Granulation vibrating screen applied to PVDF (Polyvinylidene Fluoride)
By designing a PVDF granulation vibrating screen, and utilizing the screen mesh and vibrating motor in the screening box combined with the tilt control of the lifting platform, the problems of low screening efficiency and clogging in the existing technology are solved, achieving efficient grading and rapid discharge.
Patent Information
- Application Number
- CN202422482819.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-10-15
AI Technical Summary
Existing vibrating screens have low screening efficiency and are prone to clogging at the discharge end during PVDF granulation.
A vibrating screen for granulation of PVDF was designed, comprising a base, a screening box, a conveyor belt, first and second screens, and a vibrating motor. The screening box is tilted by setting a lifting platform and a support base, and secondary screening is achieved by combining the vibration of the vibrating motor. The tilt of the screen is controlled by the alternating rise and fall of the lifting platform, which improves screening efficiency and prevents clogging.
It improves the screening efficiency of PVDF particles, avoids clogging of the discharge port, and achieves rapid grading and efficient discharge.
Smart Images
Figure CN223655453U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of PVDF production and processing technology, specifically to a vacuum preservation packaging device for mutton. Background Technology
[0002] Polyvinylidene fluoride, or PVDF for short, is a highly non-reactive thermoplastic fluoropolymer that is soluble in strong polar solvents such as dimethylacetamide. It has excellent properties such as anti-aging, chemical resistance, weather resistance, and UV radiation resistance. It can be used as an engineering plastic for making sealing rings, corrosion-resistant equipment, capacitors, as well as coatings, insulating materials, and ion exchange membrane materials.
[0003] Depending on the application, some PVDF needs to be granulated. After granulation, a vibrating screen is used to screen the PVDF particles into groups of different particle sizes. Existing vibrating screens have problems such as low screening efficiency and easy clogging at the discharge end. Utility Model Content
[0004] In view of the above problems, this application provides a granulation vibrating screen for PVDF, which has the characteristics of high screening efficiency, convenient discharge, and easy discharge port blockage.
[0005] According to one aspect of the embodiments of this application, a granulation vibrating screen for PVDF is provided. The granulation vibrating screen for PVDF includes a base, a screening box located on top of the base, and two conveyor belts. The two conveyor belts are respectively located on both sides of the screening box. A first screen and a second screen are arranged sequentially from top to bottom within the inner cavity of the screening box. A first discharge port is connected to one side of the screening box at the first screen, and a second discharge port is connected to the other side of the screen at the second screen. Vibration motors are installed at both the first and second screens. Support plates are hinged to opposite sides of the screening box, and the other end of each support plate is fixed to the base. Two lifting platforms are symmetrically arranged on the top of the base, and a support base is provided on the top of each lifting platform. A roller component is rotatably connected to the bottom of the screening box, and the roller component abuts against the support base.
[0006] In some embodiments, the first screen and the second screen divide the inner cavity of the screening box into a first chamber, a second chamber and a third chamber from top to bottom, and a drawer component is provided in the third chamber.
[0007] In some embodiments, the top of the screening box is provided with an inlet, and a hopper is connected to the inlet. The hopper is connected to the first chamber through the inlet.
[0008] In some embodiments, a hoist is provided on the base, and the top discharge end of the hoist extends to the hopper.
[0009] In some embodiments, a first discharge port is connected to a first discharge pipe via a first discharge valve, and the other end of the first discharge pipe extends to one of the conveyor belts. A second discharge port is connected to a second discharge pipe via a second discharge valve, and the other end of the second discharge pipe extends to another conveyor belt.
[0010] In some embodiments, a vertical plate is connected to the top of the support base on the side away from the screening box, and an elastic element is connected to the vertical plate. The other end of the elastic element extends upward and is connected to the side wall of the screening box.
[0011] The beneficial effects of this application are as follows: By setting up a screening box and sequentially installing a first screen, a second screen, and a vibrating motor inside the screening box, PVDF in the screening box can be screened a second time, thereby using the vibrating motor to quickly set PVDF particles into different particle size grades. By setting up lifting platforms and support seats, the two lifting platforms alternately rise and fall, thereby controlling the screening box to tilt at a certain angle, which in turn causes the horizontal positions of the first and second screens to tilt. On the one hand, this allows the PVDF particles falling onto the first and second screens to spread out evenly in the tilted state, thus accelerating the screening rate. On the other hand, it allows the larger PVDF particles retained on the first and second screens to be quickly discharged along the first or second discharge port during the downward sliding process.
