected with the output end, the positioning sleeve seat two sides are respectively provided with accommodating groove, and the inner pushing roller extends into the accommodating groove.

[0007] As preferred technical scheme, the positioning sleeve seat includes upper shaft shoulder, lower shaft shoulder being arranged in the lower end of the upper shaft shoulder, the lid is detachably provided with lower bearing bush, the main shaft is coaxially penetrated in the lower bearing bush, the lower shaft shoulder cooperates with the lower bearing bush, and the upper shaft shoulder cooperates with the outer positioning roller.

[0008] As a preferred technical scheme, the main shaft is movably sleeved with an upper bearing bush, and the upper end of the upper bearing bush extends into the positioning sleeve seat and is detachably connected with the positioning sleeve seat.

[0009] As a preferred technical scheme, the outer periphery of the main shaft is movably sleeved with a connecting sleeve, and the upper end of the connecting sleeve is detachably connected with the lower end of the upper bearing bush.

[0010] As a preferred technical scheme, the roller seat comprises a seat body and a seat cover which is detachably arranged on one side of the seat body, and an inner positioning shaft is radially arranged in the seat body, and the inner push roller is rotatably sleeved on the inner positioning shaft.

[0011] As a preferred technical scheme, the outer periphery of the driving device is detachably provided with a position sensing assembly for sensing the position of the output end.

[0012] As a preferred technical scheme, the output end is detachably provided with a sensing plate, and the position sensing switch assembly comprises a position detection plate which is detachably arranged on the outer periphery of the driving device, and an upper sensing switch and a lower sensing switch which are detachably arranged on the position detection plate and are used for sensing the sensing plate.

[0013] As a preferred technical scheme, the outer positioning rollers are uniformly arranged in the circumference, and the outer periphery of the outer positioning rollers is covered with a non-metal layer.

[0014] As a preferred technical scheme, the driving device is a pneumatic cylinder, and a connecting plate is fixedly arranged on the upper side of the roller seat and is connected with the output end.

[0015] The beneficial effects of the present application are as follows:

[0016] 1) The driving device drives the output end to descend, drives the push assembly to descend, and the outer positioning roller contacts the push assembly to be positioned, so that the shaking range of the main shaft is prevented from being too large, the technical problem that the filter cloth is damaged and the bearing bush is worn out due to the large swing range of the main shaft in the prior art is solved, and the service life of the centrifugal machine is prolonged.

[0017] 2) The driving device drives the output end to descend, drives the roller seat to descend, the inner push roller contacts the positioning sleeve seat to drive the positioning sleeve seat to descend, and the outer positioning roller contacts the positioning sleeve seat to be positioned, so that the positioning effect of the main shaft is good.

[0018] 3) The upper shaft shoulder cooperates with the outer positioning roller, and the lower shaft shoulder cooperates with the lower bearing bush, so that the wear of the lower bearing bush is reduced.

[0019] 4) The upper sensing switch and the lower sensing switch can sense the sensing plate, so as to sense the position of the output end and facilitate the control of the position of the main shaft. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1is an embodiment of the utility model provides open and close pusher's work drawing of the utility model;

[0021] Figure 2 is Figure 1 sectional view of A-A in figure 1;

[0022] Figure 3 is Figure 1 sectional view of B-B in figure 1;

[0023] in Figures 1-3 In figure 1, 1, bearing seat;2, main shaft;3, drive device;4, output end;5, pusher assembly;501, positioning sleeve seat;5011, containing groove;5012, upper shaft shoulder;5013, lower shaft shoulder;502, gyro wheel seat;5021, seat body;5022, cover;503, inner push gyro wheel;6, machine cover;7, outer positioning gyro wheel;8, lower bearing bush;9, upper bearing bush;10, connecting sleeve;11, induction plate;12, position detection plate;13, upper induction switch;14, lower induction switch;15, fixed seat;16, connecting plate;17, sealing ring. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the drawings.

[0025] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar parts;In the description of the utility model, it is understood that if the terms "head", "tail", "top", "bottom", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model, and does not indicate or imply that the device or element indicated must have a particular orientation, structure and operation, therefore the positional relationship described in the drawings is only used for example, and can not be understood as the limitation of the patent, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0026] Please refer to Figures 1-3This utility model provides an embodiment of a screen basket opening and closing driving device for an upper-suspended scraper discharge centrifuge, including a bearing seat 1, a main shaft 2 rotatably inserted into the bearing seat 1, a driving device 3 respectively disposed on both sides of the bearing seat 1, a pushing assembly 5 movably sleeved on the main shaft 2, a cover 6 located below the pushing assembly 5, and a plurality of outer positioning rollers 7 rotatably disposed on the upper side of the cover 6. The driving device 3 has an output end 4, which is connected to the pushing assembly 5. The driving device 3 drives the output end 4 to descend, thereby driving the pushing assembly 5 to descend. The outer positioning rollers 7 contact the outer periphery of the pushing assembly 5 for positioning, preventing the main shaft 2 from shaking excessively. This solves the technical problem of filter cloth damage caused by the large swing amplitude of the main shaft 2 in the prior art, and extends the service life of the centrifuge.

