CN220804252U - Gravel screening mechanism with adjustable inclination - Google Patents

Abstract

The utility model discloses a sand and stone screening mechanism with adjustable inclination, which comprises a frame, wherein two sides of the upper surface of the frame are elastically connected with vibrating shells, four corners of the bottom of the frame are respectively provided with a storage plate, the side walls of the storage plates are slidably connected with supporting shells, the inside of the supporting shells is provided with a stable supporting component, and the storage plates are connected in the supporting shells in a lifting manner through the stable supporting component.

Description

Gravel screening mechanism with adjustable inclination

Technical Field

The utility model belongs to the technical field of sand screening, and particularly relates to a sand screening mechanism with adjustable inclination.

Background

The sand is widely applied to fields of houses, roads, highways, railways, engineering and the like because of good hardness and stable chemical properties, the sand belongs to loose objects, but particles are generally high in hardness, and the chemical properties are stable under the ground environment, and for sandstone, the weathering resistance is generally high, particularly for siliconized quartz sandstone, the hardness of the sandstone exceeds that of granite, other impurities are screened out by a screening machine before the sandstone is used, so that the sand is better purified, and the screening machines on the market are classified into large screening machines, small screening machines convenient to move and the like, and some small screening machines convenient to move have the characteristic of convenient carrying and moving and are used in wide places. Publication No.: CN217963505U discloses a grit screening mechanism, including stabilizing the case, stabilizing the top of case and seted up stable opening, stable open-ended inside fixed mounting has the collection funnel, the equal fixedly connected with slope guide plate in the both ends of stabilizing the incasement portion, the bottom of stabilizing the incasement portion is provided with stable spout, the inside sliding connection of stable spout has stable slider, stable slider's top fixedly connected with screening case, stable recess has all been seted up at the both ends of stabilizing the case, the inside bottom fixedly connected with first motor of stable recess, and the transfer line drives screening case and control the removal in the upset process, and then accomplish the shake to screening case, and the screen cloth in the classification case is because screening bore is different and accomplish the classification screening to the grit, further improvement is to the efficiency of the classification screening of grit, and the fine and smooth degree of improvement grit screening, further improvement grit availability factor.

The problems with the above techniques are: the screening net of the small screening machine convenient to move is fixed in position, so that when a sand pile with more or less sundries is screened, the inclined angle of the screening net is fixed, the outward discharging speed is fixed, the sand piles are required to be screened for the second time, screening efficiency is reduced, a large amount of time is consumed, meanwhile, when the small screening machine convenient to move is used for moving work sites in different places, supporting legs at the bottom are fixed in length, the sand piles cannot be placed effectively and stably in some places with pits and optimal screening, vibration generated during work is caused, and the unstable supporting legs are easily caused to occur, so that the service life of the sand pile screening mechanism is shortened, and therefore, the sand screening mechanism with adjustable inclination is provided.

Disclosure of utility model

Aiming at the problems existing in the prior art, the utility model provides the sand screening mechanism with adjustable inclination, which is provided with the screening angle of the optimal screening net according to the sand pile screened each time, so that secondary screening is avoided, screening efficiency is improved, necessary working time is reduced, meanwhile, the screening machine can be placed and installed more stably according to different working sites, the advantages of inclined collapse and service life reduction caused by severe shaking in working are avoided, the problems that most of screening nets of the small screening machine convenient to move are fixed in position, the sand pile with more or smaller sundries is screened because the inclination angle of the screening nets is fixed, the sand pile is required to be screened secondarily because the inclination angle of the screening nets is also fixed, the efficiency of screening is reduced, a great amount of time is consumed, and the support legs at the bottom of the small screening machine convenient to move are fixed in length when the working sites of different sites are moved, so that the support legs can not be placed stably and effectively in the working sites which are easy to collapse in a relatively well, and the problem of stable shaking is solved.

The sand and stone screening mechanism with the adjustable inclination comprises a frame, wherein two sides of the upper surface of the frame are elastically connected with vibrating shells, one ends between the two groups of vibrating shells are rotatably connected with screening plates, one ends of the upper surfaces of the two groups of vibrating shells are respectively provided with a screening efficiency adjusting component, the screening plates are rotatably connected with one ends between the two groups of vibrating shells through the screening efficiency adjusting components, four corners of the bottom of the frame are respectively provided with a storage plate, the side walls of the storage plates are slidably connected with supporting shells, stable supporting components are arranged inside the supporting shells, and the storage plates are connected inside the supporting shells in a lifting mode through the stable supporting components.

