Screen mesh protection device for reducing ore pulp impact
By designing a screen protection device for wet screening, the structure of ore feeding chutes, buffer troughs and buffering machines is used to slow down the slurry flow rate, solving the problem of screen wear caused by slurry shock, and achieving the effect of extending the screen service life and reducing production costs.
Patent Information
- Application Number
- CN202421588442.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-07
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-07
AI Technical Summary
During the wet screening process, the ore slurry impacts the screen at a higher flow rate, causing serious wear of the screen material, shortening the service life, increasing production costs and reducing production efficiency.
A screen protection device is designed, including ore feeding chute, buffer groove and buffering machine. Through the structural design of the buffer groove and buffering machine, the ore slurry flow rate is slowed down and the impact on the screen is reduced.
It effectively extends the service life of the screen, slows down the wear of concentrate screen equipment, reduces the impact of slurry splash and on-site hygiene, and avoids the problems of slurry blockage and increased labor among job workers.
Smart Images
Figure CN222890090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wet screening equipment, in particular to a screen protection device for reducing slurry impact. Background Art
[0002] As a common classification method in the field of mineral processing technology, wet screening technology is widely used in the separation and classification of minerals. This technology uses a screen to effectively separate mineral particles of different sizes to achieve the rational utilization and efficient recovery of mineral resources. However, there are some technical problems that need to be solved in the wet screening process. During the wet screening process, the slurry impacts the screen at a high flow rate, causing the screen to be subjected to greater mechanical stress. This continuous impact causes the screen material to wear rapidly, greatly shortening the service life of the screen. After the screen is severely worn, it needs to be replaced and maintained regularly or irregularly. Frequent replacement of the screen not only increases production costs, but also reduces production efficiency.
[0003] In order to reduce the wear of the screen, the existing technology usually adopts two methods: one is to use more wear-resistant materials to make the screen, such as wear-resistant screens or blind plates, to extend the service life of the screen; the other is to reduce the impact on the screen by reducing the slurry flow rate by setting baffles in the slurry feed chute.
[0004] However, these methods all have certain limitations: wear-resistant screens or blind plates can extend the service life, but they are expensive and may not completely avoid wear problems in some cases. The method of setting baffles in the ore chute to reduce the slurry flow rate may cause slurry splashing, affect the sanitation of the site, increase the workload of workers, and may even cause slurry blockage due to the baffle structure, affecting normal production. Utility Model Content
[0005] In view of the shortcomings of the prior art, the utility model provides a screen protection device for reducing the impact of slurry, effectively reducing the slurry flow rate and reducing the impact of slurry on the screen. It solves the problem of increasing equipment cost by using more wear-resistant materials to make screens in the prior art; it also avoids affecting the sanitary conditions on site, increasing the workload of workers on the job, and causing slurry blockage to affect normal production.
[0006] In order to solve the above-mentioned technical problems, the utility model provides the following core technical solutions: a screen protection device for reducing the impact of ore slurry, comprising a feeding chute, a concentrate screen, and a screen, wherein the feeding chute is fixedly arranged above one side of the concentrate screen, and the screen is arranged on the bottom surface of the concentrate screen; it also includes a buffer trough, a buffer bed and a support arm; the buffer trough is a trough-shaped structure with openings at both ends, one end opening of the buffer trough is fixedly connected to the feeding chute, the buffer bed is arranged between the other end opening of the buffer trough and the concentrate screen, and the buffer bed is fixedly connected to the support arm.
[0007] Compared with the prior art, the screen protection device for reducing slurry impact can effectively extend the service life of the screen at a lower cost; effectively reduce the wear of the concentrate screening equipment; reduce the slurry flow rate without causing slurry splashing and causing adverse effects on the sanitary conditions on site; the normal production will not be affected by slurry blockage during the operation of the equipment, thereby reducing the workload of workers on site and effectively ensuring the stability of production.
[0008] Furthermore, based on the above core technical solution, the material of the ore feeding chute and the buffer trough is stainless steel, and the ore feeding chute and the buffer trough are fixedly connected by welding.
[0009] Furthermore, based on the above core technical solution, the bottom surface of the buffer groove is trapezoidal, and the buffer groove is inclined downward.
[0010] Furthermore, based on the above core technical solution, the bottom surfaces of the ore feeding chute and the buffer tank are affixed with wear-resistant ceramic sheets.
[0011] Furthermore, based on the above core technical solution, the buffer bed is a coverless rectangular structure, and the buffer bed is made of steel plates.
[0012] Furthermore, based on the above core technical solution, the horizontal distance between the buffer bed and the buffer trough is 200 mm, and the vertical distance is 200 mm; the distance between the buffer bed and the bottom surface of the concentrate screen is 150 mm.
