Screening device of limestone secondary crusher
By designing and installing screen plates with an angle of 30°≤α≤40° in the limestone secondary crusher, the problem of inability to effectively distinguish fine materials and coarse materials in the prior art is solved, effective screening of stone materials is achieved, the load of crusher is reduced, and the production efficiency is improved.
Patent Information
- Application Number
- CN202421006925.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing production process cannot effectively distinguish between fine and coarse materials in stone, resulting in increased crusher load and reduced production efficiency.
A screening device for a limestone secondary crusher is designed, including a screen plate with an installation angle of 30°≤α≤40°, a fixed component and a connecting component. The stone entering the secondary crusher is screened through the screen plate to separate small particles and large particles of stone.
Through the use of the screening device, the working load of the crusher can be effectively reduced, the efficiency of crushing stones can be improved, and the size of the stone particles can meet the requirements.
Smart Images
Figure CN222817001U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of crusher screening devices, in particular to a screening device of a secondary limestone crusher. Background Art
[0002] A crusher is a device used to crush stones. In mining, crushers are often used to crush stones.
[0003] The inventors found that in order to ensure the crushing effect of the stone and make the particle size of the crushed stone meet the requirements, it is necessary to use multiple crushers for multi-stage crushing, that is, after the stone is initially crushed by the upper-level crusher, the crushed stone is input to the lower-level crusher. However, after being crushed by the upper-level crusher, some of the stone has been crushed into fine material with a particle size that meets the requirements and does not need to be crushed again. The existing production process does not distinguish between fine material and coarse material that still needs to be crushed, and directly inputs both into the lower-level crusher, which increases the load of the crusher and reduces production efficiency. Utility Model Content
[0004] The utility model aims to provide a screening device for a secondary limestone crusher, which can screen the stone materials entering the crusher at this level.
[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: the embodiment of the present application provides a screening device for a limestone secondary crusher, including a screen plate, a fixing assembly and a connecting assembly. The screen plate is configured to have an installation angle of α, α satisfies, 30°≤α≤40°. The fixing assembly includes a fixing portion and a connecting bolt, the fixing portion includes a first wall and a second wall arranged oppositely, the screen plate is clamped between the first wall and the second wall, the first wall, the second wall and the screen plate are respectively coaxially provided with connecting holes, and the connecting bolts are passed through the first wall, the second wall and the screen plate. The connecting assembly connects the fixing assembly and the crusher.
[0006] In some embodiments, a plurality of fixing components are arranged around the circumference of the sieve plate, and a plurality of connecting components are arranged correspondingly, and the connecting components include a connecting column, a supporting portion, and a contact component. The connecting column is connected to the fixing portion, and the connecting column is provided with a sliding hole, and the extending directions of the sliding holes of the plurality of connecting columns intersect at one point, the supporting portion is penetrated through the sliding hole, and the contact component is arranged on the supporting portion, and the plurality of contact components cooperate to fix the sieve plate.
[0007] In some embodiments, the contact member is rotationally connected to the abutment portion.
[0008] In some embodiments, a flexible buffer layer is provided on a side of the contact component facing the location where the sieve plate is fixed.
[0009] In some embodiments, the contact component includes a main body, a rotating part and a limiting part. The main body is connected to the abutting part, the main body is provided with a notch through groove, the rotating part is partially accommodated in the notch through groove, and the inner circumferential wall of the notch through groove is an incomplete cylindrical shape. The limiting part surrounds the axis of the notch through groove, and the inner wall surface of the notch through groove is provided with a plurality of first limiting grooves, the first limiting grooves extend to the edge of the main body, the rotating part is provided with a second limiting groove, the second limiting groove extends to the edge of the rotating part, the second limiting groove is selectively arranged opposite to the first limiting groove, and the limiting part is inserted into the first limiting groove and the second limiting groove.
[0010] In some embodiments, the main body and the rotating part are respectively provided with flexible buffer layers, and the thickness of the flexible buffer layer of the rotating part is smaller than the thickness of the flexible buffer layer of the rotating part.
[0011] In some embodiments, the connection assembly further includes a strap, the abutment portion is provided with a through hole, and the strap is passed through the through hole.
[0012] In some embodiments, the sieve plate includes a plate body, the plate body is provided with a plurality of sieve holes, and inner wall surfaces adjacent to the sieve holes are transitioned through arc surfaces.
[0013] The utility model has the following beneficial effects:
[0014] 1. Pour the stones onto the screen plate. Small particles of stone can fall through the screen holes, and large particles of stone can leak out from the lower side of the screen plate. By setting the feed port of the crusher on the lower side of the screen plate, small particles and large particles of stone can be separated. Large particles of stone enter the crusher and are crushed again, which reduces the workload of the crusher and improves the efficiency of stone crushing.
