Disc type membrane off-line cleaning device

Abstract

The invention belongs to the technical field of chemical engineering and environmental engineering, and particularly relates to a disc type membrane offline cleaning device. Comprising a cleaning pool, an ultrasonic generating plate and a heating rod are arranged at the bottom in the cleaning pool, a liftable draining frame is installed on the upper portion of the cleaning pool and used for containing a disc type membrane, a water outlet is formed in the bottom of the cleaning pool, and the water outlet is sequentially communicated with a centrifugal pump and a filter through a pipeline. A water outlet of the filter is communicated with the upper portion of the cleaning pool through a pipeline, and valves are communicated with the pipeline between the centrifugal pump and the cleaning pool and the pipeline between the centrifugal pump and the filter. According to the device, cleaning of the disc type membrane can be rapidly completed, the cleaning action of the disc type membrane can be completed by arranging the ultrasonic generation plate, the heating rod, the centrifugal pump and other structures, and compared with a traditional manual cleaning method, time is greatly saved, the cleaning effect is improved, and damage to the disc type membrane in the manual cleaning period is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical engineering and environmental engineering, and in particular relates to a disc-type membrane off-line cleaning device. Background Art

[0002] Membrane separation technology is an efficient and environmentally friendly separation and purification technology, which is widely used in water treatment, food and beverage, medicine, chemical industry, energy and other fields. In membrane separation technology, membrane elements are the core components, and their role is to achieve separation and purification of substances through selective separation. Since membrane elements may be affected by factors such as pollution, puncture, and damage during use, resulting in degradation of performance or even failure, it is necessary to regularly replace or clean the disc membrane to ensure the normal operation of the membrane separation system. However, in practical applications, the process of replacing and cleaning membrane elements is not easy. Due to the large number of disc membranes, each membrane device determines the number of membrane columns based on the amount of water flowing. A single membrane column has nearly 200-250 disc membranes. When there are contaminants on the surface of the disc membrane, when online cleaning cannot be thoroughly cleaned, it is necessary to use an offline cleaning method to remove them, otherwise it will affect the performance of the membrane element. Therefore, disc membrane cleaning has become an important research topic in membrane technology.

[0003] Most existing cleaning methods for disc-type membranes use manual cleaning, which not only has poor cleaning effect and low efficiency, but also easily causes physical damage such as scratches and bumps to the disc-type membrane during the cleaning process, thereby affecting the use of the disc-type membrane.

[0004] Therefore, in order to solve this problem, it is urgent to design a disc membrane offline cleaning device which has good cleaning effect, high cleaning efficiency and will not cause damage to the disc membrane. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention discloses a disc-type membrane offline cleaning device, and specifically discloses the following technical solutions:

[0006] A disc membrane offline cleaning device comprises a cleaning tank, wherein an ultrasonic generating plate and a heating rod are arranged at the bottom of the cleaning tank, a liftable drain rack is installed at the upper part of the cleaning tank, and the liftable drain rack is used to hold the disc membrane, a water outlet is arranged at the bottom of the cleaning tank, a centrifugal pump and a filter are connected to the water outlet in sequence through pipelines, a drain port of the filter is connected to the upper part of the cleaning tank through a pipeline, and valves are connected on the pipelines between the centrifugal pump and the cleaning tank and on the pipelines between the centrifugal pump and the filter.

[0007] Furthermore, an ultrasonic generator is arranged outside the cleaning pool, and an ultrasonic wave conducting cable is connected between the ultrasonic generator and the ultrasonic wave generating plate.

[0008] Furthermore, the filter is a bag filter.

[0009] Furthermore, the pipelines are all made of stainless steel pipelines.

[0010] Furthermore, the liftable drain rack includes a drain basket, and a pair of gears are fixedly installed on the two opposite inner walls of the cleaning pool, and one gear is located at the top of the cleaning pool, and the other gear is located at the bottom of the cleaning pool. The gear located at the top of the cleaning pool is fixedly connected to the output shaft of the driving motor, and the two gears located on the same side are connected by a chain transmission, and the two sides of the drain basket are respectively fixedly connected to the chains on both sides.

