CN215940653U - Gravel multistage screening machine with anti-blocking function - Google Patents

Abstract

The utility model provides a grit multistage screening machine with prevent blockking up function, feed inlet (2) have been seted up at screening casing (1) upper surface, just last fixed surface connection feeder hopper (3) to the feed inlet on the screening casing, deflector (4) that the top fixed connection slope of screening casing inner wall set up, delivery outlet (5) are seted up to one side of screening casing, delivery outlet two (8) are seted up to the opposite side of screening casing, fixed deflector (6) of inner wall slope and deflector two (7) of delivery outlet one, the deflector is two in the below of deflector one, be equipped with one-level sieving mechanism and second grade sieving mechanism in the screening casing, the second grade sieving mechanism is located one-level sieving mechanism under. The multi-stage separation device can realize multi-stage separation, the blanking is uniform, the separation effect is improved, the problem of equipment halt caused by blockage in the working process is solved, and the working efficiency is improved.

Description

Gravel multistage screening machine with anti-blocking function

Technical Field

The utility model relates to a screening machine, in particular to a sand and stone multi-stage screening machine with an anti-blocking function, and belongs to the technical field of sand and stone separation.

Background

The building engineering refers to an engineering entity formed by the construction of various building constructions and their auxiliary facilities and the installation of lines, pipelines and equipment matched with them. According to different building requirements, the requirements on gravels in the building process are different, some gravels need thicker gravels, and some fine gravels need fine gravels, and the existing sieving machine has the following problems in the use process, namely firstly, the problem of blockage is caused, when the separation volume size is equal to the distance between the rolling shafts, the problems of blockage, clamping and the like can occur, so that the operation of the sieving machine is stopped, and the fault occurs; secondly, the separation problem is that the device has high efficiency when separating solids according to one separation condition, but when the device needs to separate various specifications under various separation conditions, the efficiency is low when the solids with different volumes are separated, and the expected effect cannot be achieved; moreover, the operation length of the device is too long, and the separation time is too slow; thus, the problems of complicated process, complicated steps and more manpower and material resources are caused.

Disclosure of Invention

The utility model aims to provide a multi-stage sand and stone screening machine with an anti-blocking function, which can realize multi-stage sorting, is uniform in blanking, improves the separation effect, avoids the problem of equipment halt caused by blocking in the working process, and improves the working efficiency.

In order to achieve the purpose, the utility model provides a sand and stone multistage screening machine with an anti-blocking function, which comprises a screening machine shell, wherein a feeding hole is formed in the upper surface of the screening machine shell, the upper surface, opposite to the feeding hole, of the screening machine shell is fixedly connected with a feeding hopper, the top of the inner wall of the screening machine shell is fixedly connected with an obliquely arranged guide plate, a first output port is formed in one side of the screening machine shell, a second output port is formed in the other side of the screening machine shell, the first guide plate and the second guide plate are obliquely fixed on the inner wall of the first output port, the second guide plate is located below the first guide plate, a primary screening device and a secondary screening device are arranged in the screening machine shell, and the secondary screening device is located right below the primary screening device.

As a further improvement of the screening device, the primary screening device comprises a driving gear which is driven by a power mechanism and rotates in a limiting mode on the outer surface of a screening machine shell, a primary transmission chain is meshed on the circular arc outline of the driving gear, four driven gears which are arranged at equal intervals and rotate in a limiting mode on the outer surface of the screening machine shell are meshed and transmitted on the inner wall of the primary transmission chain, primary rolling shafts are coaxially fixed on one sides, close to the screening machine shell, of the driving gear and one sides, close to the screening machine shell, of the driven gears, the primary rolling shafts penetrate through the screening machine shell and extend into the screening machine shell, primary convex shafts are coaxially connected to the primary rolling shafts, and primary screening shifting blocks are fixed on the circular arc surfaces of the primary convex shafts.