[0013] Furthermore, based on the above core technical solution, a lining plate is embedded inside the buffer bed, and the thickness of the lining plate is 30 mm.
[0014] Furthermore, based on the above core technical solution, the support arm is made of channel steel, one end of the support arm is fixedly connected to the buffer bed by welding, and the other end of the support arm is fixedly connected to the on-site equipment support structure.
[0015] The feed chute and buffer trough of the screen protection device are made of stainless steel and are welded and fixed to each other, making the device durable, wear-resistant and impact-resistant; the shape and structure design of the feed chute and buffer trough can meet the sufficient flow demand of the slurry while allowing the slurry to be dispersed in the buffer trough before entering the concentrate screen and slow down the flow rate before entering the buffer bed, effectively reducing the impact force of the slurry flowing into the buffer bed. The bottom surfaces of the feed chute and buffer trough are affixed with wear-resistant ceramic sheets, which have a better anti-wear effect and effectively extend the service life of the equipment. The structure of the buffer bed is set up and made of steel plates, which can well withstand the impact force when all the slurry flows in, further alleviating the flow rate of the slurry; the location design of the buffer bed is also to make the slurry enter the buffer bed before flowing into the concentrate screen, and then enter the concentrate screen at a lower flow rate; because the slurry has a short stay after entering the buffer bed, some coarse particles in the slurry will be deposited in the buffer bed. The coarse particles deposited in the buffer bed can reduce the impact of the subsequent slurry on the inside of the buffer bed, producing the effect of "ore grinding", which can avoid direct impact and wear on the buffer bed and extend the service life of the buffer bed. The lining plate is set in the buffer bed to avoid the direct impact on the bottom surface of the buffer bed when the slurry flows in, resulting in rapid wear of the bottom surface of the buffer bed, so that the slurry flows in and directly impacts and wears the lining plate; the use of the lining plate not only extends the service life of the buffer bed, but also because the lining plate is easy to replace after being worn, it greatly reduces the maintenance cost of the equipment. The support arm is the supporting component of the buffer bed. Since the concentrate screen is in an unstable vibration state, the buffer bed cannot be directly fixedly connected to the concentrate screen. The support arm makes the buffer bed stable and effectively bears the inflow impact of all slurry. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:
[0017] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model;
[0018] Figure 2 This is a schematic diagram of the second embodiment of the present utility model.
[0019] In the figure: 1. feed chute; 2. concentrate screen; 3. screen; 4. buffer trough; 5. buffer bed; 6. support arm; 7. wear-resistant ceramic sheet; 8. lining plate. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] Embodiment 1:
[0022] like Figure 1 As shown, a screen protection device for reducing the impact of ore pulp includes a feed chute 1, a concentrate screen 2, a screen 3, a buffer tank 4, a buffer bed 5 and a support arm 6. The feed chute 1 is fixedly arranged above one side of the concentrate screen 2, and the screen 3 is arranged on the bottom surface of the concentrate screen 2; the buffer tank 4 is a trough structure with two ends open, one end of the buffer tank 4 is fixedly connected to the feed chute 1, and the other end extends above the concentrate screen 2. The feed chute 1 and the buffer tank 4 are made of stainless steel and are fixedly connected to each other by welding, so that the device is durable, wear-resistant and impact-resistant. The chute mouth of the feeding chute 1 is 530mm wide and 530mm high; the bottom surface of the buffer trough 4 is an isosceles trapezoid, with an upper bottom length of 530mm, a lower bottom length of 1500mm, a height of 1385mm, and an angle of 60° between the hypotenuse and the lower bottom; the buffer trough 4 is inclined downward with a slope of 5°; the side length of the buffer trough 4 is 1600mm and the width is 600mm; while meeting the sufficient flow demand of the slurry, the slurry is dispersed in the buffer trough 4 before entering the concentrate screen 2 and the flow rate is slowed down before entering the buffer bed 5, which effectively reduces the impact force of the slurry flowing into the buffer bed 5. The buffer bed 5 is a coverless cuboid with a length of 1800mm, a width of 400mm and a depth of 230mm, and is made of a steel plate with a thickness of 5mm. The buffer bed 5 is arranged between the opening at the other end of the buffer tank 4 and the concentrate screen 2. The horizontal distance between the buffer bed 5 and the outlet of the buffer tank 4 on the side close to the buffer tank 4 is 200mm, and the vertical distance is 200mm. The distance between the buffer bed 5 and the bottom surface of the concentrate screen 2 is 150mm. The design of the buffer bed 5 can well withstand the impact force when all the slurry flows in, and further alleviates the flow rate of the slurry. The position design of the buffer bed 5 is also to make the slurry enter the buffer bed 5 before flowing into the concentrate screen 2, and then enter the concentrate screen 2 at a lower flow rate. Since the slurry has a short stay after entering the buffer bed 5, some coarse particles in the slurry will be deposited in the buffer bed 5. The coarse particles deposited in the buffer bed 5 can reduce the impact of the subsequent slurry flowing through on the inside of the buffer bed 5, producing the effect of "ore grinding", which can avoid direct impact and wear on the buffer bed 5 and extend the service life of the buffer bed 5. The support arm 6 is made of channel steel, one end of the support arm 6 is fixedly connected to the buffer bed 5 by welding, and the other end of the support arm 6 is fixedly connected to the on-site equipment support structure; the support arm 6 is a supporting component of the buffer bed 5. Since the concentrate screen 2 is in an unstable vibration state, the buffer bed 5 cannot be directly fixedly connected to the concentrate screen 2. The use of the support arm 6 makes the buffer bed 5 stable and effectively withstands the inflow impact of all slurry.
