Adjustable inter-axle distance roller screen

Abstract

The application discloses an adjustable shaft distance roller screen and belongs to the field of raw coal screening.The adjustable shaft distance roller screen comprises a bottom plate, a second support base, a sleeve and a lead screw.A plurality of waist grooves are arranged on the bottom plate, the second support base is fixed through the waist grooves by bolts, the sleeve is fixed between the bearing support base and the mounting plate, the sleeve is threadedly connected with the lead screw, the connecting rod in the front lead screw can be inserted into the connecting pipe in the rear lead screw, and the two lead screws are fixed by being screwed with bolts in the second fixing holes, so that the multiple roller shaft distances can be synchronously adjusted, the distance between the specified roller shafts can be adjusted, and compared with the prior art, the distance between the roller shafts can be adjusted more quickly and conveniently.

Description

Technical Field

[0001] This invention pertains to raw coal screening, specifically to an adjustable roller screen with adjustable shaft spacing. Background Technology

[0002] With the continuous development of science and technology, the use of new energy sources is gradually being recognized and accepted by people; coal, as a traditional energy source, is accounting for a decreasing proportion of total energy use; and with the profit margin of coal preparation and ore beneficiation becoming smaller and smaller, it is an important task for many coal enterprises to survive and develop by innovating and transforming existing equipment and optimizing traditional process systems to reduce coal preparation and ore beneficiation costs and improve production efficiency.

[0003] Roller screens are a common type of raw coal screening equipment. A roller screen consists of many parallel rollers with screen discs mounted on them in an alternating pattern. The rotation direction is the same as the material flow direction. Traditional material screening is carried out by screening through the spacing between roller screens. However, due to different production requirements, the screening spacing needs to be adjusted in a timely manner. Usually, the spacing adjustment requires removing or adding screen discs, which is a complicated procedure and requires a large number of workers to operate. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an adjustable roller screen with adjustable roller spacing, which makes the adjustment of roller spacing more convenient and saves manpower.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] An adjustable-shaft-gap roller screen includes multiple rollers and a base plate. Multiple screen discs are mounted on the rollers, and bearings are also provided on the rollers. A first support seat is fixed at the upper end of the base plate, and multiple second support seats are provided behind the first support seat along the direction of raw coal movement. Both the first and second support seats are used to support the bearings.

[0007] The upper part of the base plate is also provided with multiple through grooves. The second support includes a bearing support. The lower end of the bearing support is provided with a mounting plate. Bolts can pass through the grooves, the mounting plate and the bearing support in sequence, and nuts are screwed into the bolts to fix the base plate, the mounting plate and the support.

[0008] A sleeve is fixed between the mounting plate and the bearing support. The sleeve has an internal thread in its central hole and a lead screw inside. The external thread on the lead screw engages with the internal thread in the sleeve. A connecting rod and a connecting tube are respectively provided at both ends of the lead screw. For two adjacent second supports, the connecting rod on the first lead screw can be inserted into the connecting tube on the second lead screw, and they engage with each other. The connecting tube has multiple second fixing holes, which are threaded holes and communicate with the central hole. By screwing screws into the second fixing holes, the two adjacent lead screws can be fixed together.

[0009] Furthermore, the bearing support seat 31 and the mounting plate (32) can be fixedly connected by bolts, and the mounting plate 32 and the base plate 1 can be fixedly connected by bolts passing through the waist groove 12 and screwed into the mounting plate.

