CN212943509U

CN212943509U - FWZ type bag-turning type centrifugal machine

Info

Publication number: CN212943509U
Application number: CN202021193117.3U
Authority: CN
Inventors: 潘万贵; 潘鑫; 林海波
Original assignee: Taizhou Vocational and Technical College
Current assignee: ZHEJIANG CHENGXIN PHARM & CHEM EQUIPMENT Co.,Ltd.
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-13
Anticipated expiration: 2030-06-24

Abstract

The utility model belongs to the technical field of centrifugal equipment, and discloses a FWZ type bag-turning centrifugal machine which is provided with a processing device and a driving device; the outer shaft of the driving device is supported and fixed at the left end of the driving device through two bearings, an inner shaft is sleeved in the outer shaft, an oil cylinder is arranged in the right end of the inner shaft, a clutch is fixed at the right ends of the outer shaft and the inner shaft through bolts, a screw rotating joint is connected in the middle of the right end of the inner shaft through a rotating shaft and connected with a spindle driving motor through a connecting rod, the spindle driving motor is hung on a rack, and a weighing sensor is fixed at the lower end of the rack through bolts. The utility model realizes the bag turning process by controlling the clutch and the hydraulic system, and reduces the difficulty of working condition control; the shafting structure supported by the two-point bearing shortens the length of the rotating shaft, has more compact structure, improves the rigidity and the critical rotating speed of the shafting, has more stable machine operation, and has the advantages of few rotating parts, easy control, low manufacturing cost and the like.

Description

FWZ type bag-turning type centrifugal machine

Technical Field

The utility model belongs to the technical field of centrifugal equipment, especially, relate to a FWZ type turns over pocket type centrifuge.

Background

Currently, the closest prior art in the industry:

the safety reliability, automation, environmental protection and other aspects of centrifugal filtering equipment are increasingly required by pharmaceutical, chemical and food processing industries, and the conventional vertical or horizontal centrifugal machine adopting a scraping method for discharging materials can damage crystal grains of products, and meanwhile, residual filter residues in a rotary drum cause more material loss. Centrifuges are widely used in various industries, such as tripodia centrifuges, scraper centrifuges, baghouse centrifuges, bottom discharge centrifuges, piston pusher centrifuges and the like to separate suspension, but the centrifuges generally have the defects of high labor intensity, non-closed operation, poor safety protection, residual solid materials in the centrifuges and the like.

In the development of filter centrifuges, people pay great attention to the method for discharging filter residues. The bag-turning type centrifugal machine is a new type filtering type centrifugal machine, it has a special solid-phase material discharge mechanism, i.e. filter bag turning mechanism. A filter bag is arranged in the centrifuge drum, when slag is discharged, the filter bag is turned over by the filter bag turning mechanism, the inner surface of the filter bag becomes the outer surface, and solid-phase materials are separated from the filter bag under the action of centrifugal force. Compared with scraper centrifuges, piston pusher centrifuges, spiral discharge centrifuges and the like, the bag-turning type centrifuges have the advantages of less residues on the filtering surface, good washing effect, large operation elasticity and the like, and have wide application prospects in the industries of food, chemical industry, pharmacy and the like. The opening and closing of the drum cover is from the relative movement of the inner shaft and the outer shaft. Different filter bag turnover mechanisms can be generated by different pulling modes of the inner shaft. The filter bag turnover mechanism determines whether the rotary drum can be sealed in a dehydration state and whether the filter bag can be turned over and smoothly discharges slag in a slag discharge state, so the turnover mechanism is a key part for the development of the machine type.

