CN217961552U

CN217961552U - Polyester production is with exempting from to tear abluent many baskets filter open

Info

Publication number: CN217961552U
Application number: CN202221087829.6U
Authority: CN
Inventors: 张胜国; 韩君炎; 张绍英; 傅立峰; 朱秀庆; 叶金明; 朱行峰
Original assignee: RONGSHENG PETROCHEMICAL CO Ltd
Current assignee: RONGSHENG PETROCHEMICAL CO Ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-12-06
Anticipated expiration: 2032-05-06

Abstract

The utility model discloses a polyester production is with exempting from to tear open abluent many baskets of filter aims at solving polyester production and need tear open the machine and wash when wasing with many baskets of filter, operates inconveniently, and work efficiency is low not enough. The utility model comprises an installation cylinder and a plurality of filtering baskets arranged in the installation cylinder, wherein a supporting clapboard is arranged at the lower part in the installation cylinder, the supporting clapboard divides the interior of the installation cylinder into a liquid inlet cavity and a liquid outlet cavity, the filtering baskets are arranged on the supporting clapboard, the lower end of each filtering basket is provided with a liquid inlet, and the liquid inlet is communicated with the liquid inlet cavity; a plurality of flushing nozzles arranged towards the filter basket are arranged in the liquid inlet cavity, the mounting cylinder is connected with a flushing pipe, and the flushing nozzles are connected with the flushing pipe; the mounting cylinder is provided with an EG inlet and an EG draining port communicated with the liquid inlet cavity, and the mounting cylinder is provided with an EG outlet, a compressed air inlet and a vent port communicated with the liquid outlet cavity. The multi-basket filter realizes disassembly-free cleaning, is convenient to operate, and improves the working efficiency.

Description

Polyester production is with exempting from to tear abluent many baskets filter open

Technical Field

The utility model relates to a polyester apparatus for producing, more specifically say, it relates to a polyester production is with exempting from to tear open abluent many baskets of filter.

Background

Ethylene Glycol (EG) is used as a main raw material for polyester production, and the ethylene glycol in the production process is completely recycled, so that the raw material consumption is reduced. In the production device adopting the three-kettle process technology, excessive EG needs to be injected into the pre-polycondensation kettle, the EG is vaporized in the reaction kettle, bubbles are formed under the vacuum condition, and the heat transfer and the reaction are enhanced. And the EG generated by the reaction and the excessive EG injected enter a spray condenser and are condensed and recovered.

EG produced by the pre-polycondensation reaction carries a large amount of granular oligomer impurities, and the oligomer particles are removed by a filter usually with the filtering precision of 20 meshes (corresponding to the particle size of the impurities being 0.8 mm). One filter and 2 filters are usually provided. The filter is usually of a vertical straight-through positive filtration type or a multi-basket type, the diameter of the filter is usually more than or equal to 800mm, and about 10 filter baskets are arranged.

The filter basket of the filter that is off-line is regularly switched and cleaned, typically at filter run times. The upper end enclosure, the connecting flange and the fastening bolt need to be disassembled for cleaning the filter basket, the filter basket is cleaned one by one, and the filter basket, the upper end enclosure and the connecting flange are installed again after the filter basket is cleaned. The upper end enclosure and the connecting flange are heavy and inconvenient to disassemble and assemble. The upper end socket and the connecting flange fastening bolts are large in diameter and large in quantity, time and labor are wasted in assembly and disassembly, the efficiency is low, after the upper end socket and the connecting flange fastening bolts are assembled and disassembled for a plurality of times, the fastening bolts are bitten or inverted, after the upper end socket and the connecting flange fastening bolts are assembled and disassembled for a plurality of times, the sealing gasket fails, and the leakage risk exists. Moreover, the filter basket becomes clogged, which increases its weight and makes it difficult to remove the filter basket, especially near the center. Ethylene Glycol (EG) leaks into water during each disassembly, so that the consumption of raw materials is increased, and a large amount of wastewater is generated. The filter basket is deformed and damaged during cleaning at each time, the repair workload and the repair loss of the filter basket are increased, the disassembly and assembly time is long, generally exceeds 2 hours, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a polyester production is with exempting from to tear open abluent many baskets filter, many baskets filter has realized exempting from to tear open the washing, has reduced work load, has reduced the improper fastener, gasket, the flange damage that cause of dismouting, has reduced the production of waste water in the cleaning process, has improved the cleaning efficiency, has shortened the scavenging period, has reduced the loss to the filtration basket.

