Vibrating screen mechanism for polyvinyl chloride elastomer waterproof coating production

Abstract

The invention relates to the technical field of polyvinyl chloride elastomer waterproof coating production, in particular to a vibrating screen mechanism for polyvinyl chloride elastomer waterproof coating production. Comprising a feeding port, a device body, an anti-overflow cover, a discharging port, a filtering mechanism and a vibrating screen assembly. The feeding opening is fixedly formed in the upper portion of the device body, the anti-overflow cover is fixedly installed on the upper portion of the device body, the filtering assemblies are horizontally installed on the two sides of the device body, the vibrating screen assembly is installed below the filtering assemblies, and the higher-efficiency vibrating screen filtering effect is achieved through matched movement of a movable plate; the vibration sieve movement in the vertical direction is added, and the movable balls and the release holes are further matched, so that the working efficiency of filtering is improved, and the blockage condition is reduced; through structural cooperation between the movable plates, the effect that the filter screen moves on the xy axis and the y axis within a certain range at the same time is achieved, and the uniformity and integrity of the vibrating screen are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of polyvinyl chloride elastomer waterproof coating production technology, specifically to a vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings. Background Technology

[0002] Polyvinyl chloride (PVC) elastomer waterproof coatings have high market potential due to their excellent weather resistance, chemical resistance, and waterproof performance. The production and processing of PVC elastomer waterproof coatings requires the coordinated operation of many pieces of equipment to efficiently produce qualified coatings. These include mixing and screening equipment: used to mix and screen PVC resin with other additives such as plasticizers, stabilizers, and fillers to prepare the waterproof coating. This equipment typically includes mixers, screeners, and reaction vessels to ensure uniform mixing of raw materials and proper reaction.

[0003] The vibrating screen mechanism used in the granule screening process for polyvinyl chloride elastomer waterproof coating production suffers from several drawbacks. Under high-intensity operation, the internal components experience significant wear and tear. Furthermore, the vibration is often concentrated in one direction with insufficient force in others, failing to ensure uniform vibration across all directions. Over long-term use, the filter screen and its fixing components experience substantial wear, and the vibration process generates considerable noise, posing a health risk to operators. Finally, the filtration efficiency is entirely dependent on the mesh size of the screen and the power of the vibrating screen, resulting in a trade-off between achieving both high quality and efficiency.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a vibrating screen mechanism for the production of polyvinyl chloride elastomer waterproof coatings, which solves the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings cannot simultaneously coordinate and guarantee the vibrating intensity in both the horizontal and vertical directions during use. This results in frequent occurrences of insufficient vibrating effect in one direction and excessive vibrating intensity in the other direction, which can accelerate the wear of parts and increase the operating cost of the device.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings, comprising a feed inlet, a device body, an overflow cover, a discharge outlet, a filter assembly, and a vibrating screen assembly. The feed inlet is fixedly installed above the device body, the overflow cover is fixedly installed above the device body, and the filter assembly is horizontally installed on both sides of the device body. Two movable plates fixedly installed inside the filter assembly cooperate to move, thereby limiting the vibration displacement of the filter assembly within a certain range through kinetic energy conversion. The vibrating screen assembly is installed below the filter assembly. When the irregularly shaped blocks inside the vibrating screen assembly rotate at high speed, they generate centrifugal forces of different directions and magnitudes. These centrifugal forces act on the filter assembly, thereby driving the filter assembly to perform periodic movements in both horizontal and vertical directions.

[0008] The filter assembly is the most important working mechanism in the vibrating screen mechanism of PVC elastomer waterproof coating production. It forms a transition space through the cooperation of the filter box and filter screen, ensuring that PVC particles can move and be filtered sufficiently. Movable balls are added to increase the movement range of the PVC particles. The filter assembly also includes a filter screen, filter box, movable balls, release holes, stabilizers, and a fixed plate. The movable plate is fixedly installed on the upper end of the device body, the filter box is slidably installed above the device body, and another movable plate is fixedly installed below the filter box. The release holes are linearly arrayed along the x and y axes at the lower end of the filter box. The filter screen is fixedly installed on the upper end of the filter box, and the movable balls are placed between the filter screen and the filter box. Between the moving balls, the surface of the moving balls is frosted to reduce friction between the moving balls and the filter screen and filter box, preventing scratches during contact, further reducing noise and extending service life. The height of the filter box is 1.5-2 times the diameter of the moving balls to ensure sufficient movement space for the moving balls during operation. A setting less than 1.5 times will result in insufficient movement space for the moving balls, failing to perfectly achieve the effect of increasing the range of movement of PVC particles, while a setting greater than 2 times will result in excessive vertical displacement of the moving balls, leading to greater wear on the filter screen and filter box, which is not conducive to later maintenance. The fixing plates are fixedly installed on both sides of the device body, and the stabilizers are fixedly installed on the sides of the fixing plates.

