Filter bag for duplex filter

Abstract

The utility model discloses a filter bag for a duplex filter, which belongs to the technical field of duplex filters and comprises a bag body, an annular plate is connected above the bag body, filter holes are arranged at the bottom of the bag body, an outer ring is connected to the outer side of the bag body, an inner ring is connected to the inner side of the bag body, and a filter screen is mounted on the bag body through the inner ring. According to the filter bag for the duplex filter, an inserting plate on a filter screen is inserted into an inserting groove, meanwhile, a limiting plate is embedded into a limiting groove, and along with insertion of the inserting plate, the groove wall of the inserting groove pushes a fixing block through a spherical curved surface on one side of the fixing block, so that the fixing block slides into a groove to compress a spring; the fixing blocks are pushed into the fixing grooves through springback of the springs, so that the fixing blocks are embedded into the fixing grooves, the filter screens are fixed and prevented from sliding and falling, impurities are filtered in a multi-stage mode through cooperation of the two filter screens and the filter holes in the bottom of the bag body, and the impurity filtering effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of double - union filters, and particularly relates to a filter bag for a double - union filter. Background Technique

[0002] The double - union filter, also known as the double - union switching filter, is composed of two stainless - steel filters in parallel. It has many advantages such as novel and reasonable structure, good sealing performance, strong flow - through capacity, and simple operation. It is a multi - purpose filtering device with a wide application range and strong adaptability. When the double - union filter works, it needs to be used in conjunction with a filter bag to filter and collect impurities. However, some filter bags on the market only perform single - stage filtration through the filter holes on the filter - bag body, and impurities are concentrated on a single - layer filter layer, which easily causes the filter holes to be blocked, thus affecting the filtration effect. Content of the Utility Model

[0003] In order to overcome the above - mentioned defects, the utility model provides a filter bag for a double - union filter, which solves the problem that some filter bags only perform single - stage filtration through the filter holes on the filter - bag body, and impurities are concentrated on a single - layer filter layer, easily causing the filter holes to be blocked and thus affecting the filtration effect.

[0004] To achieve the above object, the utility model provides the following technical solution: A filter bag for a double - union filter includes a bag body. An annular plate is connected above the bag body. Filter holes are opened at the bottom of the bag body. An outer ring is connected to the outside of the bag body. An inner ring is connected to the inside of the bag body. A filter screen is installed in the bag body through the inner ring. A sealing ring is connected below the annular plate. A first friction pad is connected below the annular plate;

[0005] A second friction pad is connected below the annular plate. A limiting groove is opened on the inner ring. Slots are opened on both sides of the inner ring. A limiting plate is connected below the filter screen. Insertion plates are connected to both sides of the filter screen. A groove is opened inside the insertion plate. A spring is connected in the groove. One end of the spring is connected with a fixing block.

[0006] As a further scheme of the utility model: The limiting plate is arc - shaped and is inserted into the limiting groove, and the insertion plate is inserted into the slot.

[0007] As a further scheme of the utility model: Fixing grooves are opened on the inner walls of both sides of the slot. The fixing block slides in the groove. The side of the fixing block away from the spring is spherical in design, and the fixing block is fitted with the fixing groove.

[0008] As a further scheme of the utility model: There are two or more filter screens distributed in the bag body in a vertically arranged manner, and the holes on the filter screen located above are slightly larger than the holes on the filter screen located below. The size of the filter holes is slightly smaller than the holes on the two filter screens.

[0009] As a further solution of the present utility model: jacks are provided on the outer ring, a plug rod is connected to the outer ring, rubber balls are connected to both ends of the plug rod, there are two outer rings in total which are distributed on the bag body in a mirror-symmetrical manner, and the jacks and the plug rods on the two outer rings are distributed in a staggered manner.

[0010] As a further solution of the present utility model: the sealing ring is arranged between the first friction pad and the second friction pad, a rubber pad is connected above the annular plate, and anti-slip lines are arranged above the rubber pad.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the filter bag used in the double-filter, by providing filter holes, limit grooves, limit plates, slots, plug plates, grooves, springs, fixing blocks and fixing grooves, the plug plate on the filter net is inserted into the slot, and at the same time the limit plate will be engaged with the limit groove. As the plug plate is inserted, the slot wall will push the fixing block through the spherical surface on one side of the fixing block, so that the fixing block slides into the groove to compress the spring, and then the spring rebounds to push the fixing block into the fixing groove, so that the fixing block is engaged with the fixing groove, thereby fixing the filter net to prevent the filter net from sliding and falling. And in cooperation with the two filter nets and the filter holes at the bottom of the bag body, multi-stage filtration of impurities is carried out, improving the filtration effect of impurities.

