Filter device for water treatment

Abstract

The present invention provides a filtering device for water treatment, the filtering device comprising: a filter front cover; a filter rear cover, a filter assembly accommodating chamber is provided between the filter front cover and the filter rear cover; the axis of the filter rear cover and the filter assembly accommodating chamber coincides with the axis of the power shaft, the filter front cover is an asymmetric structure, and the center of gravity of the filter front cover is not on the extension line of the power shaft axis. The device of the present invention adopts an asymmetric design of the main structure, with one high and one low main structure, which can offset the vibration during the filtering process and increase the service life of the structure. At the same time, the device of the present invention has made a series of improvements to the seal around the filter medium, so that the filtering efficiency of the filtering device of the present invention is improved compared with the prior art.

Description

Technical Field

[0001] The invention relates to the field of water treatment, and in particular to a filtering device for water treatment. Background Art

[0002] Water resources are irreplaceable natural resources for human beings. Water pollution has become one of the environmental issues of common concern to all countries in the world today. With the increasing severity of water pollution, my country's sewage treatment industry has made great progress. By 2006, my country's sewage treatment rate had reached 56%. From 2001 to 2007, my country's urban sewage treatment volume increased from 12 billion tons to 22.7 billion tons, with an annual compound growth rate of about 11.21%. At the same time, the urban sewage treatment rate has also increased from 36.43% to 62.8%. Despite this, there is still a large gap between China's sewage treatment industry and developed countries. Incomplete sewage treatment facilities and low sewage treatment rates are both problems currently faced by my country. In terms of sewage treatment rates, developed countries such as Europe and the United States are all above 80%, and the sewage treatment rates of the United States, the Netherlands and other countries have even exceeded 90%. According to the estimate of the Ministry of Construction, during the "Eleventh Five-Year Plan" period, my country's investment in sewage treatment will reach 300 billion yuan. According to the forecast of the Ministry of Construction, by 2010, the total amount of urban sewage discharged in my country will be 105 billion m 3 , we estimate that more than 1,000 new sewage treatment plants will be needed. The distribution of water resources in my country is very uneven, increasingly scarce, and water pollution is relatively serious. The comprehensive treatment of wastewater has become a top priority. In view of the current situation of water shortage, rapid industrial development, and environmental deterioration in my country, it is increasingly urgent to develop energy-saving, low-consumption, environmentally friendly, and comprehensive and effective utilization of resources. Recycling water, replacing new water with treated sewage, reducing the use of new water, reducing sewage treatment and discharge through filtration technology, thereby reducing pollution to the human living environment. Sewage filtration and separation technology can solve these problems well.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] The object of the present invention is to provide a filtering device for water treatment, thereby overcoming the disadvantages of the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a filter device for water treatment, characterized in that the filter device comprises: a filter front cover; a filter rear cover, a filter assembly accommodating chamber is arranged between the filter front cover and the filter rear cover; a filter medium, the filter medium is arranged in the filter assembly accommodating chamber; a filter medium clamping assembly, the filter medium clamping assembly fixes the filter medium in the filter assembly accommodating chamber; a porous plate, the porous plate is arranged on one side of the filter medium, and the porous plate is fixed in the filter assembly accommodating chamber; an impeller, the impeller is arranged in the filter rear cover; a guide plate , the guide plate is arranged in the rear cover of the filter, and the impeller is arranged between the guide plate and the filter medium; a power shaft, the power shaft passes through the impeller and the guide plate, one end of the power shaft is fixedly connected to the guide plate, and the power shaft provides power for the impeller; a material flow channel, the material flow channel is connected with the rear cover of the filter; a discharge port, the discharge port is connected with the material flow channel through a three-way valve; wherein, the axis of the rear cover of the filter and the filter assembly accommodating cavity coincides with the axis of the power shaft, and wherein, the front cover of the filter is an asymmetric structure, and the center of gravity of the front cover of the filter is not on the extension line of the axis of the power shaft.

