Screening mechanism for engineering plastic cooling screening machine
Technical Field
The utility model relates to an engineering plastics makes technical field, specifically is a screening mechanism for engineering plastics cooling sieve separator.
Background
Plastics are one of the most common materials in production and life, and the plastics are required to be granulated in the fields of construction and the like, and after granular plastic granules are obtained in a granulator according to required specifications, the plastic granules are cooled, screened and the like through a cooling screening machine, wherein the design of a screening mechanism influences the final granule outlet quality, and many screening mechanisms in the cooling screening machine on the market have the defects of poor screening effect, unstable vibration, uneven feeding and the like.
In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved:
(1) the traditional screening mechanism for the engineering plastic cooling screening machine cannot carry out double screening, and the screening effect is poor;
(2) when the traditional screening mechanism for the engineering plastic cooling screening machine is used for screening, parts are easy to abrade due to vibration collision;
(3) the traditional screening mechanism for the engineering plastic cooling screening machine has uneven feeding and over-high falling speed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a screening mechanism for engineering plastics cooling sieve separator to propose in solving above-mentioned background art and can't carry out the multistage screening, filter the not good problem of effect.
In order to achieve the above object, the utility model provides a following technical scheme: a screening mechanism for engineering plastics cooling sieve separator, including first screening room and second screening room, be provided with the baffle between first screening room and the second screening room, one side on first screening room top is provided with at the uniform velocity feed mechanism, the bottom of second screening room opposite side is provided with the discharge gate, the inside of first screening room is provided with first sieve, the inside of second screening room is provided with the second sieve, one side of first sieve and the opposite side of second sieve are provided with the sieve and move the mechanism, the inside of first screening room and second screening room is provided with the collection structure.
Preferably, the collecting structure comprises a first collecting box, the first collecting box is arranged at the bottom end of the first sieve plate, a first guide plate is arranged on the other side of the first sieve plate, a second collecting box is arranged at the bottom end of the second sieve plate, and a second guide plate is arranged on the other side of the second sieve plate.
Preferably, the inside intermediate position department of baffle is provided with the guide way, first deflector runs through the inside of guide way and extends to the top of second sieve, first sieve and second sieve are 30 with the horizontal angle, the density of the inside sieve mesh of first sieve is less than the second sieve.
Preferably, the sieve moving mechanism comprises first driving motor, eccentric block, eccentric shaft, fixing base, loose axle, fixed sleeve and loose ring, the fixing base sets up the both sides on first sieve and second sieve top respectively, the inside fixedly connected with fixed sleeve of fixing base, fixed sleeve's inside is provided with the loose axle, the bottom of loose axle is provided with the eccentric block, one side of eccentric block is provided with the eccentric shaft, first driving motor sets up the opposite side at one side of first screening chamber and second screening chamber respectively, shaft coupling and eccentric block fixed connection are passed through to first driving motor's output, be provided with the loose ring between the bottom of loose axle and the eccentric shaft, loose ring and loose axle swing joint, loose ring and eccentric shaft fixed connection.
Preferably, the eccentric shaft is respectively and fixedly connected with the first sieve plate and the second sieve plate, and the horizontal position of the eccentric shaft on one side of the first sieve plate is higher than that of the eccentric shaft on the other side of the first sieve plate.
Preferably, at the uniform velocity feed mechanism comprises mount, second driving motor, spiral pivot and feed inlet, the feed inlet sets up the one side on first screening room top, the top fixedly connected with mount of feed inlet, the top fixedly connected with second driving motor of mount, shaft coupling fixedly connected with spiral pivot is passed through to second driving motor's output.
Preferably, the cross section of the feed inlet is in an inverted trapezoid shape.
