Anti-blocking multi-stage vibrating screen

Abstract

The utility model discloses an anti-blocking multistage vibrating screen which comprises a base, a base plate is supported at the top end of the base through an elastic connecting assembly, the top end of the base plate is connected with a plurality of screen frames through connecting assemblies, the screen frames are mutually connected through the connecting assemblies, and the inner walls of the screen frames are connected with screen cloth. A connecting base is arranged in the center of the screen, a transmission shaft is rotatably connected to the inner wall of the connecting base, a spline is connected to the top end of the transmission shaft and is in limiting fit with the connecting cylinder, a cleaning brush is connected to the outer wall of the transmission shaft, and the bottom end of the cleaning brush is in contact fit with the screen. The top end of the screen frame located at the top end is connected with a top cover through a connecting assembly, and a feeding hopper is arranged on one side of the top cover. According to the screening device, the transmission shaft, the motor and the cleaning brush are arranged, in the screening process, the cleaning brush is driven by the transmission shaft to rotate, the screen is cleaned, and the screen is prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vibrating screen technical field especially relates to a prevent blocking multistage vibrating screen. BACKGROUND

[0002] The vibrating screen is a screening equipment widely used in various industries, which realizes the separation and screening of materials based on the vibration principle. In lotus seed processing and production, multi-stage vibrating screens are often used to screen lotus seeds that have been cored or edged.

[0003] Through the search, the patent with the Chinese patent publication number CN213316140U discloses a multi-stage vibrating screen, which has a rack, a plurality of circular screen frames are suspended on the rack from top to bottom through a plurality of extension springs, and a screen is fixedly installed on the screen frame. A motor is fixedly installed at the top end or tail end of the rack, the output shaft of the motor is power-connected with a crankshaft through a speed reducer, a plurality of equidistant connecting rods are movably connected with the crankshaft, and the crankshaft is movably connected with the corresponding screen frame through the connecting rods. The motor is connected with an alternating current power supply through a switch. The screens have different mesh counts, and the lower the height, the more the mesh count, so as to layer-by-layer screen. The rack is a frame structure, and has a plurality of parallel suspension frames on the rack, and the corresponding screen frame is suspended through the extension spring. Further, the suspension frame is circular or square, the extension spring is equidistantly connected with the suspension frame, and the other end is also equidistantly connected with the screen frame, so as to ensure that the screen is uniformly stressed during screening. Further, a counterweight is fixedly connected with the bottom of the rack.

[0004] The patent can layer-by-layer screen the materials through the setting of the plurality of screens, and the screening effect is better, but the screen mesh may be blocked by the materials during the screening process, affecting the screening effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a multi-stage vibrating screen capable of preventing blockage.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A multi-stage vibrating screen capable of preventing blockage, comprising a base, an elastic connection assembly is arranged at the top end of the base to support a bottom disc, a plurality of screen frames are connected with each other through a connection assembly and connected with the bottom disc through the connection assembly, a screen mesh is connected with the inner wall of the screen frame, a connecting seat is arranged at the center of the screen mesh, a transmission shaft is rotatably connected with the inner wall of the connecting seat, a spline is connected with the top end of the transmission shaft, the spline is limitingly matched with a connecting cylinder, a cleaning brush is connected with the outer wall of the transmission shaft, and the bottom end of the cleaning brush is in contact with the screen mesh.

[0008] As a further scheme of the utility model, a vibrating device is installed on the inner wall of the base, and the output end of the vibrating device is connected with the bottom disc.

[0009] As a further scheme of the utility model: the top of the screen frame is connected with a top cover through a connecting assembly, and a feeding hopper is arranged on one side of the top cover.

[0010] As a further scheme of the utility model: the bottom disc and the screen frame are both provided with a discharging pipe.

[0011] As a further scheme of the utility model: the connecting assembly comprises a clamping block and a connecting ring, the clamping block is fixed to the side wall of the bottom disc, the screen frame and the top cover, the connecting ring is in limiting cooperation with two clamping blocks in contact with each other, and the two ends of the connecting ring are connected through bolts.

[0012] As a further scheme of the utility model: a motor is fixed to the top end of the top cover, and a connecting barrel is connected to the output shaft of the motor and the bottom end of the transmission shaft.

[0013] As a further scheme of the utility model: the mesh size of the screen mesh in the combination of the plurality of screen frames gradually decreases from top to bottom.

[0014] As a further scheme of the utility model: an air extraction device is installed at the top end of the top cover, the suction end of the air extraction device is in communication with the inside of the top cover, and the output end of the air extraction device is in communication with an external water tank through an air outlet pipe.