[0013] 2. For the filter bag used in the double-filter, by providing an outer ring, a jack, a plug rod and a rubber ball, after the filter net is removed after filtration, the staff can fold the bag body, so that the two outer rings on the bag body approach each other, prompting the plug rods on the two outer rings to be inserted into each other's jacks. As the plug rod is inserted, the rubber ball will be squeezed and deformed, and the rubber ball will return to its original shape after passing through the jack, thereby fixing the two outer rings together and maintaining the folded shape of the bag body, thus facilitating the staff to store the bag body. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the sectional structure of the bag body of the present utility model;

[0016] Figure 3 It is a schematic diagram of the sectional structure of the annular plate of the present utility model;

[0017] Figure 4 It is a schematic diagram of the sectional structure of the inner ring and the plug plate of the present utility model;

[0018] Figure 5 It is Figure 4 a schematic diagram of the enlarged structure of part A in

[0019] In the figure: 1. bag body; 2. annular plate; 3. filter hole; 4. outer ring; 5. inner ring; 6. filter screen; 7. sealing ring; 8. first friction pad; 9. second friction pad; 10. limit groove; 11. slot; 12. limit plate; 13. plug plate; 14. groove; 15. spring; 16. fixing block; 17. fixing groove; 18. plug hole; 19. plug rod; 20. rubber ball; 21. rubber pad. DETAILED DESCRIPTION

[0020] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0021] like Figures 1-5 As shown, the utility model provides a technical solution: a filter bag for a double filter, comprising a bag body 1, an annular plate 2 is connected to the top of the bag body 1, a filter hole 3 is opened at the bottom of the bag body 1, an outer ring 4 is connected to the outside of the bag body 1, a plug hole 18 is opened on the outer ring 4, a plug rod 19 is connected to the outer ring 4, and rubber balls 20 are connected to both ends of the plug rod 19. There are two outer rings 4 distributed on the bag body 1 in a mirror-symmetrical manner, and the plug holes 18 and the plug rods 19 on the two outer rings 4 are staggered. When the bag body 1 is folded and stored, the plug rods 19 will be inserted into the plug holes 18. As the plug rods 19 are inserted, the rubber balls 20 will be squeezed into the plug holes 18, and will restore their shape after passing through the plug holes 18, thereby fixing the folded bag body 1 to facilitate storage by the staff.

[0022] An inner ring 5 is connected to the inner side of the bag body 1, and a filter screen 6 is installed on the bag body 1 through the inner ring 5. There are two filter screens 6 distributed in the bag body 1 in an upper and lower arrangement, and the holes on the upper filter screen 6 are slightly larger than the holes on the lower filter screen 6. The filter holes 3 are slightly smaller than the holes on the two filter screens 6. Impurities are filtered multiple times through the filter holes 3 and the two filter screens 6, which improves the impurity removal effect. The detachable filter screen 6 can facilitate the staff to clean the filter screen 6.

[0023] A sealing ring 7 is connected to the bottom of the annular plate 2, a first friction pad 8 is connected to the bottom of the annular plate 2, a second friction pad 9 is connected to the bottom of the annular plate 2, the sealing ring 7 is arranged between the first friction pad 8 and the second friction pad 9, a rubber pad 21 is connected to the top of the annular plate 2, and anti-slip patterns are arranged above the rubber pad 21. The friction between the annular plate 2 and the surface of the duplex filter is increased by the first friction pad 8 and the second friction pad 9 to prevent the annular plate 2 from sliding during installation and fixation, and the sealing ring 7 can seal the gap.

[0024] A limiting groove 10 is provided on the inner ring 5, and inserting slots 11 are provided on both sides of the inner ring 5. A limiting plate 12 is connected below the filter screen 6, and inserting plates 13 are connected to both sides of the filter screen 6. The limiting plate 12 is designed in an arc shape and is inserted into the limiting groove 10, and the inserting plates 13 are inserted into the inserting slots 11. By inserting the limiting plate 12 into the limiting groove 10, when the filter screen 6 is installed on the inner ring 5, the filter screen 6 can be kept flat, avoiding the generation of gaps due to wrinkles in the filter screen 6 and affecting the filtering effect.

