Filter for paper dyeing with exhaust function

Abstract

The utility model provides a kind of filter for paper dye with exhaust function, it is related to paper dye filtering technical field, including industrial filter, industrial filter includes feed inlet, discharge port, valve and end cap, it further includes exhaust pipe, first check valve, U-shaped bend, mounting plate, limit platform and collection container;The application can make the air that cleaning replacement filter element and secondary installation end cap after entering the inside of filter is effectively discharged, and then the flow fluctuation in subsequent paper dye conveying process is significantly reduced, and the actual fluctuation amount can be ignored, and then the operation effect of subsequent paper machine is more stable, and the production quality of product is more optimal, at the same time, paper dye extruded in exhaust process can be accurately collected, and then the use effect of industrial filter for paper dye is better.

Description

Technical Field

[0001] This utility model relates to the field of papermaking dye filtration technology, and more specifically, to a papermaking dye filter with exhaust function. Background Technology

[0002] Currently, industrial filters are used to filter impurities from paper dyes. After prolonged use, the filter cartridges inside need to be disassembled, cleaned, or replaced. Specifically, during disassembly, the top end cap of the filter must first be removed (the end cap and the filter housing are circumferentially locked by several screws and nuts). After removing the end cap, the filter cartridge can be taken out.

[0003] Existing industrial filters use a top-in, bottom-out method to remove impurities from papermaking dyes. Simultaneously, a screw pump delivers the dyes into the filter. However, after cleaning or replacing the filter element and reinstalling the end cap, air enters the filter housing. This air ingress affects the subsequent dye delivery flow rate (the more air enters, the more pronounced the flow fluctuation). Flow fluctuations can easily lead to paper breaks and quality problems, impacting paper machine operation. Currently, the most common method to reduce flow fluctuations is to fill the filter with liquid as much as possible before sealing the end cap, minimizing air ingress. However, significant fluctuations still occur. Therefore, the problem of reducing dye flow fluctuations caused by internal air retention after cleaning and maintaining the filter element of a papermaking dye filter urgently needs to be addressed. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a filter for paper dyes with exhaust function.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A filter for papermaking dyes with exhaust function includes an industrial filter. The industrial filter includes an inlet, an outlet, a valve, and an end cap. It also includes an exhaust pipe, a first one-way valve, a U-shaped bend, a mounting plate, a limiting platform, and a collection container. The exhaust pipe is located on the end cap and connects to the inside of the filter; The input end of the first one-way valve, which only allows outflow but not inflow, is connected to the exhaust pipe; One end of the U-shaped bend is connected to the output end of the first check valve; The mounting plate is fixed to the exhaust pipe; The limiting platform used to limit the collection container is fixed on the mounting plate, and the other end of the U-shaped bend is directly above the collection container.

[0006] Furthermore, the U-shaped bend is connected to an inclined backflush pipe, which is connected to the output end of a second one-way valve that only allows air to enter but not exit. The input end of the second one-way valve is connected to the air pump output pipeline, and the air pump input pipeline is connected to an air source.

[0007] Furthermore, a cover is movably installed on the collection container, and a feed pipe is provided on the cover that is adapted to the size of the end of the U-shaped bend and is directly opposite it. The top end face of the feed pipe is flush with the end face of the U-shaped bend.

[0008] Furthermore, the U-shaped bend is a transparent tube.

[0009] Furthermore, the end cap is provided with a handle.

[0010] Furthermore, the cap and the collection container are symmetrically provided with ear plates, and ear holes are provided on the ear plates, with fixing bolts fitting inside the ear holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This application enables the effective discharge of air entering the filter after cleaning, replacing the filter element, and reinstalling the end cap, thereby significantly reducing flow fluctuations during the subsequent paper dye delivery process. The actual fluctuations are negligible, resulting in more stable paper machine operation and better product quality. At the same time, it can accurately collect the paper dye extruded during the exhaust process, thus improving the performance of industrial filters for paper dyes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the backflush pipe installation. Figure 3 This is a diagram illustrating the cap installation process. Figure label: 1. Industrial filter; 101. Inlet; 102. Outlet; 103. Valve; 104. End cap; 2. Exhaust pipe; 3. First check valve; 4. U-bend; 5. Mounting plate; 6. Limiting platform; 7. Collection container; 8. Backflush pipe; 9. Second check valve; 10. Cover; 11. Inlet pipe; 12. Handle; 13. Ear plate; 14. Fixing bolt. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: like Figure 1 As shown, a paper dye filter with exhaust function includes an industrial filter 1. The industrial filter 1 includes an inlet 101, an outlet 102, a valve 103, and an end cap 104. It also includes an exhaust pipe 2, a first one-way valve 3, a U-shaped bend 4, a mounting plate 5, a limiting platform 6, and a collection container 7. The exhaust pipe 2 is installed on the end cover 104 and is connected to the inside of the filter; The input end of the first one-way valve 3, which only allows outflow but not inflow, is connected to the exhaust pipe 2; One end of the U-shaped bend 4 is connected to the output end of the first one-way valve 3; Mounting plate 5 is fixed to exhaust pipe 2; The limiting platform 6 for limiting the collection container 7 is fixed on the mounting plate 5, and the other end of the U-shaped bend 4 is directly above the collection container 7.

