Multi-stage particle screening device

Abstract

The utility model provides a multi-stage particle screening device, which belongs to the technical field of multi-stage screening and comprises a base, the top of the base is fixedly connected with a supporting disc, the top of the supporting disc is fixedly connected with a plurality of pressure springs, the tops of the pressure springs are fixedly connected with a lower screen frame, and a middle screen frame and an upper screen frame are arranged above the lower screen frame. Second discharging openings are formed in the side walls of the lower screen frame, the middle screen frame and the upper screen frame correspondingly, a discharging nozzle is fixedly connected to one side of each second discharging opening, a plurality of springs are fixedly connected to the top of the base, a supporting plate is fixedly connected to the tops of the springs, a plurality of vertical frames are fixedly connected to the top of the supporting plate, and a storage bin is fixedly connected to the tops of the vertical frames. A feeding port is formed in the top of the storage bin, a discharging port is formed in one side of the storage bin, a connecting mechanism is arranged below the storage bin, and a vibrating mechanism is arranged at the bottom of the lower screen frame. According to the screening device, materials fall onto the filter screen of the upper screening frame from the first discharging opening due to vibration, and the automatic feeding process of the screening device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage screening, in particular to a particle multi-stage screening device. Background Art

[0002] The use of screening machines stems from the urgent need for material particle size control in industrial production. In the early production process, people found that directly putting unclassified raw materials into processing not only affects the quality of the final product, but may also lead to increased equipment wear, increased energy consumption and decreased production efficiency. Therefore, in order to improve the refinement of material processing and ensure the smooth progress of subsequent processes, screening technology came into being, and various mechanical screening equipment were gradually designed and manufactured. Its core function is to separate or grade loose materials by particle size through movement such as vibration of the screen surface. This process is crucial to improving product quality, optimizing production processes, and achieving effective utilization of resources.

[0003] Although modern screening machines have played a huge role in improving production efficiency and material processing accuracy, the actual use of screening machines currently still relies on manual feeding. The discontinuity and instability of manual feeding will cause fluctuations in material flow during the screening process. It is difficult for operators to maintain the ideal feeding speed and uniformity. Manual operation also increases labor costs, which in turn affects the screening quality and efficiency. How to invent a multi-stage particle screening device to improve these problems has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a multi-stage particle screening device, which aims to improve the problem of low efficiency caused by manual feeding.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a multi-stage screening device for particles, comprising a base, the top of the base is fixedly connected to a support plate, the top of the support plate is fixedly connected to a plurality of compression springs, the tops of the plurality of compression springs are fixedly connected to a lower screen frame, a middle screen frame and an upper screen frame are arranged above the lower screen frame, the side walls of the lower screen frame, the middle screen frame and the upper screen frame are all provided with a second discharge port, one side of the second discharge port is fixedly connected to a discharge nozzle, and the discharge nozzle is communicated with the second discharge port. The top of the base is fixedly connected to a plurality of springs, the tops of the plurality of springs are fixedly connected to support plates, the tops of the support plates are fixedly connected to a plurality of vertical frames, the tops of the plurality of vertical frames are fixedly connected to a storage bin, the top of the storage bin is provided with a feed port, a discharge port is provided on one side of the storage bin, a connecting mechanism is provided below the storage bin, and a vibration mechanism is provided at the bottom of the lower screen frame.

[0007] Preferably, the inlet is arranged in communication with the first outlet, and the bottom surface of the storage bin on the same side as the inlet is higher than the bottom surface of the side where the first outlet is located, and is arranged in an inclined manner.

[0008] Preferably, the bottom of the upper sieve frame and the middle sieve frame is provided with a filter screen, the mesh size of the filter screen of the upper sieve frame is larger than that of the middle sieve frame, the outer side wall of the lower sieve frame, the middle sieve frame and the upper sieve frame is fixedly connected with a plurality of upper clamps and lower clamps, the upper clamps and the lower clamps are arranged in a fitting manner, and the lower sieve frame and the middle sieve frame, the middle sieve frame and the upper sieve frame are slidably connected through the upper clamps and the lower clamps.