[0015] 2. When the installation angle α satisfies 30°≤α≤40°, the stone can slide down the screen plate and the screen plate can achieve a good screening effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the matching structure of the screening device and the crusher of the limestone secondary crusher of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the fixing component and the connecting component of the utility model;
[0018] Figure 3 It is a structural schematic diagram of the contact component of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the screen plate of the utility model.
[0020] Figure numbers: 1-screen plate, 2-crusher, 3-first wall, 4-connecting bolts, 5-second wall, 6-abutment portion, 7-binding belt, 8-connecting column, 9-contact component, 10-main body, 11-rotating portion, 12-first limiting groove, 13-limiting portion, 14-flexible buffer layer, 15-plate body, 16-screen hole. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.
[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] See also Figure 1 and Figure 2 The embodiment of the present application provides a screening device for a limestone secondary crusher, including a screen plate 1, a fixing assembly and a connecting assembly. The screen plate 1 is configured to be installed at an angle of α, α satisfies, 30°≤α≤40°. The fixing assembly includes a fixing portion and a connecting bolt 4, the fixing portion includes a first wall 3 and a second wall 5 arranged oppositely, the screen plate 1 is clamped between the first wall 3 and the second wall 5, the first wall 3, the second wall 5 and the screen plate 1 are respectively coaxially provided with connecting holes, and the connecting bolt 4 is passed through the first wall 3, the second wall 5 and the screen plate 1. The connecting assembly connects the fixing assembly and the crusher 2.
[0024] The installation angle refers to the angle between the sieve plate 1 and the horizontal plane after it is fixed. For example, α can be 30°, 35° or 40°.
[0025] The inventor has found through experiments that by tilting the sieve plate 1 and pouring stones onto the sieve plate 1, small particles of stone can fall through the sieve holes 16, and large particles of stone can leak out from the lower side of the sieve plate 1. By setting the feed port of the crusher 2 at the lower side of the sieve plate 1, small particles and large particles of stone can be separated, and large particles of stone can enter the crusher 2 for further crushing, thereby reducing the workload of the crusher 2 and improving the stone crushing efficiency.
[0026] When the installation angle of the sieve plate 1 is too large, the stone slides down the sieve plate 1 quickly, reducing the screening effect. When the installation angle of the sieve plate 1 is too small, the stone may not be able to slide on the sieve plate 1. When the installation angle α satisfies 30°≤α≤40°, the stone can slide down the sieve plate 1, and the sieve plate 1 can achieve a good screening effect.
[0027] The connecting hole of the sieve plate 1 can be a sieve hole 16 of the sieve plate 1 or a hole opened separately on the sieve plate 1 .
[0028] The sieve plate 1 can be fixed to the fixing portion by passing the connecting bolt 4 through the connecting holes of the first wall 3, the second wall 5 and the sieve plate 1. The rod of the connecting bolt 4 can be provided with a nut, and the limiting effect of the nut prevents the connecting bolt 4 from being separated from the connecting hole.
[0029] Conversely, the screen plate 1 can be removed from between the first wall 3 and the second wall 5 by removing the connecting bolts 4 from the connecting holes.
[0030] The fixing assembly can be fixed to the crusher 2 through the connecting assembly, so that the screen plate 1 can be crushed by the crusher 2 .
[0031] See also Figure 2 In some embodiments, a plurality of fixing components are arranged around the circumference of the sieve plate 1, and a plurality of connecting components are arranged correspondingly, and the connecting components include a connecting column 8, abutting portion 6, and a contact component 9. The connecting column 8 is connected to the fixing portion, and the connecting column 8 is provided with a sliding hole, and the extending directions of the sliding holes of the plurality of connecting columns 8 intersect at one point, the abutting portion 6 is penetrated through the sliding hole, and the contact component 9 is arranged on the abutting portion 6, and the plurality of contact components 9 cooperate to fix the sieve plate 1.
[0032] The abutting portion 6 is inserted into the sliding hole, so that the abutting portion 6 can move relative to the connecting column 8 .
[0033] The extending directions of the sliding holes of the plurality of connecting columns 8 intersect at one point, so that the plurality of abutting portions 6 can be closed or separated.
[0034] Limiting bosses can be provided on both sides of the sliding hole of the abutment portion 6, so that the abutment portion 6 cannot be separated from the sliding hole. At the same time, when the multiple abutment portions 6 are closed to a certain extent, the limiting effect of the limiting bosses can prevent the multiple abutment portions 6 from further closing, so that the screen plate 1 can be fixed.
