Screen cloth quick-changing structure of ore screen

Abstract

The utility model discloses a screen quick-changing structure of an ore screen, and relates to the technical field of ore screening. The vibrating screen comprises a screen frame skeleton, a screen mesh, an arc-shaped pressing frame and an arc-shaped frame, the screen frame skeleton comprises annular frames distributed at equal intervals, ribs distributed in an annular array mode are fixed between every two adjacent annular frames, the screen mesh is jointly laid on the outer arc faces of every two adjacent ribs, and the arc-shaped frame is arranged on the screen mesh. Arc-shaped frames which are symmetrically distributed are fixed to the outer arc surfaces of every two adjacent ribs together, the two arc-shaped frames are close to the two ends of the ribs respectively, each arc-shaped frame comprises an arc rod and threaded supporting rods fixed to the two ends of the arc rod, and the two arc-shaped frames outside every two adjacent ribs are sleeved with an arc-shaped pressing frame together. By arranging the screen frame skeleton, the screen mesh, the arc-shaped pressing frame and the arc-shaped frame, the problems that time is consumed when the screen mesh is replaced, operation efficiency is affected, and a quick-change structure is lacked are solved; the problems that the load of the screen is large, the structural stability and strength need to be enhanced, and the screen needs a large number of fasteners to be installed are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ore screening, in particular to a screen mesh quick-change structure of an ore screen. Background Art

[0002] Ore screen is a kind of equipment used for sieving ore. Its basic principle is to use vibration, rolling and other methods to make the ore move on the screen surface, and separate it into different levels according to the size of the ore particles. For example, in the circular vibrating screen, the material moves in a circular motion on the screen surface through the cylindrical eccentric shaft exciter and the eccentric block to adjust the amplitude, so that the screen flow line is long, thereby achieving ore screening. It is suitable for coal preparation, mineral processing, building materials, electricity and chemical industries for product classification. Among them, the most commonly used ore screen is the drum-type circular vibrating screen, but it has the following disadvantages in actual use:

[0003] First, because the mass of the ore is usually large, the screen on the ore screen will be loaded with a large load for a long time after screening the ore for a long time, and it is easy to be damaged, so the screen needs to be replaced frequently. However, the ore screen is relatively large as a whole, and it takes a lot of time to replace the screen. There is a lack of corresponding quick-change structure, which affects the working efficiency;

[0004] Secondly, because the load of the screen is large, the strength and stability of the screen need to be strengthened, and the frequency of replacing the screen should be reduced as much as possible. Frequent replacement of the screen will increase production costs.

[0005] Finally, the screens all require a large number of fasteners to install, replacement is quite cumbersome, and the fasteners are easy to lose. Utility Model Content

[0006] The utility model aims to provide a quick-change structure for an ore screen, which solves the problems of time-consuming replacement of the screen, affecting work efficiency, lack of a quick-change structure, large load on the screen, need to strengthen the structural stability and strength, and the need for a large number of fasteners to install the screen by arranging a screen frame skeleton, a screen, an arc-shaped pressing frame, and an arc-shaped frame.

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] The utility model is a screen quick-change structure for an ore screen, comprising a screen frame skeleton, a screen, an arc-shaped pressing frame and an arc-shaped frame, wherein the screen frame skeleton comprises annular frames distributed at equal intervals, ribs distributed in an annular array are fixed between two adjacent annular frames, screens are commonly laid on the outer arc surfaces of the two adjacent ribs, and symmetrically distributed arc-shaped frames are also commonly fixed on the outer arc-shaped surfaces of the two adjacent ribs, the two arc-shaped frames are respectively close to the two ends of the ribs, the arc-shaped frame comprises an arc rod and threaded support rods fixed to the two ends of the arc rod, and the ends of the two threaded support rods away from the arc rod are respectively fixed to the outer arc surfaces of the two ribs, an arc-shaped pressing frame is commonly sleeved on the two arc-shaped frames outside the two adjacent ribs, and the inner arc surface of the arc-shaped pressing frame is in close contact with the outer surface of the screen.

