A high-efficiency screening bar vibrating screen

Abstract

The utility model discloses a rod-type vibrating screen for efficient screening, which relates to the technical field of mine crushing. It comprises a screen frame, wherein a front support leg and a rear support leg are respectively arranged on the left side and the right side of the bottom of the screen frame, and support springs are arranged at the connection between the front support leg, the rear support leg and the screen frame. A plurality of grate plate structures are arranged inside the screen frame, and the grate plate structure comprises a grate plate body, and a plurality of grate bars are arranged on the grate plate body, and grate bar gaps are arranged between the grate bars. Grate plate vertical ribs are welded at the bottom of both ends of the grate plate body, and a support beam is arranged at the bottom end of the grate plate vertical rib, and a plurality of threaded holes are arranged on the support beam. An exciter is arranged at the lower part of the grate plate structure, and a coupling is connected to the right end of the exciter, and a motor is connected to the right end of the coupling. The utility model has a simple structure and is convenient for disassembly and assembly, saves production cost, avoids the clogging of the grate plate gap by materials, and greatly improves the screening efficiency of materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine crushing, and particularly relates to a high-efficiency screening bar-type vibrating screen. Background Art

[0002] The bar vibrating screen is one of the most important equipment in the field of mining crushing. It is often used in the first screening process of the crushing production line, mainly for screening slag or small materials. The main features of the bar screen are large processing capacity and not easy to block the holes. It is suitable for separation, classification and effective screening of high-moisture and high-viscosity materials, and has a wide range of applications.

[0003] However, as far as the current market is concerned, the screen plates of the bar vibrating screens on the market are basically of an integral structure, which is inconvenient to disassemble and assemble; the manufacturing difficulty is relatively large and the cost is relatively high; the bar grate plate is not designed reasonably, is easy to be blocked, and has a low screening efficiency; and each time it is replaced, the entire bar grate plate needs to be replaced, which results in a long downtime and a great waste of manpower, material and financial resources; therefore, it is very necessary to provide a bar vibrating screen with a simple structure, easy disassembly and assembly, low production cost, high screening efficiency and not prone to blocking. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the prior art and to provide a bar-type vibrating screen which has the advantages of simple structure, convenient assembly and disassembly, low production cost, high screening efficiency and low material blocking.

[0005] The purpose of the utility model is achieved as follows: a rod-type vibrating screen for efficient screening, which comprises a screen frame, a front support leg and a rear support leg are respectively arranged on the left side and the right side of the bottom of the screen frame, support springs are arranged at the connection between the front support leg, the rear support leg and the screen frame, a plurality of grate plate structures are arranged inside the screen frame, the grate plate structure comprises a grate plate body, a plurality of grate bars are arranged on the grate plate body, grate bar gaps are arranged between the grate bars, grate plate vertical ribs are welded at the bottom of both ends of the grate plate body, a support beam is arranged at the bottom of the grate plate vertical rib, a plurality of threaded holes are arranged on the support beam, an exciter is arranged at the lower part of the grate plate structure, a coupling is connected to the right end of the exciter, and a motor is connected to the right end of the coupling.

[0006] Preferably, the vertical ribs of the grate plate are fixedly connected to the support beams by means of fixing bolts, and the support beams at both ends of the grate plate structure are fixedly connected to the side walls of the screen frame by means of fixing bolts.

[0007] Preferably, the fixing bolts pass through threaded holes on the support beams to form a fixed connection with the side walls of the screen frame, and the bottom of each grate bar on the grate plate structure is fixedly connected to the screen frame via fixing bolts.

[0008] Preferably, the grate plate structure is a stepped structure, and the grate plate structures are laid inside the screen frame from top to bottom in a stepped structure between each other.

[0009] Preferably, the gap between the grate bars is a conical structure, with a small gap at the inlet and a large gap at the outlet.

[0010] Preferably, the coupling is an elastic coupling.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The grate plate structure of the utility model adopts a stepped structure design. When a large piece of material moves from the upper grate plate to the lower grate plate, a collision will occur. During the collision, the material will be scattered, and the soil or stone powder wrapped on the material will be removed. In this way, the scattered small materials will leak from the gaps of the grate plates. The unscattered materials will continue to move to the next grate plate under the action of the vibrator to collide and scatter again. This avoids the blockage of the grate plate gap by the material and improves the screening efficiency.