[0023] Compared with the prior art, the screen protection device for reducing the impact of slurry can effectively extend the service life of the screen 3 at a lower cost; effectively reduce the wear of the concentrate screen 2 equipment; reduce the slurry flow rate without causing slurry splashing and causing adverse effects on the sanitary conditions on site; the normal production will not be affected by slurry blockage during the operation of the equipment, thereby reducing the workload of workers on site and effectively ensuring the stability of production.
[0024] Embodiment 2:
[0025] like Figure 2 As shown, on the basis of the first embodiment, the present embodiment makes further improvements to the feed chute 1 and the buffer trough 4, and a 4 mm thick wear-resistant ceramic sheet 7 is attached to the bottom surface of the feed chute 1 and the buffer trough 4; the buffer bed 5 is also further improved, and a 30 mm thick lining plate 8 is added inside the buffer bed 5; the details are as follows:
[0026] A screen protection device for reducing slurry impact comprises a feed chute 1, a concentrate screen 2, a screen 3, a buffer tank 4, a buffer bed 5 and a support arm 6. The feed chute 1 is fixedly arranged above one side of the concentrate screen 2, and the screen 3 is arranged on the bottom surface of the concentrate screen 2; the buffer tank 4 is a trough structure with two ends open, one end of the buffer tank 4 is fixedly connected to the feed chute 1, and the other end extends to the top of the concentrate screen 2; the feed chute 1 and the buffer tank 4 are made of stainless steel and are fixedly connected to each other by welding, so that the device is durable, wear-resistant and impact-resistant. The chute mouth of the feed chute 1 is 530mm wide and 530mm high; the bottom surface of the buffer trough 4 is an isosceles trapezoid, with an upper bottom length of 530mm, a lower bottom length of 1500mm, a height of 1385mm, and an angle of 60° between the hypotenuse and the lower bottom; the buffer trough 4 is inclined downward with a slope of 5°; the side length of the buffer trough 4 is 1600mm and the width is 600mm; while meeting the sufficient flow demand of the slurry, the slurry is dispersed in the buffer trough 4 before entering the concentrate screen 2 and the flow rate is slowed down before entering the buffer bed 5, effectively reducing the impact force of the slurry flowing into the buffer bed 5. The bottom surfaces of the feed chute 1 and the buffer trough 4 are both affixed with a 4mm thick wear-resistant ceramic sheet 7, which makes the anti-wear effect better and effectively extends the service life of the equipment. The buffer bed 5 is an uncovered rectangular structure with a length of 1800 mm, a width of 400 mm, and a depth of 230 mm, and is made of a steel plate with a thickness of 5 mm; the buffer bed 5 is arranged between the opening at the other end of the buffer trough 4 and the concentrate screen 2, and the horizontal distance between the buffer bed 5 and the ore outlet of the buffer trough 4 on the side close to the buffer trough 4 is 200 mm, and the vertical distance is 200 mm; the distance between the buffer bed 5 and the bottom surface of the concentrate screen 2 is 150 mm. The design of the buffer bed 5 can well withstand the impact force when all the ore pulp flows in, and further alleviate the flow rate of the ore pulp; the position design of the buffer bed 5 is also to make the ore pulp enter the buffer bed 5 before flowing into the concentrate screen 2, and then enter the concentrate screen 2 at a lower flow rate; because the ore pulp has a short stay after entering the buffer bed 5, some coarse particles in the ore pulp will be deposited in the buffer bed 5, and the coarse particles deposited in the buffer bed 5 can reduce the impact of the subsequent ore pulp on the inside of the buffer bed 5, produce the effect of "ore grinding", can avoid direct impact and wear on the buffer bed 5, and extend the service life of the buffer bed 5. The buffer bed 5 is embedded with a lining plate 8, and the thickness of the lining plate 8 is 30mm; it can avoid the direct impact on the bottom surface of the buffer bed 5 when the ore pulp flows in, resulting in rapid wear of the bottom surface of the buffer bed 5, so that the ore pulp flows in and directly impacts and wears the lining plate 8; the use of the lining plate 8 not only extends the service life of the buffer bed 5, but also because the lining plate 8 is easy to replace after being worn, it greatly reduces the maintenance cost of the equipment.The support arm 6 is made of channel steel, one end of the support arm 6 is fixedly connected to the buffer bed 5 by welding, and the other end of the support arm 6 is fixedly connected to the on-site equipment support structure; the support arm 6 is a supporting component of the buffer bed 5. Since the concentrate screen 2 is in an unstable vibration state, the buffer bed 5 cannot be directly fixedly connected to the concentrate screen 2. The use of the support arm 6 makes the buffer bed 5 stable and effectively withstands the inflow impact of all slurry.
