Vertical stepped vibrating screen
The staggered sieve plates and sealing design of the vertical stepped vibrating screen solve the problems of large footprint and dust pollution of blast furnace sintering vibrating screens, and achieve efficient and environmentally friendly screening.
Patent Information
- Application Number
- CN202423293922.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The existing sintering vibrating screen for blast furnaces occupies a large area and easily generates dust pollution when vibrating.
The vertical stepped vibrating screen structure is adopted, including staggered screen plates and chute plates, combined with sealing components and rubber sleeves to reduce the footprint and prevent dust from escaping.
It effectively reduces the equipment footprint, prevents dust pollution, and improves screening efficiency and environmental cleanliness.
Smart Images
Figure CN223417718U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to blast furnace sintering material screening, in particular to a vertical stepped vibrating screen. Background Art
[0002] Blast furnace sinter material is prepared by mixing, granulating, and proportioning various raw materials (concentrate, ore powder, fuel, flux, return ore, and iron-containing production waste) in a specific proportion to obtain a sinter material that meets the requirements. Ignition of the sinter material generates high temperatures through the combustion of carbon and oxidation of iron minerals, softening and melting some of the components in the sinter material. Chemical reactions occur to produce a certain amount of liquid phase, which then bond together upon cooling. The product of this process is called sintered ore. After the sinter material is formed, it needs to be screened using a vibrating screen to ensure that it meets the requirements for subsequent blast furnace sintering. However, the actual vibrating screening process still has the following drawbacks:
[0003] At present, the sintering vibrating screen for blast furnace generally has the problem of large floor space. In the entire equipment workshop and other places, a large floor space is required for screening processing, which needs to be improved;
[0004] Secondly, most of the current sintering vibrating screens used in blast furnaces are open-type vibrating screens. Firstly, the open type itself is prone to generate dust. Secondly, the use of vibrating screening will aggravate the escape of dust and cause serious dust pollution. Utility Model Content
[0005] The purpose of the utility model is to provide a vertical stepped vibrating screen, which solves the problems of a large floor space occupied by the vibrating screen and serious dust pollution caused by the vibrating screen when working, by arranging a screen box, a screen plate, a material chute, an upper cover plate, a lower cover plate, a feed hopper, a sealing assembly, a first rubber sleeve and a second rubber sleeve.
[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0007] The utility model is a vertical step vibrating screen, comprising a screen box, an upper cover, a sealing assembly, a lower cover, a screen plate and a material sliding plate. The screen box comprises two side plates and an end plate symmetrically fixed between the two side plates, and a square frame structure is formed between the two side plates and the two end plates. The screen box is provided with inclined and staggered screen plates and material sliding plates in a front view, and a material sliding plate with an inclination angle opposite to that of the screen plate is provided below each screen plate. Both sides of the screen plate and the material sliding plate are fixed to the opposite surfaces of the two side plates.
[0008] An upper cover is fixed on the upper end of the screen box, and a feed hopper is fixed through the upper cover, and a feed pipe is provided above the feed hopper, and a sealing component is provided between the feed pipe and the upper end of the feed hopper for soft connection;
[0009] The lower end of the screen box is fixed with a lower cover plate, and the bottom of the lower cover plate is fixed with a main discharge hopper and two auxiliary discharge hoppers.
[0010] Further, the outer side of each of the two side plates is fixed with a mounting plate, and a vibration motor is fixed on the mounting plate.
[0011] Further, two baffle plates are fixed between the two side plates, and the two baffle plates are located between the two end plates.
[0012] Further, the screen plate is inclined from the baffle plate to the center of the screen box, and the material guide plate is inclined from the center of the screen box to the baffle plate.
[0013] Further, the lower end of each of the two baffle plates is provided with a through impurity discharge hole, and a material falling channel is arranged between the baffle plate and the end plate adjacent to the baffle plate.
[0014] Further, the sealing assembly comprises a sealing rubber pad arranged between the bottom end of the feeding pipe and the upper end of the feeding hopper.
[0015] Further, the main discharge hopper is located below the region between the two baffle plates, and a main discharge pipe is arranged below the main discharge hopper.
[0016] Further, an inclined material guide plate is arranged above the uppermost screen plate.
