CN114985252A - Horizontal reciprocating type vibrating screen - Google Patents

Abstract

The present invention relates to a horizontal reciprocating type vibrating screen, which may include: the base is U-shaped; a screen box horizontally reciprocatingly installed in the base and provided with a screen mesh opened to a predetermined depth from a top thereof and a discharge port at a first end thereof; a plurality of hydraulic cylinders mounted on the base and in driving connection with the second end of the screen box; a first spring mounted between the base and the first end; a second spring mounted between the base and the second end; and the roller is fixedly arranged on the bottom of the screen box, so that the screen box is supported on the base in a rolling manner. The energy-saving vibrating screen is different from the traditional vibrating screen in that the motor drives the vibrating screen to vibrate, the energy supply mode of the hydraulic system is adopted for movement, the energy loss of the vibrating screen is reduced, meanwhile, sliding friction is changed into rolling friction, energy can be effectively saved, and the screening cost is reduced.

Description

A horizontal reciprocating vibrating screen

technical field

The invention belongs to the field of ore screening equipment, in particular to a horizontal reciprocating vibrating screen.

Background technique

The vibrating screen is mainly suitable for the orderly separation of mineral powders of different particle sizes in industrial mines, so as to improve the integration and utilization of mineral resources. The principle is to use the reciprocating whirling vibration generated by the vibrator excitation to work. The upper rotating weight of the vibrator causes the screen surface to generate plane whirling vibration, while the lower rotating weight causes the screen surface to generate conical surface rotation vibration.

Most of the traditional vibrating screens are driven by motors, and the screen box forms a certain movement law through a certain arrangement. The existing vibrating screens on the market mainly include linear, elliptical and crank vibrating screens. These vibrating screens all require the motor to drive the overall movement of the vibrating screen through the coupling, which requires a large amount of electricity to be produced, and the energy consumption is high. At the same time, most of the motion trajectories of the vibrating screen have a component of vertical motion, and high-frequency vibration can easily cause the vertical collapse of the ore, which is a potential safety hazard. In addition, for the coupling connection of the vibrating screen, long-term production is likely to cause the coupling key connection to be disconnected due to high-speed rotation, resulting in damage to the entire vibrating screen, affecting production continuity and high maintenance costs.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a horizontal reciprocating vibrating screen to solve the above problems. For this reason, the technical scheme adopted in the present invention is as follows:

A horizontal reciprocating vibrating screen, which may include:

a base, the base is U-shaped;

a screen box, the screen box is installed in the base in a horizontal reciprocating motion and is provided with a screen mesh and a discharge opening, wherein the screen mesh is at a predetermined depth from the top opening of the screen box, and the discharge a port at the first end of the screen box;

a plurality of hydraulic cylinders mounted on the base and in driving connection with the second end of the screen box;

a first spring mounted between the base and the first end;

a second spring mounted between the base and the second end; and

A roller is fixedly mounted on the bottom of the screen box, so that the screen box is rolled and supported on the base.

In a preferred embodiment, the hydraulic cylinders are arranged on the front and rear sides of the second spring.

In a preferred embodiment, the number of the hydraulic cylinders on each side is 3, which are arranged in a row.

In a preferred embodiment, the hydraulic cylinder is mounted on the base through a mounting bracket, and the mounting bracket is fixedly penetrated on the end plate of the base.

In a preferred embodiment, a pusher contact groove is fixedly installed on the second end, and the pusher of the hydraulic cylinder is received in the pusher contact groove when pushed out.

In a preferred embodiment, the overall stiffness of the first spring and the second spring is the same.

In a preferred embodiment, the first spring includes a set of quadruple spring units and two sets of double spring units located on the front and rear sides of the set of quadruple spring units, and the second spring includes two sets Quadruple spring cells, where each spring cell has the same stiffness.

In a preferred embodiment, the bottom in the screen box slopes downwardly from the second end to the first end. Preferably, the angle of inclination is 2-10 degrees.

