Screening device for EPDM particle production

Abstract

The utility model relates to the technical field of EPDM (Ethylene-Propylene-Diene Monomer) particle processing, in particular to a screening device for EPDM particle production, which comprises a rack, a vibrating screen mechanism and a batching mechanism, the batching mechanisms are in one-to-one correspondence with the screening cavities, and each batching mechanism comprises a spiral conveying mechanism and a weighing and storing mechanism; the weighing and storing mechanism comprises a storing hopper, a weighing sensor and a discharging valve, the weighing sensor is configured to detect the weight of the storing hopper and materials in the storing hopper, and the discharging valve is installed at the discharging end of the bottom of the storing hopper; the spiral conveying mechanism comprises a conveying shell, a spiral blade and a rotating power source. The top of the conveying shell is provided with an opening used for receiving materials output by the screening cavity corresponding to the conveying shell. Through cooperation of the spiral conveying mechanism and the weighing and storing mechanism, automatic conveying and weighing of screened materials are achieved, manual material shoveling and repeated weighing adjustment are not needed, the labor intensity can be lowered, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of EPDM particle processing technology, and in particular to a screening device for EPDM particle production. Background Technology

[0002] EPDM is ethylene propylene diene monomer rubber. In the production process of EPDM granules, the screening device is the key equipment for achieving particle size classification.

[0003] Existing screening devices typically use vibrating screens. During operation, the vibrating screen separates EPDM granules into two materials, which are then discharged from two outlets. The granules fall directly to the ground, requiring manual shoveling into packaging bags. A weighing device is then used to repeatedly add and remove material until a preset weight is reached. This process presents several problems: manual shoveling and handling are labor-intensive, especially in large-scale production; manual weighing and adjustment are inefficient and difficult to control precisely, easily leading to packaging weight deviations. The aforementioned manual operations have low automation levels and cannot meet the demands of efficient and precise production. Therefore, improvements to the material collection and packaging processes of the screening device are urgently needed. Utility Model Content

[0004] Therefore, it is necessary to address the problems of cumbersome manual operation, low weighing accuracy, and insufficient automation in existing EPDM particle screening devices by providing a screening device for EPDM particle production that integrates screening, conveying, and weighing functions. Through a vibrating screen mechanism, a screw conveyor mechanism, and a weighing and storage mechanism, a fully automated process from material screening and conveying to quantitative weighing is achieved, reducing labor intensity and improving production efficiency and weighing accuracy.

[0005] To achieve the above objectives, this utility model provides a screening device for EPDM pellet production, including a frame and a vibrating screen mechanism. The vibrating screen mechanism includes a screening shell, a shock-absorbing device, and a screen. The screening shell is mounted on the frame via the shock-absorbing device, and the screen is installed inside the screening shell, dividing the inner cavity of the screening shell into upper and lower screening chambers. It also includes a feeding mechanism corresponding to each screening chamber. The feeding mechanism includes a screw conveyor mechanism and a weighing and storage mechanism. The weighing and storage mechanism includes a storage hopper, a weighing sensor, and a discharge valve. The weighing sensor is mounted on the frame, and the storage hopper is mounted on the weighing sensor. The weighing sensor is configured to detect the weight of the storage hopper and the material inside it. A discharge valve is installed at the bottom discharge end of the storage hopper. The screw conveyor mechanism is used to receive and store the material output from its corresponding screening chamber and transport the material to the top feed end of the storage hopper.

[0006] Preferably, the screw conveyor mechanism includes a conveying housing, screw blades, and a rotating power source. The top of the conveying housing has an open opening for receiving the material output from the corresponding screening chamber. The screw blades are located inside the conveying housing. The rotating power source drives the screw blades to rotate so that the screw blades convey the material in the conveying housing to the top feed end of the storage hopper.

[0007] Preferably, the vibrating screen mechanism further includes an excitation source, which is installed at the bottom of the screening housing. The excitation source provides vibration power, causing the EPDM particles to be efficiently screened within the screening housing.

[0008] Preferably, the vibrating screen mechanism further includes an upper guide plate and a lower guide plate. The upper guide plate is fixedly connected to the screen mesh and the inner wall of the screening housing, and the lower guide plate is fixedly connected to the screen mesh and the bottom inner wall of the screening housing. The upper and lower guide plates are arranged in an X-shape, thereby guiding the screened material smoothly into the corresponding conveying housing.

