CN209829545U - Electric screening machine - Google Patents

Abstract

The utility model relates to the technical field of screening equipment, in particular to an electric screening machine, which comprises a frame, a screening box and a driving mechanism; the driving mechanism comprises an inner gear ring, a planet wheel driving motor, a planet carrier, a first connecting rod, a second connecting rod and an inner gear ring adjusting mechanism; the inner gear ring is installed on the frame through the inner gear ring adjusting mechanism; the pitch circle radius of the planet gears is equal to 1/2 of the pitch circle radius of the inner gear ring; first connecting rod and planet wheel fixed connection, the one end of second connecting rod passes through first connecting axle and first connecting rod pin joint, and the axis of first connecting axle is located the pitch circle of planet wheel, and the other end of second connecting rod passes through second connecting axle and sieve case pin joint. The utility model discloses can improve screening efficiency according to the vertical range of movement of the convenient, swift adjustment screen cloth of proportion, adhesion force, void ratio of different types of material.

Description

Electric screening machine

Technical Field

The utility model relates to a screening equipment technical field specifically is an electric screening machine.

Background

Electric screening machine is used for sieving granule or powdered material, and current electric screening machine includes frame, sieve case and vibration mechanism, and the sieve case passes through the spring mounting in the frame, installs the screen cloth on the sieve case, and vibration mechanism generally is vibrating motor or vibration exciter, and vibration mechanism makes the vibration of sieve case during the screening, and the material of sieve incasement is thrown, falls down by continuous to being dispersed by shaking, the material that satisfies the particle diameter requirement passes through the screen cloth and falls down, and the sieve sediment is stayed on the screen cloth. The existing electric sieving machine has the following defects: the specific gravity, the binding power, the void ratio and the like of different types of materials (or materials in different states) are different, and a screen with a single amplitude cannot meet the requirements of screening operation, for example, when the specific gravity of a material is small, the inertia of the material is small, so that the material needs to be thrown higher due to a large amplitude, or when the binding power of the material is large, the material needs to be thrown higher due to a large amplitude to be sufficiently crushed, and if the specific gravity of the material is large or the binding power of the material is small, the amplitude needs to be reduced in order to reduce the damage of raised dust, noise and large exciting force to equipment. In the prior art, when the amplitude is adjusted, if the vibration exciter is used, the weight of the eccentric block needs to be increased (the auxiliary eccentric is increased), and if the vibration motor is used, the included angle of the eccentric blocks at the two ends of the motor shaft needs to be adjusted, and the included angle is larger, the smaller the amplitude is, and vice versa. Therefore, the mode of adjusting the amplitude of the screen in the prior art is complex to operate, and the screening efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned prior art not enough, provide an electric screening machine, can improve screening efficiency according to the vertical range of movement of the convenient, swift adjustment screen cloth of proportion, adhesion, the void fraction of different types of material.

The utility model discloses the technical problem that will solve adopts following technical scheme to realize: an electric sieving machine comprises a frame, a sieving box and a driving mechanism; the screen box is vertically and slidably arranged on the rack, a screen plate is arranged on the screen box, a screen is arranged on the screen plate, and the screen plate is obliquely arranged; the driving mechanism comprises an inner gear ring, a planet wheel driving motor, a planet carrier, a first connecting rod, a second connecting rod and an inner gear ring adjusting mechanism; the inner gear ring is mounted on the frame through an inner gear ring adjusting mechanism, and the inner gear ring adjusting mechanism can drive the inner gear ring to rotate; the planet gear is meshed with the inner gear ring, the pitch circle radius of the planet gear is equal to 1/2 of the pitch circle radius of the inner gear ring, and the planet gear driving motor is mounted on the rack and can drive the planet gear to roll along the inner gear ring through the planet carrier; the first connecting rod is fixedly connected with the planet wheel, one end of the second connecting rod is pivoted with the first connecting rod through a first connecting shaft, the axis of the first connecting shaft is located on the pitch circle of the planet wheel, and the other end of the second connecting rod is pivoted with the screen box through a second connecting shaft.

The technical proposal of the utility model is also that: the inner gear ring adjusting mechanism comprises a worm wheel, a worm and a worm driving motor; the worm wheel and the worm are both arranged on the rack, the worm is meshed with the worm wheel, and the worm driving motor is arranged on the rack and connected with the worm; the inner gear ring is coaxially and fixedly connected with the worm wheel.

The technical proposal of the utility model is also that: a finished plate is also arranged on the sieve box, is positioned below the sieve plate and is obliquely arranged; the driving mechanism is positioned below the screen box. Adopt this technical scheme, the finished product board that the slope set up can be derived the finished product after the screening from the lateral part, consequently can establish actuating mechanism in the below of sieve case, prevents that actuating mechanism from leading to sieve case wearing and tearing or even card when vertical slip is died because of the biasing to the drive power of sieve case.

The technical proposal of the utility model is also that: the included angle between the sieve plate or the finished plate and the horizontal plane is 3-10 degrees.

