Anti-splashing device for drainage pipeline of plate-and-frame filter press

Abstract

The utility model belongs to the technical field of filter press pipeline systems, and relates to an anti-splashing device for a drainage pipeline of a plate-and-frame filter press, which comprises the plate-and-frame filter press, a sludge inlet pipe is connected to the front side of the plate-and-frame filter press, a blowback sludge discharge pipe is connected to the sludge inlet pipe, a compressed air blowback pipe is connected to the rear side of the plate-and-frame filter press, and a compressed air blowback valve is arranged on the compressed air blowback pipe. Drain outlets are formed in the two sides of the bottom of the plate-and-frame filter press, a first water collecting tank and a second water collecting tank are arranged on the two sides of the bottom of the plate-and-frame filter press, a first water return pipe and a second water return pipe are led out of the drain pipes and connected with the front side of the plate-and-frame filter press, and an angle blowing air inlet pipe is connected to the second water return pipe. According to the utility model, the backflow of wastewater is not influenced, the backflow of wastewater is prevented, the backflow damage is avoided, the slurry splashing phenomenon of the water return pipeline is eliminated, the pressure of the back flushing pipeline is kept stable, and the accumulated water of the return water can flow to the water collecting tank, so that the waste of energy and resources is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of filter press pipeline systems, specifically relating to a splash-proof device for the drainage pipeline of a plate and frame filter press. Background Technology

[0002] In plate filter press backflushing systems used in various industries such as steel, metallurgy, chemical, and wastewater treatment, the connection between the compressed air pipeline, feed pipeline, and return water pipeline in the backflushing system was not considered during installation. During operation, the high compressed air pressure in the backflushing system and poor drainage in the water collection pipeline lead to mud splashing from the pipeline, polluting the working environment.

[0003] The design of the backflushing system for plate and frame filter presses lacks on-site effectiveness verification, leading to frequent cleaning operations by employees, increasing their workload, and posing safety hazards in terms of inherent safety hazard identification and risk assessment. There is also a risk of personal injury during employee inspections and maintenance. Existing technology adds a protective cover to one side of the water collection tank after the plate and frame filter press stops operating to prevent mud splashing from the pipeline; however, verification has shown that this method is not ideal in preventing mud splashing. Therefore, a splash-proof device for the drainage pipeline of a plate and frame filter press is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a splash-proof device for the drainage pipe of a plate and frame filter press. It has the function of preventing splashing of the drainage pipe of the plate and frame filter press and solves the problem that the existing technology does not consider the connection between the compressed air pipe of the back-flushing system and the feed pipe and return water pipe. During the operation of the plate and frame filter press, the high pressure of the compressed air in the back-flushing system and the poor drainage of the water collection pipe lead to the splashing of mud in the pipe and the pollution of the working environment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a splash-proof device for the drainage pipe of a plate and frame filter press, including a plate and frame filter press. A mud inlet pipe is connected to the front side of the plate and frame filter press, and a back-blowing mud discharge pipe is connected to the mud inlet pipe. A compressed air back-blowing pipe is connected to the rear side of the plate and frame filter press, and a compressed air back-blowing valve is installed on the compressed air back-blowing pipe. Drainage outlets are provided on both sides of the bottom of the plate and frame filter press. A first water collection tank and a second water collection tank are provided on both sides of the bottom of the plate and frame filter press. A drain pipe is connected to one side of the first water collection tank through a first connecting pipe, and a drain pipe is connected to one side of the second water collection tank through a second connecting pipe. A first return water pipe and a second return water pipe are led out from the drain pipe and connected to the front side of the plate and frame filter press. An angle blow air inlet pipe is connected to the second return water pipe.

[0006] Preferably, the mud inlet pipe is equipped with a mud inlet valve, and the backflushing mud discharge pipe is equipped with a backflushing mud discharge valve.

[0007] Preferably, the first water collection tank and the second water collection tank are respectively located below the drain outlets on both sides of the bottom of the plate and frame filter press, and a first connecting valve is provided on the first connecting pipe and a second connecting valve is provided on the second connecting pipe.

