阅读说明：本技术 一种机械丝杆传动式刮刀 (Mechanical screw rod transmission type scraper ) 是由 沈云旌 陈林 罗潇 张琼 刘莹莹 戚全利 赵玉石 王涛 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种机械丝杆传动式刮刀,刮刀轴可竖直滑动安装在导向套内,刮刀轴内部设有从顶部向下延伸的螺孔,丝杆一端伸入所述螺孔内且与所述螺孔螺纹配合,升降驱动组件和旋转驱动组件分别通过驱动齿轮和传动齿轮驱动丝杆升降和导向套转动,从而带动刮刀轴升降和旋转。通过上述优化设计的机械丝杆传动式刮刀,利用齿轮传动驱动保证移动稳定,同时将驱动机构设置在刮刀轴一侧,有效避免驱动机构工作中产生泄漏,对离心机内的物料造成污染。(The invention discloses a mechanical screw rod transmission type scraper, wherein a scraper shaft can be vertically and slidably arranged in a guide sleeve, a screw hole extending downwards from the top is formed in the scraper shaft, one end of a screw rod extends into the screw hole and is in threaded fit with the screw hole, and a lifting driving assembly and a rotating driving assembly respectively drive the screw rod to lift and the guide sleeve to rotate through a driving gear and a transmission gear, so that the scraper shaft is driven to lift and rotate. Through the mechanical screw rod transmission type scraper of the optimized design, the movement stability is guaranteed by utilizing gear transmission driving, and meanwhile, the driving mechanism is arranged on one side of the scraper shaft, so that the leakage generated in the working process of the driving mechanism is effectively avoided, and the pollution to materials in the centrifuge is caused.)

1. The utility model provides a machinery screw drive formula scraper which characterized in that includes: the scraper device comprises a protective cover (1), a guide sleeve (2), a scraper shaft (3), a screw rod (4), a lifting driving assembly and a rotating driving assembly;

The guide sleeve (2) is vertically arranged in the protective cover (1), the scraper shaft (3) can be vertically and slidably arranged in the guide sleeve (2), a screw hole extending downwards from the top is formed in the scraper shaft (3), and one end of the screw rod (4) extends into the screw hole and is in threaded fit with the screw hole;

the lifting driving assembly comprises a lifting mechanism (51), a lifting driving gear (52) and a lifting transmission gear (53), the lifting mechanism (51) is positioned outside the protective cover (1) and on one side of the guide sleeve (2), the lifting mechanism (51) is provided with a lifting output shaft, the lifting driving gear (52) and the lifting output shaft are coaxially arranged and fixedly connected, the lifting transmission gear (53) and the screw rod (4) are coaxially arranged and fixedly connected with the screw rod (4), and the lifting transmission gear (53) is meshed with the lifting driving gear (52);

the rotary driving assembly comprises a rotary mechanism (61), a rotary driving gear (62) and a rotary transmission gear (63), the rotary mechanism (61) is located outside the protective cover (1) and located on one side of the guide sleeve (2), the rotary mechanism (61) is provided with a rotary output shaft, the rotary driving gear (62) and the rotary output shaft are coaxially arranged and fixedly connected, the rotary transmission gear (63) and the guide sleeve (2) are coaxially arranged and fixedly connected with the guide sleeve (2), and the rotary transmission gear (63) is meshed with the rotary driving gear (62).

2. Mechanical screw driven doctor according to claim 1, characterised in that the lifting mechanism (51) and the rotation mechanism (61) are located on the same side of the guide sleeve (2).

3. Mechanical screw driven doctor according to claim 1, characterised in that the lifting mechanism (51) and/or the rotating mechanism (61) uses hydraulic motors.

4. Mechanical screw driven doctor according to claim 1, characterised in that the lifting and/or rotating mechanism (61) uses a servo motor.

5. The mechanical screw driven doctor blade according to claim 4, characterised in that the servomotor is equipped with a reducer.

6. The mechanical screw transmission type scraper according to claim 1, wherein the rotary driving assembly further comprises a limiting rack (7), the inner wall of the protective cover (1) is provided with a sliding groove, the sliding groove is located on one side of the rotary driving gear (63) and extends along the tangential direction of the rotary driving gear (63), a first limiting block and a second limiting block are respectively arranged at two ends of the sliding groove, the limiting rack (7) is slidably mounted in the sliding groove and located between the first limiting block and the second limiting block, and the limiting rack (7) is meshed with the rotary driving gear (63).

7. The mechanical screw drive type scraper according to claim 6, wherein the first limiting block adopts a first adjusting screw (81), the second limiting block adopts a second adjusting screw (82), the two ends of the chute are respectively provided with a first adjusting screw hole and a second adjusting screw hole, the first adjusting screw (81) is installed in the first adjusting screw hole in a threaded manner, a first limiting portion is arranged on one side of the first adjusting screw hole facing the limiting rack (7), and the second adjusting screw (82) is installed in the second adjusting screw hole in a threaded manner, and a second limiting portion is arranged on one side of the second adjusting screw hole facing the limiting rack (7).