[0006] Preferably, in the above technical solution, the filtering device comprises: a water inlet channel, which is connected to the filter front cover and has a stop valve in the water inlet channel; and a solid waste discharge valve, which is arranged on the filter front cover.

[0007] Preferably, in the above technical solution, the filter component accommodating chamber includes: an adjusting wrench, the adjusting wrench is arranged on one side of the filter component accommodating chamber, and the adjusting wrench is used to adjust the distance between the outer shells on both sides of the filter component accommodating chamber; a hinge, the hinge is arranged on the other side of the filter component accommodating chamber, and the outer shells on both sides of the filter component accommodating chamber can rotate around the hinge; a sealing ring accommodating chamber, the sealing ring accommodating chamber is arranged in the filter component accommodating chamber, the sealing ring accommodating chamber is located between the hinge and the filter medium, and a sealing ring is arranged in the sealing ring accommodating chamber.

[0008] Preferably, in the above technical solution, the filter assembly accommodating chamber comprises: a sealing strip, which is arranged around the filter medium; and a shock-absorbing ring, which is arranged between the filter medium and a side shell in the sealing ring accommodating chamber.

[0009] Preferably, in the above technical solution, the filtering device comprises: a power shaft control switch, which is arranged on the rear cover of the filter; and a cleaning material circulation valve, which is arranged at the bottom of the rear cover of the filter.

[0010] Preferably, in the above technical solution, the filtering device comprises: a cleaning material inlet, and the cleaning material inlet is connected to the material flow channel through a three-way valve.

[0011] Preferably, in the above technical solution, a polytetrafluoroethylene layer is coated on the power shaft.

[0012] Preferably, in the above technical solution, the distance between the impeller and the guide plate is 2-3 times the distance between the guide plate and the filter medium.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the prior art has proposed many types of filter devices. However, the current filter devices generally have the following design defects: 1. Symmetrical design. Traditional filter design theory believes that in order to maximize the strength of the material and avoid stress concentration, the filter body needs to be designed symmetrically as much as possible. In the process of large-flow water treatment, since the water will fill the filter cavity, the center of gravity of the filter is basically located on the central axis of the filter body. For some large filters, the center of gravity height may be as high as several meters or more. The excessively high center of gravity has brought greater safety hazards and greatly reduced the service life of the equipment. 2. Lack of design of microstructures around the filter medium. The prior art does not attach importance to the design of the peripheral structure of the filter medium, but the inventor found that a major factor currently limiting the filtration efficiency is the poor sealing conditions around the filter medium, which causes part of the sewage to bypass the filter medium and directly enter the subsequent pipeline. At least in view of the above-mentioned prior art defects, the present invention proposes a new type of filter device, the device of the present invention adopts an asymmetric design of the main structure, and the main structure is one high and one low, which can offset the vibration during the filtration process and increase the service life of the structure. At the same time, the device of the present invention has made a series of improvements to the seal around the filter medium, so that the filtration efficiency of the filter device of the present invention is improved compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0015] Figure 1 It is a schematic structural diagram of a filtering device for water treatment according to the present invention.

[0016] Figure 2 It is an enlarged structural schematic diagram of a filtering device for water treatment according to the present invention. DETAILED DESCRIPTION

