CN219209197U

CN219209197U - Acid bath filter equipment before spinning

Info

Publication number: CN219209197U
Application number: CN202223298305.4U
Authority: CN
Inventors: 熊毅; 黄继荣; 吕志华; 吴学刚; 潘国宁
Original assignee: Yibin Grace Group Co Ltd; Yibin Haisite Fiber Co Ltd
Current assignee: Yibin Grace Group Co Ltd; Yibin Haisite Fiber Co Ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-06-20
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a pre-spinning acid bath filtering device, which belongs to the technical field of spinning and comprises a barrel and a filter element, wherein an acid bath inlet and a backflushing liquid outlet are respectively arranged at the left side and the right side of the lower end of the filter element, a backflushing liquid inlet and an acid liquid outlet are respectively arranged at the left side and the right side of the upper end of the filter element, a compressed air inlet and a compressed air outlet are arranged at the top end of the filter element, the compressed air inlet is connected with a compressed air pipe, and a plurality of filtering holes and filtering bags are arranged at the lower end of the filter element. When the device is used, only the acid bath inlet and the acid liquor outlet are opened, the acid bath enters the filter cartridge through the acid bath inlet, and the acid bath enters the filter core through the filter bag and the filter holes and is discharged from the acid liquor outlet; when the impurities on the filter bag are excessive, only the acid bath inlet and the acid liquor outlet are closed, the backflushing liquid enters the filter element and the filter cartridge through the backflushing liquid inlet, compressed air enters the compressed air pipe through the compressed air inlet and stirs the backflushing liquid through the air outlet, the impurities on the filter bag fall into the backflushing liquid and are discharged through the backflushing liquid outlet, and backflushing of the filter device is completed.

Description

Acid bath filter equipment before spinning

Technical Field

The utility model relates to the technical field of spinning, in particular to a pre-spinning acid bath filtering device.

Background

In the viscose fiber production process, some colloid sulfur impurities are generated due to the chemical reaction between the acid bath and viscose, and part of impurities are brought into the circulation process to cause the acid bath to become turbid, so that the blockage of a spinneret and the influence of impurities on the quality of a spinning finished product in the spinning process are avoided, and the acid bath is required to be filtered to remove impurities before being conveyed to spinning.

At present, an acid bath filter for acid stations is widely used for removing impurities, the filter is of a cylindrical structure, a large number of polypropylene tows are arranged in a cylinder, the acid bath enters from the bottom of the cylinder and is discharged from the upper part of the cylinder through the tows, impurities in the acid bath can be adsorbed on the tows in the process of passing the tows, and although 98% of the impurities in the acid bath can be intercepted by the filter, some impurities such as sulfide with smaller particles cannot play a good filtering role. Therefore, the acid bath is filtered by a filter device before entering the spinning machine, and fine particulate impurities which cannot be adsorbed and intercepted by the polypropylene fiber bundle filter are removed, so that the clarity of the acid bath is higher.

The Chinese patent publication No. CN201379999, publication No. 2010.01.13 discloses a filter device, which consists of a filter cylinder, a filter element, a filter screen or filter cloth, a connecting base and a pressure sensing system, wherein the filter element is of an integral structure with two diversion trenches, the surfaces of which are spiral and longitudinally staggered with each other. The device of this patent application is used for the filtration of viscose stock solution in viscose fiber production process, and this patent has following problems: (1) poor filtering capability; (2) flushing cannot be performed without dismantling the filter device; (3) the filtering effect is poor; (4) the sealability is poor.

Disclosure of Invention

The utility model aims to solve the problems that the acid bath filtering before spinning is not thorough and the washing can not be carried out under the condition of not disassembling the filtering device, and provides the acid bath filtering device before spinning, which is used for closing other inlets and outlets, opening an acid bath inlet and an acid liquor outlet, enabling the acid bath to enter a filter cylinder through the acid bath inlet, enabling the acid bath to enter a filter core channel through a filter bag and a filter hole and be discharged from the acid liquor outlet; when the impurities on the filter bag are excessive and the filtering flux is poor, the acid bath inlet and the acid liquor outlet are closed, the backflushing liquid inlet and the backflushing liquid outlet are opened (the opening of the inlet valve is slightly larger than that of the outlet, the filter core and the filter cylinder are kept full of backflushing liquid, backflushing is acid liquor), the backflushing liquid enters the filter core and the filter cylinder through the backflushing liquid inlet, compressed air enters the compressed air pipe through the compressed air inlet, the backflushing liquid is stirred through the air outlet, so that the impurities attached to the filter bag fall into the backflushing liquid, and finally, the backflushing regeneration of the filtering device is completed through the backflushing liquid outlet. The utility model has good filtering effect, and can finish back flushing without disassembling the filtering device.