[0009] The filter screen has a mesh size of 120-150 mesh. The specific value can be selected according to the particle size of polyvinyl chloride (PVC). A filter screen smaller than 120 mesh will result in poor filtration of PVC particles and will not be able to screen larger particles. A filter screen larger than 150 mesh will delay filtration efficiency and cause excessively long filtration time. The movable ball is placed between the filter screen and the filter box. The ratio of the radius of the movable ball to the radius of the release hole is 5:7. This ensures that the movable ball will not pass through the release hole while vibrating with the material to achieve an anti-clogging effect. The material of the movable ball is preferably rigid plastic, and its density should be selected as low as possible. There are 4-6 through holes arranged in a ring around the release hole. The through holes can further increase the filtration vibration efficiency. When the movable ball is blocked in the release hole, the PVC particles can be filtered out through the through holes.

[0010] The position of the movable plate is mirror-symmetrical along the central axis of the filter screen. The movable plate is hook-shaped, which helps to limit the displacement of the x and y axes and control the vibration range within a certain range. This ensures that the vibration amplitude of the x and y axes of the filter assembly is relatively uniform and within a certain range during operation. The part of the movable plate that is fixedly installed on the device body and the filter box is a fixed block, the middle part of the movable plate is a curved block, and one end of the curved block is a limiting block.

[0011] The stabilizer includes a buffer spring, a fixed sleeve, a moving rod, and an energy-absorbing pad. One end of the buffer spring is fixedly installed on the outer side of the fixed plate, the fixed sleeve is fixedly installed on the other end of the buffer spring, one end of the moving rod is fixedly installed in the middle of the fixed sleeve, and the energy-absorbing pad is fixedly installed on the other end of the moving rod. The energy-absorbing pad is funnel-shaped. The fixed plate is installed by welding and bonding. One end of the buffer spring is fixedly installed on the outer side of the fixed plate, the fixed sleeve is fixedly installed on the other end of the buffer spring, one end of the moving rod is fixedly installed in the middle of the fixed sleeve, and the energy-absorbing pad is fixedly installed on the other end of the moving rod. The energy-absorbing pad is funnel-shaped. The funnel shape increases the force-bearing area of ​​the energy-absorbing pad, thereby reducing the impact force from the fixed moving plate. The preferred materials for the energy-absorbing pad are polyoxymethylene and polypropylene. These two materials have high strength and good elasticity, which can maintain their structural strength while withstanding impact forces.

[0012] A sliding hole is provided at the diagonal intersection of the fixed plate. This placement at the diagonal intersection enhances the installation stability of the fixed plate. The diameter of the sliding hole is 1.1-1.2 times the diameter of the moving rod. If the diameter is less than 1.1 times, the moving rod experiences greater resistance during sliding, hindering the conversion of kinetic energy. If the diameter is greater than 1.2 times, the movement of the moving rod is not restricted by the sliding hole, making the direction of movement uncontrollable and increasing additional noise and instability. A sliding ball is engaged with the surface of the sliding hole. The volume of the sliding ball inside the fixed plate is 60%-80% of its volume. A volume less than 60% results in poor engagement and insufficient structural strength. A volume greater than 80% results in an excessively small protruding portion, failing to guarantee the conversion rate of sliding friction to rolling friction.

[0013] The vibrating screen assembly achieves continuous changes in the magnitude and direction of centrifugal force by rapidly rotating a shaped block, thereby driving the entire assembly to vibrate. The vibrating screen assembly includes a drive motor, a rotating shaft, a counterweight, a hinged plate, a connecting shaft, and a transmission disc. One end of the hinged plate is fixedly installed inside the lower part of the device body. The connecting shaft is installed in the middle of the hinged plate. The mounting plate is fixedly installed above the hinged plate. The drive motor is fixedly installed on the side of the device body. The rotating shaft is fixedly installed inside the drive motor. The counterweight is fixedly installed in the middle of the rotating shaft. The counterweight is fan-shaped, which provides good stability during rotation and allows for changes in the magnitude and direction of centrifugal force under high-speed rotation. The transmission disc is fixedly installed directly above the mounting plate.

