An agglomeration collection device for EVA particle slurry

Abstract

This utility model belongs to the field of dryer technology, specifically disclosing an agglomeration collection device for EVA particle slurry. It includes a collection box with a screen inside, a collection port fixedly connected to the box, the screen tilted towards the collection port, a rotating shaft rotatably connected to the collection port, a raft plate fixedly connected to the shaft, protrusions on the circumference of the raft plate, and a groove on the inner side of the collection port, the protrusions and groove engaging. The raft plate has a handle and a cleaning component for cleaning agglomerates. The operator periodically rotates the raft plate upwards around the shaft using the handle to open the collection port, allowing the agglomerated particles to be cleaned out. After cleaning, rotating the raft plate again engages the protrusions and groove, strengthening the raft plate's seal and reducing leakage at the collection port. This solves the problem of leakage at the collection port due to the impact and gravity of the EVA particle slurry, where the collection port is only sealed by the raft plate.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, specifically to an agglomeration collection device for EVA particle slurry. Background Technology

[0002] The EVA granule slurry originates from the post-polymerization granulation process of EVA. First, molten EVA generated in the polymerization reactor undergoes flash evaporation to remove unreacted monomers, and then it is continuously fed into an underwater granulation system. In this system, molten EVA is extruded into strips through a die and immediately cut by a cutter in a cavity filled with circulating cooling water to form regular granules. At the same time, the water flow rapidly cools and solidifies the granules to form a slurry. This mixture of process water containing solid EVA granules is the EVA granule slurry that is transported to the centrifugal dewatering machine.

[0003] Sometimes, the EVA granule slurry prepared in the post-processing granulation step contains agglomerated EVA particles. Directly introducing these agglomerated EVA particles into the dryer will affect its service life: large pieces of material may form "dead zones" within the dryer due to uneven centrifugal force distribution, further hindering heat and mass transfer; agglomerated particles may impact the dryer's inner wall or agitator under centrifugal force, accelerating equipment wear; and they may clog the discharge port or atomizer nozzles, leading to equipment shutdown and cleaning. The agglomeration is caused by electrostatic adsorption, insufficient stacking pressure, or inadequate stirring intensity during the post-processing granulation step, resulting in agglomeration in the EVA granule slurry. Current methods for capturing agglomerates involve passing the EVA granule slurry through a screen to collect the agglomerates, followed by timely removal through an openable collection port. However, the collection port is only sealed by a raft plate, and the impact and gravity of the EVA granule slurry cause leakage of water and material, resulting in waste of both material and water. Utility Model Content

[0004] The purpose of this utility model is to provide an agglomeration collection device for EVA particle slurry, so as to solve the problem that when collecting agglomerated particles in EVA particle slurry, the collection port is only sealed by a raft plate, and water and material leakage occurs at the collection port due to the impact and gravity of the EVA particle slurry.

[0005] To achieve the above objectives, the basic solution provided by this utility model is as follows: an EVA particle slurry agglomeration collection device, including a collection box, a screen inside the collection box, a collection port fixedly connected to the collection box, the screen tilting towards the collection port, a rotating shaft rotatably connected to the collection port, a raft plate fixedly connected to the rotating shaft, protrusions on the periphery of the raft plate, a groove on the inner side of the collection port, the protrusions and the groove engaging, the protrusions and the groove being made of fluororubber, a handle on the raft plate, and a cleaning component for cleaning up the agglomerates on the raft plate.

[0006] The principle and beneficial effects of this utility model are as follows: When water slurry containing clumped EVA particles enters the collection box, unclumped EVA particles can pass through the screen normally, while clumped EVA particles are collected at the collection port through the inclined screen. The operator periodically pulls the raft plate upwards by the handle, and the raft plate rotates upwards around the pivot. After opening the collection port, the operator can clean out the clumped particles. After cleaning, the raft plate is rotated again to engage the protrusions and grooves. Fluororubber is resistant to high temperature and chemical corrosion, which can enhance the sealing of the raft plate, reduce water and material leakage at the collection port, and reduce the waste of materials and water.

