Multistage filtering device of underwater granulator

Abstract

The utility model discloses a multi-stage filtering device of an underwater granulator. The multi-stage filtering device comprises a separator and a filtering component, the separator comprises a feeding pipe fixedly mounted at the top of the separator; the filtering assembly comprises a first-stage large block material filtering plate fixedly installed on the upper portion in the separator and a first extending filtering plate fixedly installed on one side of the first-stage large block material filtering plate. According to the multistage filtering device of the underwater granulator, a second-stage particulate matter filtering plate and a third-stage particulate matter filtering plate which are mounted at the upper end of the mounting plate in the separator can filter particulate matters in backflow water at the upper part while circularly moving up and down through a cam at the bottom; the rolling time of the particulate matters can be prolonged through a second extension filter plate and a third extension filter plate which are arranged on the outer side, so that residual water at the outer ends of the particulate matters can be uniformly vibrated off in the vertical shaking of the second extension filter plate and the third extension filter plate, and the particulate matters can be subsequently input into drying equipment to have high drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of underwater pelletizer technology, specifically to a multi-stage filtration device for an underwater pelletizer. Background Technology

[0002] An underwater pelletizer is a device that cuts molten plastic into pellets in an underwater environment after it is extruded through a die. The underwater pelletizer's filtration device is the core equipment in the plastic pelletizing production line. It is mainly used to remove large pieces and cooling water from the material, and then transport the filtered pellets to a dryer for drying.

[0003] Existing underwater pelletizer filtration devices often fail to evenly remove residual water droplets and moisture from the outer edges of particles during the separation and filtration of particulate matter in the return water. This negatively impacts the drying efficiency of the particles when fed into subsequent drying equipment. Therefore, we propose a multi-stage filtration device for underwater pelletizers. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A multi-stage filtration device for an underwater pelletizer includes: a separator and a filtration assembly; the separator includes a feed pipe fixedly installed at its top; the filtration assembly includes a primary large-piece filter plate fixedly installed at the upper part of the separator, a first extended filter plate fixedly installed on one side of the primary large-piece filter plate, an installation plate movably installed inside the separator, a secondary particulate filter plate and a tertiary particulate filter plate fixedly installed on the upper and lower sides of one end of the installation plate respectively, a second extended filter plate and a third extended filter plate fixedly installed on one side of the secondary particulate filter plate and the tertiary particulate filter plate respectively, and a cam movably installed at the bottom of the installation plate.

[0007] Preferably, a rotating shaft is fixedly installed in the middle of the cam and is movably installed inside the separator housing. A motor is also fixedly installed at the outer end of the rotating shaft and is fixed to the outer end of the separator housing.

[0008] Preferably, a central straight groove is also provided through the middle of the mounting plate.

[0009] Preferably, a restraint seat is also movably installed in the central straight groove, and the inner end of the restraint seat is fixed to the inner wall of the separator.

[0010] Preferably, both the second and third extended filter plates are further provided with baffle strips fixedly installed at their upper ends, and the second extended filter plate is further provided with a baffle plate fixedly installed at its bottom.

[0011] Preferably, the separator is further provided with a discharge port on one side, and the discharge port is located outside the second and third extended filter plates.

[0012] Preferably, a large material outlet is provided on one side of the separator, and the large material outlet is located outside the first extended filter plate. A guide plate is also fixedly installed at the inner end of the large material outlet.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the secondary and tertiary particulate filter plates installed on the upper part of the mounting plate inside the separator can filter out particulate matter in the upper return water by moving up and down in a cyclical manner through the bottom cam. At the same time, the second and third extended filter plates set on their outer sides can extend the time for particulate matter to roll off. In this way, the residual water at the outer end can be evenly shaken off by the up and down shaking of the second and third extended filter plates, so that the subsequent input into the drying equipment has a fast drying efficiency.

[0015] 2. In this utility model, the primary large-piece filter plate at the top of the separator is mainly used to filter out large particles present in the initial cutting of the pelletizer. At the same time, the first extended filter plate extending outward can also prolong and slow down the rolling time of the particles at its upper end, so as to filter out the particles rolling down in the return water again and guide them to the upper end of the secondary particle filter plate through the guide plate at the bottom. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is another perspective view of the present invention;

[0018] Figure 3 This is a side sectional view of the present invention;

[0019] Figure 4 This utility model Figure 3 A magnified view of A in the middle.

