Novel stepped vibrating screen and vibrating screening device
By designing a new step vibrating screen, multiple inclined screens and independent installation designs are adopted to facilitate maintenance and extend service life; using fixed swing arm pulleys and support springs to reduce deformation, and reducing energy consumption and pollution through secondary vibration and closed box, the existing sand and gravel screening equipment is solved to solve the cumbersome maintenance, high energy consumption and pollution problems, and the efficient and environmentally friendly screening effect is achieved.
Patent Information
- Application Number
- CN202420611662.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing sand and gravel screening equipment has problems such as cumbersome equipment maintenance, high power, high energy consumption, and short screen service life.
A new type of step vibrating screen is designed, and multiple screens are screened. The screens are inclined and connected into step-by-step shapes in a gradually increasing aperture. Each screen is independently installed on the feeding shuttle groove for easy maintenance. The screen is fixed with a fixed swing arm pulley and a support spring to reduce deformation caused by external forces; the inclined bottom of the screen is connected to the spring to generate secondary vibration to reduce material blockage, and to reduce dust generation through the closed box.
It realizes multi-particle size screening of sand and gravel, facilitates maintenance, extends the service life of the screen, reduces energy consumption and operating costs, improves screening efficiency, and reduces environmental pollution.
Smart Images
Figure CN222607100U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sand and gravel screening equipment, and specifically relates to a novel stepped vibrating screen and a vibrating screening device. Background Art
[0002] It was found in production that the existing sand and gravel screening has the following three problems: First, quarries often use double-layer or three-layer circular vibrating screens for screening operations. From the perspective of equipment maintenance and replacement of screens during use, since the distance between the screens in the vibrating screen box is small, it is more cumbersome to replace the screens in the middle or bottom; second, the circular vibrating screen has high equipment power, high operating costs, and relatively high energy consumption; third, the fixed end of the screen is deformed due to external forces, and its service life is short. Therefore, it is very necessary to develop a new type of stepped vibrating screen that can solve the above problems. Utility Model Content
[0003] The first purpose of the utility model is to provide a new type of stepped vibrating screen, which can realize the screening of sand and gravel with multiple particle sizes. Compared with traditional screening equipment, the new type of stepped vibrating screen can reduce the use of consumables, facilitate the maintenance and replacement of parts, and improve the screening effect.
[0004] The second purpose of the utility model is to provide a vibrating screening device.
[0005] The first object of the utility model is achieved in this way, including a vibrating screen body, a feeding hopper is provided at the upper end of the vibrating screen body, a feeding shuttle slot is provided below the screen of the vibrating screen body, the screen of the vibrating screen body includes a first screen, a second screen, a third screen, and a fourth screen which are sequentially connected and have gradually increasing apertures, the inclination angles A1, A2, A3, and A4 of the first screen, the second screen, the third screen, and the fourth screen gradually decrease along the inclination direction, and the angle A1 is the largest, so that the screen is in a concave arc shape, the feeding shuttle slots are four and are arranged in sequence from left to right, the first screen, the second screen, the third screen, and the fourth screen are inclined at an angle A1, A2, A3, and A4. The screen, the second screen, the third screen and the fourth screen correspond to a feed shuttle slot respectively, and the higher ends of the first screen, the second screen, the third screen and the fourth screen are connected to the left top of the corresponding feed shuttle slot through a fixed swing arm pulley, and the bottoms of the lower ends of the first screen, the second screen, the third screen and the fourth screen are fixed on the supporting angle steel through supporting springs, and one side of the supporting angle steel is fixed to the right top of the corresponding feed shuttle slot through fixing bolts, and the stiffness coefficients of the supporting springs corresponding to the first screen, the second screen, the third screen and the fourth screen increase successively.
[0006] Preferably, the first screen inclination angle A1 = 25°, the second screen inclination angle A2 = 20°, the third screen inclination angle A3 = 15°, and the fourth screen inclination angle A4 = 10°.
[0007] Preferably, the aperture size of the first sieve is 4.75 mm, the aperture size of the second sieve is 9.5 mm, the aperture size of the third sieve is 21.5 mm, and the aperture size of the fourth sieve is 31.5 mm. The specific sizes of the sieve holes on the mesh surface are set according to the specifications of "Construction Crushed Stone" (GB / T 14685-2022) and "Construction Sand" (GB / T14684-2022).
[0008] Preferably, a tailings receiving plate is provided at the right end of the fourth screen, and a lower material shuttle trough is provided below the tailings receiving plate.
[0009] Preferably, the inclination angle of the support spring is equal to the inclination angle of the corresponding screen.
[0010] Preferably, the fixed swing arm pulley is welded to the unloading shuttle groove.
[0011] The second purpose of the utility model is achieved in this way, including the new type of stepped vibrating screen, and also includes a box, a vibration exciter, and a vibration-damping spring. The vibrating screen body and the unloading shuttle trough are all arranged in the box, the box is closed, and the feed hopper is arranged on the top of the box. Two vibration exciters are respectively arranged on both sides of the box, and the power and frequency of the four vibration exciters are the same. A vibration-damping spring is respectively arranged at the bottom of the two sides, and the stiffness coefficient and stiffness of the two vibration-damping springs are the same.