[0013] 2. The utility model adopts a conical structure gap between the grate bars, the gap at the inlet is small, and the gap at the outlet is large, which will not cause the material to block the gap of the grate plate;

[0014] 3. The utility model adopts a modular grate plate structure design. If a certain grate plate structure is damaged during use, it only needs to be temporarily stopped to remove the damaged part of the grate plate structure, and the whole piece will not be replaced, which greatly reduces the production cost. The grate plate structure and the screen frame are connected by fixed bolts, which makes disassembly and assembly more convenient and improves replacement efficiency.

[0015] In general, the utility model has a simple structure, is easy to disassemble and assemble, saves production costs, avoids the clogging of the grate plate gaps by materials, and greatly improves the screening efficiency of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a high-efficiency screening bar-type vibrating screen.

[0017] Figure 2 It is a left view of a high-efficiency screening bar-type vibrating screen of the utility model.

[0018] Figure 3 The utility model is a structural schematic diagram of a high-efficiency screening rod-type vibrating screen grate structure.

[0019] Figure 4 It is a left view of a high-efficiency screening rod-type vibrating screen grate structure of the utility model.

[0020] In the figure: 1. screen frame 2. front support leg 3. support spring 4. rear support leg 5. grate plate structure 501. grate plate body 502. grate plate vertical rib 503. fixing bolt 504. support beam 505. grate bar 506. grate bar gap 507. threaded hole 6. coupling 7. motor 8. vibrator. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0022] like Figure 1-4 As shown, a bar-type vibrating screen for efficient screening comprises a screen frame 1, wherein the left and right sides of the bottom of the screen frame 1 are respectively provided with a front support leg 2 and a rear support leg 4, wherein the connection between the front support leg 2, the rear support leg 4 and the screen frame 1 is provided with a support spring 3, wherein a plurality of grate plate structures 5 are provided inside the screen frame 1, wherein the grate plate structure 5 comprises a grate plate body 501, wherein the grate plate body 501 is provided with a plurality of grate bars 505, wherein the grate plate body 501 is provided with a plurality of grate bars 506, wherein the grate plate body 506 is provided with a plurality of grate bars 507, wherein the grate plate body 507 is provided with a plurality of grate bars 508, wherein the grate plate body 508 is provided with a plurality of grate bars 509, wherein the grate plate body 509 is provided with a plurality of grate bars 501, wherein the grate plate body 509 is provided with a plurality of grate bars 509 ... Grate bar gaps 506 are provided between the grate bars 505, grate plate ribs 502 are welded to the bottoms of both ends of the grate plate body 501, a support beam 504 is provided at the bottom of the grate plate ribs 502, a plurality of threaded holes 507 are provided on the support beam 504, a vibrator 8 is provided at the lower part of the grate plate structure 5, a coupling 6 is connected to the right end of the vibrator 8, and a motor 7 is connected to the right end of the coupling 6.

[0023] The structural design of the grate plate vertical ribs 502 and the support beams 504 ensures the stability of the grate plate mechanism connection and further ensures the stable operation of the bar-type vibrating screen during operation.

[0024] Among them, the grate plate vertical ribs 502 and the support beams 504 are fixedly connected by fixing bolts 503, the support beams 504 at both ends of the grate plate structure 5 are fixedly connected to the side walls of the screen frame 1 by fixing bolts 503, the fixing bolts 503 pass through the threaded holes 507 on the support beams 504 to form a fixed connection with the side walls of the screen frame 1, and the bottom of each grate bar 505 on the grate plate structure 5 is fixedly connected to the screen frame 1 by fixing bolts 503.

[0025] The grate plate structure 5, the screen frame 1 and the grate bars 505 are fixedly connected by fixing bolts 503. On the one hand, the firmness and stability of the connection are guaranteed, and the stability of the operation of the rod-type vibrating screen is ensured; on the other hand, when a certain grate plate structure 5 or grate bar 505 is damaged and needs to be replaced, it is only necessary to loosen the corresponding fixing bolts 503 for disassembly and replacement, thereby improving replacement efficiency, reducing production costs, and reducing downtime.

[0026] The grate plate structure 5 is a stepped structure, and the grate plate structures 5 are laid inside the screen frame 1 from top to bottom in a stepped structure between each other;

[0027] With the stepped structure design, when large pieces of material go from the upper grate plate to the lower grate plate, a collision will occur, which will disperse the material during the collision and remove the soil or stone powder wrapped on the material. The dispersed small materials will leak through the gaps in the grate plates, and the undispersed materials will continue to go to the lower grate plate under the action of the vibrator 8 for further collision and dispersion, thus avoiding the blockage of the grate plate gaps by the material and improving the screening efficiency.