[0015] Compared with the prior art, the utility model provides a multi-stage vibration screen capable of preventing blockage and has the following beneficial effects:

[0016] The utility model discloses a transmission shaft, a motor and a cleaning brush are arranged, in the screening process, the transmission shaft drives the cleaning brush to rotate, and the screen mesh is cleaned, so that the screen mesh is prevented from being blocked. The utility model discloses that the spline and the connecting barrel are arranged, so that one motor can drive multiple transmission shafts to rotate, the setting of a power source is reduced, and multiple screen frames can be combined according to the screening frequency. The utility model discloses that the air extraction device and the air outlet pipe are arranged, in the screening process, the air extraction device inputs dust or ash into an external water tank through the air outlet pipe for dust removal, and the dust is prevented from flying in the environment.

[0017] The parts not involved in the device are the same as or can adopt the prior art, and the utility model has the advantages of simple structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure schematic view of the multi-stage vibration screen capable of preventing blockage.

[0019] Figure 2 It is an internal structure schematic view of the multi-stage vibration screen capable of preventing blockage.

[0020] Figure 3 A cross-sectional view of the anti-blocking multi-stage vibration screen is provided in the utility model;

[0021] Figure 4 A transmission structure schematic diagram of the anti-blocking multi-stage vibration screen motor and cleaning brush is provided in the utility model;

[0022] Figure 5 A connection structure schematic diagram between two screen frames of the anti-blocking multi-stage vibration screen is provided in the utility model;

[0023] Figure 6 A connection structure schematic diagram of the connection cylinder and spline of the anti-blocking multi-stage vibration screen is provided in the utility model.

[0024] In the figure: 1, base; 2, bottom disc; 3, screen frame; 4, discharge pipe; 5, top cover; 6, feeding hopper; 7, clamping block; 8, connecting ring; 9, screen mesh; 10, vibration device; 11, elastic connecting assembly; 12, connecting seat; 13, transmission shaft; 14, spline; 15, connection cylinder; 16, motor; 17, cleaning brush; 18, air extraction device; 19, air outlet pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] Embodiment 1

[0028] An anti-blocking multi-stage vibration screen, such as Figures 1 to 6As shown, including the base 1, the base 1 top end is supported by the elastic connecting assembly 11 with the chassis 2, the inner wall of the base 1 is provided with vibration device 10, the output end of vibration device 10 is connected with the chassis 2, the top end of the chassis 2 is connected with a plurality of screen frame 3 through the connecting assembly, the screen frame 3 at the top end is connected with the top cover 5 through the connecting assembly, the top cover 5 is provided with the feeding hopper 6 on one side, the chassis 2 and the screen frame 3 are provided with the discharge pipe 4 on one side, the inner wall of the screen frame 3 is connected with the screen 9, the screen 9 in the combination of a plurality of screen frame 3 is gradually reduced from top to bottom, the connecting assembly includes the clamping block 7 and the connecting ring 8, the clamping block 7 is fixed on the side wall of the chassis 2, the screen frame 3 and the top cover 5, the connecting ring 8 is limited with two clamping blocks 7 in contact, and the both ends of the connecting ring 8 are connected by bolts, the top end of the top cover 5 is fixed with the motor 16, the center of the screen 9 is provided with the connecting seat 12, the inner wall of the connecting seat 12 is rotatably connected with the transmission shaft 13, the top end of the transmission shaft 13 is connected with the spline 14, the spline 14 is limited with the connecting cylinder 15, the output shaft of the motor 16 and the bottom end of the transmission shaft 13 are both connected with the connecting cylinder 15, the outer wall of the transmission shaft 13 is connected with the cleaning brush 17, and the bottom end of the cleaning brush 17 is in contact with the screen 9.

[0029] When assembling, according to the number of screening times required, the corresponding number of screen frames 3 is taken out, the positions of the clamping blocks 7 on the two screen frames 3 are aligned, the two clamping blocks 7 are clamped by the connecting ring 8, and then the both ends of the connecting ring 8 are connected by bolts. In the process of connecting the plurality of clamping blocks 7 with each other, the connecting cylinder 15 in the upper screen frame 3 is connected with the spline 14 in the lower screen frame 3, then the combination of a plurality of screen frames 3 is connected with the chassis 2 through the connecting assembly, the top cover 5 is installed on the top end of the combination of screen frames 3 through the connecting assembly, the connecting cylinder 15 connected with the motor 16 is connected with the spline 14, then the vibration device 10 is started, the combination of the chassis 2, the screen frame 3 and the top cover 5 is vibrated, then the lotus seeds are put into the uppermost screen frame 3 through the feeding hopper 6, the lotus seeds screened in the screen frame 3 fall into the next level screen frame 3, and the lotus seeds blocked by the screen 9 flow out from the side discharge pipe 4; at the same time, the motor 16 drives the spline 14 to rotate, the cleaning brush 17 is driven to rotate through the transmission shaft 13, and the screen 9 is cleaned to avoid the screen 9 from being blocked.

[0030] By setting the transmission shaft 13, the motor 16 and the cleaning brush 17, the cleaning brush 17 is driven to rotate through the transmission shaft 13 in the screening process, the screen 9 is cleaned to avoid the screen 9 from being blocked.

