CN211756802U

CN211756802U - Civil engineering sand screening machine

Info

Publication number: CN211756802U
Application number: CN202020337915.2U
Authority: CN
Inventors: 马永亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-10-27
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a civil engineering sand sieving machine mainly relates to civil engineering device field. The power distribution box comprises a box body, be equipped with the pivot near feed inlet department in the box, the fixed first screen cloth that is equipped with in the pivot, be connected with the extension spring between one side of first screen cloth and the box inner wall, just first screen cloth bottom is equipped with the second screen cloth in the box, be connected with the spring between the four corners of second screen cloth and the box inner wall, one end in the box is equipped with hits the pole, hit the pole and be located second screen cloth bottom, the one end that the connecting axle is located outside the box is equipped with the motor, pivot one end runs through the box lateral wall and is equipped with drive mechanism, the motor passes through the intermittent rotation of drive mechanism drive pivot, the bottom half is equipped. The beneficial effects of the utility model reside in that: adopt multistage screening, guarantee the qualification rate of final product, and every grade of screening all adopts dynamic screening, prevents that the screen cloth from blockking up, makes the screening more thorough.

Description

Civil engineering sand screening machine

Technical Field

The utility model relates to a civil engineering device field specifically is a civil engineering sand sieving machine.

Background

Sand, which refers to a loose mixture of sand and gravel. Geology refers to mineral or rock particles with the particle size of 0.074-2 mm as sand and gravel or angle gravel with the particle size of more than 2mm, wherein the building sand refers to fine aggregate with the particle size of less than 4.75 mm and the fineness modulus MX of 3.7-1.6, namely the building sand is obtained by grinding large-particle sand stones, and in the process of grinding the sand stones, individual sand stones are not crushed or the crushing degree is insufficient, so that the sand stone materials need to be screened before use.

Sand screeners have now been manufactured to replace traditional manual sand screening, improving screening efficiency and saving labor. But the screening is once only carried out to current sand screening machine mostly, because the screen cloth specification diverse of sand screening machine, this has just also led to still having unqualified material in the grit material after the screening, needs the manual work to carry out secondary screening, has reduced work efficiency, and individual multistage screening equipment also only adopts static screening, and the large granule grit on the screen cloth will block up the screen cloth like this, influences the final effect of grit screening.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a civil engineering sand sieving machine, it adopts multistage screening, guarantees the qualification rate of final product, and every grade of screening all adopts dynamic screening, prevents that the screen cloth from being blockked up, makes the screening more thorough.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

the utility model provides a civil engineering sand sieving machine, includes the box, the box top is equipped with the feed inlet, the bottom half is equipped with the discharge gate, be close to feed inlet department in the box and be equipped with the pivot, the fixed first screen cloth that is equipped with in the pivot, be connected with the extension spring between one side of first screen cloth and the box inner wall, just first screen cloth bottom is equipped with the second screen cloth in the box, be connected with the spring between the four corners of second screen cloth and the box inner wall, box one side is equipped with the connecting axle that runs through the box lateral wall, the one end that the connecting axle is located the box is equipped with the hitting pole, the hitting pole is located second screen cloth bottom, the one end that the connecting axle is located the box outside is equipped with the motor, pivot one end runs through the box lateral wall and is equipped with drive mechanism.

Preferably, drive mechanism includes driving gear and driven gear, driven gear fixes the one end that the box was run through in the pivot, the driving gear rotates and sets up on the box lateral wall and with driven gear meshing, the tooth of driving gear has partial disappearance, be connected with the drive belt between driving gear and the motor.

Preferably, the inner walls of the box body on two sides of the first screen are provided with stop blocks, opposite faces of the stop blocks are arc-shaped faces, and one end, far away from the first screen, of the tension spring is fixed on the bottom face of the stop block on one side.

Preferably, the top of the block is provided with a diversion slope inclining towards the first screen.

Preferably, the width of the bottom surface of the guide slope is greater than the width of the surface of the stop block.

Contrast prior art, the beneficial effects of the utility model reside in that:

the sand and stone are poured into the box body from the feeding hole, the rotating shaft is arranged in the middle of the first screen, the rotating shaft is driven to intermittently rotate by the driving mechanism under the driving of the motor, so that the first screen is driven to rotate, namely, the motor rotates to drive the rotating shaft to rotate for a certain angle and then is connected with the rotating shaft under the premise that the motor continues to rotate, the rotating shaft is not driven by the motor in the connecting neutral gear, at the moment, the side edge of the first screen is pulled back under the action of the tension spring, the motor is continuously connected with the rotating shaft to continuously drive the rotating shaft to rotate after being pulled back for a certain time, so that the two sides of the first screen move up and down like a seesaw, the sand and stone on the surface of the first screen roll back and forth on the surface of the first screen, the mesh is prevented from being blocked by large-particle sand and stone, the effect of primary screening is ensured, the sand and stone through the connecting, make the second screen cloth vibrate from top to bottom under the effect of spring, guarantee the effect of second grade screening, make the rotation of first screen cloth and the upper and lower vibration of second screen cloth go on in step after the motor starts, carry out multistage screening to the grit through the device, and the maximize of product quality and acquisition product quantity after the dynamic screening process guarantees the screening.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view structural section of the present invention.

