CN205073736U - Filter backwash enhancement device - Google Patents

Abstract

The utility model discloses a filter backwash strengthening device, which comprises a water inlet pipe and a sewage discharge pipe connected with the water inlet of the filter, the water inlet pipe is provided with a first valve, and the sewage discharge pipe is provided with a second valve. Valve, the water outlet of the filter communicates with the water inlet and water outlet of the water storage tank respectively through the water outlet pipe and the backwash pipe, the third valve is arranged on the water outlet pipe, and the fourth valve is arranged on the backwash pipe. valves and backwash booster pumps. The utility model has the advantages of simple structure, convenient use, enhanced backwashing effect, improved filtering efficiency of the filter, flexible type selection according to site conditions, strong applicability and wide application range.

Description

Filter backwash enhancement device

technical field

The utility model relates to a backwashing device, in particular to a backwashing strengthening device used for a multi-media water filter with backwashing self-cleaning function.

Background technique

With the rapid development of the metallurgical and chemical industries, the requirements for water quality in each production process are getting higher and higher. Multi-media water filters with backwashing and self-cleaning functions are widely used in the cooling water systems of various production plants and mines, and some are used as pretreatment The device purifies the replenishment water of the circulating water system and intercepts impurities; there is also a part as a side filter system to reduce the impurity content of the system circulating water. Usually, after the source water enters the multi-media water filter, the mechanical impurities, mud and large solid particles in the water are intercepted by the filter material, and the quality of the effluent water is improved. However, as the working time increases, a large amount of mechanical impurities, mud and solid particles accumulate in the filter. On the surface of the filter material layer of the filter, the filtration pressure loss of the filter increases, so the filtration efficiency will be greatly reduced. For this reason, it is necessary to backwash the filter regularly to improve the working efficiency of the filter.

Usually limited by the design of the filter process, two problems are often encountered in the backwashing process of the multi-media water filter: on the one hand, the water filter used for the side filter system needs to build a separate filter pool and use it for filter backwashing, otherwise the backwashing The washing water source can only come from the circulating water of the system, so the backwashing water quality cannot be guaranteed, which affects the backwashing effect; When the process encounters water pressure fluctuations or the source water pressure is too low, the backwashing effect will not be guaranteed. Long-term operation will easily lead to hardening of the filter material, which will cause irreversible damage to the filter and affect the filtration. filter efficiency and service life.

Utility model content

The purpose of this utility model is to provide a filter backwash enhancement device, which has a simple structure, is easy to use, enhances the backwash effect, and improves the filtration efficiency of the filter. At the same time, it can be flexibly selected according to site conditions and has strong applicability Wide range of applications.

In order to achieve the above object, the utility model provides a filter backwash enhancement device, which includes a water inlet pipe and a sewage pipe connected to the water inlet of the filter, the water inlet pipe is provided with a first valve, and the sewage pipe is provided with A second valve is provided, and the water outlet of the filter communicates with the water inlet and the water outlet of the water storage tank respectively through the water outlet pipe and the backwash pipe, the third valve is arranged on the water outlet pipe, and the backwash pipe Equipped with a fourth valve and a backwash booster pump.

Further, a check valve is provided on the backwash pipe.

Further, a liquid level gauge is provided on the water storage tank.

Further, the water inlet of the filter communicates with the water inlet pipe and the sewage pipe through the first three-way valve, and the water outlet of the filter communicates with the water outlet pipe and the backwash pipe through the second three-way valve.

Further, the first valve, the second valve, the third valve and the fourth valve are all solenoid valves.