[0027] Compared with the prior art, the screen protection device for reducing the impact of slurry can effectively extend the service life of the screen 3 at a lower cost; effectively reduce the wear of the concentrate screen 2 equipment; reduce the slurry flow rate without causing slurry splashing, and will not have an adverse effect on the sanitary conditions on site; the normal production will not be affected by slurry blockage during the operation of the equipment, reducing the workload of workers on site and effectively ensuring the stability of production. A 4mm thick wear-resistant ceramic sheet 7 is attached to the bottom of the ore feeding chute 1 and the buffer trough 4, so that the screen protection device has a better wear resistance and effectively extends the service life of the equipment. A 30mm thick lining plate 8 is added inside the buffer bed 5 to avoid direct impact on the bottom of the buffer bed 5 when the slurry flows in, resulting in rapid wear of the bottom of the buffer bed 5, so that the lining plate 8 is directly impacted and worn when the slurry flows in; the use of the lining plate 8 not only extends the service life of the buffer bed 5, but also because the lining plate 8 is easy to replace after being worn, it greatly reduces the maintenance cost of the equipment.
[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. A screen protection device for reducing slurry impact, comprising a feed chute (1), a concentrate screen (2), and a screen (3), wherein the feed chute (1) is fixedly arranged above one side of the concentrate screen (2), and the screen (3) is arranged on the bottom surface of the concentrate screen (2); characterized in that: It also comprises a buffer trough (4), a buffer bed (5) and a support arm (6); the buffer trough (4) is a trough-shaped structure with openings at both ends, one end opening of the buffer trough (4) is fixedly connected to the feed chute (1), the buffer bed (5) is arranged between the other end opening of the buffer trough (4) and the concentrate screen (2), and the buffer bed (5) is fixedly connected to the support arm (6).
2. A screen protection device for reducing slurry impact according to claim 1, characterized in that: The material of the ore feeding chute (1) and the buffer trough (4) is stainless steel, and the ore feeding chute (1) and the buffer trough (4) are fixedly connected by welding.
3. A screen protection device for reducing slurry impact according to claim 1, characterized in that: The bottom surface of the buffer groove (4) is trapezoidal, and the buffer groove (4) has an oblique downward trend.
4. A screen protection device for reducing slurry impact according to claim 1, characterized in that: The bottom surfaces of the ore feeding chute (1) and the buffer tank (4) are both affixed with wear-resistant ceramic sheets (7).
5. A screen protection device for reducing slurry impact according to claim 1, characterized in that: The buffer bed (5) is a coverless rectangular parallelepiped structure, and the buffer bed (5) is made of steel plates.
6. A screen protection device for reducing slurry impact according to claim 1, characterized in that: The horizontal distance between the buffer bed (5) and the buffer trough (4) is 200 mm, and the vertical distance is 200 mm; the distance between the buffer bed (5) and the bottom surface of the concentrate screen (2) is 150 mm.
7. A screen protection device for reducing slurry impact according to claim 1, characterized in that: A lining plate (8) is embedded inside the buffer bed (5), and the thickness of the lining plate (8) is 30 mm.
8. The screen protection device for reducing slurry impact according to claim 1, characterized in that: The support arm (6) is made of channel steel, one end of the support arm (6) is fixedly connected to the buffer bed (5) by welding, and the other end of the support arm (6) is fixedly connected to the on-site equipment support structure.