[0014] The opening and closing plate includes a lower closing plate, an upper closing plate, a rotating ring, a fixed shaft, a limiting pin, and a fixing bolt. The lower closing plate is fixedly installed on the inner end face of the device body, the rotating ring is fixedly installed on one end of the lower closing plate, and the fixing bolt is fixedly installed on the outer side of the rotating ring. The fixed shaft is rotatably installed inside the rotating ring, the upper closing plate is fixedly installed on one side of the fixed shaft, and the limiting pin is fixedly installed between the outer side of the upper closing plate and the outer side of the lower closing plate. The opening and closing angle between the upper and lower closing plates is 10°-30°. The upper and lower closing plates perform periodic opening and closing movements within this angle range, which can provide a vertical vibration effect to the filter mechanism to improve working efficiency and prevent clogging.

[0015] To improve stability at the shaft connection, a connecting shaft is provided. The connecting shaft includes a meshing plate, a chuck, locking teeth, and limiting teeth. The chuck is fixedly installed in the middle of the rotating shaft, and the locking teeth are fixedly installed around the circumference of the chuck, with both sides of the locking teeth being concave. The meshing plate is fixedly installed on the chuck, and the limiting teeth are fixedly installed around the meshing plate. The limiting teeth are shaped like a plum blossom, with both sides being convex arcs. The convex arcs of the limiting teeth match the concave shapes of the locking teeth, thereby minimizing the gap between the chuck and the meshing plate when two chucks and one meshing plate are connected, thus enhancing the installation stability between each locking tooth and limiting tooth.

[0016] In the vibrating screen assembly, the vibration force needs to be smoothly transmitted to the filter assembly through a transmission disc. The transmission disc includes a transmission disc, a transmission spring, and a shaking disc. The transmission disc is fixedly installed on the upper end of the mounting plate. The transmission spring is fixedly installed on the transmission disc in a ring array. The transmission spring is preferably an industrial spring made of high-strength spring steel with high strength and a large cross-sectional radius to ensure the stability of its power transmission and the long service life. The shaking disc is fixedly installed above the transmission spring.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This invention improves upon existing filters by incorporating a filter assembly. By setting up a movable ball between the filter and the filter box, the probability of filter clogging can be reduced while maintaining filtration effectiveness. The coordinated movement of mirrored movable plates achieves a more efficient vibrating filtration effect, increasing vertical vibration. This, combined with the movable ball and release holes, further enhances filtration efficiency and reduces clogging. The structural cooperation between the movable plates allows the filter to move simultaneously within a certain amplitude along the x and y axes, ensuring the uniformity and integrity of the vibrating process.

[0019] 2. This invention improves the stability of the filter assembly by setting a stabilizer, and buffers and slows down the movement of the filter assembly by setting an energy-absorbing pad, ensuring smooth movement while reducing the noise generated by the filter assembly and the vibrating screen assembly; the energy-absorbing pad absorbs the power of the movement of the fixed movable plate, and the energy-absorbing pad drives the moving rod to move outward, converting the power into the elastic potential energy of the buffer spring, thereby converting and absorbing excess kinetic energy in the filter assembly, improving the stability of the movement and reducing noise hazards.

[0020] 3. This invention achieves efficient screening by setting up a vibrating screen assembly, enabling rapid material movement on the screen surface. It can quickly separate particles that meet the requirements, improving screening efficiency. The opening and closing plate provides further vertical movement support for the filter assembly, and the connecting shaft ensures stable connection between rotating shafts. The transmission disc primarily assists in transmitting the vibrating force to the filter assembly. By setting up transmission springs, it ensures stable output from the vibrating screen assembly, guaranteeing the reliability and durability of the filter assembly, allowing it to operate for extended periods in harsh working environments and possessing a long service life. Attached Figure Description

[0021] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram showing the location of the filter component of the present invention;

[0024] Figure 3 This is a schematic diagram of the filter screen and filter box of the present invention;

[0025] Figure 4 This is the present invention. Figure 2 Enlarged view from angle A;

[0026] Figure 5 This is the present invention. Figure 2 Enlarged view from B-side perspective;

[0027] Figure 6 This is a cross-sectional view of the stabilizer of the present invention;

[0028] Figure 7 This is a schematic diagram of the installation position of the vibrating screen assembly of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the vibrating screen assembly of the present invention;

[0030] Figure 9 This is a cross-sectional view of the vibrating screen assembly of the present invention;

[0031] Figure 10 This is the present invention. Figure 9 Enlarged view from C-angle;

[0032] Figure 11 This is an exploded view of the connecting shaft of the present invention;

[0033] Figure 12 This is the present invention. Figure 9 A magnified view from a mid-D perspective.

