A vibrating screening device suitable for PVC granule production

Abstract

The utility model relates to a kind of vibrating screening devices suitable for PVC plastic particle production, including working stand, the screening part of being hung in the working stand to the plastic particle is screened, and screening part is provided with at least one vibration unit, for driving screening part to vibrate, and buffering part is provided between screening part and working stand, for buffering the impact force generated in vibration screening part, buffering part absorbs and consumes part of impact force generated in vibration screening part, avoid impact force directly acting on working stand, reduce the vibration load borne by working stand, effectively solve the impact force generated in the vibration process of traditional vibrating screening device can be directly transmitted to working stand, leading to working stand long-term bearing high-frequency vibration load, prone to structural loosening, component wear aggravation technical problem.

Description

Technical Field

[0001] This application relates to the field of screening equipment technology, and more specifically, it relates to a vibrating screening device suitable for the production of PVC granules. Background Technology

[0002] In the production of PVC granules, vibrating screens are key equipment for particle size classification. They use a vibration source to drive the movement of the hopper and screen, separating PVC granules of different sizes under the combined effects of centrifugal force and gravity. To ensure screening efficiency, the vibration source must provide a continuous and stable vibration force. However, in traditional vibrating screens, the hopper and the working frame are often rigidly connected. While this rigid connection can fix the hopper position to some extent, the impact force generated during vibration is directly transmitted to the working frame. This causes the working frame to bear high-frequency vibration loads for extended periods, easily leading to structural loosening, accelerated component wear, and even shortening the overall service life of the equipment. Utility Model Content

[0003] To address the shortcomings of the prior art, the purpose of this application is to provide a vibrating screening device suitable for PVC granule production, including a working frame, a screening section for screening granules suspended inside the working frame, and the screening section being equipped with at least one vibration unit for driving the screening section to vibrate, and a buffer section being provided between the screening section and the working frame for buffering the impact force generated by the screening section during vibration.

[0004] Preferably, the buffer part consists of multiple springs, which are welded to both sides of the top of the work frame, and the top of the springs are connected to the screening part.

[0005] Preferably, the vibration unit is either a pneumatic turbine vibrator or a vibration motor.

[0006] Preferably, the screening section includes a hopper, and multiple connecting frames are provided on both sides of the outer side of the hopper, with the bottom of the connecting frames welded to the top of the spring.

[0007] Preferably, the hopper is equipped with a screen, the edges of which are bent upwards, and the screen is connected to the hopper by bolts.

[0008] Preferably, the work frame contains a material collection box for collecting the granules after screening by the screening section.

[0009] Preferably, the top of the hopper extends outward with a guide plate to guide the flow of the granules during feeding, and the guide plate is evenly distributed around the hopper itself.

[0010] In summary, the beneficial effects of this application are as follows:

[0011] The vibrating unit drives the screening section to vibrate on the working frame, thereby realizing the screening process of the granules located inside the vibrating unit. The buffer section absorbs and dissipates part of the impact force generated by the screening section during vibration, preventing the impact force from acting directly on the working frame and reducing the vibration load on the working frame. This not only effectively solves the technical problem that the impact force generated during vibration in traditional vibrating screening devices is directly transmitted to the working frame, causing the working frame to bear high-frequency vibration load for a long time, which easily leads to structural loosening and accelerated wear of components, but also reduces the wear of the working frame and related connecting parts by reducing the vibration load on the working frame, thus avoiding the situation where components are worn out due to frequent and violent vibration, thereby extending the overall service life of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a vibrating screening device suitable for PVC granule production.

[0013] Figure 2 This is a schematic diagram of the screening section;

[0014] Figure 3 This is another structural schematic diagram of a vibrating screening device suitable for PVC granule production;

[0015] Figure 4 This is a cross-sectional structural diagram of a vibrating screening device suitable for PVC granule production.

[0016] Reference numerals: 1. Working frame; 2. Screening section; 201. Hopper; 202. Connecting frame; 203. Screen; 204. Bolt; 205. Guide plate; 206. Folded edge; 207. Shim; 3. Vibration unit; 4. Buffer section; 5. Drop box. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0019] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] A vibrating screening device suitable for PVC granule production, see [link to relevant documentation]. Figures 1 to 4 The system includes a working frame 1, inside which a screening section 2 for screening granules is suspended. The screening section 2 is equipped with at least one vibration unit 3 for driving the screening section 2 to vibrate. A buffer section 4 is provided between the screening section 2 and the working frame 1 to buffer the impact force generated by the screening section 2 during vibration. The screening section 2 is driven to vibrate on the working frame 1 by the vibration unit 3, thereby realizing the screening process of granules located inside the vibration unit 3. The buffer section 4 absorbs and consumes part of the impact force generated by the screening section 2 during vibration, preventing the impact force from acting directly on the working frame 1 and reducing the vibration load on the working frame 1. This not only effectively solves the technical problem that the impact force generated during vibration of traditional vibrating screening devices is directly transmitted to the working frame 1, causing the working frame 1 to bear high-frequency vibration load for a long time, which easily leads to structural loosening and accelerated wear of components, but also reduces the wear degree of the working frame 1 and related connecting parts by reducing the vibration load on the working frame 1, avoiding the situation where the components are accelerated by frequent and violent vibration, thereby extending the overall service life of the equipment.