As a further improvement of the utility model, the secondary screening device comprises nine secondary gears which are positioned on the outer wall of the screening casing and rotate in a limiting mode, teeth on the nine secondary gears are all in transmission engagement with a secondary transmission chain, one ends, close to the driving gear, of the secondary transmission chains are all coaxially connected with a secondary roller, the surface of the secondary roller penetrates through the screening casing and is in limiting rotation connection with the screening casing, a secondary convex shaft is fixedly sleeved on the surface, positioned in the screening casing, of the secondary roller, the surface of the secondary convex shaft is connected with a secondary screening shifting block, one surface, positioned right below the driving gear, of the nine secondary gears is in transmission connection with a first transmission belt, and the inner wall, far away from one end of the secondary gear, of the first transmission belt is in transmission engagement with the surface of the driving gear.

As a further improvement of the utility model, one surface of the nine secondary gears far away from the driving gear is in transmission connection with a first transmission belt, the inner wall of the first transmission belt far away from one end of the secondary gears is in transmission connection with a first gear rotating shaft, the gear rotating shaft penetrates through the screening machine shell and is in limited rotary connection with the screening machine shell, the surface of the gear rotating shaft is fixedly connected with a transmission gear, teeth on the transmission gear are in transmission engagement with a rotating shaft gear, one side of the rotating shaft gear, close to the screening machine shell, is in coaxial connection with the first rotating shaft, the surface of the first rotating shaft penetrates through the screening machine shell and extends into the screening machine shell, the arc-shaped profile of the first rotating shaft is in transmission connection with a second transmission belt, the inner wall of the second transmission belt, far away from one end of the first rotating shaft, is in transmission connection with a second rotating shaft, two ends of the rotating shaft are in fixed-axis rotary connection with the inner wall of the screening machine shell, and one end, close to the second rotating shaft, is opposite to the second transmission belt.

As a further improvement of the utility model, one side of the driving gear, which is far away from the screening machine shell, is fixedly connected with an eccentric shaft, the inner wall of the feed hopper is provided with two symmetrical through holes and is connected with a hinged rod in a limiting and rotating manner through the through holes, the arc-shaped profile of the hinged rod is fixedly connected with a shaking plate for stirring materials, one end of the hinged rod, which is close to the driving gear, is fixedly connected with a swinging rod, and the surface of the swinging rod is provided with a through groove matched with the eccentric shaft.

As a further improvement of the utility model, a support plate is fixedly arranged in the screening machine shell and is positioned on the inner side of the second transmission belt.

Compared with the prior art, the utility model realizes multi-stage separation of the sandstone through the arranged primary screening device and the secondary screening device, the blanking is uniform, the separation effect is improved, the sandstone rotates along with the secondary convex shaft by taking the secondary rolling shaft as the axis through the arranged screening shifting block, and the sandstone moves towards the direction of the guide plate II under the stirring action of the secondary screening shifting block, so that the aim that the sandstone with the size smaller than the gap between the adjacent secondary screening shifting blocks finally falls on the second driving belt is fulfilled, and the effects of stable conveying, screening and non-blocking are realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic illustration of the screening housing configuration of the present invention;

FIG. 3 is a partial schematic view of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of a primary roller structure according to the present invention;

FIG. 6 is a schematic view of a two-stage roller structure according to the present invention.

In the figure: 1. the screening machine comprises a screening machine shell, 101, an eccentric shaft, 102, a hinged rod, 103, a shaking plate, 104, a swing rod, 2, a feeding hole, 3, a feeding hopper, 4, a guide plate, 5, a first output port, 6, a first guide plate, 7, a second guide plate, 8, a second output port, 9, a supporting plate, 10, a driving gear, 11, a driven gear, 12, a first-stage rolling shaft, 13, a first-stage convex shaft, 14, a first-stage screening shifting block, 15, a first-stage transmission chain, 16, a second-stage gear, 17, a second-stage rolling shaft, 18, a second-stage convex shaft, 19, a second-stage screening shifting block, 20, a second-stage transmission chain, 21, a first transmission belt, 22, a gear rotating shaft, 23, a transmission gear, 24, a rotating shaft gear, 25, a first rotating shaft, 26, a second transmission belt, 27 and a second rotating shaft.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a sand and stone multistage screening machine with an anti-blocking function comprises a screening casing 1, wherein a feeding hole 2 is formed in the upper surface of the screening casing 1, a feeding hopper 3 is fixedly connected to the upper surface, which is opposite to the feeding hole 2, of the screening casing 1, a guide plate 4 which is obliquely arranged is fixedly connected to the top of the inner wall of the screening casing 1, a first output port 5 is formed in one side of the screening casing 1, a second output port 8 is formed in the other side of the screening casing 1, a first guide plate 6 and a second guide plate 7 are obliquely fixed to the inner wall of the first output port 5, the second guide plate 7 is positioned below the first guide plate 6, a primary screening device and a secondary screening device are arranged in the screening casing 1, and the secondary screening device is positioned right below the primary screening device; in pouring grit into feeder hopper 3, deflector 4 is located one-level sieving mechanism's top, through the guide effect of deflector 4, makes the grit fall in one-level sieving mechanism's top.

