Anti-blocking screen structure suitable for ore classification

Abstract

The utility model relates to the technical field of screens, in particular to an anti-blocking screen structure suitable for ore grading, which comprises a screen body and a screen frame used for mounting the screen body, buffer plates are arranged on two sides of the top of the screen frame, and damping spring shock absorbers are fixedly mounted between the buffer plates and the screen frame. The buffering plates are fixedly connected with sliding rods in sliding connection with the screen frame, a buffering frame is arranged between the buffering plates, the buffering frame is fixedly connected with sliding rods in sliding connection with the corresponding buffering plates, the two sides of the buffering frame are fixedly connected with a plurality of U-shaped bases at equal intervals, and material pushing plates are rotationally installed on the U-shaped bases. According to the utility model, through the reciprocating buffer frame, the problem that the service life of the screen body is shortened due to direct impact type contact between ores and the screen body when the ores fall can be prevented, and the plurality of material pushing plates can be driven to gradually push the ores in the middle of the screen body to two sides, so that the screening area is increased, and the screening efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screen technology field especially suitable for ore grading's anti - jamming type screen structure. BACKGROUND

[0002] After ore exploitation needs to pass the crushing processing, subsequently carries out screening to the crushed ore through the vibrating screen to separate out the small granular ore after refining.

[0003] Such as the prior art discloses no. The screen in the coal mine screening machine is used, the screen structure is combined with electronic scale, although the weight of the mine falling to the screen can be counted, the problem that the filter screen is damaged due to the excessive load of the falling ore is prevented, but the concentrated falling ore cannot be buffered and slowed down, the area of the screen directly below the discharge port is easy to be impacted by a large force, and the screen is damaged. In addition, the ore is accumulated in the middle of the screen, so that the screening area of the screen is small, and the screening efficiency is reduced.

[0004] In view of the above technical defects, a solution is proposed. UTILITY MODEL CONTENT

[0005] The utility model discloses a kind of anti-jamming type screen structures suitable for ore grading, to solve the technical defects proposed above, and the buffering frame of reciprocating motion, not only can prevent the ore falling, directly with the screen body is impacted and contacted to produce the problem of reducing the service life of screen body, still can drive multiple pusher plate, gradually to the ore in the middle of screen body is pushed to both sides, to increase screening area, and then improve screening efficiency.

[0006] The following technical solutions are realized:

[0007] A kind of anti-jamming type screen structures suitable for ore grading, including screen body, and the screen frame for installing screen body, the top of the screen frame Both sides are provided with buffer plate, and damping spring shock absorber is fixedly installed between buffer plate and screen frame, the buffer plate is fixedly connected with the sliding rod of sliding connection with screen frame, buffering frame is arranged between the buffer plate, and the sliding rod of sliding connection with corresponding buffer plate is fixedly connected on buffering frame, the both sides of buffering frame are equally spaced and fixedly connected with multiple U-shaped seats, and pusher plate is rotatably installed on U-shaped seat.

[0008] Preferably, the top of the screen frame is fixedly connected with a limiting fixed ring, the bottom of the screen frame is bolted with a limiting movable ring, and the screen body is installed between the limiting fixed ring and the limiting movable ring.

[0009] Preferably, the screen body has long strip-shaped screen holes, and the screen holes have an isosceles trapezoidal structure with a small upper opening and a large lower opening.

[0010] Preferably, the plurality of U-shaped seats are arranged in a mirror image relative to the middle part of the buffer frame, the pushing plate is symmetrically connected with a sliding block at both sides, and the inner side wall of the U-shaped seat is provided with a sliding groove connected with the corresponding sliding block.

[0011] Preferably, the bottom of the buffer plate on one side is fixedly connected with a fixed plate, the fixed plate is rotatably connected with a reciprocating screw rod, the buffer frame is fixedly connected with a driving block in threaded connection with the reciprocating screw rod, and the fixed plate is bolted with a motor for driving the reciprocating screw rod to rotate.

[0012] Preferably, the end of the reciprocating screw rod is rotatably connected with a movable block, the movable block is slidably connected with the buffer frame through a T-shaped block, and the driving block is fixedly connected with an elastic protection pipe between the fixed plate and the movable block and outside the reciprocating screw rod.

