A replaceable filter bag for a bag filter

Abstract

The application relates to a replaceable filter bag type filter, which comprises a tank body, a feed inlet and a discharge outlet fixed on the tank body, a support disc fixed on the upper end of the tank body, and a tank cover detachably installed on the upper end of the tank body, and a plurality of metal mesh baskets are slidably inserted into the support disc; the filter bag can be fixed on the metal mesh basket through a process of sleeving, edge rolling and ring pressing, without the need of complex tools, and subsequent insertion of the metal mesh basket with the filter bag into a hole of the support disc can complete the filtering preparation, the installation steps are greatly simplified, the assembly efficiency is improved, when being disassembled, the metal mesh basket and the filter bag can be taken out by moving the support ring upwards on the handle, the filter bag can be separated from the mesh basket by pulling down after pulling out the friction ring, without the need of disassembling a complex structure, and the filter bag can be quickly cleaned or replaced.

Description

Technical Field

[0001] This application relates to the field of filter bag technology, and in particular to a bag filter with replaceable filter bags. Background Technology

[0002] Bag filters are a type of multi-purpose filtration equipment with novel structure, small size, energy saving and strong applicability. Bag filters are a new type of filtration system. Inside the bag filter, the filter bag is supported by a metal mesh basket. Liquid flows in through the inlet, is filtered by the filter bag and flows out through the outlet. Impurities are intercepted in the filter bag. The filter can be used again after the filter bag is replaced.

[0003] Bag filters are made by inserting one or more metal mesh baskets into a support plate inside the tank and then fitting filter bags onto the metal mesh baskets. However, the existing technology has a rather cumbersome method of fixing filter bags to metal mesh baskets, and it is inconvenient to disassemble and replace filter bags when multiple metal mesh baskets are fitted onto the support plate.

[0004] Therefore, those skilled in the art have provided a bag filter with replaceable filter bags to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the problems mentioned in the background art, this application provides a bag filter with replaceable filter bags. Simply move the support ring upwards by holding the handle to bring out the metal mesh basket and filter bag, and then pull out the friction pressure ring to pull the filter bag down and detach it from the mesh basket.

[0006] The bag filter with replaceable filter bags provided in this application adopts the following technical solution:

[0007] A bag filter with replaceable filter bags includes a tank, a feed inlet and a discharge outlet fixed to the tank, a support plate fixed to the upper part of the tank, and a tank cover that can be detachably installed on the upper part of the tank. Several metal mesh baskets are slidably inserted into the support plate, and each metal mesh basket is fitted with a filter bag. The upper end of the filter bag has a rolled edge that rolls inward toward the upper end of the metal mesh basket, forming a hole at the upper end of the filter bag. A friction ring for pressing the rolled edge is slidably inserted into the upper end of the metal mesh basket. A support ring is integrally formed on the upper end of the friction ring, and a handle is fixed to the inner wall of the upper end of the support ring.

[0008] In this invention, the rolled edge at the upper end of the filter bag is pressed and fixed by the friction pressure ring and the inner wall of the metal mesh basket. At the same time, the relative positions of the support ring, friction pressure ring and metal mesh basket can be firmly locked by the limiting cooperation of the slider, L-shaped fixing rod and inner ring, which effectively prevents the friction pressure ring from separating from the rolled edge during the filtration process and ensures stable filtration.

[0009] In this invention, the friction force between the friction ring, the rolled edge, and the metal mesh basket is sufficient to clamp the filter bag.

[0010] Preferably, the handle has a U-shaped structure, and two sliders are slidably connected to the handle. A fixing rod is fixed to the lower end of the slider, and an inner ring is fixed inside the upper end of the metal mesh basket. The end of the fixing rod is inserted into the inner side of the inner ring.

[0011] Preferably, the fixing rod has an L-shaped structure, a spring is fixed between the slider and the handle, the inner ring has two fixing holes, and the bottom end of the fixing rod is inserted into the fixing holes.

[0012] Preferably, three support plates are fixed to the upper end of the support ring, and the lower end of the support plate is in contact with the upper surface of the support plate.