[0017] The utility model has the advantages of the following beneficial effects:
[0018] The utility model solves the problem of the large occupation area of the vibrating screen by arranging a screen box, a screen plate and a material sliding plate; the utility model adopts a vertical screen box structure, which changes the traditional horizontal flat large-volume screen box structure. The traditional vibrating screen adopts a screen plate or multiple stacked screen plates for screening. In order to ensure its screening effect, it is necessary to ensure sufficient screening time and area, so the screen plates are usually set larger, which leads to a large occupation area of the vibrating screen. The utility model has a vertical screen box structure, and multiple screen plates are arranged in a staggered inclined distribution structure. The sintered material enters the equipment from the top and reaches the first set of screen plates at the top. Due to the large inclination of the screen plates, a slight vibration causes the material to enter the second set of screen plates in a symmetrical direction. During this process, the material screened out by the first screen plate enters the blanking channel through the chute plate with the opposite inclination arranged below; the second screen plate repeats the action of the first screen plate, screening alternately from left to right. This stepped arrangement of the screen plates reduces the space layout of the equipment; the material on the screen and the material under the screen are scientifically distributed, and fall into the blanking channel and the discharge area in a concentrated manner; thereby ensuring sufficient screening time and screening area, but greatly reducing the equipment's footprint, making it more practical, and the large inclination design of the screen plates makes screening more convenient and saves vibration driving force.
[0019] The utility model solves the problem of serious dust pollution caused by the vibration screen when working by arranging an upper cover plate, a lower cover plate, a feed hopper, a sealing component, a rubber sleeve one and a rubber sleeve two; when feeding, the external sintered material is introduced into the feed hopper through the feed pipe, and the feed hopper and the feed pipe are sealed and softly connected by the sealing component; the port between the feed hopper and the feed pipe is sealed by a sealing rubber gasket, and the inner and outer rubber rings are used to cover the inner and outer walls of the feed hopper and the feed pipe port to increase the sealing effect and avoid dust from accumulating during screening. Dust escapes from the gaps, and dust removal ports can be installed on the side panels for dust collection. Secondly, during discharging, qualified large-particle materials enter the main discharging hopper, and the small-particle materials after screening enter the auxiliary discharging hopper through the dropping channel. The main discharging hopper is softly connected to the main discharging pipe through a rubber sleeve 1, and the connection is kept sealed. The auxiliary discharging hopper is softly connected to the auxiliary discharging pipe through a rubber sleeve 2, and the connection is kept sealed. In this way, there will be no gaps for dust to escape, ensuring the cleanliness of the surrounding environment without causing major pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.
[0021] Figure 1 It is a three-dimensional diagram of a vertical stepped vibrating screen;
[0022] Figure 2 The connection diagram of the screen box, upper cover and lower cover;
[0023] Figure 3 This is a cross-sectional view of the interior of the screen box;
[0024] Figure 4 This is the structural diagram of the screen plate and the slide plate;
[0025] Figure 5 This is a cross-sectional connection diagram of the upper cover plate, feed pipe, and sealing assembly;
[0026] Figure 6 It is a cross-sectional connection diagram of the lower cover plate and the main discharge pipe and auxiliary discharge pipe.
[0027] Reference numerals:
[0028] 1. Screen box; 101. Side plate; 102. End plate; 103. Ear plate; 104. Mounting plate; 105. Vibration motor; 106. Spring; 107. Support leg; 1071. Reinforcement rod; 108. Dropping channel; 2. Upper cover; 201. Feed hopper; 3. Feed pipe; 4. Sealing assembly; 401. Sealing rubber gasket; 402. Inner rubber ring; 403. Outer rubber ring; 5. Lower cover; 501. Main discharge hopper; 502. Auxiliary discharge hopper; 6. Main discharge pipe; 601. Rubber sleeve 1; 7. Auxiliary discharge pipe; 701. Rubber sleeve 2; 8. Screen plate; 801. Baffle bar 1; 802. Screen grid; 9. Slide plate; 901. Baffle bar 2; 10. Baffle; 1001. Trash outlet; 11. Guide plate. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0030] See also Figure 1-6 As shown, the utility model is a vertical step vibrating screen, comprising a screen box 1, an upper cover plate 2, a sealing assembly 4, a lower cover plate 5, a screen plate 8 and a material sliding plate 9. The screen box 1 comprises two side plates 101 and an end plate 102 symmetrically fixed between the two side plates 101, and a square frame structure is formed between the two side plates 101 and the two end plates 102. The screen box 1 is provided with inclined and staggered screen plates 8 and material sliding plates 9 in a front view, and a material sliding plate 9 with an opposite inclination angle to the screen plate 8 is provided below each screen plate 8. Both sides of the screen plate 8 and the material sliding plate 9 are fixed to the opposite surfaces of the two side plates 101.