[0009] Preferably, a guide plate is fixed to one end of the screening housing. The guide plate is located below the output end of the screening chamber. The guide plate is configured to guide the material output from the screening chamber to its corresponding open opening, ensuring that the material can accurately enter the screw conveyor mechanism.

[0010] Preferably, the length direction of the conveying shell is consistent with the width direction of the screening shell, which facilitates the conveying shell to receive the material output from the screening chamber.

[0011] Preferably, a fixing ring is fixed to the outer wall of the storage hopper, and the detection end of the weighing sensor is connected to the fixing ring, which facilitates the connection of the weighing sensor to the storage hopper and makes it easier for the weighing sensor to stably detect the weight of the storage hopper and the material inside it.

[0012] Preferably, the lower end of the conveying housing is fixed with a support leg, the lower end of the support leg is fixedly connected to the frame, and a mounting base is fixed on the support leg. The rotational power source is installed on the mounting base to ensure the stable operation of the screw conveyor mechanism.

[0013] Preferably, the screw conveyor mechanism further includes a rotating shaft, which is rotatably connected to the conveyor housing. The screw blades are mounted on the rotating shaft, and the output end of the rotary power source is connected to the rotating shaft through a coupling to realize the stable drive of the rotary power source on the screw blades.

[0014] Beneficial effects: Through the cooperation of the screw conveyor mechanism and the weighing and storage mechanism, the automatic conveying and weighing of the screened material is realized, eliminating the need for manual shoveling and repeated weighing adjustments, which can reduce labor intensity and improve production efficiency. Attached Figure Description

[0015] Figure 1 A three-dimensional representation of an embodiment of this utility model Figure 1 ;

[0016] Figure 2 This is a top view of an embodiment of the present invention;

[0017] Figure 3 This is a side view of an embodiment of the present invention;

[0018] Figure 4 A three-dimensional representation of an embodiment of this utility model Figure 2 (Eliminating the need for a sieve);

[0019] In the diagram, 100 is the frame; 200 is the vibrating screen mechanism; 210 is the screening shell; 211 is the screening chamber; 220 is the shock absorber; 230 is the screen; 240 is the excitation source; 250 is the upper guide plate; 260 is the lower guide plate; 270 is the guide plate; 300 is the screw conveyor mechanism; 310 is the conveyor shell; 311 is the open opening; 320 is the screw blade; 330 is the rotation power source; 340 is the support leg; 350 is the mounting base; 360 is the rotating shaft; 400 is the weighing and storage mechanism; 410 is the storage hopper; 420 is the weighing sensor; 430 is the discharge valve; and 440 is the fixing ring. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Please see Figures 1 to 4 This application provides a screening device for EPDM particle production, including a frame 100, a vibrating screen mechanism 200 and a batching mechanism. The vibrating screen mechanism 200 includes a screening shell 210, a shock absorption device 220, a screen 230 and a vibration source 240.

[0022] Two excitation sources 240 are provided. The excitation sources 240 are installed at an angle at the bottom of the screening shell 210. The excitation sources 240 provide vibration power to promote the efficient screening of EPDM particles in the screening shell 210.

[0023] The vibration damping device 220 adopts spring vibration dampers, which are evenly distributed between the screening shell 210 and the frame 100. The spring vibration dampers reduce the transmission of vibration of the screening shell 210 to the frame 100 and surrounding equipment, thus ensuring the stability of the screening device operation.

[0024] The screen 230 is installed inside the screening housing 210, dividing the inner cavity of the screening housing 210 into upper and lower screening chambers 211. The upper screening chamber 211 can output EPDM particles with larger particle size, while smaller EPDM particles will pass through the screen holes of the screen 230 and fall into the lower screening chamber 211, and be discharged from the lower screening chamber 211.

[0025] The batching mechanism corresponds one-to-one with the screening chamber 211. There are two batching mechanisms, which are symmetrically arranged. The batching mechanism includes a screw conveyor mechanism 300 and a weighing and storage mechanism 400.

