CN217041439U

CN217041439U - Harrow gets mechanism and thickener

Info

Publication number: CN217041439U
Application number: CN202123229219.3U
Authority: CN
Inventors: 字文军; 张正才; 赵杰; 李晓闻; 叶娇; 李亮
Original assignee: YCIH Installation Co Ltd
Current assignee: YCIH Installation Co Ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-07-26
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a raking mechanism, which comprises a rake arm and a plurality of scraping plates arranged below the rake arm, wherein the rake arm is rotatably provided with rotating shafts which are perpendicular to the bottom surface of the scraping plates and have the same number as the scraping plates, and the scraping plates are fixedly arranged at the lower end of the rotating shafts; the harrow arm is fixedly provided with a track along the length direction, the track is internally provided with a rack which can slide along the length direction of the harrow arm, and the upper end of the rotating shaft is provided with a gear which can be meshed with the rack. The technical scheme of the utility model through set up the track on the harrow arm, rotatory to the radius vertically position with the pivot of crossing this scraper blade top from the operating position by the rack slip drive scraper blade in the track, like this, the resistance that receives the sedimentary ore pulp of bottom of the pool when the scraper blade gyration will reduce greatly, makes things convenient for the thickener to start, stops to appear pressing the harrow phenomenon.

Description

Harrow gets mechanism and thickener

Technical Field

The utility model relates to a thickener field, in particular to mechanism and thickener are got to harrow.

Background

The thickener is a solid-liquid separation device based on gravity settling effect, and underflow ore pulp thickened at the bottom of a conical tank is discharged from a central flow port at the bottom of the tank under the action of a raking mechanism which is arranged on the circular tank and rotates around the circle center at a low speed.

In daily operation, when the ore pulp density of bottom of the pool deposit is too big or the lamination is too thick, the harrow mechanism can press the harrow phenomenon that the unable start-up appears because the scraper resistance is too big, serious can damage the harrow mechanism, and conventional solution is to set up on the thickener and carry the harrow mechanism, in case press the harrow phenomenon to appear, in time promote the harrow mechanism, wait its normal rotation again slowly put down gradually. This method has the disadvantages that: because need mention thick machine central transmission assembly and harrow mechanism together, mention heavy, in order to guarantee that the harrow mechanism safety and stability moves, mention speed very slowly, mention the cost also very high, moreover to carrying the structural strength requirement of harrow mechanism very high, even so, after thick machine long-term the use, it must suffer the corruption of pond liquid to carry harrow mechanism, spare part intensity descends, mention central transmission assembly once more and harrow the potential safety hazard appears probably when getting the mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a harrow gets mechanism and thickener, aims at solving the problem among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a raking mechanism, which comprises a rake arm and a plurality of scrapers arranged below the rake arm, wherein the rake arm is rotatably provided with rotating shafts perpendicular to the bottom surface of the scrapers and equal in number to the scrapers, and the scrapers are fixedly arranged at the lower end of the rotating shafts;

the harrow arm is fixedly provided with a track along the length direction of the harrow arm, the track is internally provided with a rack which can slide along the length direction of the harrow arm, and the upper end of the rotating shaft is provided with a gear which can be meshed with the rack.

In one embodiment, the track is provided with a sliding groove extending along the length direction of the harrow arm, and a sliding block fixedly connected with the rack is slidably mounted in the sliding groove.

In one embodiment, the cross section of the track is in a U shape, the sliding block comprises an inner sliding block and an outer sliding block, the inner sliding block is located in the track and the sliding groove, the outer sliding block is located outside the track, the inner sliding block and the outer sliding block are detachably and fixedly connected, and the rack is fixedly connected to the inner sliding block.

In one embodiment, the rack is engaged with only one gear at a time, and the gear is driven by the rack to rotate the scraper from the working position to a position perpendicular to the radius of the rotating shaft passing above the scraper.