As shown in fig. 1, fig. 3, fig. 4 and fig. 5, the primary screening device includes a driving gear 10 driven by a power mechanism and rotating at a limited position on the outer surface of the screening casing 1, a primary transmission chain 15 is engaged on the circular arc profile of the driving gear 10, four driven gears 11 arranged at equal intervals and rotating at a limited position on the outer surface of the screening casing 1 are engaged on the inner wall of the primary transmission chain 15, primary rollers 12 are coaxially fixed on both sides of the driving gear 10 and the driven gears 11 close to the screening casing 1, the primary rollers 12 penetrate through the screening casing 1 and extend into the screening casing 1, primary protruding shafts 13 are coaxially connected on the primary rollers 12, and primary screening shifting blocks 14 are fixed on the circular arc surfaces of the primary protruding shafts 13; the driving gear 10 is driven by the power device to rotate, drives the primary transmission chain 15 to transmit, so that the driven gear 11 rotates clockwise in the same direction, thereby all the primary rollers 12 rotate clockwise, 4 primary convex shafts 13 on the primary rollers 12 are arranged, and are arranged at equal intervals, 6 primary screening shifting blocks 14 on the primary convex shaft 13 are arranged at equal intervals on the circumference, a larger gap is formed between the primary screening shifting blocks 14 on the adjacent primary rolling shafts 12, when the primary screening shifting block 14 rotates along with the primary convex shaft 13 by taking the primary rolling shaft 12 as the axis, the gravels can be shifted towards the direction of the first guide plate 6 at the upper end, and in the period, gravels with the size smaller than the gap between the first-stage screening shifting blocks 14 fall on the second-stage screening device, and finally fall onto the first guide plate 6 and slide down along the first guide plate 6, so that the sand with the largest size is primarily sorted.

As shown in fig. 1, 3 and 6, the secondary screening device includes nine secondary gears 16 located on the outer wall of the screening casing 1 and rotating in a limited manner, teeth on the nine secondary gears 16 are all engaged with a secondary transmission chain 20 in a transmission manner, one end of the secondary transmission chain 20 close to the driving gear 10 is all coaxially connected with a secondary roller 17, the surface of the secondary roller 17 penetrates through the screening casing 1 and is connected with the screening casing 1 in a limited manner in a rotating manner, a secondary protruding shaft 18 is fixedly sleeved on the surface of the secondary roller 17 located in the screening casing 1, the surface of the secondary protruding shaft 18 is connected with a secondary screening shifting block 19, one surface of the nine secondary gears 16 located right below the driving gear 10 is connected with a first transmission belt 21 in a transmission manner, and the inner wall of the first transmission belt 21, which is far away from one end of the secondary gear 16, is engaged with the surface of the driving gear 10 in a transmission manner; the sand and stone after primary sorting falls on a secondary screening device, under the transmission action of a first transmission belt 21, a driving gear 10 drives a secondary gear 16 below the driving gear to rotate in a fixed shaft manner, all secondary gears 16 are driven to rotate clockwise in the same direction through the transmission of a secondary transmission chain 20, a secondary roller 17 is driven to rotate by the clockwise rotation of the secondary gear 16, 7 secondary convex shafts 18 on the secondary roller 17 are arranged, the 7 secondary convex shafts 18 are arranged at equal intervals, 8 secondary screening shifting blocks 19 on the secondary convex shafts 18 are arranged at equal intervals in the circumference, small gaps exist among secondary screening shifting blocks 19 on adjacent secondary rollers 17, the secondary screening shifting blocks 19 rotate along with the secondary convex shafts 18 by taking the secondary rollers 17 as axes, the sand and stone move towards the direction of a second guide plate 7 under the shifting action of the secondary screening shifting blocks 19, and the sand and stone with the size smaller than the gaps of the adjacent secondary screening shifting blocks 19 finally falls on a second transmission belt 26, the remaining larger sand falls on the second guide plate 7 and slides downwards along the direction of the second guide plate 7.

