阅读说明：本技术 一种离心机用刮刀装置 (Scraper device for centrifuge ) 是由 苏健 韦开洪 江海峰 张飞龙 于 2021-07-20 设计创作，主要内容包括：本发明提供一种离心机用刮刀装置,属于刮刀装置技术领域,该离心机用刮刀装置包括机座面板,机座面板的下侧设有转鼓；本发明中刮刀旋转采用伺服电动机带动电缸来控制,与现有技术采用气缸或液压相比,可根据要求对刮削进给速度和回位速度等参数进行控制,也可根据刮削时测得的力矩值、电流值等参数对刮削进给速度进行实时调整,例如,一般来说靠近筛网区域的滤渣层性质密实；远离筛网的区域的滤渣层性质疏松,刮刀回程时不受滤渣层的影响,操作者可调整刮刀刮削进给速度由快到慢,回程时速度加快,可大大节约卸料时间,提高离心机的生产效率。(The invention provides a scraper device for a centrifuge, which belongs to the technical field of scraper devices and comprises a base panel, wherein a rotary drum is arranged on the lower side of the base panel; the scraper is controlled by driving the electric cylinder by the servo motor in rotation, compared with the prior art which adopts the air cylinder or hydraulic pressure, the scraper can control parameters such as scraping feeding speed, return speed and the like according to requirements, and can also adjust the scraping feeding speed in real time according to parameters such as moment values, current values and the like measured during scraping, for example, the property of a filter residue layer close to a screen mesh area is generally compact; the filter residue layer in the area far away from the screen is loose in property, the scraper is not influenced by the filter residue layer in the return stroke, the scraper can be adjusted by an operator to adjust the scraping feeding speed of the scraper from high speed to low speed, the speed is accelerated in the return stroke, the discharging time can be greatly saved, and the production efficiency of the centrifugal machine is improved.)

1. A scraper device for a centrifuge, comprising:

the engine base comprises an engine base panel (100), wherein a rotary drum (200) is arranged on the lower side of the engine base panel (100);

the guide rail support column (1), the guide rail support column (1) is fixedly connected to the upper end of the machine base panel (100);

the vertical cylinder (3), the said vertical cylinder (3) is fixedly connected to one end of the guide rail pillar (1);

the scraper bearing seat (5) is arranged on the lower side of the vertical cylinder (3) in a sliding manner;

the scraper device comprises a rotary driving shaft (7), wherein the rotary driving shaft (7) is fixedly connected to the lower end of a scraper bearing seat (5), the lower end of the rotary driving shaft (7) is fixedly connected with a scraper body (8), the scraper body (8) is positioned in a rotary drum (200), and one end of the scraper body (8) is provided with a scraper blade (9);

the positioning mechanism (4) is connected with the guide rail support column (1) to limit the position of the scraper body (8)

The electric cylinder (14), the electric cylinder (14) is fixedly connected to one end of the base panel (100), the upper end of the electric cylinder (14) is fixedly connected with a gear reducer (15), and one end of the gear reducer (15) is fixedly connected with a servo motor (16); and

the electric cylinder is characterized by comprising a rotating handle (10), the rotating handle (10) is fixedly connected to the upper end of the rotary driving shaft (7), and the electric cylinder (14) is movably hinged to one end of the rotating handle (10) through a hinge shaft.

2. The scraper device for the centrifuge according to claim 1, wherein the upper end of the scraper bearing seat (5) is provided with an inner limit adjusting bolt hole and an outer limit bolt hole, and the inner limit adjusting bolt hole and the outer limit bolt hole are respectively connected with an inner limit adjusting bolt (13) and an outer limit adjusting bolt (12) in a threaded manner.

3. The scraper device for the centrifugal machine according to claim 2, wherein the positioning mechanism (4) comprises an installation groove, a positioning cylinder, a cylinder piston rod (42) and a spring (41), the installation groove is arranged at one end of the guide rail support column (1), the positioning cylinder is fixedly connected in the installation groove, the cylinder piston rod (42) is slidably connected in the positioning cylinder, and the spring (41) is sleeved on the circumferential surface of the cylinder piston rod (42).