[0013] The beneficial effects of the present application are as follows:

[0014] The buffer frame is connected with the buffer frame through the damping spring shock absorber at the top of the screen body, so that the problem of large deformation or damage of the screen body caused by the concentrated impact of too many ores on the screen body during screening of the ores can be avoided; in addition, the reciprocating movement of the buffer frame is driven by the rotating reciprocating screw rod, and the ores in the middle part of the screen body are gradually pushed to both sides by the pushing plate on the U-shaped seat, so that the ores are uniformly distributed, the screening area is increased, and the screening efficiency is improved; the screen hole in the form of a ladder can effectively prevent the ore particles from being stuck in the screen hole, thereby reducing the problem of low screening efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below with reference to the drawings;

[0016] Figure 1 is a structural schematic view of the present application;

[0017] Figure 2 is an exploded view of the present application;

[0018] Figure 3 is a structural schematic view of the screen frame of the present application;

[0019] Figure 4 is a structural schematic view of the buffer frame of the present application;

[0020] Figure 5 is a structural schematic view of the reciprocating screw rod of the present application;

[0021] Figure 6It is the structural schematic diagram of the U-shaped seat of the utility model;

[0022] Figure 7 It is the structural schematic diagram of the screen body of the utility model.

[0023] Legend:

[0024] 1, screen body; 11, screen frame; 12, buffer plate; 13, damping spring shock absorber; 14, slide bar; 15, limit fixed ring; 16, limit movable ring; 17, fixed plate; 18, reciprocating screw; 19, motor; 110, movable block; 111, telescopic protection tube;

[0025] 2, buffer frame; 21, sliding rod; 22, U-shaped seat; 23, pushing plate; 24, sliding block; 25, sliding slot; 26, driving block. Specific embodiments

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] Embodiment one: please refer to Figure 1 - Figure 7 As shown in the figure, in order to solve the problem that the existing technology cannot buffer and slow down the concentrated falling ore, resulting in that the area where the screen is located directly below the discharge port is easily impacted by a large force and damaged, the following scheme can be used to solve the problem.

[0028] The anti-blocking screen structure suitable for ore classification in the embodiment comprises a screen body 1, a screen frame 11 for installing the screen body 1, buffer plates 12 arranged on both sides of the top of the screen frame 11, damping spring shock absorbers 13 fixedly installed between the buffer plates 12 and the screen frame 11, slide rods 14 fixedly connected to the buffer plates 12 and slidingly connected to the screen frame 11, and a buffer frame 2 arranged between the buffer plates 12.

[0029] When the ore falls, the ore first contacts the buffer frame 2, which promotes the buffer frame 2 to carry the buffer plates 12 on both sides to move downward. At this time, the damping spring shock absorbers 13 below the buffer plates 12 buffer the downward speed of the buffer plates 12, thereby reducing the falling speed of the concentrated falling ore, further reducing the impact force of the ore on the screen body 1, and prolonging the service life of the screen body 1. The buffer frame 2 is fixedly connected to the sliding rods 21 slidingly connected to the corresponding buffer plates 12.

[0030] The connection of the buffer frame 2 and the two side buffer plates 12 is realized, while avoiding interference with the horizontal reciprocating movement of the buffer frame 2, improving the receiving area of the falling ore, and a plurality of U-shaped seats 22 are fixedly connected at equal intervals on the two sides of the buffer frame 2, and a pushing plate 23 is rotatably installed on the U-shaped seat 22, which moves the ore on the screen body 1 to increase the screening area and thus improve the screening efficiency.

[0031] The top of the screen frame 11 is fixedly connected with a limiting fixed ring 15, and the bottom of the screen frame 11 is bolted with a limiting movable ring 16, and the screen body 1 is installed between the limiting fixed ring 15 and the limiting movable ring 16, so as to ensure the stable installation of the screen body 1, and facilitate the replacement of the damaged or different size screen body 1, thereby achieving the effect of ore grading and screening.

[0032] The screen hole of the screen body 1 is an elongated hole, and the cross section of the screen hole is an isosceles trapezoidal structure with a small upper opening and a large lower opening, which can further avoid the problem of ore particles being stuck in the screen hole and causing screen hole blockage, wherein the screen hole size of the screen body 1 is 1.0 mm, and the screen hole size is as follows: the screen hole width a is 0.95-1.05 mm, the screen wire width b is 0.10-0.20 mm, the screen wire length c is 6.5 mm-7.5 mm, and the included angle d of the isosceles trapezoidal two sides of the screen hole cross section is 30-34 degrees;

[0033] including but not limited to the screen hole size of the screen body 1 is 0.5 mm, a is 0.495-0.505 mm, b is 0.30-0.50 mm, c is 3.5-5.0 mm, and d is 28-30 degrees;

[0034] including but not limited to the screen hole size of the screen body 1 is 0.43 mm, a is 0.425-0.435 mm, b is 0.06 mm-0.10 mm, c is 3.5-6.5 mm, and d is 26-32 degrees;

