Novel electromagnetic drive spin vibration screen

Abstract

The invention relates to a novel electromagnetic drive spin vibration screen which comprises a screen frame, a support and an electromagnetic drive mechanism, the screen frame is arranged on the support, the electromagnetic drive mechanism comprises a connecting plate, an armature, an electromagnet, an elastic supporting plate and a base, the connecting plate is arranged at the bottom of the screen frame, and the base is arranged below the connecting plate. The connecting plate and the base are connected through a plurality of obliquely-arranged elastic supporting plates, the armature is arranged on the connecting plate, the electromagnet is arranged on the base, a gap is reserved between the armature and the electromagnet, and the electromagnet can be attracted to the armature. A traditional vibration motor is replaced by an electromagnetic driving mechanism, reciprocating centrifugal force is generated, so that materials are screened, the vibration amplitude and frequency can be dynamically adjusted in the equipment operation process, and the production efficiency is improved; and after electromagnetic driving is adopted, the effects of immediately starting and immediately stopping can be achieved, the equipment does not swing obviously after being stopped, and the safety of field operators is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary vibrating screens, and in particular relates to a novel electromagnetic driven rotary vibrating screen. Background Art

[0002] The vibrating screen is a high-precision fine powder screening machine with low noise, high efficiency, and a quick screen change time of 3-5 minutes. Its fully enclosed structure makes it suitable for screening and filtering materials such as granules, powders, and mucus. The vibrating screen uses an upright motor as the excitation source. Eccentric weights are mounted at the top and bottom of the motor, converting the motor's rotational motion into three-dimensional motion: horizontal, vertical, and tilted, which is then transmitted to the screen surface. Adjusting the phase angle between the top and bottom ends can change the trajectory of the material on the screen surface.

[0003] However, the existing rotary vibrating screen cannot adjust the amplitude / frequency during operation and must be shut down before adjustment, which reduces the company's production efficiency. Moreover, the rotary vibrating screen has a large swing amplitude when starting / stopping, which poses an indirect safety hazard to on-site personnel. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to address the deficiencies of the existing technology and provide a new electromagnetic driven rotary vibrating screen, which can adjust the amplitude and frequency of vibration during equipment operation, improve production efficiency and enhance production safety.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A new type of electromagnetically driven vibrating screen includes a screen frame, a bracket and an electromagnetic drive mechanism. The screen frame is arranged on the bracket. The electromagnetic drive mechanism includes a connecting plate, an armature, an electromagnet, an elastic support plate and a base. The connecting plate is arranged at the bottom of the screen frame, and the base is arranged below the connecting plate. The two are connected by multiple inclined elastic support plates. The armature is arranged on the connecting plate, and the electromagnet is arranged on the base. A gap is left between the armature and the electromagnet, and the electromagnet can be attracted to the armature.

[0007] In order to better implement the present invention, further optimization is made in the above structure, and the elastic support plate is a carbon fiber plate.

[0008] In order to better implement the present invention, further optimization is made in the above structure, so that all elastic support plates are evenly arranged along the circumferential direction, and all elastic support plates have the same inclination direction.

[0009] In order to better implement the present invention, the above structure is further optimized. An upper fixing piece is provided on the connecting plate, and the top of the elastic support plate is tiltedly provided on the upper fixing piece.

[0010] In order to better implement the present invention, the above structure is further optimized. A lower fixing piece is provided on the base, and the bottom of the elastic support plate is tiltedly provided on the lower fixing piece.

[0011] In order to better implement the present invention, further optimization is made in the above structure, and the base is a counterweight plate.

[0012] In order to better implement the present invention, further optimization is made in the above structure. The bracket includes a plurality of columns and a rubber shock-absorbing block arranged on each column. The columns are connected to the screen frame through the rubber shock-absorbing block.

[0013] In order to better realize the present invention, further optimization is made in the above structure. The screen frame includes an upper screen frame and a lower screen frame. The upper screen frame is arranged on the top of the lower screen frame. A screen is arranged between the upper screen frame and the lower screen frame.

[0014] In order to better realize the present invention, further optimization is made in the above structure, and a clamping ring assembly is provided on both the upper screen frame and the lower screen frame.