[0012] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0014] Figure 1 A schematic diagram of the overall cross-sectional structure of a granulation vibrating screen for PVDF provided in one state according to an embodiment of this application;
[0015] Figure 2A schematic diagram of the overall cross-sectional structure of the granulation vibrating screen for PVDF provided in an embodiment of this application, under another state;
[0016] Figure 3 This is a partial structural diagram of the screening box and base provided in an embodiment of this application.
[0017] The reference numerals in the detailed embodiments are as follows:
[0018] The granulation vibrating screen 100 used in PVDF includes a base 110, a lifting platform 111, a support base 112, a vertical plate 113, an elastic element 114, a screening box 120, a first screen 121, a first discharge port 121a, a second screen 122, a second discharge port 122a, a first chamber 123, a second chamber 124, a third chamber 125, a vibrating motor 126, a roller assembly 127, a drawer assembly 128, a feed port 129, a discharge hopper 129a, a conveyor belt 130, a support plate 140, an elevator 150, a first discharge pipe 160, and a second discharge pipe 170. Detailed Implementation
[0019] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.
[0020] For details, please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the overall cross-sectional structure of the granulation vibrating screen applied to PVDF in one state, as provided in the embodiments of this application. Figure 2 This is a schematic diagram of the overall cross-sectional structure of the PVDF granulation vibrating screen provided in an embodiment of this application, under another state. Figure 3This is a partial structural diagram of the screening box and base provided in an embodiment of this application. The granulation vibrating screen 100 applied to PVDF includes a base 110, a screening box 120 located on top of the base 110, and a conveyor belt 130. The base 110 is used to support and install the other components. The base 110 can be constructed by welding steel structures or by pouring concrete. PVDF will be screened in the screening box 120, and the graded particles will be output to the conveyor belt 130 respectively. There are two conveyor belts 130, one located on top of the base 110 and the other on both sides of the screening box 120. After the screening box 120 completes the screening of PVDF, PVDF of different particle sizes will be discharged from the discharge ports on both sides onto the conveyor belts 130. The inner cavity of the screening box 120 is provided with a first screen 121 and a second screen 122 arranged sequentially from top to bottom. The aperture of the first screen 121 is larger than that of the second screen 122. When PVDF falls into the first screen 121, it will undergo the first screening. The larger particles will remain above the first screen 121, while the smaller particles will pass through the aperture of the first screen 121 and fall onto the second screen 122 for a second screening. The screening process on the second screen 122 is similar to that on the first screen 121, and will not be described in detail here. A first discharge port 121a is connected to one side of the screening box 120 at the first screen 121. The particles retained at the first screen 121 will be discharged from the first discharge port 121a after the screening box 120 is tilted. On the other side of the screen, at the second screen 122, there is a second discharge port 122a. The particles left at the second screen 122 will be discharged from the second discharge port 122a after the screening box 120 is tilted. Both the first screen 121 and the second screen 122 are equipped with a vibration motor 126. The vibration motor 126 can drive the first screen 121 and the second screen to vibrate respectively. On the one hand, it enhances the screening effect, so that small-diameter PVDF can quickly pass through the first screen 121 and the second screen 122. On the other hand, during the feeding process, it can accelerate the larger-diameter PVDF left on the first screen 121 or the second screen 122 to slide down the top of the first screen 121 or the second screen 122 to the corresponding first discharge port 121a or second discharge port 122a. Support plates 140 are hinged to opposite sides of the screening box 120. The other end of each support plate 140 is fixed to a base 110. Two lifting platforms 111 are symmetrically arranged on the top of the base 110. During operation, one lifting platform 111 extends while the other descends, alternating in a cyclical manner. This causes a change in the height of the screening box 120 on both sides, resulting in the screening box 120 rotating around its hinge point with the support plate 140. When the screening box 120 rotates, for example, when it moves to the right (…),… Figure 1When the screen 120 is tilted, the first screen 121 and the second screen 122 will be in an inclined state. Large-diameter particles on the first screen 121 will slide down and be discharged through the first discharge port 121a. PVDF particles on the second screen 122 will slide along the second screen 122 to the side away from the second discharge port after the tilt, allowing the PVDF particles raised on the second screen 122 to be quickly flattened. This helps the PVDF particles on the second screen 122 to be quickly screened after the screening box 120 is tilted in another direction. A support base 112 is provided on the top of the lifting platform 111, and a roller component 127 is rotatably connected to the bottom of the screening box 120. The roller component 127 abuts against the support base 112. As the angle between the screening box 120 and the horizontal line changes during rotation, the bottom of the screening box 120 and the support base 112 will be relatively positioned. The roller component 127 can convert sliding friction into rolling friction and achieve a supporting function.
