CN209866602U

CN209866602U - Oscillating sand screening machine

Info

Publication number: CN209866602U
Application number: CN201822277519.0U
Authority: CN
Inventors: 胡建修
Original assignee: Shanghai Lianding Concrete Products Co Ltd
Current assignee: Shanghai lianding New Material Technology Co.,Ltd.
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-12-31
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses an oscillating sand sieving machine, which relates to the technical field of concrete sand sieving equipment and solves the problems of sand blocking and insufficient sand sieving, comprising a sieve box, wherein the top of the sieve box is fixed with a first sieve, the inside of the sieve box is provided with a second sieve in an oscillating way, and one side of the second sieve facing the first sieve is fixed with a plurality of impact bars; a support bar is fixed on the inner wall of one side of the screen box, a sliding groove is formed in one side, facing the second screen, of the support bar, a sliding block is arranged in the sliding groove in a lifting mode, and rotating shafts are rotatably connected to the two sides of the second screen and the inner wall of the screen box; the top end and the bottom end of the screen box are respectively provided with a support, a conveyor belt is rotatably arranged on the supports, a traction mechanism is fixed on the supports, and a discharge hopper is fixed at the bottom of the screen box; an eccentric block is fixed on one side of the screen box, and a driving motor is fixed on one side of the eccentric block. The utility model discloses avoided the grit to plug up the mesh on first screen cloth and second screen cloth for the sieve stone is more abundant with screening.

Description

Oscillating sand screening machine

Technical Field

The utility model belongs to the technical field of concrete sieve sand equipment technique and specifically relates to a swing type sand sieving machine is related to.

Background

The sand screening machine is used for screening various finished sand aggregates, and the principle of the sand screening machine is that a motor drives a triangular belt and an eccentric block of a vibration exciter to rotate at a high speed, the eccentric block running at a high speed generates great centrifugal force to excite a screen box to generate circular motion with certain amplitude, so that sand on a screen mesh is subjected to impact transmitted by the screen box to generate continuous throwing motion, sand particles smaller than screen meshes pass through and fall below the screen mesh in the process of collision of the sand with the screen mesh, and multiple layers of screen meshes are arranged inside the sand screening machine, so that multi-stage screening of the sand is realized.

In order to solve the problems, the Chinese patent with the patent publication number of CN2266465Y provides a sand screening machine, which comprises a screen sheet and a power part, wherein the power part is connected with a transmission wheel through a triangular belt, a crankshaft is connected with the transmission wheel and is connected with a telescopic sleeve through a bearing, a pull rod in the telescopic sleeve is connected with the screen sheet, the screen sheet is hung on a steel frame through a rocker arm, and a sand collecting dustpan which inclines towards one direction is arranged below the screen sheet.

The above prior art solutions have the following drawbacks: at the in-process of screening grit, because partial sieve stone can block in the sieve mesh of sieve piece, only lean on the grit that the vibration was hardly blocked in with the sieve piece to derive, the sieve piece of plugging up still can influence subsequent grit screening work, makes the grit screening insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a but the screen cloth wobbling, a swing type sand sieving machine that grit card shell rate is low.

The utility model discloses a can realize through following technical scheme:

a swing type sand sieving machine comprises a sieve box, wherein a first sieve mesh is fixed at the top of the sieve box, a second sieve mesh is arranged in the sieve box in a swing mode, and a plurality of impact rods are fixed on one side, facing the first sieve mesh, of the second sieve mesh;

a support strip is fixed on the inner wall of one side of the screen box, a sliding groove is formed in one side, facing the second screen, of the support strip, a sliding block is arranged in the sliding groove in a lifting mode, the sliding block is hinged to one end of the second screen, a first connecting rod is connected to one end of the sliding block in a hinged mode, and two sides of the second screen are rotatably connected with the inner wall of the screen box through rotating shafts used for supporting the second screen;

the top end and the bottom end of the screen box are respectively provided with a support, a conveyor belt is rotatably arranged on the supports, a traction mechanism for driving the conveyor belt to rotate is fixed on the supports, and a discharge hopper communicated with the inside of the screen box is fixed at the bottom of the screen box;

an eccentric block is fixed on one side of the sieve box, and a driving motor for driving the eccentric block to rotate is fixed on one side, far away from the sieve box, of the eccentric block.

