CN217474069U

CN217474069U - Double-shaft driven three-layer vibrating screen

Info

Publication number: CN217474069U
Application number: CN202220973064.XU
Authority: CN
Inventors: 林新周; 刘向坤; 李春强; 王哲
Original assignee: China Nuclear Construction Concrete Co ltd
Current assignee: China Nuclear Construction Concrete Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-09-23
Anticipated expiration: 2032-04-21

Abstract

The utility model discloses a double-shaft driven three-layer vibrating screen, which comprises a box body, three layers of screen meshes, a first eccentric shaft and a second eccentric shaft, a first motor and a second motor, wherein the box body is obliquely arranged, two sides of the box body are supported on a cross beam through spring seats; the diameter of the mesh of the upper layer screen is 10 mm; the diameter of the mesh of the middle layer screen is 5 mm; the mesh diameter of the lower screen is 3 mm. The utility model can sieve sand and stone with three specifications at one time, and has high screening efficiency; the vibrating screen can generate larger amplitude under the driving action of the double eccentric shafts, and the screening effect is improved.

Description

Double-shaft driven three-layer vibrating screen

Technical Field

The utility model relates to a shale shaker technical field, concretely relates to biax driven three-layer shale shaker.

Background

The existing vibrating screen used on the machine-made sand production line is generally a single-shaft single-layer screen vibrating screen, one production line can only screen out gravels of one specification, the screening efficiency is low, and the investment cost of screening equipment is high. The drive shaft of current multilayer shale shaker is single generally, if when being used for screening the grit with the shale shaker of current multilayer screen cloth, because grit weight is big, unipolar drive's multilayer shale shaker amplitude is little, and the screening effect is unsatisfactory.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a biax driven three-layer shale shaker.

The utility model discloses a first technical scheme be:

a double-shaft driven three-layer vibrating screen is characterized by comprising a box body, three layers of screen meshes, a first eccentric shaft, a second eccentric shaft and a first motor and a second motor, wherein the box body is obliquely arranged, two sides of the box body are supported on a cross beam through spring seats; the first eccentric shaft and the second eccentric shaft are rotatably arranged in the box body through bearing seats, the first eccentric shaft and the second eccentric shaft are identical in structure, two ends of the first eccentric shaft and the second eccentric shaft respectively extend out of two sides of the box body and are sequentially sleeved with a balance wheel and belt wheels, and the two belt wheels positioned on one side of the motor are respectively connected with the first motor and the second motor through a first belt and a second belt; the two belt wheels on the other side of the box body are connected through a third belt; the first motor and the second motor rotate in the same direction and rotate at the same speed.

Furthermore, three layers of screens are obliquely fixed in the box body in parallel, the front ends of the screens exceed the front side of the box body, and the diameter of the mesh of the upper layer of screen is 10 mm; the diameter of the mesh of the middle layer screen is 5 mm; the mesh diameter of the lower screen is 3 mm.

Further, a belt tensioning device is arranged on the third belt.

Furthermore, the belt tensioning device comprises a guide block fixed on the box body, a guide groove is formed in the guide block, a cylindrical pin is arranged in the guide groove, one end of the cylindrical pin is rotatably arranged in the guide groove through a bearing and can slide up and down along the guide groove, and the other end of the cylindrical pin is in frictional and rotational connection with the third belt; an adjusting screw rod is further arranged in the cylindrical pin guide groove, and the head of the adjusting screw rod abuts against the bearing outer ring to limit the cylindrical pin to slide upwards.

Furthermore, the first belt, the second belt and the third belt are toothed belts, and a belt wheel matched with the first belt, the second belt and the third belt is provided with a tooth form.

Furthermore, the spring seat comprises two double-layer cylindrical spiral springs which are arranged in parallel.

The utility model has the advantages that: through setting up first eccentric shaft and second eccentric shaft, make the shale shaker produce great amplitude under the biax drive effect, improve the screening effect. Through setting up the different screen cloth of three-layer specification, can once sieve out the grit of three kinds of specifications, the screening efficiency is high.

Drawings

Fig. 1 is a left side view of a biaxial-driven three-layer vibrating screen of example 1.