As the preferable mode of the utility model, one end of each of two sides of the screening plate is rotatably connected with a guide rod, one end of each of two groups of opposite sides of the vibrating shell is provided with a guide groove corresponding to the guide rod, and one end of the guide rod is movably connected inside the guide groove.

As a preferred mode of the screening efficiency adjusting assembly, the screening efficiency adjusting assembly comprises a second screw rod, wherein the second screw rod is connected with an adjusting nut plate through threads, one end of the adjusting nut plate is fixedly provided with a linkage plate, the bottom of the linkage plate is connected with a rotating plate in a sliding mode, the bottom of the rotating plate is connected with a driving rod in a rotating mode, one end of the screening plate is provided with a rotating groove corresponding to the driving rod, and one end of the driving rod is rotatably installed in the rotating groove.

As the preferable mode of the utility model, one end of the upper surface of each of the two groups of vibration shells is provided with a stand column, the lower ends of the opposite sides of the two groups of stand columns are provided with lifting grooves, the second screw rod is rotatably arranged in the lifting grooves, the upper ends of the opposite sides of the two groups of stand columns are provided with grooves, the interiors of the two groups of grooves are rotatably connected with synchronous wheels, the two groups of synchronous wheels penetrate through the lower ends of the interiors of the grooves and are fixedly connected with the second screw rod, the lower ends of the interiors of the grooves are provided with another group of through holes, and synchronous belts are sleeved between the two groups of synchronous wheels.

As preferable in the utility model, a gear motor is fixedly arranged at the upper ends of a group of upright posts, an output shaft of the gear motor penetrates through the upper ends of a group of upright posts to a groove to be fixedly connected with a synchronous wheel, and through holes are formed at the upper ends of a group of upright posts.

As preferable, the stable supporting component comprises a first screw rod, a sliding groove corresponding to the storage plate is formed in the upper end of the supporting shell, the lower end of the storage plate is slidably mounted in the sliding groove, a thread groove corresponding to the first screw rod is formed in the bottom of the storage plate, and the first screw rod is in threaded connection with the thread groove.

As the preferable mode of the utility model, the first screw rod is rotatably arranged at the lower end in the sliding groove, the gear is fixedly arranged at the lower end in the sliding groove, the movable groove is formed at the lower end in the sliding groove, one side of the gear is connected with the other group of gears in a meshed manner, the lower end on one side of the supporting shell is provided with the expansion plate, the inside of the expansion plate is provided with the communicating groove communicated with the sliding groove, the two groups of gears are rotatably arranged in the movable groove and the communicating groove respectively, the middle part of the upper surface of the other group of gears is fixedly provided with the driving rotating rod, the driving rotating rod penetrates through the upper surface of the expansion plate to the communicating groove, and the upper surface of the expansion plate is provided with the through hole.

Compared with the prior art, the utility model has the following beneficial effects:

1. According to the utility model, through the design that the driving rod is rotationally connected with the rotating groove, the speed reducing motor is started according to the number of the sand piles to be screened which are placed as required, the speed reducing motor can control the linkage plate to be matched with the rotating plate through the second screw rod and the adjusting nut plate so that the driving rod drives the screening plate to move upwards, the screening plate can slide along the guide groove when in rotary movement, after the screening plate moves to the optimal screening angle, the speed reducing motor can be stopped, the two driving rods controlled by the two groups of synchronous wheels and the synchronous belt can be used for stably fixing the stopped position of the screening plate, the angle of screening inclined dumping is optimal, the time of screening discharging can be changed, therefore, different numbers of sand piles can be screened better, secondary screening is not needed, the screening efficiency is improved, the necessary working time is reduced, the first screw rod can be matched with the threaded groove to control the lifting movement of the storage plate in the sliding groove when in rotation, the distance of the bottom of the support shell is adjusted with the bottom of the frame, the screening machine can be placed at the working position of the screening machine, the shaking effect can be further reduced when the two groups of the screening machine can be stably driven by the rotating rod, and the shaking effect can be further reduced when the shaking of the screen is achieved, and the shaking effect can be more stable when the screen is achieved, and the shaking of the screen can be stably driven by the frame.

2. According to the utility model, through the design that one end of the guide rod is movably connected in the guide groove, when the screening plate rotates between the two groups of vibration shells, the guide rod can be driven to move in the guide groove, so that the effect that the stability of the screening plate can be effectively improved when the guide rod and the guide groove are matched.

