Device for nanometer calcium carbonate pressure filtration leak back use

Abstract

The utility model provides a kind of for nano calcium carbonate filter-pressing leakproof back device, its technical scheme is: including filter-pressing storage tank, the filter-pressing storage tank's discharge outlet is connected with the feed inlet of plate-and-frame filter press by pipeline, the pipeline is equipped with filter-pressing feed pump, the water outlet of plate-and-frame filter press is equipped with drain pipeline, drain pipeline has two branches, one branch is drain branch and is connected to the water inlet of water treatment adjusting pool, another branch is back material branch and is connected to the top of filter-pressing storage tank.The utility model has beneficial effects: (1) reduce material waste, reduce environmental protection risk;(2) detect leakage hidden danger in time, improve maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of nano-calcium carbonate production technology, and in particular relates to a device for preventing leakage and recycling nano-calcium carbonate through pressure filtration. Background Technology

[0002] During the filter press process, nano-calcium carbonate may experience filter cloth damage, wrinkles, uneven placement, uncleaned filter cloth, filter plate deformation, aging, or displacement, resulting in leakage of nano-calcium carbonate slurry that directly enters the water treatment equalization tank. This not only wastes materials and increases production costs but also increases environmental risks. Summary of the Invention

[0003] To address the leakage problem of nano-calcium carbonate slurry in the prior art, this utility model provides a leakage prevention and reuse device for nano-calcium carbonate filter press. The technical solution includes a filter press storage tank. The outlet of the filter press storage tank is connected to the inlet of a plate and frame filter press via a pipe. A filter press feed pump is installed on the pipe. The drain outlet of the plate and frame filter press is equipped with a drain pipe with two branches. One branch is a drainage branch connected to the inlet of a water treatment regulating tank, and the other branch is a return branch connected to the top of the filter press storage tank.

[0004] In a preferred embodiment, a check valve and a pneumatic feed ball valve are sequentially installed on the pipe at the discharge end of the filter press feed pump, and the allowable flow direction of the check valve is consistent with the direction of the material conveyed by the filter press feed pump.

[0005] In a preferred embodiment, a sight glass is installed on the side of the drainage pipe near the drain outlet of the plate and frame filter press.

[0006] In a more preferred embodiment, a camera is provided above the viewing mirror, and the camera's shooting direction is the surface of the viewing mirror.

[0007] In a preferred embodiment, a pneumatic drain ball valve is provided on the drainage branch.

[0008] In a preferred embodiment, a pneumatic return ball valve is provided on the return branch.

[0009] In a preferred embodiment, the top of the filter press storage tank is equipped with an electric motor, and the drive end of the electric motor is fixedly equipped with an agitator, which is used to agitate the material in the filter press storage tank.

[0010] The beneficial effects of this utility model are: (1) By setting up a return branch connected to the filter press storage tank in the drainage pipe, the nano-calcium carbonate material carried in the drainage of the plate and frame filter press can be returned to the storage tank for reprocessing, avoiding material loss caused by leakage directly entering the water treatment regulating tank, reducing production costs, and reducing the environmental pressure caused by leakage. (2) The sight glass installed on the drainage pipe can intuitively show the drainage status. With the camera above it, it can realize real-time monitoring of the filter water. When a leakage problem occurs (the filter water changes from colorless to white), the DCS control system will close the pneumatic drainage ball valve and open the pneumatic return ball valve to discharge the leaked slurry back to the filter storage tank. Then, the filter feed pump and the pneumatic feed ball valve will be closed simultaneously, and the staff will be prompted to carry out maintenance, which will improve maintenance efficiency and further reduce the losses caused by slurry leakage. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] In the diagram: 1. Filter press storage tank; 2. Filter press feed pump; 3. Check valve; 4. Pneumatic feed ball valve; 5. Plate and frame filter press; 6. Drainage pipe; 7. Sight glass; 8. Camera; 9. Pneumatic drain ball valve; 10. Pneumatic return ball valve; 11. Water treatment equalization tank; 12. Electric motor; 13. Agitator. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Example like Figure 1 The device shown for leak-proof and reusable nano-calcium carbonate filter press includes a filter press storage tank 1. The outlet of the filter press storage tank 1 is connected to the inlet of the plate and frame filter press 5 via a pipe. A filter press feed pump 2 is installed on the pipe. The drain outlet of the plate and frame filter press 5 is equipped with a drain pipe 6. The drain pipe 6 has two branches: one branch is a drainage branch connected to the inlet of the water treatment regulating tank 11, and the other branch is a return branch connected to the top of the filter press storage tank 1.

[0015] Furthermore, a check valve 3 and a pneumatic feed ball valve 4 are sequentially installed on the pipe at the discharge end of the filter press feed pump 2. The allowable flow direction of the check valve 3 is consistent with the direction of the material conveyed by the filter press feed pump 2.

[0016] Furthermore, a sight glass 7 is installed on the side of the drainage pipe 6 near the drain outlet of the plate and frame filter press 5.

[0017] Furthermore, a camera 8 is provided above the viewing mirror 7, and the camera 8 is aimed at the surface of the viewing mirror 7.