The utility model aims at realizing the following technical scheme:

the utility model provides a spin front acid bath filter equipment, includes barrel and filter core, filter core lower extreme left and right sides is provided with acid bath import and recoil liquid export respectively, filter core upper end left and right sides is provided with recoil liquid import and acidizing fluid export respectively, the filter core top is provided with compressed air import and compressed air export, compressed air import links to each other with compressed air pipe, compressed air pipe inserts the filter core lower extreme, the filter core lower extreme is provided with a plurality of filtration pores, the cover is equipped with the filter bag on the filter core.

Preferably, the filter bag is bound to the filter element by a tie or a rope.

Preferably, a clamping groove is formed at the binding position of the filter element and the filter bag.

Preferably, the filter cylinder is provided with a sight glass.

Preferably, the filter element is of a squirrel cage structure.

Preferably, a plurality of air outlet holes are formed in the compressed air pipe.

Preferably, the filter holes are uniformly arranged around the filter element.

The beneficial effects of this technical scheme are as follows:

1. the utility model provides a pre-spinning acid bath filtering device, which is arranged between an acid bath high-level tank and a spinning machine, wherein acid bath enters a filter cylinder through an acid bath inlet, permeates into an inner cavity of the filter core through a filter bag and a filter hole on the filter core, is discharged into the spinning machine through an acid bath outlet, intercepts and adheres impurities on the filter bag after running for a period of time, the flux of the filter can be gradually attenuated, when the filter cannot meet production requirements, the filter is required to be stopped for cleaning, a backflush liquid inlet, a backflush liquid outlet and a compressed air outlet are opened after an acid bath inlet and an acid bath outlet valve are closed, the compressed air inlet is slowly opened, after compressed air enters the filter, backflush liquid in the filter can be stirred, impurities adhered to the filter bag are stirred and fall into backflush liquid in the filter, and the backflush liquid containing the impurities is discharged through a backflush liquid outlet, so that the filter regeneration can be completed. The utility model has good filtering effect, and can finish back flushing without disassembling the filtering device.

2. The filter bag is bound on the filter element by the binding belt or the rope, and the binding position of the filter element and the filter bag is provided with the protruding clamping groove to prevent the filter bag from being bound improperly.

3. The sight glass is arranged at the binding position of the filter bag and the filter element, so that the condition of the filter bag can be conveniently observed, and the filter bag can be timely found to fall off.

4. The pre-spinning acid bath filtering device provided by the utility model has the advantages that the gap on the squirrel-cage structure filter element is larger, and the rapid blockage of the holes by impurities caused by the too small pore diameter on the filter element can be avoided.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a top view of the present utility model;

wherein: 1. a filter cartridge; 2. a filter element; 3. an acid bath inlet; 4. a backwash liquid outlet; 5. a backflushing fluid inlet; 6. an acid liquor outlet; 7. a compressed air inlet; 8. a compressed air outlet; 9. a compressed air tube; 10. a filter hole; 11. a filter bag; 12. a clamping groove; 13. a viewing mirror.

Detailed Description

The present utility model will be described in further detail with reference to examples, but embodiments of the present utility model are not limited thereto.

It is noted that when an element is referred to as being "mounted," "secured," or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should be noted that, in the embodiments of the present utility model, terms such as left, right, up, and down are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

Example 1

As shown in fig. 1, the acid bath filtering device before spinning comprises a barrel body and a filter element 2, wherein the lower end of the filter element 2 is inserted into a filter cartridge 1, flanges are arranged on the outer sides of the filter element 2 and the filter cartridge 1, the filter element 2 and the filter element are connected through the flanges and bolts, an acid bath inlet 3 and a backflushing liquid outlet 4 are respectively arranged on the left side and the right side of the lower end of the filter element 1, a backflushing liquid inlet 5 and an acid liquid outlet 6 are respectively arranged on the left side and the right side of the upper end of the filter element 2, a compressed air inlet 7 and a compressed air outlet 8 are respectively arranged on the top end of the filter element 2, the compressed air inlet 7 is connected with a compressed air pipe 9, the compressed air pipe 9 is inserted into the lower end of the filter element 2, a plurality of filtering holes 10 are formed in the lower end of the filter element 2, and a filter bag 11 is sleeved on the filter element 2. The compressed air outlet 8 is connected with the main air duct and used for exhausting, the compressed air inlet 7 is connected with the compressed air main pipe, the backflushing liquid inlet 5 and the acid bath inlet 3 are both connected with an acid inlet pipeline of the machine acid bath main pipe, the acid bath outlet is connected with an acid bath tank or an acid inlet barrel of the spinning machine, and the backflushing liquid outlet 4 is connected with an acid return main pipe of the spinning machine.

