Plastic particle screening device for plastic production

Abstract

The utility model belongs to the technical field of plastic production, and particularly relates to a plastic particle screening device for plastic production, which comprises a fixing frame, a sliding rod slidably mounted in the fixing frame, a limit block fixedly connected to one side of the sliding rod, a compression spring fixedly connected between the limit block and the fixing frame, a screening barrel fixed at the other end of the sliding rod, and a fixing rod fixedly connected to the top side of the screening barrel. A sliding groove is formed in the fixing frame, a sliding plate is slidably installed in the sliding groove, a fixing plate is fixedly connected to the top side of the fixing frame, a cam is installed at the output end of the driving motor, and the protruding end of the cam is rotationally connected with a connecting rod. A driving motor is started, the output end of the driving motor drives a cam to rotate, a connecting rod can be pushed by the cam to do reciprocating motion, and therefore a sliding plate can be driven to do reciprocating sliding in a sliding groove, the screening barrel moves along with the sliding plate, plastic particles are vibrated, the particles generate relative motion in the screening barrel, and vibration screening of the plastic particles is achieved. And the moving speed of plastic particles on the screen surface can be increased, so that the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production, in particular to a plastic particle screening device for plastic production. Background Art

[0002] In the production process of plastic granules, the plastic granules produced by the plastic granulator may be of different sizes, which affects the quality of the plastic products. Therefore, when using plastic granules to make finished products, the plastic granules need to be screened. Different finished products are made using plastic granules of different sizes, so a screening device is needed.

[0003] A Chinese patent with the announcement number CN109291306B discloses a plastic particle screening device, including a box body, the box body is a cavity structure, the bottom end of the box body is provided with an oscillation mechanism, the oscillation mechanism includes a base plate, the middle position of the base plate is provided with a groove, the groove is provided with a support plate 1 and a support plate 2, respectively, the support plate 1 is provided with a rotating rod 1 on the side away from the bottom of the support plate 2, the rotating rod 1 extends to the shaft sleeve 1 located in the base plate, the support plate 2 is provided with a rotating rod 2 on the side away from the bottom of the support plate 1, and the other end of the rotating rod 2 passes through the shaft sleeve 2 located in the base plate and is connected to the rotating motor on one side of the base plate. Beneficial effect: The setting of the buffer mechanism avoids direct damage to the screen plate when the plastic particles are fed, and also avoids the troubles of incomplete screening and blockage of the screen plate caused by excessive accumulation of plastic particles on the screen plate. The design makes the screening efficiency high and the screening thorough, and the plastic particles can be effectively screened.

[0004] However, there are still some problems with the above-mentioned screening device. In practical applications, the screening barrel is usually fixed and cannot perform vibration screening, which will slow down the movement speed of plastic particles on the screen surface, thereby affecting the screening efficiency and effect. Therefore, a plastic production plastic particle screening device is proposed to address the above-mentioned problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the background technology, the utility model provides a plastic particle screening device for plastic production.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a plastic production plastic particle screening device described in the utility model comprises a fixed frame, two sliding rods are slidably installed inside one side of the fixed frame, a limiting block is fixedly connected to one side of the sliding rod, a compression spring is fixedly connected between the limiting block and the fixed frame, the compression spring is sleeved on the outer wall of the sliding rod, a screening barrel is fixedly installed on the other end of the sliding rod, a fixing rod is fixedly connected to the top side edge of the screening barrel, a sliding groove is provided inside the other side of the fixed frame, a slide plate is slidably installed inside the sliding groove, one end of the slide plate is fixedly installed on the outer wall of the fixing rod, a fixing plate is fixedly connected to the top side of the fixed frame, a driving motor is assembled on the top side of the fixing plate, a cam is installed on the output end of the driving motor, a connecting rod is rotatably connected inside the protruding end of the cam, and one end of the connecting rod is fixedly installed on the top side of the other end of the slide plate, so as to realize vibrating screening of plastic particles, accelerate the moving speed of plastic particles on the screen surface, and thus improve screening efficiency.

[0007] Preferably, two screening plates are equidistantly fixedly connected inside the screening barrel, and the apertures of the screening plates decrease from top to bottom. The screening plates cooperate to form three screening bins inside the screening barrel, thereby achieving graded screening of plastic particles of different sizes and improving the accuracy of subsequent plastic particle processing.