[0018] Furthermore, a pneumatic drain ball valve 9 is provided on the drainage branch.

[0019] Furthermore, a pneumatic return ball valve 10 is provided on the return branch.

[0020] Furthermore, the top of the filter press storage tank 1 is provided with an electric motor 12, and the drive end of the electric motor 12 is fixedly provided with a stirring paddle 13, which is used to stir the material in the filter press storage tank 1.

[0021] The opening and closing of the aforementioned filter press feed pump 2, pneumatic feed ball valve 4, pneumatic drain ball valve 9, and pneumatic return ball valve 10 are remotely controlled by the DCS control system; the images captured by the camera 8 are sent to the DCS control system for analysis.

[0022] The operation of the above-mentioned device is as follows: The filter press feed pump 2 is started, and the pneumatic feed ball valve 4 is opened. The nano-calcium carbonate slurry in the filter press storage tank 1 is transported to the plate and frame filter press 5 through a pipeline. The check valve 3 prevents the slurry from flowing back into the storage tank. The slurry is filtered through the filter cloth in the plate and frame filter press 5, and the solid nano-calcium carbonate is retained to form a filter cake. The filtered filter water (colorless and transparent) enters the drain pipe 6 through the drain outlet. The DCS control system confirms that the water flow in the sight glass captured by the camera 8 is colorless and transparent (no leakage), keeps the pneumatic drain ball valve 9 open and the pneumatic return ball valve 10 closed, and the clean water is directly discharged into the water treatment regulating tank 11 through the drain branch, completing the routine filter press drainage. The camera 8 monitors the sight glass 7 in real time and transmits the data to the DCS control system, synchronously monitoring the pressure changes of the filter press feed pump (if the pressure rises suddenly, it indicates that the filter cloth may be clogged and needs to be cleaned in time); the stirring paddle 13 runs continuously at low speed to maintain the uniformity of the slurry in the storage tank. When the filter cake thickness inside plate and frame filter press 5 reaches the set value, the DCS control system prompts the operator to stop feeding, start the filter press to unload, replace the filter cloth or clean the filter plate and then restart to ensure continuous filtration.

[0023] When the plate and frame filter press 5 experiences problems such as filter cloth damage or filter plate displacement, the nano-calcium carbonate slurry mixes with the drainage pipe, causing the water in the sight glass 7 to change from colorless to white and turbid. After the camera 8 detects the color change, it immediately sends a "leakage alarm signal" to the DCS control system. The DCS control system immediately closes the pneumatic drainage ball valve 9 (blocking the leakage from entering the water treatment regulating tank 11) and simultaneously opens the pneumatic return ball valve 10. At this time, the slurry containing material in the drainage pipe 6 flows back to the top of the filter press storage tank 1 through the return branch, realizing the recovery of the leakage. The DCS control system simultaneously closes the pneumatic feed ball valve 4 and stops the filter press feed pump 2 to prevent the continued delivery of slurry to the faulty filter press. A prompt "Leakage fault, plate and frame filter press needs to be repaired" pops up on the operation interface. The staff quickly inspects the plate and frame filter press 5 according to the prompt, replaces the damaged filter cloth, adjusts the displaced filter plate, or repairs the aging parts.

Claims

1. A device for nanometer calcium carbonate filter leakage back to use, comprising filter press tank (1), characterized in that, The outlet of the filter press storage tank (1) is connected to the inlet of the plate and frame filter press (5) through a pipe. The pipe is equipped with a filter press feed pump (2). The outlet of the plate and frame filter press (5) is equipped with a drainage pipe (6). The drainage pipe (6) has two branches. One branch is a drainage branch connected to the inlet of the water treatment regulating tank (11), and the other branch is a return branch connected to the top of the filter press storage tank (1).

2. The device for nanometer calcium carbonate filter leakage back to use of claim 1, characterized in that, A check valve (3) and a pneumatic feed ball valve (4) are sequentially installed on the pipe at the discharge end of the filter press feed pump (2). The allowable flow direction of the check valve (3) is consistent with the direction of the material conveyed by the filter press feed pump (2).

3. The device for leak-proof and reusable nano-calcium carbonate pressure filtration according to claim 1, characterized in that, The drainage pipe (6) is equipped with a sight glass (7) on the side near the drain outlet of the plate and frame filter press (5).

4. The leak-proof and reusable device for nano-calcium carbonate pressure filtration according to claim 3, characterized in that, A camera (8) is provided above the viewing mirror (7), and the shooting direction of the camera (8) is aimed at the surface of the viewing mirror (7).

5. The leak-proof and reusable device for nano-calcium carbonate pressure filtration according to claim 1, characterized in that, A pneumatic drain ball valve (9) is installed on the drainage branch.

6. The device for leak-proof and reusable nano-calcium carbonate pressure filtration according to claim 1, characterized in that, A pneumatic return ball valve (10) is provided on the return branch.

7. The device for leak-proof and reusable nano-calcium carbonate pressure filtration according to claim 1, characterized in that, The top of the filter press storage tank (1) is equipped with an electric motor (12), and the driving end of the electric motor (12) is fixedly equipped with a stirring paddle (13). The stirring paddle (13) is used to stir the material in the filter press storage tank (1).

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