[0007] Option 2, a preferred option of the basic scheme, includes a scraper consisting of two obliquely joined plates, bolted to a raft plate, with a rubber plate bolted to the scraper. The scraper and raft plate are bolted together at an 89° angle. When some EVA particle slurry flows onto the scraper, it flows along the scraper onto the screen because the scraper is made of two obliquely joined plates. When the raft plate rotates upwards towards the outside of the collection port, the scraper rotates with the raft plate, scraping out the clumps of EVA particles. The bolted rubber plate can fit against the bottom of the collection port, reducing the amount of clumps of EVA particles remaining in the groove of the collection port.

[0008] Option 3, which is the preferred option of the basic option, has a baffle fixed to the collection port; when the scraper scrapes out the clumps of EVA particles, the baffle can reduce the spillage of the clumps of EVA particles.

[0009] Option 4, which is a preferred option of the basic option, is equipped with a photoelectric sensor inside the collection port. The photoelectric sensor can be an infrared through-beam sensor. When the infrared beam of the infrared through-beam sensor is blocked by the clumped EVA particles, the infrared through-beam sensor transmits a signal to the central control platform, and the operator can clean up the clumped EVA particles.

[0010] Option 5, a preferred option of Option 4, features a seal on the rotating shaft, with a motor mounted on the seal. The motor is a DC geared motor, electrically connected to an electrical control box, which in turn is connected to a photoelectric sensor. This photoelectric sensor can be an infrared beam sensor. When the infrared beam of the infrared beam sensor is blocked by clumped EVA particles, the sensor transmits a signal indicating the blocked beam to the electrical control box. The control box then starts the motor, causing the raft and scraper to rotate and clean the clumped EVA particles. After rotating a certain angle, the control box reverses the motor, returning the raft and scraper to their original positions until the next cleaning of clumped EVA particles. This allows for automated control, reducing the operator's workload.

[0011] Option 6 is a preferred option of the basic option. The cross-section of the protrusion and groove is triangular, and the handle is embedded in the groove. When the triangular cross-section of the groove and protrusion is engaged, it can effectively resist the lateral displacement caused by the impact of EVA particle water slurry. The root of the triangular protrusion can disperse stress and increase the sealing performance of the raft plate. The embedded design flush with the raft plate reduces the protruding part and can save space. Attached Figure Description

[0012] Figure 1 This is a perspective view of an EVA particle slurry agglomeration trapping device according to the present invention;

[0013] Figure 2 This is a top view of an EVA particle slurry agglomeration trapping device according to the present invention;

[0014] Figure 3 This is a left view of an EVA particle slurry agglomeration trapping device according to the present invention;

[0015] Figure 4 yes Figure 3 Sectional view at point AA;

[0016] Figure 5 This is a perspective view of the EVA particle slurry agglomeration collection device of this utility model without the raft plate installed. Detailed Implementation

[0017] The present invention will be further described in detail below through specific embodiments:

[0018] The reference numerals in the accompanying drawings include: 1. collection box, 2. collection port, 3. motor, 4. screen, 5. raft plate, 6. rotating shaft, 7. protrusion, 8. groove, 9. scraper, 10. seal, 11. photoelectric sensor, 12. baffle, 13. handle, 14. rubber plate.

[0019] Example

[0020] like Figures 1 to 5As shown: A device for collecting agglomerates in EVA granular slurry includes a collection box 1, a screen 4 inside the collection box 1, a collection port 2 fixedly connected to the collection box 1, the screen 4 inclined towards the collection port 2, a baffle 12 fixedly connected to the collection port 2, a rotating shaft 6 rotatably connected to the collection port 2, a raft plate 5 fixedly connected to the rotating shaft 6, protrusions 7 on the periphery of the raft plate 5, a groove 8 on the inner side of the collection port 2, the protrusions 7 and the groove 8 engaging, the cross-section of the protrusions 7 and the groove 8 being triangular, a handle 13 on the raft plate 5, the handle 13 being embedded in the groove 8, and the raft plate 5... A cleaning assembly for cleaning up blocky materials is provided. The cleaning assembly includes a scraper 9, which is made of two plates that are obliquely fixed together. The scraper 9 and the raft plate 5 are bolted together at an 89° angle. A rubber plate 14 is bolted to the scraper 9. A photoelectric sensor 11 is provided inside the collection port 2. The photoelectric sensor 11 can be an infrared beam sensor. A seal 10 is provided on the rotating shaft 6. A motor 3 is provided on the seal 10. The motor 3 is a DC geared motor. An electrical control box is electrically connected to the motor 3. The photoelectric sensor 11 is electrically connected to the electrical control box. The photoelectric sensor 11 can be an infrared beam sensor.