3. According to the utility model, through the design that the bottom of the linkage plate is slidably connected with the rotating plate, when the screening plate rotates, the driving rod is driven to move up and down, and the driving rod can drive the rotating plate to slide at the bottom of the linkage plate through the rotating movement of the screening plate, so that the effect of stably controlling the screening plate to rotate is achieved.

4. According to the utility model, the design of the synchronous belt is sleeved between the two groups of synchronous wheels, one group of synchronous wheels can rotate through the synchronous belt to control the other group of synchronous wheels to rotate, the two groups of synchronous wheels can simultaneously rotate and can jointly drive the connected second screw rod to rotate, so that the two driving rods can simultaneously lift and move, and the effect of stably driving the screening plate to rotate and adjust the angle is achieved.

5. According to the utility model, through the design that the output shaft of the gear motor penetrates through the upper surface of a group of upright posts to the groove and is fixedly connected with the synchronous wheels, the gear motor can drive one synchronous wheel to rotate first, and the other synchronous wheel can be controlled to rotate by the synchronous belt, so that the effect that the gear motor can simultaneously control two second screw rods to enable the rotation angle of the screening plate is achieved.

6. According to the utility model, through the design that the lower end of the storage plate is slidably arranged in the sliding groove, the support shell can slide in the storage plate through the sliding groove, so that the support shell can be close to or far away from the rack, and the storage plate can be controlled to slide in the sliding groove by rotating the first screw rod, so that the effect that the distance between the support shell and the rack can be controlled by the direction of the rotation of the first screw rod is achieved.

7. According to the utility model, the driving rotating rod is fixedly arranged in the middle of the upper surface of the other group of gears, the driving rotating rod can drive the other group of gears to rotate, the other group of gears can enable the meshed group of gears to rotate through the meshed relation, and the first screw rod can be controlled to rotate by the group of gears, so that the effect that the driving rotating rod can control the distance between the supporting shell and the frame in an external manner through controlling the first screw rod is achieved, and the screening machine can perform placing work more stably is achieved.

Drawings

FIG. 1 is a schematic perspective view of the overall structure provided by an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a structure of a stabilizing support assembly provided in an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a screening plate structure provided by an embodiment of the present utility model;

Fig. 4 is a schematic perspective view of a screening efficiency adjusting assembly according to an embodiment of the present utility model.

In the figure: 1. a frame; 2. vibrating the shell; 3. a screening plate; 4. a storage plate; 5. a support case; 6. an expansion board; 7. a column; 8. a synchronous belt; 9. a guide rod; 10. a stabilizing support assembly; 11. a screening efficiency adjustment assembly; 12. a synchronizing wheel; 101. a first screw rod; 102. a gear; 103. driving the rotating rod; 1101. a speed reducing motor; 1102. a second screw rod; 1103. adjusting the nutplate; 1104. a linkage plate; 1105. a rotating plate; 1106. and a driving rod.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the sand screening mechanism with adjustable inclination provided by the embodiment of the utility model comprises a frame 1, wherein two sides of the upper surface of the frame 1 are elastically connected with vibrating shells 2, one ends between two groups of vibrating shells 2 are rotationally connected with screening plates 3, one ends of the upper surfaces of two groups of vibrating shells 2 are respectively provided with a screening efficiency adjusting component 11, the screening plates 3 are rotationally arranged at one ends between two groups of vibrating shells 2 through the screening efficiency adjusting components 11, four corners of the bottom of the frame 1 are respectively provided with a storage plate 4, side walls of the storage plates 4 are slidably connected with a supporting shell 5, a stable supporting component 10 is arranged inside the supporting shell 5, and the storage plates 4 are connected inside the supporting shell 5 in a lifting manner through the stable supporting component 10.

