Rotary vibration screen discharging structure for screening PVDC thin film raw materials

Abstract

The utility model relates to the technical field of film raw material impurity removal, in particular to a spin vibration screen discharging structure for screening PVDC film raw materials. The spin vibration screen discharging structure comprises a horizontal cylindrical shell, the top of the horizontal cylindrical shell is provided with a feeding port capable of being correspondingly connected with a spin vibration screen discharging port, and the bottom of the horizontal cylindrical shell is provided with a discharging port. The rear end of an inner cavity of the horizontal cylindrical shell is rotationally connected with a rotating disc, and a plurality of first magnetic rods are evenly arranged on the front disc face of the rotating disc. A motor for driving the rotating disc to rotate is further arranged at the rear end part of the horizontal cylindrical shell; the first magnetic rod in circular motion not only can remove impurities such as iron powder in powdery raw materials, but also can uniformly disperse and vibrate the powdery raw materials without adhesion, so that the condition of material blockage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of impurity removal of film raw materials, in particular to a rotary vibration screen discharging structure for screening PVDC film raw materials. Background Art

[0002] The PVDC film industry belongs to the polymer industry. Most of its raw material resins are in powder form. After being transported into the factory, a small amount of raw materials will clump. A rotary vibrating screen is needed to vibrate the raw material resin for a second time and stir it evenly. However, the raw material resin or the rotary vibrating screen device may contain iron filings. Therefore, an iron removal device is needed to remove the iron filings to ensure that the PVDC film raw material resin can be normally produced into finished products when entering the next process without the occurrence of quality accidents such as broken bubbles and black spots.

[0003] The existing Chinese patent with publication number CN211756804U discloses a feeding and discharging structure on a vibrating screen, wherein an iron removal device is provided at the feeding structure, wherein the iron removal device includes a bracket and a plurality of magnetic bars fixedly mounted on the inner side of the bracket, and is used to remove iron chips and impurities from the material before entering the vibrating screen. However, this method of removing iron chips and impurities has the following defects: 1. It is impossible to remove iron chips and impurities generated by the vibrating screen.

[0004] The existing Chinese patent with publication number CN209829248U discloses an iron chip removal device for the discharge port of a rotary vibrating screen, including a shell installed at the discharge port of the rotary vibrating screen by screws, and magnets arranged obliquely on both inner sides of the shell, so that the material channel inside the shell is an S-shaped bend. Although this can solve the problem of iron chip impurities generated by the rotary vibrating screen, the raw material resin is loose and has a small body density. In addition, due to the occurrence of static electricity when the raw material is discharged, it is easy to stick to the wall and block the discharge when passing through the magnetic grid device of the discharge port. Each blockage needs to be cleaned, which is not only time-consuming and labor-intensive, but also has the possibility of mixing new impurities in the clearing process. Therefore, it is particularly important to make the discharge smooth and ensure the normal removal of impurities in this process.

[0005] Therefore, we designed a rotary vibrating screen discharging structure for screening PVDC film raw materials. Utility Model Content

[0006] In order to overcome the deficiencies in the background technology, the utility model discloses a rotary vibration screen discharging structure for screening PVDC film raw materials.

[0007] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0008] A rotary vibrating screen discharging structure for screening PVDC film raw materials, comprising:

[0009] A horizontal cylindrical shell, the top of which has a feed port that can be connected to the discharge port of the rotary vibrating screen, and the bottom of which has a discharge port;

[0010] A rotating disk, rotatably connected to the rear end of the inner cavity of the horizontal cylindrical shell, and a plurality of first magnetic rods are evenly arranged on the front surface of the rotating disk;

[0011] The motor has a fixed portion mounted corresponding to the rear end surface of the horizontal cylindrical shell, and the motor output shaft is drivingly connected to the rotating disk.

[0012] Preferably, the rear disk surface of the rotating disk is provided with a connecting portion which rotates and passes through the rear end surface of the horizontal cylindrical shell, and the connecting portion is correspondingly connected to the output shaft of the motor.

[0013] Preferably, the rotating disk body is provided with a planetary gear structure, and the front end surface of the inner gear ring outside the planetary gear structure is provided with an annular front cover plate, and the inner edge of the annular front cover plate is rotatably sealed with the front disk surface of the rotating disk, and the front end surface of the annular front cover plate is evenly spaced along its circumference and provided with a plurality of second magnetic rods;

[0014] Wherein, a mounting piece is fixedly connected to the outer side of the connecting part, and the planetary gear axle in the middle of the planetary gear structure is correspondingly connected to the mounting piece, so that the inner gear ring and the rotating disk rotate in opposite directions.