[0011] Furthermore, a plurality of partitions are arranged in the drain basket, and the partitions are used to divide the drain basket into a plurality of drain troughs.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The device of the present invention can quickly complete the cleaning of the disc membrane. By setting up structures such as an ultrasonic generating plate, a heating rod and a centrifugal pump, the cleaning action of the disc membrane can be completed. Compared with the traditional manual cleaning method, it greatly saves time, improves the cleaning effect, and reduces the damage of the disc membrane during manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] 1-cleaning tank, 2-ultrasonic generator, 3-centrifugal pump, 4-filter, 5-heating rod, 6-liftable drain rack. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1

[0018] Reference Figure 1, a disc membrane offline cleaning device, comprising a cleaning pool 1, wherein an ultrasonic generating plate and a heating rod 5 are arranged at the bottom of the cleaning pool 1, which are respectively used to provide ultrasonic waves and heat the water in the cleaning pool 1, and a liftable drain rack 6 is installed at the upper part of the cleaning pool 1, and the liftable drain rack 6 is used to hold the disc membrane, and a water outlet is arranged at the bottom of the cleaning pool 1, and a centrifugal pump 3 and a filter 4 are connected to the water outlet in sequence through a pipeline, and the drain port of the filter 4 is connected to the upper part of the cleaning pool 1 through a pipeline, and the water in the cleaning pool 1 can be re-input into the cleaning pool after being filtered by the filter 4, thereby realizing the continuous circulation and purification of the water in the cleaning pool 1 to ensure the cleaning effect, and valves are connected on the pipeline between the centrifugal pump 3 and the cleaning pool 1 and on the pipeline between the centrifugal pump 3 and the filter 4.

[0019] In this embodiment, an ultrasonic generator 2 is provided outside the cleaning tank 1, and an ultrasonic transmission cable is connected between the ultrasonic generator 2 and the ultrasonic generating plate. The ultrasonic generator 2 is used to generate ultrasonic waves, which are then transmitted to the ultrasonic generating plate in the cleaning tank 1 through the ultrasonic transmission cable, and the ultrasonic generating plate emits ultrasonic waves into the cleaning tank 1 to achieve ultrasonic cleaning of the disc-type membrane. The ultrasonic generator 2 can adjust power and timing.

[0020] In this embodiment, the filter 4 is a bag filter for filtering insoluble matter and impurities in water to ensure that the turbidity in water is continuously less than 1NTU. The bag filter is a high-mesh model to ensure the filtering effect.

[0021] In this embodiment, the valve may be a manual valve or a solenoid valve.

[0022] In this embodiment, the pipelines are all made of stainless steel pipelines.

[0023] In this embodiment, the liftable drain rack 6 includes a drain basket, and a pair of gears are fixedly installed on the two opposite inner side walls of the cleaning pool 1, and one gear is located at the top of the cleaning pool 1, and the other gear is located at the bottom of the cleaning pool 1. The gear located at the top of the cleaning pool 1 is fixedly connected to the output shaft of the driving motor, and the two gears located on the same side are connected by a chain transmission, and the two sides of the drain basket are respectively fixedly connected to the chains on both sides. By controlling the rotation direction of the driving motor, the movement direction of the chain can be controlled, thereby driving the drain basket to rise out of the water surface for draining or sink into the water surface for cleaning.

[0024] In this embodiment, a plurality of partitions are arranged in the drain basket, and the partitions are used to divide the drain basket into a plurality of drain slots. The arrangement of the partitions can support the disc-type membrane to prevent it from being stacked after being dumped and thus affecting the cleaning effect.

