Screen mesh and vibrating screen for increasing proportion of fine-fraction ore
By using multiple square screen plates of different sizes to splice the screen mesh in the vibrating screen and setting up a damage monitoring screen, the problems of low proportion of fine-grained ore and difficulty in detecting screen damage are solved, thereby improving production efficiency and screen life.
Patent Information
- Application Number
- CN202421809536.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In existing vibrating screens, the proportion of fine-grained ore is low, which affects the grinding efficiency of ball mills, and screen damage is difficult to detect quickly, resulting in low production efficiency.
The screen is made of multiple square screens of different sizes. The screens are connected in a detachable manner and a damage monitoring screen is set up to achieve a gradient change in the size of the screen holes, which facilitates the replacement of screens and the quick detection of damage.
It increases the proportion of fine-grained ore, improves the grinding efficiency of the ball mill, reduces the maintenance cost of the screen, and enables the rapid detection and replacement of damaged screen plates, ensuring continuous production.
Smart Images
Figure CN223465073U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of vibrating screen, in particular to a screen cloth and vibrating screen that promote fine particle grade ore proportion. BACKGROUND
[0002] Vibrating screen is a kind of mechanical equipment using vibrating screen principle to classify materials, and is widely used in mine site screening sandstone product classification, in the prior art, the screen cloth in vibrating screen is usually a whole screen cloth with uniform size, since vibrating screen can let the ore smaller than screen hole pass, therefore, as long as the ore is smaller than the screen hole of vibrating screen, it can pass, in actual situation, when selecting the screen cloth with larger aperture, the proportion of coarse particle diameter ore passing through the screen cloth is usually too high, and the proportion of fine particle diameter ore is very low, and the proportion of coarse particle diameter ore is too high, which greatly influences the grinding efficiency of subsequent ball mill, thereby influencing the processing capacity of the whole system, if selecting the screen cloth with too small aperture, the ore amount passing through the screen cloth is obviously less, which does not meet the actual production demand.
[0003] In order to meet the actual production demand and improve the grinding efficiency of ball mill, a vibrating screen capable of promoting fine particle grade ore proportion is urgently needed. CONTENT OF THE UTILITY MODEL
[0004] The first purpose of the utility model is to provide a screen cloth capable of promoting fine particle grade ore proportion.
[0005] The second purpose of the utility model is to provide a vibrating screen capable of promoting fine particle grade ore proportion.
[0006] In order to achieve the above purposes, the inventor provides the following technical scheme:
[0007] A screen cloth capable of promoting fine particle grade ore proportion, the screen cloth is composed of multiple square screen plates with screen hole size AxB mm, screen hole size CxD mm and screen hole size ExF mm, wherein A>C>E, and B>D>F.
[0008] Further, along the ore flow direction, each column has square screen plates with screen hole size AxB mm, screen hole size CxD mm and screen hole size ExF mm.
[0009] Further, each square screen plate is connected in a detachable manner.
[0010] Further, the square sieve plate is reserved with a preset position around, a plurality of through holes are arranged on the preset position; the square sieve plate is further equipped with a plurality of bolts and a plurality of nuts matched with the through holes; the adjacent preset positions of the adjacent two square sieve plates are overlapped, the through holes on the adjacent preset positions of the adjacent two square sieve plates are coincided, and the bolt is sequentially threaded through the through holes of the opposite positions of the adjacent two square sieve plates and is threadedly connected with the nut.
[0011] Further, the square sieve plate is reserved with a preset position around, a plurality of through holes are arranged on the preset position; the square sieve plate is further equipped with a plurality of bolts and a plurality of nuts matched with the through holes; the adjacent preset positions of the adjacent two square sieve plates are overlapped, the through holes on the adjacent preset positions of the adjacent two square sieve plates are coincided, and the bolt is sequentially threaded through the through holes of the opposite positions of the adjacent two square sieve plates and is threadedly connected with the nut.
[0012] A vibrating screen for improving the proportion of fine particle grade ore, comprising a box body and a base; a vibrating motor is installed on the base and connected with the bottom of the box body; the top of the box body is communicated with a feeding pipe;
[0013] A first screen is obliquely arranged in the box body; the first screen is composed of a plurality of square sieve plates with different sizes of sieve holes, i.e., A×B mm, C×D mm and E×F mm, wherein A>C>E and B>D>F.
[0014] A first discharge port is arranged on the side of the box body and connected with the bottom end of the first screen.