[0034] In the diagram: 1. Feed inlet; 2. Device body; 3. Overflow cover; 4. Discharge outlet; 5. Filter assembly; 51. Filter screen; 52. Filter box; 53. Movable ball; 54. Release hole; 541. Through hole; 55. Movable plate; 551. Fixed block; 552. Curved block; 553. Limiting block; 56. Stabilizer; 561. Buffer spring; 562. Fixed sleeve; 563. Moving rod; 564. Energy-absorbing pad; 57. Fixed plate; 571. Sliding hole; 572. 6. Sliding ball; 6. Vibrating screen assembly; 61. Drive motor; 62. Rotating shaft; 63. Counterweight; 64. Opening and closing plate; 641. Lower closing plate; 642. Upper closing plate; 643. Rotating ring; 644. Fixed shaft; 645. Limit pin; 646. Fixing bolt; 65. Connecting shaft; 651. Meshing plate; 652. Chuck; 653. Clamping tooth; 654. Limiting tooth; 66. Transmission disc; 661. Transmission disc; 662. Transmission spring; 663. Vibrating disc. Detailed Implementation

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] like Figures 1 to 11 As shown, the present invention provides a vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings, comprising an inlet 1, a device body 2, an overflow cover 3, an outlet 4, a filter assembly 5, and a vibrating screen assembly 6. The inlet 1 is fixedly installed above the device body 2, the overflow cover 3 is fixedly installed above the device body 2, the filter assembly 5 is horizontally installed on both sides of the device body 2, and two movable plates 55 fixedly installed inside the filter assembly 5 move in coordination, thereby limiting the vibration displacement of the filter assembly 5 within a certain range through kinetic energy conversion. The vibrating screen assembly 6 is installed below the filter assembly 5. When the irregularly shaped blocks inside the vibrating screen assembly 6 rotate at high speed, they generate centrifugal forces of different directions and magnitudes. The centrifugal forces act on the filter assembly 5, thereby driving the filter assembly 5 to perform periodic movements in both horizontal and vertical directions.

[0037] like Figure 2 and Figure 3As shown, the filter assembly 5 is the most important working mechanism in the vibrating screen mechanism for producing PVC elastomer waterproof coatings. It forms a transition space with the cooperation of the filter box 52 and the filter screen 51, ensuring that PVC particles are fully filtered. A movable ball 53 is added to increase the movement range of the PVC particles. The filter assembly 5 also includes a filter screen 51, a filter box 52, a movable ball 53, a release hole 54, a stabilizer 56, and a fixed plate 57. The movable plate 55 is fixedly installed on the upper end of the device body 2. Its structural design allows the upper and lower plates to mutually restrict the displacement along the x and y axes during movement. The filter box 52 is slidably installed above the device body 2. It transitions PVC particles of the correct shape and size, and works with the movable ball 53 to uniformly transfer them. Another movable plate 55 is fixedly installed below the filter box 52. The release holes 54 are linearly arrayed along the x and y axes at the lower end of the filter box 52. The release holes 54 allow qualified PVC particles to pass through. The filter screen 51 is fixedly installed on the upper end of the filter box 52. The filter screen 51 is used to screen qualified polyvinyl chloride (PVC) particles. The movable ball 53 is placed between the filter screen 51 and the filter box 52. The movable ball 53 is used to increase the movement range of the PVC particles. The surface of the movable ball 53 is frosted to reduce the friction between the movable ball 53 and the filter screen 51 and the filter box 52, so that no scratches will be generated when they come into contact, further reducing noise and extending service life. The height of the filter box 52 is 1.8 times the diameter of the movable ball 53 to ensure that the movable ball 53 has sufficient movement space during operation. A setting of less than 1.5 times will result in a small movement space for the movable ball 53, which will not be able to perfectly achieve the effect of increasing the movement range of the PVC particles. A setting of more than 2 times will result in a large vertical displacement of the movable ball 53, which will lead to greater wear on the filter screen 51 and the filter box 52 and will not be conducive to later maintenance. The fixing plate 57 is fixedly installed on both sides of the device body 2, and the stabilizer 56 is fixedly installed on the side of the fixing plate 57.

[0038] During operation, the vibrating screen assembly 6 drives the filter assembly 5 to vibrate. Polyvinyl chloride (PVC) particles enter the interior of the device body 2 through the feed inlet 1 and are screened on the filter screen 51. PVC particles of qualified size and shape will enter the filter box 52. The two movable plates 55 move up and down in coordination and limit the displacement on the xy axis through their hook shape, thereby controlling the vibration amplitude of the entire filter assembly 5 and ensuring the stable and uniform movement of the filter assembly 5.