Fig. 2 is a right side view of a biaxial-driven three-layer vibrating screen of example 1.

Fig. 3 is a top view of a biaxially driven triple layer shaker of example 1.

Fig. 4 is a sectional view taken along a-a of fig. 1.

Fig. 5 is a schematic view showing the structure of a belt tensioner of a biaxial-driven triple-layer vibrating screen of embodiment 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.

Example 1

Referring to fig. 1 to 5, the present embodiment provides a double-shaft driven three-layer vibrating screen, which includes a box 10, a first eccentric shaft 20, a second eccentric shaft 30, a first motor 40, and a second motor 50.

The box body 10 is formed by connecting a rear side plate 11, a left side plate 12 and a right side plate 13, wherein the left side plate 12 and the right side plate 13 are parallel and incline downwards 22-26 degrees forwards from the back. An upper layer screen 14, a middle layer screen 15 and a lower layer screen 16 are sequentially arranged in the box body 10 from top to bottom. The upper layer screen 14, the middle layer screen 15 and the lower layer screen 16 are respectively connected with the rear side plate 11, the left side plate 12 and the right side plate 13 in a seamless mode through screws and pressing strips. The aperture of the upper layer screen 14 is 10mm, the aperture of the middle layer screen 15 is 5mm, and the aperture of the lower layer screen 16 is 3 mm. Preferably, the lower ends of the upper screen 14, the middle screen 5 and the lower screen 16 extend out of the front end surface of the box body 10, so that the material can be discharged conveniently.

The box body 10 is supported on the ground through the outlet ends of the left and right four upright posts 1 in an inclined manner, and the inlet opening of the box body is connected with the outlet opening of a crusher (not shown in the figure). During specific implementation, a crossbeam 2 is connected jointly on two stands 1 top of homonymy, and two supports of height are installed to crossbeam 2 top, respectively install a spring holder 3 on two supports of height, and both ends around left side board 12 and right side board 13 are fixed respectively to the upper end of spring holder 3, and the lower extreme is fixed on two supports of height. Preferably, the spring seat 3 comprises two double-layer cylindrical spiral springs arranged in parallel. The double-layered cylindrical coil spring includes an inner spring and an outer spring, and the wire diameter of the outer spring is greater than that of the inner spring, which is advantageous to more stably support the vibration of the case 10.

Two motor supports are further mounted on the cross beam 2 on one side of the box body 10, and the two motor supports are arranged between the two spring seats 3 and are respectively used for mounting the first motor 40 and the second motor 50.

The first eccentric shaft 20 and the second eccentric shaft 30 penetrate the left side plate 12 and the right side plate 13 between the middle screen 15 and the lower screen 16 in parallel, and are respectively connected with

balance wheels

21 and 31 and

belt wheels

22 and 32. The left and

right side plates

12 and 13 are provided with bearing housings for rotatably supporting the first and second

eccentric shafts

20 and 30, respectively. The two

pulleys

22, 32 located outside the right side plate 13 are connected by a third belt 43. The first eccentric shaft 20 passes through the belt pulley 22 at one end of the bearing seat of the left side plate 12 and is connected with the belt pulley of the first motor 20 through a first belt 41, and the second eccentric shaft 30 passes through the belt pulley 32 at one end of the bearing seat of the left side plate 12 and is connected with the belt pulley of the second motor 30 through a second belt 42. The first eccentric shaft 20 and the second eccentric shaft 30 have the same structure, the balance wheel 21 and the balance wheel 31 have the same structure, the belt wheel 22 and the belt wheel 32 have the same structure, and the first motor 40 and the second motor 50 have the same rotation direction and the same rotation speed. The first motor 40 and the second motor 50 rotate, the first eccentric shaft 20 and the second eccentric shaft 30 are driven to rotate by the first belt 41 and the second belt 42 respectively, and the first eccentric shaft 20 and the second eccentric shaft 30 are connected by the third belt 43 and generate excitation force together, so that the box body 10 vibrates greatly; big grit that the particle diameter is greater than 10mm is sieved to upper screen cloth 14, 5mm medium grit that the particle diameter is less than 10mm and is greater than is sieved to middle level screen cloth 15, 3mm little grit that the particle diameter is less than 5mm and is greater than is separated to lower floor's screen cloth 16, and the powder that the particle diameter is less than 3mm spills through the mesh of lower floor's screen cloth 16, and the grit of three kinds of specifications can be sieved simultaneously to a shale shaker, has greatly improved screening efficiency and screening effect.