[0015] In order to better realize the present invention, further optimization is made in the above structure. A material inlet is provided on the top of the upper screen frame, and discharge ports are provided on the sides of the upper screen frame and the lower screen frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The new electromagnetic driven vibrating screen provided by the present invention replaces the traditional vibrating motor with an electromagnetic drive mechanism, and utilizes the electromagnet and the armature to continuously generate an upward and downward suction force, so that the elastic support plate is continuously deformed and reset during the intermittent process of magnetic attraction, performing a reciprocating displacement motion, and at the same time driving the screen frame to move together, generating a reciprocating centrifugal force, thereby screening materials. The amplitude and frequency of vibration can be dynamically adjusted during equipment operation to improve production efficiency. Moreover, after adopting electromagnetic drive, the effect of immediate start and immediate stop can be achieved. There is no obvious swing after the equipment stops, thereby ensuring the safety of on-site operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is an axonometric diagram of the new electromagnetic driven vibrating screen of the present invention;

[0020] Figure 2 This is the front view of the new electromagnetic driven vibrating screen of the present invention;

[0021] Figure 3 This is a top view of the new electromagnetic driven vibrating screen of the present invention;

[0022] Figure 4 yes Figure 3 Cross-sectional view of AA;

[0023] Figure 5 It is a separate structural diagram of the electromagnetic drive mechanism in the present invention.

[0024] In the picture:

[0025] 1-screen frame, 101-upper screen frame, 102-lower screen frame, 103-screen, 104-cable ring assembly, 2-bracket, 201-column, 202-rubber shock-absorbing block, 3-connecting plate, 301-upper fixing part, 4-armature, 5-electromagnet, 6-elastic support plate, 7-base, 701-lower fixing part. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise specified, the term "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention depending on the specific circumstances.

[0029] Please refer to Figure 1-Figure 5The new electromagnetic driven rotary vibrating screen provided by the present invention includes a screen frame 1, a bracket 2 and an electromagnetic drive mechanism. The screen frame 1 is arranged on the bracket 2. The electromagnetic drive mechanism includes a connecting plate 3, an armature 4, an electromagnet 5, an elastic support plate 6 and a base 7. The connecting plate 3 is arranged at the bottom of the screen frame 1, and the base 7 is arranged below the connecting plate 3. The two are connected by a plurality of inclined elastic support plates 6. The armature 4 is arranged on the connecting plate 3, and the electromagnet 5 is arranged on the base 7. A gap is left between the armature 4 and the electromagnet 5, and the electromagnet 5 can be attracted to the armature 4. The electromagnet 5 and the armature 4 continuously generate an upward and downward attraction force, and the two are continuously attracted and separated, so that the elastic support plate 6 is continuously deformed and reset during the intermittent process of magnetic attraction, and performs a reciprocating displacement motion, while driving the screen frame 1 to move together, generating a reciprocating centrifugal force, thereby performing material screening. The present application changes the strength of the magnetic force of the electromagnet 5 by adjusting the magnitude of the current during equipment operation, and can dynamically adjust the amplitude and frequency of vibration to improve production efficiency; and after adopting electromagnetic drive, the effect of immediate start and immediate stop can be achieved by connecting or cutting off the power supply, without the traditional inertial force, and there is no obvious swing after the equipment stops, thereby ensuring the safety of on-site operators.

[0030] In this embodiment, the elastic support plate 6 is made of carbon fiber plate, which has a density of only 1 / 4-1 / 5 of that of steel, but a tensile strength of 7-9 times that of steel, and an elastic modulus of up to 185,000 N / mm 2 , with stable performance in long-term use and better fatigue resistance than metal materials, making it very suitable for dynamic load environments. Moreover, all elastic support plates 6 are evenly arranged along the circumferential direction, and all elastic support plates 6 have the same inclination direction. During the reciprocating movement, the elastic support plates 6 with the same inclination direction act in the same direction of force, and the direction of the force is the same as the movement direction of the elastic support plates 6, causing the screen frame 1 above the elastic support plates 6 to simultaneously perform a slight reciprocating movement clockwise or counterclockwise, driving the material in the screen frame 1 to rotate and vibrate, so that the material is more fully stirred, thereby improving the screening efficiency.

[0031] To enhance the connection's strength, the connecting plate 3 is equipped with an upper fixing member 301, which has an inclined surface. The top of the elastic support plate 6 is tilted and positioned on the upper fixing member 301 and secured with screws. Simultaneously, the base 7 is equipped with a lower fixing member 701, which also has an inclined surface. The bottom of the elastic support plate 6 is tilted and positioned on the lower fixing member 701 and secured with screws. The use of these two fixing members provides a better support connection for the elastic support plate 6.