By adopting the technical scheme, the sand and stone to be screened are added into the screen box by utilizing the conveyor belt at the top end of the screen box, the driving motor drives the eccentric block to rotate, the eccentric block drives the screen box to perform irregular circular motion, thereby driving the sand and stone on the surface of the first screen cloth to continuously bounce, the sand and stone with smaller diameter fall onto the second screen cloth to be screened through the first screen cloth, meanwhile, the slide block moves up and down in the sliding chute, the slide block drives the first connecting rod to move up and down, the first connecting rod drives the second screen cloth to swing by taking the rotating shaft as the axis, so that the sand and stone continuously swing back and forth at the two ends of the second screen cloth, meanwhile, the impact rod intermittently impacts the first screen cloth, the sand and stone blocked on the first screen cloth are impacted, the sand and stone which finally meets the requirements are collected into the discharging hopper, and fall onto the conveyor belt at the bottom end of, thereby transporting the screened and qualified sand to the designated position.

The utility model discloses a slider constantly goes up and down in the spout, drives the grit and constantly makes a round trip to roll when vibrating on the second screen cloth, and the impact rod constantly strikes first screen cloth simultaneously for the grit constantly beats at first screen cloth and second screen cloth surface, thereby has avoided the grit to plug up the mesh on first screen cloth and second screen cloth, makes the sieve stone sieve screen ground more abundant.

Further setting the following steps: the sliding groove internal rotation is provided with the lead screw, slider thread bush is located lead screw week side, sieve case outer wall is fixed with the drive the lead screw pivoted motor power.

Through adopting above-mentioned technical scheme, power motor drive lead screw rotates, drives the slider and goes up and down the activity in the sliding groove to drive the reciprocal swing of screen cloth.

Further setting the following steps: the sieve case in one side that the support bar located is fixed with two guide bars, the side cover all is equipped with the guide block in the guide bar, the guide block with the articulated second connecting rod that is connected with of second screen cloth.

Through adopting above-mentioned technical scheme, the second screen cloth swing in-process utilizes guide block and second connecting rod to go up and down at the guide bar, can carry on spacingly to the second screen cloth, can disperse the holding power of slider to the second screen cloth simultaneously.

Further setting the following steps: traction mechanism includes two gyro wheels, two drag chains and a traction motor, the support both ends all are fixed with the gyro wheel, two the common tensioning cover in gyro wheel week side is equipped with two the drag chain, the conveyer belt with the coaxial fixed connection of drag chain, support one side is fixed with one of them of drive gyro wheel pivoted traction motor.

Through adopting above-mentioned technical scheme, traction motor drive gyro wheel rotates, drives drag chain, conveyer belt and another gyro wheel and rotates, realizes that the conveying transports the function of grit.

Further setting the following steps: the sieve incasement portion is in keeping away from one side of support bar is fixed with the fixed plate, the fixed plate with fixedly connected with spring between the second screen cloth.

Through adopting above-mentioned technical scheme, the second screen cloth swing in-process, the spring can play the effect that the second screen cloth of restriction supported the second screen cloth.

Further setting the following steps: and blocking edges are fixed at the edge of one side of the second screen where the impact rod is located.

Through adopting above-mentioned technical scheme, at second screen cloth swing and vibration in-process, keep off along can avoiding the grit to run out from the border department of second screen cloth.

Further setting the following steps: the sieve case is kept away from one side of eccentric block has seted up the viewing aperture, sieve case lateral wall hinged joint is connected with and is used for sealing the chamber door of viewing aperture.

Through adopting above-mentioned technical scheme, the staff of being convenient for of viewing aperture overhauls the sieve case, and the screening grit in-process utilizes the chamber door to seal the viewing aperture, avoids the grit to run out from the viewing aperture.

Further setting the following steps: one side of the box door, which is far away from the screen box, is fixed with a hook, the side wall of the screen box is hinged with a pressing rod, and one end of the pressing rod, which is close to the screen box, is hinged with a hanging ring matched with the hook in a hasp way.

Through adopting above-mentioned technical scheme, with link and couple hasp cooperation, recycle the compression bar and compress tightly the link to the realization is locked the purpose at sieve case lateral wall with the chamber door.