[0027] Specifically, a fixed seat 15 is provided on each side of the bearing housing 1, and the drive device 3 is detachably mounted on the fixed seat 15.

[0028] like Figures 1-3 As shown, the pushing component 5 includes a positioning sleeve 501 movably sleeved on the main shaft 2, a roller seat 502 coaxially arranged around the positioning sleeve 501, and an inner pushing roller 503 rotatably inserted into the roller seat 502. The roller seat 502 is connected to the output end 4. The positioning sleeve 501 has receiving grooves 5011 on both sides. The inner pushing roller 503 extends into the receiving grooves 5011. The driving device 3 drives the output end 4 to move, which in turn drives the roller seat 502 to move. The inner pushing roller 503 contacts the positioning sleeve 501, which in turn drives the positioning sleeve 501 to move.

[0029] like Figures 1-3 As shown, the positioning sleeve 501 includes an upper shoulder 5012 and a lower shoulder 5013 disposed at the lower end of the upper shoulder 5012. The cover 6 is detachably provided with a lower bearing 8. The main shaft 2 is coaxially inserted through the lower bearing 8. The lower shoulder 5013 cooperates with the lower bearing 8. The upper shoulder 5012 cooperates with the outer positioning roller 7 to prevent the main shaft 2 and the positioning sleeve 501 from shaking excessively. The upper shoulder 5012 cooperates with the outer positioning roller 7, and the lower shoulder 5013 cooperates with the lower bearing 8. A gap is provided between the lower shoulder 5013 and the lower bearing 8. The positioning sleeve 501 has a small vibration amplitude, reducing the wear of the lower bearing 8.

[0030] like Figures 1-3 As shown, a sealing ring 17 is embedded inside the positioning sleeve 501. The sealing ring 17 is sleeved on the main shaft 2 and serves to seal.

[0031] like Figures 1-3As shown, the movable sleeve of the main shaft 2 is provided with an upper bearing bush 9, the upper end of the upper bearing bush 9 extends into the positioning sleeve seat 501 and is detachably connected with the positioning sleeve seat 501, the positioning effect of the main shaft 2 is good, and the wear of the main shaft 2 is reduced.

[0032] As shown in the figure, Figures 1-3 As shown, the movable sleeve of the main shaft 2 is provided with a connecting sleeve 10, the upper end of the connecting sleeve 10 is detachably connected with the lower end of the upper bearing bush 9, the connecting sleeve 10 plays a guiding role, and a connecting opening and closing device (not marked) is connected, when the connecting sleeve 10 moves, the connecting sleeve 10 drives the opening and closing device to move to realize the opening and closing of the discharge port.

[0033] As shown in the figure, Figures 1-3 As shown, the roller seat 502 includes a seat body 5021 and a seat cover 5022 detachably arranged on one side of the seat body 5021, the seat body 5021 is provided with an inner positioning shaft along the radial direction, and the inner driving roller 503 is rotatably sleeved on the inner positioning shaft, the seat body 5021 and the seat cover 5022 both have arc ring segments, and the cooperation effect with the main shaft 2 is good.

[0034] As shown in the figure, Figures 1-3 As shown, the outer peripheral side of the driving device 3 is detachably provided with a position sensing assembly for sensing the position of the output end 4, specifically, the output end 4 is detachably provided with a sensing plate 11, the position sensing switch assembly includes a position detection plate 12 detachably arranged on the outer peripheral side of the driving device 3, an upper sensing switch 13 and a lower sensing switch 14 for sensing the sensing plate 11 detachably inserted into the position detection plate 12, the upper sensing switch 13 and the lower sensing switch 14 can sense the sensing switch, so as to sense the position of the output end 4, facilitate the control of the position of the main shaft 2, in the feeding stage, the sensing plate 11 is located at the upper sensing switch 13, in the discharging stage, the sensing plate 11 is located at the lower sensing switch 14, the upper sensing switch 13 and the lower sensing switch 14 are electrically connected with the PLC control system, and the position signal of the upper sensing switch 13 and the lower sensing switch 14 is transmitted to the PLC control system, if the signal is lost during operation, the centrifugal machine will stop and alarm, avoiding automatic downward movement caused by gravity and causing material loss.