The oil cylinder driving type filter bag overturning mechanism is the earliest structure of an overturning bag type centrifuge, an inner shaft for driving the filter bag to overturn is integrated with a piston rod of an oil cylinder and connected with a piston, the oil cylinder and a rotary drum rotate at the same speed, and the overturning or returning of the filter bag is controlled by controlling the inlet and outlet directions of hydraulic oil. The structure has the defects that the rotating oil cylinder is in dynamic contact with the static oil supply device, oil leakage is easy, and the environment is polluted. Secondly, the separated products and environment are easily polluted when the piston rod goes in and out of the oil cylinder. The rotary oil cylinder has larger moment of inertia, and the critical rotating speed of the shaft can be reduced. In recent years, oil cylinder driving type filter bag turnover mechanisms are gradually eliminated. Since 1994, the German Heinecoler company gradually replaced the oil cylinder driven filter bag turnover mechanism with a mechanically driven filter bag turnover mechanism. The mechanical driving type filter bag overturning mechanism is characterized in that one motor drives an outer shaft through a belt wheel, and the other motor drives a threaded shaft through the belt wheel. The motor characteristic and control precision technology are one of the key technologies for realizing the bag-turning centrifuge. The shaft system of the bag-turning type centrifuge is a high-speed rotating shaft system with three shafts (an outer shaft, an inner shaft and a spiral shaft) capable of relatively displacing. The axial dimension is longer, the structure is not compact, the high-speed rotating shaft structure with three supporting points greatly improves the manufacturing precision and the installation difficulty, the supporting points have high requirements on the rigidity and the strength of the machine base, and the weight is increased. When the speed of the motor driving the outer shaft is greater than the speed of the motor driving the threaded shaft, the threaded shaft will rotate relative to the sliding nut. The sliding nut can not rotate due to the limiting effect of the guide cylinder and the guide key, so that the threaded shaft can only axially move and the inner shaft can be pulled to axially move. The lower drum cover seals the rotary drum under the pulling of the inner shaft, so that the rotary drum is in a closed state, and the charging or centrifugal filtration process can be carried out. Conversely, when the speed of the threaded shaft motor is greater than that of the outer shaft motor, the drum cover leaves the drum, and the centrifuge is in a discharge state. The structure is to accurately control the speed of the screw shaft motor and the outer shaft motor, and also to control their relative speed. The structure has the defects of more rotating parts, high control difficulty and high manufacturing cost.

In summary, the problems of the prior art are as follows:

(1) the existing oil cylinder driving type filter bag overturning mechanism is easy to leak oil and pollute the environment, a piston rod enters and exits the oil cylinder and easily pollutes separated products and the environment, and the rotating oil cylinder has larger rotational inertia and can reduce the critical rotating speed of a shaft;

(2) the existing mechanical drive type filter bag turnover mechanism has the disadvantages of multiple rotating pieces, high control difficulty and high manufacturing cost.

The difficulty of solving the technical problems is as follows:

in the 11 th 1998 month, the Heineckel company showed the product of the bag-turning type centrifuge at the Beijing International pharmaceutical Equipment exhibition, and also applied a series of invention patents (patent No. (91101702. X)) to the Chinese national intellectual Property office at the same time of showing; (91101701.1); (9881739.9); (97199559.1); (97199958.9); (200480006484.5), etc. The advantages of the HF type bag-turning centrifugal machine cause great reverberation in the domestic pharmaceutical industry. A plurality of domestic medicine machine manufacturing enterprises with certain capacity are invested in research and development, but the enterprises fail due to overlarge technical difficulty in the imitation process, and certain achievements are obtained in the research process, so that utility model patents (patent numbers 02257165.5, 01222421.9 and the like) are applied, but the bag-turning type centrifugal machine which has independent intellectual property and can be officially used is not successfully developed in China.

The significance of solving the technical problems is as follows:

the novel technology of the FWZ bag-turning type centrifuge is popularized and applied, the level of key equipment in industrial departments such as chemical industry, medicine and food can be improved, the difference between the national bag-turning type centrifuge and the international advanced level is reduced, and the competitive capacity of the domestic FWZ bag-turning type centrifuge is improved.