4. A scraper device for centrifugal machines according to claim 3, characterized in that the circumferential surface of the rotating drive shaft (7) is fixedly connected with a sealing flange (6).

5. The scraper device for the centrifugal machine according to claim 4, characterized in that a lifting connecting plate (11) is fixedly connected to the circumferential surface of the scraper bearing seat (5), and one end of the lifting connecting plate (11) is movably hinged to the other end of the piston rod of the vertical cylinder (3) through a hinge shaft.

6. A scraper device for centrifugal machine according to claim 5, characterized in that the inner circumferential wall of said drum (200) is provided with a screen (400), and the inner circumferential wall of said screen (400) is provided with a filter residue layer (300).

7. The scraper device of claim 6, wherein a plurality of connecting screw holes are formed at one end of the scraper body (8) and one end of the scraper blade (9), and screws are screwed in the connecting screw holes.

8. The scraper device for the centrifugal machine according to claim 7, wherein one end of the guide rail support column (1) is fixedly connected with the linear guide rail (2), the circumferential surface of the scraper bearing seat (5) is fixedly connected with a sliding plate, the upper end of the sliding plate is provided with a stabilizing hole, and the scraper bearing seat (5) is slidably connected with the circumferential surface of the linear guide rail (2) through the stabilizing hole.

Technical Field

The invention belongs to the technical field of scraper devices, and particularly relates to a scraper device for a centrifugal machine.

Background

A batch centrifuge is a mechanical device used for separating a solid-liquid mixture. After the solid-liquid mixed material enters a centrifuge drum, the drum rotates at a high speed, and under the action of a centrifugal force field, the mother liquor is discharged out of the drum through a screen and a liquid discharge hole; the solid particles are intercepted by the screen to complete the solid-liquid separation. When unloading after the separation, adopt full automatic mechanical scraper to unload usually, promote the lift and the rotary motion of scraper body promptly through atmospheric pressure or oil pressure, cut and scrape the filter residue on the screen cloth, the filter residue drops into centrifuge's discharge opening and accomplishes the work of unloading.

Because the types, the water content, the viscosity and other properties of the separated materials are different, the properties of a filter residue layer formed after solid-liquid separation are different, and the filter residue layer is likely to be loose and is easier to scrape; may also be dense and not easily shaved. Some dregs layer also can have above-mentioned difference in the region that is close to the screen cloth and the region of keeping away from the screen cloth, the rotary motion of scraper device cuts into the dregs layer with the scraper body and scrapes, but the rotary motion of scraper body is by atmospheric pressure or oil pressure drive cylinder or hydro-cylinder control, its speed and the moment of scraping and feeding can't obtain effective control, can't carry out timely effectual adjustment according to dregs layer nature, should keep suitable interval between scraper blade and the screen cloth on the scraper body, the interval is then the scraper blade scrapes the screen cloth easily for littleer, the interval is too big then the filter residue scrapes unclean, it is too much to remain on the screen cloth. Along with centrifuge long-term operation, scraper blade and screen cloth wearing and tearing gradually, this interval can the gradual change, and the back often needs to shut down, and the operator gets into centrifuge and carries out manual adjustment, influences production efficiency.

Disclosure of Invention

The invention aims to provide a scraper device for a centrifuge, and aims to solve the problems that in the prior art, a scraper blade cannot be timely and effectively adjusted according to the property of a filter residue layer, the scraper blade and a screen are gradually abraded along with the long-term operation of the centrifuge, the distance can be gradually changed, and an operator enters the centrifuge to manually adjust after the centrifuge is frequently stopped, so that the production efficiency is influenced.