[0025] A groove 14 is provided inside the inserting plate 13, a spring 15 is connected in the groove 14, one end of the spring 15 is connected with a fixing block 16, fixing grooves 17 are provided on the inner walls of both sides of the inserting slot 11, the fixing block 16 slides in the groove 14, the side of the fixing block 16 away from the spring 15 is designed in a spherical shape, and the fixing block 16 is fitted with the fixing groove 17. The slot wall of the inserting slot 11 can flexibly and quickly push the fixing block 16 to move through the spherical curved surface on one side of the fixing block 16, thus facilitating the installation and disassembly of the filter screen 6 by the staff.

[0026] The working principle of the present utility model is as follows:

[0027] The staff inserts the inserting plate 13 into the inserting slot 11, so that the limiting plate 12 is fitted with the limiting groove 10. As the inserting plate 13 is inserted, the slot wall of the inserting slot 11 will push the fixing block 16 into the groove 14, enabling the fixing block 16 to compress the spring 15. After the inserting plate 13 is completely inserted into the inserting slot 11, the spring 15 rebounds and pushes the fixing block 16 into the fixing groove 17, thereby fixing the filter screen 6 and preventing the filter screen 6 from sliding and falling. The impurities are filtered in multiple stages through the filter holes 3 and the two filter screens 6, improving the filtering effect on the impurities. After the filtering is completed, the staff can fold the bag body 1 to make the two outer rings 4 approach each other, prompting the insertion rod 19 to be inserted into the inserting slot 11. As the insertion rod 19 is inserted, the rubber ball 20 will be squeezed and deformed, and after passing through the insertion hole 18, the rubber ball 20 will return to its original shape, thereby fixing the two outer rings 4 together and maintaining the folded shape of the bag body 1 for the convenience of the staff to store.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The above describes in detail the preferred embodiments of the present patent. However, the present patent is not limited to the above embodiments, and various changes can be made without departing from the gist of the present patent within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A filter bag for a duplex filter, comprising a bag body (1), characterized in that: An annular plate (2) is connected above the bag body (1), a filter hole (3) is opened at the bottom of the bag body (1), an outer ring (4) is connected to the outside of the bag body (1), an inner ring (5) is connected to the inside of the bag body (1), a filter screen (6) is installed on the bag body (1) through the inner ring (5), a sealing ring (7) is connected below the annular plate (2), and a first friction pad (8) is connected below the annular plate (2); A second friction pad (9) is connected below the annular plate (2), a limiting groove (10) is provided on the inner ring (5), slots (11) are provided on both sides of the inner ring (5), a limiting plate (12) is connected below the filter (6), plug plates (13) are connected on both sides of the filter (6), a groove (14) is provided inside the plug plate (13), a spring (15) is connected inside the groove (14), and one end of the spring (15) is connected to a fixing block (16).

2. A filter bag for a duplex filter according to claim 1, characterized in that: The limiting plate (12) is designed to be arc-shaped and is inserted into the limiting groove (10), and the inserting plate (13) is inserted into the slot (11).

3. A filter bag for a duplex filter according to claim 1, characterized in that: The inner walls on both sides of the slot (11) are provided with fixing grooves (17), the fixing block (16) slides in the groove (14), the side of the fixing block (16) away from the spring (15) is spherical in design, and the fixing block (16) is engaged with the fixing groove (17).

4. A filter bag for a duplex filter according to claim 1, characterized in that: A total of two filter screens (6) are distributed in the bag body (1) in an upper and lower arrangement, and the holes on the upper filter screen (6) are slightly larger than the holes on the lower filter screen (6), and the filter holes (3) are slightly smaller than the holes on the two filter screens (6).

5. The filter bag for a duplex filter according to claim 1, characterized in that: The outer ring (4) is provided with an insertion hole (18), the outer ring (4) is connected to an insertion rod (19), both ends of the insertion rod (19) are connected to rubber balls (20), a total of two outer rings (4) are distributed on the bag body (1) in a mirror-symmetrical manner, and the insertion holes (18) and the insertion rods (19) on the two outer rings (4) are distributed in an alternating manner.

6. A filter bag for a duplex filter according to claim 1, characterized in that: The sealing ring (7) is arranged between the first friction pad (8) and the second friction pad (9); a rubber pad (21) is connected above the annular plate (2); and anti-slip patterns are arranged above the rubber pad (21).

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