[0035] including but not limited to the screen hole size of the screen body 1 is 0.3 mm, a is 0.295-0.305 mm, b is 0.25-0.60 mm, c is 3.5-6.5 mm, and d is 26-32 degrees;

[0036] including but not limited to the screen hole size of the screen body 1 is 0.18 mm, a is 0.175-0.185 mm, b is 0.18-0.22 mm, c is 2.16-5.4 mm, and d is 24-30 degrees;

[0037] including but not limited to the screen hole size of the screen body 1 is 0.15 mm, a is 0.145-0.155 mm, b is 0.18-0.22 mm, c is 2.16-5.4 mm, and d is 24-30 degrees;

[0038] including but not limited to the screen body 1 of 0.125 millimeter, a is 0.12-0.13 millimeter, b is 0.155-0.225 millimeter, c is 2.0-4.4 millimeter, d is 24-30 degrees;

[0039] including but not limited to the screen body 1 of 0.1 millimeter, a is 0.095-0.105 millimeter, b is 0.14-0.20 millimeter, c is 2.16-5.4 millimeter, d is 24-30 degrees;

[0040] including but not limited to the screen body 1 of 0.074 millimeter, a is 0.070-0.078 millimeter, b is 0.08-0.18 millimeter, c is 1.8-2.6 millimeter, d is 18-24 degrees;

[0041] including but not limited to the screen body 1 of 0.063 millimeter, a is 0.060-0.066 millimeter, b is 0.10-0.18 millimeter, c is 1.0-2.6 millimeter, d is 18-22 degrees;

[0042] including but not limited to the screen body 1 of 0.053 millimeter, a is 0.050-0.056 millimeter, b is 0.06-0.12 millimeter, c is 0.9-1.9 millimeter, d is 16-22 degrees;

[0043] including but not limited to the screen body 1 of 0.043 millimeter, a is 0.040-0.046 millimeter, b is 0.1-0.14 millimeter, c is 1.2-1.5 millimeter, d is 18-20 degrees.

[0044] The plurality of U-shaped seats 22 are mirror image distributed relative to the middle part of the buffer frame 2, so that when the U-shaped seat 22 moves to one side, the pushing plate 23 in the middle part of the U-shaped seat 22 located on the advancing side is limited to rotate under the blocking of the inner wall of the U-shaped seat 22, thereby pushing the ore in the middle part of the screen body 1 to move, and the pushing plate 23 in the middle part of the U-shaped seat 22 located on the retreating side is deflected because the U-shaped seat 22 cannot limit the rotation of the pushing plate 23, thereby making it difficult to drive the ore to move, avoiding pushing the moved ore;

[0045] When the U-shaped seat 22 moves reversely, the pushing plate 23 limited to rotate is deflected, and the deflected pushing plate 23 cannot rotate, thereby pushing the ore in the middle part of the screen body 1 to the other side, and repeating the reciprocating movement of the buffer frame 2 carrying the U-shaped seat 22 to gradually push the ore in the middle part to both sides, so as to increase the screening area, and the two sides of the pushing plate 23 are symmetrically connected with the sliding blocks 24, and the inner side wall of the U-shaped seat 22 is provided with the sliding grooves 25 slidably connected with the corresponding sliding blocks 24, avoiding interference with the descending movement of the buffer frame 2.

[0046] The bottom of the one side buffer plate 12 is fixedly connected with a fixed plate 17, and the reciprocating screw rod 18 is rotatably connected to the fixed plate 17; the buffer frame 2 is fixedly connected with a driving block 26 which is threadedly connected with the reciprocating screw rod 18; the fixed plate 17 is bolted with a motor 19 for driving the reciprocating screw rod 18 to rotate; the reciprocating screw rod 18 is driven to rotate by the motor 19, and the buffer frame 2 is driven to reciprocate by the driving block 26.

[0047] The end of the reciprocating screw rod 18 is rotatably connected with a movable block 110 which is slidably connected with the buffer frame 2 through a T-shaped block, so as to realize stable installation of the reciprocating screw rod 18 and avoid interference with the movement of the buffer frame 2; the two sides of the driving block 26 are fixedly connected with telescopic protection pipes 111 between the fixed plate 17 and the movable block 110 and outside the reciprocating screw rod 18, so as to avoid contact of the fine ore particles with the reciprocating screw rod 18 and increase the abrasion of the reciprocating screw rod 18, thereby reducing the service life.

