CN216677204U

CN216677204U - Double-layer bag filter

Info

Publication number: CN216677204U
Application number: CN202123311563.7U
Authority: CN
Inventors: 闫武军; 王勤; 翟忠宝; 唐晓忠
Original assignee: JIANGSU FEYMER TECHNOLOGY CO LTD
Current assignee: JIANGSU FEYMER TECHNOLOGY CO LTD
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-07
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a double-layer bag filter. In the engineering operation, liquid is input into a filtering container from a liquid inlet, and after the liquid is filtered for the first time from a first-stage filtering bag of a first-stage filtering cylinder, the liquid enters a second-stage filtering bag of a second-stage filtering cylinder for secondary filtering, and finally is discharged from a liquid outlet. Through increase one deck filter screen device again on current single-layer filter's basis, but increase filter area effective filtration efficiency, when single-layer filter dealt with proruption impurity and increase, carry out the short time and shut down and install second floor filter, and need not to add the tandem equipment, effectively reduced investment cost.

Description

Double-layer bag filter

Technical Field

The utility model relates to the field of filters, in particular to a double-layer bag filter.

Background

The liquid filter is an indispensable device on the pipeline for conveying media, and is usually arranged at the inlet end of the valve to eliminate impurities in the media so as to protect the valve and normal use of equipment. When fluid enters the filter cylinder with a filter screen of a certain specification, impurities are blocked, clean filtrate is discharged from the filter outlet, and when the filter cylinder needs to be cleaned, the detachable filter cylinder is taken out and is installed again after treatment, so that the filter cylinder is very convenient to use and maintain

The filters used in the market at present are all single-layer, and can only filter liquid once. The impurities in the liquid that needs to be filtered for some occasions increase suddenly. When a single filter can not meet the requirements, a method of connecting a plurality of filters in series is generally used on the market at present to reform the site, so that the equipment investment cost is increased, the occupied area is large, the manufacturing and replacing period is long, and the operation of replacing the filter bag is complicated during use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defects, the utility model provides a double-layer bag filter which can obviously improve the filtering efficiency and cope with the situation that the impurities in the filtered liquid are increased suddenly.

The present invention provides a double-layered bag filter comprising:

the filtering container comprises a cylinder body, a cover body detachably arranged on the upper part of the cylinder body, and a liquid inlet and a liquid outlet which are arranged on the cylinder body or the cover body;

the secondary filter layer comprises a secondary filter cylinder detachably fixed in the cylinder body, and a secondary filter bag sleeved in the secondary filter cylinder;

the one-level filter layer is fixed in including detachably the one-level cartridge filter of two-stage filter section of thick bamboo is established the one-level filter bag of one-level cartridge filter inside is established.

Preferably or optionally, the cylinder body is provided with a clamping groove in the middle of the liquid inlet and the liquid outlet, and the edge of the cylinder body is also provided with at least two positioning columns.

Preferably or optionally, the cover body comprises a pressing plate and a top plate connected with the pressing plate through an elastic piece; the surface of the cover body is also provided with a positioning hole matched with the positioning column.

Preferably or optionally, the edge of the cylinder opening of the primary filter cylinder is provided with a wing ring;

and a clamping part matched with the clamping groove is arranged outside the cylinder opening of the secondary filter cylinder.

Preferably or optionally, the diameter of the opening of the secondary filter cylinder is smaller than the diameter of the wing ring and larger than the outer diameter of the primary filter cylinder.

Preferably or optionally, a fixing ring is further arranged between the cover body and the filtering container, and the diameter of the fixing ring is larger than or equal to the inner diameter of the primary filtering cylinder.

Preferably or optionally, the lower end of the filter cylinder body is also provided with a discharge port.

Preferably or optionally, the filter container is provided with a first sealing ring at the contact part with the fixing ring.

Preferably or optionally, the clamping part is tightly attached to the wing ring through a second sealing ring.

Preferably or alternatively, the mesh number of the secondary filter bags is less than or equal to the mesh number of the primary filter bags.

Has the advantages that:

1. the utility model designs a double-layer bag filter, in the operation process, liquid is input into a filter container from a liquid inlet, the liquid enters a secondary filter cylinder for secondary filtering after being firstly filtered from a primary filter cylinder, and finally the liquid is discharged from a liquid outlet. Through increase one deck filter screen device again on original single-layer filter's basis, but increase filter area effective filtration efficiency, when single-layer filter dealt with proruption impurity and increase, carry out the short time and shut down and install second floor filter, and need not to add the tandem equipment, effectively reduced investment cost.