To sum up, the utility model discloses a motor power and lead screw combined action drive slider and first connecting rod lift activity to drive the reciprocal lift of second screen cloth at the sieve incasement, make the grit constantly make a round trip to roll at the both ends of second screen cloth, first screen cloth is put into to the striker rod intermittent type nature simultaneously, make the sieve stone constantly beat on first screen cloth and second screen cloth, avoided the grit to pile up, the buried pressure, thereby avoided the grit card the condition in the mesh, make the grit sieve to sieve more abundant, do not influence subsequent grit screening work.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a swing type sand sieving machine I;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of a swing type sand sieving machine II;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is an enlarged view of a portion C of FIG. 4;

FIG. 6 is a schematic view of the connection of the guide rod, the guide block and the second connecting rod of the present invention;

FIG. 7 is an enlarged view of portion E of FIG. 1;

fig. 8 is a partially enlarged view of portion F in fig. 3.

Reference numerals: 1. a screen box; 2. a first screen; 3. a second screen; 4. a striker bar; 5. a supporting strip; 6. a sliding groove; 7. a slider; 8. a first link; 9. a rotating shaft; 10. a support; 11. a conveyor belt; 12. a discharge hopper; 13. an eccentric block; 14. a drive motor; 15. a screw rod; 16. a power motor; 17. a guide bar; 18. a guide block; 19. a second link; 20. a roller; 21. a drag chain; 22. a traction motor; 23. a fixing plate; 24. a spring; 25. blocking edges; 26. a viewing port; 27. a box door; 28. hooking; 29. a hold down bar; 30. and (5) hanging a ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an oscillating sand sieving machine, including sieve case 1, sieve case 1 is cuboid form and the top of sieve case 1 is open structure, and the whole relative level of sieve case 1 is degree slope setting. Referring to fig. 2, an eccentric block 13 is fixed on the outer wall of one side of the screen box 1, a driving motor 14 for driving the eccentric block 13 to rotate is fixed on one side of the eccentric block 13 away from the screen box 1, and the driving motor 14 drives the eccentric block 13 to rotate at a high speed, so that the eccentric block 13 drives the screen box 1 to vibrate.

Referring to fig. 3 and 4, a first screen 2 is fixed to the top end of the screen box 1, and the first screen 2 is disposed parallel to the bottom surface of the screen box 1. The inside swing of sieve case 1 is provided with second screen cloth 3, and first screen cloth 2, the mesh number of second screen cloth 3 is all different and mesh diameter decreases progressively in proper order. When the second screen 3 is stationary, the second screen 3 is disposed parallel to the first screen 2.

Referring to fig. 5, a plurality of striker bars 4 are fixed to one end of the second screen 3 in the width direction, which faces the side where the first screen 2 is located, and the plurality of striker bars 4 are arranged in the vertical direction. When the swing in-process of second screen cloth 3, striking rod 4 strikes first screen cloth 2 intermittently, avoids the grit card on the first screen cloth 2 in the mesh. The second screen 3 is fixed with retaining edges 25 at the four edges of the side where the impact rod 4 is located. The retaining edge 25 is arranged perpendicular to the second screen 3. The ledge 25 prevents sand from escaping from the edge of the second screen 3 during oscillation and vibration of the second screen 3.

The inside support bar 5 that is fixed with in one side lateral wall that is close to the impact rod 4 of sieve case 1, support bar 5 are the cuboid form, and support bar 5 is on a parallel with the setting of impact rod 4, and the one end that support bar 5 is close to first screen cloth 2 and the one end of keeping away from first screen cloth 2 all with sieve case 1 inner wall fixed connection. Support bar 5 offers sliding groove 6 towards one side of second screen cloth 3 along length direction, and the lift is provided with slider 7 in sliding groove 6, and the outer wall of slider 7 is contradicted with sliding groove 6's inner wall and is connected. A first connecting rod 8 is hinged between one end of the second screen 3 close to the impact rod 4 and the sliding block 7. Referring to fig. 4, the inside of the screen box 1 is fixed with rotation shafts 9 on the support bars 5 and the two adjacent inner walls of the first screen 2, the rotation shafts 9 are located in the middle of the inner walls of the screen box 1, and one ends of the two rotation shafts 9 far away from the inner walls of the screen box 1 are respectively fixedly connected with the two sides of the second screen 3. The rotating shaft 9 is used to support the second screen 3. The slider 7 drives the first connecting rod 8 to reciprocate in the process of lifting and moving in the sliding groove 6, and the connecting rod simultaneously drives the second screen 3 to reciprocate by taking the rotating shaft 9 as an axis.