[0039] like Figure 3As shown, the filter screen 51 has a mesh size of 140, which corresponds to a pore size of 106μm. The size of the selected qualified polyvinyl chloride (PVC) particles is within 100μm, so they can easily pass through the filter screen 51. A filter screen smaller than 120 mesh will result in poor PVC particle filtration and will not be able to screen larger particles. Setting it to a mesh size greater than 150 mesh will delay filtration efficiency and cause excessively long filtration time. The movable ball 53 is placed between the filter screen 51 and the filter box 52. The ratio of the radius of the movable ball 53 to the radius of the release hole 54 is 5:7. This ensures that the movable ball 53 will not pass through the release hole 54 while vibrating with the material to achieve an anti-clogging effect. The material of the movable ball 53 is preferably rigid plastic, and its density should be chosen to be as low as possible. Five through holes 541 are arranged in a ring around the release hole 54. Setting five through holes can further increase the filtration vibration efficiency. When the movable ball 53 is blocked in the release hole 54, the PVC particles can be filtered out through the through holes 541.

[0040] like Figure 4 As shown, the position of the movable plate 55 is mirror-symmetrical along the central axis of the filter screen 51. The movable plate 55 is hook-shaped, which helps to limit the displacement of the x and y axes and control the vibration range within a certain range, thereby ensuring that the vibration amplitude of the filter assembly 5 is relatively uniform and within a certain range during operation. The part of the movable plate 55 that is fixedly installed on the device body 2 and the filter box is the fixing block 551. The fixing block 551 is used to fix the opposite surfaces of the movable plate 55, the device body 2, and the filter box 52. The middle part of the movable plate 55 is the curved block 552. The curved block 552 is used to achieve better elastic buffering through the shape matching, thereby ensuring the vibration effect of the filter assembly 5. One end of the curved block 552 is the limiting block 553, which is used to limit the horizontal displacement.

[0041] During operation, the fixed plate 57 and one end of the device body 2 and filter box 52 are fixedly installed. During the vibrating screen movement of the filter box 52, the vertical displacement range is limited by the hook shape of the movable plate 55, thereby ensuring that the vertical vibration amplitude is controlled within a certain range each time, reducing noise and wear of parts, which is beneficial to protecting operators and extending the service life of parts; the limiting plate limits the horizontal vibration of the filter assembly 5, thereby protecting the movable plate 55 at the other end from wear and contact.

[0042] like Figure 5 and Figure 6As shown, the stabilizer 56 includes a buffer spring 561, a fixed sleeve 562, a moving rod 563, and an energy-absorbing pad 564. One end of the buffer spring 561 is fixedly installed on the outer side of the fixed plate 57. The buffer spring 561 is used to convert the kinetic energy transmitted from the energy-absorbing pad 564 into elastic potential energy and absorb it to reduce noise. The fixed sleeve 562 is fixedly installed on the other end of the buffer spring 561. The fixed sleeve 562 is used to fix one end of the moving rod 563. One end of the moving rod 563 is fixedly installed in the middle of the fixed sleeve 562. The moving rod 563 is used to convert kinetic energy and transmit it to the spring. The energy-absorbing pad 564 is fixedly installed on the other end of the moving rod 563. The energy-absorbing pad 564, together with other components, buffers the movable plate 55. The energy-absorbing pad 564 is trumpet-shaped. The mounting method of the fixing plate 57 is welding and bonding. One end of the buffer spring 561 is fixedly installed on the outer side of the fixing plate 57, and the fixing sleeve 562 is fixedly installed on the other end of the buffer spring 561. One end of the moving rod 563 is fixedly installed in the middle of the fixing sleeve 562, and the energy-absorbing pad 564 is fixedly installed on the other end of the moving rod 563. The energy-absorbing pad 564 is trumpet-shaped. The trumpet shape helps to increase the force-bearing area of ​​the energy-absorbing pad 564, thereby reducing the impact force brought by the fixed movable plate 55. The preferred material of the energy-absorbing pad 564 is polyoxymethylene and polypropylene. These two materials have high strength and good elasticity, which can maintain the structural strength of their shape while withstanding impact force.

[0043] During operation, the energy-absorbing pad 564, driven by the impact and shock of the filter assembly 5, overcomes the elastic force of the buffer spring 561 and drives the moving rod 563 to move outward, thereby absorbing this kinetic energy and converting it into elastic potential energy. During the rebound process, this elastic potential energy is converted into power in the opposite direction. Thus, only a small amount of power is needed to achieve a uniform and controllable vibrating screen effect. In a factory assembly line, this helps to save a lot of energy resources and reduce costs. To ensure that the vibrating screen displacement of the filter assembly 5 is always within a certain range, the stabilizer 56 is used to correct and limit it, ensuring stability and extending service life.

