Electromagnetic type multifunctional automatic screening machine

Abstract

The utility model provides an electromagnetic type multifunctional automatic screening machine which comprises a machine frame. The number of the screening pieces is at least two, and the multiple screening pieces are arranged on the rack in a stacked mode; the hopper is arranged above the screen piece, and a discharge port of the hopper faces one end of the screen piece; and the supporting plate is arranged below the screening piece, an electromagnetic coil is arranged on the supporting plate, the electromagnetic coil is used for driving the screening piece to vibrate, and the vibrating screen has the beneficial effects that the adjusting efficiency is improved, the screening accuracy is improved, and the vibrating screen is suitable for screening of various materials.

Description

Technical Field

[0001] The utility model relates to the technical field of screening machines, in particular to an electromagnetic multifunctional automatic screening machine. Background Art

[0002] At present, in daily life, agricultural products such as tea and fruit need to be screened according to product size, and then packaged separately according to the size of the agricultural products to increase their economic value; in industrial production, mixed raw materials such as ore and sand need to be screened according to particle size, and then different processing methods are used for particles of different sizes to improve production efficiency.

[0003] In the related art, the screening machines on the market use an eccentric counterweight driven by a motor, and the vibration magnitude is adjusted by changing the size of the eccentric counterweight.

[0004] With regard to the above-mentioned related technologies, changing the size of the eccentric counterweight requires the machine to be stopped for adjustment, and when changing the material type, the process of adjusting and finding the appropriate vibration size requires multiple tests, which is very time-consuming and difficult to adapt to the screening needs of various materials. There is a problem of low efficiency in vibration adjustment.

[0005] In view of this, it is indeed necessary to provide an electromagnetic multifunctional automatic screening machine to solve the above-mentioned technical solutions. Utility Model Content

[0006] The utility model aims to provide an electromagnetic multifunctional automatic screening machine to solve the problem of low efficiency of vibration adjustment machine.

[0007] In order to achieve the above purpose, the utility model electromagnetic multifunctional automatic screening machine adopts the following technical solutions:

[0008] Electromagnetic multifunctional automatic screening machine, including a frame:

[0009] At least two sieve plates are provided, and a plurality of the sieve plates are stacked on the frame;

[0010] A hopper is arranged above the screen, and a discharge port of the hopper faces one end of the screen;

[0011] A support plate is arranged below the sieve plate, and an electromagnetic coil is arranged on the support plate, and the electromagnetic coil is used to drive the sieve plate to vibrate.

[0012] As an optimization of the electromagnetic multifunctional automatic screening machine, a counterweight block is slidably arranged on the support plate, and the counterweight block slides along the length direction of the screen.

[0013] As an optimization of the electromagnetic multifunctional automatic screening machine, a fixed plate is provided on the frame, and the side wall of the hopper is slidably connected to the fixed plate.

[0014] As an optimization of the electromagnetic multifunctional automatic screening machine, an adjusting knob is provided on the discharge port of the hopper, and the adjusting knob is used to adjust the material flow rate of the discharge port of the hopper.

[0015] As an optimization of the electromagnetic multifunctional automatic screening machine, a pre-screening disc is rotatably provided on one side of the screen sheet close to the hopper, and the discharge port of the hopper faces the pre-screening disc.

[0016] As an optimization of the electromagnetic multifunctional automatic screening machine, a pressure frame is provided on the side of the screen close to the hopper, and a compression cylinder is provided on the frame, and the compression cylinder is used to drive the pressure frame to press against the screen.

[0017] As an optimization of the electromagnetic multifunctional automatic screening machine, a vibrating pressure plate is arranged on the frame, one end of the vibrating pressure plate is hinged to the frame, and the other end of the vibrating pressure plate is used to knock the pressure frame.

[0018] As an optimization of the electromagnetic multifunctional automatic screening machine, a push rod and a driving motor are arranged on the frame. The push rod is arranged on the side of the screen close to the support plate, and the push rod abuts against the end of the screen away from the hopper discharge port. The driving motor is used to drive the push rod to rise and fall.

[0019] As an optimization of the electromagnetic multifunctional automatic screening machine, an energy storage spring is arranged on a side of the support plate away from the electromagnetic coil, and one end of the energy storage spring away from the support plate is fixedly connected to the frame.

[0020] As an optimization of the electromagnetic multifunctional automatic screening machine, a control box is arranged on the frame, and the control box is electrically connected to the electromagnetic coil.