[0035] As shown in the figure, Figures 1-3 As shown, the outer positioning rollers 7 are uniformly arranged on the circumference, the outer positioning shaft is axially inserted into the cover 6, and the outer positioning rollers 7 are rotatably sleeved on the outer positioning shaft, specifically, the number of the outer positioning rollers 7 is four, increasing the number of the outer positioning rollers 7, the overall stress is more uniform, the load condition of a single outer positioning roller 7 can be improved, the service life of the outer positioning roller 7 is prolonged, and overall the rotation of the main shaft 2 of the centrifugal machine is more stable and the discharging process is more stable, further, the outer peripheral side of the outer positioning roller 7 is covered with a non-metallic layer, thereby reducing the wear of the upper shaft shoulder 5012.

[0036] As Figures 1-3 The driving device 3 is a cylinder, and a connecting plate 16 is fixedly arranged on the upper side of the roller seat 502 and connected with the output end 4.

[0037] The above embodiments are only used for clearly illustrating the present application, and are not used for limiting the embodiments, and for those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments do not need to be exhausted, and the obvious changes or variations derived from the embodiments are still within the protection scope of the present application.

Claims

1. An upper suspension type pusher device for opening and closing a screen basket of a scraper discharge centrifuge, characterized by, Including bearing seat, rotatable insert in the main shaft of bearing seat, drive device arranged in the bearing seat two sides respectively, movable sleeve set in the main shaft of push assembly, cover located below the push assembly, a plurality of rotatable set in the upper side of the cover of external positioning roller, the drive device has output end, the output end and the push assembly are connected.

2. The opening and closing pushing device for the screen basket of the upper suspension type scraper discharge centrifuge according to claim 1, characterized in that, The push assembly includes a positioning sleeve seat movably sleeved on the main shaft, a roller seat coaxially arranged on the periphery of the positioning sleeve seat, and an inner push roller rotatably inserted into the roller seat. The roller seat is connected with the output end, and the positioning sleeve seat is provided with a containing groove on both sides.

3. The opening and closing pushing device for the screen basket of the upper suspension type scraper centrifuge according to claim 2, characterized in that, The positioning sleeve seat includes an upper shaft shoulder and a lower shaft shoulder arranged at the lower end of the upper shaft shoulder. The cover is detachably provided with a lower bearing bush, the main shaft is coaxially arranged in the lower bearing bush, the lower shaft shoulder is matched with the lower bearing bush, and the upper shaft shoulder is matched with the external positioning roller.

4. The opening and closing pushing device for the screen basket of the upper suspension type scraper centrifuge according to claim 3, characterized in that, The main shaft is movably sleeved with an upper bearing bush, the upper end of the upper bearing bush extends into the positioning sleeve seat, and the upper bearing bush is detachably connected with the positioning sleeve seat.

5. The opening and closing pushing device for the screen basket of the upper suspension type scraper centrifuge according to claim 4, characterized in that, The outer periphery of the main shaft is movably sleeved with a connecting sleeve, and the upper end of the connecting sleeve is detachably connected with the lower end of the upper bearing bush.

6. The opening and closing pushing device for the screen basket of the upper suspension type scraper centrifuge according to claim 2, characterized in that, The roller seat includes a seat body and a seat cover detachably arranged on one side of the seat body. The seat body is radially inserted with an inner positioning shaft, and the inner push roller is rotatably sleeved on the inner positioning shaft.

7. The opening and closing pushing device for the basket of the top suspension type scraper discharge centrifuge according to claim 1, characterized in that, The outer periphery of the drive device is detachably provided with a position sensing switch assembly for sensing the position of the output end.

8. The opening and closing pushing device for the upper suspension type scraper discharge centrifuge screen basket according to claim 7, characterized in that, The output end is detachably provided with a sensing plate, the position sensing switch assembly includes a position detection plate detachably arranged on the outer periphery of the drive device, an upper sensing switch and a lower sensing switch detachably inserted into the position detection plate for sensing the sensing plate.

9. The opening and closing pushing device for the basket of the top suspension type scraper discharge centrifuge according to claim 1, characterized in that, The external positioning rollers are uniformly arranged in the circumference, and the outer periphery of the external positioning rollers is covered with a non-metal layer.

10. The opening and closing pushing device for the screen basket of the upper suspension type scraper centrifuge according to claim 2, characterized in that, The drive device is a gas cylinder, the upper side of the roller seat is fixedly provided with a connecting plate, and the connecting plate is connected with the output end.

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