[0012] Beneficial effects of the utility model:
[0013] 1. The utility model uses multiple screens to screen sand and gravel. The multiple screens are inclined and connected in a step-like manner with gradually increasing screen apertures. Each screen is independently installed on the feed shuttle slot, which is convenient for maintenance and easy to replace the screen.
[0014] 2. The fixed ends of the screens of various apertures are fixed by fixed swing arm pulleys to improve the deformation of the fixed ends of the screens caused by external forces and extend the service life of the screens;
[0015] 3. The design of the inclined bottom of the screen connected to the spring. Since the equipment vibrates while screening, the screen will also produce secondary vibration under the action of the spring, which can reduce the blockage of materials; at the same time, it can reduce energy consumption and increase screening efficiency;
[0016] 4. The vibrating screening device of the utility model adopts a closed box, which greatly reduces the generation of dust during the screening process and reduces pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the connection structure between the screen and the fixed swing arm pulley;
[0019] Figure 3 It is a schematic diagram of the structure of the damping spring and the supporting angle steel;
[0020] Figure 4 Schematic diagram of the plane structure of the screen;
[0021] In the figure: 100-feeding hopper, 110-discharging shuttle trough, 120-vibrator, 130-screen, 131-first screen, 132-second screen, 133-third screen, 134-fourth screen, 140-damping spring, 150-tailings connecting plate, 160-support spring, 170-fixed swing arm pulley, 180-support angle steel, 190-fixing bolt, 200-box. DETAILED DESCRIPTION
[0022] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or substitutions made based on the teachings of the present invention belong to the protection scope of the present invention.
[0023] Example 1
[0024] As attached Figure 1~Figure 4The novel stepped vibrating screen of the present embodiment shown in the figure comprises a vibrating screen body, a feeding hopper 100 is arranged at the upper end of the vibrating screen body, a feeding shuttle slot 110 is arranged below the screen 130 of the vibrating screen body, the screen 130 of the vibrating screen body comprises a first screen 131, a second screen 132, a third screen 133, and a fourth screen 134 which are sequentially connected and have gradually increasing apertures, the inclination angles A1, A2, A3, and A4 of the first screen 131, the second screen 132, the third screen 133, and the fourth screen 134 gradually decrease along the inclination direction, and the angle A1 is the largest, so that the screen 130 is in a concave arc shape, the feeding shuttle slots 110 have four and are arranged sequentially from left to right, the first screen 131, the second screen 132, the third screen 133, and the fourth screen 134 are arranged sequentially from left to right, and ... The nets 134 correspond to the unloading shuttle slot 110 respectively, and the higher ends of the first screen 131, the second screen 132, the third screen 133, and the fourth screen 134 are connected to the left top of the corresponding unloading shuttle slot 110 through a fixed swing arm pulley 170, and the bottoms of the lower ends of the first screen 131, the second screen 132, the third screen 133, and the fourth screen 134 are respectively fixed on the supporting angle steel 180 through a supporting spring 160, and one side of the supporting angle steel 180 is fixed to the right top of the corresponding unloading shuttle slot 110 through a fixing bolt 190, and the stiffness coefficients of the supporting springs 160 corresponding to the first screen 131, the second screen 132, the third screen 133, and the fourth screen 134 increase in sequence; the inclination angle A1 of the first screen 131 = 25°, the second sieve 132 has an inclination angle A2 = 20°, the third sieve 133 has an inclination angle A3 = 15°, and the fourth sieve 134 has an inclination angle A4 = 10°; the first sieve 131 has a pore size of 4.75mm, the second sieve 132 has a pore size of 9.5mm, the third sieve 133 has a pore size of 21.5mm, and the fourth sieve 134 has a pore size of 31.5mm.
[0025] Example 2
[0026] The novel stepped vibrating screen of this embodiment is based on the embodiment 1, wherein the right end of the fourth screen 134 is provided with a tailings receiving plate 150, a lower material shuttle trough 110 is provided below the tailings receiving plate 150, the inclination angle of the support spring 160 is equal to the inclination angle of the corresponding screen, and the fixed swing arm pulley 170 is welded to the lower material shuttle trough 110.
[0027] The working principle and working process of the new stepped vibrating screen: the sand and gravel first contact the first screen 131, and are discharged through the corresponding feed shuttle slot 110 to become finished machine-made sand; the crushed stones that have not passed through the first screen 131 enter the second screen 132 for a second screening under the action of gravity; similarly, the crushed stones are screened by the third screen 133 and the fourth screen 134 in turn, the screened materials are discharged through the feed shuttle slot 110, and finally the screened materials are discharged through the tailings receiving plate 150; during the screening process, the support spring 160 cooperates with the fixed swing arm pulley 170, and the screen can be vibrated and screened under the action of an external vibration source; the inclination angles of the first screen 131, the second screen 132, the third screen 133, and the fourth screen 134 gradually decrease along the inclination direction, the purpose of which is to extend the material screening time and enhance the screening effect; the stiffness coefficient of the support spring 160 is increased successively, the purpose of which is to increase the discharge amount of the coarse material compared with the fine material, and the stiffness coefficient of the support spring 160 is increased successively to increase the support strength of the screen, so as to avoid the reduction of screening efficiency due to the compression of the material.