Referring to fig. 5, a screw rod 15 is rotatably disposed inside the sliding groove 6 along the length direction of the support bar 5, the screw rod 15 is disposed parallel to the support bar 5, and the slider 7 is threadedly sleeved on the periphery of the screw rod 15. Referring to fig. 4, a power motor 16 for driving the screw rod 15 to rotate is fixed on one side of the screen box 1 away from the first screen 2, and a rotating shaft of the power motor 16 penetrates through the side wall of the screen box 1 and is coaxially and fixedly connected with the screw rod 15 through a coupler. The power motor 16 drives the screw rod 15 to rotate, and drives the sliding block 7 to move up and down in the sliding groove 6, so as to drive the screen to swing back and forth.

Referring to fig. 6, two guide rods 17 are fixed on one side of the screen box 1 where the support bar 5 is located, and the two guide rods 17 are parallel to the support bar 5 and symmetrically arranged with the support bar 5 as a center line. A guide block 18 is sleeved on the periphery of the guide rod 17, and a second connecting rod 19 is hinged with the guide block 18 and the second screen 3. In the swing process of the second screen 3, the guide block 18 is lifted on the guide rod 17 to drive the second connecting rod 19 to move up and down, so that the second screen 3 can be limited, and the supporting force of the sliding block 7 on the second screen 3 can be dispersed. A fixing plate 23 is fixed on one side of the sieve box 1 far away from the supporting strip 5, the fixing plate 23 is rectangular, and a spring 24 is fixedly connected between the fixing plate 23 and the second sieve 3. The spring 24 can play a role of restricting the second screen 3 from supporting the second screen 3 during the swing of the second screen 3.

Referring to fig. 1, the supports 10 are erected at the top end and the bottom end of the screen box 1, the two supports 10 are respectively provided with a conveying belt 11 in a rotating mode, the conveying belt 11 close to the top end of the screen box 1 is used for conveying gravel to be screened, and the conveying belt 11 arranged at the bottom end of the screen box 1 is used for conveying the gravel after screening. Referring to fig. 1 and 7, the support 10 is provided with rollers 20 at one end close to the screen box 1 and one end far away from the screen box 1, two drag chains 21 are jointly tensioned around the two rollers 20, one sides of the two drag chains 21 far away from the rollers 20 are jointly and concentrically fixedly connected with the conveyor belt 11, and one end of the support 10 far away from the screen box 1 is fixed with a drag motor 22 driving the rollers 20 to rotate. The traction motor 22 drives the roller 20 to rotate, and drives the traction chain 21, the conveyor belt 11 and the other roller 20 to rotate, so that the function of conveying sand is realized.

Referring to fig. 1, a discharge hopper 12 is fixed to the screen box 1 and communicates with the inside of the screen box 1, and one end of the discharge hopper 12, which is far from the screen box 1, is aligned with a conveyor belt 11 near the bottom of the screen box 1. As the sand is screened, it falls into the discharge hopper 12 and collects in the hopper 12 and falls onto the conveyor belt 11.

Referring to fig. 3, a viewing port 26 is formed in one side of the sieve box 1 away from the eccentric block 13, and a box door 27 for closing the viewing port 26 is hinged to a side wall of the sieve box 1. The observation port 26 is convenient for the staff to overhaul the sieve box 1, and in the process of sieving the gravel, the box door 27 is used for sealing the observation port 26, so that the gravel is prevented from running out of the observation port 26. Referring to fig. 3 and 8, a hook 28 is fixed on one side of the box door 27 away from the screen box 1, a pressing rod 29 is hinged to the side wall of the screen box 1, and a hanging ring 30 in snap fit with the hook 28 is hinged to one end of the pressing rod 29 close to the screen box 1. The hanging ring 30 is in snap fit with the hook 28, and the hanging ring 30 is pressed by the pressing rod 29, so that the aim of locking the box door 27 on the side wall of the screen box 1 is fulfilled.

