Vibration isolation device of vibrating mesh screen

Abstract

The vibration isolation device comprises an obliquely-arranged screen box, damping springs are arranged at the four corners of the lower surface of the screen box, supporting legs are fixed to the lower ends of the damping springs, a feeding port is formed in the upper end of the screen box, a discharging port is formed in the lower end of the screen box, and vibration shafts are evenly arranged on the screen box. The two ends of the vibration shaft are connected with the screen box through an assembling structure, a vibration assembly is installed at one end of the vibration shaft, the assembling structure comprises a fixing base fixedly installed on one side of the screen box through a first bolt, the vibration shaft penetrates through the center of the fixing base, and the outer side of the vibration shaft is sleeved with a rubber spring inner sleeve. The rubber spring rubber part is arranged on the outer side of the rubber spring inner sleeve, the vibration isolation device is reasonable in design, and vibration and noise can be effectively prevented from being transmitted to the screen box; the vibration isolation device is simple and efficient in structure; the vibration isolation spring is simple and reasonable in structure, so that the vibration isolation spring is simple to process and convenient to mount and dismount.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vibrating screen technology field, concretely is a kind of vibration isolation device of vibrating screen. BACKGROUND

[0002] Vibrating screen is mainly composed of screen frame, vibrating shaft and blanking bin, and its working principle is that vibrating motor drives vibrating shaft to rotate and lift screen mesh, and excite material vibration.Vibrating screen has large production capacity, small vibration load, low noise, good dustproof condition and convenient maintenance.Vibrating screen is suitable for classifying loose compound fertilizer and other loose fine materials, and is widely used in screening operation of domestic large-scale ammonium phosphate plant and compound fertilizer plant.

[0003] The existing application No.202311003597.0 provides a vibrating screen and a combined device thereof, which includes a screen box, a vibrating shaft assembly and a screen mesh, the vibrating shaft assembly includes a vibrating shaft body and a vibration source, and a plurality of vibrating shaft assemblies are distributed on the screen box along the length direction of the screen box through elastic suspension devices;the vibration isolation device is arranged between the vibrating shaft and the screen box, so that the vibration of the vibrating shaft is not transmitted to the screen box;however, since the vibrating screen operates at high speed, and the screened materials such as ammonium phosphate fertilizer and compound fertilizer are corrosive, the general vibration isolation device using torsion-resistant rubber springs is easily damaged due to compression or corrosion, and the vibrating screen cannot continuously operate under normal working conditions. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems of overcoming the defects of the prior art, and provides a vibration isolation device for a vibrating screen, which is reasonable in design and can effectively prevent vibration and noise from being transmitted to the screen box;the vibration isolation device is simple and efficient;the simple and reasonable structure of the vibration isolation spring makes it easy to process, and the vibration isolation spring is convenient to install and disassemble, so that the problems in the background art can be effectively solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vibration isolation device for a vibrating screen, the screen box is uniformly provided with vibrating shafts, the two ends of the vibrating shafts are connected with the screen box through assembly structure, one end of the vibrating shaft is provided with a vibration assembly, the assembly structure includes a fixed seat fixedly installed on one side of the screen box through a bolt, and the vibrating shaft passes through the center of the fixed seat, a rubber spring inner sleeve is sleeved on the outer side of the vibrating shaft, a rubber spring rubber part is arranged on the outer side of the rubber spring inner sleeve, a rubber spring outer sleeve is arranged between the outer side of the rubber spring rubber part and the fixed seat, the rubber spring inner sleeve is fixed on the vibrating shaft through a round nut, an outer pressing plate and an inner pressing plate are sleeved on the vibrating shaft, and the outer pressing plate and the inner pressing plate are respectively located on the two sides of the rubber spring rubber part.

[0006] Further, the rubber spring inner sleeve and the vibrating shaft are locked through a key.

[0007] Further, the vibration assembly comprises a motor base fixed at one end of the vibration shaft, and a vibration motor is connected to one side of the motor base through a bolt two.

[0008] Further, the fixed base comprises two semicircular mounting plates fixed through two bolts three.

[0009] Further, the lower surface of the screen box is provided with shock-absorbing springs at four corners, the lower end of each shock-absorbing spring is fixed with a supporting leg, the upper end of the screen box is provided with a feeding port, and the lower end of the screen box is provided with a discharging port.

[0010] Compared with the prior art, the beneficial effects of the utility model are that: the vibration isolation device of the vibrating screen, the vibration isolation device is reasonable in design, can effectively avoid vibration and noise transmission to the screen box; the vibration isolation device is simple and efficient in structure, the rubber spring outer sleeve and the rubber spring inner sleeve effectively avoid the friction of the rubber part of the rubber spring with the fixed seat of the high-speed rotating vibration shaft, reduce the pressure of the rubber part of the rubber spring, the outer pressure plate and the inner pressure plate isolate the corrosive substances that the rubber part of the rubber spring may contact, prolong the service life of the vibration isolation device; the simple and reasonable structure of the vibration isolation spring makes it simple to process, and convenient to install and disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of the utility model;

[0012] Figure 2 It is an enlarged structural schematic view of A of the utility model;

[0013] Figure 3 It is a partial enlarged structural schematic view of the utility model;

[0014] Figure 4 It is a sectional structural schematic view of L of the utility model.