[0009] Preferably, the vibration mechanism comprises a plurality of cylindrical frames fixedly connected to the bottom of the lower sieve frame, the inner side of the cylindrical frames is fixedly connected with a circular support, the inner side wall of the circular support is fixedly connected with a motor, the end of the output shaft of the motor is fixedly connected with an eccentric wheel, and the top of the motor is fixedly connected with a counterweight.

[0010] Preferably, the side wall of the circular support is provided with a plurality of heat dissipation openings, and the counterweight is arranged eccentrically relative to the shaft center of the motor.

[0011] Preferably, the connecting mechanism comprises a cylindrical pin rotatably connected to the outer side wall of the upper sieve frame, the outer side wall of the cylindrical pin is fixedly connected with a push rod, the top of the push rod is fixedly connected with a push spring, and the end of the push spring is fixedly connected with a clamping joint.

[0012] Preferably, the two groups of opposite stands are fixedly connected with a joint frame, and the top of the joint frame is provided with a slot with the same outer contour as the clamping joint.

[0013] The beneficial effects of the present application are as follows: the output shaft of the motor rotates to drive the eccentric wheel to rotate, and the counterweight generates stronger vibration effect, the vibration of the motor drives the upper sieve frame to vibrate, the upper sieve frame drives the stand and the storage bin to vibrate through the connecting mechanism, the vibration of the storage bin acts on the materials inside the storage bin, the accumulated materials move along the inclined surface at the bottom of the storage bin from the inlet position to the first outlet, and then fall into the filter screen of the upper sieve frame from the first outlet, thereby realizing the automatic feeding process of the screening device and improving the working efficiency of the screening device. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1It is a kind of granule multistage screening device three-dimensional structure schematic diagram provided by the utility model embodiment;

[0016] Figure 2 It is a kind of granule multistage screening device upper card and lower card inlay schematic diagram provided by the utility model embodiment;

[0017] Figure 3 It is a kind of granule multistage screening device vibration mechanism schematic diagram provided by the utility model embodiment;

[0018] Figure 4 It is a kind of granule multistage screening device counterweight position schematic diagram provided by the utility model embodiment;

[0019] Figure 5 It is a kind of granule multistage screening device connecting mechanism schematic diagram provided by the utility model embodiment.

[0020] In the drawing: 1, base; 2, support disc; 3, compression spring; 4, lower sieve frame; 5, middle sieve frame; 6, upper sieve frame; 7, second discharge port; 8, discharge nozzle; 9, spring; 10, support plate; 11, stand; 12, storage bin; 13, inlet; 14, first discharge port; 15, upper card; 16, lower card; 17, cylindrical frame; 18, circular support; 19, motor; 20, eccentric wheel; 21, counterweight; 22, joint frame; 23, cylindrical pin; 24, push rod; 25, push spring; 26, clamping joint; 27, notch. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the utility model embodiment, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0022] Embodiment, refer to Figure 1-Figure 5, a particle multi-stage screening device includes a base 1, the top of the base 1 is fixedly connected to a support plate 2, the top of the support plate 2 is fixedly connected to a plurality of compression springs 3, the tops of the plurality of compression springs 3 are fixedly connected to a lower screen frame 4, a middle screen frame 5 and an upper screen frame 6 are arranged above the lower screen frame 4, the side walls of the lower screen frame 4, the middle screen frame 5 and the upper screen frame 6 are all provided with a second discharge port 7, one side of the second discharge port 7 is fixedly connected to a discharge nozzle 8, the discharge nozzle 8 is connected to the second discharge port 7, the top of the base 1 is fixedly connected to a plurality of springs 9, the tops of the plurality of springs 9 are fixedly connected to a support plate 10, the top of the support plate 10 is fixedly connected to a plurality of vertical frames 11, the tops of the plurality of vertical frames 11 are fixedly connected to a storage bin 12, the top of the storage bin 12 is provided with a feed port 13, and one side of the storage bin 12 is provided with The discharge port and the storage bin 12 are provided with a connecting mechanism below, and a vibration mechanism is provided at the bottom of the lower screen frame 4. The feed port 13 is connected to the first discharge port 14. The bottom surface of the storage bin 12 and the feed port 13 on the same side is higher than the bottom surface of the side where the first discharge port 14 is located, and is inclined so that the material automatically moves toward the direction of the first discharge port 14 when vibrated. The bottom of the upper screen frame 6 and the middle screen frame 5 are provided with a filter. The filter mesh of the upper screen frame 6 is larger than the filter mesh of the middle screen frame 5. The outer side walls of the lower screen frame 4, the middle screen frame 5, and the upper screen frame 6 are fixedly connected with a plurality of upper cards 15 and lower cards 16, which are embedded in the upper card 15 and the lower card 16. The lower screen frame 4 and the middle screen frame 5, the middle screen frame 5 and the upper screen frame 6 are all slidably connected by the upper card 15 and the lower card 16, which is convenient for disassembly and assembly of each screen frame.

