Particle grading and screening equipment
By designing a particle classification and screening equipment that combines rolling screening and hydraulic rod driving, the problem of insufficient screening of plastic particles in the existing technology is solved, and the effects of preventing clogging and improving screening efficiency are achieved.
Patent Information
- Application Number
- CN202421204296.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-29
AI Technical Summary
When the amount of plastic particles is placed in large quantities, existing plastic particle screening machines are prone to rapid discharge of particles or blockage of screen holes, resulting in insufficient screening.
A particle classification and screening equipment is designed, which uses a combination of U-shaped base, screening bucket, feed hopper, material distribution cover, drive motor, swing arm and hydraulic rod. The drive motor drives the screening bucket to roll, combined with the hydraulic rod. And the design of the swing arm realizes the rolling screening of plastic particles, and controls the screening time of the particles by changing the angle between the screening barrel and the U-shaped base.
It effectively prevents plastic particles from clogging the screen, improves the efficiency and adjustability of particle screening, and ensures adequate screening of plastic particles.
Smart Images
Figure CN222372073U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding, in particular to a particle grading and screening device. Background Art
[0002] Plastic particles are raw materials used to make various plastic products. The preparation of plastic particles usually involves first mixing the plastic raw materials and various masterbatches and then melting them, and then extruding them through an extruder. Plastic particles of different particle sizes have different uses. Usually, manufacturers will screen the produced plastic particles, thereby screening and classifying plastic particles of different diameters, and then bagging and transporting them to various manufacturers. Existing screening machines mostly use vibrating screen plates to screen plastic particles. When the amount of plastic particles put in is relatively balanced, it can have a good screening effect. However, when the amount of plastic particles put in is large, it is easy for the plastic particles to be quickly discharged from the screen, or the accumulation of plastic particles causes the screen holes to be blocked, resulting in the inability to fully screen the plastic particles. Therefore, a particle grading and screening device is designed to solve the above problems. Utility Model Content
[0003] In view of the shortcomings of the existing injection molding processing technology, the purpose of the utility model is to provide a particle grading and screening device, which has the advantages of preventing plastic particles from causing screen blockage and adjustable particle screening rate.
[0004] In order to achieve the above-mentioned purpose, a technical solution adopted by the utility model is: a particle grading and screening equipment, including a U-shaped base, a screening barrel, a feed hopper, a material distribution cover, a driving motor, a swing arm and a hydraulic rod, one side of the U-shaped base is hinged with a swing arm, the other side of the U-shaped base is provided with a hydraulic rod, the hydraulic rod is telescopically hinged with the swing arm, the screening barrel is rotatably connected to the swing arms at both ends through the rotating shafts and the swing arms at both sides, the output shaft at one end of the screening barrel passes through the swing arm and is connected to the output shaft of the driving motor, and the driving motor is fixedly connected to the swing arm On the outside, one end of the screening barrel is a semi-enclosed feed port, and the other end of the screening barrel is an unenclosed discharge port. The feed hopper is fixedly connected to a swing arm on one side and fits the feed port at one end of the screening barrel. The material distribution cover is fixed to a swing arm on the other side and fits the discharge port at one end of the screening barrel. The screening barrel has a coarse screen and a fine screen radially arranged inside. The coarse screen covers the feed port inside, and the fine screen covers the coarse screen inside. The material distribution cover is used to divert the plastic particles screened by the coarse screen and the fine screen;
[0005] Preferably, the angle between the screening barrel and the U-shaped base when driven by the hydraulic rod is a, wherein 15°≥a≥0°; by changing the angle between the screening barrel and the U-shaped base, the speed of the axial movement of the plastic particles in the screening barrel can be changed, and when the axial distance of the screening barrel remains unchanged, the screening time of the plastic particles in the screening barrel can be controlled;
[0006] Further preferably, the discharge port of the screening barrel is lower than the feed port of the screening barrel;
[0007] Preferably, the inside of the material distribution cover has a first flow channel, a second flow channel and a third flow channel arranged radially, the first flow channel covers the discharge port inside the coarse screen, the second flow channel covers the discharge port between the coarse screen and the fine screen, and the third flow channel covers the discharge port between the fine screen and the inner wall of the screening barrel;
[0008] Preferably, the diameter of the coarse screen is d1, the diameter of the fine screen is d2, and the inner diameter of the screening barrel is d3, wherein d3=2*d2=3*d1;