In order to solve the technical problem, the utility model discloses a following technical scheme: a multi-basket filter free of disassembly and cleaning for polyester production comprises an installation cylinder and a plurality of filter baskets arranged in the installation cylinder, wherein a supporting partition plate is arranged at the lower part in the installation cylinder and divides the interior of the installation cylinder into a liquid inlet cavity and a liquid outlet cavity; a plurality of flushing nozzles arranged towards the filter basket are arranged in the liquid inlet cavity, the mounting cylinder is connected with a flushing pipe, and the flushing nozzles are connected with the flushing pipe; the mounting cylinder is provided with an EG inlet and an EG draining port communicated with the liquid inlet cavity, and the mounting cylinder is provided with an EG outlet, a compressed air inlet and a vent port communicated with the liquid outlet cavity.

When the multi-basket filter works, EG liquid enters the liquid inlet cavity through the EG inlet, enters the filtering basket from the liquid inlet of the filtering basket, enters the liquid outlet cavity after being filtered by the filtering basket, and is finally discharged from the EG outlet. When the multi-basket filter is blocked, starting a cleaning program to clean the filter, wherein the cleaning comprises the following steps: s1, closing an EG inlet, closing an EG outlet, and closing a vent port and an EG drain port at the moment; s2, opening a compressed air inlet, and pressurizing EG in the installation cylinder; s3, opening an EG draining port, reducing the driving force generated by volume expansion by using compressed air pressure, and reversely flushing the filter basket; s4, after EG is discharged, closing a compressed air inlet and an EG discharge port; s5, starting the EG flushing pump, and inputting EG flushing liquid into the flushing pipe by the EG flushing pump; s6, when EG overflows from the emptying port, closing an EG flushing pump; s7, repeating S1 to S6; s8, after cleaning is finished, turning on an EG flushing pump, filling liquid into the installation cylinder until EG overflows from an emptying port; the EG flush pump was turned off.

Adopt high-pressure air and EG to wash filtering basket, after high-pressure air lets in an installation section of thick bamboo, be EG reverse impact filtering basket earlier, wash filtering basket, then on high-pressure air impacted filtering basket, wash filtering basket, accomplish reverse washing. The EG flushing liquid impacts the filter basket for positive cleaning. Through many times forward washing and reverse washing, the cleaning effect is good. The EG liquid is directly used for cleaning instead of the traditional water flow cleaning, the generation of sewage is avoided, and the EG cleaning liquid can be recycled. The filter basket does not need to be taken out to wash after the installation cylinder is opened in the whole cleaning process, and the cleaning operation is convenient.

The multi-basket filter realizes disassembly-free cleaning, reduces the workload, reduces the damage to the fasteners, gaskets and flanges caused by improper disassembly and assembly, reduces the generation of waste water in the cleaning process, improves the cleaning efficiency, shortens the cleaning time and reduces the loss of the filter basket.

Preferably, the flushing nozzle is a spiral nozzle. The jet angle of the spiral nozzle is 60 degrees. The spiral nozzle has wide spraying range, large impact force and good washing effect on the filter basket.

Preferably, the lower part of the installation cylinder is provided with a three-way joint, one end of the three-way joint is connected with the installation cylinder, and the other two ends of the three-way joint are respectively used as an EG inlet and an EG discharge port. The tee joint facilitates the arrangement of an EG inlet and an EG draining port.