[0009] Furthermore, the rib is an arc-shaped structure, the outer arc surface of the ring frame is flush with the outer arc surface of the rib, and the inner arc surface of the ring frame is flush with the inner arc surface of the rib.

[0010] Furthermore, the length of the screen is equal to the length of the arc-shaped pressing frame, the width of the screen is equal to the width of the arc-shaped pressing frame, and the length of the screen is greater than the length of the ribs.

[0011] Furthermore, equidistantly distributed spikes are fixed on the inner arc surfaces of the two long arms of the arc pressing frame, and rubber arc plates are fixed on the inner arc surfaces of the two short arms of the arc pressing frame, and the spikes and rubber arc plates respectively abut the long sides and short sides of the outer arc surface of the screen.

[0012] Furthermore, through holes are formed at the four corners of the arc-shaped pressing frame and are sleeved outside the threaded support rods. Nuts are threadedly connected to the threaded support rods outside the arc-shaped pressing frame, and the arc-shaped pressing frame is screwed and locked by the nuts.

[0013] Furthermore, equally spaced and arc-shaped reinforcing ribs are fixed between opposite surfaces of the two long arms of the arc-shaped pressing frame.

[0014] The utility model has the following beneficial effects:

[0015] The utility model solves the problems of time-consuming replacement of screens, affecting working efficiency and lacking a quick-change structure by arranging a screen frame skeleton, a screen, an arc-shaped pressing frame and an arc-shaped frame. The screen frame skeleton serves as the skeleton structure of the main body, and is connected by welding of ring frames and ribs to form a drum-type skeleton structure. The screen is laid on its outer arc surface, and is pressed by the arc-shaped pressing frame and then locked by nuts on the arc-shaped frame. When disassembling, it is only necessary to loosen the nuts, pull out the screen, replace it with a new one, and then press the arc-shaped pressing frame to the outside of the screen, and tighten the nuts to achieve quick replacement of the screen.

[0016] The utility model solves the problem that the load of the screen is large and the structural stability and strength need to be strengthened by arranging an arc-shaped pressing frame and an arc-shaped frame; the arc-shaped pressing frame cover is arranged outside the screen, and the long arm of the arc-shaped pressing frame is pressed against the long side of the screen by spikes, and the short arm of the arc-shaped pressing frame is pressed against the short side of the screen by a rubber arc plate, and cooperates to press the four sides of the screen to strengthen the structural stability, instead of only fixing with a few bolts. After locking in this way, the stability is higher, and secondly, the reinforcing ribs in the arc-shaped pressing frame can also support the screen, strengthen the structural strength of the screen, and will not be seriously deformed due to long-term pressure.

[0017] The utility model solves the problem that a large number of fasteners are required to install the screen by arranging an arc-shaped pressing frame and an arc-shaped frame; the arc-shaped pressing frame is used to press the screen, and the position of the arc-shaped pressing frame is limited by the arc-shaped frame to prevent it from falling off; the nut is also screwed on the threaded support rod to prevent it from falling off, and there is no need for too many fasteners to lock, and four nuts can complete the fixing of a piece of screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 It is a stereoscopic diagram of the assembly of a quick-change structure of a screen of an ore screen;

[0020] Figure 2 It is the connection diagram of the screen frame skeleton and the arc frame;

[0021] Figure 3 This is the installation diagram of the screen frame and the single-piece screen;

[0022] Figure 4 for Figure 3 A magnified view of the structure at A;

[0023] Figure 5 The structural diagram of the screen mesh being laid on the screen frame skeleton;

[0024] Figure 6 It is a structural diagram of the arc pressing frame;

[0025] Figure 7 This is a bottom view of the arc pressing frame.

