Harrow lifting device of thickener

Abstract

The utility model discloses a thickener rake lifting device which comprises a beam connecting frame fixed at the top of a concentration tank in a crossing manner, a harrow frame mechanism is assembled and connected to the beam connecting frame, the harrow frame mechanism comprises a lifting table, a harrow frame rotating motor is assembled and connected to the top of the lifting table, and a harrow shaft is assembled and connected to the lifting table; a harrow frame structure is fixedly mounted at the lower end of the harrow shaft; the thickener rake lifting device further comprises a lifting mechanism for automatically lifting the rake mechanism; the lifting mechanism comprises a plurality of lifting pull rods fixedly connected to the top of the lifting table, and hydraulic cylinders are installed on the tops of the lifting pull rods. The lifting platform is connected to the beam connecting frame in a sliding mode through a plurality of sliding structures, each sliding structure comprises an inner sliding groove formed in the inner side wall of the beam connecting frame and further comprises a lifting sliding base fixedly connected to the lifting platform, and the lifting sliding bases slide in the inner sliding grooves in a limited mode; according to the device, the heavy and large-size harrow frame is used for lifting a sludge layer in a simple and safe manner.

Description

Technical Field

[0001] The utility model belongs to the technical field of rake frames of thickeners, and particularly relates to a lifting device for a rake frame of a thickener. Background Art

[0002] A thickener is a device used in industry to concentrate pulp, and functions such as washing ore, separating ore, and concentrating ore are realized through the thickener. The main structure of the thickener includes a thickening tank, and a cross beam that can be passed through by manpower and materials is spanned across the top pool opening of the thickening tank. Structures such as motors are installed on the cross beam, and during the working process, the rake frame located in the thickening tank is driven by the motor to rake and wash the ore in the thickening tank by using the rotating rake frame.

[0003] However, during the process of raking and washing ore, it is often necessary to adjust the height of the rake frame. For example, when the mud deposited at the bottom of the pool is too much and too thick, if the rake frame cannot be lifted, the rake frame is easily buried in the deposited mud. Under the obstruction of the mud, it is very difficult for the rake frame to rotate. In severe cases, it is not only easy to cause deformation and fracture of the steel beam structure of the rake frame, but also the motor may be burned out due to excessive motor load.

[0004] Therefore, during the actual working process, it is necessary to lift the rake frame to avoid a thick silt layer and achieve flexible rotary raking and washing. However, since the thickening tank is often relatively large, the corresponding rake frame is also very large in size, resulting in a very large weight of the rake frame.

[0005] Therefore, during the actual working process, it is very difficult to lift the large-sized and heavy rake frame to a certain height. This is not only due to the large size and heavy weight of the rake frame, but also because the rake frame is located in a large thickening tank, and it is very difficult for construction equipment to perform lifting operations outside the thickening tank. Summary of the Utility Model

[0006] Based on the above background, the purpose of the utility model is to provide a lifting device for a rake frame of a thickener.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A lifting device for a rake frame of a thickener includes a connecting beam frame fixedly spanned at the top position of a thickening tank;

[0009] A rake frame mechanism is assembled and connected to the connecting beam frame. The rake frame mechanism includes a lifting platform, a rake frame rotating motor is assembled and connected to the top of the lifting platform, and a rake shaft is assembled and connected to the lifting platform;

[0010] A rake frame structure is fixedly installed at the lower end of the rake shaft;

[0011] The lifting device for the rake frame of the thickener further includes a lifting mechanism for automatically lifting the rake frame mechanism;

[0012] The lifting mechanism includes a number of lifting tie rods fixedly connected to the top of the lifting platform, and a hydraulic cylinder is installed at the top of the lifting tie rod;

[0013] The lifting platform is slidably connected to the connecting beam frame through a number of sliding structures. The sliding structure includes an inner sliding groove opened on the inner side wall of the connecting beam frame. The sliding structure also includes a lifting sliding seat fixedly connected to the lifting platform, and the lifting sliding seat is limited to slide in the inner sliding groove;

[0014] During the working process, with the cooperation of the hydraulic cylinder, the lifting platform is driven to lift. During the lifting process of the lifting platform, the rake frame mechanism rises and falls relative to the thickener.

[0015] Preferably, the connecting beam frame includes connecting beam plates arranged at intervals before and after, and end connecting beams are welded at both ends of the connecting beam plates;

[0016] Convex beam plates are welded on the end connecting beams, and the convex beam plates are fixedly installed on the top of the pool mouth of the thickener.

[0017] Preferably, lifting convex seats protruding upward are integrally formed at the center of the top and the center of the bottom of the connecting beam plate. The lower end of the inner sliding groove is opened on the lifting convex seat at the lower end position, and the upper end groove opening of the inner sliding groove is opened at the top of the lifting convex seat at the upper end position.