In one embodiment, the scraper is arc-shaped, and the radius of the arc-shaped scraper is equal to the radius of the rotation track of the scraper.

In one embodiment, pulleys are arranged at two ends of the track in the length direction, pull ropes are tightly sleeved on the pulleys, the racks are fixedly connected with the pull ropes, and the pulleys rotate to drive the pull ropes to pull the racks to slide along the length direction of the harrow arm.

In one embodiment, the rack is engaged with all of the gears.

In an embodiment the rail is located above the rabble arm, the rail and the rabble arm being connected by a fixing rod.

Furthermore, the utility model also provides a thickener, get the mechanism including supporting the fixed axle and around the harrow that supports the fixed axle gyration, the harrow is got the mechanism and is passed through the connecting rod and support the fixed axle and be connected, the harrow is got the mechanism and is got the mechanism for aforementioned harrow.

In one embodiment, the track is located above the water surface when the thickener is in operation.

The technical scheme of the utility model through set up the track on the harrow arm, rotatory to the radius vertically position with the pivot of crossing this scraper blade top from the operating position by the rack slip drive scraper blade in the track, like this, the resistance that receives the sedimentary ore pulp of bottom of the pool when the scraper blade gyration will reduce greatly, makes things convenient for the thickener to start, stops to appear pressing the harrow phenomenon.

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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the thickener of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of section C of FIG. 2;

FIG. 5 is an enlarged view of section D of FIG. 3;

fig. 6 is a cross-sectional view E-E of fig. 3.

The reference numerals are explained below:

1. a raking mechanism; 11. a rake arm; 12. a squeegee; 13. a rotating shaft; 14. a track; 15. a connecting rod; 16. a chute; 17. a pulley; 18. a motor; 19. fixing the rod;

2. supporting the fixed shaft; 3. pulling a rope; 4. an outer slide block; 5. an inner slide block; 6. a gear; 7. a rack; 8. the surface of the water.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Among the prior art, when the sedimentary ore pulp density of bottom of the pool is too big or the lamination is too thick, the resistance of the ore pulp that the scraper blade received is very big, causes the thickener can't start and the harrow phenomenon appears pressing, and the conventional solution is to get the mechanism with the harrow and lift together with the scraper blade, then restarts the thickener, treats that the thickener normal operating back is getting the mechanism with scraper blade and harrow and puts down, because this kind of method has with high costs, consuming time long, poor stability, the shortcoming of easily breaking down, the utility model designs a new thickener, it need not to promote the harrow and gets the mechanism and just can solve the pressure harrow problem.

As shown in fig. 1, the utility model provides a thickener, including supporting fixed axle 2 and getting mechanism 1 around the harrow that supports fixed axle 2 gyration, support fixed axle 2 and arrange along the central axis in centre of a circle pond usually, the harrow is got mechanism 1 and is connected with supporting fixed axle 2 through connecting rod 15, is scraped to bottom of the pool central authorities around supporting fixed axle 2 gyration with the sedimentary ore pulp of bottom of the pool by supporting drive arrangement drive harrow on the fixed axle 2 and is got mechanism 1, and the mouth of a river of bottom of the pool central authorities discharges at last.

As shown in fig. 2 and fig. 3, the raking mechanism 1 includes a rake arm 11 and a plurality of scraping plates 12 disposed below the rake arm 11, typically, the scraping plates 12 are arranged in a straight line along the length direction of the rake arm 11, the length direction of the rake arm 11 generally coincides with the radius direction of the circular pool, rotating shafts 13 perpendicular to the bottom surfaces of the scraping plates 12 and equal to the scraping plates 12 are rotatably mounted on the rake arm 11, typically, the bottom of the circular pool is a conical surface, the center of the bottom of the pool is the lowest, the scraping plates 12 rotate around the supporting and fixing shaft 2 to scrape the ore pulp deposited at the bottom of the pool toward the center of the bottom of the pool, and finally, the ore pulp is discharged from a flow port in the center of the bottom of the pool, the scraping plates 12 are fixedly disposed at the lower end of the rotating shafts 13, and the upper end of each scraping plate 12 is connected with a rotating shaft 13.