[0031] By setting the spline 14 and the connecting cylinder 15, one motor 16 can drive a plurality of transmission shafts 13 to rotate, the setting of power source is reduced, and a plurality of screen frames 3 can be combined according to the number of screening times.

[0032] Embodiment 2

[0033] A kind of anti-blocking multistage vibrating screen, this embodiment is based on the improvement of embodiment 1, as shown in Figure 1 、 Figure 3 The top cover 5 top end is equipped with suction device 18, the suction end of the suction device 18 is communicated with the inside of top cover 5, and the output end of the suction device 18 is communicated with the outside water tank through air outlet pipe 19.

[0034] During screening, dust on the surface of lotus seeds is shaken off by vibration, and the suction device 18 inputs dust into the external water tank through the air outlet pipe 19 for dust removal, avoiding dust flying in the environment.

[0035] By setting the suction device 18 and the air outlet pipe 19, the suction device 18 inputs dust into the external water tank through the air outlet pipe 19 for dust removal during screening, avoiding dust flying in the environment.

[0036] Working principle: during assembly, according to the number of times of screening required, the corresponding number of screen frames 3 is taken out, the positions of the clamping blocks 7 on the side edges of the two screen frames 3 are aligned, the two clamping blocks 7 are clamped through the connecting ring 8, then the two ends of the connecting ring 8 are connected through bolts, during the mutual connection of the plurality of clamping blocks 7, the connecting barrel 15 in the upper screen frame 3 is connected with the spline 14 in the lower screen frame 3, then the combination of the plurality of screen frames 3 is connected with the bottom disc 2 through the connecting assembly, the top cover 5 is installed at the top end of the combination of the screen frames 3 through the connecting assembly, the connecting barrel 15 connected with the motor 16 is connected with the spline 14, then the vibration device 10 is started to make the combination of the bottom disc 2, the screen frames 3 and the top cover 5 vibrate, then the lotus seeds are put into the uppermost screen frame 3 through the feeding hopper 6, the lotus seeds screened in the screen frame 3 fall into the next level screen frame 3, and the lotus seeds blocked by the screen mesh 9 flow out from the side discharge pipe 4; at the same time, the spline 14 is driven to rotate by the motor 16, the cleaning brush 17 is driven to rotate through the transmission shaft 13 to clean the screen mesh 9, avoiding the blockage of the screen mesh 9; at the same time, the dust on the surface of the lotus seeds shaken off by vibration is input into the external water tank through the air outlet pipe 19 by the suction device 18 for dust removal, avoiding dust flying in the environment.

[0037] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the technical field according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application makes equivalent replacement or change, which should be covered in the protection scope of the present application.

Claims

1. A multi-stage vibrating screen for preventing clogging, comprising a base (1), characterized in that, The base (1) is supported by a chassis (2) at the top via an elastic connecting component (11). The top of the chassis (2) is connected to a plurality of screen frames (3) that are interconnected by the connecting components. The inner wall of the screen frame (3) is connected to a screen (9). A connecting seat (12) is provided at the center of the screen (9). A drive shaft (13) is rotatably connected to the inner wall of the connecting seat (12). A spline (14) is connected to the top of the drive shaft (13). The spline (14) is limited to the connecting cylinder (15). A cleaning brush (17) is connected to the outer wall of the drive shaft (13). The bottom end of the cleaning brush (17) is in contact with the screen (9). The top of the screen frame (3) at the top is connected to a top cover (5) via a connecting component. A feed hopper (6) is provided on one side of the top cover (5). A motor (16) is fixed to the top of the top cover (5). The output shaft of the motor (16) and the bottom end of the drive shaft (13) are both connected to the connecting cylinder (15).

2. The anti-clogging multi-stage vibrating screen according to claim 1, characterized in that, A vibration device (10) is installed on the inner wall of the base (1), and the output end of the vibration device (10) is connected to the chassis (2).

3. The anti-clogging multi-stage vibrating screen according to claim 1, characterized in that, Both the chassis (2) and the screen frame (3) are equipped with discharge pipes (4) on one side.

4. The anti-clogging multi-stage vibrating screen according to claim 1, characterized in that, The connecting assembly includes a locking block (7) and a connecting ring (8). The locking block (7) is fixed to the side wall of the chassis (2), the screen frame (3) and the top cover (5). The connecting ring (8) is in a limiting fit with two inter-contact locking blocks (7), and the two ends of the connecting ring (8) are connected by bolts.

5. A multi-stage vibrating screen for preventing clogging according to claim 1, characterized in that, The mesh size of the screen (9) in the assembly of multiple screen frames (3) gradually decreases from top to bottom.

6. The anti-clogging multi-stage vibrating screen according to claim 1, characterized in that, The top of the top cover (5) is equipped with an air extraction device (18). The air intake end of the air extraction device (18) is connected to the inside of the top cover (5), and the output end of the air extraction device (18) is connected to the external water tank through the air outlet pipe (19).

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