[0021] Compared with the prior art, the beneficial effect of the utility model is that when the material needs to be screened, the material falls from the hopper into the top screen, and the multi-layer screen is driven to vibrate by adopting the principle of electromagnetic coil attraction and vibration, so that the material is dispersed and fully contacts the screen layer by layer, and materials of different sizes are retained on different layers of screen for collection. When the vibration size needs to be adjusted, the vibration size can be adjusted by changing the current size of the electromagnetic coil without stopping the machine, and the adjustment effect is intuitive, and the current size can be further fine-tuned according to the effect of the vibration, thereby improving the accuracy of the machine adjustment, improving the efficiency of the machine adjustment, and being conducive to meeting the screening needs of various materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of the overall structure of the electromagnetic multifunctional automatic screening machine of the present application;

[0024] Figure 2 This is a front view of the electromagnetic multifunctional automatic screening machine of the present application.

[0025] In the figure: 1. frame; 11. vertical bracket; 12. bottom bracket; 2. screen; 21. guard plate; 22. discharge slide; 23. pre-screening plate; 24. permanent magnet; 3. hopper; 31. fixed plate; 311. U-shaped groove; 32. adjusting knob; 321. baffle; 322. adjusting rod; 4. support plate; 41. energy storage spring; 5. electromagnetic coil; 6. pressure frame; 61. compression cylinder; 62. vibration pressure plate; 621. rotating rod; 622. knocking rod; 7. push rod; 71. driving motor; 8. counterweight; 9. control box. DETAILED DESCRIPTION

[0026] In order to make the technical solution and advantages of the utility model clearer, the utility model and its beneficial effects will be further described in detail below in combination with specific implementation methods and drawings of the specification, but the implementation methods of the utility model are not limited thereto.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0029] The following is combined with Figure 1-2, further details of this application are given.

[0030] This application provides an electromagnetic multifunctional automatic screening machine, which adopts the following technical solutions:

[0031] Reference Figure 1 and Figure 2 The electromagnetic multifunctional automatic screening machine comprises a frame 1, which comprises two vertical brackets 11 and a bottom bracket 12, and the two vertical brackets 11 are symmetrically distributed on both sides of the bottom bracket 12. The vertical brackets 11 are sequentially mounted with a hopper 3 and a screen plate 2 from top to bottom, and a support plate 4 is mounted on the bottom bracket 12. A fixing plate 31 is integrally formed on the top of the vertical bracket 11, the upper part of the hopper 3 is a rectangular frame, and the lower part is a pyramid, the side wall of the upper part of the hopper 3 is connected to the fixing plate 31, and the lower part of the hopper 3 is provided with a discharge port. A guard plate 21 is also fixedly installed in the middle of the vertical support 11, and the screen 2 is installed between the guard plates 21 on both sides. The screen 2 includes at least two screens 2 with different screen hole sizes, and multiple screens 2 are stacked and installed on the frame 1 in layers according to the screen hole diameter decreasing from top to bottom, wherein the screen hole of the bottom screen 2 is smaller than the minimum value of the material diameter to prevent the material from falling into the parts at the bottom of the device, one end of each screen 2 is located at the discharge port of the hopper 3, and the other end of each screen 2 is bonded with a discharge chute 22, and each discharge chute 22 faces different directions. In this embodiment, the screen 2 includes 4 screens 2 with the screen hole diameter decreasing from top to bottom. The support plate 4 is located below the screen 2, and an electromagnetic coil 5 is installed on the support plate 4. A permanent magnet 24 is installed at the bottom of the screen 2. When an alternating current is passed through the electromagnetic coil 5, the electromagnetic coil 5 generates an alternating magnetic field, and the permanent magnet 24 is alternately attracted and repelled by the electromagnetic coil 5, thereby driving the screen 2 to vibrate. Under the vibration of the screen 2, the material is in full contact with the screen 2, and the part of the material smaller than the mesh of the screen 2 falls into the next layer of the screen 2 during the vibration, and the part of the material larger than the mesh of the screen 2 is transmitted to the discharge chute 22 for collection by the vibration of the screen 2, thereby automatically screening the material. Furthermore, when it is necessary to change the vibration magnitude, the amplitude on the screen 2 can be changed by changing the magnitude of the current passed into the electromagnetic coil 5, and the vibration frequency of the screen 2 can be changed by changing the frequency of the current passed into the electromagnetic coil 5, so that the vibration magnitude can be adjusted without stopping the machine, the downtime can be reduced, and the vibration adjustment efficiency can be increased. Through the intuitive effect of the vibration magnitude, the current magnitude can also be fine-tuned to make the adjustment effect more accurate, which is conducive to meeting the screening needs of various materials.