[0015] Further, a second screen parallel to the first screen is arranged above the first screen; the size of the sieve hole of the second screen is G×H mm, wherein G>A and H>B; a second discharge port is arranged on the side of the box body and connected with the bottom end of the second screen.
[0016] Further, a first damage monitoring screen is obliquely arranged between the first screen and the second screen; the size of the sieve hole of the first damage monitoring screen is I×J mm, wherein I is slightly greater than or equal to G and J is slightly greater than or equal to H; a third discharge port is arranged on the side of the box body and connected with the bottom end of the damage monitoring screen.
[0017] Further, a second damage monitoring screen is obliquely arranged below the first screen; the size of the sieve hole of the second damage monitoring screen is L×M mm, wherein L is slightly greater than or equal to A and M is slightly greater than or equal to B; a fourth discharge port is arranged on the side of the box body and connected with the bottom end of the second damage monitoring screen.
[0018] Further, the first damage monitoring screen is staggered with the first screen and the second screen.
[0019] Further, the second damage monitoring screen is arranged in an interlaced manner with the first screen and the second screen.
[0020] The technical scheme of the utility model embodiment has at least the following advantages and beneficial effects:
[0021] 1. The screen of the utility model is spliced by square screen plates with different screen hole sizes, which can improve the proportion of fine particle grade ore.
[0022] 2. The plurality of square screen plates of the screen of the utility model are detachably connected, which facilitates the installation and replacement of screen plates with different screen holes to achieve a suitable proportion of fine particle grade ore.
[0023] 3. The damage monitoring screen arranged on the vibrating screen can intuitively and quickly find the damage of the screen, and since the plurality of screen plates are detachably connected, the damaged screen plate can be conveniently replaced without replacing the entire screen, thereby saving costs. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment.
[0025] Figure 1 The screen structure diagram of the plurality of screen plates spliced for the utility model embodiments 1 and 2;
[0026] Figure 2 The adjacent square screen plate preset position superposition structure diagram of the screen for the utility model embodiment 1;
[0027] Figure 3 The adjacent square screen plate connection mode structure diagram of the screen for the utility model embodiment 2;
[0028] Figure 4 The vibrating screen structure diagram for the utility model embodiment 3;
[0029] Legend: 1-square screen plate, 2-preset position, 21-through hole, 22-clamp block, 23-clamp slot, 3-box body, 4-base, 5-vibration motor, 6-feeding pipe, 8-first screen, 81-first discharge port, 7-second screen, 71-second discharge port, 9-first damage monitoring screen, 91-third discharge port, 10-second damage monitoring screen, 101-fourth discharge port. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the utility model embodiments more clear, the following will combine the drawings in the utility model embodiments to clearly and completely describe the technical scheme in the utility model embodiments.
[0031] Embodiment 1
[0032] A screen for improving the proportion of fine particle grade ore, the screen is composed of 18 square sieve plates 1 with a sieve size of 12x18mm, 11 square sieve plates 1 with a sieve size of 10x16mm, and 8 square sieve plates 1 with a sieve size of 8x16mm, which are spliced into 7 rows and 5 columns, and each column along the ore flow direction has a square sieve plate 1 with a sieve size of 12x18mm, a square sieve plate 1 with a sieve size of 10x16mm, and a square sieve plate 1 with a sieve size of 8x16mm.
[0033] If the sieve size of the screen is 12x18mm, it is found that the proportion of 11-12mm ore in the ore under the vibrating screen is relatively high, which can reach more than 90%, and the proportion of ore smaller than 7mm is only about 50%, and the proportion of ore in the interval of 7-12mm has a great influence on the grinding effect of the subsequent ball mill, thereby affecting the processing capacity of the entire system and reducing the production efficiency.
[0034] Due to the addition of 10x16mm and 8x16mm sieve sizes in the screen, part of the 11-12mm particle size ore cannot pass through the screen smoothly, thereby greatly improving the proportion of ore smaller than 7mm, and improving the production efficiency.
[0035] The length of each square sieve plate 1 in the embodiment is 1220mm, the width is 300mm, and the thickness is 40mm.
[0036] In order to facilitate the installation and replacement of sieve plates with different sieve sizes to achieve a suitable proportion of fine particle grade ore, the square sieve plate 1 in the embodiment is detachably connected, and the detachable connection is achieved by using bolts and nuts.