Preferably, the first belt 41, the second belt 42 and the third belt 43 are all toothed belts, and the belt wheel 22 and the belt wheel 32 are provided with tooth shapes matched with the toothed belts, so that the belt is prevented from slipping, and the transmission efficiency is improved.

Preferably, the third belt 43 is provided with a belt tensioner 60. The belt tensioner 60 includes a guide block 61, a cylindrical pin 62, a bearing 63, and an adjustment screw 64. The guide block 61 is fixed at its upper end to the right side plate 13 by a screw and extends at its lower end toward the third belt 43. A T-shaped groove 611 is formed in the guide block 61 from top to bottom, a bearing 63 is sleeved at the tail of the cylindrical pin 62 to form a sliding assembly with the cylindrical pin, the sliding assembly is arranged in the T-shaped groove 611, and the head of the cylindrical pin extends out of the T-shaped groove 611 to be in frictional rotating connection with the third belt 43. The lower end of the adjusting screw 64 is screwed through the guide block 61 and extends downward along the T-shaped groove 611 against the bearing 63 to prevent the cylindrical pin 62 from sliding upward, thereby tensioning the third belt 43. The rotation position of the cylindrical pin 62 is adjusted by adjusting the length of the screw rod 64 extending out of the guide block 61, so that the tension of the belt is adjusted, and after the belt is adjusted in place, the screw rod 64 is fixed by the locking nut 65. The belt tensioning device 60 ensures the synchronous rotation effect of the first eccentric shaft 20 and the second eccentric shaft 30, and improves the screening effect of the vibrating screen.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.

Claims

1. A double-shaft driven three-layer vibrating screen is characterized by comprising a box body, three layers of screen meshes, a first eccentric shaft, a second eccentric shaft and a first motor and a second motor, wherein the two sides of the box body are supported on a cross beam through spring seats and are obliquely arranged; the first eccentric shaft and the second eccentric shaft are rotatably arranged in the box body through bearing seats, the first eccentric shaft and the second eccentric shaft are identical in structure, two ends of the first eccentric shaft and the second eccentric shaft respectively extend out of two sides of the box body and are sequentially sleeved with a balance wheel and belt wheels, and the two belt wheels positioned on one side of the motor are respectively connected with the first motor and the second motor through a first belt and a second belt; the two belt wheels on the other side of the box body are connected through a third belt; the first motor and the second motor have the same rotation direction and the same rotation speed.

2. The double-shaft-driven three-layer vibrating screen as claimed in claim 1, wherein the three layers of screen meshes are obliquely fixed in the box body in parallel, and the front ends of the screen meshes exceed the front side of the box body; the diameter of the mesh of the upper layer screen is 10 mm; the diameter of the mesh of the middle layer screen is 5 mm; the mesh diameter of the lower screen is 3 mm.

3. A twin shaft driven triple deck shaker as claimed in claim 1 in which the third belt is provided with belt tensioning means.

4. The biaxial-driven triple-layer vibrating screen of claim 1, wherein the belt tensioning device comprises a guide block fixed on the box body, a guide groove is formed in the guide block, a cylindrical pin is arranged in the guide groove, one end of the cylindrical pin is rotatably arranged in the guide groove through a bearing and can slide up and down along the guide groove, and the other end of the cylindrical pin is in frictional and rotational connection with a third belt; an adjusting screw rod is further arranged in the cylindrical pin guide groove, and the head of the adjusting screw rod abuts against the bearing outer ring to limit the cylindrical pin to slide upwards.

5. The biaxial-driven triple-layer vibrating screen of claim 1, wherein the first belt, the second belt and the third belt are toothed belts, and the belt wheels adapted to the first belt, the second belt and the third belt are provided with teeth.

6. A double-shaft driven triple deck vibrating screen as claimed in claim 1, wherein the spring seat includes two double-layered cylindrical coil springs arranged side by side.