Filtering device for polyester resin

Abstract

The utility model relates to the field of polyester resin production devices, in particular to a polyester resin filtering device which comprises a filtering kettle fixed to a rack, a feeding pipe is arranged at the top of the filtering kettle, a filtering cylinder rotationally connected with the filtering kettle is arranged at the bottom of the filtering kettle, and the filtering cylinder is driven by a motor to rotate. A discharging bin is arranged at the bottom of the filtering kettle, an annular supporting plate and an annular limiting plate are fixed to the filtering cylinder, the tail end of the supporting plate is arranged in the discharging bin and rotationally connected with the discharging bin, the tail end of the limiting plate is arranged in the discharging bin and rotationally connected with the discharging bin, and a discharging channel is formed between the limiting plate and the supporting plate. A discharging pipe is further fixed to the bottom of the discharging bin, a material supplementing pipe is arranged on the top of the filter cylinder, and a filter plate is further fixed in the filter cylinder and arranged around the material supplementing pipe. The device can realize resin filtration, the motor drives the filter cartridge to rotate, and rapid resin filtration is realized through centrifugal force.

Description

Technical Field

[0001] The invention relates to the field of polyester resin production devices, in particular to a polyester resin filtering device. Background Art

[0002] Polyester resin is a general term for polymer compounds formed by polycondensation of diols or dibasic acids or polyols and polyacids. Polyester resin is divided into saturated polyester resin and unsaturated polyester resin.

[0003] At present, polyester resin needs to be melted during production. The melted polyester resin is easily mixed with particulate matter. Therefore, the particulate matter needs to be filtered out to improve the production quality of the polyester resin. In the prior art, the filtration treatment of the molten polyester resin is mostly performed by placing the polyester resin on one side of the filter net, and relying on the gravity of the polyester resin to pass through the filter net to intercept the particulate matter. For example, patent application number: CN202121860181.7 discloses a polyester basket filter, including a basket filter body, the basket filter body includes a cylinder with a top through-arranged, a sealing cover is installed at the open end of the cylinder, and a plurality of hole rings are horizontally fixed on the bottom of the outer end face of the sealing cover, and also includes a filter assembly vertically installed inside the cylinder, the filter assembly includes an outer filter cartridge and an inner filter cartridge, and the outer filter cartridge and the inner filter cartridge are vertically plugged into the interior of the cylinder. When using the polyester basket filter for filtration, the material liquid is introduced from the liquid inlet of the cylinder, and the material liquid falls into the inner filter cartridge of the filter assembly. After being filtered through the filter holes on the inner filter cartridge, the material liquid enters the outer filter cartridge, and is discharged into the cylinder after passing through the filter holes on the outer filter cartridge. Then, the material liquid is discharged through the liquid outlet of the cylinder, thereby completing the filtration. However, due to the poor fluidity of the molten polyester resin, the molten polyester resin cannot quickly pass through the inner filter cartridge, thereby affecting the filtration efficiency and filtration effect.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0005] The object of the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a filtering device for polyester resin.

[0006] The present invention can be implemented by the following technical solutions:

[0007] The present invention discloses a filtering device for polyester resin, comprising a filtering kettle fixed on a frame, a feeding pipe is arranged on the top of the filtering kettle, a filtering cylinder rotatably connected to the filtering kettle is arranged on the bottom of the filtering kettle, the filtering cylinder is driven to rotate by a motor, a lower material bin is arranged on the bottom of the filtering kettle, an annular supporting plate and a limiting plate are fixed on the filtering cylinder, the end of the supporting plate is arranged in the lower material bin and rotatably connected to the lower material bin, the end of the limiting plate is arranged in the lower material bin and rotatably connected to the lower material bin, a discharging channel is formed between the limiting plate and the supporting plate, a lower material bin is also fixed with a lower material pipe, a feeding pipe is arranged on the top of the filtering cylinder, a filter plate is also fixed in the filtering cylinder, and the filter plate is arranged around the feeding pipe. The resin to be filtered is discharged into the filter kettle through the feed pipe, and the resin enters the filter cartridge. After being filtered through the filter plate, the resin enters the discharge bin and is discharged and collected through the discharge pipe. The filter cartridge is driven to rotate by a motor, and the resin in the filter cartridge performs centrifugal motion with the filter cartridge, and is filtered after quickly passing through the filter plate, and a negative pressure is formed in the filter cartridge. The resin outside the filter cartridge quickly enters the filter cartridge for filtration through the feed pipe. The device can realize resin filtration, and the filter cartridge is driven to rotate by a motor, and the resin is quickly filtered by centrifugal force.