[0015] In the drawing: 1 feeding port, 2 screen box, 3 discharging port, 4 assembly structure, 5 shock-absorbing spring, 6 supporting leg, 7 outer pressure plate, 8 round nut, 9 fixed seat, 10 motor base, 11 vibration motor, 12 bolt two, 13 bolt one, 14 inner pressure plate, 15 rubber spring outer sleeve, 16 rubber part of rubber spring, 17 key, 18 rubber spring inner sleeve, 19 bolt three, 20 vibration shaft. DETAILED DESCRIPTION

[0016] 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Referring to Figures 1-4 The utility model provides a technical scheme: a vibration isolation device of a vibrating screen, comprising a screen box 2 which is arranged obliquely, the lower surface of the screen box 2 is provided with damping springs 5 at four corners, the lower end of the damping spring 5 is fixed with a supporting leg 6, the upper end of the screen box 2 is provided with a feeding port 1, and the lower end of the screen box 2 is provided with a discharging port 3, the screen box 2 is uniformly provided with vibration shafts 20, the two ends of the vibration shaft 20 are connected with the screen box 2 through assembly structure 4, one end of the vibration shaft 20 is provided with a vibration assembly, the assembly structure 4 comprises a fixed seat 9 fixedly installed on one side of the screen box 2 through a bolt 13, and the vibration shaft 20 passes through the center of the fixed seat 9, the outer side of the vibration shaft 20 is sleeved with a rubber spring inner sleeve 18, the outer side of the rubber spring inner sleeve 18 is provided with a rubber spring rubber part 16, a rubber spring outer sleeve 15 is arranged between the outer side of the rubber spring rubber part 16 and the fixed seat 9, the rubber spring inner sleeve 18 is fixed on the vibration shaft 20 through a round nut 8, the rubber spring outer sleeve 15 and the rubber spring inner sleeve 18 effectively avoid the friction of the rubber spring rubber part 16 caused by the high-speed rotating vibration shaft 20 and the fixed seat 9, reduce the pressure received by the rubber spring rubber part 16, the rubber spring inner sleeve 18 and the vibration shaft 20 are locked through a key 17, the vibration shaft 20 is sleeved with an outer pressing plate 7 and an inner pressing plate 14, the outer pressing plate 7 and the inner pressing plate 14 are located at the two sides of the rubber spring rubber part 16 respectively, the left and right sides of the rubber spring rubber part 16 are attached to the outer pressing plate 7 and the inner pressing plate 14 respectively, the outer pressing plate 7 and the inner pressing plate 14 isolate the corrosive substances that the rubber spring rubber part 16 can contact, prolong the service life of the vibration isolation device, the vibration assembly comprises a motor seat 10 fixed on one end of the vibration shaft 20, a vibration motor 11 is connected on one side of the motor seat 10 through a bolt 12, the fixed seat 9 comprises two semicircular mounting plates, the two semicircular mounting plates are fixed through two bolts 19, the vibration isolation device of the vibrating screen is reasonable in design, can effectively avoid the vibration and noise transmission to the screen box 2, the vibration isolation device is simple and efficient in structure, the simple and reasonable structure of the vibration isolation spring makes the processing simple, and the installation and dismounting are convenient.

[0018] In use: the vibration isolation device is reasonable in design, can effectively avoid the vibration and noise transmission to the screen box 2, the vibration isolation device is simple and efficient in structure, the rubber spring outer sleeve 15 and the rubber spring inner sleeve 18 effectively avoid the friction of the rubber spring rubber part 16 caused by the high-speed rotating vibration shaft 20 and the fixed seat 9, reduce the pressure received by the rubber spring rubber part 16, the outer pressing plate 7 and the inner pressing plate 14 isolate the corrosive substances that the rubber spring rubber part 16 can contact, prolong the service life of the vibration isolation device, the simple and reasonable structure of the vibration isolation spring makes the processing simple.

[0019] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application.

Claims

1. A vibration isolation device for a vibrating screen, comprising an inclined screen box (2), characterized in that: Vibration shafts (20) are evenly arranged on the screen box (2). The two ends of the vibration shafts (20) are connected to the screen box (2) through the assembly structure (4). A vibration component is installed at one end of the vibration shaft (20). The assembly structure (4) includes a fixed seat (9) fixedly installed to one side of the screen box (2) by bolt (13). The vibration shaft (20) passes through the center of the fixed seat (9). A rubber spring inner sleeve (18) is sleeved on the outside of the vibration shaft (20). A rubber spring rubber part (16) is provided on the outside of the rubber spring inner sleeve (18). A rubber spring outer sleeve (15) is provided between the outside of the rubber spring rubber part (16) and the fixed seat (9). The rubber spring inner sleeve (18) is fixed on the vibration shaft (20) by a round nut (8). An outer pressure plate (7) and an inner pressure plate (14) are sleeved on the vibration shaft (20). The outer pressure plate (7) and the inner pressure plate (14) are located on both sides of the rubber spring rubber part (16).

2. The vibration isolation device for a vibrating screen according to claim 1, characterized in that: The rubber spring inner sleeve (18) and the vibration shaft (20) are locked together by a key (17).

3. The vibration isolation device for a vibrating screen according to claim 1, characterized in that: The vibration assembly includes a motor mount (10) fixed to one end of the vibration shaft (20), and a vibration motor (11) is connected to one side of the motor mount (10) by bolt two (12).

4. The vibration isolation device for a vibrating screen according to claim 1, characterized in that: The mounting base (9) includes two semi-circular mounting plates, which are fixed together by two bolts (19).

5. The vibration isolation device for a vibrating screen according to claim 1, characterized in that: The screen box (2) is provided with shock-absorbing springs (5) at the four corners of its lower surface. The lower end of the shock-absorbing springs (5) is fixed with a support leg (6). The upper end of the screen box (2) is provided with a feed inlet (1), and the lower end of the screen box (2) is provided with a discharge outlet (3).

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