[0023] Reference Figure 3 The vibration mechanism includes a plurality of cylindrical frames 17 fixedly connected to the bottom of the lower screen frame 4, a circular bracket 18 is fixedly connected to the inner side of the plurality of cylindrical frames 17, a motor 19 is fixedly connected to the inner wall of the circular bracket 18, an eccentric wheel 20 is fixedly connected to the end of the output shaft of the motor 19, a counterweight 21 is fixedly connected to the top of the motor 19, a plurality of heat dissipation ports are provided on the side wall of the circular bracket 18 to improve the heat dissipation effect of the motor 19, and the counterweight 21 is eccentrically arranged relative to the axis of the motor 19, so that the motor 19 generates an up and down force when vibrating.

[0024] Reference Figure 5The connecting mechanism includes a cylindrical pin 23 rotatably connected to the outer wall of the upper screen frame 6, the outer wall of the cylindrical pin 23 is fixedly connected with a push rod 24, the top of the push rod 24 is fixedly connected with a push spring 25, and the end of the push spring 25 is fixedly connected with a card joint 26. A joint frame 22 is fixedly connected between the two sets of opposing vertical frames 11, and a notch 27 with the same outer contour as the card joint 26 is provided on the top of the joint frame 22. The card joint 26 is embedded in the notch 27 so that the storage bin 12 shares the machine vibration effect. The card joint 26 is removed from the notch 27 to facilitate the disassembly and assembly of each screen frame. The output shaft of the motor 19 is rotated The eccentric wheel 20 is driven to rotate, and the counterweight 21 is cooperated to produce a stronger vibration effect. The vibration of the motor 19 drives the upper screen frame 6 to vibrate. The upper screen frame 6 drives the vertical frame 11 and the storage bin 12 to vibrate through the connecting mechanism. The vibration of the storage bin 12 acts on the material inside it, so that the accumulated material moves along the inclined surface at the bottom of the storage bin 12 from the feed port 13 to the first discharge port 14, and falls into the filter screen of the upper screen frame 6 from the first discharge port 14, realizing the automatic feeding process of the screening device, continuously maintaining the ideal feeding speed and uniformity, reducing labor costs, and improving the working efficiency of the screening device.

[0025] The working principle of this particle multi-stage screening device is as follows: the material to be screened is placed into the storage bin 12 from the feed port 13, the motor 19 is started, and the output shaft of the motor 19 rotates to drive the eccentric wheel 20 to rotate. The rotation of the eccentric wheel 20 causes the motor 19 to produce a horizontal reciprocating vibration effect. The vibration of the motor 19 drives the counterweight block 21 to vibrate at the same time. Since the counterweight block 21 is eccentrically arranged relative to the axis of the motor 19, the horizontal reciprocating vibration effect of the motor 19 is decomposed into vibration effects in two directions, vertical and horizontal. The vibration of the motor 19 drives the lower screen frame 4 to vibrate through the cylindrical frame 17 and the circular bracket 18. The lower screen frame 4 drives the middle screen frame 5 and the upper screen frame 6 to vibrate. The upper screen frame 6 is connected by a connecting mechanism. The vibration force is transmitted to the joint frame 22 and the vertical frame 11. The vibration of the vertical frame 11 drives the storage bin 12 to vibrate. The vibration of the storage bin 12 acts on the material inside it, so that the accumulated material moves along the inclined surface at the bottom of the storage bin 12 from the feed port 13 to the first discharge port 14, and falls into the filter screen of the upper screen frame 6 from the first discharge port 14. The material that can pass through the filter mesh holes of the upper screen frame 6 falls into the filter screen of the middle screen frame 5 below. The material that does not pass through the filter screen of the upper screen frame 6 enters the second discharge port 7 in a circular path of jumping motion due to the vibration, and falls from the discharge nozzle 8 to complete the first screening. The material that falls on the filter screen of the middle screen frame 5 is screened using the same principle, and finally the multi-stage screening of the material is completed.