The technical proposal of the utility model is also that: and the axis of the second connecting shaft and the axis of the inner gear ring are positioned on the same vertical plane.

The technical proposal of the utility model is also that: and a guide shaft is fixedly arranged on the screen box and is in sliding fit with the rack.

Compared with the prior art, the utility model discloses electric screening machine's beneficial effect does: because the pitch circle radius of planet wheel equals the radial 1/2 of pitch circle of ring gear, when the planet wheel rolled along the ring gear, the point that lies in on the planet wheel pitch circle was linear motion, therefore, the motion trail of first connecting axle is for passing the straightway of ring gear axle center and the length of this straightway is the four times of planet wheel pitch circle radius, when the vertical moving range of sieve case was adjusted to needs, it is rotatory in order to drive the worm wheel to rotate the worm, the worm wheel drives the ring gear rotatory, the ring gear drives the planet wheel rotation, can change the degree of inclination of the motion trail of first connecting axle, can realize the change of sieve case vertical moving range, it is visible, the utility model discloses an electric screening machine can be according to the proportion of different kinds of material, the adhesion strength, the void fraction is convenient, the vertical moving range of swift adjustment screen cloth.

Drawings

Fig. 1 is a perspective view of an electric screening machine according to a first embodiment.

Figure 2 is a main sectional view of an electric screening machine in the first embodiment.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a sectional view taken along line B-B in fig. 3.

Fig. 5 is a partially enlarged view of a portion C in fig. 4.

FIG. 6 is a perspective view of a driving mechanism according to a first embodiment.

Figure 7 is a main sectional view of the electric screening machine in the second embodiment.

Fig. 8 is a partially enlarged view of a portion D in fig. 7.

Figure 9 is a main sectional view of the electric screening machine in the third embodiment.

Fig. 10 is a partially enlarged view of a portion E in fig. 7.

In the figure: 1. the screen box comprises a rack, 2, a screen box, 3, a screen plate, 4, a screen mesh, 5, an inner gear ring, 6, a planet wheel, 7, a planet wheel driving motor, 8, a planet carrier, 9, a first connecting rod, 10, a second connecting rod, 11, a first connecting shaft, 12, a second connecting shaft, 13, a worm wheel, 14, a worm, 15, a worm driving motor, 16, a finished plate, 17, a guide shaft, 18, a first connecting shaft motion track, 19 and screen box moving amplitude.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the following further describes the embodiments of the present invention with reference to the attached drawings.

Example one

As shown in fig. 1 to 6, an electric screening machine includes a frame 1, a screen box 2, and a driving mechanism.

As shown in fig. 2, the screen box 2 is vertically slidably mounted on the frame 1, and specifically, the screen box 2 is fixedly provided with a guide shaft 17, and the guide shaft 17 is slidably engaged with the frame 1. The sieve box 2 is provided with a sieve plate 3 and a finished plate 16. Install screen cloth 4 on the sieve 3, the sieve 3 is the slope setting of height on the low right side in a left side and is 3 with the contained angle of horizontal plane, and the left end of sieve 3 is the discharge end. The finished plate 16 is positioned below the sieve plate 3, the finished plate 16 is obliquely arranged in a left-high-right direction, and has an included angle of 3 degrees with the horizontal plane, and the right end of the finished plate 16 is a discharge end.

The driving mechanism is located below the screen box 2, and as shown in fig. 3, 5 and 6, the driving mechanism includes an inner gear ring 5, a planetary gear 6, a planetary gear driving motor 7, a planetary carrier 8, a first connecting rod 9, a second connecting rod 10 and an inner gear ring adjusting mechanism. The inner gear ring 5 is mounted on the frame 1 through an inner gear ring adjusting mechanism, the inner gear ring adjusting mechanism can drive the inner gear ring 5 to rotate, and specifically, the inner gear ring adjusting mechanism comprises a worm wheel 13, a worm 14 and a worm driving motor 15. Both the worm wheel 13 and the worm 14 are mounted on the frame 1, and as shown in fig. 5, the worm wheel 13 is cylindrical, and the worm 14 meshes with the worm wheel 13. The worm driving motor 15 is installed on the frame 1 and connected with the worm 14, and the worm driving motor 15 is a stepping motor. The inner gear ring 5 is coaxially and fixedly connected with the worm wheel 13.

The planet wheels 6 are meshed with the inner gear ring 5, and the pitch circle radius of the planet wheels 6 is equal to 1/2 of the pitch circle radius of the inner gear ring 5. Planet wheel drive motor 7 installs in frame 1 and can pass through planet carrier 8 drive planet wheel 6 and roll along ring gear 5, specifically, planet carrier 8's one end and planet wheel drive motor 7's output shaft key-type connection, the other end and planet wheel 6 pin joint. The first connecting rod 9 is fixedly connected with the planet wheel 6, one end of the second connecting rod 10 is pivoted with the first connecting rod 9 through a first connecting shaft 11, and the axis of the first connecting shaft 11 is positioned on the pitch circle of the planet wheel 6. The other end of the second connecting rod 10 is pivoted with the screen box 2 through a second connecting shaft 12, and the axis of the second connecting shaft 12 and the axis of the inner gear ring 5 are located on the same vertical plane.