[0026] The weighing and storage mechanism 400 includes a storage hopper 410, a weighing sensor 420, and a discharge valve 430. Four weighing sensors 420 are evenly arranged in the horizontal direction and are mounted on the frame 100. A fixing ring 440 is welded to the outer wall of the storage hopper 410. The detection end of the weighing sensor 420 is fixedly connected to the fixing ring 440, thereby realizing accurate detection of the weight of the storage hopper 410 and the material inside it.

[0027] A discharge valve 430 is installed at the bottom discharge end of the storage hopper 410. The discharge valve 430 can be set as a manual butterfly valve, an electric butterfly valve, or a pneumatic butterfly valve, which can control the discharge of materials in the storage hopper 410.

[0028] The screw conveyor mechanism 300 includes a conveying housing 310, a rotating shaft 360, screw blades 320, and a rotary power source 330, wherein the rotary power source 330 is a stepper motor. The top of the conveying housing 310 has an open opening 311 for receiving the material output from the corresponding screening chamber 211. A support leg 340 is fixed to the lower end of the conveying housing 310, and the lower end of the support leg 340 is fixedly connected to the frame 100. A mounting base 350 is welded onto the support leg 340, and the rotary power source 330 is securely mounted on the mounting base 350.

[0029] The rotating shaft 360 and the conveying housing 310 are rotatably connected by bearings. The spiral blade 320 is welded to the rotating shaft 360 and is located inside the conveying housing 310. The output end of the stepper motor is connected to the rotating shaft 360 through a coupling. The rotation speed of the rotating shaft 360 is precisely controlled by the stepper motor, thereby driving the spiral blade 320 to rotate and stably conveying the material in the conveying housing 310 to the top feed end of the storage hopper 410.

[0030] To facilitate the entry of material from the screening chamber 211 into its corresponding conveying housing 310, a vibrating screen mechanism 200 is also provided, including an upper guide plate 250 and a lower guide plate 260. The upper guide plate 250 is fixedly connected to the screen 230 and the inner wall of the screening housing 210 by welding, and the lower guide plate 260 is also fixedly connected to the screen 230 and the bottom inner wall of the screening housing 210 by welding. The upper guide plate 250 and the lower guide plate 260 are arranged in an X-shape. This structural design can effectively guide the screened material smoothly into the corresponding conveying housing 310.

[0031] A guide plate 270 is fixed to one end of the screening housing 210. The guide plate 270 is located below the output end of the screening chamber 211. The guide plate 270 is configured to guide the material output from the screening chamber 211 to the corresponding open opening 311. The guide plate 270 is inclined so that the material output from the screening chamber 211 can be accurately guided to the open opening 311 of the corresponding conveying housing 310 to prevent the material from spilling.

[0032] The length of the conveying housing 310 is aligned with the width of the screening housing 210, facilitating the receiving of materials from the screening chamber 211. This layout design makes full use of the equipment space, enabling the conveying housing 310 to receive the maximum amount of material from the screening chamber 211, ensuring the shortest and smoothest material conveying path, and reducing the risk of blockage during material conveying.

[0033] By placing the EPDM particles to be screened into the screening housing 210 and onto the screen 230, the vibration source 240 is activated to vibrate the screening housing 210. The EPDM particles are screened under the action of the screen 230. The material in the upper screening chamber 211 is guided by the upper guide plate 250 and moves to the upper part of the corresponding conveying housing 310. After being guided by the guide plate 270, it enters the conveying housing 310 through the open opening 311. The material in the lower screening chamber 211 is guided by the lower guide plate 260 and moves to the upper part of the corresponding conveying housing 310. After being guided by the guide plate 270, it enters the conveying housing 310 through the open opening 311.

[0034] The rotary power source 330 drives the spiral blades 320 to rotate, conveying the material to the storage hopper 410. The weighing sensor 420 detects the weight of the material in the storage hopper 410 in real time. When the preset weight is reached, the rotary power source 330 stops working, the spiral blades 320 stop feeding the material to the storage hopper 410, and the vibrating screen mechanism 200 continues to work, conveying the EPDM particles to the conveying housing 310. The conveying housing 310 can temporarily store some EPDM particles.