[0035] The plurality of contact members 9 are closed so that the screen plate 1 can be fixed. For example, when the screen plate 1 is fixed to the crusher 2, the plurality of contact members 9 can be closed to clamp the crusher 2 so that the screen plate 1 can be fixed to the crusher 2.
[0036] The installation angle of the screen plate 1 can be ensured by reasonably setting parameters such as the connection angle between the connection column 8 and the fixing part and the contact position between the contact part 9 and the crusher 2.
[0037] See also Figure 2 In some embodiments, the contact component 9 is rotatably connected to the abutment portion 6 .
[0038] The contact member 9 is rotatably connected to the abutment portion 6 , so that the contact member 9 can rotate relative to the abutment portion 6 according to the outer wall shape of the crusher 2 , thereby increasing the contact area between the contact member 9 and the crusher 2 , and further increasing the fixing reliability of the screen plate 1 .
[0039] See also Figure 2 In some embodiments, a flexible buffer layer 14 is provided on the side of the contact component 9 facing the fixing location of the sieve plate 1 .
[0040] The flexible buffer layer 14 may be rubber.
[0041] On the one hand, the flexible buffer layer 14 can connect the screen plate 1 and the crusher 2 in a floating manner, so that the vibration of the crusher 2 during operation can be transmitted to the screen plate 1, thereby increasing the screening effect. On the other hand, it can play a compensatory role, that is, for crushers 2 of different sizes, the compression degree of the flexible buffer layer 14 is different, so that the connecting assembly can fix the screen plate 1 to different crushers 2. On the other hand, the friction between the contact component 9 and the crusher 2 is increased, thereby improving the fixing reliability.
[0042] See also Figure 3 In some embodiments, the contact component 9 includes a main body 10, a rotating part 11 and a limiting part 13. The main body 10 is connected to the abutting part 6, and the main body 10 is provided with a notch through groove, and the rotating part 11 is partially accommodated in the notch through groove, and the inner circumferential wall of the notch through groove is an incomplete cylindrical shape. The limiting part 13 surrounds the axis of the notch through groove, and the inner wall surface of the notch through groove is provided with a plurality of first limiting grooves 12, and the first limiting grooves 12 extend to the edge of the main body 10, and the rotating part 11 is provided with a second limiting groove, and the second limiting groove extends to the edge of the rotating part 11, and the second limiting groove is selectively arranged opposite to the first limiting groove 12, and the limiting part 13 is inserted into the first limiting groove 12 and the second limiting groove.
[0043] The rotating portion 11 is partially accommodated in the notch through slot, and is partially disposed outside the notch through slot through an opening of the notch through slot, so that the rotating portion 11 is rotatably connected to the main body 10 .
[0044] When the rotating part 11 rotates relative to the main body 10, the first limiting groove 12 corresponding to the second limiting groove can be changed. When the rotating part 11 rotates to the specified position, the limiting part 13 is inserted into the first limiting groove 12 and the second limiting groove. At this time, the rotating part 11 cannot rotate relative to the main body 10.
[0045] The opening of the first limiting groove 12 may face the center of the notch through groove, and the opening of the second limiting groove may face the inner wall of the notch through groove, so that the limiting portion 13 can be inserted into the first limiting groove 12 and the second limiting groove at the same time.
[0046] The portion of the rotating part 11 accommodated in the notch through groove may be a cylindrical structure adapted to the notch through groove structure.
[0047] The structure in which the rotating part 11 can rotate relative to the main body 10 allows the shape of the contact member 9 to be adjusted to match the contour of the crusher 2, thereby increasing the contact area between the contact member 9 and the crusher 2 and further increasing the fixing effect.
[0048] The rotating parts 11 can be symmetrically arranged on both sides of the main body 10 .
[0049] See also Figure 3 In some embodiments, the main body 10 and the rotating part 11 are respectively provided with a flexible buffer layer 14 , and the thickness of the flexible buffer layer 14 of the rotating part 11 is less than the thickness of the flexible buffer layer 14 of the rotating part 11 .
[0050] In the embodiment where the rotating part 11 is symmetrically arranged on both sides of the main body 10, when the rotating part 11 and the main body 10 form a curved structure, the flexible buffer layer 14 of the rotating part 11 is thicker, which allows the rotating part 11 to contact the outer wall of the crusher 2 more closely, thereby improving the fixing effect.
[0051] Furthermore, in order to increase the rotation range of the rotating part 11 relative to the main body 10, the thickness of the rotating part 11 can be smaller than the thickness of the main body 10, and the flexible buffer layer 14 of the rotating part 11 is thicker, which can reduce the risk of deformation of the rotating part 11.