One surface of one of the nine secondary gears 16 far away from the driving gear 10 is in transmission connection with a first transmission belt 21, the inner wall of one end of the first transmission belt 21 far away from the secondary gear 16 is in transmission connection with a first gear rotating shaft 22, the first gear rotating shaft 22 penetrates through the screening machine shell 1 and is in limited rotary connection with the screening machine shell 1, the surface of the first gear rotating shaft 22 is fixedly connected with a transmission gear 23, teeth on the transmission gear 23 are in transmission engagement with a first rotating shaft gear 24, one side of the first rotating shaft gear 24, close to the screening machine shell 1, is coaxially connected with a first rotating shaft 25, the surface of the first rotating shaft 25 penetrates through the screening machine shell 1 and extends into the screening machine shell 1, the arc-shaped outline of the first rotating shaft 25 is in transmission connection with a second transmission belt 26, the inner wall of one end of the second transmission belt 26, far away from the first rotating shaft 25, is in transmission connection with a second rotating shaft 27, two ends of the second rotating shaft 27 are in fixed-axis rotary connection with the inner wall of the screening machine shell 1, and one end of the second transmission belt 26, close to the second rotating shaft 27, is over against the second 8; one of the two-stage gears 16 is in transmission connection with a first transmission belt 21 with the gear rotating shaft 22, the transmission gear 23 rotates clockwise to enable the transmission gear 23 to rotate clockwise along with the gear rotating shaft 22, the transmission gear 23 is meshed with the rotating shaft gear 24 to drive the rotating shaft one 25 to rotate anticlockwise, and the second transmission belt 26 transmits anticlockwise on the rotating shaft one 25 and the rotating shaft two 27 and transmits the anticlockwise through the output port two 8.

An eccentric shaft 101 is fixedly connected to one side, far away from the screening machine shell 1, of the driving gear 10, two symmetrical through holes are formed in the inner wall of the feed hopper 3, the inner wall of the feed hopper is in limit rotation connection with a hinged rod 102 through the through holes, a shaking plate 103 for stirring materials is fixedly connected to the arc-shaped outline of the hinged rod 102, one end, close to the driving gear 10, of the hinged rod 102 is fixedly connected with a swing rod 104, and a through groove matched with the eccentric shaft 101 is formed in the surface of the swing rod 104; the eccentric shaft 101 is located on the driving gear 10 and far away from the rotating axis, so that the eccentric shaft 101 rotates by taking the central axis of the driving gear 10 as the axis, the swing rod 104 forms a crank swing rod structure, the swing rod 104 swings in a reciprocating manner by taking the hinged rod 102 as the axis, and the shaking plate 103 swings in a reciprocating manner by taking the hinged rod 102 as the axis, so that the sand and stones in the feeding hopper 3 are slowly and uniformly fed.

A support plate 9 is fixedly arranged in the screening machine shell 1, and the support plate 9 is positioned on the inner side of the second transmission belt 26; the second driving belt 26 stably bears sand and stones under the support of the support plate 9 and does not collapse downwards.