After adopting the above scheme, the utility model has the following beneficial effects:

1. Through the above structural design, the filter backwash water pressure and backwash water quality are guaranteed, the filter backwash effect is enhanced, and the filter backwash frequency is reduced;

2. It avoids the hardening of the filter material caused by incomplete backwashing, and prolongs the service life of the filter material;

3. The device has a simple structure and is easy to operate. It is involved in the filter backwashing control program. It has a high degree of automation and low post-operation and maintenance costs;

4. Improve the filtration efficiency of the filter;

5. The device can be supplied with the filter as a complete set or used for renovation of existing filter equipment. It has a wide range of applications. The water storage tank and backwash booster pump of the device can be adjusted according to the field use environment and the technical requirements of the filter. Flexible selection and strong applicability.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of a filter backwash enhancing device of the present invention.

detailed description

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1, the utility model filter backwash enhancement device includes a multi-media water filter 1, and the water inlet of the filter 1 communicates with the water inlet pipe 3 and the sewage pipe 4 through the first three-way valve 2, wherein the filter The water inlet of 1, one end of the water inlet pipe 3 and one end of the sewage pipe 4 are respectively connected to the three connection ports of the first three-way valve 2, and the connection method here can be screw connection, etc., which is not limited here. The water inlet pipe 3 is provided with a first valve 5, and the sewage pipe 4 is provided with a second valve 6, where both the first valve 5 and the second valve 6 can be electromagnetic valves. The water outlet of the filter 1 communicates with the water inlet and the water outlet of the water storage tank 9 respectively through the water outlet pipe 7 and the backwash pipe 8, wherein the water outlet of the filter 1 is connected to one end of the water outlet pipe 7 through the second three-way valve 10, One end of the backwash pipe 8 is connected. The outlet pipe 7 is provided with a third valve 11, and the backwash pipe 8 is sequentially provided with a fourth valve 12, a check valve 13 and a backwash booster pump 14 from left to right. The check valve 13 is provided to prevent water Backflow, wherein both the third valve 11 and the fourth valve 12 are electromagnetic valves. The water storage tank 9 is provided with a liquid level gauge 15, and the liquid level gauge 15 is used to reflect the liquid level in the water storage tank 9 in real time.

During normal operation, the first valve 5 and the third valve 11 are fully open, the source water enters the filter 1 through the water inlet pipe 3 through the first valve 5, and the filtered water filtered by the filter 1 passes through the third valve 11, Part of the filtered water enters the next process through the outlet pipe 7, and the other part of the filtered water enters the water storage tank 9 as supplementary water for backwashing the filter 1; when the filter 1 needs to be backwashed, the first valve 5 and the third valve 11 are in the fully closed state, the second valve 6 and the fourth valve 12 are in the fully open state, the filtered water in the liquid storage tank 9 is pressurized by the backwash booster pump 14, and the water from the liquid storage tank 9 Flow out, flow into the filter 1 through the backwash pipe 8 and the fourth valve 12, clean the impurities accumulated in the filter material in the filter 1, and then discharge through the second valve 6 through the sewage pipe 4, so as to achieve the purpose of cleaning the filter material , in the backwashing process, because in the whole system, except the filter that needs to be backwashed, all the other filters are still working, so the water storage tank 9 ensures that the backwashing program is implemented smoothly after constantly supplementing filtered water.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the utility model, which follow the general principles of the utility model and include undisclosed common knowledge or conventional technical means in the technical field . The specification and examples are to be considered exemplary only, with a true scope and spirit of the invention indicated by the following claims.

It should be understood that the present invention is not limited to the precise structure which has been described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (5)

1. A filter backwash strengthening device is characterized in that, comprising a water inlet pipe and a sewage pipe communicated with the water inlet of the filter, the water inlet pipe is provided with a first valve, and the sewage pipe is provided with a second valve. Valve, the water outlet of the filter communicates with the water inlet and the water outlet of the water storage tank respectively through the water outlet pipe and the backwash pipe, the third valve is arranged on the water outlet pipe, and the fourth valve is arranged on the backwash pipe. valves and backwash booster pumps. 2. The filter backwash enhancement device according to claim 1, wherein a check valve is provided on the backwash pipe. 3. The filter backwash enhancement device according to claim 2, characterized in that a liquid level gauge is provided on the water storage tank. 4. The filter backwash enhancement device according to claim 3, wherein the water inlet of the filter communicates with the water inlet pipe and the sewage pipe through the first three-way valve, and the water outlet of the filter passes through the first three-way valve. The two and three way valves are communicated with the water outlet pipe and the backwash pipe. 5. The filter backwash enhancement device according to claim 4, characterized in that, the first valve, the second valve, the third valve and the fourth valve are all electromagnetic valves.