In a preferred embodiment, a plurality of reinforcing ribs are fixed on the outer wall of the screen box.

In a preferred embodiment, the screen box has a U-shaped cross-section.

In a preferred embodiment, a screen mesh installation plate is fixed on the inner side of the screen box, the screen mesh installation plate is provided with a plurality of first screen mesh installation holes, and the frame of the screen mesh is provided with The plurality of first screen mesh installation holes correspond one-to-one with a plurality of second screen mesh installation holes.

In a preferred embodiment, the screen consists of criss-cross ribs.

In a preferred embodiment, a pair of chutes are fixed on the base, and the rollers roll along the chutes. Preferably, there are 3 said rollers in each said chute.

The present invention is different from the traditional vibrating screen driven by the motor to vibrate up and down, and uses the hydraulic system to supply energy to vibrate horizontally, and has the following advantages:

1) In the traditional vibrating screen, each vibration must overcome the weight of the vibrating screen box and the ore to move up and down, and the present invention only needs to overcome the rolling friction with the ground, and the energy utilization efficiency is greatly improved;

2) Due to the vertical motion of the traditional vibrating screen, the ore up and down vibrates easily due to the inclination of the ore surface and bounces off; and the present invention adopts horizontal vibration, the ore has no vertical motion component, and does not bounce, greatly improving the safety of the equipment;

3) The traditional vibrating screen needs to use a coupling, and the key connection is prone to fatigue fracture after long-term use; and the present invention no longer requires the use of couplings and other components, which simplifies the structure and saves equipment costs on the one hand, and on the other hand. , the production will not be interrupted due to the damage of the coupling, the stability of the equipment and the continuity of production will be improved, and the production cost will be reduced.

Description of drawings

1 is a schematic perspective view of a horizontal reciprocating vibrating screen according to an embodiment of the present invention;

Fig. 2 is the front view of the horizontal reciprocating vibrating screen shown in Fig. 1;

Fig. 3 is the enlarged view of A place in Fig. 2;

Fig. 4 is the sectional schematic diagram of the horizontal reciprocating vibrating screen shown in Fig. 1;

Fig. 5 is a partial cutaway perspective view of the horizontal reciprocating vibrating screen shown in Fig. 1, showing the structure of the hydraulic cylinder;

Fig. 6 is another partial perspective view of the horizontal reciprocating vibrating screen shown in Fig. 1, showing the structure of the discharge end of the screen box;

Fig. 7 is another partial perspective view of the horizontal reciprocating vibrating screen shown in Fig. 1, showing the structure of the discharge end of the screen box.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solutions of the present invention.

In the following description, for the purpose of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Unless the context requires otherwise, throughout the specification and claims, the word "comprising" and variations thereof, such as "comprising" and "having", should be construed in an open, inclusive sense, i.e., should be interpreted as "including, but not limited to".

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Additionally, the particular features, structures or characteristics may be combined in any manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a" and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.

In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but "front", "rear", "left", "right", "outer", "inner" should be "," "outward", "inward", "up", "down" and other words are to be understood as convenient terms, and should not be understood as limiting words.

Furthermore, the terms "horizontal", "vertical", "overhanging" etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

As shown in Figures 1 and 2, a horizontal reciprocating vibrating screen may include:

Base 1, the base 1 is U-shaped;

The screen box 2 is installed in the base 1 in a horizontal reciprocating motion and is provided with a screen mesh 21 and a discharge opening 22, wherein the screen mesh 1 is opened from the top of the screen box 2 23 a predetermined depth to prevent the ore from jumping out during the screening process; the outlet 22 is located at the first end (for example, the right end) of the screen box 2;

a plurality of hydraulic cylinders 3 mounted on the base 1 and in driving connection with the second end (eg, the left end) of the screen box 2;

The first spring 4, the first spring 4 is installed between the base 1 and the first end of the screen box 2, that is, one end of the first spring 4 is against the right end plate of the base 1, and the other end is against the screen box 2 the right end face of ;

The second spring 5, the second spring 5 is installed between the base 1 and the second end of the screen box 2, that is, one end of the second spring 5 is against the left end plate of the base 1, and the other end is against the screen box 2 the left end face of ; and

A roller 6 is fixedly installed on the bottom of the screen box 2 , so that the screen box 2 is supported on the base 1 in a rolling manner.