In order to achieve the purpose, the invention provides the following technical scheme:

a scraper device for a centrifuge, comprising:

the lower side of the machine base panel is provided with a rotary drum;

the guide rail support column is fixedly connected to the upper end of the machine base panel;

the vertical cylinder is fixedly connected to one end of the guide rail support;

the scraper bearing block is arranged on the lower side of the vertical cylinder in a sliding manner;

the scraper device comprises a rotary driving shaft, a scraper blade and a scraper blade, wherein the rotary driving shaft is fixedly connected to the lower end of a scraper bearing seat;

the positioning mechanism is connected with the guide rail support column to limit the position of the scraper body;

the electric cylinder is fixedly connected to one end of the base panel, the upper end of the electric cylinder is fixedly connected with a gear reducer, and one end of the gear reducer is fixedly connected with a servo motor; and

the rotating handle is fixedly connected to the upper end of the rotating driving shaft, and the electric cylinder is movably hinged to one end of the rotating handle through a hinge shaft.

According to a preferable scheme of the invention, the upper end of the scraper bearing seat is provided with an inner limiting adjusting bolt hole and an outer limiting bolt hole, and the inner limiting adjusting bolt hole and the outer limiting bolt hole are respectively in threaded connection with an inner limiting adjusting bolt and an outer limiting adjusting bolt.

As a preferred scheme of the present invention, the positioning mechanism comprises an installation groove, a positioning cylinder, a cylinder piston rod and a spring, the installation groove is formed at one end of the guide rail pillar, the positioning cylinder is fixedly connected in the installation groove, the cylinder piston rod is slidably connected in the positioning cylinder, and the spring is sleeved on the circumferential surface of the cylinder piston rod.

As a preferable aspect of the present invention, a sealing flange is fixedly connected to a circumferential surface of the rotary driving shaft.

As a preferable scheme of the present invention, a lifting connecting plate is fixedly connected to a circumferential surface of the scraper bearing seat, and one end of the lifting connecting plate is movably hinged to the other end of the piston rod of the vertical cylinder through a hinge shaft.

As a preferable scheme of the invention, the circumferential inner wall of the rotary drum is provided with a screen, and the circumferential inner wall of the screen is provided with a filter residue layer.

As a preferred scheme of the present invention, a plurality of connection screw holes are formed at both one end of the scraper body and one end of the scraper blade, and screws are threadedly connected in the plurality of connection screw holes.

As a preferable scheme of the present invention, one end of the guide rail support is fixedly connected with a linear guide rail, a sliding plate is fixedly connected to a circumferential surface of the scraper bearing seat, a stabilizing hole is formed at an upper end of the sliding plate, and the scraper bearing seat is slidably connected to the circumferential surface of the linear guide rail through the stabilizing hole.

Compared with the prior art, the invention has the beneficial effects that:

1. the scraper is controlled by driving the electric cylinder by the servo motor in rotation, compared with the prior art which adopts the air cylinder or hydraulic pressure, the scraper can control parameters such as scraping feeding speed, return speed and the like according to requirements, and can also adjust the scraping feeding speed in real time according to parameters such as moment values, current values and the like measured during scraping, for example, the property of a filter residue layer close to a screen mesh area is generally compact; the filter residue layer in the area far away from the screen is loose in property, the scraper is not influenced by the filter residue layer in the return stroke, the scraper can be adjusted by an operator to adjust the scraping feeding speed of the scraper from high speed to low speed, the speed is accelerated in the return stroke, the discharging time can be greatly saved, and the production efficiency of the centrifugal machine is improved.

2. The invention adopts the positioning mechanism to ensure that the scraper does not generate misoperation, compared with the prior art which adopts a mechanical interlocking mode, the scraper serving as an independent component is not influenced by other parts, has high reliability, and can always keep a locking state under the condition that the centrifuge has no power gas.

3. When scraper bearing frame is promoted downwards by the piston rod of perpendicular cylinder, can restrict the descending height of scraper bearing frame through the lift connecting plate lapse, and then prevent that the scraper bearing frame that the maloperation leads to excessively descends and the scraper body and the scraper blade striking centrifuge bottom that lead to from causing the damage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is an enlarged view of a portion of the drawing A of the present invention;

FIG. 5 is a schematic top view of the rotational movement of a scraper body in a rotary drum of the present invention;

fig. 6 is a perspective view of the present invention.