2. The clamping groove is formed between the liquid inlet and the liquid outlet, and the positioning column is arranged at the edge of the barrel body, so that the sealing performance of the device is improved.

3. According to the utility model, the elastic piece is fixedly arranged between the pressing plate and the top plate, so that liquid in the filter cartridge can be prevented from flowing back in the fixing process and operation of the cover body, and extra workload is avoided.

4. The clamping part is arranged on the secondary filter cylinder and used for fixing the secondary filter cylinder on the clamping groove of the filter container, so that the looseness is prevented, and the air tightness of the device is further improved.

5. The fixing ring is arranged between the cover body and the filtering container, and liquid input from the liquid inlet can enter the primary filtering cylinder through the fixing ring.

6. The lower end of the filter cylinder body is provided with the discharge port, so that the water can be discharged when the filter device is shut down, and the filter cylinder is convenient to install, replace, clean and the like.

7. According to the utility model, the first sealing ring is arranged between the filter cylinder body and the fixing ring, so that the leakage of liquid to be filtered is prevented, and the air tightness of the device is further improved.

8. The second sealing ring is arranged, so that unfiltered liquid can be prevented from entering the secondary filter cylinder, and the load of the secondary filter cylinder is increased.

9. The mesh number of the secondary filter bag is smaller than or equal to that of the primary filter bag, so that the filtering load of the secondary filter bag can be reduced when the mesh number is equal, the secondary filter bag is prevented from being excessively replaced, graded filtering can be realized when the mesh number is unequal, and the filtering effect is effectively improved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the cover in the present invention.

Fig. 3 is a partial structural schematic diagram of the present invention.

FIG. 4 is a schematic view of the structure of the first filter layer according to the present invention

The reference signs are: the device comprises a filtering container 1, a barrel 1-1, a clamping groove 1-1-2, a positioning column 1-1-3, a cover body 1-2, a pressing plate 1-2-1, an elastic piece 1-2-2, a top plate 1-2-3, a positioning hole 1-2-4, a liquid inlet 1-3, a liquid outlet 1-4 and a discharge port 1-5;

a first-stage filter layer 2, a first-stage filter cylinder 2-1, a wing ring 2-1-2 and a first-stage filter bag 2-2;

a secondary filter layer 3, a secondary filter cylinder 3-1, a clamping part 3-1-2 and a secondary filter bag 3-2;

a fixed ring 4;

a first seal ring 5;

a second seal ring 6.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

Referring to fig. 1 to 4, a double-layered bag filter, comprising: a filter container 1, a first-stage filter layer 2 and a second-stage filter layer 3.

Wherein, the filtering container 1 comprises a cylinder 1-1, a cover body 1-2 which is detachably arranged on the upper part of the cylinder 1-1, a liquid inlet 1-3 and a liquid outlet 1-4 which are arranged on the cylinder 1-1 or the cover body 1-2; the cylinder 1-1 is provided with a clamping groove 1-1-2 between the liquid inlet 1-3 and the liquid outlet 1-4, and the edge of the cylinder 1-1 is also provided with at least two positioning columns 1-1-3.

In a further embodiment, the discharge port 1-5 at the lower end of the filter cylinder 1-1 can perform a water discharge operation when the filter device is shut down, so that the filter cylinder can be conveniently installed, replaced, cleaned and the like. A circle of clamping grooves 1-1-2 are arranged at the inner edge of the cylinder opening of the filtering container 1 and can be matched with the clamping parts 3-1-2 of the secondary filtering cylinder 3-1. The edge of the filter cylinder 1-1 is also provided with 4 positioning columns 1-1-3.

The cover body 1-2 is composed of a pressing plate 1-2-1 and a top plate 1-2-3 connected with the pressing plate 1-2-1 through an elastic part 1-2-2, and the elastic part 1-2-2 is fixedly arranged between the pressing plate 1-2-1 and the top plate 1-2-3, so that the fixing ring 4 can be prevented from loosening in the fixing process and operation of the cover body 1-2. The surface of the cover body 1-2 is also provided with 4 positioning holes 1-2-4 matched with the positioning columns 1-1-3 of the filtering container 1.

The secondary filter layer 3 comprises a secondary filter cylinder 3-1 detachably fixed in the cylinder 1-1 and a secondary filter bag 3-2 sleeved in the secondary filter cylinder 3-1; specifically, a clamping part 3-1-2 matched with the clamping groove 1-1-2 is arranged outside the opening of the secondary filter cylinder 3-1, and the primary filter cylinder 2-1 is detachably fixed on the cylinder body 1-1 through the clamping part 3-1-2.