[0018] Preferably, two lifting sliding seats arranged at intervals left and right are respectively fixedly connected to the front and rear side walls of the lifting platform;

[0019] Inner guide rods for slidably connecting the lifting sliding seats are fixedly connected in the inner sliding groove.

[0020] Preferably, triangular platforms are respectively fixedly connected to both sides of the top of the connecting beam plate, and a horizontal connecting platform is fixedly connected between the tops of the triangular platforms;

[0021] The lifting tie rod is slidably connected to the horizontal connecting platform; the top of the lifting tie rod is fixedly installed on the plunger rod of the hydraulic cylinder through a connecting flange.

[0022] Preferably, the hydraulic cylinder is fixedly connected to the top of the horizontal connecting platform through a fixing frame.

[0023] Preferably, the rake frame structure includes V-shaped rake frames symmetrically arranged on both sides, and both ends of the V-shaped rake frames are respectively welded on the rake shafts;

[0024] Rake rod structures are fixedly connected to the V-shaped rake frames.

[0025] Preferably, the V-shaped rake frame includes an upper horizontal frame part, and a lower inclined part is integrally formed at the outer end of the upper horizontal frame part;

[0026] The inner ends of the upper horizontal frame part and the lower inclined part are fixed on the rake shaft;

[0027] The rake bar structure includes a number of first rake bars fixedly connected to the top position of the upper horizontal frame part;

[0028] The rake bar structure further includes a number of second rake bars fixedly connected to the two side walls of the lower inclined part.

[0029] Preferably, the first rake bar is vertically welded to the upper horizontal frame part;

[0030] The second rake bar is vertically welded to the lower inclined part;

[0031] The heights of the second rake bars are different.

[0032] The utility model has the following beneficial effects:

[0033] 1. During the working process, when it is found that the thickness of the sludge at the bottom of the pool is large and the resistance of rotary rake washing is large, the lifting mechanism can be used to lift the rake frame structure above the sludge layer in a simple and flexible manner. Specifically, through the lifting pull rod, a hydraulic cylinder is installed at the top of the lifting pull rod. During the working process, with the cooperation of the four hydraulic cylinders, the heavy rake frame structure can be lifted out of the sludge layer in a simple, effective and stable manner.

[0034] 2. The V-shaped rake frame includes an upper horizontal frame part, and the outer end of the upper horizontal frame part is integrally formed with a lower inclined part; as well as the first rake bar and the second rake bar structure. The above structure realizes a rake frame structure with a simple structure design, which reduces the weight and size of the rake frame structure to facilitate lifting.

[0035] At the same time, through the first rake bar and the second rake bars with different height designs, while simplifying the rake bar structure and reducing the weight, the rake washing effect is avoided from being reduced. Specifically, during the working process, the pulp is fully raked and washed through the first rake bar and the second rake bars. Specifically, the vertically arranged and inclined first rake bar and second rake bars rake the pulp in different directions. During this process, during the rake washing process, the pulp is fully mixed, and continuously mixed and raked to improve the rake washing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0037] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present invention;

[0038] Figure 2 This is a schematic structural diagram of the lifting mechanism in the embodiment of the present utility model;

[0039] Figure 3 This is a schematic diagram of the decentralized structure of the lifting mechanism in the embodiment of the present utility model;

[0040] Figure 4 This is a schematic structural diagram of the hydraulic cylinder in the embodiment of the present utility model;

[0041] Figure 5 In the embodiment of the present utility model Figure 1 This is a schematic structural diagram from another perspective.

[0042] The realization of the object, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0046] Embodiment 1

[0047] As Figures 1 - 5As shown in the figure, a rake frame lifting device for a thickener includes a connecting beam frame 1 fixedly installed across the top of the thickener tank. Specifically, it has the same structure as the existing connecting beam frame 1 on the thickener tank for people and materials to pass through. The above-mentioned connecting beam frame 1 includes connecting beam plates arranged at intervals front and back. Both ends of the connecting beam plates are welded with end connecting beams; a convex beam plate 11 is welded on the end connecting beam, and the convex beam plate 11 is fixedly installed on the top of the tank mouth of the thickener tank. According to the existing method, the convex beam plate 11 is anchored on the top of the tank mouth of the thickener tank to realize spanning the tank mouth through the connecting beam frame 1.

[0048] The above-mentioned connecting beam frame 1 is assembled and connected with a rake frame mechanism 2. The rake frame mechanism 2 includes a lifting platform 32. The top of the lifting platform 32 is assembled and connected with a rake frame rotating motor 25. A rake shaft 21 is assembled and connected on the lifting platform 32. Specifically, in the same way as the existing method, a bearing is installed on the lifting platform 32, and the rake shaft 21 is rotatably connected to the bearing and fixed on the bearing (the inner ring of the bearing). At the same time, in the same way as the existing method, the output end of the above-mentioned rake frame rotating motor 25 is fixed on the top of the rake shaft 21.