[0021] The implementation method of this embodiment is as follows: When the water slurry containing agglomerated EVA particles enters the collection box 1, the unagglomerated EVA particles can pass through the screen 4 normally, while the agglomerated EVA particles are collected at the collection port 2 through the inclined screen 4. Some of the EVA particle water slurry flows onto the scraper 9. Since the scraper 9 is made of two plates obliquely connected, the EVA particle water slurry will flow along the scraper 9 onto the screen 4. When the infrared beam of the infrared beam sensor is blocked by the agglomerated EVA particles, the infrared beam sensor transmits the signal of the blocked beam to the control box. The control box controls the motor 3 to start. The rotation drives the raft plate 5 to rotate outward from the collection port 2. The raft plate 5 rotates upward around the rotating shaft 6. The scraper 9 rotates with the raft plate 5. The bolt-connected rubber plate 14 can fit against the bottom of the collection port 2, reducing the residual clumps of EVA particles in the groove 8 of the collection port 2 and cleaning the clumps of EVA particles. When the motor 3 rotates to a certain angle, the electrical control box controls the motor 3 to reverse, so that the raft plate 5 and the scraper 9 reverse back to their original positions until the next cleaning of clumps of EVA particles. When the scraper 9 scrapes out the clumps of EVA particles, the baffle 12 can reduce the scattering of clumps of EVA particles.

[0022] After cleaning, when motor 3 reverses and drives raft plate 5 back to its original position, it engages protrusion 7 and groove 8. The triangular cross-section of groove 8 and protrusion 7 can effectively resist the lateral displacement caused by the impact of EVA particle water slurry. The root of triangular protrusion 7 can disperse stress and increase the sealing performance of raft plate 5. Fluororubber is resistant to high temperature and chemical corrosion, which can strengthen the sealing of raft plate 5 and reduce water and material leakage from collection port 2. When the rubber plate 14 on scraper 9 needs to be replaced or the structure of collection port 2 malfunctions, raft plate 5 can be rotated upward by handle 13 to open collection port 2, replace rubber plate 14 on scraper 9 or repair collection port 2.

[0023] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A lump catching device for EVA granule water slurry, characterized by, Includes a collection box (1), a screen (4) is provided inside the collection box (1), a collection port (2) is fixedly connected to the collection box (1), the screen (4) is inclined towards the collection port (2), a rotating shaft (6) is rotatably connected to the collection port (2), a raft plate (5) is fixedly connected to the rotating shaft (6), a protrusion (7) is provided around the raft plate (5), a groove (8) is opened on the inner side of the collection port (2), the protrusion (7) and the groove (8) are engaged, a handle (13) is provided on the raft plate (5), and a cleaning component for cleaning up block materials is provided on the raft plate (5).

2. The agglomerate catching device for EVA granule water slurry according to claim 1, characterized in that The cleaning assembly includes a scraper (9), which is made of two plates that are obliquely connected. The scraper (9) is fixed to a raft plate (5), and a rubber plate (14) is bolted to the scraper (9).

3. The agglomerate catching device for EVA granule water slurry according to claim 1, wherein A baffle (12) is fixedly attached to the collection port (2).

4. The agglomerate catching device for EVA granule water slurry according to claim 1, wherein The collection port (2) is equipped with a photoelectric sensor (11).

5. The agglomerate catching device for EVA granule water slurry according to claim 4, wherein The rotating shaft (6) is provided with a seal (10), the seal (10) is provided with a motor (3), the motor (3) is electrically connected to an electrical control box, and the electrical control box is electrically connected to a photoelectric sensor (11).

6. The agglomerate catching device for EVA granule water slurry according to claim 1, wherein The cross-sections of the protrusion (7) and the groove (8) are triangular, and the handle (13) is an embedded groove.

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