[0013] Preferably, the outer corner of the bottom end of the friction ring is rounded, and the bottom end of the support ring is attached to the upper end of the metal mesh basket.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. The filter bag of this application can be fixed on the metal mesh basket by the process of putting on the filter bag, rolling the edge and pressing down the pressure ring. No complicated tools are required. Afterwards, the metal mesh basket with the filter bag is inserted into the hole of the support plate to complete the filtration preparation. The installation steps are greatly simplified and the assembly efficiency is improved.

[0016] 2. During disassembly, simply hold the handle and move the support ring upwards to remove the metal mesh basket and filter bag. Then, pull out the friction pressure ring to pull the filter bag down and detach it from the mesh basket. There is no need to disassemble the complex structure, which facilitates quick cleaning or replacement of the filter bag and reduces maintenance and time costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application;

[0018] Figure 2 This is a schematic diagram of the friction pressure ring, filter bag, and metal mesh basket of this application;

[0019] Figure 3 This application Figure 2 The cross-sectional view shown is shown in the diagram.

[0020] Figure 4 This is a schematic diagram of the support ring and friction pressure ring of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Tank body; 2. Support plate; 3. Handle; 4. Tank lid; 5. Feed inlet; 6. Support plate; 7. Support ring; 8. Metal mesh basket; 9. Discharge outlet; 10. Friction pressure ring; 11. Inner ring; 12. Filter bag; 13. Rolled edge; 14. Fixing hole; 15. Fixing rod; 16. Slider; 17. Spring; 18. Hole; 19. Rounded corner. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, this application discloses a bag filter with replaceable filter bags, including a tank 1, a fixed inlet 5 and outlet 9 on the tank 1, a support plate 6 fixed at the upper end of the tank 1, and a tank cover 4 that can be detachably installed at the upper end of the tank 1. Several metal mesh baskets 8 are slidably inserted into the support plate 6, and each metal mesh basket 8 is fitted with a filter bag 12. The liquid to be filtered enters through the inlet 5, passes through the support ring 7 and enters the interior of each filter bag 12 for filtration. The filtered liquid flows out through the outlet 9 for collection. The upper end of the filter bag 12 has a rolled edge 13 rolled into the upper end of the metal mesh basket 8, forming a hole 18 at the upper end of the filter bag 12. A friction ring 10 for pressing the rolled edge 13 is slidably inserted into the upper end of the metal mesh basket 8. A support ring 7 is integrally formed on the upper end of the friction ring 10, and a handle 3 is fixed on the inner wall of the upper end of the support ring 7.

[0024] By adopting the above technical solution, the filter bag 12 is fitted over the metal mesh basket 8, with the upper end of the filter bag 12 extending beyond the upper end of the metal mesh basket 8. This causes the upper end of the filter bag 12 to curl inward toward the upper end of the metal mesh basket 8 to form a rolled edge 13, which adheres to the inner wall of the upper end of the metal mesh basket 8. At this time, the friction pressure ring 10 can be pressed down into the upper end of the metal mesh basket 8, so that the friction pressure ring 10 and the inner wall of the metal mesh basket 8 together squeeze the rolled edge 13, pressing the filter bag 12 tightly onto the metal mesh basket 8, which facilitates the installation of the filter bag 12. Then, the metal mesh basket 8 with the filter bag 12 fitted over it can be inserted into the hole (not shown in the figure) in the inner wall of the support plate 6 to install the filter bag 12 for filtration.

[0025] During disassembly, by holding the handle 3, move the support ring 7 upwards, so that the friction pressure ring 10, the metal mesh basket 8 and the filter bag 12 are moved upwards and out of the tank 1 together. Then, the friction pressure ring 10 on the metal mesh basket 8 can be pulled out forcefully, and the filter bag 12 can be pulled down to detach from the metal mesh basket 8, making it convenient to clean and replace the filter bag 12.