[0008] Preferably, a through groove is provided on one side of the screening plate at the bottom side of the screening bin, a receiving hopper is fixedly installed inside the through groove, wherein the screening bin on the bottom side is connected to a discharge pipe, a one-way valve is installed on the outer wall of the discharge pipe to facilitate the discharge of the screened plastic particles.

[0009] Preferably, a support plate is fixedly mounted on one side of the fixed frame, a conveying cylinder is mounted on one side of the support plate, a feed pipe is connected to the top side of one end of the conveying cylinder, an output pipe is connected to the bottom side of the other end of the conveying cylinder, a feed port is opened on the top side of the screening barrel, and one end of the output pipe is arranged inside the feed port to facilitate the feeding of plastic particles that need to be screened.

[0010] Preferably, a conveying motor is installed on one side of the conveying cylinder, and a spiral auger is installed on the output end of the conveying motor. One end of the spiral auger passes through the conveying cylinder and is rotatably installed on the inner wall of one side thereof, which can automatically and evenly deliver the plastic particles to be screened into the screening barrel, thereby improving the subsequent screening effect and efficiency.

[0011] Preferably, a control panel is installed on one side of the fixing frame, and the control panel is used for operating and controlling the electrical components inside the screening device, thereby facilitating the operating and controlling of the electrical components inside the device and improving the operating convenience of the device.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model starts the driving motor, and its output end drives the cam to rotate. The connecting rod will reciprocate under the push of the cam, thereby driving the slide plate to slide back and forth in the slide groove, and thus driving the screening barrel to reciprocate under the guidance of the slide rod. The plastic particles inside are subjected to vibration and friction, so that the particles produce relative movement in the screening barrel. At the same time, the plastic particles are vibrated and screened, which can speed up the movement speed of the plastic particles on the screen surface, thereby improving the screening efficiency;

[0014] 2. When the conveying motor of the utility model starts working, its output end drives the spiral auger to rotate, which can push the plastic particles forward until they reach the other end of the conveying cylinder. At this time, the particles are sent into the feed port through the output pipe and then into the screening barrel. The plastic particles to be screened can be automatically and evenly sent into the screening barrel, thereby improving the subsequent screening effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic diagram of the main structure of the intermediate screening device of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the vibration screening component;

[0018] Figure 3 This is a schematic diagram of the internal structure of the screening barrel;

[0019] Figure 4 It is a schematic diagram of the structure of the conveying feed component.

[0020] In the figure: 1. fixed frame; 2. sliding rod; 3. limit block; 4. compression spring; 5. screening barrel; 6. fixed rod; 7. slide groove; 8. slide plate; 9. fixed plate; 10. driving motor; 11. cam; 12. connecting rod; 13. screening plate; 14. through groove; 15. receiving hopper; 16. discharge pipe; 17. one-way valve; 18. support plate; 19. conveying cylinder; 20. feed pipe; 21. output pipe; 22. feed port; 23. conveying motor; 24. spiral auger; 25. control panel; 26. screening bin. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 As shown, a plastic production plastic particle screening device comprises a fixed frame 1, two sliding rods 2 are slidably installed inside one side of the fixed frame 1, a limiting block 3 is fixedly connected to one side of the sliding rod 2, a compression spring 4 is fixedly connected between the limiting block 3 and the fixed frame 1, the compression spring 4 is sleeved on the outer wall of the sliding rod 2, a screening barrel 5 is fixedly installed on the other end of the sliding rod 2, a fixing rod 6 is fixedly connected to the top side edge of the screening barrel 5, a sliding groove 7 is opened inside the other side of the fixed frame 1, a sliding plate 8 is slidably installed inside the sliding groove 7, one end of the sliding plate 8 is fixedly installed on the outer wall of the fixing rod 6, a fixing plate 9 is fixedly connected to the top side of the fixing frame 1, a driving motor 10 is assembled on the top side of the fixing plate 9, a cam 11 is installed on the output end of the driving motor 10, a connecting rod 12 is rotatably connected inside the raised end of the cam 11, and one end of the connecting rod 12 is fixedly installed on the sliding plate 8 On the top side of the other end, one side of the fixed frame 1 is equipped with a control panel 25; when working, in actual application, the screening barrel 5 is usually fixed and cannot perform vibration screening, which will slow down the movement speed of the plastic particles on the screen surface, thereby affecting the screening efficiency and effect, and starting the drive motor 10, the cam 11 driven by its output end rotates accordingly, so the connecting rod 12 will reciprocate under the push of the cam 11, thereby driving the slide plate 8 to slide back and forth in the slide groove 7, thereby driving the screening barrel 5 to reciprocate under the guidance of the slide bar 2, and the plastic particles inside it are vibrated, so that the particles produce relative movement in the screening barrel 5. At the same time, the setting of the limit block 3 and the compression spring 4 ensures that the slide bar 2 can move smoothly when subjected to external force, and can return to its original position after the external force disappears, thereby realizing vibration screening of the plastic particles, which can speed up the movement speed of the plastic particles on the screen surface, thereby improving the screening efficiency.