Compared with the prior art, the beneficial effects of the utility model are that: the screening mechanism for the engineering plastic cooling screening machine not only realizes double screening and stable vibration, but also realizes uniform feeding;
(1) by arranging the first screening chamber, the first sieve plate, the first collecting box, the first guide plate, the second screening chamber, the second sieve plate, the second collecting box, the second guide plate and the discharge hole, plastic particles fall into the top end of the first sieve plate from the feed hole and roll along the inclined direction of the first sieve plate, the first sieve plate continuously vibrates, unqualified particles which are hardly granulated fall into the first collecting box from the inner pores of the first sieve plate, the rest particles are guided into the top end of the second sieve plate from the first guide plate, a part of particles with small particle sizes fall into the second collecting box through the pores of the second sieve plate, and the rest of qualified particles are guided into the discharge hole along the second guide plate and enter the external processing device, so that double screening is realized, and plastic particles with different particle sizes respectively enter different collecting devices and are screened more finely;
(2) the first driving motor is started through the arrangement of the first driving motor, the eccentric block, the eccentric shaft, the fixed seat, the movable shaft, the fixed sleeve and the movable ring, the output end of the first driving motor drives the eccentric block to rotate through the coupler, the eccentric shaft on one side of the eccentric block performs circular motion in the vertical direction, when the eccentric shaft moves upwards, the movable shaft moves upwards in the fixed sleeve, and when the eccentric shaft moves downwards, the movable shaft moves downwards in the fixed sleeve, so that the first sieve plate and the second sieve plate are driven to continuously vibrate in a small amplitude, the structure is compact, the vibration is more stable, and the abrasion is small;
(3) through being provided with the mount, second driving motor, spiral pivot and feed inlet, plastic granules after the cooling screening machine cooling gets into the feed inlet, starts second driving motor, and second driving motor's output passes through the shaft coupling and drives the spiral pivot of fixing in the mount bottom rotatory, and the epaxial helical blade of spiral pivot is drawn into plastic granules and is made its rotatory whereabouts, can control the feeding volume at the uniform velocity like this, avoids the uneven production of feeding to first sieve to strike, block up the feed inlet.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
FIG. 2 is a schematic structural view of a sieving mechanism of the present invention;
FIG. 3 is a schematic side view of the movable ring of the present invention;
fig. 4 is a schematic view of the bottom view of the fixing frame of the present invention.
In the figure: 1. a first screening chamber; 2. a screen moving mechanism; 201. a first drive motor; 202. an eccentric block; 203. an eccentric shaft; 204. a fixed seat; 205. a movable shaft; 206. fixing the sleeve; 207. a movable ring; 3. a uniform feeding mechanism; 301. a fixed mount; 302. a second drive motor; 303. a helical shaft; 304. a feed inlet; 4. a partition plate; 5. a second screening chamber; 6. a discharge port; 7. a second guide plate; 8. a second collection tank; 9. a second screen deck; 10. a first guide plate; 11. a first collection tank; 12. a first screen deck.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: referring to fig. 1-4, the screening mechanism for the engineering plastic cooling screening machine comprises a first screening chamber 1 and a second screening chamber 5, a partition plate 4 is arranged between the first screening chamber 1 and the second screening chamber 5, a constant-speed feeding mechanism 3 is arranged on one side of the top end of the first screening chamber 1, a discharge port 6 is arranged on the bottom end of the other side of the second screening chamber 5, a first sieve plate 12 is arranged inside the first screening chamber 1, a second sieve plate 9 is arranged inside the second screening chamber 5, a screening mechanism 2 is arranged on one side of the first sieve plate 12 and the other side of the second sieve plate 9, and a collecting structure is arranged inside the first screening chamber 1 and the second screening chamber 5;
referring to fig. 1-4, the screening mechanism for the engineering plastic cooling screening machine further includes a collecting structure, the collecting structure includes a first collecting box 11, the first collecting box 11 is disposed at the bottom end of a first screen plate 12, a first guide plate 10 is disposed at the other side of the first screen plate 12, a second collecting box 8 is disposed at the bottom end of a second screen plate 9, and a second guide plate 7 is disposed at the other side of the second screen plate 9;
a guide groove is formed in the middle position inside the partition plate 4, the first guide plate 10 penetrates through the guide groove and extends to the top end of the second sieve plate 9, the included angle between the first sieve plate 12 and the horizontal plane of the second sieve plate 9 is 30 degrees, and the density of sieve pores inside the first sieve plate 12 is smaller than that of the second sieve plate 9;
specifically, as shown in fig. 1, plastic granules fall into the top end of a first sieve plate 12 from a feeding hole 304 and then roll along the inclined direction of the first sieve plate 12, the first sieve plate 12 continuously vibrates, unqualified granules which are hardly granulated fall into a first collecting box 11 from the inner pores of the first sieve plate 12, the rest granules are guided into the top end of a second sieve plate 9 by a first guide plate 10, a part of granules with small particle diameters fall into a second collecting box 8 through the gaps of the second sieve plate 9, the rest qualified granules are guided into a discharging hole 6 along a second guide plate 7 and enter an external processing device, so that double screening is realized, plastic granules with different particle diameters respectively enter different collecting devices, and the screening is finer.