The device is arranged between an acid bath elevated tank and a spinning machine, acid bath enters a filter cylinder 1 through an acid bath inlet 3, permeates into an inner cavity of the filter core 2 through a filter bag 11 and a filter hole 10 on the filter core 2, is discharged into the spinning machine through an acid bath outlet, and after the device runs for a period of time, the impurities which are intercepted and attached on the filter bag 11 are more and more, the flux of the filter can be gradually attenuated, when the device can not meet the production requirement, the device is required to be stopped for cleaning, a backflush liquid inlet 5, a backflush liquid outlet 4 and a compressed air outlet 8 are opened after the acid bath inlet 3 and the acid bath outlet valve are closed, a compressed air inlet 7 is slowly opened, after compressed air enters the filter, backflush liquid in the filter (backflush liquid is acid bath, no extra consumption is generated), the impurities attached on the filter bag 11 are stirred and fall into backflush liquid in the filter, and the backflush liquid containing the impurities is discharged through a backflush liquid outlet, and the filter can be regenerated. The utility model has good filtering effect, and can finish back flushing without disassembling the filtering device.

Example 2

As shown in fig. 2 and 3, this embodiment is different from embodiment 1 in that: the outer diameter of the filter cylinder 1 is DN300mm, the outer diameters of the acid bath inlet 3 and the backflushing liquid outlet 4 are DN80mm, the outer diameter of the top end of the filter element 2 is DN150mm, the outer diameters of the backflushing liquid inlet 5 and the acid liquid outlet 6 are DN80mm, the filter bag 11 is a 200-300 mesh filter screen, and the filter bag 11 is bound on the filter element 2 through a binding belt or a rope.

Wherein, the binding position of the filter element 2 and the filter bag 11 is provided with a clamping groove 12. The filter bag 11 is bound on the filter element 2 by a binding belt or a rope, and a protruding clamping groove 12 is arranged at the binding position of the filter element 2 and the filter bag 11 to prevent the filter bag 11 from being bound improperly and falling.

Wherein, the filter cartridge 1 is provided with a sight glass 13. The sight glass 13 is arranged at the binding position of the filter bag 11 and the filter element 2, so that the condition of the filter bag 11 can be conveniently observed, and the filter bag 11 can be timely found to fall down.

Wherein the filter element 2 is of a squirrel cage structure. The gap on the squirrel cage structure filter core 2 is bigger, can avoid the aperture on the filter core 2 too little and cause the hole to be blocked fast by impurity.

Wherein, a plurality of air outlet holes are arranged on the compressed air pipe 9.

Wherein the filter holes 10 are uniformly arranged around the filter element 2.

According to the utility model, when the filter bag 11 is cleaned, the impurities on the filter bag 11 can be removed by blowing the compressed air outwards, so that the cleaning effect is achieved, and the backwashing can be completed without disassembling the filter element 2 and the filter bag 11, so that the time and the workload are saved; the filter bag 11 is reversely blown by compressed air, so that impurities attached to the filter bag 11 can be quickly removed, and the whole backwashing process can be completed within 3-5 minutes; the gap on the squirrel cage structure filter core 2 is bigger, can avoid the aperture on the filter core 2 too little and cause the hole to be blocked fast by impurity.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model fall within the scope of the present utility model.

Claims

1. The utility model provides a before spinning acid bath filter equipment, includes filter cartridge (1) and filter core (2), its characterized in that: the novel filter is characterized in that an acid bath inlet (3) and a backflushing liquid outlet (4) are respectively arranged on the left side and the right side of the lower end of the filter cartridge (1), a backflushing liquid inlet (5) and an acid liquid outlet (6) are respectively arranged on the left side and the right side of the upper end of the filter cartridge (2), a compressed air inlet (7) and a compressed air outlet (8) are arranged on the top end of the filter cartridge (2), the compressed air inlet (7) is connected with a compressed air pipe (9), the compressed air pipe (9) is inserted into the lower end of the filter cartridge (2), a plurality of filter holes (10) are formed in the lower end of the filter cartridge (2), and a filter bag (11) is sleeved on the filter cartridge (2).

2. A pre-spin acid bath filtration device according to claim 1, wherein: the filter bag (11) is bound on the filter element (2) through a binding belt or a rope.

3. A pre-spin acid bath filtration device according to claim 2, wherein: the binding part of the filter element (2) and the filter bag (11) is provided with a clamping groove (12).

4. A pre-spin acid bath filtration device according to claim 3, wherein: a viewing mirror (13) is arranged on the filter cylinder (1).

5. A pre-spin acid bath filtration device according to claim 1 or 4, wherein: the filter element (2) is of a squirrel cage structure.

6. A pre-spin acid bath filtration device according to claim 5, wherein: a plurality of air outlet holes are formed in the compressed air pipe (9).

7. A pre-spin acid bath filtration device according to claim 6, wherein: the filter holes (10) are uniformly formed around the filter element (2).