[0026] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A particle multi-stage screening device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support plate (2), the top of the support plate (2) is fixedly connected to a plurality of compression springs (3), the tops of the plurality of compression springs (3) are fixedly connected to a lower screen frame (4), a middle screen frame (5) and an upper screen frame (6) are arranged above the lower screen frame (4), and the side walls of the lower screen frame (4), the middle screen frame (5) and the upper screen frame (6) are all provided with a second discharge port (7), and a discharge nozzle (8) is fixedly connected to one side of the second discharge port (7), and the discharge nozzle (8) is connected to the second discharge port (7). The top of the base (1) is fixedly connected to a plurality of springs (9), the tops of the plurality of springs (9) are fixedly connected to a support plate (10), the top of the support plate (10) is fixedly connected to a plurality of vertical frames (11), the tops of the plurality of vertical frames (11) are fixedly connected to a storage bin (12), a material inlet (13) is provided at the top of the storage bin (12), a material outlet is provided on one side of the storage bin (12), a connecting mechanism is provided below the storage bin (12), and a vibration mechanism is provided at the bottom of the lower screen frame (4).

2. A particle multi-stage screening device according to claim 1, characterized in that: The feed port (13) is connected to the first discharge port (14), and the bottom surface of the storage bin (12) on the same side as the feed port (13) is higher than the bottom surface on the side where the first discharge port (14) is located, and is arranged in an inclined manner.

3. The multi-stage particle screening device according to claim 1, characterized in that: The bottoms of the upper sieve frame (6) and the middle sieve frame (5) are both provided with filter screens, the mesh size of the filter screen of the upper sieve frame (6) is larger than the mesh size of the filter screen of the middle sieve frame (5), the outer side walls of the lower sieve frame (4), the middle sieve frame (5), and the upper sieve frame (6) are all fixedly connected with a plurality of upper clamps (15) and lower clamps (16), the upper clamps (15) and the lower clamps (16) are arranged in a chimeric arrangement, and the lower sieve frame (4) and the middle sieve frame (5), and the middle sieve frame (5) and the upper sieve frame (6) are all slidably connected via the upper clamps (15) and the lower clamps (16).

4. The multi-stage particle screening device according to claim 1, characterized in that: The vibration mechanism comprises a plurality of cylindrical frames (17) fixedly connected to the bottom of the lower screen frame (4), a circular bracket (18) fixedly connected to the inner side of the plurality of cylindrical frames (17), a motor (19) fixedly connected to the inner side wall of the circular bracket (18), an eccentric wheel (20) fixedly connected to the end of the output shaft of the motor (19), and a counterweight (21) fixedly connected to the top of the motor (19).

5. The multi-stage particle screening device according to claim 4, characterized in that: The side wall of the circular bracket (18) is provided with a plurality of heat dissipation openings, and the counterweight (21) is eccentrically arranged relative to the axis of the motor (19).

6. The multi-stage particle screening device according to claim 1, characterized in that: The connecting mechanism comprises a cylindrical pin (23) rotatably connected to the outer wall of the upper screen frame (6), a push rod (24) is fixedly connected to the outer wall of the cylindrical pin (23), a push spring (25) is fixedly connected to the top of the push rod (24), and a clamping joint (26) is fixedly connected to the end of the push spring (25).

7. The multi-stage particle screening device according to claim 6, characterized in that: A joint frame (22) is fixedly connected between the two groups of opposing vertical frames (11), and a notch (27) having the same outer contour as the card joint (26) is provided on the top of the joint frame (22).

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