[0037] Preferably, the square sieve plate 1 has a predetermined position 2 reserved around the periphery, a plurality of through holes 21 are formed in the predetermined position 2, and a plurality of bolts and nuts are provided for cooperation. The adjacent predetermined positions 2 of the adjacent two square sieve plates 1 are overlapped, the through holes 21 in the adjacent predetermined positions 2 of the adjacent two square sieve plates 1 are coincided, and the adjacent two square sieve plates 1 are fixedly connected by the bolt passing through the through hole 21 and the nut.
[0038] Embodiment 2
[0039] A screen for improving the proportion of fine particle grade ore, the screen is composed of 18 square sieve plates 1 with a sieve size of 12x18mm, 11 square sieve plates 1 with a sieve size of 10x16mm, and 8 square sieve plates 1 with a sieve size of 8x16mm, which are spliced into 7 rows and 5 columns, and each column along the ore flow direction has a square sieve plate 1 with a sieve size of 12x18mm, a square sieve plate 1 with a sieve size of 10x16mm, and a square sieve plate 1 with a sieve size of 8x16mm.
[0040] Due to the addition of 10*16 mm and 8*16 mm screen holes in the screen, part of the 11-12 mm particle size ore cannot be smoothly screened from the screen, so that the proportion of the screened ore smaller than 7 mm is greatly improved, and the generation efficiency is improved.
[0041] The length of each square screen plate 1 of the embodiment is 1220 mm, the width is 300 mm, and the thickness is 40 mm.
[0042] In order to facilitate the installation and replacement of screen plates with different screen holes to achieve a suitable proportion of fine particle grade ore, the square screen plate 1 of the embodiment is detachably connected, and the detachable connection mode can adopt a clamping groove and clamping block mode.
[0043] Preferably, the square screen plate 1 is provided with a preset position 2 around the periphery, one side of the preset position 2 is provided with a protruding clamping block 22, and the other side is provided with a clamping groove 23 matched with the clamping block 22, and the adjacent two square screen plates 1 are connected through buckling.
[0044] Embodiment 3
[0045] A vibrating screen for improving the proportion of fine particle grade ore, comprising a box body 3 and a base 4; the base 4 is provided with a vibrating motor 5, and the vibrating motor 5 is connected with the bottom of the box body 3; the top of the box body 3 is communicated with a feeding pipe 6;
[0046] The box body 3 is provided with a first screen 8 installed obliquely, and the first screen 8 is composed of 18 square screen plates 1 with a screen hole size of 12*18 mm, 11 square screen plates 1 with a screen hole size of 10*16 mm, and 8 square screen plates 1 with a screen hole size of 8*16 mm, which are arranged in 7 rows and 5 columns, and each column along the ore flow direction is provided with square screen plates 1 with a screen hole size of 12*18 mm, 10*16 mm and 8*16 mm.
[0047] The side of the box body 3 is provided with a first discharge port 81 connected with the bottom end of the first screen 8.
[0048] The ore enters the first screen 8 in the vibrating screen from the feeding pipe 6, part of the 11-12 mm particle size ore is smoothly screened from the 12*18 mm screen hole of the screen, and due to the existence of the 10*16 mm and 8*16 mm screen holes, part of the 11-12 mm particle size ore cannot be screened from the first screen 8, and is discharged from the first discharge port 81 connected with the bottom end of the first screen 8.
[0049] The embodiment further comprises a second screen 7 above the first screen 8 and parallel to the first screen 8 for coarse screening of the ore, the screen hole of the second screen 7 is 20*30 mm, and the side of the box body 3 is provided with a second discharge port 71 connected with the bottom end of the second screen 7.
[0050] Due to a large amount of ore directly entering the second screen 7 during discharging, the second screen 7 is subjected to a large impact, and the second screen 7 can be damaged in a long-term use process. The second screen 7 cannot effectively coarsely screen the material, so the ore larger than the screen hole of the second screen 7 falls to the first screen 8 through the damaged part and is discharged through the first discharge port 81. In the ore recovered by the first discharge port 81, the ore of a larger particle size is mixed in the ore of a smaller particle size, the ore in different particle size ranges is mixed, and a large amount of ore larger than the screen hole of the second screen 7 falls to the first screen 8 through the damaged part, so the impact on the first screen 8 is also large, the first screen 8 is also more likely to be damaged, the service life of the first screen 8 is affected, and thus the product produced by the vibrating screen is unqualified, the quality is reduced, and the production requirement is not met.