[0031] An inclined material guide plate 11 is further provided above the uppermost sieve plate 8, and both sides of the material guide plate 11 are fixedly connected to the opposite surfaces of the two side plates 101, and the material guide plate 11 is inclined toward the upper surface of the uppermost sieve plate 8;
[0032] First, the screen box 1 is fixed by two side plates 101 and two end plates 102 to form a square frame structure, which is in a vertical position. Multiple screen plates 8 and chute plates 9 are staggered in the screen box 1. When the sintered material to be screened enters the screen box 1, it is first buffered by the guide plate 11 and enters the first set of screen plates 8 at the top. Because the screen plates 8 have a large inclination angle, they vibrate slightly to cause the material above the first screen plate 8 to enter the second set of screen plates 8 in a symmetrical direction. In this process, the material screened by the first screen plate 8 passes through the chute plates 9 with the opposite inclination arranged below it and enters the blanking channel 108; the second screen plate 8 repeats the action of the first screen plate 8, screening alternately from left to right, and repeats this process until all the screen plates 8 have completed screening the material;
[0033] An upper cover plate 2 is fixed to the upper end of the screen box 1, and a feed hopper 201 is fixed through the upper cover plate 2, and a feed pipe 3 is provided above the feed hopper 201, and a sealing component 4 is provided between the feed pipe 3 and the upper end of the feed hopper 201 for soft connection;
[0034] The sealing assembly 4 includes a sealing rubber gasket 401 placed between the bottom end of the feed pipe 3 and the upper end of the feed hopper 201, and outer rubber rings 403 are fixed to the outer edges of the upper and lower ends of the sealing rubber gasket 401, and inner rubber rings 402 are fixed to the inner edges of the upper and lower ends of the sealing rubber gasket 401. The inner rubber ring 402 and the outer rubber ring 403 above the sealing rubber gasket 401 respectively contact the inner and outer walls of the lower end of the feed pipe 3, and the inner rubber ring 402 and the outer rubber ring 403 below the sealing rubber gasket 401 respectively contact the inner and outer walls of the upper end of the feed hopper 201;
[0035] When feeding, the external sintered material is introduced through the feed pipe 3 and enters the feed hopper 201. The feed hopper 201 and the feed pipe 3 are sealed and softly connected by the sealing component 4. The port between the feed hopper 201 and the feed pipe 3 is sealed by the sealing rubber gasket 401. The inner and outer rubber rings 402 and 403 are used to cover the inner and outer walls of the ports of the feed hopper 201 and the feed pipe 3 to increase the sealing effect and prevent dust from escaping from the gap during screening. To ensure stability, screws or clamps can be added to fix the outer rubber ring 403 to increase the stability between the outer rubber ring 403 and the corresponding feed pipe 3 and the feed hopper 201;
[0036] Mounting plates 104 are fixed to the outer sides of the two side panels 101 facing away from each other, and a vibration motor 105 is fixed to the mounting plates 104. Ear plates 103 are fixed to the surfaces of the side panels 101 at both ends of the mounting plates 104, and springs 106 are fixed to the bottom of the ear plates 103. A support leg 107 is fixed to the bottom end of the spring 106, and a reinforcing rod 1071 is also fixed between the two support legs 107 on the same side of the side panel 101.
[0037] The mounting plate 104 is used to install the vibration motor 105, which provides the vibration source for screening. The legs 107 are supported on the ground and connected to the ear plate 103 via the spring 106. The ear plate 103 is connected to the side plate 101, so as to transmit as little vibration as possible to the ground and reduce the deviation of the entire equipment.
[0038] Two baffles 10 are fixed between the two side plates 101, and the two baffles 10 are located between the two end plates 102. All sieve plates 8 and material slide plates 9 are set between the two baffles 10, and the higher ends of all sieve plates 8 are fixed to the baffles 10 adjacent to them, and the lower ends of all material slide plates 9 are fixed to the baffles 10 adjacent to them, and the bottom end of each sieve plate 8 is fixed to the upper end of the material slide plate 9 closest to it.
[0039] The baffle 10 limits the screening area of the screen plate 8, and the lower particulate material screened by the screen plate 8 enters the chute plate 9 and is guided away.