[0008] Preferably, a second return water valve is installed on the second return water pipe, and an angle blow air valve is installed on the angle blow air inlet pipe.

[0009] Preferably, both the first connecting valve and the second connecting valve are check valves.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. This utility model does not affect wastewater return. When the back-flushing system of the plate and frame filter press is running, it prevents sewage backflow, avoids backflow damage, eliminates mud splashing in the return water pipeline, and maintains stable pressure in the back-flushing pipeline. It can also allow the accumulated return water to flow into the collection tank, thereby avoiding the waste of energy and resources.

[0012] 2. This utility model has a splash-proof function for the drainage pipe of the plate and frame filter press, which solves the problem that the existing technology does not consider the connection between the compressed air pipe of the back-flushing system and the feed pipe and return water pipe. During the operation of the plate and frame filter press, the high pressure of the compressed air in the back-flushing system and the poor drainage of the water collection pipe lead to the splashing of mud in the pipe and pollution of the working environment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the anti-splash device for the drainage pipe of a plate and frame filter press according to one embodiment;

[0015] In the above diagram, 1 is a plate and frame filter press, 2 is a mud inlet pipe, 3 is a mud inlet valve, 4 is a backflush mud discharge pipe, 5 is a backflush mud discharge valve, 6 is a compressed air backflush pipe, 7 is a compressed air backflush valve, 8 is a drain outlet, 9 is the first water collection tank, 10 is the first connecting pipe, 11 is a drain pipe, 12 is the first connecting valve, 13 is the first return water pipe, 14 is the second return water pipe, 15 is the second return water valve, 16 is the second water collection tank, 17 is the angle blow air inlet pipe, 18 is the angle blow air inlet valve, 19 is the second connecting pipe, and 20 is the second connecting valve. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1, such as Figure 1 As shown, a splash-proof device for the drainage pipe of a plate and frame filter press includes a plate and frame filter press 1. The plate and frame filter press 1 is the main equipment used for solid-liquid separation and sludge dewatering, providing a sludge treatment platform and integrating all pipeline interfaces to ensure a compact structure. A sludge inlet pipe 2 is connected to the front of the plate and frame filter press 1, which transports the sludge to be treated to the plate and frame filter press 1. A backflushing sludge discharge pipe 4 is connected to the sludge inlet pipe 2, which discharges residual sludge from the sludge inlet pipe 2 during the backflushing stage, preventing sludge blockage and improving filtration efficiency.

[0019] A compressed air backflush pipe 6 is connected to the rear side of the plate and frame filter press 1. The compressed air backflush pipe 6 introduces high-pressure compressed air for backflushing. A compressed air backflush valve 7 is installed on the compressed air backflush pipe 6, controlling the on / off of the backflush air source and pressure. The compressed air backflush valve 7 is designed to prevent gas leakage and ensure stable backflush pressure. Drain outlets 8 are located on both sides of the bottom of the plate and frame filter press 1, discharging filtrate. A first water collection tank 9 and a second water collection tank 16 are also located on both sides of the bottom of the plate and frame filter press 1. The first water collection tank 9 and the second water collection tank 16 collect the filtrate from the drain outlets 8. The drain outlets 8 divert the filtrate to both sides, avoiding single-point convergence that could lead to pressure buildup.

[0020] One side of the first water collection tank 9 is connected to the drain pipe 11 via the first connecting pipe 10, and one side of the second water collection tank 16 is connected to the drain pipe 11 via the second connecting pipe 19. The first connecting pipe 10 and the second connecting pipe 19 respectively guide the filtrate from the first water collection tank 9 and the second water collection tank 16 into the drain pipe 11. A first return water pipe 13 and a second return water pipe 14 extend from the drain pipe 11 and connect to the front of the plate and frame filter press. The first return water pipe 13 and the second return water pipe 14 introduce water into the plate and frame filter press 1. The staged reflux design reduces pipe pressure. An angle blow air inlet pipe 17 is connected to the second return water pipe 14. The angle blow air inlet pipe 17 injects controllable airflow into the second return water pipe 14. The airflow pushes the water accumulated inside the plate and frame filter press 1 to flow, preventing blockage and solving the "poor drainage" problem, thus preventing mud retention and splashing.