[0049] The lower end of the rake shaft 21 is fixedly installed with a rake frame structure; the rake frame structure is located in the thickener tank.

[0050] The above-mentioned thickener rake frame lifting device further includes a lifting mechanism for automatically lifting the rake frame mechanism. Through the lifting mechanism, when it is found that the thickness of the sludge at the bottom of the tank is large and the resistance of the rotary rake washing is large during the working process, the rake frame structure can be lifted above the sludge layer in a simple and flexible manner.

[0051] Specifically, the lifting mechanism includes four lifting pull rods 33 fixedly connected to the top of the lifting platform 32 (two lifting pull rods 33 are distributed on the front and back sides of the lifting platform 32 and arranged at intervals left and right), and a hydraulic cylinder 31 is installed at the top of the lifting pull rod 33.

[0052] Specifically, triangular platforms 11 are respectively fixedly connected to both sides of the top of the connecting beam plate. A horizontal connecting platform 13 is fixedly connected between the tops of the triangular platforms 11; the lifting pull rod 33 is slidably connected to the horizontal connecting platform 13 (there is enough distance between the horizontal connecting platform 13 and the motor, and the motor rotates with the lifting platform 32 during the lifting process); the top of the lifting pull rod 33 is fixedly installed on the plunger rod of the hydraulic cylinder 31 through a connecting flange A. At the same time, the hydraulic cylinder 31 is fixedly connected to the top of the horizontal connecting platform 13 through a fixing frame.

[0053] Specifically, the fixing frame includes an ear seat fixedly connected to the top of the cylinder barrel of the hydraulic cylinder 31. A horizontal pin rod 311 is threadedly connected to the ear seat, and a support screw rod 312 is threadedly connected downward to the horizontal pin rod 311. The support screw rod is fastened to the top of the horizontal connecting platform 13.

[0054] During the implementation process, with the cooperation of four hydraulic cylinders 31, the heavy rake frame structure can be lifted out of the sludge layer in a simple, effective and stable manner.

[0055] Embodiment 2

[0056] As Figures 1 - 5 shown, on the basis of the structure of Embodiment 1, in order to increase the sliding stability of the lifting platform 32 during the lifting process of the rake frame structure, the lifting platform 32 is slidably connected to the connecting beam frame 1 through a plurality of sliding structures.

[0057] Specifically, the sliding structure includes an inner sliding groove 121 opened on the inner side wall of the connecting beam frame 1. The sliding structure further includes a lifting sliding seat 321 fixedly connected to the lifting platform 32. The lifting sliding seat 321 is limited to slide in the inner sliding groove 121 (normally, the lifting sliding seat 321 supports at the bottom of the inner sliding groove 121).

[0058] During the working process, with the cooperation of the hydraulic cylinder, the lifting platform 32 is driven to lift. During the lifting process of the lifting platform 32, the rake frame mechanism rises and falls relative to the thickener.

[0059] Specifically, lifting convex seats 12 protruding upward are integrally formed at the center of the top and the center of the bottom of the connecting beam plate (for increasing the lifting range). The lower end of the inner sliding groove 121 is opened on the lifting convex seat 12 located at the lower end position, and the upper end slot of the inner sliding groove 121 is opened at the top of the lifting convex seat 12 at the upper end position.

[0060] At the same time, two lifting sliding seats 321 arranged at intervals left and right are respectively fixedly connected to the front and rear side walls of the lifting platform 32; an inner guide rod 322 slidably connecting the lifting sliding seats 321 is fixedly connected inside the inner sliding groove 121.

[0061] During the working process, the lifting platform 32 can maintain very high stability and accuracy during the lifting process through the lifting sliding seat 321 - inner guide rod 322 - inner sliding groove 121 structure.

[0062] Embodiment 3

[0063] As Figures 1 - 5 shown, on the basis of the structure of Embodiment 2 and on the basis of the structure of Embodiment 1, the rake frame structure includes V-shaped rake frames 22 symmetrically arranged on the front and rear sides. The two ends of the V-shaped rake frame 22 are respectively welded to the rake shaft 21; rake rod structures are fixedly connected to the V-shaped rake frames 22.