[0052] See also Figure 2 In some embodiments, the connection assembly further includes a strap 7, the abutment portion 6 is provided with a perforation, and the strap 7 is passed through the perforation.
[0053] In the embodiment where the connection assembly includes a plurality of abutment portions 6 , the strap 7 is passed through the through holes of each abutment portion 6 in sequence.
[0054] Both ends of the strap 7 can be connected to the tightener, so that the ring structure formed by the strap 7 can be reduced. The structure and working principle of the tightener are well known to those skilled in the art and will not be described in detail here.
[0055] On one hand, the strap 7 can form an annular structure and be sleeved on the crusher 2, thereby improving the fixing effect. On the other hand, by shrinking the annular structure formed by the strap 7, each abutment portion 6 can be closed at the same time, thereby improving the fixing efficiency.
[0056] See also Figure 4In some embodiments, the sieve plate 1 includes a plate body 15, and the plate body 15 is provided with a plurality of sieve holes 16, and the adjacent inner wall surfaces of the sieve holes 16 are transitioned through arc surfaces.
[0057] The sieve holes 16 are used to screen the stones, that is, small particles of stones can fall out of the sieve holes 16 , while large particles of stones cannot pass through the sieve holes 16 .
[0058] The mesh openings 16 may be rectangular.
[0059] The adjacent inner wall surfaces of the sieve holes 16 are transitioned through arc surfaces, so that the sieve holes 16 can be easily processed on the plate body 15 by machining equipment.
[0060] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.
Claims
1. A screening device for a limestone secondary crusher, characterized in that: include: A sieve plate (1), wherein the sieve plate (1) is configured to be installed at an angle α, wherein α satisfies 30°≤α≤40°; A fixing assembly, comprising a fixing portion and a connecting bolt (4), wherein the fixing portion comprises a first wall (3) and a second wall (5) arranged opposite to each other, wherein the sieve plate (1) is sandwiched between the first wall (3) and the second wall (5), wherein the first wall (3), the second wall (5) and the sieve plate (1) are respectively coaxially provided with connecting holes, and wherein the connecting bolt (4) is passed through the first wall (3), the second wall (5) and the sieve plate (1); A connecting component connects the fixing component and the crusher (2).
2. The screening device of the limestone secondary crusher according to claim 1, characterized in that: The fixing components are arranged in plurality around the circumference of the sieve plate (1), and the connecting components are arranged in plurality accordingly, and the connecting components include: A connecting column (8) connected to the fixing portion, the connecting column (8) being provided with a sliding hole, and the extending directions of the sliding holes of a plurality of the connecting columns (8) intersecting at one point; A supporting portion (6) is inserted into the sliding hole; A contact component (9) is arranged on the abutting portion (6), and a plurality of the contact components (9) cooperate to fix the sieve plate (1).
3. The screening device of the limestone secondary crusher according to claim 2, characterized in that: The contact component (9) is rotatably connected to the abutment portion (6).
4. The screening device of the limestone secondary crusher according to claim 2, characterized in that: A flexible buffer layer (14) is provided on the side of the contact component (9) facing the fixing position of the sieve plate (1).
5. The screening device of the limestone secondary crusher according to claim 2, characterized in that: The contact component (9) comprises: A main body (10) connected to the abutting portion (6); The rotating part (11) is provided with a notch through groove on the main body (10), the rotating part (11) is partially accommodated in the notch through groove, and the inner peripheral wall of the notch through groove is in an incomplete cylindrical shape; A limiting portion (13) surrounds the axis of the notch through groove, and the inner wall surface of the notch through groove is provided with a plurality of first limiting grooves (12), the first limiting grooves (12) extending to the edge of the main body (10), and the rotating portion (11) is provided with a second limiting groove, the second limiting groove extending to the edge of the rotating portion (11), the second limiting groove is selectively arranged opposite to the first limiting groove (12), and the limiting portion (13) is inserted into the first limiting groove (12) and the second limiting groove.
6. The screening device of the limestone secondary crusher according to claim 5, characterized in that: The main body (10) and the rotating part (11) are respectively provided with a flexible buffer layer (14), and the thickness of the flexible buffer layer (14) of the rotating part (11) is smaller than the thickness of the flexible buffer layer (14) of the rotating part (11).
7. The screening device of the limestone secondary crusher according to claim 2, characterized in that: The connection assembly further comprises a strap (7), the abutment portion (6) is provided with a through hole, and the strap (7) is passed through the through hole.
8. The screening device of the limestone secondary crusher according to claim 1, characterized in that: The sieve plate (1) comprises a plate body (15), the plate body (15) being provided with a plurality of sieve holes (16), and adjacent inner wall surfaces of the sieve holes (16) being transitioned through arc surfaces.