[0026] Reference numerals:

[0027] 1. Screen frame skeleton; 101. Ring frame; 102. Ribs; 2. Screen mesh; 3. Arc pressing frame; 301. Reinforcement ribs; 302. Rubber arc plate; 303. Spikes; 4. Arc frame; 401. Arc rod; 402. Threaded support rod; 403. Nut. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1-7 As shown, the utility model is a screen mesh quick-change structure of an ore screen, comprising a screen frame skeleton 1, a screen mesh 2, an arc-shaped pressing frame 3 and an arc-shaped frame 4, the screen frame skeleton 1 comprises annular frames 101 distributed at equal intervals, ribs 102 distributed in an annular array are fixed between two adjacent annular frames 101, the outer arc surfaces of the two adjacent ribs 102 are both paved with screen mesh 2, and the outer arc-shaped frames 4 distributed symmetrically are also fixed together on the outer arc-shaped surfaces of the two adjacent ribs 102, the two arc-shaped frames 4 are respectively close to the two ends of the ribs 102, the arc-shaped frame 4 comprises an arc rod 401 and threaded support rods 402 fixed at both ends of the arc rod 401, and the ends of the two threaded support rods 402 away from the arc rod 401 are respectively fixed to the outer arc surfaces of the two ribs 102, the arc-shaped pressing frame 3 is commonly sleeved on the two arc-shaped frames 4 outside the two adjacent ribs 102, and the inner arc surface of the arc-shaped pressing frame 3 is in close contact with the outer surface of the screen mesh 2;

[0030] First, the length of the screen frame skeleton 1 is customized according to actual needs. At the minimum, two ring frames 101 are welded together with four ribs 102 to form a drum-type skeleton structure, and an arc frame 4 is fixed outside two adjacent ribs 102 to serve as a fixed carrier. The screen 2 is laid outside two adjacent ribs 102 to completely cover the gap between the ribs 102, and then the screen 2 is pressed by the arc pressing frame 3. Finally, the nut 403 on the arc frame 4 is screwed down to lock the arc pressing frame 3, thereby locking the screen 2 to prevent displacement.

[0031] The rib 102 is an arc-shaped structure, the outer arc surface of the ring frame 101 is flush with the outer arc surface of the rib 102, and the inner arc surface of the ring frame 101 is flush with the inner arc surface of the rib 102;

[0032] The arc-shaped structure of the rib 102 fits the shape of the ring frame 101 , making it more convenient to install the screen 2 .

[0033] The length of the screen 2 is equal to the length of the arc-shaped pressing frame 3, the width of the screen 2 is equal to the width of the arc-shaped pressing frame 3, and the length of the screen 2 is greater than the length of the rib 102;

[0034] The longer length design of the screen 2 and the arc-shaped pressing frame 3 can avoid the situation where a gap may exist at the installation location when the screen 2 is the same length as the ribs 102. The overlong screen 2 can cover the sides between adjacent ribs 102 and adjacent ring frames 101, and then cooperate with the arc-shaped pressing frame 3 to cover and press, and then lock with the nut 403.

[0035] The inner arc surfaces of the two long arms of the arc pressing frame 3 are fixed with spikes 303 distributed at equal distances, and the inner arc surfaces of the two short arms of the arc pressing frame 3 are fixed with rubber arc plates 302, and the spikes 303 and the rubber arc plates 302 respectively abut against the long side and short side of the outer arc surface of the screen 2;

[0036] The spikes 303 are used to pierce the sieve holes in the long side of the screen 2 to prevent the screen 2 from shifting. Similarly, the rubber arc plate 302 is used to increase the friction force at the end of the screen 2, and also to prevent the screen 2 from deforming and shifting due to force.

[0037] The four corners of the arc-shaped pressing frame 3 are all penetrated with through holes and are sleeved on the outside of the threaded support rod 402. The threaded support rod 402 outside the arc-shaped pressing frame 3 is threadedly connected with a nut 403, and the arc-shaped pressing frame 3 is screwed and locked by the nut 403;

[0038] After the screen 2 is covered on the rib 102, the screen 2 is pressed by the arc-shaped pressing frame 3, and then the nut 403 on the threaded support rod 402 is screwed down to gradually lock the arc-shaped pressing frame 3 until the screen 2 is locked and cannot be displaced, thus completing the fixation;

[0039] Between the opposite surfaces of the two long arms of the arc-shaped pressing frame 3, there are fixed equidistantly distributed arc-shaped reinforcing ribs 301, which increase the external structural support strength of the screen 2, reduce the possibility of deformation, and extend the service life.