[0064] The shape of the V-shaped rake frame 22 is:

[0065] The V-shaped rake frame 22 includes an upper horizontal frame portion, and a lower inclined portion is integrally formed at the outer end of the upper horizontal frame portion; the inner ends of the upper horizontal frame portion and the lower inclined portion are fixed on the rake shaft 21; the rake bar structure includes a plurality of first rake bars 23 fixedly connected to the top position of the upper horizontal frame portion; the rake bar structure further includes a plurality of second rake bars 24 fixedly connected to the side walls on both sides of the lower inclined portion. Specifically, the first rake bar 23 is vertically welded to the upper horizontal frame portion; the second rake bar 24 is vertically welded to the lower inclined portion; the heights of the second rake bars 24 are different.

[0066] Through the above structure, a rake frame structure with a simple structure design is realized to reduce the weight and size of the rake frame structure for convenient lifting.

[0067] At the same time, by the first rake bar 23 and the second rake bars 24 with different height designs, while simplifying the rake bar structure and reducing the weight, the rake washing effect is avoided from being reduced. Specifically, during the working process, the pulp is fully raked and washed by the first rake bar 23 and the second rake bars 24. Specifically, the vertically arranged and inclined first rake bar 23 and second rake bars 24 rake the pulp in different directions. During this process, during the rake washing process, the pulp is fully mixed, and continuously mixed and raked to improve the rake washing efficiency.

[0068] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A thickener rake lifting device, characterized in that: It includes a connecting beam frame fixed across the top of the concentrator tank; The connecting beam frame is equipped with a rake frame mechanism, the rake frame mechanism includes a lifting platform, the top of the lifting platform is equipped with a rake frame rotating motor, and the lifting platform is equipped with a rake shaft; A rake frame structure is fixedly installed at the lower end of the rake shaft; The concentrator rake lifting device also includes a lifting mechanism for automatically lifting and lowering the rake mechanism; The lifting mechanism includes a plurality of lifting rods fixedly connected to the top of the lifting platform, and a hydraulic cylinder is installed on the top of the lifting rod; The lifting platform is slidably connected to the connecting beam frame through a plurality of sliding structures, wherein the sliding structure comprises an inner sliding groove provided on the inner side wall of the connecting beam frame, and the sliding structure further comprises a lifting slide seat fixedly connected to the lifting platform, and the lifting slide seat is limitedly slid in the inner sliding groove; During the working process, with the cooperation of the hydraulic cylinder, the lifting platform is driven to rise and fall. During the lifting process of the lifting platform, the rake frame mechanism rises and falls relative to the thickening tank.

2. The thickener rake lifting device according to claim 1, characterized in that: The connecting beam frame comprises connecting beam plates arranged at intervals in front and behind, and end connecting beams are welded at both ends of the connecting beam plates; A convex beam plate is welded on the end connecting beam, and the convex beam plate is fixedly installed on the top of the pool mouth of the concentration tank.

3. The thickener rake lifting device according to claim 2, characterized in that: The top center and the bottom center of the connecting beam plate are integrally formed with a lifting boss protruding upward, the lower end of the inner slide groove is opened on the lifting boss located at the lower end position, and the upper end notch of the inner slide groove is opened on the top of the lifting boss at the upper end position.

4. The thickener rake lifting device according to claim 3, characterized in that: The front and rear side walls of the lifting platform are respectively fixedly connected to two lifting slides spaced apart from each other on the left and right sides; An inner guide rod which is slidably connected to the lifting slide seat is fixedly connected in the inner slide groove.

5. The thickener rake lifting device according to claim 2, characterized in that: The two sides of the top of the connecting beam plate are respectively fixedly connected with triangular platforms, and the tops of the triangular platforms are fixedly connected with horizontal connecting platforms; The lifting rod is slidably connected to the horizontal connecting platform; the top of the lifting rod is fixedly installed on the plunger rod of the hydraulic cylinder through a connecting flange.

6. The thickener rake lifting device according to claim 5, characterized in that: The hydraulic cylinder is fixedly connected to the top of the horizontal connecting platform through a fixing frame.

7. The thickener rake lifting device according to claim 1, characterized in that: The rake frame structure comprises a V-shaped rake frame symmetrically arranged on both sides, and the two ends of the V-shaped rake frame are respectively welded to the rake shaft; A rake rod structure is fixedly connected to the V-shaped rake frame.

8. The thickener rake lifting device according to claim 7, characterized in that: The V-shaped rake frame comprises an upper horizontal frame portion, and a lower inclined portion is integrally formed at the outer end of the upper horizontal frame portion; The inner ends of the upper horizontal frame portion and the lower inclined portion are fixed on the rake shaft; The rake rod structure includes a plurality of first rake rods fixedly connected to the top position of the upper horizontal frame portion; The rake rod structure also includes a plurality of second rake rods fixedly connected to the side walls on both sides of the lower inclined portion.

9. The thickener rake lifting device according to claim 8, characterized in that: The first rake bar is vertically welded to the upper horizontal frame portion; The second rake bar is vertically welded to the lower inclined portion; The second rake bars have different heights.

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