Technical Field

The invention relates to the field of centrifuger scrapers, in particular to a mechanical screw rod transmission type scraper.

Background

The existing hydraulic scraper can be converted into mechanical energy from up and down through hydraulic energy and can do linear reciprocating motion; the left-right rotation is converted from linear motion to rotary motion through a gear rack. In the use process of the hydraulic scraper, the performance of equipment is affected by the abrasion of a sealing element, the abrasion of a cylinder barrel, the scratch of an inner wall, the corrosion of the inner wall, the scratch of a piston or a piston rod and the like, and after the tightness of the hydraulic scraper is damaged, the hydraulic scraper is easy to leak liquid, pollutes materials and the environment, and is difficult to repair or replace parts and high in cost.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a mechanical screw rod transmission type scraper.

The invention provides a mechanical screw rod transmission type scraper, which comprises: the scraper comprises a protective cover, a guide sleeve, a scraper shaft, a screw rod, a lifting driving assembly and a rotating driving assembly;

the guide sleeve is vertically arranged in the protective cover, the scraper shaft can be vertically and slidably arranged in the guide sleeve, a screw hole extending downwards from the top is formed in the scraper shaft, and one end of the screw rod extends into the screw hole and is in threaded fit with the screw hole;

the lifting driving assembly comprises a lifting mechanism, a lifting driving gear and a lifting transmission gear, the lifting mechanism is positioned outside the protective cover and positioned on one side of the guide sleeve, the lifting mechanism is provided with a lifting output shaft, the lifting driving gear and the lifting output shaft are coaxially arranged and fixedly connected, the lifting transmission gear is coaxially arranged with the screw rod and fixedly connected with the screw rod, and the lifting transmission gear is meshed with the lifting driving gear;

the rotary driving assembly comprises a rotary mechanism, a rotary driving gear and a rotary transmission gear, the rotary mechanism is located outside the protective cover and on one side of the guide sleeve, a rotary output shaft is arranged on the rotary mechanism, the rotary driving gear and the rotary output shaft are coaxially arranged and fixedly connected, the rotary transmission gear and the guide sleeve are coaxially arranged and fixedly connected, and the rotary transmission gear is meshed with the rotary driving gear.

Preferably, the lifting mechanism and the rotating mechanism are located on the same side of the guide sleeve.

Preferably, the lifting mechanism and/or the rotating mechanism employ hydraulic motors.

Preferably, the lifting and/or rotating mechanism employs a servo motor.

Preferably, the servo motor is provided with a speed reducer.

Preferably, the rotary driving assembly further comprises a limiting rack, the inner wall of the protective cover is provided with a chute, the chute is located on one side of the rotary transmission gear and extends along the tangential direction of the rotary transmission gear, the two ends of the chute are respectively provided with a first limiting block and a second limiting block, the limiting rack is slidably mounted in the chute and located between the first limiting block and the second limiting block, and the limiting rack is meshed with the rotary transmission gear.

Preferably, the first limiting block adopts a first adjusting screw, the second limiting block adopts a second adjusting screw, the two ends of the sliding groove are respectively provided with a first adjusting screw hole and a second adjusting screw hole, the first adjusting screw is installed in the first adjusting screw hole in a threaded manner, and a first limiting part is arranged on one side of the first adjusting screw rod facing the limiting rack, and the second adjusting screw is installed in the second adjusting screw hole in a threaded manner, and a second limiting part is arranged on one side of the second adjusting screw rod facing the limiting rack.

According to the mechanical screw rod transmission type scraper, the scraper shaft can be vertically and slidably mounted in the guide sleeve, the screw hole extending downwards from the top is formed in the scraper shaft, one end of the screw rod extends into the screw hole and is in threaded fit with the screw hole, and the lifting driving assembly and the rotating driving assembly respectively drive the screw rod to lift and the guide sleeve to rotate through the driving gear and the transmission gear, so that the scraper shaft is driven to lift and rotate. Through the mechanical screw rod transmission type scraper of the optimized design, the movement stability is guaranteed by utilizing gear transmission driving, and meanwhile, the driving mechanism is arranged on one side of the scraper shaft, so that the leakage generated in the working process of the driving mechanism is effectively avoided, and the pollution to materials in the centrifuge is caused.

Drawings

Fig. 1 is a schematic structural diagram of a mechanical screw rod transmission type scraper provided by the invention.

Fig. 2 is a schematic structural diagram of a rotation driving assembly of a mechanical screw transmission type scraper according to the present invention.

Detailed Description

As shown in fig. 1 and 2, fig. 1 is a schematic structural diagram of a mechanical screw driving type scraper according to the present invention, and fig. 2 is a schematic structural diagram of a rotation driving assembly of the mechanical screw driving type scraper according to the present invention.