As shown in fig. 2 and 3, the track 14 is fixedly arranged on the rake arm 11 along the length direction thereof, preferably, the track 14 is arranged above the rake arm 11, the track 14 and the rake arm 11 are fixedly connected by a fixing rod 19, so that the track 14 can be positioned above the water surface 8 when the thickener is in operation, thereby avoiding corrosion by liquid in the tank and prolonging the service life, the rack 7 which can slide along the length direction of the rake arm 11 is arranged in the track 14, the gear 6 which can be meshed with the rack 7 is arranged at the upper end of the rotating shaft 13, when the rack 7 slides, the gear 6 can be driven to rotate, the gear 6 rotates to drive the scraper 12 to rotate by the rotating shaft 13, as is well known, when the scraper 12 is in the operation position, the radius of the rotating shaft 13 passing above the scraper 12 (i.e. the radius of the circular tank) is not perpendicular to the surface of the scraper 12, but forms an included angle smaller than 90 degrees with the scraper 12, the design is that the scraper 12 can rotate around the supporting and fixing shaft 2 to scrape the ore pulp deposited at the bottom of the tank to the center of the tank bottom, but the stress area of the scraper 12 is large, so that when the density of the ore pulp deposited at the bottom of the tank is too high or the stacking layer is too thick, the thickener cannot be started, at the moment, the resistance of the scraper 12 on the ore pulp deposited at the bottom of the tank can be greatly reduced only by controlling the rack 7 to move the driving gear 6 to rotate so that the scraper 12 rotates from the working position to the position vertical to the radius of the rotating shaft 13 above the scraper 12, the thickener is convenient to start, and after the thickener normally operates subsequently, the motor 18 is controlled to rotate reversely to drive the rack 6 to reversely slide and reset, and the rack 6 reversely slides to drive the scraper 12 to reversely rotate and return to the working position.

The mechanism 1 is got in harrow of this embodiment need not promoted, consequently adjusts the cost little, and scraper blade 12 is usually also not surpassed 90 degrees by the rotation angle that gear 6 drove, consequently can adjust scraper blade 12 fast and put in place, and weak point consuming time, rack 7 slides and the rotatory stability of pivot 13 is high, good reliability, is difficult to break down long service life.

Preferably, the scraper 12 is arc-shaped, and the radius of the arc-shaped radius is equal to the radius of the circular rotating track of the scraper 12, so that the circular rotating track of the scraper 12 coincides with the arc-shaped direction of the scraper 12 after the scraper 12 rotates from the working position to the position perpendicular to the radius of the rotating shaft 13 passing above the scraper 12, and the resistance of the scraper 12 to the ore pulp deposited at the bottom of the tank is further reduced.

In this embodiment, in order to facilitate the sliding of the rack 7, as shown in fig. 2 to 5, a sliding groove 16 extending along the length direction of the rake arm 11 is provided on the rail 14, a sliding block fixedly connected to the rack 7 is slidably installed in the sliding groove 16, further, as shown in fig. 6, the cross section of the rail 14 is U-shaped, the sliding block includes an inner sliding block 5 located in the rail 14 and the sliding groove 16 and an outer sliding block 4 located outside the rail 14, the inner sliding block 5 and the outer sliding block 4 are detachably and fixedly connected, the rack 7 is fixedly connected to the inner sliding block 5, the upper end of the rotating shaft 13 extends into the rail 14 and is fixedly installed with a gear 6, the gear 6 is engaged with the rack 7, the sliding block slides along the sliding groove 16 to drive the rack 7, and the driving gear 6 drives the scraper 12 to rotate around the rotating shaft 13.

