阅读说明：本技术 一种用于浓密机耙架限位的无级调心装置 (Stepless centering device for limiting rake rack of thickener ) 是由 徐军浩 袁国文 王文峰 于 2021-10-29 设计创作，主要内容包括：本发明公开了一种用于浓密机耙架限位的无级调心装置,包括：限位轴、上偏心座法兰、下偏心座上法兰、下偏心座连接轴、下偏心座下法兰、底座法兰和底座连接轴,上偏心座法兰偏心连接在限位轴的下端；下偏心座上法兰偏心连接在下偏心座连接轴的上端；上偏心座法兰、下偏心座上法兰、下偏心座下法兰和底座法兰上分别设有多个沿圆周方向均匀分布的腰形孔,单个腰形孔的跨角与相邻的两个腰形孔的间隙角相等。通过旋转上偏心座和下偏心座偏移距离、偏移角度,可以使得限位轴的轴线与浓密机耙架底部中心轴线保持同心,进而使得限位轴或套设在限位轴外侧的轴套均匀磨损,避免出现单侧快速磨损的现象发生,进而提高其使用寿命。(The invention discloses a stepless centering device for limiting a rake rack of a thickener, which comprises: the eccentric mechanism comprises a limiting shaft, an upper eccentric seat flange, a lower eccentric seat upper flange, a lower eccentric seat connecting shaft, a lower eccentric seat lower flange, a base flange and a base connecting shaft, wherein the upper eccentric seat flange is eccentrically connected to the lower end of the limiting shaft; the upper flange of the lower eccentric seat is eccentrically connected with the upper end of the connecting shaft of the lower eccentric seat; the upper eccentric seat flange, the lower eccentric seat upper flange, the lower eccentric seat lower flange and the base flange are respectively provided with a plurality of waist-shaped holes which are uniformly distributed along the circumferential direction, and the span angle of a single waist-shaped hole is equal to the clearance angle of two adjacent waist-shaped holes. Through rotating the offset distance and the offset angle of the upper eccentric seat and the lower eccentric seat, the axis of the limiting shaft and the central axis of the bottom of the rake frame of the thickener can be concentric, so that the limiting shaft or a shaft sleeve sleeved outside the limiting shaft is uniformly abraded, the phenomenon of rapid abrasion on one side is avoided, and the service life of the thickener is prolonged.)

1. The utility model provides a be used for spacing stepless aligning device of thickener rake (01), its characterized in that includes: the device comprises a limiting shaft (1), an upper eccentric seat flange (2), a lower eccentric seat upper flange (3), a lower eccentric seat connecting shaft (4), a lower eccentric seat lower flange (5), a base flange (6) and a base connecting shaft (7), wherein the upper end of the limiting shaft (1) is used for being connected with the bottom of a thickener rake frame (01), and the upper eccentric seat flange (2) is eccentrically connected with the lower end of the limiting shaft (1); the lower eccentric seat upper flange (3) is eccentrically connected to the upper end of the lower eccentric seat connecting shaft (4), and the lower eccentric seat lower flange (5) is connected to the lower end of the lower eccentric seat connecting shaft (4); the base flange (6) is connected to the upper end of the base connecting shaft (7); a plurality of waist-shaped holes (8) which are uniformly distributed along the circumferential direction are respectively formed in the upper eccentric seat flange (2), the lower eccentric seat upper flange (3), the lower eccentric seat lower flange (5) and the base flange (6), and the span angle of each waist-shaped hole (8) is equal to the clearance angle of two adjacent waist-shaped holes (8); go up eccentric seat flange (2) be used for with lower eccentric seat upper flange (3) pass through corresponding through first fastener waist shape hole (8) are connected, lower eccentric seat lower flange (5) with base flange (6) pass through corresponding through the second fastener waist shape hole (8) are connected.

2. Stepless centering device according to claim 1, characterized in that the side parts of the upper eccentric seat flange (2), the lower eccentric seat upper flange (3), the lower eccentric seat lower flange (5) and the base flange (6) are provided with position marks, respectively.

3. The stepless center adjusting device according to claim 1, wherein the upper eccentric seat flange (2) is eccentrically welded with the limiting shaft (1), both ends of the lower eccentric seat connecting shaft (4) are respectively welded with the lower eccentric seat upper flange (3) and the lower eccentric seat lower flange (5), and the base flange (6) and the base connecting shaft (7) are welded.