[0035] Subsequently, the discharge valve 430 opens, discharging the material from the storage hopper 410. A packaging bag is placed directly below the storage hopper 410 for easy collection of the discharged material. The process of opening the discharge valve 430 and emptying the material is relatively short. The temporary storage capacity of the conveying housing 310 is sufficient to meet the continuous feeding volume of the vibrating screen mechanism 200 during the discharge of the storage hopper 410, preventing excessive EPDM particles from being stored in the conveying housing 310 and causing overflow.

[0036] Specifically, a control circuit board can be set up, electrically connected to the load cell 420, the vibration source 240, and the rotational power source 330. When the load cell 420 detects that the weight of the material in the storage hopper 410 has reached the preset weight, the control circuit board controls the rotational power source 330 to stop working. When the discharge valve 430 is set as an electric butterfly valve, the control circuit board is electrically connected to the electric butterfly valve, which can control automatic discharge.

[0037] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A screening device for EPDM pellet production, comprising a frame (100) and a vibrating screen mechanism (200), wherein the vibrating screen mechanism (200) comprises a screening housing (210), a shock-absorbing device (220), and a screen (230), the screening housing (210) being mounted on the frame (100) via the shock-absorbing device (220), and the screen (230) being mounted inside the screening housing (210), the screen (230) dividing the inner cavity of the screening housing (210) into upper and lower screening chambers (211); characterized in that, It also includes a batching mechanism corresponding to each screening chamber (211), the batching mechanism including a screw conveyor mechanism (300) and a weighing and storage mechanism (400); the weighing and storage mechanism (400) includes a storage hopper (410), a weighing sensor (420) and a discharge valve (430), the storage hopper (410) is mounted on the weighing sensor (420), the weighing sensor (420) is configured to detect the weight of the storage hopper (410) and the material inside it, and the discharge valve (430) is installed at the bottom discharge end of the storage hopper (410); the screw conveyor mechanism (300) is used to receive and store the material output from the screening chamber (211) corresponding to it, and to transport the material to the top feed end of the storage hopper (410).

2. The sieving device for EPDM particles production according to claim 1, characterized in that, The screw conveyor mechanism (300) includes a conveying housing (310), a screw blade (320), and a rotary power source (330). The top of the conveying housing (310) has an open opening (311) for receiving the material output from the corresponding screening chamber (211). The screw blade (320) is located inside the conveying housing (310). The rotary power source (330) drives the screw blade (320) to rotate so that the screw blade (320) conveys the material in the conveying housing (310) to the top feed end of the storage hopper (410).

3. The screening device for EPDM particles production according to claim 1, characterized in that, The vibrating screen mechanism (200) also includes an excitation source (240), which is installed at the bottom of the screening housing (210).

4. The screening device for EPDM particles production according to claim 2, characterized in that, The vibrating screen mechanism (200) also includes an upper guide plate (250) and a lower guide plate (260). The upper guide plate (250) is fixedly connected to the screen (230) and the inner wall of the screening shell (210). The lower guide plate (260) is fixedly connected to the screen (230) and the bottom inner wall of the screening shell (210). The upper guide plate (250) and the lower guide plate (260) are arranged in an X-shape.

5. The sieving apparatus for EPDM particles production according to claim 4, characterized in that, One end of the screening housing (210) is fixed with a guide plate (270). The guide plate (270) is located below the output end of the screening chamber (211). The guide plate (270) is configured to guide the material output from the screening chamber (211) to its corresponding open opening (311).

6. The screening device for EPDM particles production according to claim 4, characterized in that, The length direction of the conveying housing (310) is consistent with the width direction of the screening housing (210).

7. The screening device for EPDM particles production according to claim 1, characterized in that, A fixing ring (440) is fixed to the outer wall of the storage hopper (410), and the detection end of the weighing sensor (420) is connected to the fixing ring (440).

8. The screening device for EPDM particles production according to claim 2, characterized in that, The lower end of the conveying housing (310) is fixed with a support leg (340), the lower end of the support leg (340) is fixedly connected to the frame (100), and a mounting base (350) is fixed on the support leg (340). The rotation power source (330) is mounted on the mounting base (350).

9. The screening device for EPDM particles production according to claim 2, characterized in that, The spiral conveying mechanism (300) also includes a rotating shaft (360), which is rotatably connected to the conveying housing (310). The spiral blades (320) are mounted on the rotating shaft (360), and the output end of the rotating power source (330) is connected to the rotating shaft (360) through a coupling.

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