[0040] The sieve plate 8 is tilted from the baffle 10 toward the center of the sieve box 1, and the material sliding plate 9 is tilted from the center of the sieve box 1 toward the baffle 10; a sieve grid 802 is fixed through the interior of the sieve plate 8, and a baffle 1 801 is fixed on both sides of the upper surface of the sieve plate 8, and a baffle 2 901 is fixed on both sides of the upper surface of the material sliding plate 9;
[0041] The sieve plate 8 is screened through the sieve grid 802, and a baffle 1 801 is provided above it to assist in centralized screening of the material, and a baffle 2 901 on the material sliding plate 9 is used to assist in centralized discharge of the material.
[0042] A through impurity discharge port 1001 is provided on the baffle 10 above the lower end of each material sliding plate 9 , and a material discharge channel 108 is provided between the baffle 10 and an end plate 102 adjacent thereto, and the impurity discharge port 1001 is communicated with the material discharge channel 108 .
[0043] The screened material enters the upper surface of the chute plate 9 and is discharged, enters the material discharge channel 108 along the impurity discharge port 1001 , and falls into the auxiliary discharge hopper 502 .
[0044] A lower cover plate 5 is fixed to the lower end of the screen box 1, and a main discharge hopper 501 and two auxiliary discharge hoppers 502 are fixed through the bottom of the lower cover plate 5;
[0045] The main discharge hopper 501 is located directly below the area between the two baffles 10, and a main discharge pipe 6 is provided below the main discharge hopper 501, and the upper end of the main discharge pipe 6 and the lower end of the main discharge hopper 501 are jointly covered with a rubber sleeve 601; the auxiliary discharge hopper 502 is located directly below the blanking channel 108, and an auxiliary discharge pipe 7 is provided below the auxiliary discharge hopper 502, and the upper end of the auxiliary discharge pipe 7 and the lower end of the auxiliary discharge hopper 502 are jointly covered with a rubber sleeve 2 701.
[0046] During discharging, qualified large-particle materials passing through all the sieve plates 8 enter the main discharging hopper 501, and the small-particle materials after screening enter the auxiliary discharging hopper 502 through the dropping channel 108. The main discharging hopper 501 is softly connected to the main discharging pipe 6 through the rubber sleeve 1 601 below, and the sealing of the connection is maintained. The auxiliary discharging hopper 502 is softly connected to the auxiliary discharging pipe 7 through the rubber sleeve 2 701 below, and the sealing of the connection is maintained, so that the entire screening process is carried out in the screen box 1, and the connection between the inlet and outlet materials is sufficiently sealed to avoid dust leakage.
[0047] The specific working principle of the present invention is as follows: first, the external sintering material is connected to the feed pipe 3 to introduce the feed into the feed hopper 201, the feed hopper 201 and the feed pipe 3 are sealed and softly connected by the sealing component 4, the port between the feed hopper 201 and the feed pipe 3 is sealed by the sealing rubber gasket 401, and the inner and outer walls of the ports of the feed hopper 201 and the feed pipe 3 are covered with the inner and outer rubber rings 402 and the outer rubber rings 403 to increase the sealing performance; when the sintering material to be screened enters the interior of the screen box 1, it is first buffered by the guide plate 11 and enters the first set of sieve plates 8 at the top. Because the sieve plates 8 have a large inclination angle, they vibrate slightly to make the material above the first sieve plate 8 enter the opposite On the second set of sieve plates 8 in the weighing direction, during this process, the material screened out by the first sieve plate 8 enters the discharge channel 108 through the chute plate 9 with the opposite inclination arranged below it; the second sieve plate 8 repeats the action of the first sieve plate 8, screening alternately from left to right, and repeats this process until all sieve plates 8 have completed screening of the material; finally, the qualified large particle material passing through all sieve plates 8 enters the main discharge hopper 501, and the main discharge hopper 501 is softly connected to the main discharge pipe 6 through a rubber sleeve 1 601 below, and the qualified large particle material is discharged from the main discharge pipe 6; the auxiliary discharge hopper 502 is softly connected to the auxiliary discharge pipe 7 through a rubber sleeve 2 701 below, and the small particle material is discharged from the auxiliary discharge pipe 7.
[0048] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are within the scope of protection of the present invention.