[0044] like Figure 6As shown, a sliding hole 571 is provided at the diagonal intersection of the fixed plate 57. This diagonal intersection enhances the installation stability of the fixed plate 57. The diameter of the sliding hole 571 is 1.15 times the diameter of the moving rod 563. If the diameter is less than 1.1 times, the moving rod 563 experiences greater resistance during sliding, hindering the conversion of kinetic energy. If the diameter is greater than 1.2 times, the movement of the moving rod 563 is not restricted by the sliding hole 571, resulting in uncontrollable movement and increased noise and instability. A sliding ball 572 is engaged with the surface of the sliding hole 571. The sliding ball 572 converts the sliding friction between the moving rod 563 and the sliding hole 571 into rolling friction, thereby reducing friction and ensuring the rapid sliding effect of the moving rod 563. The volume of the sliding ball 572 inside the fixed plate 57 is 70% of its volume. A volume less than 60% results in poor engagement and insufficient structural strength. A volume greater than 80% results in an excessively small protruding portion, failing to guarantee the conversion rate of sliding friction to rolling friction.

[0045] like Figure 7 , Figure 8 and Figure 9 As shown, the vibrating screen assembly 6 achieves continuous changes in the magnitude and direction of centrifugal force by rapidly rotating a shaped block, thereby driving the entire vibrating screen assembly 6 to vibrate. The vibrating screen assembly 6 includes a drive motor 61, a rotating shaft 62, a counterweight 63, an opening and closing plate 64, a connecting shaft 65, and a transmission disc 66. One end of the opening and closing plate 64 is fixedly installed inside the lower end of the device body 2. The opening and closing plate 64 is used to realize the vertical displacement of the vibrating screen assembly 6. The connecting shaft 65 is installed in the middle of the opening and closing plate 64 and is used to provide power for the vibrating screen. The mounting plate is fixedly installed on the opening and closing plate 64. Above the composite plate 64, the mounting plate is used to install the connecting shaft 65. The drive motor 61 is fixedly installed on the side of the device body 2. The rotating shaft 62 is fixedly installed on the inner end of the drive motor 61. The rotating shaft 62 is used to rotate the counterweight 63 under the drive of the drive motor 61. The counterweight 63 is fixedly installed in the middle of the rotating shaft 62. The counterweight 63 is fan-shaped. The fan-shaped structure has good stability during rotation and can meet the requirement of changing the magnitude and direction of centrifugal force under high-speed rotation. The transmission disk 66 is fixedly installed directly above the mounting plate.

[0046] like Figure 10 and Figure 12As shown, the opening and closing plate 64 includes a lower closing plate 641, an upper closing plate 642, a rotating ring 643, a fixed shaft 644, a limiting pin 645, and a fixing bolt 646. The lower closing plate 641 is fixedly installed on the inner end face of the device body 2 and is used to fix the vibrating screen assembly 6 inside the device body 2. The rotating ring 643 is fixedly installed on one end of the lower closing plate 641 and is used to realize the opening and closing action between the upper closing plate 642 and the lower closing plate 641. The fixing bolt 646 is fixedly installed on the outer side of the rotating ring 643, and the fixing screw is used to assist in fixing the rotating ring 643. The fixed shaft 644 is rotatably mounted inside the rotating ring 643. The fixed shaft 644 is used to provide a rotation axis 62-direction restriction for the rotating ring 643. The upper plate 642 is fixedly mounted on one side of the fixed shaft 644. The limiting pin 645 is fixedly mounted between the outer side of the upper plate 642 and the outer side of the lower plate 641. The opening and closing angle between the upper plate 642 and the lower plate 641 is 10°-30°. The upper plate 642 and the lower plate 641 perform periodic opening and closing movements within this angle range, which can provide a vertical vibration effect to the filter screen 51 mechanism to improve working efficiency and prevent clogging.

[0047] During operation, the drive motor 61 drives the rotating shaft 62 to rotate rapidly. The mounting blocks installed on the rotating shaft 62 generate centrifugal forces of different magnitudes and directions. The opening and closing plate 64 is used to stabilize the vertical vibration force. The transmission disc 66 smoothly handles the vibration force and vibrates the filter assembly 5.