[0014] To avoid the situation where papermaking dye remains in the U-shaped bend 4 for an extended period, leading to excessive dye solidification within the U-shaped bend 4, further optimizations to the above-described embodiments are made, such as... Figure 2 As shown, the U-shaped bend 4 is connected to an inclined backflush pipe 8, which is connected to the output end of the second one-way valve 9 (which only allows inflow and outflow). The input end of the second one-way valve 9 is connected to the air pump output pipe, and the air pump input pipe is connected to the air source (specifically, a nitrogen air source). The air pump and air source are not shown in the figure. Since the diameter of the U-shaped bend 4 is small, the pressurized airflow can effectively discharge most of the residual dye inside and collect it into the collection container 7 through backflush. Based on this, the U-shaped bend 4 made with a transparent tube can be viewed from the outside, thus minimizing the amount of papermaking dye extruded while venting.

[0015] To reduce the risk of airborne impurities falling into the collection container 7 and contaminating the quality of the extruded dye, further optimizations to the above-described embodiments are made, such as... Figure 3 As shown, a cover 10 is movably installed on the collection container 7. A feed pipe 11 is provided on the cover 10, which is adapted to the size of the end of the U-shaped bend 4 and is directly opposite it. The top end face of the feed pipe 11 is flush with the end face of the U-shaped bend 4. Specifically, ear plates 13 are symmetrically arranged on the cap 10 and the collection container 7. Ear holes (not shown in the figure) are provided on the ear plates 13, and fixing bolts 14 are fitted inside the ear holes.

[0016] To facilitate the removal and installation of the filter element by taking the transfer end cap 104, further optimizations to the above embodiment are made, such as... Figure 2 As shown, a handle 12 is provided on the end cap 104.

[0017] It should be noted that the process of disassembling and installing the internal filter element is common knowledge that should be known to those skilled in the art, and therefore no improvement is made in this application and the process is not described.

[0018] The working process of this utility model: After cleaning and maintaining the filter element, reinstall and lock the end cap 104 on top of the industrial filter 1 (at this time, gas will enter). At this time, the valves 103 on the inlet 101 and outlet 102 are both closed. Then, first open the valve 103 on the inlet 101, and then introduce paper dye into the industrial filter 1 through the screw pump. Then, the pressure gauge installed on the pipeline connected to the inlet 101 will provide feedback on the current pressure value in the filter (at this time, the valve 103 on the outlet 102 is not open, and the pressure gauge is not shown in the figure). When the pressure value reaches the preset value range, the valve 103 on the outlet 102 will open. As the pressure in the filter increases, the gas retained inside the filter is discharged through the exhaust pipe 2, along with paper dye. Both then flow out through the first one-way valve 3 into the U-shaped bend 4, and finally the gas is released into the external environment. A small amount of paper dye is injected into the collection container 7 from the U-shaped bend 4 for storage. After one exhaust process is completed, the collection container 7 is immediately removed, and the paper dye is transferred to a fixed area for unloading for subsequent recycling. After unloading, the collection container 7 can be cleaned and then returned to its initial position to await the next exhaust. At this time, all the gas in the filter is discharged, and the flow fluctuation of the dye during the subsequent flow transport process is negligible, resulting in better paper machine operation and more stable product quality.

[0019] 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 descriptions of the above embodiments and specifications are merely illustrative of the principles of this 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 protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filter for papermaking dyes with exhaust function, comprising an industrial filter (1), the industrial filter (1) including an inlet (101), an outlet (102), a valve (103), and an end cap (104), characterized in that, It also includes an exhaust pipe (2), a first one-way valve (3), a U-shaped bend (4), a mounting plate (5), a limiting platform (6), and a collection container (7). The exhaust pipe (2) is installed on the end cap (104) and the exhaust pipe (2) is connected to the inside of the filter; The input end of the first one-way valve (3), which only allows outflow but not inflow, is connected to the exhaust pipe (2); One end of the U-shaped bend (4) is connected to the output end of the first check valve (3); The mounting plate (5) is fixed on the exhaust pipe (2); The limiting platform (6) for limiting the collection container (7) is fixed on the mounting plate (5), and the other end of the U-shaped bend (4) is directly above the collection container (7).

2. A filter for papermaking dyes with exhaust function according to claim 1, characterized in that, The U-shaped bend (4) is connected to an inclined backflush pipe (8), which is connected to the output end of a second one-way valve (9) that only allows air to enter and not exit. The input end of the second one-way valve (9) is connected to the air pump output pipeline, and the air pump input pipeline is connected to the air source.

3. A filter for papermaking dyes with exhaust function according to claim 1, characterized in that, The collection container (7) is movably fitted with a cover (10), and the cover (10) is provided with a feed pipe (11) that is adapted to the size of the end of the U-shaped bend (4) and is directly opposite it. The top end face of the feed pipe (11) is flush with the end face of the U-shaped bend (4).

4. A filter for papermaking dyes with exhaust function according to claim 2, characterized in that, The U-shaped bend (4) is a transparent tube.

5. A filter for papermaking dyes with exhaust function according to claim 1, characterized in that, The end cap (104) is provided with a handle (12).

6. A filter for papermaking dyes with exhaust function according to claim 3, characterized in that, The cover (10) and the collection container (7) are symmetrically provided with ear plates (13), and ear holes are provided on the ear plates (13), with fixing bolts (14) fitting inside the ear holes.

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