[0021] The specific design of the aforementioned key components will be discussed in detail below:

[0022] The mud inlet pipe 2 is equipped with a mud inlet valve 3, which controls the opening and closing of the mud inlet pipe 2 to realize the start and stop of the process, facilitating maintenance and safe operation. The backflushing mud discharge pipe 4 is equipped with a backflushing mud discharge valve 5, which adjusts the opening and closing of the backflushing mud discharge pipe 4 and the intensity of compressed air backflushing.

[0023] The first water collection tank 9 and the second water collection tank 16 are respectively located below the drain outlets 8 on both sides of the bottom of the plate and frame filter press 1. A first connecting valve 12 is installed on the first connecting pipe 10, and a second connecting valve 20 is installed on the second connecting pipe 19. Both the first connecting valve 12 and the second connecting valve 20 are check valves. The check valves allow only unidirectional flow to prevent backflow of high-pressure gas or slurry and eliminate splashing caused by compressed air backflow during backflushing. After the check valves are installed, they do not affect the wastewater return flow. During the operation of the backflushing system of the plate and frame filter press 1, they control the splashing of wastewater and slurry at the source of the drain pipe 11, improve the inspection and maintenance working environment of the plate and frame filter press 1, reduce the intensity of slurry cleaning work for employees, eliminate design defects caused by equipment operation, ensure the safe, stable and continuous operation of the equipment, and eliminate the risk items of the hazard source identification for this position, ensuring the safety of employees during inspection operations.

[0024] The second return water pipe 14 is equipped with a second return water valve 15, which independently controls the opening and closing of the second return water pipe 14. The angle blow air inlet pipe 17 is equipped with an angle blow air inlet valve 18, which controls the opening and closing of the angle blow air inlet pipe 17.

[0025] 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. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A splash-proof device for the drainage pipe of a plate and frame filter press, comprising a plate and frame filter press, characterized in that, The plate and frame filter press is connected to a mud inlet pipe at the front, and a back-blowing mud discharge pipe is connected to the mud inlet pipe. A compressed air back-blowing pipe is connected to the rear of the plate and frame filter press, and a compressed air back-blowing valve is installed on the compressed air back-blowing pipe. Drainage outlets are provided on both sides of the bottom of the plate and frame filter press. A first water collection tank and a second water collection tank are provided on both sides of the bottom of the plate and frame filter press. A drain pipe is connected to one side of the first water collection tank through a first connecting pipe, and a drain pipe is connected to one side of the second water collection tank through a second connecting pipe. A first return water pipe and a second return water pipe are led out from the drain pipe and connected to the front of the plate and frame filter press. An angle blow air inlet pipe is connected to the second return water pipe.

2. The anti-splash device for the drainage pipe of a plate and frame filter press according to claim 1, characterized in that, The mud inlet pipe is equipped with a mud inlet valve, and the backflushing mud discharge pipe is equipped with a backflushing mud discharge valve.

3. The anti-splash device for the drainage pipe of a plate and frame filter press according to claim 1, characterized in that, The first water collection tank and the second water collection tank are respectively located below the drain outlets on both sides of the bottom of the plate and frame filter press. A first connecting valve is installed on the first connecting pipe and a second connecting valve is installed on the second connecting pipe.

4. The anti-splash device for the drainage pipe of a plate and frame filter press according to claim 1, characterized in that, A second return water valve is installed on the second return water pipe, and an angle blow air valve is installed on the angle blow air inlet pipe.

5. The anti-splash device for the drainage pipe of a plate and frame filter press according to claim 3, characterized in that, Both the first connecting valve and the second connecting valve are check valves.

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