[0022] The buffer part 4 consists of multiple springs, which are welded to both sides of the top of the work frame 1, and the top of the springs is connected to the screening part 2. The vibration unit 3 can be any one of a pneumatic turbine vibrator or a vibration motor. By providing springs, not only can the screening part 2 be pulled during vibration to prevent it from shifting position on the work frame 1, but the vibration energy generated by the vibration unit 3 can also be absorbed in stages. Specifically, the energy is first consumed by the elastic deformation of the spring itself, and the remaining vibration is attenuated before being transmitted to the work frame 1. This effectively reduces the impact of mechanical stress on the work frame 1. In this embodiment, the spring is an anti-fatigue spring, and its material can be any one of stainless steel or alloy steel. The material is treated with cold working and aging hardening processes to give the spring high strength and high elasticity.

[0023] The vibration unit 3 is a pneumatic turbine vibrator, and there are two pneumatic turbine vibrators installed on opposite sides of the hopper 201. In this embodiment, the pneumatic turbine vibrator can adopt known technical means, such as the pneumatic turbine vibrator of model GT36. However, the specific selection and configuration of the vibration unit 3 is not the innovation of this utility model, so it can be implemented with reference to the existing technology. Therefore, it will not be described in detail in the implementation.

[0024] The vibration unit 3 can also be a vibration motor, and there are two vibration motors installed on opposite sides of the hopper 201. In this embodiment, the vibration motor can adopt known technical means, such as a variable frequency vibration motor of model GZ100. However, the specific selection and configuration of the vibration unit 3 is not the innovation of this utility model, so it can be implemented with reference to the existing technology. Therefore, it will not be described in detail in the implementation.

[0025] The screening section 2 includes a hopper 201, and multiple connecting frames 202 are provided on both sides of the hopper 201, with the bottom of the connecting frames 202 welded to the top of the springs; a screen 203 is provided inside the hopper 201, with the edges of the screen 203 bent upwards, and the screen 203 is connected to the hopper 201 by bolts 204; a guide plate 205 extends outward from the top of the hopper 201 to guide the flow of the granules during feeding, and the guide plate 205 extends along the hopper 201 itself. The screen 203 is evenly distributed around the perimeter. In this embodiment, the edge of the screen 203 is bent upwards to obtain the folded edge 206. One end of the bolt 204 is simply passed through the screen hole of the folded edge 206 and the hopper 201, respectively, and then threadedly connected to the matching nut. This clamps the folded edge 206 between the hopper 201 and the bolt 204, thereby fixing the screen 203 inside the hopper 201. Furthermore, an auxiliary screen 203 connection is provided between the bolt 204 and the screen 203. The gasket 207 effectively increases the contact area between the bolt 204 and the folded edge 206, thereby ensuring a uniform distribution of pressure applied by the bolt 204 and preventing excessive local pressure that could cause deformation or breakage of the folded edge 206. Furthermore, the gasket 207 increases the friction between the bolt 204 and the folded edge 206, reducing their relative movement and providing a fixing function. The detachable connection between the screen 203 and the hopper 201 not only facilitates maintenance of the screen 203 but also makes its replacement more flexible. By simply replacing the screen 203 with a different specification, it is possible to quickly adapt to the screening requirements of different particle sizes and adjust the screening accuracy. In this embodiment, the size of the sieved particles is related to the screen aperture size of the screen 203; therefore, no specific limits are made on the aperture and particle size in this embodiment. The aperture and particle size should be selected based on the actual site conditions.

[0026] The work frame 1 contains a material collection box 5 for collecting the colloid particles after screening by the screening section 2.

[0027] The above embodiments are merely explanations of this application and are not intended to limit this application. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A vibrating screening device suitable for PVC granule production, characterized in that, The device includes a working frame, inside which a screening section for screening granules is suspended. The screening section is equipped with at least one vibration unit for driving the screening section to vibrate. A buffer section is provided between the screening section and the working frame to buffer the impact force generated by the screening section during vibration.

2. A vibrating screening device suitable for PVC granule production according to claim 1, characterized in that, The buffer section consists of multiple springs, which are welded to both sides of the top of the work frame, and the top of the springs is connected to the screening section.

3. A vibrating screening device suitable for PVC granule production according to claim 1, characterized in that, The vibration unit can be either a pneumatic turbine vibrator or a vibration motor.

4. A vibrating screening device suitable for PVC granule production according to claim 2, characterized in that, The screening section includes a hopper, and multiple connecting frames are provided on both sides of the hopper, with the bottom of the connecting frames welded to the top of the spring.

5. A vibrating screening device suitable for PVC granule production according to claim 4, characterized in that, The hopper is equipped with a screen, the edges of which are bent upwards, and the screen is connected to the hopper by bolts.

6. A vibrating screening device suitable for PVC granule production according to claim 1, characterized in that, The work frame contains a material collection box for collecting the colloid particles after screening by the screening section.

7. A vibrating screening device suitable for PVC granule production according to claim 4, characterized in that, The top of the hopper extends outward with a guide plate to guide the flow of the granules during feeding, and the guide plate is evenly distributed around the hopper itself.

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