CN210814153U - PTA waste water bag filter - Google Patents

Abstract

The utility model discloses a PTA wastewater bag filter, which comprises a tank body, wherein a horizontally arranged tube plate is arranged in the tank body to divide the space of the tank body into an upper part and a lower part; the tube plate is provided with a plurality of through holes, each through hole is internally provided with a filter basket in a penetrating way, and the upper edge of each filter basket is fixed on the top surface of the tube plate through a fixing structure; the outer side of each filter basket is sleeved with a filter bag; a water inlet is arranged on the side wall of the lower part of the tank body, a water outlet is arranged on the side wall of the upper part of the tank body, a drain outlet is arranged at the bottom of the tank body, and the drain outlet, the water inlet and the water outlet are all provided with pneumatic control valves; and a differential pressure transmitter for monitoring the pressure difference between the upper part and the lower part of the tank body is arranged on the outer side of the tank body.

Description

PTA waste water bag filter

Technical Field

The utility model discloses mainly set up the filtration equipment field, especially a PTA waste water pocket filter.

Background

In the production process flow of PTA, the wastewater generated by the refining unit passes through a subsequent wastewater treatment device, and water, organic acid and catalyst are recycled. However, TA powder and foreign particles in the wastewater easily cause pollution and blockage to the wastewater treatment device, increase pressure drop and influence the operation effect of the device.

The common bag filter has the advantages that impurities are blocked in the filter bag, the filter bag is cleaned or replaced when the pressure drop reaches a certain degree, the filtering efficiency is low, and the labor intensity of workers is high.

Therefore, the utility model is especially provided,

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a clear up simple, PTA waste water bag filter that the filter effect is good.

In order to achieve the purpose, the utility model provides a PTA wastewater bag filter, which comprises a tank body, wherein a horizontally arranged tube plate is arranged in the tank body to divide the space of the tank body into an upper part and a lower part;

the tube plate is provided with a plurality of through holes, each through hole is internally provided with a filter basket in a penetrating way, and the upper edge of each filter basket is fixed on the top surface of the tube plate through a fixing structure;

the outer side of each filter basket is sleeved with a filter bag;

a water inlet is arranged on the side wall of the lower part of the tank body, a water outlet is arranged on the side wall of the upper part of the tank body, a drain outlet is arranged at the bottom of the tank body, and the drain outlet, the water inlet and the water outlet are all provided with pneumatic control valves;

and a differential pressure transmitter for monitoring the pressure difference between the upper part and the lower part of the tank body is arranged on the outer side of the tank body.

Preferably, the top of the can body is configured with an upwardly opening top lid.

Preferably, the fixing structure comprises a gasket and an annular gland, and the gasket is fixed on the top surface of the tube plate and arranged around the through hole;

the annular gland is arranged above the gasket and used for tightly pressing the bag opening of the filter bag and the upper edge of the filter basket in a space between the annular gland and the gasket, and the annular gland is fixed with the tube plate through a locking bolt penetrating through the annular gland.

Preferably, the filter bag opening is made of a seam ring plate.

Preferably, the filter bag is made of polypropylene filter cloth.

The utility model provides a PTA waste water bag filter has following beneficial effect:

the back washing can be carried out when the filter bag is blocked, the filtering efficiency is high, and the reliability is good. When a plurality of filters are used in combination, continuous operation of the filter can be realized.

Drawings

Figure 1 is the utility model provides a PTA waste water pocket filter structure schematic diagram.

In the figure:

1. tank 2, tube plate 3, top cover 4, water outlet 5, water inlet 6, sewage outlet 7, filter basket 8, filter bag 9, differential pressure transmitter

Detailed Description

Referring to fig. 1, the utility model provides a PTA waste water bag filter.

The PTA wastewater bag filter comprises a tank body 1, wherein a horizontally arranged tube plate 2 is arranged in the tank body 1, and the tank body 1 is divided into an upper part and a lower part.

In order to facilitate the maintenance and cleaning of various structures in the tank, the top of the tank body 1 is provided with a top cover 3 which is opened upwards. The top cover 3 is opened when needed and closed and locked when not needed, so that the sealing performance of the tank body 1 is ensured.

And the tube plate 2 is provided with a plurality of through holes for accommodating and fixing the filter basket 7. In order to improve the filtering efficiency and reduce the difficulty of later maintenance, in this embodiment, the through holes are uniformly arranged, and the shape and the size of each through hole are the same.