[0048] The working process and principle of the utility model are as follows:

[0049] In the use process, when the falling ore particles are screened, the motor 19 drives the reciprocating screw rod 18 to rotate, and the reciprocating screw rod 18 drives the buffer frame 2 to reciprocate through the driving block 26; when the ore particles fall in a concentrated manner, the ore particles first contact the reciprocating buffer frame 2, so as to drive the buffer frame 2 to move downward with the two sides of the buffer plate 12; at this time, the falling speed of the buffer plate 12 is buffered by the damping spring shock absorber 13 below the buffer plate 12, so as to reduce the falling speed of the concentrated falling ore and further reduce the impact force of the ore on the screen body 1;

[0050] When the buffer frame 2 carries the U-shaped seat 22 to move to one side, the pushing plate 23 in the middle of the U-shaped seat 22 on the advancing side is limited to rotate under the block of the inner wall of the U-shaped seat 22, and pushes the ore in the middle of the screen body 1 to move; the pushing plate 23 in the middle of the U-shaped seat 22 on the retreating side is deflected and cannot drive the ore to move, so as to avoid pushing the moved ore back;

[0051] When the buffer frame 2 carries the U-shaped seat 22 to move reversely, the deflected pushing plate 23 cannot rotate, and further pushes the ore in the middle of the screen body 1 to the other side; through the reciprocating movement of the buffer frame 2 carrying the U-shaped seat 22, the ore in the middle is gradually pushed to the two sides, so as to increase the screening area and improve the screening efficiency;

[0052] When the screen body 1 of different size screen mesh is replaced, the limiting movable ring 16 at the bottom of the screen frame 11 is removed, the screen body 1 is disassembled, the screen body 1 is replaced and the limiting movable ring 16 is installed, and the purpose of ore grading and screening is achieved.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A clogging-preventing screen structure suitable for ore classification, comprising a screen body (1) and a screen frame (11) for mounting the screen body (1), characterized in that, The top of the screen frame (11) is provided with a buffer plate (12) on both sides, and a damping spring shock absorber (13) is fixedly installed between the buffer plate (12) and the screen frame (11), the buffer plate (12) is fixedly connected with a sliding rod (14) slidingly connected with the screen frame (11), the buffer plate (12) is provided with a buffer frame (2), and the buffer frame (2) is fixedly connected with a sliding rod (21) slidingly connected with the corresponding buffer plate (12), the buffer frame (2) is fixedly connected with a plurality of U-shaped seats (22) at equal intervals on both sides, and a pushing plate (23) is rotatably installed on the U-shaped seat (22).

2. A clog resistant screen structure suitable for use in ore classification according to claim 1, wherein, The top of the screen frame (11) is provided with a buffer plate (12) on both sides, and a damping spring shock absorber (13) is fixedly installed between the buffer plate (12) and the screen frame (11), the buffer plate (12) is fixedly connected with a sliding rod (14) slidingly connected with the screen frame (11), the buffer plate (12) is provided with a buffer frame (2), and the buffer frame (2) is fixedly connected with a sliding rod (21) slidingly connected with the corresponding buffer plate (12), the buffer frame (2) is fixedly connected with a plurality of U-shaped seats (22) at equal intervals on both sides, and a pushing plate (23) is rotatably installed on the U-shaped seat (22).

3. A clog resistant screen structure suitable for use in ore classification according to claim 2, wherein, The screen frame (11) is fixedly connected with a limiting fixed ring (15) at the top, and the screen frame (11) is bolted with a limiting movable ring (16) at the bottom.

4. A clog resistant screen structure suitable for use in ore classification according to claim 1, wherein, The screen hole of the screen body (1) is a long strip-shaped screen hole, and the screen hole cross section is an isosceles trapezoidal structure with small upper opening and large lower opening.

5. A clog resistant screen structure suitable for use in ore classification according to claim 1, wherein, A plurality of U-shaped seats (22) are mirror image distributed relative to the middle part of the buffer frame (2), the two sides of the pushing plate (23) are symmetrically rotatably connected with sliding blocks (24), and the inner side wall of the U-shaped seat (22) is provided with a sliding groove (25) slidingly connected with the corresponding sliding block (24).

6. A clog resistant screen structure suitable for use in ore classification according to claim 5, wherein, The bottom of the buffer plate (12) on one side is fixedly connected with a fixed plate (17), and the fixed plate (17) is rotatably connected with a reciprocating screw rod (18), the buffer frame (2) is fixedly connected with a driving block (26) threadedly connected with the reciprocating screw rod (18), and the fixed plate (17) is bolted with a motor (19) for driving the reciprocating screw rod (18) to rotate. The end of the reciprocating screw rod (18) is rotatably connected with a movable block (110), and the movable block (110) is slidingly connected with the buffer frame (2) through a T-shaped block, the driving block (26) is fixedly connected with a telescopic protection tube (111) between the fixed plate (17) and the movable block (110) and located outside the reciprocating screw rod (18).

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