The scheme is adopted: through the design that actuating lever 1106 and rotary tank rotate to be connected, the quantity of the grit heap of screening of placing earlier starts gear motor 1101, gear motor 1101 just can control linkage plate 1104 cooperation rotary plate 1105 through second lead screw 1102 and adjusting nut board 1103 and make actuating lever 1106 drive screening plate 3 upwards remove, screening plate 3 can slide along the guide way when rotatory removal, screening plate 3 removes the best screening angle after, just can stop gear motor 1101 and pass through two sets of synchronizing wheel 12 and hold-in range 8 two actuating levers 1106 of controlling, make screening plate 3 stable carry out the fixed position of stopping, make the screening angle of slope material fall be the best, the time of screening ejection of compact also can change, consequently, can be better screen the grit heap of different quantity, make and need not carry out the secondary screening, thereby reach the efficiency that improves the screening and reduce necessary operating time's effect, first lead screw 101 and thread groove threaded connection's design, can control storage plate 4 at the inside lift groove motion of sliding groove when first lead screw 101 rotates, make the bottom part 5 of support housing, can be reached the stable position of falling down in the setting up of the frame that can be reached in the setting up of the frame, can make the setting down the frame of the setting up position of the machine that can be used for the stable position of supporting machine 103, can be reached when the bottom of the frame is adjusted to the frame is 1, can be reached in order to change the stable position, the setting down the machine that can be reached in order to change the machine that the machine is stable position is can be reached to the machine frame is easy to the place to the bottom of setting down, can be used to change the machine 1, can be to can be used to change the machine 1 to can be to the bottom can be to the place the bottom has high-down position to can be to the machine 1 to can change the bottom has high-down position to can be to have high speed can be used to the machine used to have convenient to can move the machine used to can and can have convenient to use.

Referring to fig. 3 and 4, one end of two sides of the screening plate 3 is rotatably connected with a guide rod 9, one end of two opposite sides of the two groups of vibrating shells 2 is provided with a guide groove corresponding to the guide rod 9, and one end of the guide rod 9 is movably connected inside the guide groove.

The scheme is adopted: through guide bar 9 one end swing joint in the inside design of guide way, screening board 3 can drive guide bar 9 and remove at the inside guide way in the time of rotating between two sets of vibrations shells 2 to reached the cooperation between guide bar 9 and the guide way can effectually improve the effect of stability when screening board 3 rotate.

Referring to fig. 4, the screening efficiency adjusting assembly 11 includes a second screw rod 1102, the second screw rod 1102 is connected with an adjusting nut plate 1103 through threads, one end of the adjusting nut plate 1103 is fixedly provided with a linkage plate 1104, the bottom of the linkage plate 1104 is slidably connected with a rotating plate 1105, the bottom of the rotating plate 1105 is rotatably connected with a driving rod 1106, one end of the screening plate 3 is provided with a rotating groove corresponding to the driving rod 1106, and one end of the driving rod 1106 is rotatably installed inside the rotating groove.

The scheme is adopted: through the design of linkage plate 1104 bottom sliding connection having the rotor plate 1105, when screening board 3 is rotatory, drive actuating lever 1106 lift removal, actuating lever 1106 just can drive the rotor plate 1105 through the rotary motion of screening board 3 and slide in the linkage plate 1104 bottom to the effect that control screening board 3 that can be stable rotated has been reached.

Referring to fig. 4, two sets of vibrations shell 2 upper surface one end all is provided with stand 7, the lift groove has all been seted up to the lower extreme of two sets of stand 7 opposite sides, second lead screw 1102 rotates and installs in the lift inslot, the upper end of two sets of stand 7 opposite sides is all set up flutedly, the inside synchronous wheel 12 that all rotates to be connected with of two sets of recesses, two sets of synchronous wheels 12 all run through the inside lower extreme of recess and second lead screw 1102 fixed connection, another set of through-hole has been seted up to the inside lower extreme of recess, the cover is equipped with hold-in range 8 between two sets of synchronous wheels 12.

The scheme is adopted: the design of the synchronous belt 8 is sleeved between the two groups of synchronous wheels 12, one group of synchronous wheels 12 can rotate to control the other group of synchronous wheels 12 to rotate through the synchronous belt 8, the two groups of synchronous wheels 12 can simultaneously rotate and can jointly drive the connected second screw rod 1102 to rotate, so that the two driving rods 1106 can simultaneously lift and move, and the effect of stably driving the screening plate 3 to rotate and adjust the angle is achieved.

Referring to fig. 4, a gear motor 1101 is fixedly mounted on the upper ends of a group of upright posts 7, an output shaft of the gear motor 1101 penetrates through the upper ends of the group of upright posts 7 to a groove to be fixedly connected with a synchronous wheel 12, and through holes are formed in the upper ends of the group of upright posts 7.