4. Stepless centering device according to claim 1, characterized in that the diameter of the lower eccentric seat connecting shaft (4) and the base connecting shaft (7) is larger than the diameter of the limiting shaft (1).

5. Stepless self-aligning device according to claim 1, characterized in that the outer side of the limit shaft (1) is sleeved with a bushing.

Technical Field

The invention relates to the technical field of thickeners, in particular to a stepless centering device for limiting a rake rack of a thickener.

Background

The thickener rake is generally a structure driven by hanging from the top, and in order to prevent the bottom from deflecting too much and interfering with the tank body, a limit seat is generally welded at the bottom of the tank body. After the thickener operates for a certain time, the center of the bottom of the rake frame can be deviated due to the stress release of all structural parts and other reasons, so that the limiting shaft sleeve is abraded on one side, and the service life is greatly shortened.

Disclosure of Invention

In view of this, the present invention provides a stepless center adjusting device for limiting a rake rack of a thickener, which can prevent a limiting shaft from being worn at one side, and further ensure the service life of the limiting shaft.

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

the utility model provides a stepless aligning device that is used for spacing of thickener harrow frame, includes: the upper end of the limiting shaft is used for being connected with the bottom of a rake frame of the thickener, and the upper eccentric seat flange is eccentrically connected with the lower end of the limiting shaft; the upper flange of the lower eccentric seat is eccentrically connected to the upper end of the lower eccentric seat connecting shaft, and the lower flange of the lower eccentric seat is connected to the lower end of the lower eccentric seat connecting shaft; the base flange is connected to the upper end of the base connecting shaft; the upper eccentric seat flange, the lower eccentric seat upper flange, the lower eccentric seat lower flange and the base flange are respectively provided with a plurality of waist-shaped holes which are uniformly distributed along the circumferential direction, and the span angle of each waist-shaped hole is equal to the clearance angle of two adjacent waist-shaped holes; the upper eccentric seat flange is used for penetrating through the corresponding waist-shaped hole through a first fastener to be connected with the lower eccentric seat upper flange, and the lower eccentric seat lower flange and the base flange penetrate through the corresponding waist-shaped hole through a second fastener to be connected.

Preferably, the side parts of the upper eccentric seat flange, the lower eccentric seat upper flange, the lower eccentric seat lower flange and the base flange are respectively provided with position marks.

Preferably, the upper eccentric seat flange is eccentrically welded to the limiting shaft, two ends of the lower eccentric seat connecting shaft are respectively welded to the lower eccentric seat upper flange and the lower eccentric seat lower flange, and the base flange is welded to the base connecting shaft.

Preferably, the diameters of the lower eccentric seat connecting shaft and the base connecting shaft are larger than the diameter of the limiting shaft.

Preferably, the outer side of the limit shaft is sleeved with a shaft sleeve.

Compared with the prior art, the technical scheme has the following advantages:

the invention provides a stepless aligning device for limiting a rake rack of a thickener, which comprises: the eccentric mechanism comprises a limiting shaft, an upper eccentric seat flange, a lower eccentric seat upper flange, a lower eccentric seat connecting shaft, a lower eccentric seat lower flange, a base flange and a base connecting shaft, wherein the upper eccentric seat flange is eccentrically connected to the lower end of the limiting shaft; the upper flange of the lower eccentric seat is eccentrically connected with the upper end of the connecting shaft of the lower eccentric seat; the upper eccentric seat flange, the lower eccentric seat upper flange, the lower eccentric seat lower flange and the base flange are respectively provided with a plurality of waist-shaped holes which are uniformly distributed along the circumferential direction, and the span angle of a single waist-shaped hole is equal to the clearance angle of two adjacent waist-shaped holes. Through rotating the offset distance and the offset angle of the upper eccentric seat and the lower eccentric seat, the axis of the limiting shaft and the central axis of the bottom of the rake frame of the thickener can be concentric, so that the limiting shaft or a shaft sleeve sleeved outside the limiting shaft is uniformly abraded, the phenomenon of rapid abrasion on one side is avoided, and the service life of the thickener is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a stepless centering device for limiting a rake rack of a thickener according to an embodiment of the present invention;

FIG. 2 is a flange with a waist-shaped aperture;

fig. 3 is a schematic diagram of eccentric adjustment.

