CN105944953A - Efficient molding powder screening device - Google Patents

Abstract

The invention discloses an efficient molding powder screening device. The efficient molding powder screening device comprises a chassis, a feeding funnel, a first screening device, a first screening plate, a second screening device, a second screening plate, a driving wheel and a motor; multiple chutes are formed in the chassis; the first screening device and the second screening device are mounted in the chutes; a scraper is arranged in the first screening device; the section of the scraper is annular; multiple first scraping bars and second scraping bars are arranged on the inner wall of the scraper; the first screening plate is mounted below the first screening device; the second screening plate is mounted below the second screening device; multiple driving teeth are respectively arranged on the outer walls of the first screening device and the second screening device; the driving wheel is engaged with the driving teeth, and is mounted on the motor through a driving shaft; and multiple discharge hoppers are arranged on the outer wall of the chassis. The efficient molding powder screening device can obtain molding powder particles with relatively consistent sizes, can classify molding powder, and is simple in operation and high in screening efficiency.

Description

A high-efficiency plastic powder screening device

【Technical field】

The invention relates to auxiliary equipment for plastic powder production, in particular to the technical field of an efficient plastic powder screening device.

【Background technique】

Powder coating is a formula material based on synthetic resin with pigments and fillers. It is a new type of decorative material that has developed rapidly in recent years. It has the characteristics of energy saving, low pollution, high efficiency, and high performance. As a solvent-free coating, it has high coating efficiency, good anti-corrosion performance, one-time film formation, convenient storage and transportation, and is increasingly popular. Thermoplastic powder coatings are obtained from thermoplastic resins, pigments, fillers, plasticizers and stabilizers through dry mixing or melt mixing, pulverization, sieving and classification. In the production process of plastic powder, the method of grinding plastic sheets or granules to form plastic powder is generally adopted. Due to the limitation of equipment precision, the particle size of the plastic powder after grinding has a large error range. It has an important influence on the performance of the coating. In order to maintain good performance of the coating, the particle size of the plastic powder needs to be kept within a certain range, which requires grading equipment to screen and classify the plastic powder. Commonly used plastic powder grading equipment still has room for improvement in grading efficiency and grading accuracy. Now, a plastic powder screening device that is easy to use and has high screening efficiency is proposed.

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose a high-efficiency plastic powder screening device, which can screen and classify the plastic powder according to the size of the plastic powder particles, and obtain plastic powder particles with relatively uniform sizes, ensuring the powder coating the quality of.

In order to achieve the above object, the present invention proposes a high-efficiency plastic powder screening device, which includes a chassis, a feeding funnel, a first screening device, a first sieve plate, a second screening device, a second sieve plate, a driving wheel and a motor. A feeding funnel is provided above the case, and several chutes are provided in the case, the first screening device and the second screening device are installed in the chute, the first screening device is provided with a scraper, the The cross-sectional shape of the scraper is ring-shaped, and the inner wall of the scraper is provided with several first scraping bars and second scraping bars, the first screening device is located above the second screening device, and the bottom of the first screening device A first sieve plate is installed, and a second sieve plate is installed below the second screening device. The outer walls of the first screening device and the second screening device are provided with a number of driving teeth, and the driving wheels and the driving teeth In cooperation, the drive wheel is mounted on the motor through a drive shaft, and several discharge hoppers are arranged on the outer wall of the cabinet.

Preferably, the structure of the first screening device is the same as that of the second screening device, the cross-sectional shape of the first screening device is ring-shaped, the end of the first screening device is provided with a slide bar, and the cross-sectional shape of the slide bar is ring-shaped , the sliding bar is matched with the chute, the inner wall of the first screening device is provided with a slot, and the slot is matched with the scraper.

Preferably, the second scraping strips are evenly distributed around the circumference, the second scraping strips meet at the center of the scraping plate, the first scraping strips are located at the ends of the second scraping strips, and the first scraping strips and The second scraping bars are perpendicular to each other, the lower end surface of the second scraping bars is in close contact with the upper surface of the first sieve plate, and the outer wall of the scraper plate is provided with a locking block.