Fig. 3 is a side view of the structure of the present invention.

Fig. 4 is a top view structural diagram of the second screen of the present invention.

Fig. 5 is an enlarged view of a portion a of fig. 1 according to the present invention.

Reference numerals shown in the drawings:

1. a box body; 2. a feed inlet; 3. a discharge port; 4. a rotating shaft; 5. a first screen; 6. a tension spring; 7. a second screen; 8. a spring; 9. a connecting shaft; 10. a striking rod; 11. a motor; 12. supporting legs; 13. a driving gear; 14. a driven gear; 15. a transmission belt; 16. a stopper; 17. and (6) guiding the flow to slope.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

The utility model relates to a civil engineering sand sieving machine, the major structure includes box 1, box 1 top is equipped with feed inlet 2, the grit raw materials gets into box 1 from feed inlet 2, box 1 bottom is funnel-shaped and is equipped with discharge gate 3, and the grit finished product after the screening spills from discharge gate 3, places the collecting box in discharge gate 3 bottom and collects the finished product, be equipped with pivot 4 in the box 1 near feed inlet 2 department, fixed being equipped with first screen cloth 5 on the pivot 4, pivot 4 runs through the intermediate position of first screen cloth 5, drives first screen cloth 5 through pivot 4 and rotates so that the both sides of first screen cloth 5 make the back and forth and up and down swing like the seesaw, be connected with extension spring 6 between one side activity side of first screen cloth 5 and the box 1 inner wall, when one side that first screen cloth 5 is connected with extension spring 6 moves in the opposite direction to extension spring 6, extension spring 6 is elongated and is produced the resilience force, when the motor 11 is disconnected with the rotating shaft 4 for a short time through the transmission mechanism, the tension spring 6 pulls one side of the first screen 5 to move back, then the motor 11 is connected with the rotating shaft 4 again through the transmission mechanism, the side is enabled to continue to move in the opposite direction of the tension spring 6, the two sides of the first screen 5 swing up and down like a seesaw, so that the gravels on the surface of the first screen 5 roll back and forth, large-particle gravels are prevented from blocking meshes, the screening effect of the first screen 5 is ensured, the second screen 7 is arranged in the box body 1 and at the bottom of the first screen 5, the aperture of the second screen 7 is smaller than that of the first screen 5, the gravels screened by the first screen 5 are screened more finely, the qualification rate of the final product is ensured, springs 8 are connected between the four corners of the second screen 7 and the inner wall of the box body 1, namely, the second screen 7 is fixedly installed on the inner wall of the box body 1, and a gap is left between the side edge of the second screen 7 and the inner wall of the box body 1, a moving space is left for the vibration of the second screen 7, a connecting shaft 9 penetrating through the side wall of the box body 1 is arranged on one side of the box body 1, the connecting shaft 9 is arranged on the inner wall of the box body 1 through a bearing, so that the connecting shaft 9 can be rotatably arranged on the wall of the box body 1, a beating rod 10 is arranged at one end of the connecting shaft 9 positioned in the box body 1, the distance from the beating end of the beating rod 10 to the axle center of the connecting shaft 9 is greater than the distance from the bottom surface of the second screen 7 to the axle center of the connecting shaft 9, the beating rod 10 can be fixed with the end surface of the connecting shaft 9 at one end or the middle part, the beating frequency of the beating rod is lower than that of the connecting shaft 9, the installation mode can be selected according to the actual situation, the vibration frequency of the second screen 7 is reasonably, drive connecting axle 9 through motor 11 and rotate the regular second screen cloth 7 of hitting of tip that drives and hit pole 10, make the vibration of second screen cloth 7 under the effect of spring 8, prevent that large granule grit from blockking up the mesh, obtain the maximize of finished product quantity after guaranteeing to sieve, 4 one ends of pivot run through 1 lateral wall of box and are equipped with drive mechanism, motor 11 passes through 4 intermittent rotations of drive mechanism drive pivot, and temporary disconnection can appear in being connected between drive mechanism and the pivot 4 under motor 11 lasts the moving state promptly, realizes 4 intermittent rotations of motor 11 drive pivot, 1 bottom of the box is equipped with supporting leg 12.