[0026] The handle 3 has a U-shaped structure and is slidably connected to two sliders 16. A fixing rod 15 is fixed to the lower end of each slider 16. An inner ring 11 is fixed inside the upper end of the metal mesh basket 8. The end of the fixing rod 15 is inserted into the inner side of the inner ring 11. The fixing rod 15 has an L-shaped structure. A spring 17 is fixed between the slider 16 and the handle 3. The inner ring 11 has two fixing holes 14, and the bottom end of the fixing rod 15 is inserted into the fixing holes 14. When the filter bag 12 is placed over the metal mesh basket 8, and the rolled edge 13 at the upper end of the filter bag 12 is pressed by the friction pressure ring 10, the lower end of the slider 16... The end of the L-shaped fixing rod 15 is inserted into the fixing hole 14 of the inner ring 11, and the inner ring 11 is fixed to the metal mesh basket 8. Thus, the support ring 7, friction pressure ring 10 and metal mesh basket 8 are fixed by the limiting of the fixing rod 15, the inner ring 11, the slider 16 and the handle 3, and the rolled edge 13 is pressed to prevent the friction pressure ring 10 from separating from the metal rolled edge 13 during filtration. By sliding the slider 16 to stretch the spring 17, the fixing rod 15 is moved to move away from the inner ring 11, and the friction pressure ring 10 can be moved up to separate from the metal mesh basket 8, so as to pull down the filter bag 12 for disassembly.

[0027] Three support plates 2 are fixed at the upper end of the support ring 7, and the lower end of the support plate 2 is in contact with the upper surface of the support plate 6. When the metal mesh basket 8 with the filter bag 12 is inserted into the support plate 6, the metal mesh basket 8 can be supported by the support plate 2 for the filtration work of the filter bag 12.

[0028] The outer corner of the friction pressure ring 10 is rounded 19. The bottom end of the support ring 7 is attached to the upper end of the metal mesh basket 8. The rounded corner 19 on the outer side of the friction pressure ring 10 prevents wear on the rolled edge 13 when the friction pressure ring 10 is pressed down into the upper end of the metal mesh basket 8, which is beneficial to the protection of the upper end of the filter bag 12.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] Working principle: By sliding the slider 16 to stretch the spring 17, the fixed rod 15 moves and disengages from the inner ring 11. By holding the handle 3, the support ring 7 is moved upward, causing the friction pressure ring 10, the metal mesh basket 8, and the filter bag 12 to move upward and out of the tank 1 together. At this time, the friction pressure ring 10 on the metal mesh basket 8 can be pulled out forcefully, and the filter bag 12 can be pulled down to disengage from the metal mesh basket 8, making it convenient to clean and replace the filter bag 12.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bag filter with replaceable filter bags, comprising a tank (1), a feed inlet (5) and a discharge outlet (9) fixed to the tank (1), a support plate (6) fixed to the upper part of the tank (1), and a tank cover (4) detachably installed on the upper part of the tank (1), characterized in that: The support plate (6) has several metal mesh baskets (8) slidably inserted, and each metal mesh basket (8) is fitted with a filter bag (12). The upper end of the filter bag (12) is formed by a rolled edge (13) rolled into the upper end of the metal mesh basket (8), forming a hole (18) at the upper end of the filter bag (12). The metal basket (8) has a friction ring (10) for pressing the rolled edge (13) inserted into its upper end. The friction ring (10) has a support ring (7) integrally formed on its upper end. The support ring (7) has a handle (3) fixed on its upper inner wall.

2. A bag filter with replaceable filter bags according to claim 1, characterized in that: The grip (3) has a U-shaped structure and two sliders (16) are slidably connected to the grip (3). A fixing rod (15) is fixed at the lower end of the slider (16). An inner ring (11) is fixed inside the upper end of the metal basket (8). The end of the fixing rod (15) is inserted into the inner side of the inner ring (11).

3. A bag filter with replaceable filter bags according to claim 2, characterized in that: The fixing rod (15) has an L-shaped structure. A spring (17) is fixed between the slider (16) and the handle (3). The inner ring (11) has two fixing holes (14). The bottom end of the fixing rod (15) is inserted into the fixing hole (14).

4. A bag filter with replaceable filter bags according to claim 1, characterized in that: The upper end of the support ring (7) is fixed with three support plates (2), and the lower end of the support plates (2) is attached to the upper surface of the support plate (6).

5. A bag filter with replaceable filter bags according to claim 1, characterized in that: The outer side of the bottom end of the friction pressure ring (10) is rounded (19), and the bottom end of the support ring (7) is attached to the upper end of the metal mesh basket (8).

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