As a preference, the number of the outlet hoppers is three, and the outlet hoppers are provided with baffles.

Preferably, the first sieve plate is parallel to the second sieve plate, and the sieve hole diameter of the first sieve plate is larger than the sieve hole diameter of the second sieve plate.

As a preference, the bottom of the chassis is provided with a slide plate

Beneficial effects of the present invention: In the present invention, the first screening device, the first sieve plate, the second screening device, the second sieve plate, the driving wheel and the motor are used in combination, and the scraper in the screening device can ensure that the plastic powder Disperse on the sieve plate, and prevent the material from accumulating on the inner wall of the chassis, thereby ensuring the thorough screening of the plastic powder. The three hoppers screen out the plastic powder of large, medium and small sizes from top to bottom, and can classify the plastic powder. , simple operation and high screening efficiency.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is a schematic structural view of a high-efficiency plastic powder screening device of the present invention;

Fig. 2 is the front view of the first screening device of an efficient plastic powder screening device of the present invention;

Fig. 3 is a top view of the first screening device of an efficient plastic powder screening device of the present invention.

1-chassis, 2-feeding funnel, 3-first screening device, 4-first sieve plate, 5-second screening device, 6-second sieve plate, 7-driving wheel, 8-motor, 9-outlet hopper , 11-slider, 12-chute, 31-scraper, 32-slider, 33-slot, 34-drive tooth, 35-the first scraper, 71-drive shaft, 91-baffle, 311-the first Two scraping strips, 312-block.

【detailed description】

Referring to Fig. 1, Fig. 2 and Fig. 3, an efficient plastic powder screening device of the present invention includes a chassis 1, a feeding funnel 2, a first screening device 3, a first sieve plate 4, a second screening device 5, and a second sieve plate 6. The driving wheel 7 and the motor 8. A feeding funnel 2 is provided above the cabinet 1. Several chutes 12 are provided in the cabinet 1. The first screening device 3 and the second screening device 5 are installed in the chute 12, the first screening device 3 is provided with a scraper 31, the cross-sectional shape of the scraper 31 is ring-shaped, and the inner wall of the scraper 31 is provided with several first scrapers 35, the first screening The device 3 is positioned above the second screening device 5, the first screening plate 4 is installed below the first screening device 3, the second screening plate 6 is installed below the second screening device 5, and the first screening The outer walls of the device 3 and the second screening device 5 are provided with several driving teeth 34, the driving wheels 7 are matched with the driving teeth 34, the driving wheels 7 are installed on the motor 8 through the driving shaft 71, and the cabinet 1 Several discharge hoppers 9 are provided on the outer wall of the container. The structure of the first screening device 3 is the same as that of the second screening device 5, the cross-sectional shape of the first screening device 3 is annular, and the end of the first screening device 3 is provided with a slide bar 32, and the cross section of the slide bar 32 The shape is ring-shaped, and the sliding bar 32 is matched with the chute 12 , and the inner wall of the first screening device 3 is provided with a locking groove 33 , and the locking groove 33 is matched with the scraper 31 . The scraper 31 is provided with several second scrapers 311, the second scrapers 311 are evenly distributed around the circumference, the second scrapers 311 converge at the center of the scraper 31, and the first scrapers 35 is located at the end of the second scraping bar 311, the first scraping bar 35 and the second scraping bar 311 are perpendicular to each other, the lower end surface of the second scraping bar 311 is close to the upper surface of the first sieve plate 4, the Blocks 312 are provided on the outer wall of the scraper 31 . The number of said discharge hoppers 9 is three, and said discharge hoppers 9 are provided with baffles 91 . The first sieve plate 4 is parallel to the second sieve plate 6 , and the sieve aperture of the first sieve plate 4 is larger than the sieve aperture of the second sieve plate 6 . The bottom of the cabinet 1 is provided with a slide plate 11

Working process of the present invention:

In the working process of an efficient plastic powder screening device of the present invention, the plastic powder to be sorted is put into the feeding funnel 2, and the motor 8 cooperates with the drive shaft 71 to drive the drive wheel 7 to rotate, and the drive wheel 7 meshes with the drive gear 34 , the first screening device 3 and the second screening device 5 start to rotate, and at this time the scraper 31 in the screening device starts to rotate, and the first scraping bar 35 slides on the inner wall of the cabinet 1 to prevent plastic powder from accumulating on the inner wall of the cabinet 1, The screening is uneven. When the plastic powder falls on the first screening device 3, the plastic powder with a size larger than the mesh size of the first sieve plate 4 stays above the first sieve plate 4, and the second scraper 311 in the scraper 31 Rotating on the first sieve plate 4, driven by the second scraper 311, the plastic powder is evenly dispersed on the sieve plate to ensure uniform and thorough screening, and the plastic powder with a size smaller than the mesh size of the first sieve plate 4 falls to the second sieve plate On the second screening device 5, the plastic powder with the same size larger than the mesh size of the second sieve plate 6 stays above the second sieve plate 6, and the plastic powder with a size smaller than the mesh size of the second sieve plate 6 falls to the top of the slide plate 11 After the screening is completed, the upper baffles 91 of the hopper 9 are sequentially drawn out to obtain plastic powder particles of relatively uniform size, which can classify the plastic powder, and the operation is simple and the screening efficiency is high.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (6)

1. A high-efficiency plastic powder screening device, characterized in that it includes a chassis (1), a feeding funnel (2), a first screening device (3), a first sieve plate (4), and a second screening device (5) , the second sieve plate (6), driving wheel (7) and motor (8), the top of the cabinet (1) is provided with a feeding funnel (2), and several chutes (12) are provided in the cabinet (1) ), the first screening device (3) and the second screening device (5) are installed in the chute (12), the first screening device (3) is provided with a scraper (31), the scraper (31) has a circular cross-sectional shape, and the inner wall of the scraper (31) is provided with several first scraping bars (35) and second scraping bars (311), and the first screening device (3) is located at the second Above the screening device (5), a first sieve plate (4) is installed below the first screening device (3), and a second sieve plate (6) is installed below the second screening device (5), The outer walls of the first screening device (3) and the second screening device (5) are all provided with some driving teeth (34), and the driving wheel (7) is matched with the driving tooth (34), and the driving wheel (7) Installed on the motor (8) through the drive shaft (71), and several discharge hoppers (9) are arranged on the outer wall of the cabinet (1). 2. A high-efficiency plastic powder screening device according to claim 1, characterized in that: the first screening device (3) has the same structure as the second screening device (5), and the first screening device ( 3) the cross-sectional shape is ring-shaped, the end of the first screening device (3) is provided with a slide bar (32), the cross-sectional shape of the slide bar (32) is ring-shaped, and the slide bar (32) and the chute (12 ), the inner wall of the first screening device (3) is provided with a slot (33), and the slot (33) is matched with the scraper (31). 3. A high-efficiency plastic powder screening device according to claim 1, characterized in that: the second scraping strips (311) are evenly distributed around the circumference, and the second scraping strips (311) meet at the scraper ( 31), the first scraping strip (35) is located at the end of the second scraping strip (311), the first scraping strip (35) and the second scraping strip (311) are perpendicular to each other, and the first scraping strip (311) is perpendicular to each other. The lower end surfaces of the two scraping bars (311) are in close contact with the upper surface of the first sieve plate (4), and the outer wall of the scraping plate (31) is provided with a block (312). 4. A high-efficiency plastic powder screening device as claimed in claim 1, characterized in that: the number of said hoppers (9) is 3, and said hoppers (9) are provided with baffles (91) . 5. A high-efficiency plastic powder screening device according to claim 1, characterized in that: the first sieve plate (4) is parallel to the second sieve plate (6), and the first sieve plate (4) ) The sieve hole diameter is greater than the sieve hole diameter of the second sieve plate (6). 6. A high-efficiency plastic powder screening device according to claim 1, characterized in that: the bottom of the cabinet (1) is provided with a slide plate (11).