[0051] However, the first screen 8 and the second screen 7 are located inside the vibrating screen box body 3, and it is difficult to directly and quickly find the damage of the first screen 8 and the second screen 7,
[0052] In order to directly and quickly find whether the first screen 8 and the second screen 7 are damaged, the first damaged monitoring screen 9 and the second damaged monitoring screen 10 are also provided in the embodiment, the first damaged monitoring screen 9 is arranged between the first screen 8 and the second screen 7, the screen hole of the first damaged monitoring screen 9 can be IxJ mm, wherein I is slightly greater than or equal to 20 mm, and J is slightly greater than or equal to 30 mm, and the side surface of the box body 3 is provided with a third discharge port 91 connected with the bottom end of the damaged monitoring screen.
[0053] The second damaged monitoring screen 10 is arranged below the first screen 8, the screen hole of the second damaged monitoring screen 10 is LxM mm, wherein L is slightly greater than or equal to 12 mm, and M is slightly greater than or equal to 18 mm, and the side surface of the box body 3 is provided with a fourth discharge port 101 connected with the bottom end of the second damaged monitoring screen 10.
[0054] If it is observed that the ore flows out of the third discharge port 91, it is indicated that the second screen 7 is damaged, the screening can be stopped, the second screen 7 is taken out, and the square screen plate 1 at the damaged part is replaced;
[0055] If it is observed that the ore flows out of the fourth discharge port 101, it is indicated that the first screen 8 is damaged, the screening can be stopped, the first screen 8 is taken out, and the square screen plate 1 at the damaged part is replaced;
[0056] The first damaged monitoring screen of the embodiment is arranged in a staggered manner with the first screen 8 and the second screen 7, and the second damaged monitoring screen is arranged in a staggered manner with the first screen 8 and the second screen 7.
Claims
1. A screen mesh for increasing the proportion of fine grade ore, characterised in that: The screen is composed of multiple square screen plates with screen hole size A×B mm, screen hole size C×D mm and screen hole size E×F mm, wherein A>C>E and B>D>F; Each column along the direction perpendicular to the ore flow direction is provided with square screen plates with screen hole size A×B mm, screen hole size C×D mm and screen hole size E×F mm; The square screen plate is provided with a preset position around the periphery, and a plurality of through holes are formed in the preset position; the square screen plate is further provided with a plurality of bolts and a plurality of nuts which are used in cooperation with the through holes; The adjacent preset positions of the adjacent two square screen plates are overlapped, the through holes in the adjacent preset positions of the adjacent two square screen plates are overlapped, and the bolt is sequentially threaded through the through holes in the opposite positions of the adjacent two square screen plates and is threadedly connected with the nut.
2. The screen mesh for increasing the proportion of fine particle grade ore according to claim 1, characterized in that: The square screen plate is provided with a preset position around the periphery, and a plurality of through holes are formed in the preset position; the square screen plate is further provided with a plurality of bolts and a plurality of nuts which are used in cooperation with the through holes; 3. A vibrating screen for increasing the proportion of fine grade ore, characterized in that: The base is provided with a vibrating motor, and the vibrating motor is connected with the bottom of the box body; The box body is provided with an obliquely installed first screen, and the first screen is the screen according to any one of claims 1-2; The box body is provided with a first discharge port on the side surface, and the discharge port is connected with the bottom end of the first screen.
4. The vibrating screen of claim 3, wherein: The box body is further provided with a second screen which is parallel to the first screen and is arranged above the first screen, and the screen hole of the second screen is G×H mm, wherein G>A and H>B; the box body is provided with a second discharge port which is connected with the bottom end of the second screen.
5. The vibrating screen of claim 4, wherein: The box body is further provided with a first damage monitoring screen which is obliquely arranged and is arranged between the first screen and the second screen, and the screen hole of the first damage monitoring screen is I×J mm, wherein I is slightly greater than or equal to G, and J is slightly greater than or equal to H; the box body is provided with a third discharge port which is connected with the bottom end of the damage monitoring screen.
6. The vibrating screen of claim 5, wherein: The box body is further provided with a second damage monitoring screen which is obliquely arranged and is arranged below the first screen, and the screen hole of the second damage monitoring screen is L×M mm, wherein L is slightly greater than or equal to A, and M is slightly greater than or equal to B; the box body is provided with a fourth discharge port which is connected with the bottom end of the second damage monitoring screen.
7. The vibrating screen of claim 6, wherein: The first damage monitoring screen is arranged in a staggered manner with the first screen and the second screen.
8. The vibrating screen of claim 7, wherein: The second damage monitoring screen is arranged in a staggered manner with the first screen and the second screen.