[0025] Example 2

[0026] A disc membrane off-line cleaning method specifically comprises the following steps:

[0027] S1, pour water into the cleaning pool 1, stop pouring water when the water level reaches 2 / 3 of the height of the cleaning pool 1, add corresponding chemical agents into the cleaning pool 1, and then turn on the ultrasonic generator 2 and the centrifugal pump 3 to circulate the water in the cleaning pool 1;

[0028] S2, using the heating rod 5 to heat the cleaning pool 1 to a temperature of 34-36°C;

[0029] S3, evenly placing the clogged disc-type membrane on the liftable drain rack 6 in the cleaning tank 1, and driving the liftable drain rack 6 to sink into the water, so as to clean the clogged objects on the surface of the disc-type membrane by ultrasonic vibration;

[0030] S4, after the ultrasonic vibration cleaning is completed, the liftable drain rack 6 is raised above the water surface to control the water;

[0031] S5. After the water control is completed, the cleaning of the disc membrane can be completed.

[0032] The present invention provides a disc-type membrane offline cleaning device, which can save time and labor. The device can quickly clean the disc-type membrane. By setting structures such as an ultrasonic generator plate, a heating rod, and a centrifugal pump, the cleaning action of the disc-type membrane can be completed. Compared with the traditional manual cleaning method, it greatly saves time and personnel, reduces the damage of the membrane during manual cleaning, etc. For example, through specific chemical cleaning agents and cleaning procedures, targeted cleaning can be performed for different types of pollutants to ensure significant cleaning effects.

[0033] The present invention can reduce physical damage during manual membrane washing. Traditional cleaning methods may easily cause physical damage to the membrane such as scratches and collisions due to improper cleaning or unreasonable use of tools. Ultrasonic cleaning can greatly avoid physical damage and is carefully designed to clean thoroughly during the cleaning process. The contact between water and the membrane is relatively gentle, which minimizes physical damage to the membrane, ensures the integrity of the membrane element, and prolongs its service life.

[0034] The present invention has wide applicability, and the disc membrane cleaning device can be applied to different types of disc membrane components, including membranes of different materials, specifications and filtration precisions. Whether it is used in sewage treatment, drinking water purification or industrial wastewater treatment, the device can also be used to clean various filter elements, filter cloths and other components. In addition, it can also be customized according to different application scenarios and pollution levels to meet the specific needs of users.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A disc-type membrane off-line cleaning device, characterized in that: It includes a cleaning pool, the bottom of which is provided with an ultrasonic generating plate and a heating rod, the upper part of which is provided with a liftable drain rack, the liftable drain rack is used to hold a disc-type membrane, the bottom of which is provided with a water outlet, the water outlet is connected to a centrifugal pump and a filter in sequence through pipelines, the drain outlet of the filter is connected to the upper part of the cleaning pool through a pipeline, and valves are connected on the pipelines between the centrifugal pump and the cleaning pool and on the pipelines between the centrifugal pump and the filter.

2. A disc-type membrane off-line cleaning device according to claim 1, characterized in that: An ultrasonic generator is arranged outside the cleaning pool, and an ultrasonic wave conducting cable is connected between the ultrasonic generator and the ultrasonic wave generating plate.

3. The disc-type membrane off-line cleaning device according to claim 1, characterized in that: The filter is a bag filter.

4. The disc-type membrane off-line cleaning device according to claim 1, characterized in that: The pipelines are all made of stainless steel.

5. The disc-type membrane off-line cleaning device according to claim 1, characterized in that: The liftable drain rack includes a drain basket, and a pair of gears are fixedly installed on the two opposite inner walls of the cleaning pool, and one gear is located at the top of the cleaning pool, and the other gear is located at the bottom of the cleaning pool. The gear located at the top of the cleaning pool is fixedly connected to the output shaft of the driving motor, and the two gears located on the same side are connected by a chain transmission, and the two sides of the drain basket are respectively fixedly connected to the chains on both sides.

6. A disc-type membrane off-line cleaning device according to claim 5, characterized in that: A plurality of partitions are arranged in the drain net basket, and the partitions are used to divide the drain net basket into a plurality of drain troughs.

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