[0048] like Figure 11 As shown, a connecting shaft 65 is provided at the shaft connection to improve its stability. The connecting shaft 65 includes a meshing plate 651, a chuck 652, locking teeth 653, and limiting teeth 654. The chuck 652 is fixedly installed in the middle of the rotating shaft 62 and is used to cooperate with the meshing plate 651 for rotational limiting. The locking teeth 653 are fixedly installed around the circumference of the chuck 652 and are used to tightly cooperate with the limiting teeth 654. The two sides of the locking teeth 653 are set to be concave. The meshing plate 651... The limiting teeth 654 are fixedly installed on the chuck 652 and are fixedly installed around the engagement piece 651. The limiting teeth 654 are shaped like plum blossoms, and the two sides of the limiting teeth 654 are convex arcs. The convex arcs of the limiting teeth 654 match the concave shape of the chuck teeth 653. This ensures that when two chucks 652 and one engagement piece 651 are connected, the gap between the chucks 652 and the engagement piece 651 is as small as possible, thereby enhancing the installation stability between each chuck tooth 653 and the limiting teeth 654.

[0049] like Figure 8As shown, in the vibrating screen assembly 6, the vibration force needs to be smoothly transmitted to the filter assembly 5 through the transmission disc 66. The transmission disc 66 includes a transmission disc 661, a transmission spring 662, and a shaking disc 663. The transmission disc 661 is fixedly installed on the upper end of the mounting plate. The transmission spring 662 is fixedly installed in a ring array on the transmission disc 661. The transmission spring 662 is preferably an industrial spring made of high-strength spring steel with high strength and a large cross-sectional radius to ensure the stability of its power transmission and the long service life. The shaking disc 663 is fixedly installed above the transmission spring 662.

[0050] During operation, the vibrating screen assembly 6 drives the filter assembly 5 to vibrate. Polyvinyl chloride (PVC) particles enter the device body 2 through the feed inlet 1 and are screened on the filter screen 51. PVC particles of the correct size and shape enter the filter box 52. Two movable plates 55 move vertically in coordination, using their hook-like shapes to limit displacement along the x and y axes. A fixed plate 57 is fixedly installed on one end of the device body 2 and the filter box 52. During the vibrating screen movement of the filter box 52, the hook-like shape of the movable plates 55 limits the vertical displacement range, ensuring that the vertical vibration amplitude is controlled within a certain range each time. This reduces noise and wear on components, protecting operators and extending the service life of components. The limiting plate also controls the filter... The horizontal vibration of component 5 is limited. Under the impact of the filter component 5, the energy-absorbing pad 564 overcomes the elastic force of the buffer spring 561 and drives the moving rod 563 to move outward, thereby absorbing this part of the kinetic energy and converting it into elastic potential energy. During the rebound process, this part of the elastic potential energy is converted into the opposite force to ensure that the vibration displacement of the filter component 5 is always within a certain range. The stabilizer 56 is used to correct and limit it. The drive motor 61 drives the rotating shaft 62 to rotate rapidly. The mounting block installed on the rotating shaft 62 rotates and generates centrifugal forces of different magnitudes and directions. The opening and closing plate 64 is used to stabilize the vertical vibration force. The transmission disc 66 smoothly processes the vibration force and vibrates the filter component 5.

[0051] The technical features disclosed above are not limited to combinations of those disclosed with other features, and the general principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings, characterized in that, The device includes an inlet (1), a main body (2), an overflow cover (3), an outlet (4), a filter assembly (5), and a vibrating screen assembly (6). The inlet (1) is fixedly installed on the top of the main body (2), the overflow cover (3) is fixedly installed on the top of the main body (2), the filter assembly (5) is horizontally installed on both sides of the main body (2), and two movable plates (55) fixedly installed inside the filter assembly (5) move in coordination. The movable plates (55) limit the vibration displacement of the filter assembly (5) within a certain range by converting kinetic energy. The vibrating screen assembly (6) is installed below the filter assembly (5). When the irregularly shaped blocks inside the vibrating screen assembly (6) rotate at high speed, they generate centrifugal forces of different directions and magnitudes. The centrifugal forces act on the filter assembly (5) and drive the filter assembly (5) to perform periodic movements in both horizontal and vertical directions.

2. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 1, characterized in that: The filter assembly (5) further includes a filter screen (51), a filter box (52), a movable ball (53), a release hole (54), a stabilizer (56), and a fixing plate (57); the movable plate (55) is fixedly installed on the upper end of the device body (2), the filter box (52) is slidably installed on the upper part of the device body (2), another movable plate (55) is fixedly installed below the filter box (52), and the release hole (54) is linearly arrayed along the xy axis at the lower end of the filter box (52); the filter screen (51) is fixedly installed on the upper end of the filter box (52), the movable ball (53) is placed between the filter screen (51) and the filter box (52), the surface of the movable ball (53) is frosted, the height of the filter box (52) is 1.5-2 times the diameter of the movable ball (53), the fixing plate (57) is fixedly installed on both sides of the device body (2), and the stabilizer (56) is fixedly installed on the side of the fixing plate (57).

3. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 2, characterized in that: The filter screen (51) has a mesh size of 120-150; the release hole (54) has 4-6 through holes (541) arranged in a ring around its perimeter, and the ratio of the radius of the movable ball (53) to the radius of the release hole (54) is 5:

7.

4. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 2, characterized in that: The positions of the two movable plates (55) are mirror-symmetrical with respect to the central axis of the filter screen (51). The part of the movable plate (55) that is fixedly installed on the device body (2) and the filter box (52) is a fixing block (551). The middle part of the movable plate (55) is a curved block (552), and one end of the curved block (552) is a limiting block (553).

5. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coating according to claim 2, characterized in that: The stabilizer (56) includes a buffer spring (561), a fixed sleeve (562), a moving rod (563), and an energy-absorbing pad (564). One end of the buffer spring (561) is snapped onto the outer side of the fixed plate (57), the fixed sleeve (562) is snapped onto the other end of the buffer spring (561), one end of the moving rod (563) is fixedly installed in the middle of the fixed sleeve (562), and the energy-absorbing pad (564) is fixedly installed at the other end of the moving rod (563). The energy-absorbing pad (564) is shaped like a trumpet.

6. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coating according to claim 2, characterized in that: A sliding hole (571) is provided at the intersection of the diagonals of the fixed plate (57). The diameter of the sliding hole (571) is 1.1-1.2 times the diameter of the moving rod (563). A sliding ball (572) is engaged inside the sliding hole (571). The volume of the sliding ball (572) inside the fixed plate (57) is 60%-80% of the volume of the sliding ball (572).

7. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 1, characterized in that: The vibrating screen assembly (6) includes a drive motor (61), a rotating shaft (62), a counterweight (63), a hinge plate (64), a connecting shaft (65), and a transmission disc (66). One end of the hinge plate (64) is fixedly installed inside the device body (2). The connecting shaft (65) is installed in the middle of the hinge plate (64). The drive motor (61) is fixedly installed on the side of the device body (2). The rotating shaft (62) is fixedly installed inside the drive motor (61). The counterweight (63) is fixedly installed in the middle of the rotating shaft (62). The counterweight (63) is fan-shaped. The transmission disc (66) is fixedly installed directly above the rotating shaft (62).

8. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 7, characterized in that: The opening and closing plate (64) includes a lower closing plate (641), an upper closing plate (642), a rotating ring (643), a fixed shaft (644), a limiting pin (645), and a fixing bolt (646). The lower closing plate (641) is fixedly installed on the inner surface of the device body (2), the rotating ring (643) is fixedly installed on one end of the lower closing plate (641), and the fixing bolt (646) is fixedly installed on the outer side of the rotating ring (643). The fixed shaft (644) is rotatably installed inside the rotating ring (643), the upper closing plate (642) is fixedly installed on one side of the fixed shaft (644), and the limiting pin (645) is fixedly installed between the outer side of the upper closing plate (642) and the outer side of the lower closing plate (641). The opening and closing angle between the upper closing plate (642) and the lower closing plate (641) is 10°-30°.

9. The vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 8, characterized in that: The connecting shaft (65) includes a meshing plate (651), a chuck (652), a locking tooth (653), and a limiting tooth (654). The chuck (652) is fixedly installed in the middle of the rotating shaft (62). The locking tooth (653) is fixedly installed on the outer surface of the chuck (652). The two sides of the locking tooth (653) are set to be concave. The meshing plate (651) is fixedly installed on the chuck (652). The limiting tooth (654) is fixedly installed around the meshing plate (651). The limiting tooth (654) is shaped like a plum blossom. The two sides of the limiting tooth (654) are convex arc-shaped. The convex arc of the limiting tooth (654) matches the concave shape of the locking tooth (653).

10. A vibrating screen mechanism for producing polyvinyl chloride elastomer waterproof coatings according to claim 7, characterized in that: The transmission disk includes a transmission disc (661), a transmission spring (662), and a vibrating disc (663). The transmission disc (661) is fixedly installed directly above the rotating shaft (62). The transmission springs (662) are arranged in a ring array and fixedly installed on the transmission disc (661). The vibrating disc (663) is fixedly installed above the transmission springs (662).

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