Preferably, the transmission mechanism comprises a driving gear 13 and a driven gear 14, the driven gear 14 is fixed at one end of the rotating shaft 4 penetrating through the box body 1, the outer wall of the box body 1 is also provided with a fixed shaft which is rotatably connected with the box body 1 through a bearing, the driving gear 13 is connected with the fixed shaft and engaged with the driven gear 14, the teeth of the driving gear 13 are partially lost, that is, there is a smooth circumferential surface with a part of radian being toothless in the teeth of the whole excircle of the driving gear 13, because there is a part of teeth missing in the driving gear 13, there will be a condition that the driven gear 14 is not driven by the driving gear 13 for a while in the process of gear transmission, the motor 11 drives the rotating shaft 4 to rotate intermittently, the normal realization of the structural function of the first screen 5 is ensured, a transmission belt 15 is connected between the driving gear 13 and the motor 11, so that the striking rod 10 and the rotating shaft 4 are driven to rotate intermittently when the motor 11 is started.

Preferably, be equipped with dog 16 on the 1 inner wall of box at first screen cloth 5 both sides, the opposite face of dog 16 is the arcwall face, and the radian of arcwall face is concentric with the radian of first screen cloth 5 both sides luffing motion, and the side laminating of arcwall face and first screen cloth 5, and the grit leaks down from the space between first screen cloth 5 side and the 1 inner wall of box when preventing first screen cloth 5 luffing motion, guarantees first screen cloth 5's screening effect, the one end that first screen cloth 5 was kept away from to extension spring 6 is fixed on one side dog 16's bottom surface.

Preferably, the top of the block 16 is provided with a guide slope 17 inclined towards the first screen 5, so that sand and stone are prevented from falling to the surface of the block 16 and then blocked by the block 16, and the maximization of the obtained product quantity is ensured.

Preferably, the bottom surface width of water conservancy diversion slope 17 is greater than the surface width of dog 16, plays the effect that the first screen cloth 5 of check stop, prevents that first screen cloth 5 from leading to the grit to drop because of the excessive swing of inertia at the in-process of luffing motion, avoids leading to because of the excessive slope of first screen cloth 5 all, further guarantees the screening effect.

Starting motor 11, pour the grit into box 1 from feed inlet 2, motor 11 drive connecting axle 9 rotates and drives and hit pole 10 and hit second screen cloth 7 bottom, drive driving gear 13 through drive belt 15 simultaneously and rotate, thereby driving gear 13 drives driven gear 14 and rotates and make pivot 4 drive first screen cloth 5 and rotate, because driving gear 13 has some tooth disappearance, can make the transmission connect the brief disconnection that appears, extension spring 6 just stimulates first screen cloth 5 antiport when the disconnection, later the transmission is connected again, make the both sides of first screen cloth 5 swing from top to bottom repeatedly, the grit spills and collects from discharge gate 3 after sieving through wobbling first screen cloth 5 and vibrating second screen cloth 7, carry out multistage screening and prevent that large granule grit from blockking up the screen cloth through the device, guarantee the screening effect.

Claims

1. The utility model provides a civil engineering sand sieving machine which characterized in that: comprises a box body (1), a feed inlet (2) is arranged at the top of the box body (1), a discharge outlet (3) is arranged at the bottom of the box body (1), a rotating shaft (4) is arranged at a position close to the feed inlet (2) in the box body (1), a first screen (5) is fixedly arranged on the rotating shaft (4), a tension spring (6) is connected between one side of the first screen (5) and the inner wall of the box body (1), a second screen (7) is arranged in the box body (1) and at the bottom of the first screen (5), a spring (8) is connected between the four corners of the second screen (7) and the inner wall of the box body (1), a connecting shaft (9) penetrating through the side wall of the box body (1) is arranged at one side of the box body (1), a striking rod (10) is arranged at one end of the connecting shaft (9) positioned in the box body (1), the striking rod (10) is positioned at the bottom of the second screen (7), a, one end of the rotating shaft (4) penetrates through the side wall of the box body (1) to be provided with a transmission mechanism, the motor (11) drives the rotating shaft (4) to rotate discontinuously through the transmission mechanism, and supporting legs (12) are arranged at the bottom of the box body (1).

2. The civil engineering sand screening machine of claim 1, wherein: drive mechanism includes driving gear (13) and driven gear (14), driven gear (14) are fixed in pivot (4) one end of running through box (1), driving gear (13) rotate set up on box (1) lateral wall and with driven gear (14) meshing, the tooth of driving gear (13) has the part disappearance, be connected with drive belt (15) between driving gear (13) and motor (11).

3. The civil engineering sand screening machine of claim 1, wherein: be equipped with dog (16) on the box (1) inner wall of first screen cloth (5) both sides, the opposite face of dog (16) is the arcwall face, the one end that first screen cloth (5) were kept away from in extension spring (6) is fixed on the bottom surface of one side dog (16).

4. The civil engineering sand screening machine of claim 3, wherein: and a flow guide slope (17) inclined towards the first screen (5) is arranged at the top of the stop block (16).

5. The civil engineering sand screening machine of claim 4, wherein: the width of the bottom surface of the flow guiding slope (17) is larger than the width of the surface of the stop block (16).