The working principle is as follows: when the utility model is used, gravels are poured into the feed hopper 3, the guide plate 4 is positioned above the primary screening device, the gravels fall above the primary screening device under the guiding action of the guide plate 4, the driving gear 10 is driven by the power device to rotate, the primary transmission chain 15 is driven to transmit, so that the driven gear 11 rotates clockwise, all primary rollers 12 rotate clockwise, 4 primary convex shafts 13 on the primary rollers 12 are arranged at equal intervals, 6 primary screening shifting blocks 14 on the primary convex shafts 13 are arranged at equal intervals in the circumference, larger gaps exist between the primary screening shifting blocks 14 on the adjacent primary rollers 12, when the primary screening shifting blocks 14 rotate along with the primary convex shafts 13 by taking the primary rollers 12 as axes, the gravels with the sizes smaller than the gaps between the primary screening shifting blocks 14 can be shifted towards the first guide plate 6 at the upper ends of the primary screening shifting blocks 14 to fall on the secondary screening device, finally, the gravel falls on the first guide plate 6 and slides downwards along the first guide plate 6, so that the gravel with the largest primary sorting size is sorted; the sand and stone after primary sorting falls on a secondary screening device, under the transmission action of a first transmission belt 21, a driving gear 10 drives a secondary gear 16 below the driving gear to rotate in a fixed shaft manner, all secondary gears 16 are driven to rotate clockwise in the same direction through the transmission of a secondary transmission chain 20, a secondary roller 17 is driven to rotate by the clockwise rotation of the secondary gear 16, 7 secondary convex shafts 18 on the secondary roller 17 are arranged, the 7 secondary convex shafts 18 are arranged at equal intervals, 8 secondary screening shifting blocks 19 on the secondary convex shafts 18 are arranged at equal intervals in the circumference, small gaps exist among secondary screening shifting blocks 19 on adjacent secondary rollers 17, the secondary screening shifting blocks 19 rotate along with the secondary convex shafts 18 by taking the secondary rollers 17 as axes, the sand and stone move towards the direction of a second guide plate 7 under the shifting action of the secondary screening shifting blocks 19, and the sand and stone with the size smaller than the gaps of the adjacent secondary screening shifting blocks 19 finally falls on a second transmission belt 26, the rest large sand falls on the second guide plate 7 and slides downwards along the direction of the second guide plate 7, so that secondary separation is realized;

in the primary sorting and secondary sorting process, the primary screening shifting block 14 and the secondary screening shifting block 19 both rotate, so that blockage cannot be caused.

One of the two-stage gears 16 is in transmission connection with a first transmission belt 21 between the gear rotating shaft 22, the transmission gear 23 rotates clockwise to enable the transmission gear 23 to rotate clockwise along with the gear rotating shaft 22, the transmission gear 23 is meshed with a rotating shaft gear 24 to drive the rotating shaft 25 to rotate anticlockwise, the transmission belt 26 transmits anticlockwise on the rotating shaft 25 and the rotating shaft 27 and transmits the anticlockwise through an output port two 8, an eccentric shaft 101 is located on a position, far away from a rotating shaft center, on a driving gear 10 to rotate by taking a central axis of the driving gear 10 as the shaft center through the eccentric shaft 101, a swing rod 104 forms a crank swing rod structure to enable the swing rod 104 to swing to and fro by taking the hinge rod 102 as the shaft center, a shaking plate 103 swings to and fro by taking the hinge rod 102 as the shaft center to enable sand stones in the feeding hopper 3 to be slowly and uniformly fed, a support plate 9 is fixedly arranged in the transmission belt 26, and the transmission belt second transmission belt 26 stably supports the sand stones, does not collapse downwards.

The sizes of the sand conveyed out of the first guide plate 6, the second guide plate 7 and the second output port 8 are reduced in sequence.

Claims (6)

1. The utility model provides a multistage screening machine of grit with prevent blockking up function, including screening casing (1), a serial communication port, feed inlet (2) have been seted up at screening casing (1) upper surface, last fixed surface who is just to feed inlet (2) feeder hopper (3) on screening casing (1), deflector (4) that the top fixed connection slope of screening casing (1) inner wall set up, delivery outlet (5) are seted up to one side of screening casing (1), delivery outlet two (8) are seted up to the opposite side of screening casing (1), the fixed deflector of inner wall slope (6) and deflector two (7) of delivery outlet (5), deflector two (7) are located the below of deflector (6), be equipped with one-level sieving mechanism and second grade sieving mechanism in screening casing (1), the second grade sieving mechanism is located one-level sieving mechanism under.