Social benefits are as follows:

meeting GMP pharmaceutical standard and environmental protection standard;

secondly, the separation factor is high, the moisture content of the material is low, the washing is uniform, the equipment volume is small, and the occupied space is reduced;

the labor intensity of the operation is reduced, and the labor productivity is improved;

fourthly, 50-100 people can be placed for employment;

after the project product is put into production, the gap between the bag-turning centrifugal machine in China and the international advanced level is reduced, and the localization process of important technical equipment is promoted.

The industrialization prospect is as follows:

with the tightening of environmental protection policies, the pharmaceutical and chemical industries are accelerating the pace of equipment updating and modification, and the requirements on the aspects of safety, reliability, economic benefit, automation degree, environmental protection and the like of separation and filtration equipment are continuously improved. Only a brand new structural design can meet the requirements of users, and the bag-turning type centrifugal machine can fully meet the requirements of the users. At present, only 6 thousands of drug production enterprises exist in China, 30 enterprises are calculated according to conservative numbers, one tenth of enterprises are selected, the market demand is 18000, and in addition, more than fifty thousand market demands are estimated in the chemical industry and the food industry, so the market demand is large.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a FWZ type turns over pocket type centrifuge.

The utility model discloses a realize like this, FWZ type bag centrifuge is provided with:

a processing device and a driving device;

the processing device comprises a discharge bin and a filtering bin, a rotary drum is arranged in the filtering bin, and the left end of the rotary drum is connected with a material pushing disc through a filter bag;

the utility model discloses a quick-witted spindle drive, including outer axle, outer axle and axle right-hand member, drive arrangement is provided with the outer axle of bolt fastening at the rotary drum right-hand member, the outer axle supports through two bearings and fixes at the drive arrangement left end, the inside cover of outer axle is equipped with interior axle, inlay the slider between outer axle and the interior axle, guarantee outer axle and interior synchronous rotation of axle and axial displacement, the inside axial hydro-cylinder of having seted up of interior axle right-hand member, outer axle and interior axle right-hand member have the clutch through the bolt fastening, there is screw rod rotary joint through the pivot hookup in the middle of the interior axle right.

Furthermore, four supporting points are arranged at the lower end of the rack, and a shock-absorbing spring is bolted at the lower end of each supporting point.

Further, the oil cylinder is communicated with an actuator oil cylinder on the outer side of the outer shaft.

Further, the bearing externally mounted has vibrations measuring device, vibrator's control end is connected with the controller, the display screen passes through data line connection controller.

Further, a display is installed on the driving device, a controller is installed inside the driving device, and the display screen is connected with the controller through a data line

The utility model realizes the bag turning process by controlling the clutch and the hydraulic system, reduces the difficulty of working condition control and also uses one less motor; compared with a shafting structure supported by a two-point bearing and the same type HF800 of the Hainekel, the length of the shafting structure supported by the two-point bearing is reduced by 1 meter, the length of a rotating shaft is shortened, the structure is more compact, the rigidity and the critical rotating speed of the shafting structure are improved, and the machine runs more stably. The structure has the advantages of few rotating parts, easy control, low manufacturing cost and the like. The sensitivity of the weighing device reaches 1 kilogram division value, the requirement on the technical parameters of the centrifuge on the symmetrical quantity is met, and the weight of the materials in the centrifuge drum can be accurately measured and controlled. The utility model realizes the mechanical bag turning mechanism under the control of the hydraulic system by combining the hydraulic system and the mechanical mechanism, and the turning mechanism has all the characteristics of the hydraulic system drive; the device has the advantages of stable and reliable performance, adjustable thrust and speed, stable operation, long service life, reasonable structure, convenient maintenance and the like.

The utility model discloses a plurality of springs of moving away to avoid possible earthquakes can cushion the vibration of frame when the motor is rotatory, play the effect of damping protection.