As preferred, be equipped with a plurality of through-flow holes with filtering basket one-to-one on the supporting plate, the inlet corresponds the intercommunication with through-flow hole, and the last through-flow hole edge of supporting plate is equipped with fixed ear, forms the draw-in groove between fixed ear and the supporting plate, filters the basket lower extreme and connects the holding ring, and the holding ring edge card is in the draw-in groove. When the filter basket is installed, the positioning ring is clamped in the clamping groove, so that the connection is reliable, and the disassembly and the assembly are convenient.

Preferably, the edge of the positioning ring is provided with an avoiding notch for avoiding the fixing lug, and the positioning ring is connected with a positioning pin. The back is aimed at fixed ear and is inserted downwards to dodge the breach on the holding ring, will filter the basket and rotate certain angle, makes the locating pin support at fixed ear side, accomplishes the installation of being connected of filtering basket and supporting diaphragm.

Preferably, the upper end of the filter basket is connected with a lifting handle. The handle is arranged to facilitate the disassembly and assembly of the filtering basket.

Preferably, a plurality of flushing pipes are arranged, each flushing pipe is connected with an extension pipe, the extension pipes extend to the outside of the installation cylinder, a plurality of support rods are installed at the bottom of the installation cylinder, and the flushing pipes are tightly connected to the support rods.

The flushing pressure is ensured by arranging a plurality of flushing pipes, so that the flushing effect on the filtering basket is ensured.

Preferably, the mounting cylinder comprises a cylinder body, a bottom seal head and a top seal head, the bottom seal head is welded at the bottom of the cylinder body, an upper flange is arranged at the lower end of the top seal head, a lower flange is arranged at the upper end of the cylinder body, and the upper flange is tightly connected with the lower flange. The installation cylinder is convenient and reliable to connect and assemble, and the reliability is good after connection.

Compared with the prior art, the beneficial effects of the utility model are that: (1) The multi-basket filter realizes disassembly-free cleaning, reduces the workload, reduces the damage of fasteners, gaskets and flanges caused by improper disassembly and assembly, reduces the generation of waste water in the cleaning process, improves the cleaning efficiency, shortens the cleaning time and reduces the loss of the filter basket; (2) The multi-basket filter is cleaned in the forward direction and the reverse direction for multiple times, and the cleaning effect is good.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a top view of the present invention with the head cover removed;

fig. 3 is an enlarged view of the position D in fig. 1 according to the present invention;

fig. 4 is a schematic structural view of the positioning ring of the present invention;

in the figure: 1. the device comprises a mounting barrel, 2, a filter basket, 3, support legs, 4, a supporting partition plate, 5, a liquid inlet cavity, 6, a liquid outlet cavity, 7, a liquid inlet, 8, a flushing nozzle, 9, a flushing pipe, 10, an EG inlet, 11, an EG drainage port, 12, an EG outlet, 13, a compressed air inlet, 14, a vent, 15, a tee joint, 16, a short pipe, 17, a pipe hoop, 18, an extension pipe, 19, a support rod, 20, a through flow hole, 21, a fixing lug, 22, a clamping groove, 23, a positioning ring, 24, an avoiding notch, 25, a positioning pin, 26, a lifting handle, 27, a barrel body, 28, a bottom head, 29, a top head, 30, an upper flange, 31 and a lower flange.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example (b): the utility model provides a polyester production is with exempting from to tear abluent many baskets filter (refer to figure 1 to figure 4) open, includes installation section of thick bamboo 1, installs a plurality of filter baskets 2 in the installation section of thick bamboo, and the installation section of thick bamboo is cylindric structure, and a plurality of stabilizer blades 3 of installation section of thick bamboo sub-unit connection, the stabilizer blade supports the installation section of thick bamboo. A supporting partition plate 4 is arranged at the lower part in the installation cylinder, the supporting partition plate divides the interior of the installation cylinder into a liquid inlet cavity 5 and a liquid outlet cavity 6, a filtering basket is arranged on the supporting partition plate, the lower end of the filtering basket is provided with a liquid inlet 7, and the liquid inlet is communicated with the liquid inlet cavity; a plurality of flushing nozzles 8 arranged towards the filter baskets are arranged in the liquid inlet cavity, each filter basket is correspondingly provided with one flushing nozzle, the installation cylinder is connected with a flushing pipe 9, and the flushing nozzles are all connected with the flushing pipe; the mounting cylinder is provided with an EG inlet 10 and an EG drain port 11 which are communicated with the liquid inlet cavity, and the mounting cylinder is provided with an EG outlet 12, a compressed air inlet 13 and a vent port 14 which are communicated with the liquid outlet cavity. The EG inlet, the EG draining port, the EG outlet, the compressed air inlet and the emptying port are all connected with valves. The lower part of the installation barrel is provided with a three-way joint 15, one end of the three-way joint is connected with the installation barrel, and the other two ends of the three-way joint are respectively used as an EG inlet and an EG draining port. The tee joint is an equal-diameter tee. The EG inlet and the EG draining port are led out through the three-way joint, so that the liquid inlet pipe does not occupy the inner space of the filter any more, the filter volume with the same filtering area is smaller, the investment is lower, and the installation height can be reduced.