In the figure: 1. a guide rail pillar; 2. a linear guide rail; 3. a vertical cylinder; 4. a positioning mechanism; 5. a scraper bearing seat; 6. sealing the flange; 7. rotating the driving shaft; 8. a scraper body; 9. a doctor blade; 10. a handle is rotated; 11. lifting the connecting plate; 12. an outer limit adjusting bolt; 13. an inner limit adjusting bolt; 14. an electric cylinder; 15. a gear reducer; 16. a servo motor; 41. a spring; 42. a cylinder piston rod; 100. a base panel; 200. a drum; 300. a slag layer; 400. and (4) screening.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-6, the present invention provides the following technical solutions:

a scraper device for a centrifuge, comprising:

a base panel 100, a rotary drum 200 is provided at the lower side of the base panel 100;

a guide rail pillar 1, the guide rail pillar 1 being fixedly connected to the upper end of the base panel 100;

the vertical cylinder 3 is fixedly connected to one end of the guide rail pillar 1;

the scraper bearing seat 5 is arranged on the lower side of the vertical cylinder 3 in a sliding manner;

the scraper is characterized in that a driving rotating shaft 7 is rotated, the driving rotating shaft 7 is fixedly connected to the lower end of a scraper bearing seat 5, a scraper body 8 is fixedly connected to the lower end of the driving rotating shaft 7, the scraper body 8 is located in the rotary drum 200, and a scraper blade 9 is arranged at one end of the scraper body 8;

the positioning mechanism 4 is connected with the guide rail support 1 to limit the position of the scraper body 8;

the electric cylinder 14 is fixedly connected to one end of the base panel 100, the upper end of the electric cylinder 14 is fixedly connected with a gear reducer 15, and one end of the gear reducer 15 is fixedly connected with a servo motor 16; and

the rotary handle 10 is fixedly connected to the upper end of the rotary driving shaft 7, and the electric cylinder 14 is movably hinged to one end of the rotary handle 10 through a hinge shaft.

In the embodiment of the invention, when the slag layer 300 needs to be scraped, the centrifuge is started to send a discharging instruction, so that the positioning mechanism is retracted backwards, the vertical cylinder 3 is started, the scraper bearing base 5 is pushed by the piston rod of the vertical cylinder to move downwards to the maximum stroke, then the vertical cylinder 3 sends a signal and starts the servo motor 16 to work, the servo motor 16 transmits power to the electric cylinder 14 through the gear reducer 15 after being started, so that the piston rod of the electric cylinder 14 is started, the rotating handle 10 is rotated through the outward pushing of the piston rod, the rotating driving shaft 7 fixedly connected with the rotating driving shaft rotates and drives the scraper body 8 and the scraper blade 9 to rotate, the slag layer 300 can be scraped through the scraper blade 9, the vertical cylinder 3 is operated reversely again when the scraping is finished, so that the rotating driving shaft 7 is rapidly recovered, and direction operation servo motor 16 makes it change the direction of power after retrieving, and then makes scraper blade 9 reset and make things convenient for the use next time, makes the user of service through the rotational speed of control vertical cylinder 3 and servo motor 16 come the scraping speed of accurate control scraper blade 9 through such design, and then practices thrift the time of unloading, improves centrifuge's production efficiency, and what need explain is: the specific types of the vertical cylinder 3, the servo motor 16, the gear reducer 15 and the electric cylinder 14 are selected by a person skilled in the art, and the vertical cylinder 3, the servo motor 16, the gear reducer 15 and the electric cylinder 14 belong to the prior art, which is not described in detail in this embodiment.

Specifically referring to fig. 2, the upper end of the scraper bearing seat 5 is provided with an inner limiting adjusting bolt hole and an outer limiting bolt hole, and the inner limiting adjusting bolt hole and the outer limiting bolt hole are respectively in threaded connection with an inner limiting adjusting bolt 13 and an outer limiting adjusting bolt 12.

In this embodiment: through the use of the outer limit adjusting bolt 12 and the inner limit adjusting bolt 13, the rotation angle of the rotating handle 10 can be limited, and further, the scraper can be prevented from colliding with the rotary drum 200 and the screen 400 when the electric cylinder 14 fails.