[0021] In summary, in this embodiment, by setting a screening box 120 and sequentially arranging a first screen 121, a second screen 122, and a vibration motor 126 within the screening box 120, PVDF within the screening box 120 can be screened a second time, thereby using the vibration motor 126 to quickly set PVDF particles into different particle size grades. By setting a lifting platform 111 and a support base 112, the two lifting platforms 111 alternately rise and fall, thereby controlling the screening box 120 to tilt at a certain small angle, which in turn tilts the horizontal positions of the first screen 121 and the second screen 122. On the one hand, this allows the PVDF particles falling onto the first screen 121 and the second screen 122 to spread out in the tilted state, thereby accelerating the screening rate. On the other hand, it allows the larger PVDF particles retained on the first screen 121 and the second screen 122 to be quickly discharged along the first discharge port 121a or the second discharge port 122a during the downward sliding process.
[0022] In some embodiments, the first screen 121 and the second screen 122 divide the inner cavity of the screening box 120 into a first chamber 123, a second chamber 124, and a third chamber 125 from top to bottom. A drawer component 128 is provided in the third chamber 125. In this embodiment, with the above arrangement, the smallest PVDF particles (which are relatively few) that pass through the second screen 122 and fall into the third chamber 125 can be sent to the drawer component 128 for collection.
[0023] In some embodiments, the top of the screening box 120 is provided with an inlet 129, and a discharge hopper 129a is connected to the inlet 129. The discharge hopper 129a is connected to the first chamber 123 through the inlet 129. In this embodiment, the material can be discharged through the discharge hopper 129a by means of the above-mentioned arrangement.
[0024] In some embodiments, a hoist 150 is provided on the base 110, and the top discharge end of the hoist 150 extends to the hopper 129a. In this embodiment, by providing the hoist 150, the feeding operation at the hopper 129a can be completed quickly.
[0025] In some embodiments, a first discharge port 121a is connected to a first discharge pipe 160 via a first discharge valve, and the other end of the first discharge pipe 160 extends to one of the conveyor belts 130. A second discharge port 122a is connected to a second discharge pipe 170 via a second discharge valve, and the other end of the second discharge pipe 170 extends to another conveyor belt 130. Through the above-described configuration in this embodiment, the first and second discharge pipes can guide the screened PVDF particles onto the two conveyor belts 130 to avoid leakage and spillage. Furthermore, the first and second discharge valves can be controlled to further prevent the PVDF particles on the first screen 121 and the second screen 122 from being discharged before complete screening.
[0026] In some embodiments, a vertical plate 113 is connected to the top of the support base 112 on the side away from the screening box 120. An elastic element 114 is connected to the vertical plate 113, and the other end of the elastic element 114 extends upward and is connected to the side wall of the screening box 120. Through the above-described arrangement in this embodiment, the elastic element 114 can be used to pull the screening box 120 taut onto the support base 112, preventing the screening box 120 from detaching from the support base 112 during rotation, thereby further enhancing the structural stability of the device.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A granulation vibrating screen for PVDF, characterized in that, It includes a base, a screening box located on top of the base, and two conveyor belts, one on top of the base and the other on each side of the screening box. The inner cavity of the screening box is provided with a first screen and a second screen from top to bottom. One side of the screening box is connected to the first screen and a first discharge port is connected to the second screen. The other side of the screen is connected to the second screen and a second discharge port is connected to the first screen. Vibration motors are provided at both the first screen and the second screen. Support plates are hinged to opposite sides of the screening box, and the other end of the support plates is fixed to the base. Two lifting platforms are symmetrically arranged on the top of the base, and a support seat is provided on the top of the lifting platform. A roller component is rotatably connected to the bottom of the screening box, and the roller component abuts against the support seat.
2. The granulation vibrating screen for PVDF according to claim 1, characterized in that, The first screen and the second screen divide the inner cavity of the screening box into a first chamber, a second chamber and a third chamber from top to bottom, and the third chamber is provided with a drawer component.
3. The granulation vibrating screen for PVDF according to claim 2, characterized in that, The top of the screening box has an inlet, and a hopper is connected to the inlet. The hopper is connected to the first chamber through the inlet.
4. The granulation vibrating screen for PVDF according to claim 3, characterized in that, A hoist is provided on the base, and the top discharge end of the hoist extends to the hopper.
5. The granulation vibrating screen for PVDF according to claim 1, characterized in that, The first discharge port is connected to a first discharge pipe via a first discharge valve, and the other end of the first discharge pipe extends to one of the conveyor belts. The second discharge port is connected to a second discharge pipe via a second discharge valve, and the other end of the second discharge pipe extends to another conveyor belt.
6. The granulation vibrating screen for PVDF according to claim 1, characterized in that, A vertical plate is connected to the top of the support base on the side away from the screening box. An elastic element is connected to the vertical plate, and the other end of the elastic element extends upward and is connected to the side wall of the screening box.