[0023] See also Figure 3 As shown, two screening plates 13 are fixedly connected to the inside of the screening barrel 5 at equal distances, and the apertures of the screening plates 13 decrease from top to bottom. The inside of the screening barrel 5 is formed into three screening bins 26 by the screening plates 13;

[0024] The bottom side of the screening bin 26 is located on one side of the screening plate 13 and is provided with a through slot 14, and a receiving hopper 15 is fixedly installed inside the through slot 14, wherein the screening bin 26 on the bottom side is connected to a discharge pipe 16, and a one-way valve 17 is installed on the outer wall of the discharge pipe 16; when working, in the production process of plastic particles, since the plastic particles produced by the plastic granulator may have different sizes, the quality of the plastic products is affected, so when using plastic particles to make finished products, the plastic particles need to be screened, and when the plastic particles move in the screening barrel 5, the particles with larger particle sizes cannot pass through the aperture of the screening plate 13, so they will The plastic particles are retained in the screening bin 26 of the upper layer, while the particles with smaller particle sizes can pass through the aperture of the screening plate 13 and fall into the screening bin 26 of the next layer. In this way, through the cooperation of the two screening plates 13, the plastic particles are divided into three different particle size ranges and stay in the three screening bins 26 respectively. When the screening process is completed, the one-way valve 17 can be opened to allow the particles in the bottom screening bin 26 to be discharged through the discharge pipe 16. At the same time, the particles in the other two screening bins 26 can also be collected by the corresponding receiving hoppers 15, thereby realizing the grade screening and discharge of plastic particles of different sizes, and improving the accuracy of subsequent plastic particle processing.

[0025] See also Figure 4 As shown, a support plate 18 is fixedly mounted on one side of the fixing frame 1, a conveying cylinder 19 is mounted on one side of the supporting plate 18, a feed pipe 20 is connected to the top side of one end of the conveying cylinder 19, an output pipe 21 is connected to the bottom side of the other end of the conveying cylinder 19, a feed port 22 is opened on the top side of the screening barrel 5, and one end of the output pipe 21 is arranged inside the feed port 22;

[0026] A conveying motor 23 is installed on one side of the conveying cylinder 19, and a spiral auger 24 is installed on the output end of the conveying motor 23. One end of the spiral auger 24 penetrates the conveying cylinder 19 and is rotatably installed on the inner wall of one side thereof. During operation, when the plastic particles are screened and fed, the one-time feeding will affect the effect of screening the plastic particles. The plastic particles to be screened enter the conveying cylinder 19 through the feeding pipe 20. At this time, the conveying motor 23 starts to work, and its output end drives the spiral auger 24 to rotate inside the conveying cylinder 19, which can effectively push the plastic particles forward until they reach the other end of the conveying cylinder 19. At this time, the particles are fed into the feed port 22 opened on the top side of the screening barrel 5 through the output pipe 21, thereby entering the interior of the screening barrel 5 for screening operation, and the plastic particles to be screened can be automatically and evenly fed into the screening barrel 5, thereby improving the subsequent screening effect and efficiency.