Referring to fig. 3, the positioning mechanism 4 comprises an installation groove, a positioning cylinder, a cylinder piston rod 42 and a spring 41, the installation groove is formed at one end of the guide rail pillar 1, the positioning cylinder is fixedly connected in the installation groove, the cylinder piston rod 42 is slidably connected in the positioning cylinder, and the spring 41 is sleeved on the circumferential surface of the cylinder piston rod 42.

In this embodiment: when the scraper is used, the air cylinder in the positioning mechanism 4 is cut off, the air cylinder piston rod 42 extends out under the elastic expansion of the spring 41, and then the movement of the scraper body 8 is limited through the air cylinder piston rod 42, so that the scraper body is not subjected to misoperation, and the use stability of the scraper is improved.

Specifically referring to fig. 4, a sealing flange 6 is fixedly connected to the circumferential surface of the rotary driving shaft 7.

In this embodiment: when rotatory driving shaft 7 and scraper body 8's connection, can make its inseparabler of connecting through sealing flange 6, make rotatory driving shaft 7 and scraper body 8 connect through sealing flange 6 simultaneously and save space more for the use of this device is more convenient and stable.

Specifically referring to fig. 5, a lifting connection plate 11 is fixedly connected to the circumferential surface of the scraper bearing seat 5, and one end of the lifting connection plate 11 is movably hinged to the other end of the piston rod of the vertical cylinder 3 through a hinge shaft.

In this embodiment: when scraper bearing frame 5 is pushed down by the piston rod of perpendicular cylinder 3, can restrict the decline height of scraper bearing frame 5 through lift connecting plate 11 lapse, and then prevent that scraper body 8 and scraper blade 9 that the excessive decline of scraper bearing frame 5 that leads to that the maloperation leads to from striking the centrifuge bottom and causing the damage.

Specifically referring to fig. 6, a plurality of connecting screw holes are formed at one end of each of the scraper body 8 and the scraper blade 9, and screws are screwed into the connecting screw holes.

In this embodiment: when long-time use or because the shape of scraper blade 9 changes under the exogenic action, can be through outwards rotating a plurality of screws out, at this moment alright dismantle and change scraper blade 9, make scraper blade 9 can obtain timely adjustment through such mode for the operation of this device is more stable.

Specifically, referring to fig. 3, one end of a guide rail support 1 is fixedly connected with a linear guide rail 2, a sliding plate is fixedly connected to the circumferential surface of a scraper bearing seat 5, a stable hole is formed in the upper end of the sliding plate, and the scraper bearing seat 5 is slidably connected to the circumferential surface of the linear guide rail 2 through the stable hole.

In this embodiment: when scraper bearing frame 5 is promoted downwards by the piston rod of perpendicular cylinder 3, can make scraper bearing frame 5 left end fixedly connected's sliding plate slide at linear guide 2's circumferential surface through the stable hole, and then make scraper bearing frame 5's removal more stable.

The working principle and the using process of the invention are as follows: the control system of the centrifuge sends a discharging instruction, the cylinder of the positioning device 4 of the scraper device is ventilated, the cylinder piston rod 42 overcomes the elasticity of the spring 41 and retracts into the guide rail support column 1, the signal of the downward movement of the vertical cylinder 3 is connected, and the piston rod of the vertical cylinder 3 pushes the scraper bearing seat 5, the scraper body 8 and other components to move downwards to the terminal point; the vertical cylinder 3 position sensor sends out a signal, the servo motor 16 works, the gear reducer 15 drives the electric cylinder 14 piston rod to push the rotating handle 10 to drive the rotating driving shaft 7 and the scraper body 8 to rotate to scrape the filter residue layer 300, parameters such as the scraping feeding speed can operate according to preset values in a control system, parameters such as a moment value and a current value fed back by the servo motor 16 can be adjusted in real time according to a preset algorithm, when scraping is finished, the electric cylinder 14 piston rod can be controlled to be quickly withdrawn, the scraper body 8 is screwed out to return, signals are sent to the vertical cylinder 3 at the same time, the piston rod of the vertical cylinder 3 is withdrawn, and the scraper body 8 upwards returns to a starting point.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.