[0028] Example 3
[0029] The vibration screening device of this embodiment includes the new type of stepped vibration screen of Example 2, and also includes a box 200, a vibration exciter 120, and a shock-absorbing spring 140. The vibration screen body and the feed shuttle trough 110 are both arranged in the box 200, and the feed hopper 100 is arranged on the top of the box 200. Two vibration exciters 120 are respectively arranged on both sides of the box 200, and the power and frequency of the four vibration exciters 120 are the same. A shock-absorbing spring 140 is respectively arranged at the bottom of the two sides, and the stiffness coefficient and stiffness of the two shock-absorbing springs 140 are the same.
[0030] The working principle and working process of the vibration screening device: the box 200 provides a closed environment for the screening work, greatly reducing the spread of dust. The vibrator 120 serves as the vibration source, and the vibration-damping spring 140 is used to reduce the vibration of the box 200. Sand and gravel materials enter from the feed hopper 100 and are screened by the new stepped vibrating screen. The undersized materials are classified and discharged from the corresponding unloading shuttle trough 110, and finally the remaining oversized materials are discharged from the unloading shuttle trough 110 corresponding to the tailings receiving plate 150.
Claims
1. A novel stepped vibrating screen, comprising a vibrating screen body, a material inlet hopper (100) being arranged at the upper end of the vibrating screen body, a material discharge shuttle trough (110) being arranged below a screen mesh (130) of the vibrating screen body, characterized in that The screen (130) of the vibration screen body comprises a first screen (131), a second screen (132), a third screen (133), and a fourth screen (134) which are connected in sequence and have gradually increasing apertures. The inclination angles A1, A2, A3, and A4 of the first screen (131), the second screen (132), the third screen (133), and the fourth screen (134) gradually decrease along the inclination direction, and the angle A1 is the largest, so that the screen (130) is in a concave arc shape. There are four feed shuttle grooves (110) which are arranged in sequence from left to right. The first screen (131), the second screen (132), the third screen (133), and the fourth screen (134) respectively correspond to the feed shuttle grooves (110). The first screen (131) The first screen (131), the second screen (132), the third screen (133), and the fourth screen (134) are connected at their higher ends to the top of the left side of the corresponding material feed shuttle slot (110) via a fixed swing arm pulley (170); the bottoms of the lower ends of the first screen (131), the second screen (132), the third screen (133), and the fourth screen (134) are fixed to the support angle steel (180) via support springs (160); one side of the support angle steel (180) is fixed to the top of the right side of the corresponding material feed shuttle slot (110) via a fixing bolt (190); and the stiffness coefficients of the support springs (160) corresponding to the first screen (131), the second screen (132), the third screen (133), and the fourth screen (134) increase in sequence.
2. According to the novel stepped vibrating screen of claim 1, it is characterized in that The first screen (131) has an inclination angle A1 of 25°, the second screen (132) has an inclination angle A2 of 20°, the third screen (133) has an inclination angle A3 of 15°, and the fourth screen (134) has an inclination angle A4 of 10°.
3. According to the novel stepped vibrating screen of claim 1, it is characterized in that The first sieve (131) has a pore size of 4.75 mm, the second sieve (132) has a pore size of 9.5 mm, the third sieve (133) has a pore size of 21.5 mm, and the fourth sieve (134) has a pore size of 31.5 mm.
4. According to the novel stepped vibrating screen of claim 1, it is characterized in that A tailings receiving plate (150) is provided at the right end of the fourth screen (134), and a lower material shuttle trough (110) is provided below the tailings receiving plate (150).
5. According to claim 1, the novel stepped vibrating screen is characterized in that The inclination angle of the support spring (160) is equal to the inclination angle of the corresponding screen.
6. The novel stepped vibrating screen according to claim 1 is characterized in that The fixed swing arm pulley (170) is welded to the unloading shuttle groove (110).
7. A vibrating screening device, characterized in that The novel stepped vibrating screen comprises any one of claims 1 to 6, and also comprises a box (200), a vibrator (120), and a damping spring (140), wherein the vibrating screen body and the feed shuttle trough (110) are arranged in the box (200), and the feed hopper (100) is arranged on the top of the box (200), and two vibrators (120) are respectively arranged on both sides of the box (200), and the power and frequency of the four vibrators (120) are the same, and a damping spring (140) is respectively arranged at the bottom of both sides, and the two damping springs (140) have the same stiffness coefficient and rigidity.