[0008] Preferably, a slag collecting tank is provided below the filter plate, and a slag discharge pipe is fixed at the bottom of the slag collecting tank. Impurities stay on the filter plate, and the filter plate cross section is inclined. When the impurities rotate with the filter cylinder, the impurities gather in the slag collecting tank and are discharged through the slag discharge pipe for treatment.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] The device can realize resin filtration, and the filter cartridge is driven to rotate by a motor, so that the resin can be quickly filtered by centrifugal force. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 A top view of the present invention;

[0014] Figure 3 for Figure 2 Sectional view at AA;

[0015] In the figure: 1. Filter kettle; 2. Feed pipe; 3. Discharge bin; 4. Discharge pipe; 5. Filter cartridge; 6. Motor; 7. Feed pipe; 8. Support plate; 9. Limit plate; 10. Discharge channel; 11. Filter plate; 12. Slag trough; 13. Slag discharge pipe; DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0017] Embodiment 1:

[0018] like Figures 1 to 3 As shown, this embodiment discloses a filtering device for polyester resin, comprising a filtering kettle 1 fixed on a frame, a feeding pipe 2 is arranged on the top of the filtering kettle 1, a filtering cartridge 5 rotatably connected to the filtering kettle 1 is arranged on the bottom of the filtering kettle 1, the filtering cartridge 5 is driven to rotate by a motor 6, a feeding bin 3 is arranged at the bottom of the filtering kettle 1, an annular supporting plate 8 and a limiting plate 9 are fixed on the filtering cartridge 5, the end of the supporting plate 8 is arranged in the feeding bin 3 and is rotatably connected to the feeding bin 3, the end of the limiting plate 9 is arranged in the feeding bin 3 and is rotatably connected to the feeding bin 3, a discharging channel 10 is formed between the limiting plate 9 and the supporting plate 8, a feeding pipe 4 is also fixed at the bottom of the feeding bin 3, a feeding pipe 7 is arranged on the top of the filtering cartridge 5, a filtering plate 11 is also fixed in the filtering cartridge 5, and the filtering plate 11 is arranged around the feeding pipe 7. The resin to be filtered is discharged into the filter kettle 1 through the feed pipe 2, and the resin enters the filter cartridge 5. The resin enters the discharge bin 3 after being filtered through the filter plate 11 and is discharged and collected through the discharge pipe 4, and the filter cartridge 5 is driven to rotate by the motor 6. The resin in the filter cartridge 5 performs centrifugal motion with the filter cartridge 5, and is filtered after quickly passing through the filter plate 11, and a negative pressure is formed in the filter cartridge 5. The resin outside the filter cartridge 5 quickly enters the filter cartridge 5 for filtration through the feed pipe 7. The device can realize resin filtration, and the filter cartridge 5 is driven to rotate by the motor 6, so that the resin is quickly filtered by centrifugal force.

[0019] Embodiment 2:

[0020] This embodiment discloses a polyester resin filtering device. Based on the structure and principle of the first embodiment, a slag collecting tank 12 is provided below the filter plate 11 of this embodiment, and a slag discharge pipe 13 is fixed to the bottom of the slag collecting tank 12. Impurities stay on the filter plate 11, and the cross section of the filter plate 11 is inclined. When the impurities rotate with the filter cylinder 5, the impurities gather in the slag collecting tank 12 and are discharged by opening the slag discharge pipe 13.

[0021] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A polyester resin filtering device, comprising a filtering kettle fixed on a frame, characterized in that: A feed pipe is arranged on the top of the filter kettle, a filter cartridge rotatably connected to the filter kettle is arranged at the bottom of the filter kettle, the filter cartridge is driven to rotate by a motor, a lower feed bin is arranged at the bottom of the filter kettle, an annular support plate and a limit plate are fixed on the filter cartridge, the end of the support plate is arranged in the lower feed bin and rotatably connected to the lower feed bin, the end of the limit plate is arranged in the lower feed bin and rotatably connected to the lower feed bin, a discharge channel is formed between the limit plate and the support plate, a lower feed pipe is also fixed at the bottom of the lower feed bin, a feeding pipe is arranged at the top of the filter cartridge, a filter plate is also fixed in the filter cartridge, and the filter plate is arranged around the feeding pipe.

2. The polyester resin filtering device according to claim 1, characterized in that: A slag collecting groove is arranged below the filter plate, and a slag discharge pipe is fixed at the bottom of the slag collecting groove.

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