[0009] Preferably, the length of the screening barrel is twice the diameter; the length of the screening barrel is proportional to the screening efficiency of the plastic particles, and the diameter of the screening barrel is proportional to the maximum amount of plastic particles that can be put in;
[0010] The beneficial effects of the utility model are: 1. The screening barrel is driven to roll by a driving motor, so that the coarse screen and the fine screen in the screening barrel roll and screen the plastic particles. The rolling process will drive the plastic particles to be scattered in the screening barrel. The force generated by the scattering can push out the particles blocked in the screen, thereby preventing the screen from being blocked; 2. By changing the angle between the screening barrel and the U-shaped base, the axial movement speed of the plastic particles in the screening barrel can be changed. When the axial distance of the screening barrel remains unchanged, the screening time of the plastic particles in the screening barrel can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a cross-sectional structural view of the utility model;
[0012] Figure 2 , 3 This is a three-dimensional structural view of the screening barrel of the utility model;
[0013] Figure 4 This is a three-dimensional structural view of the screening barrel of the utility model in a cutaway state;
[0014] Figure 5 , 6 This is a three-dimensional structural view of the material distribution cover of the utility model. DETAILED DESCRIPTION
[0015] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0016] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0017] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided with", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] See also Figures 1 to 6 , the utility model embodiment includes:
[0019] A particle grading and screening device comprises a U-shaped base 1, a screening barrel 2, a feed hopper 3, a material distribution cover 4, a driving motor 5, a swing arm 6 and a hydraulic rod 7. The U-shaped base 1 is hinged with a swing arm 6 on one side, and a hydraulic rod 7 is provided on the other side of the U-shaped base 1. The hydraulic rod 7 is telescopically hinged with the swing arm 6. The screening barrel 2 is rotatably connected to the swing arms 6 at both ends through the rotating shafts and the swing arms 6 at both sides. The output shaft at one end of the screening barrel 2 passes through the swing arm 6 and is connected to the output shaft of the driving motor 5. The driving motor 5 is fixedly connected to the outside of the swing arm 6. One end of the screening barrel 2 is semi-enclosed. The feed port 21 of the screening barrel 2 is an unsealed discharge port 22 at the other end. The feed hopper 3 is fixedly connected to the swing arm 6 on one side and fits the feed port 21 at one end of the screening barrel 2. The material distribution cover 4 is fixed to the swing arm 6 on the other side and fits the discharge port 22 at one end of the screening barrel 2. The screening barrel 2 has a coarse screen 8 and a fine screen 9 radially arranged inside. The coarse screen 8 covers the feed port 21 inside, and the fine screen 9 covers the coarse screen 8 inside. The material distribution cover 4 is used to divert the plastic particles screened by the coarse screen 8 and the fine screen 9;
[0020] The angle between the screening barrel 2 and the U-shaped base 1 driven by the hydraulic rod 7 is a, wherein 15°≥a≥0°; by changing the angle between the screening barrel 2 and the U-shaped base 1, the speed of the axial movement of the plastic particles in the screening barrel 2 can be changed, and when the axial distance of the screening barrel 2 remains unchanged, the screening time of the plastic particles in the screening barrel 2 can be controlled;
[0021] The discharge port 22 of the screening barrel 2 is lower than the feed port 21 of the screening barrel 2;
[0022] The inside of the material distribution cover 4 has a first flow channel 41, a second flow channel 42 and a third flow channel 43 arranged radially, the first flow channel 41 covers the discharge port inside the coarse screen 8, the second flow channel 42 covers the discharge port between the coarse screen 8 and the fine screen 9, and the third flow channel 43 covers the discharge port between the fine screen 9 and the inner wall of the screening barrel 2;
[0023] The diameter of the coarse screen 8 is d1, the diameter of the fine screen 9 is d2, and the inner diameter of the screening barrel 2 is d3, wherein d3=2*d2=3*d1;
[0024] The length of the screening barrel 2 is twice the diameter; the length of the screening barrel 2 is proportional to the screening efficiency of the plastic particles, and the diameter of the screening barrel 2 is proportional to the maximum amount of plastic particles that can be put in;
[0025] Through the above settings, in the actual working process, its specific working principle is as follows:
[0026] First, the driving motor 5 is started to drive the screening barrel 2 to roll, and then the plastic particles to be screened are poured from the feed hopper 3;
[0027] The poured plastic particles pass through the feed hopper 3 and enter the coarse screen 8 in the screening barrel 2 for the first screening. The particles with a size larger than the aperture of the coarse screen 8 fall from the side discharge port 22 into the first flow channel 41 of the material distribution cover 4, and the particles with a size smaller than the aperture of the coarse screen 8 fall between the coarse screen 8 and the fine screen 9 for the second screening.