The flushing nozzle is a spiral nozzle. The jet angle of the spiral nozzle is 60 degrees. The spiral nozzle is located and filters basket inlet cross-section center department, guarantees that every filter basket corresponds a spiral nozzle, and spiral nozzle top and filter basket import cross-section parallel and level implement all-round no dead angle to filtering the basket and just wash.

A short connecting pipe 16 is arranged between the flushing nozzle and the flushing pipe, and a pipe hoop 17 is arranged between the short pipe and the flushing nozzle. The washing pipes are distributed in a plurality of numbers, each washing pipe is connected with an extension pipe 18, the extension pipes extend to the outside of the installation cylinder, a plurality of support rods 19 are installed at the bottom of the installation cylinder, and the washing pipes are tightly connected to the support rods. Two circles of filter baskets are distributed in the mounting cylinder, a plurality of filter baskets are uniformly distributed in each circle, three flushing pipes are arranged, two arc flushing pipes are arranged, one annular flushing pipe is arranged between the two arc flushing pipes.

The last and filtering basket one-to-one of division board is equipped with a plurality of through-flow holes 20, and the inlet corresponds the intercommunication with the through-flow hole, and the through-flow hole edge is equipped with fixed ear 21 on the division board, and fixed ear is the structure of falling L shape, forms draw-in groove 22 between fixed ear and the division board, filters basket lower end and connects holding ring 23, and the holding ring edge card is in the draw-in groove. The edge of the positioning ring is provided with an avoiding gap 24 for avoiding the fixing lug, and the positioning ring is connected with a positioning pin 25. The back is aimed at fixed ear and is inserted downwards to dodge the breach on the holding ring, will filter the basket and rotate certain angle, makes the locating pin support at fixed ear side, accomplishes the installation of being connected of filtering basket and supporting diaphragm. The filtering basket is vertically installed, the upper end of the filtering basket is connected with a lifting handle 26, and a plurality of filtering holes are densely distributed on the side wall of the filtering basket.

The mounting cylinder comprises a cylinder body 27, a bottom seal head 28 and a top seal head 29, wherein the bottom seal head is welded at the bottom of the cylinder body, an upper flange 30 is arranged at the lower end of the top seal head, a lower flange 31 is arranged at the upper end of the cylinder body, and the upper flange is tightly connected with the lower flange. Three way connection connects on the end seal, and compressed air inlet, drain set up on the top seal, and the EG export sets up on the barrel.