The reference numbers are as follows:

01 is a thickener rake rack, and 02 is a bottom flow cylinder;

1 is spacing axle, 2 is the upper eccentric seat flange, 3 is the upper flange of lower eccentric seat, 4 is lower eccentric seat connecting axle, 5 is lower eccentric seat lower flange, 6 is the base flange, 7 is the base connecting axle, 8 is flange position sign, 9 is waist shape hole.

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.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a stepless centering device for limiting a rake rack of a thickener according to an embodiment of the present invention; FIG. 2 is a flange with a waist-shaped aperture; fig. 3 is a schematic diagram of eccentric adjustment.

The embodiment of the invention provides a stepless aligning device for limiting a thickener rake rack 01, which comprises: the upper eccentric seat flange 2 is eccentrically connected to the lower end of the limiting shaft 1, the limiting shaft 1 is preferably welded with the upper eccentric seat flange 2, the upper eccentric seat welded by the upper eccentric seat flange 2 can rotate 360 degrees along the central axis of the upper eccentric seat flange 2, and therefore the offset between the axis of the limiting shaft 1 and the axis of the lower eccentric seat lower flange 5 is adjusted (the adjustable range is 0-2L); the upper flange 3 of the lower eccentric seat is eccentrically connected with the upper end of the connecting shaft 4 of the lower eccentric seat, the lower flange 5 of the lower eccentric seat is connected with the lower end of the connecting shaft 4 of the lower eccentric seat, the lower eccentric connecting shaft is preferably welded with the upper flange 3 of the lower eccentric seat and the lower flange 5 of the lower eccentric seat, and the lower eccentric seat formed by welding the upper eccentric seat and the lower eccentric seat can drive the upper eccentric seat to rotate relative to the base 360 along the central axis of the lower flange 5 of the lower eccentric seat, so that the offset directions of the axis of the limiting shaft 1 and the axis of the flange 6 of the base (the adjustable range is 0-360 degrees) are adjusted; the base flange 6 is connected to the upper end of a base connecting shaft 7, welding is preferred, the base connecting shaft 7 is used for being welded to the bottom of the underflow cylinder 02, and the diameters of the lower eccentric base connecting shaft 4 and the base connecting shaft 7 are preferably larger than that of the limiting shaft 1, so that the supporting strength of the structure is improved; a plurality of waist-shaped holes 9 which are uniformly distributed along the circumferential direction are respectively arranged on the upper eccentric seat flange 2, the lower eccentric seat upper flange 3, the lower eccentric seat lower flange 5 and the base flange 6, and the span angle of a single waist-shaped hole 9 is equal to the clearance angle of two adjacent waist-shaped holes 9, so that 360-degree stepless adjustment can be realized when the mating flanges rotate relatively; the upper eccentric seat flange 2 is used for being connected with the lower eccentric seat upper flange 3 through a first fastener passing through the corresponding waist-shaped hole 9, the lower eccentric seat lower flange 5 and the base flange 6 are connected through a second fastener passing through the corresponding waist-shaped hole 9, and the first fastener and the second fastener are preferably bolts. Through the offset distance and the offset angle of the upper eccentric seat and the lower eccentric seat in rotation, the axis of the limiting shaft 1 and the central axis of the bottom of the thickener rake rack 01 are kept concentric, so that the limiting shaft 1 or a shaft sleeve sleeved on the outer side of the limiting shaft 1 is uniformly abraded, the phenomenon of rapid abrasion on one side is avoided, and the service life of the novel thickener rake rack is prolonged.

Position marks 8 are respectively arranged on the side portions of the upper eccentric seat flange 2, the lower eccentric seat upper flange 3, the lower eccentric seat lower flange 5 and the base flange 6 so as to conveniently adjust the relative angle between the flanges according to the indication position.

As shown in fig. 3, the offset value to be adjusted is δ, the offset amount of the central axis between the limiting shaft 1 in the upper eccentric seat and the upper eccentric seat flange 2 is L, the offset amount of the central axis between the lower eccentric seat upper flange 3 in the lower eccentric seat and the lower eccentric seat lower flange 5 in the lower eccentric seat is L, the included angle to be adjusted of the position identification part of the upper eccentric seat and the lower eccentric seat can be obtained by calculation as θ, the relative angle θ between the upper eccentric seat and the lower eccentric seat is adjusted to obtain the required offset distance δ value, and the relative adjustment angle between the lower eccentric seat and the base can be obtained by calculation through the θ value obtained by calculation and the actually required offset angle.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The stepless centering device for limiting the rake rack of the thickener provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.