The scheme is adopted: through the design that the output shaft of the gear motor 1101 penetrates through the upper surface of a group of upright posts 7 to be fixedly connected with the synchronous wheels 12, the gear motor 1101 can drive one synchronous wheel 12 to rotate first, and the other synchronous wheel 12 can be controlled to rotate through the synchronous belt 8, so that the effect that the gear motor 1101 can simultaneously control two second screw rods 1102 to enable the screening plate 3 to rotate in angle is achieved.

Referring to fig. 2, the stable supporting assembly 10 includes a first screw rod 101, a sliding groove corresponding to the receiving plate 4 is provided at an upper end of the supporting case 5, a lower end of the receiving plate 4 is slidably mounted inside the sliding groove, a thread groove corresponding to the first screw rod 101 is provided at a bottom of the receiving plate 4, and the first screw rod 101 is in threaded connection with the thread groove.

The scheme is adopted: through the design of take in board 4 lower extreme slidable mounting in the sliding tray inside, support shell 5 can slide at take in board 4 through the sliding tray for can be close to or keep away from frame 1, first lead screw 101 rotates just can control take in board 4 and slide at the sliding tray inside, thereby has reached the effect that the direction when first lead screw 101 pivoted can control the distance between support shell 5 and frame 1.

Referring to fig. 2, a first screw rod 101 is rotatably mounted at the lower end of the inner portion of a sliding groove, a gear 102 is fixedly mounted at the lower end of the first screw rod 101, a movable groove is formed at the lower end of the inner portion of the sliding groove, one side of the gear 102 is connected with another group of gears 102 in a meshed manner, an expansion plate 6 is arranged at the lower end of one side of a supporting shell 5, a communicating groove communicated with the sliding groove is formed in the inner portion of the expansion plate 6, two groups of gears 102 are rotatably mounted in the movable groove and the communicating groove respectively, a driving rotating rod 103 is fixedly mounted in the middle of the upper surface of the other group of gears 102, the driving rotating rod 103 penetrates through the upper surface of the expansion plate 6 to the communicating groove, and through holes are formed in the upper surface of the expansion plate 6.

The scheme is adopted: through the design of another group of gears 102 upper surface middle part fixed mounting has drive bull stick 103, and drive bull stick 103 can drive another group of gears 102 rotation, and another group of gears 102 just can make a set of gears 102 rotation of meshing through the relation of meshing, and a set of gears 102 just can control first lead screw 101 rotation to reached drive bull stick 103 can control the distance of first lead screw 101 control support shell 5 and frame 1 outside, make the effect of placing work of sieve separator more stable.

The working principle of the utility model is as follows:

When in use, the driving rotating rod 103 at different positions is rotated according to the concave-convex degree of the working position, the driving rotating rod 103 can drive the other group of gears 102 to rotate, the other group of gears 102 can drive the meshed group of gears 102 to rotate through the meshed relation, the group of gears 102 can control the first screw rod 101 to rotate, the driving rotating rod 103 can control the first screw rod 101 to rotate outside, the first screw rod 101 can cooperate with the thread groove to control the lifting movement of the storage plate 4 in the sliding groove during rotation, the distance of the bottom of the supporting shell 5 is adjusted with the bottom of the frame 1, the supporting shell 5 at different positions can adjust different positions to support the screening machine, the whole placement is more stable, then, the gear motor 1101 is started according to the number of the sand piles to be screened, the gear motor 1101 can control the linkage plate 1104 to be matched with the rotating plate 1105 through the second screw rod 1102 and the adjusting nut plate 1103, so that the driving rod 1106 drives the screening plate 3 to move upwards, the screening plate 3 can slide along the guide groove when moving in a rotating manner, after the screening plate 3 moves to an optimal screening angle, the gear motor 1101 can be stopped, the two driving rods 1106 controlled by the two groups of synchronous wheels 12 and the synchronous belt 8 can be stopped, the screening plate 3 can be stably fixed at the stopped position, the screening inclined dumping angle is optimal, the screening discharging time can be changed, and therefore, sand piles with different numbers can be better screened, and secondary screening is not needed.