[0027] Working principle: the plastic particles to be screened enter the conveying barrel 19 through the feed pipe 20. At this time, the conveying motor 23 starts to work, and its output end drives the spiral auger 24 to rotate inside the conveying barrel 19, which can effectively push the plastic particles forward until they reach the other end of the conveying barrel 19. At this time, the particles are sent to the feed port 22 opened on the top side of the screening barrel 5 through the output pipe 21, and then enter the interior of the screening barrel 5 for screening. The plastic particles to be screened can be automatically and evenly fed into the screening barrel 5, thereby improving the subsequent screening effect and efficiency;

[0028] Start the driving motor 10, and the cam 11 driven by its output end rotates accordingly, so the connecting rod 12 will reciprocate under the push of the cam 11, thereby driving the slide plate 8 to slide back and forth in the slide groove 7, and thus driving the screening barrel 5 to reciprocate under the guidance of the slide bar 2, and the plastic particles inside it are subjected to vibration and friction, so that the particles produce relative movement in the screening barrel 5. At the same time, the setting of the limit block 3 and the compression spring 4 ensures that the slide bar 2 can move smoothly when subjected to external force, and can return to its original position after the external force disappears, thereby realizing vibration screening of plastic particles, which can speed up the movement speed of plastic particles on the screen surface, thereby improving screening efficiency;

[0029] When the plastic particles move in the screening barrel 5, the particles with larger particle sizes cannot pass through the aperture of the screening plate 13, and therefore will be retained in the screening bin 26 of the upper layer, while the particles with smaller particle sizes can pass through the aperture of the screening plate 13 and fall into the screening bin 26 of the next layer. In this way, through the cooperation of the two screening plates 13, the plastic particles are divided into three different particle size ranges and stay in the three screening bins 26 respectively. When the screening process is completed, the one-way valve 17 can be opened to allow the particles in the bottom screening bin 26 to be discharged through the discharge pipe 16. At the same time, the particles in the other two screening bins 26 can also be collected by the corresponding receiving hoppers 15, thereby realizing the grade screening and discharge of plastic particles of different sizes, and improving the accuracy of subsequent plastic particle processing.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A plastic production plastic particle screening device, characterized in that: The invention comprises a fixed frame (1), wherein two slide bars (2) are slidably installed inside one side of the fixed frame (1), a limit block (3) is fixedly connected to one side of the slide bar (2), a compression spring (4) is fixedly connected between the limit block (3) and the fixed frame (1), and the compression spring (4) is sleeved on the outer wall of the slide bar (2), a screening barrel (5) is fixedly installed on the other end of the slide bar (2), a fixing rod (6) is fixedly connected to the top side edge of the screening barrel (5), and a sliding groove (6) is provided inside the other side of the fixed frame (1) 7), a slide plate (8) is slidably installed inside the slide groove (7), one end of the slide plate (8) is fixedly installed on the outer wall of the fixing rod (6), the top side of the fixing frame (1) is fixedly connected with a fixing plate (9), the top side of the fixing plate (9) is equipped with a driving motor (10), the output end of the driving motor (10) is installed with a cam (11), the protruding end of the cam (11) is rotatably connected with a connecting rod (12), one end of the connecting rod (12) is fixedly installed on the top side of the other end of the slide plate (8).

2. A plastic production plastic particle screening device according to claim 1, characterized in that: Two screening plates (13) are fixedly connected at equal intervals inside the screening barrel (5), the apertures of the screening plates (13) decrease from top to bottom, and the screening barrel (5) forms three screening bins (26) through the screening plates (13).

3. A plastic production plastic particle screening device according to claim 2, characterized in that: The bottom side of the screening bin (26) is located on one side of the screening plate (13) and is provided with a through groove (14), a receiving hopper (15) is fixedly installed inside the through groove (14), wherein the screening bin (26) on the bottom side is connected to a discharge pipe (16), and a one-way valve (17) is installed on the outer wall of the discharge pipe (16).

4. A plastic production plastic particle screening device according to claim 3, characterized in that: A support plate (18) is fixedly mounted on one side of the fixed frame (1), a conveying cylinder (19) is mounted on one side of the support plate (18), a feed pipe (20) is connected to the top side of one end of the conveying cylinder (19), an output pipe (21) is connected to the bottom side of the other end of the conveying cylinder (19), a feed port (22) is provided on the top side of the screening barrel (5), and one end of the output pipe (21) is arranged inside the feed port (22).

5. A plastic production plastic particle screening device according to claim 4, characterized in that: A conveying motor (23) is mounted on one side of the conveying cylinder (19), and a spiral auger (24) is mounted on the output end of the conveying motor (23). One end of the spiral auger (24) penetrates the conveying cylinder (19) and is rotatably mounted on one inner wall of the cylinder.

6. The device for screening plastic particles in plastic production according to claim 1, characterized in that: A control panel (25) is mounted on one side of the fixing frame (1), and the control panel (25) is used to control the operation of the electrical components inside the screening device.

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