The implementation principle and the beneficial effects of the embodiment are as follows:

starting a driving motor 14, driving the eccentric block 13 to rotate at a high speed by the driving motor 14 through a triangular belt and a driving wheel, driving the screen box 1 to vibrate by the eccentric block 13, conveying the sand to be screened onto a first screen 2 in the screen box 1 by a conveying belt 11, continuously jumping the sand on the first screen 2, and continuously swinging the sand with smaller diameter on two ends of a second screen 3 by the first screen 2, and simultaneously impacting a striking rod 4 to intermittently impact the first screen 2 to knock down the sand clamped on the first screen 2, finally converging the sand meeting the requirement into a discharging hopper 12, and simultaneously dropping onto the conveying belt 11 at the bottom end of the screen box 1 from the discharging hopper 12, driving the conveying belt 11 to rotate by a traction mechanism, thereby transporting the screened and qualified sand to the designated position.

The utility model discloses an avoided the grit to plug up the mesh on first screen cloth 2 and second screen cloth 3 for the sieve stone is more abundant with screening.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The oscillating sand screening machine is characterized by comprising a screen box (1), wherein a first screen (2) is fixed at the top of the screen box (1), a second screen (3) is arranged inside the screen box (1) in an oscillating manner, and a plurality of impact rods (4) are fixed on one side, facing the first screen (2), of the second screen (3);

a supporting strip (5) is fixed on the inner wall of one side of the screen box (1), a sliding groove (6) is formed in one side, facing the second screen (3), of the supporting strip (5), a sliding block (7) is arranged in the sliding groove (6) in a lifting mode, the sliding block (7) is hinged to one end of the second screen (3) and connected with a first connecting rod (8), and two sides of the second screen (3) are rotatably connected with the inner wall of the screen box (1) through rotating shafts (9) used for supporting the second screen (3);

supports (10) are erected at the top end and the bottom end of the screen box (1), a conveyor belt (11) is rotatably arranged on each support (10), a traction mechanism for driving the conveyor belt (11) to rotate is fixed on each support (10), and a discharge hopper (12) communicated with the inside of the screen box (1) is fixed at the bottom of the screen box (1);

an eccentric block (13) is fixed on one side of the sieve box (1), and a driving motor (14) for driving the eccentric block (13) to rotate is fixed on one side, far away from the sieve box (1), of the eccentric block (13).

2. The oscillating sand sieving machine of claim 1, characterized in that a screw rod (15) is rotatably arranged in the sliding groove (6), the slide block (7) is sleeved on the periphery of the screw rod (15) in a threaded manner, and a power motor (16) for driving the screw rod (15) to rotate is fixed on the outer wall of the sieve box (1).

3. The oscillating sand screen according to claim 1, characterized in that two guide rods (17) are fixed on the side of the screen box (1) where the supporting bar (5) is located, a guide block (18) is sleeved on the periphery of each guide rod (17), and a second connecting rod (19) is hinged to the guide block (18) and the second screen (3).

4. The oscillating sand screen according to claim 1, characterized in that the traction mechanism comprises two rollers (20), two traction chains (21) and a traction motor (22), the rollers (20) are fixed at both ends of the support (10), the two rollers (20) are jointly and tightly sleeved with the two traction chains (21), the conveyor belt (11) is coaxially and fixedly connected with the traction chains (21), and the traction motor (22) for driving one of the rollers (20) to rotate is fixed at one side of the support (10).

5. The oscillating sand screen according to claim 1, characterized in that a fixed plate (23) is fixed inside the screen box (1) on the side far away from the support bar (5), and a spring (24) is fixedly connected between the fixed plate (23) and the second screen (3).

6. The oscillating sand screen of claim 1, characterized in that the second screen (3) is fixed with a retaining edge (25) at the edge of the side where the striker rod (4) is located.

7. The oscillating sand screen according to claim 1, characterized in that a viewing port (26) is opened on one side of the screen box (1) far away from the eccentric block (13), and a box door (27) for closing the viewing port (26) is hinged to the side wall of the screen box (1).

8. The oscillating sand screen according to claim 7, characterized in that a hook (28) is fixed on one side of the box door (27) far away from the screen box (1), a pressing rod (29) is hinged on the side wall of the screen box (1), and a hanging ring (30) which is in snap fit with the hook (28) is hinged on one end of the pressing rod (29) close to the screen box (1).