[0010] The beneficial effects of this invention are as follows: By setting multiple through grooves on the base plate, the second support seat is fixed by bolts passing through the grooves, and a sleeve is fixed between the bearing support seat and the mounting plate. A lead screw is threaded onto the sleeve, and the connecting rod on the first lead screw can be inserted into the connecting tube of the second lead screw and cooperate with each other. The two lead screws can be fixed by screwing bolts into the second fixing hole, thereby enabling the synchronous adjustment of the distance between multiple rollers and the adjustment of the distance between specified rollers. Compared with the prior art, the adjustment of the distance between rollers is faster and more convenient. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the base plate structure according to an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the second support structure according to an embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of the bearing support structure according to an embodiment of the present invention;

[0016] Figure 5 This is a schematic diagram of the mounting plate structure according to an embodiment of the present invention;

[0017] Figure 6This is a schematic diagram of the lead screw structure according to an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, an adjustable-shaft-gap roller screen includes multiple rollers, each equipped with a screen disc and bearings. The roller screen also includes a base plate 1, with a first support seat 2 at the upper end of the base plate 1. Multiple second support seats 3 are arranged behind the first support seat 2 along the direction of raw coal movement. The first support seat 2 is used to support the bearings on the first roller; the second support seats 3 are used to provide intermediate support for the bearings on the other rollers.

[0020] like Figure 2 As shown, a set of first fixing holes 11 is provided on the upper end of the base plate 1. The number of first fixing holes 11 in each set is at least four. By passing bolts through the first fixing holes 11 and the first support base 2 and screwing in nuts, a fixed connection between the first support base 2 and the base plate 1 can be achieved.

[0021] The upper end of the base plate 1 is also provided with multiple sets of through grooves 12, and each set contains at least four grooves 12. In this embodiment, for example... Figure 3 As shown, the second support 3 includes a bearing support 31, which is used to support and fix the bearing. The lower end of the bearing support 31 is provided with a mounting plate 32. By setting bolts to pass through the waist groove 12, the mounting plate 32 and the bearing support 31 in sequence, and screwing nuts into the bolts, the base plate 1, the mounting plate 32 and the support 31 can be fixed together. Loosening the nuts allows the position of the second support 2 fixed on the base plate 1 to be adjusted, thereby facilitating the adjustment of the distance between the rollers.

[0022] In some disclosures, the bearing support 31 and the mounting plate 32 are fixedly connected by bolts, and the mounting plate 32 and the base plate 1 are fixedly connected by bolts passing through the waist groove 12 and screwed into the mounting plate 32; so that when it is necessary to adjust the distance between the rollers, it is only necessary to loosen the bolts between the mounting plate 32 and the base plate 1, and the bearing support 31 and the mounting plate 32 will still remain fixed by bolts, thereby ensuring the integrity and stability of the second support 3;

[0023] A sleeve 33 is fixedly installed between the mounting plate 32 and the bearing support seat 31. The sleeve 33 has an internal thread in its central hole and a lead screw 34 is installed in the sleeve 33. The sleeve 33 is fitted onto the lead screw 34, and the external thread on the lead screw 34 and the internal thread in the sleeve 33 cooperate with each other. By rotating the lead screw 34, the relative movement between the lead screw 34 and the bearing support seat 31 can be realized.

[0024] like Figure 6 As shown, the two ends of the lead screw 34 are respectively provided with a connecting rod 342 and a connecting tube 341. For two adjacent second support seats 3, the connecting rod 342 in the first lead screw 34 can be inserted into the connecting tube 341 in the second lead screw 34 and they cooperate with each other. The connecting tube 341 is provided with multiple second fixing holes 343. The second fixing holes 343 are threaded holes and communicate with the center hole. By screwing screws into the second fixing holes 343, the two adjacent lead screws 34 can be fixed together. Thus, by removing and installing the screws in the second fixing holes 343, the multiple lead screws 34 can be rotated synchronously or independently.

[0025] When screws are screwed into the second fixing hole 343 to fix the multiple lead screws 34 together, the multiple lead screws 34 can rotate synchronously, thereby realizing synchronous adjustment of multiple rollers; when screws are screwed into the designated second fixing hole 343, the designated lead screws 34 can rotate independently, thereby realizing adjustment of the distance between the designated rollers; thus realizing diversified adjustment between rollers.