2. The multi-stage sand screening machine with the anti-blocking function according to claim 1, wherein, the primary screening device comprises a driving gear (10) which is driven by a power mechanism and rotates in a limiting way on the outer surface of the screening machine shell (1), a primary transmission chain (15) is meshed on the circular arc outline of the driving gear (10), four driven gears (11) which are arranged at equal intervals and rotate in a limiting way on the outer surface of the screening machine shell (1) are meshed on the inner wall of the primary transmission chain (15), one sides of the driving gear (10) and the driven gear (11) close to the screening machine shell (1) are coaxially fixed with primary rollers (12), the primary rollers (12) penetrate through the screening machine shell (1) and extend into the screening machine shell (1), the primary rolling shaft (12) is coaxially connected with a primary convex shaft (13), and a primary screening shifting block (14) is fixed on the arc surface of the primary convex shaft (13).

3. The multi-stage sand and stone screening machine with the anti-blocking function according to claim 2, wherein the secondary screening device comprises nine secondary gears (16) which are located on the outer wall of the screening machine shell (1) and rotate in a limiting manner, teeth on the nine secondary gears (16) are in transmission engagement with a secondary transmission chain (20), one ends, close to the driving gear (10), of the secondary transmission chains (20) are coaxially connected with secondary rollers (17), the surfaces of the secondary rollers (17) penetrate through the screening machine shell (1) and are in limiting rotation connection with the screening machine shell (1), a secondary convex shaft (18) is fixedly sleeved on the surface, located in the screening machine shell (1), of the secondary rollers (17), the surface of the secondary convex shaft (18) is connected with a secondary screening shifting block (19), and one surface of the nine secondary gears (16) located under the driving gear (10) is in transmission connection with a first transmission belt (21), the inner wall of one end of the first transmission belt (21) far away from the secondary gear (16) is in transmission engagement with the surface of the driving gear (10).

4. The multi-stage sand and stone screening machine with the anti-blocking function according to claim 3, wherein one surface of one of the nine secondary gears (16) far away from the driving gear (10) is in transmission connection with a first transmission belt (21), the inner wall of one end of the first transmission belt (21) far away from one end of the secondary gear (16) is in transmission connection with a gear rotating shaft (22), the gear rotating shaft (22) penetrates through the screening machine shell (1) and is in limited rotation connection with the screening machine shell (1), the surface of the gear rotating shaft (22) is fixedly connected with a transmission gear (23), teeth on the transmission gear (23) are in transmission engagement with a rotating shaft gear (24), one side of the rotating shaft gear (24) close to the screening machine shell (1) is coaxially connected with a first rotating shaft (25), the surface of the rotating shaft (25) penetrates through the screening machine shell (1) and extends into the screening machine shell (1), and the arc-shaped contour of the rotating shaft (25) is in transmission connection with a second transmission belt (26), the inner wall of one end, far away from the first rotating shaft (25), of the second driving belt (26) is in transmission connection with a second rotating shaft (27), the two ends of the second rotating shaft (27) are in fixed-shaft rotation connection with the inner wall of the screening machine shell (1), and one end, close to the second rotating shaft (27), of the second driving belt (26) is opposite to the second output port (8).

5. The multi-stage sand-gravel screening machine with the anti-blocking function according to claim 4, wherein an eccentric shaft (101) is fixedly connected to one side of the driving gear (10) far away from the screening housing (1), two symmetrical through holes are formed in the inner wall of the feeding hopper (3) and are connected with the hinged rod (102) in a limiting and rotating mode through the through holes, a shaking plate (103) for stirring materials is fixedly connected to the arc-shaped contour of the hinged rod (102), a swinging rod (104) is fixedly connected to one end, close to the driving gear (10), of the hinged rod (102), and a through groove matched with the eccentric shaft (101) is formed in the surface of the swinging rod (104).

6. The sand and stone multi-stage screening machine with the anti-blocking function according to claim 4, characterized in that a support plate (9) is fixedly arranged in the screening machine shell (1), and the support plate (9) is positioned on the inner side of the second driving belt (26).

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