Filter basket 7 runs through the setting of tube sheet 2, and the last border of filter basket 7 is fixed in the top surface of tube sheet 2 through fixed knot structure. The outer side of the filter basket 7 is sleeved with a filter bag 8 for filtering.

Further, in this embodiment, the fixing structure includes a gasket and an annular pressing sheet; the gasket is fixed on the top surface of tube sheet 2, and encircles the through-hole setting, and the gasket top is located to the annular preforming, and the size matches with the gasket for press the tight space of fixing in between annular gland and gasket with the sack of filter bag 8 and the upper limb of straining basket 7, prevent to loosen at filterable in-process filter bag 8 and take off. The annular gland is fixed with the tube plate 2 through a locking bolt penetrating through the annular gland.

Furthermore, 8 sack of filter bag adopts the seam crown plate, the size of seam crown plate also matches with gasket and annular preforming, and the lock bolt also runs through the seam crown plate simultaneously, further prevents that filter bag 8 from taking off in filtering process pine.

The filter bag 8 is made of polypropylene filter cloth, so that filter residues can be separated easily in the back washing process of the filter bag.

The side wall of the lower part of the tank body is provided with a water inlet 5, the side wall of the upper part of the tank body is provided with a water outlet 4, the bottom of the tank body is provided with a sewage draining exit 6, and the sewage draining exit 6, the water inlet 5 and the water outlet 4 are all provided with pneumatic control valves.

And a differential pressure transmitter 9 for monitoring the pressure difference between the upper part and the lower part of the tank body is arranged on the outer side of the tank body.

The utility model provides a PTA waste water bag filter opens the valve of water inlet and delivery port earlier when using, makes waste water get into from the water inlet, after the filter bag filters, from the delivery port discharge on upper portion, impurity is stayed in the filter bag outside.

And monitoring the differential pressure transmitter, and when the pressure difference between the upper part and the lower part of the tank body reaches a certain value, indicating that impurities accumulated on the outer side of the filter bag begin to influence the filtering effect of the filter bag.

At the moment, the metal port valve is closed, the drain outlet valve is opened, the backwashing water enters the pipe body from the water outlet, the filter residue on the outer surface of the filter bag is washed outwards from the inside of the filter bag, and the filter residue is discharged through the drain outlet.

Many parallelly connected uses of PTA waste water bag filter, and a PTA waste water bag filter carries out the back flush, and many other filters carry out the filtration, and the back flush water utilizes the play water of other filters to go on.

Furthermore, the differential pressure transmitter can be in communication connection with the single chip microcomputer, and the single chip microcomputer is used for controlling pneumatic control valves of the drain outlet, the water inlet and the water outlet so as to automatically perform filtering and backwashing operations.

The utility model provides a PTA waste water pocket type filter can carry out the back flush when the filter bag is dirty stifled, and filtration efficiency is high, the good reliability. When a plurality of filters are used in combination, continuous operation of the filter can be realized.

The present invention has been described in detail with reference to specific embodiments, and the description of the embodiments is only for the purpose of helping understanding the core idea of the present invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. A PTA waste water bag filter is characterized in that the bag filter comprises a tank body, a horizontally arranged tube plate is arranged in the tank body, and the tank body is divided into an upper part and a lower part;

the tube plate is provided with a plurality of through holes, each through hole is internally provided with a filter basket in a penetrating way, and the upper edge of each filter basket is fixed on the top surface of the tube plate through a fixing structure;

the outer side of each filter basket is sleeved with a filter bag;

a water inlet is arranged on the side wall of the lower part of the tank body, a water outlet is arranged on the side wall of the upper part of the tank body, a drain outlet is arranged at the bottom of the tank body, and the drain outlet, the water inlet and the water outlet are all provided with pneumatic control valves;

and a differential pressure transmitter for monitoring the pressure difference between the upper part and the lower part of the tank body is arranged on the outer side of the tank body.

2. The PTA wastewater bag filter of claim 1, wherein the tank top is configured with an upwardly open top cap.

3. The PTA wastewater bag filter of claim 1 wherein the retaining structure comprises a gasket secured to the top surface of the tube sheet and disposed around the through hole and an annular gland;

the annular gland is arranged above the gasket and used for tightly pressing the bag opening of the filter bag and the upper edge of the filter basket in a space between the annular gland and the gasket, and the annular gland is fixed with the tube plate through a locking bolt penetrating through the annular gland.

4. The PTA wastewater bag filter of claim 3 wherein the filter bag mouth is a seam loop sheet.

5. The PTA wastewater bag filter of claim 1, wherein the filter bag is made of polypropylene filter cloth.

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