Drawings

Fig. 1 is a schematic structural view of an FWZ type bag-turning centrifuge provided by an embodiment of the present invention;

in the figure: 1. a spindle drive motor; 2. a shock absorbing spring; 3. a weighing sensor; 4. a screw rotary joint; 5. a clutch; 6. an actuator cylinder; 7. an oil cylinder; 8. an inner shaft; 9. an outer shaft; 10. a drum; 11. a filter bag; 12. pushing the material tray; 13. a support point; 14. a processing device; 15. a drive device; 16. a filtering bin; 17. a discharging bin; 18. and a frame.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

As shown in fig. 1, the embodiment of the utility model provides a FWZ type bag turnover centrifuge includes: the device comprises a main shaft driving motor 1, a shock absorbing spring 2, a weighing sensor 3, a screw rotary joint 4, a clutch 5, an actuator oil cylinder 6, an oil cylinder 7, an inner shaft 8, an outer shaft 9, a rotary drum 10, a filter bag 11, a material pushing disc 12, a supporting point 13, a processing device 14, a driving device 15, a filter bin 16, a discharging bin 17 and a rack 18.

The processing device 14 comprises a discharge bin 17 and a filter bin 16 arranged inside the discharge bin 17, the filter bin 16 is provided with a rotary drum 10, and the left end of the rotary drum 10 is connected with a material pushing disc 12 through a filter bag 11; drive arrangement 15 is provided with the outer axle 9 of welding at the rotary drum 10 right-hand member, outer axle 9 supports through two bearings and fixes at drive arrangement 15 left end, the inside cover of outer axle 9 is equipped with interior axle 8, the inside axial hydro-cylinder 7 of having seted up of interior axle 8 right-hand member, outer axle 9 and interior axle 8 right-hand member have clutch 5 through the bolt fastening, there is screw rod rotary joint 4 through the pivot hookup in the middle of interior axle 8 right-hand member, screw rod rotary joint 4 is connected with main shaft driving motor 1 through the connecting rod, main shaft driving motor 1 hangs in frame 18, the 18 lower extreme of frame has weighing sensor 3 through.

Preferably, the lower end of the frame 18 is provided with four supporting points 13, and the lower end of each supporting point 13 is bolted with a shock absorbing spring 2.

Preferably, the cylinder 7 communicates with the actuator cylinder 6 outside the outer shaft 9.

Preferably, a filter screen is installed inside the filter bin 16, a vibration device is installed on the filter screen, and a control end of the vibration device is connected with a controller.

Preferably, a display is installed on the driving device 15, a controller is installed inside the driving device, and the display screen is connected with the controller through a data line.

The utility model discloses a theory of operation: the utility model discloses when using, main shaft driving motor 1 drives screw rod rotary joint 4 through the transfer line and rotates, screw rod rotary joint 4 drives the interior rotation of left end, control clutch 5 through outside control system, realize the separation and reunion linkage of outer axle 9 and interior axle 8, drive the rotation of outer axle 9 through interior axle 8, thereby realize driving the effect of 14 rotations of processingequipment, 4 bearing points have been adopted, connect the suspension spring 2 of connecting the frame on every bearing point, connect below the damping protection through suspension spring 2 and connect weighing sensor 3, transmit outside control system with the measuring result through weighing sensor 3, through the actual operation test, sensitivity reaches 1 kg graduation value, the requirement on the centrifuge symmetry technical parameter has been satisfied, can carry out accurate survey and control to the weight of material in the centrifuge drum.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. An FWZ-type baghouse centrifuge, characterized in that it is provided with:

a processing device and a driving device;

2. The FWZ-type bag-in-turn centrifuge according to claim 1, wherein the frame is provided at a lower end thereof with four support points, each of which is bolted at a lower end thereof with a suspension spring.

3. The FWZ-type bag-in-bag centrifuge of claim 1, wherein the cylinder communicates with an actuator cylinder outside the outer shaft.

4. The FWZ-type bag-in-turn centrifuge according to claim 1, wherein a vibration measuring device is mounted outside the bearing, a control end of the vibration measuring device is connected with a controller, and the controller is connected with a display screen through a data line.

5. The FWZ-type bag-in-turn centrifuge as claimed in claim 1, wherein a display screen is mounted on the driving means, a controller is mounted inside the driving means, and the display screen is connected to the controller through a data line.