[0040] The specific working principle of the utility model is as follows: first, the length of the screen frame skeleton 1 is customized according to actual needs, and the minimum is two ring frames 101 and four ribs 102 are welded and connected to form a drum-type skeleton structure. If it needs to be longer, the ring frames 101 and ribs 102 are added. Secondly, the arc frame 4 is fixed outside two adjacent ribs 102, and the screen 2 is laid outside two adjacent ribs 102 to completely cover the gap between the ribs 102. Subsequently, the screen 2 is pressed tightly by the arc pressing frame 3, and then the nut 403 on the threaded support rod 402 is screwed down to gradually lock the arc pressing frame 3 until the screen 2 is locked, thereby completing the installation of the screen 2. When disassembling, it is only necessary to loosen the nut 403, pull out the screen 2, replace it with a new screen 2, and then install it in the above manner.

[0041] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A quick-change screen structure for an ore screen, comprising a screen frame (1), a screen (2), an arc-shaped pressing frame (3) and an arc-shaped frame (4), characterized in that: The screen frame skeleton (1) comprises annular frames (101) distributed at equal intervals, ribs (102) distributed in an annular array are fixed between two adjacent annular frames (101), a screen (2) is laid on the outer arc surfaces of the two adjacent ribs (102), and symmetrically distributed arc frames (4) are also fixed on the outer arc surfaces of the two adjacent ribs (102), the two arc frames (4) are respectively close to the two ends of the ribs (102), the arc frames (4) comprise an arc rod (401) and threaded support rods (402) fixed to the two ends of the arc rod (401), and the ends of the two threaded support rods (402) away from the arc rod (401) are respectively fixed to the outer arc surfaces of the two ribs (102), and an arc pressing frame (3) is commonly sleeved on the two arc frames (4) outside the two adjacent ribs (102), and the inner arc surface of the arc pressing frame (3) is in close contact with the outer surface of the screen (2).

2. The quick-change screen structure of an ore screen according to claim 1, characterized in that: The rib (102) is an arc-shaped structure; the outer arc surface of the ring frame (101) is flush with the outer arc surface of the rib (102); and the inner arc surface of the ring frame (101) is flush with the inner arc surface of the rib (102).

3. The quick-change screen structure of an ore screen according to claim 1, characterized in that: The length of the screen (2) is equal to the length of the arc-shaped pressing frame (3), the width of the screen (2) is equal to the width of the arc-shaped pressing frame (3), and the length of the screen (2) is greater than the length of the rib (102).

4. The quick-change screen structure of an ore screen according to claim 1, characterized in that: Equidistantly distributed spikes (303) are fixed on the inner arc surfaces of the two long arms of the arc-shaped pressing frame (3), and rubber arc plates (302) are fixed on the inner arc surfaces of the two short arms of the arc-shaped pressing frame (3), and the spikes (303) and the rubber arc plates (302) respectively abut against the long sides and short sides of the outer arc surface of the screen (2).

5. The quick-change screen structure of an ore screen according to claim 1, characterized in that: Through holes are provided at the four corners of the arc-shaped pressing frame (3) and are sleeved outside the threaded support rod (402). Nuts (403) are threadedly connected to the threaded support rod (402) outside the arc-shaped pressing frame (3), and the arc-shaped pressing frame (3) is screwed and locked by the nuts (403).

6. The quick-change screen structure of an ore screen according to claim 1, characterized in that: Between the opposite surfaces of the two long arms of the arc-shaped pressing frame (3), there are fixed equidistantly distributed arc-shaped reinforcing ribs (301).

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