[0020] Figure label:

[0021] 100. Separator; 101. Feed pipe;

[0022] 200. Filter assembly; 201. Primary bulk material filter plate; 202. First extended filter plate; 203. Mounting plate; 204. Secondary particulate matter filter plate; 205. Tertiary particulate matter filter plate; 206. Second extended filter plate; 207. Third extended filter plate; 208. Cam; 209. Rotating shaft; 210. Motor; 211. Central straight groove; 212. Restraint seat; 213. Baffle bar; 214. Baffle plate; 215. Discharge port; 216. Bulk material outlet; 217. Guide plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0024] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a multi-stage filtration device for an underwater pelletizer.

[0025] Example 1:

[0026] Combination Figure 1-4As shown, the present invention provides a multi-stage filtration device for an underwater pelletizer, comprising: a separator 100 and a filtration assembly 200; the separator 100 includes a feed pipe 101 fixedly installed at its top; the filtration assembly 200 includes a primary large-piece filter plate 201 fixedly installed at the upper part of the separator 100, a first extended filter plate 202 fixedly installed on one side of the primary large-piece filter plate 201, an installation plate 203 movably installed within the separator 100, and secondary pelletizing plates fixedly installed on the upper and lower sides of one end of the installation plate 203 respectively. The second extended filter plate 206 and the third extended filter plate 207 are respectively fixedly installed on one side of the particulate filter plate 204 and the third-stage particulate filter plate 205, the second-stage particulate filter plate 204 and the third-stage particulate filter plate 205, and the cam 208 is movably installed at the bottom of the mounting plate 203. The cam 208 also has a rotating shaft 209 fixedly installed in the middle, and the rotating shaft 209 is movably installed in the separator 100 housing. The outer end of the rotating shaft 209 is also fixedly installed with a motor 210, and the motor 210 is fixed to the outer end of the separator 100 housing. A central straight groove 211 is also provided through the middle of the mounting plate 203. A restraint seat 212 is movably installed in the central straight groove 211, and the inner end of the restraint seat 212 is fixed to the inner wall of the separator 100. A baffle strip 213 is also fixedly installed on the upper end of the second extended filter plate 206 and the third extended filter plate 207. A baffle plate 214 is also fixedly installed at the bottom of the second extended filter plate 206. A discharge port 215 is also provided on one side of the separator 100, and the discharge port 215 is located between the second extended filter plate 206 and the third extended filter plate 207. Outside plate 207, on one side of separator 100, there is also a large material outlet 216, and the large material outlet 216 is located outside the first extended filter plate 202. A guide plate 217 is also fixedly installed at the inner end of the large material outlet 216. The first-stage large material filter plate 201 and the first extended filter plate 202 are the same large-pore filter plates. The second-stage particulate filter plate 204 and the second extended filter plate 206 are the same medium-pore filter plates. The third-stage particulate filter plate 205 and the third extended filter plate 207 are the same small-pore filter plates.

[0027] Specifically, an underwater pelletizer is a device that extrudes molten plastic through a die and cuts it in an underwater environment to obtain plastic pellets. The underwater pelletizer's filtration device is the core equipment in the plastic pelletizing production line, mainly used to remove large pieces and cooling water from the material, so that the filtered and collected pellets can be transported to a dryer for drying. The secondary particle removal plate 204 and the tertiary particle removal plate 205 installed on the upper end of the mounting plate 203 in the separator 100 can complete the removal of particles in the upper return water by circulating up and down through the cam 208 at the bottom. While filtering, the second and third extended filter plates 206 and 207 on its outer side can prolong the rolling time of the particles. This allows for the even shaking off of residual moisture and water droplets at the outer end through the up-and-down vibration of the second and third extended filter plates 206 and 207, ensuring rapid drying efficiency when fed into the drying equipment. The primary large-particle filter plate 201 at the top of the separator 100 is mainly used to filter out large particles present in the initial cutting of the pelletizer. Simultaneously, the first extended filter plate 202 extending from its outer side can also prolong and slow down the movement of the particles at the upper end. The rolling time allows for the re-filtering of particles from the return water, which are then guided back to the upper end of the secondary particulate filter plate 204 via the bottom guide plate 217. The cam 208 driven by the motor 210 is mainly used for the overall up-and-down cyclic shaking of the mounting plate 203. The central straight groove 211 opened in the center of the mounting plate 203, and the inner square structure restraint seat 212, are mainly used for the left and right restraint of the mounting plate 203 to ensure stable up-and-down movement. The blocking strips 213 at the upper ends of the second extended filter plate 206 and the third extended filter plate 207 are mainly used for the second extended filter plate 206. The 06 and the third extended filter plate 207 reduce the rolling speed of the particles, so as to more evenly shake off the residual moisture and water droplets at the outer end during vibration. The baffle plate 214 at the bottom of the second extended filter plate 206 mainly prevents the water droplets shaken off at the upper end from moving into the discharge port 215 and flowing into the drying equipment at the outer end through the discharge port 215. During the initial cutting of the underwater pelletizer, there will be large pieces of unevenly cut material. The large pieces are filtered by the first-stage large material filter plate 201 and discharged through the large material outlet 216 at the outer end after being filtered by the return water input feed pipe 101.