When the multi-basket filter works, EG liquid enters the liquid inlet cavity through the EG inlet, enters the filtering basket from the liquid inlet of the filtering basket, enters the liquid outlet cavity after being filtered by the filtering basket, and is finally discharged from the EG outlet. When the multi-basket filter is blocked, starting a cleaning program to clean the filter, wherein the cleaning comprises the following steps: s1, closing an EG inlet, closing an EG outlet, and closing an emptying port and an EG draining port at the moment; s2, opening a compressed air inlet, and pressurizing EG in the installation cylinder; s3, opening an EG draining port, reducing the driving force generated by volume expansion by using compressed air pressure, and reversely flushing the filter basket; s4, after EG is completely discharged, closing a compressed air inlet and an EG discharging port; s5, starting the EG flushing pump, and inputting EG flushing liquid into the flushing pipe by the EG flushing pump; s6, when EG overflows from the emptying port, closing an EG flushing pump; s7, repeating S1 to S6; s8, after cleaning is finished, turning on an EG flushing pump, filling liquid into the installation cylinder until EG overflows from an emptying port; the EG flush pump was turned off.

The above-described embodiments are merely preferred and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A multi-basket filter free of disassembly and cleaning for polyester production is characterized by comprising an installation cylinder and a plurality of filter baskets arranged in the installation cylinder, wherein a supporting partition plate is arranged at the lower part in the installation cylinder and divides the interior of the installation cylinder into a liquid inlet cavity and a liquid outlet cavity; a plurality of flushing nozzles arranged towards the filter basket are arranged in the liquid inlet cavity, the mounting cylinder is connected with a flushing pipe, and the flushing nozzles are connected with the flushing pipe; the mounting cylinder is provided with an EG inlet and an EG draining port communicated with the liquid inlet cavity, and the mounting cylinder is provided with an EG outlet, a compressed air inlet and a vent port communicated with the liquid outlet cavity.

2. The disassembly-free multi-basket filter for polyester production as claimed in claim 1, wherein the washing nozzle is a spiral nozzle.

3. The disassembly-free multi-basket filter for polyester production as claimed in claim 2, wherein the spiral nozzle has a jet angle of 60 °.

4. The multi-basket filter for polyester production free of disassembly and cleaning as claimed in claim 1, wherein a tee joint is installed at the lower part of the installation cylinder, one end of the tee joint is connected with the installation cylinder, and the other two ends are respectively used as an EG inlet and an EG discharging port.

5. The multi-basket filter free of disassembly for cleaning in polyester production as claimed in claim 1, wherein the support partition plate and the filter basket are provided with a plurality of through holes in one-to-one correspondence, the liquid inlet is communicated with the through holes correspondingly, the edges of the through holes on the support partition plate are provided with fixing lugs, a clamping groove is formed between the fixing lugs and the support partition plate, the lower end of the filter basket is connected with a positioning ring, and the edges of the positioning ring are clamped in the clamping groove.

6. The multi-basket filter for cleaning in polyester production as claimed in claim 5, wherein the positioning ring has an avoiding notch at its edge for avoiding the fixing lug, and the positioning ring is connected with the positioning pin.

7. The disassembly-free multi-basket filter for polyester production as claimed in claim 1, wherein the upper end of the filter basket is connected with a handle.

8. The multi-basket filter for polyester production, which is free from disassembly and cleaning and is used as claimed in any one of claims 1 to 7, wherein a plurality of flushing pipes are arranged, each flushing pipe is connected with an extension pipe, the extension pipes extend to the outside of the installation cylinder, a plurality of support rods are arranged at the bottom of the installation cylinder, and the flushing pipes are tightly connected with the support rods.

9. The disassembly-free multi-basket filter for polyester production as claimed in any one of claims 1 to 7, wherein the mounting cylinder comprises a cylinder body, a bottom head and a top head, the bottom head is welded to the bottom of the cylinder body, the top head is provided with an upper flange at the lower end, the cylinder body is provided with a lower flange at the upper end, and the upper flange and the lower flange are tightly connected.