[0015] Preferably, the outer gear ring inside the planetary gear structure is fixedly sleeved on the rotating disk body.

[0016] Preferably, a sealing ring is provided between the inner plate surface of the inner edge portion of the annular front cover plate and the front disk surface of the rotating disk.

[0017] Preferably, an annular rear cover is provided on the rear end surface of the inner gear ring, and the inner edge of the annular rear cover is rotatably connected to the connecting portion.

[0018] Preferably, it also includes a flexible connecting pipe whose upper end can be connected to the discharge port of the rotary vibrating screen, and the lower end of the flexible connecting pipe is connected to the feed port of the horizontal cylindrical shell.

[0019] Preferably, the front end of the horizontal cylindrical shell is provided with an outer cover that can be opened and closed.

[0020] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0021] 1. The first magnetic rod in circular motion can not only remove impurities such as iron powder in the powdered raw materials, but also evenly disperse and vibrate the powdered raw materials without adhesion, thus preventing blockage;

[0022] 2. The setting of the planetary gear structure can drive the outer gear ring to rotate while the rotating disk rotates. Since the position of the planetary gear axle is fixed, the planetary gear can only rotate, thereby driving the inner gear ring to rotate. At this time, the rotation direction of the inner gear ring is opposite to the rotation direction of the rotating disk, and the circumferential motion direction of the second magnetic rod is opposite to the circumferential motion direction of the first magnetic rod, thereby improving the effect of uniformly dispersing and vibrating the powdered raw materials, and at the same time, it can also improve the ability to remove impurities such as iron powder in the powdered raw materials;

[0023] 3. The setting of the flexible connecting pipe can isolate and reduce the noise of the horizontal cylindrical shell and the components thereon through the flexible connecting pipe. That is to say, during the normal operation of the rotary vibrating screen, the vibration of the rotary vibrating screen can be prevented from causing the horizontal cylindrical shell and the components thereon to be damaged, thereby extending the service life of the horizontal cylindrical shell and the components thereon and reducing the equipment noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the explosion structure of the inner cavity structure of the horizontal cylindrical shell of the utility model;

[0026] Figure 3 It is a schematic diagram of the explosion structure of the inner cavity structure of the horizontal cylindrical shell of the utility model from another perspective;

[0027] Figure 4 It is a schematic diagram of the structure when the utility model is used;

[0028] Figure 5 It is the test result data diagram in comparative example.

[0029] In the figure: 1. horizontal cylindrical shell; 11. feed port; 12. discharge port; 13. outer cover; 2. rotating disk; 21. connecting part; 3. first magnetic rod; 4. motor; 5. planetary gear structure; 51. inner gear ring; 52. planetary gear; 53. outer gear ring; 54. annular front cover plate; 55. annular rear cover; 6. second magnetic rod; 7. mounting part; 8. sealing ring; 9. flexible connecting pipe. DETAILED DESCRIPTION

[0030] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. to indicate directions or positional relationships, they only correspond to the drawings of the present application, in order to facilitate the description of the present invention; it should be understood that if there are terms such as "end", "side", "end part", "lateral", "lateral", "transverse", "longitudinal", etc. to indicate directions or positional relationships, they only correspond to the length and width of the corresponding parts, that is, "end part" indicates the head and tail areas in the length direction of the corresponding part, and "side part" indicates the head and tail areas in the width direction of the corresponding part; this is for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0031] Embodiment 1, in combination with the attached Figure 1-4 A rotary vibrating screen discharging structure for screening PVDC film raw materials comprises a horizontal cylindrical shell 1, the top of the horizontal cylindrical shell 1 is provided with a feed port 11 which can be connected to the rotary vibrating screen discharging port correspondingly, and the bottom is provided with a discharge port 12; a rotating disk 2 is rotatably connected to the rear end of the inner cavity of the horizontal cylindrical shell 1, and a plurality of first magnetic rods 3 are evenly arranged on the front disk surface of the rotating disk 2; a motor 4 for driving the rotating disk 2 to rotate is also arranged at the rear end of the horizontal cylindrical shell 1; that is, the rotating disk 2 can be driven to rotate by the motor 4, and then the first magnetic rod 3 can be driven to move in a circle. Under the magnetic attraction of the first magnetic rod 3, impurities such as iron powder in the powdered raw material can be removed. Compared with the static magnetic attraction device in the prior art, the first magnetic rod 3 which moves in a circle can not only remove impurities such as iron powder in the powdered raw material, but also the powdered raw material can be evenly dispersed and vibrated without adhesion, thereby preventing blockage.