In the embodiment, at the same time, the rack 7 is meshed with only one gear 6, the gear 6 drives the scraper 12 to rotate from the working position to the position vertical to the radius of the rotating shaft 13 passing above the scraper 12 under the driving of the rack 7, as shown in fig. 4 and 5, pulleys 17 are provided at both ends of the rail 14 in the length direction, and preferably, the pulley 17 is a fixed pulley 17, the pull rope 3 is tightly sleeved on the pulley 17, one end of the pulley 17 is in transmission connection with a motor 18, the pulley 17 is driven by the motor 18 to rotate to pull the pull rope 3 to rotate around the two pulleys 17, the rack 7 is fixedly connected with the pull rope 3, the pulley 17 rotates to drive the pull rope 3 to pull the rack 7 to slide along the length direction of the harrow arm 11, preferably, the pull rope 3 is directly detachably and fixedly connected with the outer sliding block 4, and as shown in fig. 5, the sliding block is pulled by the pull rope 3 to slide so as to drive the rack 7 to move.

In the embodiment, the racks 7 are respectively adjusted from the working position to the position perpendicular to the radius of the rotating shaft 13 passing over the scrapers 12 in the process that the racks 7 slide from one end to the other end of the track 14, and since the racks 7 are only meshed with one gear 6 at the same time, the requirement on the tension of the pull rope 3 is not high, so that the raking mechanism 1 with a long rake arm 11 is very suitable for use, of course, in other embodiments, if the length of the rake arm 11 is not large, the long rack 7 can be used for driving the gear 6 to rotate, the long rack 7 is meshed with all the gears 6 at the same time, and the long rack 7 can move in the track 14 by using an air cylinder or a hydraulic cylinder arranged at the two ends of the track 14 to directly push the long rack 7 to slide in the track 14 besides the pull rope 3 shown in fig. 2-5.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A raking mechanism comprises a rake arm and a plurality of scraping plates arranged below the rake arm, and is characterized in that rotating shafts which are perpendicular to the bottom surface of the scraping plates and are equal to the scraping plates in number are rotatably arranged on the rake arm, and the scraping plates are fixedly arranged at the lower end of the rotating shafts;

the harrow arm is fixedly provided with a track along the length direction, the track is internally provided with a rack which can slide along the length direction of the harrow arm, and the upper end of the rotating shaft is provided with a gear which can be meshed with the rack.

2. The raking mechanism according to claim 1, wherein the track is provided with a sliding slot extending along the length of the rake arm, and a sliding block fixedly connected with the rack is slidably mounted in the sliding slot.

3. The raking mechanism as claimed in claim 2, wherein the cross section of the track is U-shaped, the slider comprises an inner slider located inside the track and the chute and an outer slider located outside the track, the inner slider and the outer slider are detachably and fixedly connected, and the rack is fixedly connected to the inner slider.

4. The rake mechanism of claim 1, wherein the rack engages only one gear at a time, the gear being driven by the rack to rotate the flight from the operating position to a position perpendicular to a radius of the shaft passing above the flight.

5. The raking mechanism as claimed in claim 4, wherein the scraper is arcuate with a radius equal to the radius of its own rotational path.

6. The raking mechanism as claimed in claim 4, wherein pulleys are provided at two ends of the track in the length direction, a pull rope is tightly sleeved on the pulleys, the rack is fixedly connected with the pull rope, and the pulleys rotate to drive the pull rope to pull the rack to slide along the length direction of the rake arm.

7. The rake mechanism of claim 1, wherein the rack is engaged with all of the gears.

8. The raking mechanism of claim 1, wherein the track is located above the rake arm, the track and rake arm being connected by a fixed rod.

9. A thickener comprises a supporting fixed shaft and a raking mechanism rotating around the supporting fixed shaft, wherein the raking mechanism is connected with the supporting fixed shaft through a connecting rod, and the thickener is characterized in that the raking mechanism is the raking mechanism according to any one of claims 1 to 8.

10. The thickener of claim 9, wherein said track is positioned above water level when said thickener is in operation.