[0032] In order to better realize the present invention, further optimization is made in the above structure. The base 7 is a counterweight plate. The counterweight plate helps balance the exciting force by increasing the weight of the screen body, ensuring that the screen body remains stable during the vibration process and avoiding vibration instability or damage caused by weight imbalance.

[0033] The bracket 2 includes a plurality of columns 201 and a rubber shock-absorbing block 202 provided on each column 201. The columns 201 are connected to the screen frame 1 via the rubber shock-absorbing blocks 202. By providing the rubber shock-absorbing blocks 202 between the screen frame 1 and the columns 201, most vibrations are isolated, which can effectively reduce the vibration transmitted to the ground.

[0034] In this embodiment, the screen frame 1 includes an upper screen frame 101 and a lower screen frame 102. The upper screen frame 101 is arranged on the top of the lower screen frame 102, and a screen 103 is arranged between the upper screen frame 101 and the lower screen frame 102. A clamping ring assembly 104 is provided on each of the upper screen frame 101 and the lower screen frame 102 for locking the screen frame. A material inlet is provided on the top of the upper screen frame 101, and a discharge port is provided on the side of the upper screen frame 101 and the lower screen frame 102. When in use, the material enters the interior of the upper screen frame 101 from the feed port at the bottom. During the vibration process, finer particles pass through the screen 103 and enter the interior of the lower screen frame 102, thereby separating the material into large particles and small particles, and the materials are discharged separately from the two discharge ports.

[0035] During operation, the material is poured into the material inlet at the top of the upper screen frame 101. Under the vibration of the electromagnetic drive mechanism, the small particles of material pass through the screen 103 and enter the lower screen frame 102 below, and are discharged through the discharge port on the side of the lower screen frame 102; while the large particles of material are discharged through the discharge port on the side of the upper screen frame 101, thus completing the screening of the material.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A novel electromagnetically driven rotary vibrating screen, comprising a screen frame (1), a bracket (2) and an electromagnetic drive mechanism, wherein the screen frame (1) is arranged on the bracket (2), and is characterized in that: The electromagnetic drive mechanism comprises a connecting plate (3), an armature (4), an electromagnet (5), an elastic support plate (6) and a base (7); the connecting plate (3) is arranged at the bottom of the screen frame (1); the base (7) is arranged below the connecting plate (3), and the two are connected by a plurality of tilted elastic support plates (6); the armature (4) is arranged on the connecting plate (3); the electromagnet (5) is arranged on the base (7); a gap is left between the armature (4) and the electromagnet (5), and the electromagnet (5) can be attracted to the armature (4).

2. The novel electromagnetic driven vibrating screen according to claim 1 is characterized in that: The elastic support plate (6) is a carbon fiber plate.

3. The novel electromagnetic driven vibrating screen according to claim 2 is characterized in that: All the elastic support plates (6) are evenly arranged along the circumferential direction, and the inclination directions of all the elastic support plates (6) are the same.

4. The novel electromagnetic driven vibrating screen according to claim 3 is characterized by: An upper fixing piece (301) is provided on the connecting plate (3), and the top of the elastic support plate (6) is obliquely provided on the upper fixing piece (301).

5. The novel electromagnetic driven rotary vibrating screen according to claim 4 is characterized in that: A lower fixing piece (701) is provided on the base (7), and the bottom of the elastic support plate (6) is obliquely provided on the lower fixing piece (701).

6. The novel electromagnetic driven rotary vibrating screen according to claim 5 is characterized in that: The base (7) is a counterweight plate.

7. The novel electromagnetic driven vibrating screen according to claim 1 is characterized by: The support (2) comprises a plurality of columns (201) and a rubber shock-absorbing block (202) arranged on each of the columns (201); the columns (201) are connected to the screen frame (1) via the rubber shock-absorbing block (202).

8. The novel electromagnetic driven vibrating screen according to claim 1 is characterized by: The screen frame (1) comprises an upper screen frame (101) and a lower screen frame (102), wherein the upper screen frame (101) is arranged on the top of the lower screen frame (102), and a screen (103) is arranged between the upper screen frame (101) and the lower screen frame (102).

9. The novel electromagnetic driven vibrating screen according to claim 8, characterized in that: The upper screen frame (101) and the lower screen frame (102) are both provided with a clamping ring assembly (104).

10. The novel electromagnetic driven rotary vibrating screen according to claim 9, characterized in that: The top of the upper screen frame (101) is provided with a material inlet, and the sides of the upper screen frame (101) and the lower screen frame (102) are both provided with a material outlet.

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