[0032] Further, refer to Figure 1 and Figure 2A counterweight block 8 is also installed on the support plate 4. The counterweight block 8 slides on the support plate 4 along the length direction of the screen plate 2, and the counterweight block 8 can be fixed on the support plate 4 by screws. When the position of the counterweight block 8 is moved, the position of the center of gravity of the support plate 4 moves with the counterweight block 8, thereby changing the position of the resonance point on the screen plate 2, which is conducive to improving the accuracy of the machine adjustment.

[0033] In the preferred embodiment of the present application, refer to Figure 1 and Figure 2 A U-shaped groove is provided on the fixing plate 31 at the top of the frame 1, and the hopper 3 is slidably connected to the fixing plate 31. Bolts are screwed into the U-shaped groove, and the bolts abut against the side of the hopper 3 to limit the sliding of the hopper 3 and fix the hopper 3. By changing the distance between the discharge port of the hopper 3 and the screen 2, the gravitational potential energy of the material in the hopper 3 can be changed, thereby changing the material flow rate of the material contacting the screen 2, which is conducive to improving the screening effect of the screen 2.

[0034] Further, refer to Figure 1 and Figure 2 The discharge port of the hopper 3 is equipped with an adjusting knob 32, which includes a baffle 321 and an adjusting rod 322. The baffle 321 slides along the side wall of the hopper 3, and the adjusting rod 322 is slidably installed on the side wall of the hopper 3. The end of the adjusting rod 322 close to one end of the baffle 321 is penetrated and welded to the baffle 321. By toggling the adjusting rod 322, the position of the baffle 321 relative to the discharge port can be adjusted, thereby adjusting the flow rate and flow speed of the material at the discharge port, which is beneficial to improving the screening effect of the screen 2.

[0035] Furthermore, refer to Figure 1 and Figure 2 A pre-screening disc 23 is rotatably installed above the top screen piece 2, and the discharge port of the hopper 3 faces the pre-screening disc 23. The pre-screening disc 23 is disc-shaped, and the bottom of the pre-screening disc 23 is a screen. The pre-screening disc 23 rotates under the drive of an external servo motor, and the material falling on the pre-screening disc 23 is evenly dispersed to the bottom of the pre-screening disc 23 through centrifugal action, and then slowly falls onto the top screen piece 2, so that the material falling on the screen piece 2 is more evenly dispersed, which is conducive to full contact between the material and the screen piece 2.

[0036] In the preferred embodiment of the present application, refer to Figure 1 and Figure 2A pressure frame 6 is installed on the side of the screen 2 close to the hopper 3, and a compression cylinder 61 is installed on the frame 1. The compression cylinders 61 are distributed on the guard plates 21 on both sides of the screen 2. A pressure head is fixed on the compression cylinder 61, and the pressure head is located above the pressure frame 6. When the compression cylinder 61 contracts, the pressure head approaches and presses against the top of the pressure frame 6. The pressure frame 6 makes the multiple screens 2 fit closely to each other, reduces the impact of vibration on the gaps between the multiple layers of screens 2, and reduces the material passing through the gaps between the multiple layers of screens 2 to enter the next layer of screen 2, thereby improving the screening accuracy of each layer of screen 2.

[0037] Further, refer to Figure 1 and Figure 2 A vibration platen 62 is installed on the frame 1, and the vibration platen 62 includes a rotating rod 621 and a knocking rod 622. One end of the rotating rod 621 is hinged to the guard plate 21 of the frame 1, and the other end of the rotating rod 621 is fixedly connected to the end of the knocking rod 622. The knocking rod 622 is installed between the free ends of the rotating rods 621 on both sides. The knocking rod 622 knocks the pressure frame 6 as the free ends of the rotating rods 621 rotate, causing the screen 2 to shake, thereby reducing the material stuck on the screen 2 and making the screening smoother.

[0038] In the preferred embodiment of the present application, refer to Figure 1 and Figure 2 A push rod 7 and a drive motor 71 are also installed on the frame 1. The push rod 7 is vertically installed below the screen 2. The push rod 7 is located at one end of the screen 2 away from the discharge port of the hopper 3. The drive motor 71 is installed on the bottom bracket 12 of the frame 1. The drive motor 71 can drive the push rod 7 to rise and fall when it rotates, and adjust the position of the end of the screen 2, thereby changing the inclination angle of the screen 2, increasing the climbing angle and movement time of the material on the screen 2, and then making the material on the screen 2 more fully contact with the holes of the screen 2, thereby improving the accuracy of screening.