Example 2: the sieving mechanism 2 is composed of a first driving motor 201, an eccentric block 202, an eccentric shaft 203, a fixed seat 204, a movable shaft 205, a fixed sleeve 206 and a movable ring 207, the fixed seats 204 are respectively arranged at two sides of the top ends of the first sieve plate 12 and the second sieve plate 9, the fixed sleeves 206 are fixedly connected inside the fixed seats 204, the movable shafts 205 are arranged inside the fixed sleeves 206, the eccentric blocks 202 are arranged at the bottom ends of the movable shafts 205, the eccentric shafts 203 are arranged at one sides of the eccentric blocks 202, the first driving motors 201 are respectively arranged at one side of the first sieving chamber 1 and the other side of the second sieving chamber 5, the types of the first driving motors 201 can be Y90S-2, the output ends of the first driving motors 201 are fixedly connected with the eccentric blocks 202 through couplers, movable rings 207 are arranged between the bottom ends of the movable shafts 205 and the eccentric shafts 203, the movable rings 207 are movably connected with the movable shafts 205, and the movable rings 207 are fixedly connected with the eccentric shafts 203;
the eccentric shaft 203 is fixedly connected with the first sieve plate 12 and the second sieve plate 9 respectively, and the horizontal position of the eccentric shaft 203 on one side of the first sieve plate 12 is higher than that of the eccentric shaft 203 on the other side of the first sieve plate 12;
specifically, as shown in fig. 1, fig. 2 and fig. 3, the output end of the first driving motor 201 drives the eccentric mass 202 to rotate through the coupling, the eccentric shaft 203 on one side of the eccentric mass 202 performs a circular motion in a vertical direction, when the eccentric shaft 203 moves upward, the movable shaft 205 moves upward inside the fixed sleeve 206, and when the eccentric shaft 203 moves downward, the movable shaft 205 moves downward inside the fixed sleeve 206, so as to drive the first screen plate 12 and the second screen plate 9 to vibrate continuously with a small amplitude, which is compact in structure, more stable in vibration and less in wear.
Example 3: the uniform-speed feeding mechanism 3 comprises a fixed frame 301, a second driving motor 302, a spiral rotating shaft 303 and a feeding hole 304, wherein the feeding hole 304 is arranged at one side of the top end of the first screening chamber 1, the fixed frame 301 is fixedly connected to the top end of the feeding hole 304, the second driving motor 302 is fixedly connected to the top end of the fixed frame 301, the model of the second driving motor 302 can be 790S-6, and the output end of the second driving motor 302 is fixedly connected with the spiral rotating shaft 303 through a coupler;
the cross section of the feed inlet 304 is in an inverted trapezoid shape;
specifically, as shown in fig. 1 and 4, the plastic particles cooled by the cooling and screening machine enter the feed inlet 304, the second driving motor 302 is started, the output end of the second driving motor 302 drives the spiral rotating shaft 303 fixed at the bottom end of the fixed frame 301 to rotate through the coupler, and the spiral blades on the spiral rotating shaft 303 roll the plastic particles into the plastic particles to make the plastic particles fall down in a rotating manner, so that the feeding amount can be controlled at a uniform speed, and the first sieve plate 12 is prevented from being impacted and blocking the feed inlet 304 due to uneven feeding.
The working principle is as follows: the utility model discloses when using, at first, plastic granules rolls along first sieve 12 incline direction after falling into first sieve 12 top by feed inlet 304, first sieve 12 constantly vibrates, the unqualified granule of hardly granulating falls from the inside hole of first sieve 12 and gets into first collecting box 11, all the other granules are by the leading-in second sieve 9 top of first deflector 10, the granule of some small particle diameters falls into second collecting box 8 through the space of second sieve 9, all the other qualified granules are along the leading-in discharge gate 6 of second deflector 7, get into outside processingequipment, thus just realized dual screening, the plastic granules of different particle diameters get into respectively in the different collection device, the screening is more meticulous.
Then, the output end of the first driving motor 201 drives the eccentric block 202 to rotate through the coupling, the eccentric shaft 203 on one side of the eccentric block 202 makes a circular motion in the vertical direction, when the eccentric shaft 203 moves upwards, the movable shaft 205 moves upwards in the fixed sleeve 206, and when the eccentric shaft 203 moves downwards, the movable shaft 205 moves downwards in the fixed sleeve 206, so that the first sieve plate 12 and the second sieve plate 9 are driven to continuously vibrate in a small amplitude, the structure is compact, the vibration is more stable, and the abrasion is small.
Finally, the plastic particles cooled by the cooling and screening machine enter the feed inlet 304, the second driving motor 302 is started, the output end of the second driving motor 302 drives the spiral rotating shaft 303 fixed at the bottom end of the fixing frame 301 to rotate through the coupler, and the spiral blades on the spiral rotating shaft 303 roll the plastic particles into the plastic particles to enable the plastic particles to fall down in a rotating manner, so that the feeding amount can be controlled at a constant speed, and the phenomenon that the first sieve plate 12 is impacted and the feed inlet 304 is blocked due to uneven feeding is avoided.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.