[0032] As required, the output shaft of the motor 4 can extend into the inner cavity of the horizontal cylindrical housing 1 and be connected to the rear disk surface of the rotating disk 2 accordingly.

[0033] As required, the rear surface of the rotating disk 2 may also be provided with a connecting portion 21 that rotates and penetrates the rear end surface of the horizontal cylindrical shell 1 , and is correspondingly connected to the output shaft of the motor 4 through the connecting portion 21 .

[0034] As required, the rotating disk 2 and the output shaft of the motor 4 can be coaxially connected or eccentrically connected (not coaxially connected). The specific setting is based on the needs and is not specifically limited here.

[0035] As required, in order to facilitate the cleaning of iron filings on the magnetic rod, an openable and closable outer cover 13 is provided at the front end of the horizontal cylindrical housing 1 .

[0036] Embodiment 2, combined with the attached Figure 1-4A rotary vibrating screen discharging structure for screening PVDC film raw materials. Based on the first embodiment, in order to improve the ability to remove iron chips, a second magnetic rod 6 can be provided on the outside of the circle formed by the first magnetic rod 3 with a rotation direction opposite to the first magnetic rod 3.

[0037] As needed, the rotating disk 2 is provided with a planetary gear structure 5, which includes an outer gear ring 53, a planetary gear 52 located outside the outer gear ring 53, and an inner gear ring 51 located outside the planetary gear 52; wherein the outer gear ring 53 is fixedly sleeved on the rotating disk 2 body, a mounting member 7 is fixedly connected to the outer side of the connecting portion 21, and the axle of the planetary gear 52 in the middle of the planetary gear structure 5 is correspondingly connected to the mounting member 7, so that the inner gear ring 51 rotates in the opposite direction to the rotating disk 2; that is, the rotation of the rotating disk 2 drives the outer gear ring 53 to rotate. Since the axle position of the planetary gear 52 is fixed, the planetary gear 52 can only rotate, thereby driving the inner gear ring 51 to rotate. At this time, the rotation direction of the inner gear ring 51 is opposite to the rotation direction of the rotating disk 2, and then the circumferential motion direction of the second magnetic rod 6 is opposite to the circumferential motion direction of the first magnetic rod 3, thereby improving the effect of uniformly dispersing and vibrating the powdered raw materials, and at the same time, it can also improve the ability to remove impurities such as iron powder in the powdered raw materials.

[0038] Furthermore, in order to prevent powdered raw materials from entering the transmission cavity of the planetary gear structure 5, an annular front cover plate 54 is provided on the front end face of the inner gear ring 51, and the inner edge of the annular front cover plate 54 is rotatably sealed with the front disk surface of the rotating disk 2; a plurality of second magnetic rods 6 are evenly spaced along the circumference of the front end face of the annular front cover plate 54, and an annular rear cover 55 is provided on the rear end face of the inner gear ring 51, and the inner edge of the annular rear cover 55 is rotatably connected to the connecting portion 21.

[0039] As needed, a sealing ring 8 is provided between the inner plate surface of the inner edge of the annular front cover plate 54 and the front disk surface of the rotating disk 2; further, the inner plate surface of the inner edge of the annular front cover plate 54 and the front disk surface of the rotating disk 2 both have matching grooves for installing the sealing ring 8, wherein the cross-section of the matching groove is semicircular.

[0040] When the annular front cover plate 54 is provided, the second magnetic rod 6 can be installed on the front surface of the annular front cover plate 54 .

[0041] Embodiment 3, in combination with the attached Figure 1-4 A rotary vibrating screen discharging structure for screening PVDC film raw materials, based on the first or second embodiment, also includes a flexible connecting pipe 9 whose upper end can be connected to the rotary vibrating screen discharging port, and whose lower end is connected to the feeding port 11 of the horizontal cylindrical shell 1; the flexible connecting pipe 9 can be used to isolate and reduce the noise of the horizontal cylindrical shell 1 and its components, that is, during the normal operation of the rotary vibrating screen, the vibration of the rotary vibrating screen can prevent the horizontal cylindrical shell 1 and its components from being damaged, thereby extending the service life of the horizontal cylindrical shell 1 and its components, and reducing the equipment noise.