[0039] In the preferred embodiment of the present application, refer to Figure 1 and Figure 2 , an energy storage spring 41 is installed on the side of the support plate 4 away from the electromagnetic coil 5. The energy storage spring 41 is a hard spring with a large stiffness coefficient. The end of the energy storage spring 41 away from the support plate 4 is fixedly connected to the frame 1. The energy storage spring 41 in this embodiment uses a hard spring with a wire diameter of 10mm, an outer diameter of 100mm, and a height of 80mm. When the electromagnetic coil 5 on the support plate 4 generates a vibration driving force, the energy storage spring 41 can absorb the kinetic energy transmitted by the electromagnetic coil 5 to the frame 1, reduce the vibration of the frame 1, and reduce the counterweight of the frame 1, thereby making the frame 1 lighter.

[0040] In the preferred embodiment of the present application, refer to Figure 1A control box 9 is installed on the side of the frame 1. The control box 9 is installed with matching electronic components including a start button, an operation screen, a PLC controller and a transformer. The PLC controller in the control box 9 is electrically connected to the electromagnetic coil 5. The production personnel import the controllable program into the PLC controller through the operation screen, and then change the current of the electromagnetic coil 5 through the PLC controller, thereby realizing the human-computer interaction function, which is conducive to modulating the current of the electromagnetic coil 5.

[0041] The experimental principle of the embodiment of the present application is as follows: the electromagnetic multifunctional automatic screening machine provides materials to the multi-layer screen 2 through the hopper 3, adjusts the flow rate of the materials by adjusting the relative position of the hopper 3 and the fixed plate 31, controls the flow rate of the materials by adjusting the knob 32, and then disperses the materials evenly through the screening plate, so that the materials fall into the multi-layer screen 2 and fully contact with the screen 2, thereby improving the accuracy of the screening; by passing an alternating current into the electromagnetic coil 5, the electromagnetic coil 5 attracts the magnet to vibrate, drives the screen 2 to vibrate up and down, and makes the materials pass on each layer of the screen 2, and fully contact with each layer of the screen 2, thereby improving the accuracy of the screening. When the size needs to be adjusted, the production worker adjusts the current of the electromagnetic coil 5 through the control box 9, which reduces the downtime and thus improves the adjustment efficiency; by moving the position of the counterweight block 8, the resonance point on the screen 2 is moved, and the vibration effect on the screen 2 is observed, which further improves the adjustment efficiency, and is conducive to adapting to the screening needs of various materials.

[0042] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. Electromagnetic multifunctional automatic screening machine, characterized in that: include frame; At least two sieve plates are provided, and a plurality of the sieve plates are stacked on the frame; A hopper is arranged above the screen, and a discharge port of the hopper faces one end of the screen; A support plate is arranged below the sieve plate, and an electromagnetic coil is arranged on the support plate, and the electromagnetic coil is used to drive the sieve plate to vibrate.

2. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: A counterweight block is slidably arranged on the support plate, and the counterweight block slides along the length direction of the screen plate.

3. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: A fixing plate is arranged on the frame, and the side wall of the hopper is slidably connected to the fixing plate.

4. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: An adjusting knob is provided on the discharge port of the hopper, and the adjusting knob is used to adjust the material flow rate of the discharge port of the hopper.

5. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: A pre-screening plate is rotatably arranged on one side of the screen sheet close to the hopper, and a discharge port of the hopper faces the pre-screening plate.

6. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: A pressing frame is arranged on one side of the screen plate close to the hopper, and a compression cylinder is arranged on the frame, and the compression cylinder is used to drive the pressing frame to press against the screen plate.

7. The electromagnetic multifunctional automatic screening machine according to claim 6, characterized in that: The frame is provided with a vibration pressing plate, one end of which is hinged to the frame, and the other end of which is used for knocking the pressing frame.

8. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: A push rod and a drive motor are arranged on the frame. The push rod is arranged on a side of the screen close to the support plate. The push rod abuts against an end of the screen away from the hopper discharge port. The drive motor is used to drive the push rod to rise and fall.

9. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: An energy storage spring is arranged on a side of the support plate away from the electromagnetic coil, and one end of the energy storage spring away from the support plate is fixedly connected to the frame.

10. The electromagnetic multifunctional automatic screening machine according to claim 1, characterized in that: A control box is arranged on the frame, and the control box is electrically connected to the electromagnetic coil.

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