[0028] The grate bar gap 506 is a conical structure, with a small gap at the inlet and a large gap at the outlet;

[0029] By providing conical gaps between the grate bars 505, the gap at the inlet is small and the gap at the outlet is large, which will not cause the grate plate gaps to be blocked by the material.

[0030] Among them, the coupling 6 is an elastic coupling. On the one hand, it can improve the contact state of angular displacement, thereby enhancing the torque transmission capacity, so that the rod-type vibrating screen can transmit power more stably and efficiently during operation; on the other hand, it can effectively buffer the centrifugal force of the exciter 8 acting on the motor 7, reduce the load and wear of the motor 7, and thus extend the service life of the motor 7.

[0031] The working principle of the utility model is as follows:

[0032] When the utility model is in use, first start the motor 7 to rotate, and transmit the power to the vibrator 8 through the coupling 6. Under the drive of the vibrator 8, the entire rod screen body vibrates, and when the material enters the screen frame 1, under the drive of the grate plate structure 5, the large pieces of material will move forward, and the small pieces of material will leak through the gaps of the grate plate structure 5 and enter the next process; when the large pieces of material come from the upper layer of grate plates to the lower layer of grate plates, a collision will occur, and the material will be scattered during the collision, and the soil or stone powder wrapped on the material will be removed, so that the scattered small materials will leak from the gaps of the grate plates, and the undispersed materials will continue to go to the next layer of grate plates under the action of the vibrator 8 for collision and dispersion; when a certain grate plate structure 5 is damaged, it is only necessary to stop the machine briefly to loosen the corresponding fixing bolts 503 and remove the damaged part of the grate plate structure 5, and replace it with a new grate plate structure 5.

[0033] In general, the utility model has a simple structure, is easy to disassemble and assemble, saves production costs, avoids the clogging of the grate plate gaps by materials, and greatly improves the screening efficiency of materials.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-efficiency screening bar vibrating screen, comprising a screen frame (1), characterized in that: The sieve frame (1) is provided with a front support leg (2) and a rear support leg (4) on the left and right sides of the bottom, respectively; support springs (3) are provided at the connection points between the front support leg (2), the rear support leg (4) and the sieve frame (1); a plurality of grate plate structures (5) are provided inside the sieve frame (1); the grate plate structures (5) include a grate plate body (501); a plurality of grate bars (505) are provided on the grate plate body (501); the grate bars (505) and the grate bars (505) are connected to each other. 5), a grate bar gap (506) is arranged between the two ends of the grate plate body (501) and the bottom thereof are welded with grate plate vertical ribs (502), a support beam (504) is arranged at the bottom of the grate plate vertical ribs (502), a plurality of threaded holes (507) are arranged on the support beam (504), an exciter (8) is arranged at the lower part of the grate plate structure (5), a coupling (6) is connected to the right end of the exciter (8), and a motor (7) is connected to the right end of the coupling (6).

2. The high-efficiency screening bar vibrating screen according to claim 1, characterized in that: The grate plate vertical ribs (502) and the support beams (504) are fixedly connected via fixing bolts (503), and the support beams (504) at both ends of the grate plate structure (5) are fixedly connected to the side walls of the screen frame (1) via fixing bolts (503).

3. The high-efficiency screening bar vibrating screen according to claim 2, characterized in that: The fixing bolts (503) pass through the threaded holes (507) on the support beam (504) to form a fixed connection with the side wall of the screen frame (1); the bottom of each grate bar (505) on the grate plate structure (5) is fixedly connected to the screen frame (1) via the fixing bolts (503).

4. The high-efficiency screening bar vibrating screen according to claim 3, characterized in that: The grate plate structure (5) is a stepped structure, and the grate plate structures (5) are laid in a stepped structure from top to bottom inside the screen frame (1).

5. The high-efficiency screening bar vibrating screen according to claim 4, characterized in that: The grate bar gap (506) is a conical structure, with a small gap at the inlet and a large gap at the outlet.

6. The high-efficiency screening bar vibrating screen according to claim 1, characterized in that: The coupling (6) is an elastic coupling.

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