Referring to fig. 1 and 2, the present invention provides a mechanical screw driving type scraper, including: the scraper device comprises a protective cover 1, a guide sleeve 2, a scraper shaft 3, a screw rod 4, a lifting driving assembly and a rotating driving assembly;

the guide sleeve 2 is vertically arranged in the protective cover 1, the scraper shaft 3 can be vertically and slidably arranged in the guide sleeve 2, a screw hole extending downwards from the top is formed in the scraper shaft 3, and one end of the screw rod 4 extends into the screw hole and is in threaded fit with the screw hole;

the lifting driving assembly comprises a lifting mechanism 51, a lifting driving gear 52 and a lifting transmission gear 53, the lifting mechanism 51 is positioned outside the protective cover 1 and on one side of the guide sleeve 2, the lifting mechanism 51 is provided with a lifting output shaft, the lifting driving gear 52 and the lifting output shaft are coaxially arranged and fixedly connected, the lifting transmission gear 53 and the screw rod 4 are coaxially arranged and fixedly connected, and the lifting transmission gear 53 is meshed with the lifting driving gear 52;

The rotary driving assembly comprises a rotary mechanism 61, a rotary driving gear 62 and a rotary transmission gear 63, the rotary mechanism 61 is located outside the protective cover 1 and on one side of the guide sleeve 2, the rotary mechanism 61 is provided with a rotary output shaft, the rotary driving gear 62 and the rotary output shaft are coaxially arranged and fixedly connected, the rotary transmission gear 63 and the guide sleeve 2 are coaxially arranged and fixedly connected, and the rotary transmission gear 63 is meshed with the rotary driving gear 62.

In the specific working process of the mechanical screw rod transmission type scraper, when the scraper is lifted, the lifting mechanism drives the lifting driving gear to rotate, the lifting driving gear drives the screw rod to rotate, the scraper shaft is vertically and slidably arranged in the guide sleeve along with the rotation of the screw rod, and the scraper shaft is vertically lifted in the guide sleeve under the thread fit; when the scraper shaft rotates, the rotating mechanism drives the rotating driving gear to rotate, and the rotating driving gear drives the guide sleeve to rotate so as to drive the scraper shaft to rotate together.

In this embodiment, but the mechanical screw drive formula scraper that provides, scraper axle vertical slidable mounting in the uide bushing, scrape the inside screw that is equipped with from top downwardly extending of axle, lead screw one end stretches into in the screw just with screw thread fit, lift drive assembly and rotary drive assembly go up and down and the uide bushing rotates through drive gear and drive gear drive lead screw respectively to the drive scrapes the axle and goes up and down and rotate. Through the mechanical screw rod transmission type scraper of the optimized design, the movement stability is guaranteed by utilizing gear transmission driving, and meanwhile, the driving mechanism is arranged on one side of the scraper shaft, so that the leakage generated in the working process of the driving mechanism is effectively avoided, and the pollution to materials in the centrifuge is caused.

In the embodiment, the lifting mechanism 51 and the rotating mechanism 61 are located on the same side of the guide sleeve 2, and the lifting mechanism and the rotating mechanism can be simultaneously protected by separately providing a shield.

In a specific driving manner, the lifting mechanism 51 and/or the rotating mechanism 61 employ a hydraulic motor.

In another specific driving manner, the lifting mechanism and/or the rotating mechanism 61 employs a servo motor, and further, a reducer is mounted on the servo motor.

In order to limit the steering angle of the scraper, the rotary driving assembly of the embodiment further comprises a limiting rack 7, a sliding groove is formed in the inner wall of the protective cover 1, the sliding groove is located on one side of the rotary transmission gear 63 and extends along the tangential direction of the rotary transmission gear 63, a first limiting block and a second limiting block are respectively arranged at two ends of the sliding groove, the limiting rack 7 is slidably mounted in the sliding groove and located between the first limiting block and the second limiting block, and the limiting rack 7 is meshed with the rotary transmission gear 63; under the pushing of the rotating mechanism, when the rotating transmission gear rotates, the limiting rack is driven to move in the tangential direction of the rotating transmission gear along the sliding groove, the first limiting block and the second limiting block limit the limit moving positions of the two sides of the limiting rack at the two sides, the rotating angle of the rotating transmission gear is limited, and the maximum steering angle of the scraper shaft is controlled.

In a further specific embodiment, the first limiting block adopts a first adjusting screw 81, the second limiting block adopts a second adjusting screw 82, the two ends of the chute are respectively provided with a first adjusting screw hole and a second adjusting screw hole, the first adjusting screw 81 is installed in the first adjusting screw hole in a threaded manner and is provided with a first limiting part towards one side of the limiting rack 7, the second adjusting screw 82 is installed in the second adjusting screw hole in a threaded manner and is provided with a second limiting part towards one side of the limiting rack 7; in order to be adapted to different scraping thicknesses, the moving distance of the limiting rack is adjusted by adjusting the lengths of the first adjusting screw and the second adjusting screw, so that the maximum turning position of the scraper is adjusted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.