The primary filter layer 2 comprises a primary filter cylinder 2-1 detachably fixed on the secondary filter cylinder 3-1 and a primary filter bag 2-22-1 sleeved inside the primary filter cylinder 2-1. Specifically, a wing ring 2-1-2 is designed on the edge of the cylinder opening of the secondary filter cylinder 3-1, and the primary filter cylinder 2-1 is detachably fixed on the secondary filter cylinder 3-1 through the wing ring 2-1-2.

In a further embodiment, a fixing ring 4 is further disposed between the cover body 1-2 and the filtering container 1, and the diameter of the fixing ring 4 is smaller than or equal to the inner diameter of the filtering container 1, so that the liquid input from the liquid inlet 1-3 can enter the primary filtering cylinder 2-1 through the fixing ring 4.

In a further embodiment, the filter cylinder 1-1 is provided with a first sealing ring 5 at the contact with the fixing ring 4, which prevents the leakage of the liquid to be filtered. The second sealing ring 6 tightly attached to the clamping portion 3-1-2 and the clamping groove 1-1-2 can prevent unfiltered liquid from entering the secondary filter cylinder 3-1 and increase the load of the secondary filter cylinder 3-1. Meanwhile, the mesh number of the second-stage filter bag 3-2 is smaller than that of the first-stage filter bag 2-2, so that the filtering effect can be effectively improved.

The filter assembly steps in this embodiment are: the secondary filter bag 3-2 is sleeved in the secondary filter cylinder 3-1 to form a secondary filter layer 3, the clamping groove 1-1-2 of the filter container 1 is clamped by the clamping part 3-1-2 of the secondary filter layer 3, and the upper part of the secondary filter layer is covered with a second sealing ring 6. The primary filter bag 2-2 is sleeved in the primary filter cylinder 2-1 provided with the wing ring 2-1-2 to form a primary filter layer 2. The first-stage filter layer 2 is arranged in the second-stage filter layer 3, and is sequentially covered with the first seal ring 5 and the fixing ring 4 to be tightly attached. Then, the cover body 1-2 is covered on the fixing ring 4, and finally the positioning column 1-1-3 is matched with the positioning hole 1-2-4 to be sealed.

The working principle of the filter in the embodiment is as follows: in the operation process, liquid is input into the filtering container 1 from the liquid inlet 1-3, the liquid is firstly filtered from the first-stage filtering cylinder 2-1, enters the second-stage filtering cylinder 3-1 for secondary filtering, and is finally discharged from the liquid outlet 1-4. Through increase one deck filter screen device again on original single-layer filter's basis, but increase filter area effective filtration efficiency, when single-layer filter dealt with proruption impurity and increase, carry out the short time and shut down and install second floor filter, and need not to add the tandem equipment, effectively reduced investment cost.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. The utility model is not described in detail in order to avoid unnecessary repetition.

Claims

1. A dual layer bag filter, comprising:

2. The double-layer bag filter of claim 1, wherein the cylinder is provided with a clamping groove in the middle of the liquid inlet and the liquid outlet, and the edge of the cylinder is further provided with at least two positioning columns.

3. The double-layered bag filter according to claim 2, wherein the cover comprises a pressing plate, a top plate connected with the pressing plate by an elastic member; the surface of the cover body is also provided with a positioning hole matched with the positioning column.

4. The dual-layer bag filter of claim 3, wherein a retaining ring is further disposed between the cover and the filter vessel, and the diameter of the retaining ring is greater than or equal to the inner diameter of the primary filter cartridge.

5. The double-layered bag filter according to claim 4, wherein the filter container is provided with a first packing at a contact point with the fixing ring.

6. The double-layer bag filter as claimed in claim 2, wherein the edge of the mouth of the primary filter cartridge is provided with a wing ring;

7. The double-layered bag filter according to claim 6, wherein the fastening portion is tightly attached to the wing ring by a second sealing ring.

8. The double-layered bag filter according to claim 6, wherein the diameter of the mouth of the secondary filter cartridge is smaller than the diameter of the wing ring and larger than the outer diameter of the primary filter cartridge.

9. The double bag filter of claim 1 wherein the secondary filter bags have a mesh size less than or equal to the mesh size of the primary filter bags.

10. The double layer bag filter of claim 1 wherein the filter cartridge further comprises a drain port at the lower end.