The hydraulic cylinder 3, the first spring 4 and the second spring 5 form a horizontal hydraulic vibration system, which drives the screen box 2 to reciprocate left and right. When working, the material to be sorted (for example, ore) is poured into the screen 21 from the top opening, the pusher 31 of the hydraulic cylinder 3 is pushed out, and the screen box 2 is pushed to the right. At this time, the vibrating screen leaves the balance position, Squeeze the first spring 4, then the push head 31 retracts, the screen box 2 moves to the left under the action of the restoring force of the first spring 4, and squeezes the second spring 5, and the restoring force of the second spring 5 can make the Screen box 2 is pushed to the right. Therefore, the screen box 2 can reciprocate left and right (horizontally) under the action of the hydraulic cylinder 3 , the first spring 4 and the second spring 5 . Compared with the traditional motor-driven vibrating screen, the method of using the hydraulic oil circuit to provide the initial thrust can more effectively reduce the power consumption. At the same time, due to the installation of the roller 6, the friction force to be overcome by the vibration of the vibrating screen can be greatly reduced, and the energy consumption can be further reduced. The specific calculation is as follows:

Assuming that the amplitude of the traditional vibrating screen is 50cm in the vertical direction, the amplitude of the horizontal vibrating screen of the present invention is 50cm in the horizontal direction, the total weight of the screen box and the ore under the rated working state is 1.2T, and the energy conversion efficiency of the motor and the hydraulic cylinder is the same, The coefficient of rolling friction is u=0.08-0.15, and the friction of the rotor system of the traditional vibrating screen is ignored.

The energy required for a traditional vibrating screen to do one vibration cycle is:

W ₁ =mgh=0.5×1.2×1000×10=6000J

The energy required for one vibration cycle of the horizontal vibrating screen is:

W ₂ =umgs=0.15×1.2×1000×10×0.5=900J

The useful power consumption ratio of the two is: W2/W1=0.15. It can be seen that compared with the existing motor-driven vibrating screen, the energy saving effect is obvious.

As shown in Figures 1 and 7, the base 1 can be welded by steel plates, or can be formed by the ground and walls. The right end plate of the base 1 is provided with a material receiving port 12 which communicates with the discharge port 22 of the screen box. The conveyor belt, the truck or the receiving box (not shown) can receive the screened material from the material receiving port 12. , for further transfer or storage, etc.

In order to ensure that the rollers 6 can only roll in the left and right directions, a pair of sliding grooves 11 are fixed on the base 1, and the rollers 6 are received in the sliding grooves 11 to roll along the sliding grooves 11. The chute 11 can be made of channel steel. In the embodiment shown, the number of rollers 6 is six, and each chute 11 accommodates three rollers 6 .

As shown in Figures 1-3, a plurality of reinforcing ribs 25 are welded on the outside of the screen box 2 of the vibrating screen to improve the strength of the entire screen box 2. The reinforcing rib 25 includes two end reinforcing ribs and a middle reinforcing rib. At the same time, a mounting bottom plate 8 is welded to the lower end of the reinforcing rib 25 , and the mounting bottom plate 8 is used for mounting the roller 6 . Specifically, the top plate 901 of the roller fixing frame 9 is fixed on the mounting bottom plate 8 by bolts 902 , and the roller 6 is mounted on the roller fixing frame 9 through a bearing. In order to improve the strength of the roller holder 9 , the roller holder 9 is further provided with a reinforcing rod 903 . Preferably, the reinforcing ribs 25, the roller fixing frame 9 and the mounting base plate 8 are made of steel plates.