To sum up: this sand screening mechanism of adjustable gradient, through the cooperation between stable support assembly 10 and the screening efficiency adjustment subassembly 11, the screening net of this kind of convenient small-size sieve separator that removes has been solved and most all is fixed in position, this just leads to screening debris more or less sand heap in time, because the inclination of screening net is fixed, the speed of outwards discharging is also fixed, lead to these sand heap to need secondary screening, the efficiency of screening has been reduced and a large amount of time has been spent, simultaneously this kind of convenient small-size sieve separator that removes is at the job site in different places, the supporting leg of bottom is fixed length, this just results in some relatively potholes and the place that best filters can not effectively steady place, the vibrations that lead to producing in the time of work in addition unstable landing leg, the problem of the condition that the slope collapses very easily appears.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. Gravel screening mechanism of adjustable gradient, including frame (1), its characterized in that: the novel vibrating screen comprises a frame (1), wherein vibrating shells (2) are elastically connected to two sides of the upper surface of the frame (1), a screening plate (3) is rotatably connected to one end between the vibrating shells (2), screening efficiency adjusting components (11) are arranged at one end of the upper surface of the vibrating shells (2), the screening plate (3) rotates at one end between the two vibrating shells (2) through the screening efficiency adjusting components (11), storage plates (4) are arranged at four corners of the bottom of the frame (1), supporting shells (5) are slidably connected to the side walls of the storage plates (4), stable supporting components (10) are arranged inside the supporting shells (5), and the storage plates (4) are connected to the inside of the supporting shells (5) in a lifting mode through the stable supporting components (10).

2. An adjustable slope sand screening mechanism as claimed in claim 1, wherein: the screening plate is characterized in that one ends of two sides of the screening plate (3) are respectively and rotatably connected with a guide rod (9), guide grooves corresponding to the guide rods (9) are respectively formed in one ends of two opposite sides of the vibrating shell (2), and one ends of the guide rods (9) are movably connected inside the guide grooves.

3. An adjustable slope sand screening mechanism as claimed in claim 1, wherein: screening efficiency adjusting part (11) are including second lead screw (1102), second lead screw (1102) have through threaded connection to adjust nut board (1103), adjust nut board (1103) one end fixed mounting has linkage board (1104), linkage board (1104) bottom sliding connection has rotation board (1105), rotation board (1105) bottom rotates and is connected with actuating lever (1106), screening board (3) one end has been seted up and has been driven the corresponding rotation groove of lever (1106), actuating lever (1106) one end is rotated and is installed in the rotation inslot portion.

4. A sand screening mechanism with adjustable inclination as claimed in claim 3, wherein: two sets of vibrations shell (2) upper surface one end all is provided with stand (7), and two sets of the lift groove has all been seted up to the lower extreme of stand (7) opposite side, second lead screw (1102) rotate and install in the lift inslot portion, two sets of the upper end of stand (7) opposite side all is seted up flutedly, two sets of the inside synchronizing wheel (12) that all rotate of recess is connected with, two sets of synchronizing wheel (12) all run through recess inside lower extreme and second lead screw (1102) fixed connection, another set of through-hole has been seted up to the inside lower extreme of recess, two sets of cover is equipped with hold-in range (8) between synchronizing wheel (12).

5. The adjustable slope sand screening mechanism of claim 4, wherein: the upper ends of the upright posts (7) are fixedly provided with a gear motor (1101), an output shaft of the gear motor (1101) penetrates through the upper ends of the upright posts (7) to be fixedly connected with the synchronous wheels (12), and through holes are formed in the upper ends of the upright posts (7).

6. An adjustable slope sand screening mechanism as claimed in claim 1, wherein: the stable supporting component (10) comprises a first screw rod (101), a sliding groove corresponding to the containing plate (4) is formed in the upper end of the supporting shell (5), the lower end of the containing plate (4) is slidably mounted inside the sliding groove, a thread groove corresponding to the first screw rod (101) is formed in the bottom of the containing plate (4), and the first screw rod (101) is in threaded connection with the thread groove.

7. The adjustable slope sand screening mechanism of claim 6, wherein: the utility model discloses a sliding tray, including sliding tray, fixed mounting, drive bull stick, extension board (6), fixed mounting, drive bull stick, fixed mounting is in the inside lower extreme of sliding tray, first lead screw (101) rotates installs in the inside lower extreme of sliding tray, movable groove has been seted up to the inside lower extreme of sliding tray, gear (102) one side meshing is connected with another group gear (102), the lower extreme of supporting shell (5) one side is provided with extension board (6), the inside intercommunication groove that communicates with the sliding tray of having seted up of extension board (6), two sets of gear (102) rotate respectively and install in movable groove and intercommunication inslot portion, another group drive bull stick (103) fixed mounting is gone up at gear (102) upper surface, drive bull stick (103) runs through extension board (6) upper surface to the intercommunication groove, the through hole has been seted up to extension board (6) upper surface.