Claims
1. A vertical step vibrating screen, comprising a screen box (1), an upper cover plate (2), a sealing assembly (4), a lower cover plate (5), a screen plate (8) and a material sliding plate (9), characterized in that: The screen box (1) comprises two side plates (101) and an end plate (102) symmetrically fixed between the two side plates (101), and a square frame structure is formed between the two side plates (101) and the two end plates (102). The screen box (1) is provided with inclined and staggered screen plates (8) and material sliding plates (9) when viewed from the front, and a material sliding plate (9) with an inclination angle opposite to that of the screen plate (8) is provided below each screen plate (8). Both sides of the screen plate (8) and the material sliding plate (9) are fixed to opposite surfaces of the two side plates (101); An upper cover plate (2) is fixed to the upper end of the screen box (1), and a feed hopper (201) is fixed through the upper cover plate (2), and a feed pipe (3) is provided above the feed hopper (201), and a sealing component (4) is provided between the feed pipe (3) and the upper end of the feed hopper (201) for flexible connection; A lower cover plate (5) is fixed to the lower end of the screen box (1), and a main discharge hopper (501) and two auxiliary discharge hoppers (502) are fixed through the bottom of the lower cover plate (5).
2. The vertical step vibrating screen according to claim 1, characterized in that: Mounting plates (104) are fixed on the outer surfaces of the two side plates (101) facing away from each other, and a vibration motor (105) is fixed on the mounting plates (104). Ear plates (103) are fixed on the surfaces of the side plates (101) at both ends of the mounting plates (104), and a spring (106) is fixed on the bottom of the ear plate (103). A support leg (107) is fixed at the bottom end of the spring (106), and a reinforcing rod (1071) is also fixed between the two support legs (107) on the same side of the side plate (101).
3. The vertical step vibrating screen according to claim 1, characterized in that: Two baffles (10) are fixed between the two side plates (101), and the two baffles (10) are located between the two end plates (102). All the sieve plates (8) and the material slide plates (9) are arranged between the two baffles (10), and the higher ends of all the sieve plates (8) are fixed to the baffles (10) adjacent thereto, and the lower ends of all the material slide plates (9) are fixed to the baffles (10) adjacent thereto, and the bottom end of each sieve plate (8) is fixed to the upper end of the material slide plate (9) closest thereto.
4. The vertical stepped vibrating screen according to claim 3, characterized in that: The sieve plate (8) is tilted from the baffle (10) toward the center of the sieve box (1), and the material sliding plate (9) is tilted from the center of the sieve box (1) toward the baffle (10); a sieve grid (802) is fixed through the interior of the sieve plate (8), and a first baffle (801) is fixed on both sides of the upper surface of the sieve plate (8), and a second baffle (901) is fixed on both sides of the upper surface of the material sliding plate (9).
5. The vertical step vibrating screen according to claim 3, characterized in that: A through impurity discharge port (1001) is provided on the baffle (10) above the lower end of each of the material sliding plates (9), and a material drop channel (108) is provided between the baffle (10) and an end plate (102) adjacent thereto, and the impurity discharge port (1001) is communicated with the material drop channel (108).
6. The vertical stepped vibrating screen according to claim 1, characterized in that: The sealing assembly (4) includes a sealing rubber gasket (401) placed between the bottom end of the feed pipe (3) and the upper end of the feed hopper (201), and outer rubber rings (403) are fixed at the outer edges of the upper and lower ends of the sealing rubber gasket (401), and inner rubber rings (402) are fixed at the inner edges of the upper and lower ends of the sealing rubber gasket (401). The inner rubber ring (402) and the outer rubber ring (403) above the sealing rubber gasket (401) respectively contact the inner and outer walls of the lower end of the feed pipe (3), and the inner rubber ring (402) and the outer rubber ring (403) below the sealing rubber gasket (401) respectively contact the inner and outer walls of the upper end of the feed hopper (201).
7. The vertical stepped vibrating screen according to claim 5, characterized in that: The main discharge hopper (501) is located directly below the area between the two baffles (10), and a main discharge pipe (6) is provided below the main discharge hopper (501), and a rubber sleeve (601) is provided on the outer side of the upper end of the main discharge pipe (6) and the lower end of the main discharge hopper (501); the auxiliary discharge hopper (502) is located directly below the material discharge channel (108), and an auxiliary discharge pipe (7) is provided below the auxiliary discharge hopper (502), and a rubber sleeve (701) is provided on the outer side of the upper end of the auxiliary discharge pipe (7) and the lower end of the auxiliary discharge hopper (502).
8. The vertical stepped vibrating screen according to claim 1, characterized in that: An inclined material guide plate (11) is further provided above the uppermost sieve plate (8), and both sides of the material guide plate (11) are fixedly connected to opposite surfaces of the two side plates (101), and the material guide plate (11) is inclined toward the upper surface of the uppermost sieve plate (8).