[0026] In this embodiment, as Figure 4-5 As shown, the lower end of the bearing support 31 is provided with a first semi-circular groove 311, and the upper end of the mounting plate 32 is provided with a second semi-circular groove 321. The sleeve 33 can cooperate with the first semi-circular groove 311 and the second semi-circular groove 321 and be fixed between the bearing support 31 and the mounting plate 32.

[0027] Working principle:

[0028] By setting multiple through grooves 12 on the base plate 1, the second support seat 3 is fixed by bolts passing through the grooves 12. A sleeve 33 is fixed between the bearing support seat 31 and the mounting plate 32. A lead screw 34 is threadedly connected to the sleeve 33. The connecting rod 342 in the first lead screw 34 can be inserted into the connecting tube 341 in the second lead screw 34 and cooperate with each other. The two lead screws 34 can be fixed by screwing bolts into the second fixing hole 343. This enables the synchronous adjustment of the distance between multiple rollers and the adjustment of the distance between specified rollers. Compared with the prior art, it makes the adjustment of the distance between rollers faster and more convenient.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An adjustable inter-axle distance roller screen comprising a plurality of rollers on which a plurality of screen decks are mounted, and a base plate (1), said rollers being provided with bearings, characterized in that, The upper end of the bottom plate (1) is fixed with a first support seat (2), and a plurality of second support seats (3) are arranged behind the first support seat (2) along the movement direction of raw coal; the first support seat (2) and the second support seat (3) are both used for supporting bearings; A plurality of groups of through waist grooves (12) are further arranged at the upper end of the bottom plate (1), the second support seat (3) comprises a bearing support seat (31), the lower end of the bearing support seat (31) is provided with a mounting plate (32), a bolt can pass through the waist groove (12), the mounting plate (32) and the bearing support seat (31) in sequence, and a nut is screwed on the bolt, so that the bottom plate (1), the mounting plate (32) and the bearing support seat (31) are fixed. A sleeve (33) is fixed between the mounting plate (32) and the bearing support seat (31), the center hole of the sleeve (33) is provided with an internal thread, a lead screw (34) is arranged in the sleeve (33), the external thread on the lead screw (34) is matched with the internal thread in the sleeve (33); the two ends of the lead screw (34) are respectively provided with a connecting rod (342) and a connecting pipe (341), for the adjacent two second support seats (3), the connecting rod (342) in the upper of the former lead screw (34) can be inserted into the connecting pipe (341) in the latter lead screw (34), and they are matched with each other; a plurality of second fixing holes (343) are arranged on the connecting pipe (341), the second fixing hole (343) is a threaded hole and is communicated with the center hole, and the adjacent two lead screws (34) are fixed by screwing a screw in the second fixing hole (343). A group of first fixing holes (11) are arranged at the upper end of the bottom plate (1), a bolt passes through the first fixing hole (11) and the first support seat (2), and a nut is screwed, so that the first support seat (2) and the bottom plate (1) are fixedly connected. The lower end of the bearing support seat (31) is provided with a first semicircular groove (311), the upper end of the mounting plate (32) is provided with a second semicircular groove (321), and the sleeve (33) can be matched with the first semicircular groove (311) and the second semicircular groove (321) and fixed between the bearing support seat (31) and the mounting plate (32).

2. An adjustable shaft spacing roller screen according to claim 1, wherein, In each group of first fixing holes, the number of first fixing holes (11) is at least four.

3. An adjustable shaft spacing roller screen according to claim 1, wherein, In each group of waist grooves, the number of waist grooves (12) is at least four.

4. An adjustable shaft spacing roller screen according to claim 1, wherein, The bearing support seat (31) and the mounting plate (32) are fixedly connected by a bolt, and the mounting plate (32) and the bottom plate (1) are fixedly connected by a bolt passing through the waist groove (12) and being screwed into the mounting plate.

5. A raw coal screening apparatus, characterized by, The roller screen of any one of claims 1-4.

6. A raw coal sizing apparatus characterized by, The roller screen of claim 5.

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