The working process of the electric screening machine in the first embodiment is as follows: the material is placed in the screen box 2, as shown in fig. 2, with the electric screening machine in a state of maximum vertical movement and the screen box 2 in an upper limit position. Assuming that the pitch circle radius of the planet wheel 6 is R, and the distance between the first connecting shaft 11 and the second connecting shaft 12 is L, when the planet wheel driving motor 7 drives the planet wheel 6 to roll along the inner gear ring 5, the motion track of the first connecting shaft 11 is a vertical straight line passing through the axis of the inner gear ring 5 and the length of the straight line is 4R, that is, the movement amplitude 19 of the sieve box is 4R. The material is thrown continuously on the sieve plate 3 and then falls down, so that the material is shattered, and the finished product with the particle size meeting the requirement falls on the finished product plate 16 from the sieve 4. Meanwhile, the sieve plate is arranged at an angle of 3 degrees relative to the horizontal plane, the sieve slag gradually moves leftwards and is finally discharged from the left end of the sieve plate, and the screened qualified materials are discharged from the right end of the finished plate 16.

Example two

Fig. 7 and 8 show embodiment two of the utility model, as shown in the figure, for embodiment one, for reducing the vertical range of movement of sieve case 2, worm driving motor 15 of this embodiment drives worm 14 rotatory, and worm 14 drives worm wheel 13 rotatory, and worm wheel 13 drives ring gear 5 rotatory 22.5, and ring gear 5 drives planet wheel 6 rotation 45, has changed the degree of inclination of first connecting shaft motion trail 18.

EXAMPLE III

Fig. 9 and 10 show embodiment three of the utility model, as shown in the figure, for embodiment one, for reducing the vertical range of movement of sieve case 2, worm driving motor 15 of this embodiment drives worm 14 rotatory, and worm 14 drives worm wheel 13 rotatory, and worm wheel 13 drives ring gear 5 rotatory 90, and ring gear 5 drives planet wheel 6 rotation 180, has changed the degree of inclination of first connecting axle motion trail 18. The electric screening machine is in a state of minimum vertical movement amplitude and the screening box 2 is located at an upper limit position. The motion track 18 of the first connecting shaft is a horizontal straight line passing through the axis of the inner gear ring 5 and the length of the straight line is 4R, the vertical movement amplitude of the screen box 2 is

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (6)

1. An electronic screening machine which characterized in that: comprises a frame (1), a sieve box (2) and a driving mechanism; the screen box (2) is vertically and slidably mounted on the rack (1), a screen plate (3) is arranged on the screen box (2), a screen (4) is mounted on the screen plate (3), and the screen plate (3) is obliquely arranged; the driving mechanism comprises an inner gear ring (5), a planet wheel (6), a planet wheel driving motor (7), a planet carrier (8), a first connecting rod (9), a second connecting rod (10) and an inner gear ring adjusting mechanism; the inner gear ring (5) is mounted on the frame (1) through an inner gear ring adjusting mechanism, and the inner gear ring adjusting mechanism can drive the inner gear ring (5) to rotate; the planet gear (6) is meshed with the inner gear ring (5), the pitch circle radius of the planet gear (6) is equal to 1/2 of the pitch circle radius of the inner gear ring (5), and the planet gear driving motor (7) is installed on the rack (1) and can drive the planet gear (6) to roll along the inner gear ring (5) through the planet carrier (8); first connecting rod (9) and planet wheel (6) fixed connection, the one end of second connecting rod (10) is through first connecting axle (11) and first connecting rod (9) pin joint, the axis of first connecting axle (11) is located the pitch circle of planet wheel (6), the other end of second connecting rod (10) is through second connecting axle (12) and sieve case (2) pin joint.

2. The electronic screening machine of claim 1, wherein: the inner gear ring adjusting mechanism comprises a worm wheel (13), a worm (14) and a worm driving motor (15); the worm wheel (13) and the worm (14) are both arranged on the rack (1), the worm (14) is meshed with the worm wheel (13), and the worm driving motor (15) is arranged on the rack (1) and connected with the worm (14); the inner gear ring (5) is coaxially and fixedly connected with the worm wheel (13).

3. The electronic screening machine of claim 1, wherein: a finished plate (16) is further arranged on the sieve box (2), the finished plate (16) is positioned below the sieve plate (3), and the finished plate (16) is obliquely arranged; the driving mechanism is positioned below the screen box (2).

4. The electronic screening machine of claim 3, wherein: the included angle between the sieve plate (3) or the finished product plate (16) and the horizontal plane is 3-10 degrees.

5. The electric screening machine according to any one of claims 1 to 4, characterized in that: the axis of the second connecting shaft (12) and the axis of the inner gear ring (5) are located on the same vertical plane.

6. The electric screening machine according to any one of claims 1 to 4, characterized in that: and a guide shaft (17) is fixedly arranged on the screen box (2), and the guide shaft (17) is in sliding fit with the rack (1).