[0028] The plastic particles falling between the coarse screen 8 and the fine screen 9 are screened twice by the fine screen 9. The plastic particles with a size larger than the aperture of the fine screen 9 fall from the one side discharge port 22 into the second flow channel 42 of the material distribution cover 4. The plastic particles with a size smaller than the aperture of the fine screen 9 fall between the fine screen 9 and the inner wall of the screening barrel 2, and fall from the one side discharge port 22 into the third flow channel 43 of the material distribution cover 4.
[0029] During the screening process, the angle between the screening barrel 2 and the U-shaped base 1 is changed, so that the speed of the axial movement of the plastic particles in the screening barrel 2 can be changed. When the axial distance of the screening barrel 2 remains unchanged, the screening time of the plastic particles in the screening barrel 2 can be controlled.
[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A particle grading and screening device, characterized in that: The invention comprises a U-shaped base, a screening barrel, a feed hopper, a material distribution cover, a driving motor, a swing arm and a hydraulic rod, wherein a swing arm is hinged on one side of the U-shaped base, and a hydraulic rod is provided on the other side of the U-shaped base, and the hydraulic rod is telescopically hinged with the swing arm. The screening barrel is rotatably connected with the swing arms on both sides through rotating shafts at two ends, an output shaft at one end of the screening barrel passes through the swing arm and is connected with the output shaft of the driving motor, and the driving motor is fixedly connected to the outside of the swing arm, one end of the screening barrel is a semi-closed feeding port, and the other end of the screening barrel is an unclosed discharging port, the feed hopper is fixedly connected to the swing arm on one side and fits the feeding port at one end of the screening barrel, the material distribution cover is fixed to the swing arm on the other side and fits the discharging port at one end of the screening barrel, the screening barrel is provided with a coarse screen and a fine screen radially arranged inside, the coarse screen covers the feeding port inside, and the fine screen covers the coarse screen inside, and the material distribution cover is used to divert the plastic particles screened by the coarse screen and the fine screen.
2. A particle grading and screening device according to claim 1, characterized in that: The angle between the screening barrel and the U-shaped base when driven by the hydraulic rod is a, wherein 15°≥a≥0°.
3. A particle grading and screening device according to claim 2, characterized in that: The discharge port of the screening barrel is lower than the feed port of the screening barrel.
4. The particle grading and screening device according to claim 1, characterized in that: The inside of the material distribution cover is provided with a radially arranged first flow channel, a second flow channel and a third flow channel, the first flow channel covers the discharge port inside the coarse screen, the second flow channel covers the discharge port between the coarse screen and the fine screen, and the third flow channel covers the discharge port between the fine screen and the inner wall of the screening barrel.
5. The particle grading and screening device according to claim 1, characterized in that: The diameter of the coarse screen is d1, the diameter of the fine screen is d2, and the inner diameter of the screening barrel is d3, wherein d3=2*d2=3*d1.
6. The particle grading and screening device according to claim 1, characterized in that: The length of the screening barrel is twice the diameter.