As shown in Figures 1 and 4, the screen box 2 has a U-shaped cross-section, that is, its bottom is arc-shaped to facilitate the accumulation of materials. Preferably, the bottom 27 in the screen box 2 is inclined downward at a certain angle from left to right, that is, the discharge port 22 is the lowest, so that the material can be smoothly left from the discharge port 22. Usually, the angle of inclination should not be too large; preferably, the angle of inclination is 2-10 degrees.

As shown in FIGS. 5 and 6 , a screen mounting plate 26 is fixed on the inner side of the screen box 2 , and a plurality of first screen mounting holes 261 are provided on the screen mounting plate 26 ; the frame of the screen 21 is provided with The plurality of second screen mesh installation holes 211 correspond one-to-one with the plurality of first screen mesh installation holes 261 . During installation, the screen 21 is placed on the screen mounting plate 26 and the second screen mounting holes 211 and the first screen mounting holes 261 are aligned, and then fixed with screws. The screen 21 may be composed of criss-cross rib plates to have greater load-bearing capacity. The screen mesh 21 can choose a suitable mesh size according to actual needs. Usually, the mesh size of the screen mesh 21 is not larger than 30 mm.

The hydraulic cylinder 3 is embedded in the end plate of the base 1 . Specifically, the six hydraulic cylinders 3 are mounted on the mounting bracket 7, and the mounting bracket 7 is fixedly penetrated in the left end plate of the base 1. The six hydraulic cylinders 3 are divided into two rows and installed on the front and rear sides of the second spring 5 respectively. When the movement of the screen box 2 is affected by the friction of the base 1, when the amplitude and speed of the reciprocating motion are weakened, the hydraulic cylinder 3 needs to extend the pusher 31 again to press the first spring 4 to the initial compressed state, and then quickly retreat to let the screen The box 2 is capable of fast reciprocating motion. The action interval and extension length of the hydraulic cylinder 3 are set by the electronic control system provided by the manufacturer.

Preferably, the hydraulic cylinder 3 is a quick push hydraulic cylinder (for example, the model is FA100-125) to improve the working efficiency.

In order to avoid the wear of the pusher 31, a pusher contact groove 24 is fixedly installed on the second end of the screen box 2, and the pusher 31 of the hydraulic cylinder 3 is received in the pusher contact groove 24 when it is pushed out. The size of the pusher contact groove 24 is slightly larger than that of the pusher 31 . Typically, the pusher contact groove 24 may be made of wear-resistant rubber.

As shown in Figures 1, 2, 5 and 7, the first spring 4 includes a set of quadruple spring cells and two sets of double spring cells located on the front and rear sides of the set of quadruple spring cells, a total of 8 spring cells , and the second spring 5 includes two sets of quadruple spring units, a total of 8 spring units, wherein the stiffness of each spring unit is the same. Therefore, the overall stiffness of the first spring 4 and the second spring 5 is the same. It should be understood that the total stiffness of the first spring 4 and the second spring 5 may also be different, that is, the stiffness of the springs at both ends of the screen box 2 may be different. Both the first spring 4 and the second spring 5 are compression springs.

Preferably, both ends of the first spring 4 and the second spring 5 are installed between the base 1 and the screen box 2 through corresponding mounting plates 41 and 51, respectively. The mounting plates 41 and 51 are fixed on the base 1 and the screen box 2 (eg, the reinforcing ribs 25 at both ends of the screen box 2 ) by screws and are provided with corresponding spring mounting holes (not shown) for easy installation. It should be understood that the first spring 4 and the second spring 5 may adopt other known spring mounting methods.