[0042] In the comparative example, different types of iron removal devices were installed at the feed port and discharge port of the rotary vibrating screen, and the research and analysis of their impurity removal effects are as follows:

[0043] In the test, 1000g of 200-mesh iron powder and 20000g of powdered raw resin were prepared for use;

[0044] Divide the two into four equal parts, i.e., four parts of 250g iron powder and four parts of 5000g powdered raw resin;

[0045] Take 250g of iron powder and 5000g of powdered raw resin each time and mix them evenly. Make a total of four portions of mixed powder and set aside;

[0046] Four groups of tests were conducted, namely, different types of filters were installed at the feed port and the discharge port, and the removal effect was studied and analyzed. The specific operations are as follows:

[0047] After the rotary vibrating screen is turned on, 250g of iron powder and 5000g of powdered raw resin are fed into the feed port. Under the condition that other parameters such as operators, process parameters, equipment, workshop temperature and humidity remain unchanged, the test results are attached. Figure 5 As shown, it can be seen that under the condition of using static magnetic rods, no matter whether it is used at the feed port or the discharge port, or both ports are used, the test data are not much different, and all have good impurity removal effects, but blockage occurs at the discharge port; compared with the installation of dynamic magnetic rods and static magnetic grids, the effect is better than that of static magnetic rods, and no blockage occurs.

[0048] It should be noted that the slight deviation in the test data is due to the fact that when the iron powder comes into contact with the surface of the equipment, a small amount of residue will remain due to the adhesion of the material, and the impact on the test data can be ignored.

[0049] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A rotary vibrating screen discharging structure for screening PVDC film raw materials, characterized in that: include: A horizontal cylindrical shell (1) having a feed inlet (11) on the top that can be connected to a discharge port of the rotary vibrating screen, and a discharge port (12) on the bottom; A rotating disk (2) is rotatably connected to the rear end of the inner cavity of the horizontal cylindrical shell (1), and a plurality of first magnetic rods (3) are evenly arranged on the front disk surface of the rotating disk (2); The motor (4) has a fixed portion mounted corresponding to the rear end surface of the horizontal cylindrical housing (1), and the output shaft of the motor (4) is drivingly connected to the rotating disk (2).

2. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 1, characterized in that: The rear disk surface of the rotating disk (2) is provided with a connecting portion (21) that rotates and penetrates the rear end surface of the horizontal cylindrical shell (1); the connecting portion (21) is correspondingly connected to the output shaft of the motor (4).

3. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 2, characterized in that: The rotating disk (2) is provided with a planetary gear structure (5), and the front end surface of the inner gear ring (51) outside the planetary gear structure (5) is provided with an annular front cover plate (54), and the inner edge of the annular front cover plate (54) is rotationally sealed with the front disk surface of the rotating disk (2), and the front end surface of the annular front cover plate (54) is provided with a plurality of second magnetic rods (6) evenly spaced along its circumference; The outer side of the connecting portion (21) is fixedly connected to a mounting member (7), and the axle of the planetary gear (52) in the middle of the planetary gear structure (5) is correspondingly connected to the mounting member (7), so that the inner gear ring (51) and the rotating disk (2) rotate in opposite directions.

4. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 3, characterized in that: The outer gear ring (53) on the inner side of the planetary gear structure (5) is fixedly sleeved on the body of the rotating disk (2).

5. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 3, characterized in that: A sealing ring (8) is provided between the inner plate surface of the inner edge portion of the annular front cover plate (54) and the front plate surface of the rotating plate (2).

6. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 3, characterized in that: An annular rear cover (55) is provided on the rear end surface of the inner gear ring (51), and the inner edge of the annular rear cover (55) is rotatably connected to the connecting portion (21).

7. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 1, characterized in that: It also includes a flexible connecting pipe (9) whose upper end can be connected to a discharge port of the rotary vibrating screen, and whose lower end is connected to a feed port (11) of the horizontal cylindrical shell (1).

8. The rotary vibrating screen discharging structure for screening PVDC film raw materials according to claim 1, characterized in that: The front end of the horizontal cylindrical shell (1) is provided with an outer cover (13) that can be opened and closed.

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