[0028] Working principle and usage process of this utility model:

[0029] The return water carrying particles in the underwater pelletizer flows into the separator 100 through the feed pipe 101 at the top of the separator 100. It first flows to the upper end of the primary large-piece filter plate 201 in the upper part of the separator 100 to remove large pieces. When qualified particles accidentally roll down the primary large-piece filter plate 201, the first extended filter plate 202 on its outer side can also decelerate the qualified particles, causing them to fall to the lower end and enter the upper end of the secondary particle filter plate 204 along the guide plate 217. The lower secondary particle filter plate 204 and the tertiary particle filter plate 20... 5. Driven by the bottom cam 208, they all reciprocate up and down, thereby filtering out particulate matter at their upper ends and shaking the particulate matter. This causes the particulate matter to decelerate and roll down along the second extended filter plate 206 and the third extended filter plate 207 on their outer sides during the shaking. In the rolling and vibration, the residual moisture and water droplets at the outer ends of the particulate matter are evenly shaken off. After the residual moisture and water droplets at the outer ends are shaken off, the particulate matter is fed into the drying equipment through the discharge port 215 for drying and discharge. At the same time, the water filtered in the separator 100 will also flow back to the water tank at the bottom.

[0030] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-stage filtration device for an underwater pelletizer, characterized in that, include: Separator (100), filter assembly (200); The separator (100) includes a feed pipe (101) fixedly mounted on its top; The filtration assembly (200) includes a primary bulk material filter plate (201) fixedly installed in the upper part of the separator (100), a first extended filter plate (202) fixedly installed on one side of the primary bulk material filter plate (201), an installation plate (203) movably installed in the separator (100), a secondary particulate filter plate (204) and a tertiary particulate filter plate (205) fixedly installed on the upper and lower sides of one end of the installation plate (203), a second extended filter plate (206) and a third extended filter plate (207) fixedly installed on one side of the secondary particulate filter plate (204) and the tertiary particulate filter plate (205), and a cam (208) movably installed at the bottom of the installation plate (203).

2. The underwater pelletizer multi-stage filtration device according to claim 1, characterized in that, A rotating shaft (209) is fixedly installed in the middle of the cam (208), and the rotating shaft (209) is movably installed in the separator (100) housing. A motor (210) is fixedly installed at the outer end of the rotating shaft (209), and the motor (210) is fixed at the outer end of the separator (100) housing.

3. The underwater pelletizer multi-stage filtration device according to claim 1, characterized in that, The mounting plate (203) also has a central straight groove (211) running through its center.

4. The underwater pelletizer multi-stage filtration device according to claim 3, characterized in that, A restraint seat (212) is also movably installed in the central straight groove (211), and the inner end of the restraint seat (212) is fixed to the inner wall of the separator (100).

5. A multi-stage filtration device for an underwater pelletizer according to claim 1, characterized in that, The upper ends of the second extended filter plate (206) and the third extended filter plate (207) are also fixedly equipped with blocking strips (213), and the bottom of the second extended filter plate (206) is also fixedly equipped with a blocking plate (214).

6. The underwater pelletizer multi-stage filtration device according to claim 1, characterized in that, The separator (100) is also provided with a discharge port (215) on one side, and the discharge port (215) is located outside the second extended filter plate (206) and the third extended filter plate (207).

7. The underwater pelletizer multi-stage filtration device according to claim 1, characterized in that, The separator (100) is also provided with a large material outlet (216) on one side, and the large material outlet (216) is located outside the first extended filter plate (202). A guide plate (217) is also fixedly installed at the inner end of the large material outlet (216).

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