The vibrating screen of the present invention is different from the motor of the traditional vibrating screen to drive up and down vibration, and uses the hydraulic system to supply energy for horizontal vibration, and has the following advantages:

1) In the traditional vibrating screen, each vibration must overcome the weight of the vibrating screen box and the ore to move up and down, and the present invention only needs to overcome the rolling friction with the ground, the energy utilization efficiency is greatly improved, and the energy saving effect is obvious;

2) Due to the vertical movement of the traditional vibrating screen, the ore up and down vibrates easily due to the inclination of the ore surface and is easily bounced; and the present invention adopts the horizontal vibration, the ore has no vertical motion component, and will not bounce, thus greatly improving the safety;

3) The traditional vibrating screen needs to use a coupling, and the key connection is prone to fatigue fracture after long-term use; and the present invention no longer requires the use of couplings and other components, which simplifies the structure and saves equipment costs on the one hand, and on the other hand. , the production will not be interrupted due to the damage of the coupling, the stability of the equipment and the continuity of production will be improved, and the production cost will be reduced.

The preferred embodiments of the present invention have been described in detail above, but it should be understood that those skilled in the art can make various changes or modifications to the present invention after reading the above teaching contents of the present invention. Such equivalents also fall within the scope defined by the claims appended hereto.

Claims (10)

1. A horizontally reciprocating vibratory screen, comprising:

the base (1), the said base (1) takes the form of U-letter;

a screen box (2), the screen box (2) being horizontally reciprocatingly mounted in the base (1) and provided with a screen (21) and a discharge port (22), wherein the screen (21) is at a predetermined depth from a top opening (23) of the screen box (2), the discharge port (22) being located at a first end of the screen box (2);

the hydraulic cylinders (3) are mounted on the base (1) and are in driving connection with the second end of the screen box (2);

a first spring (4), said first spring (4) being mounted between said base (1) and said first end;

a second spring (5), said second spring (5) being mounted between said base (1) and said second end; and

the roller (6) is fixedly arranged on the bottom of the sieve box (2), so that the sieve box (2) is supported on the base (1) in a rolling mode.

2. The horizontal reciprocating shaker as claimed in claim 1, characterised in that the hydraulic cylinders (3) are arranged on both the front and rear sides of the second spring (5).

3. The horizontal reciprocating shaker as claimed in claim 1, characterised in that said hydraulic cylinder (3) is mounted on said base (1) by means of a mounting bracket (7), said mounting bracket (7) being fixedly threaded on an end plate of said base (1).

4. The horizontal reciprocating shaker as claimed in claim 1, wherein a pusher head contact slot (24) is fixedly mounted on the second end, the pusher head (31) of the hydraulic cylinder (3) being received in the pusher head contact slot (24) upon ejection.

5. The horizontal reciprocating shaker as claimed in claim 1, wherein the first spring (4) comprises a set of four-spring unit and two sets of two-spring unit located at front and rear sides of the set of four-spring unit, and the second spring (5) comprises two sets of four-spring unit, wherein each spring unit has the same stiffness.

6. The horizontal reciprocating shaker as claimed in claim 1, wherein the bottom inside the shaker box (2) slopes downwards from the second end to the first end.

7. The horizontally reciprocating vibrating screen according to claim 1, characterised in that a plurality of strengthening ribs (25) are fixed to the outer wall of the screen box (2).

8. The horizontal reciprocating type vibration screen of claim 1, wherein a screen mounting plate (26) is fixedly provided at an inner side of the screen box (2), a plurality of first screen mounting holes (261) are provided on the screen mounting plate (26), and a plurality of second screen mounting holes (211) corresponding to the plurality of first screen mounting holes (261) one to one are provided on a frame of the screen (21).

9. The horizontal reciprocating shaker as claimed in claim 1 or 12, characterised in that the screen mesh (21) consists of criss-cross ribs.

10. The horizontally reciprocating vibrating screen according to claim 1, characterized in that a pair of chutes (11) are fixed to the base (1), the rollers (6) rolling along the chutes (11), wherein there are 3 rollers (6) in each chute (11).

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