[0017] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0018] Figure 1 is a schematic diagram of the structure of a filtering device for water treatment according to the present invention, Figure 2It is an enlarged structural schematic diagram of the filtering device for water treatment according to the present invention. As shown in the figure, the filtering device for water treatment according to the present invention comprises a filter front cover 1; a filter rear cover 13, a filter assembly accommodating chamber 21 is provided between the filter front cover 1 and the filter rear cover 13; a filter medium 3, the filter medium 3 is provided in the filter assembly accommodating chamber 21; a filter medium clamping assembly (not shown in the figure, the filter medium clamping assembly can be a clamp fixed on the filter assembly accommodating chamber), the filter medium clamping assembly fixes the filter medium in the filter assembly accommodating chamber; a porous plate 4, the porous plate 4 is provided on one side of the filter medium, and the porous plate 4 Fixed in the filter assembly accommodating chamber 21; impeller 6, impeller 6 is arranged in the filter rear cover 13; guide plate 8, guide plate 8 is arranged in the filter rear cover 13, and impeller 6 is arranged between guide plate 8 and filter medium 3; power shaft 14, power shaft 14 passes through impeller 6 and guide plate 8, one end of power shaft 14 is fixedly connected to guide plate 8, and power shaft provides power for impeller; material flow channel 22, material flow channel 22 is connected with the filter rear cover 13; discharge port 11, discharge port 11 is connected with material flow channel 22 through three-way valve 12; wherein, the axis of filter rear cover 13 and filter assembly accommodating chamber coincides with the axis of power shaft, and wherein, filter front cover 1 is an asymmetric structure, and the center of gravity of filter front cover is not on the extension line of the axis of power shaft. The filter device includes: a water inlet channel 19, which is connected to the filter front cover 1, and a stop valve 20 is arranged in the water inlet channel; a solid waste discharge valve, and the solid waste discharge valve 18 is arranged on the filter front cover. The filter component accommodating chamber includes: an adjustment wrench 17, which is arranged on one side of the filter component accommodating chamber, and the adjustment wrench 17 is used to adjust the distance between the two side shells of the filter component accommodating chamber; a hinge 31, which is arranged on the other side of the filter component accommodating chamber, and the two side shells of the filter component accommodating chamber can rotate around the hinge; a sealing ring accommodating chamber 5, which is arranged in the filter component accommodating chamber, and the sealing ring accommodating chamber is located between the hinge and the filter medium, and a sealing ring is arranged in the sealing ring accommodating chamber. The filter component accommodating chamber includes: a sealing strip 32, which is arranged around the filter medium; a shock absorbing ring 2, which is arranged between the filter medium and one side shell in the sealing ring accommodating chamber. The filter device includes: a power shaft control switch 7, which is arranged on the filter rear cover; a cleaning material circulation valve 16, which is arranged at the bottom of the filter rear cover. The filter device includes: a cleaning material inlet 10, which is connected to the material flow channel through a three-way valve. A polytetrafluoroethylene layer 15 is coated on the power shaft. The distance between the impeller and the guide plate is 2-3 times the distance between the guide plate and the filter medium.

[0019] Working principle: When the filter device works in the water purification mode, sewage flows in through the water inlet channel 19. With the inflow of sewage, the sewage will fill the filter front cover 1. Since the water-holding part of the filter front cover 1 is located below the filter center axis, the filter of the present invention has a low center of gravity and strong stability. With the inflow of sewage, the sewage is pushed by the water flow to flow to the filter medium. After the sewage flows through the filter medium, the sewage is filtered by the filter medium, and the solid waste residue remaining after filtering will be blocked in the front cover. The clean water after filtration flows to the three-way valve through the material flow channel, and then flows to the discharge port through the three-way valve. When the filter device works in the cleaning mode, the cleaning material flows into the material flow channel through the three-way valve. At this time, the impeller is opened. Due to the drive of the impeller, the cleaning material flows from the impeller to the filter medium, thereby achieving the cleaning of the filter medium. In the maintenance mode, the front cover can be removed, and then the adjustment wrench can be opened. Then, one side plate of the filter assembly accommodating chamber can be rotated around the hinge. After the accommodating chamber is opened, the filter medium can be replaced.

[0020] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A filtering device for water treatment, characterized in that: The filtering device comprises: filter front cover; A filter rear cover, wherein a filter assembly accommodating chamber is provided between the filter front cover and the filter rear cover; A filter medium, wherein the filter medium is disposed in the filter assembly accommodating chamber; A filter medium clamping assembly, wherein the filter medium clamping assembly fixes the filter medium in the filter assembly accommodating chamber; A porous plate, the porous plate is disposed on one side of the filter medium, and the porous plate is fixed in the filter assembly accommodating chamber; an impeller, the impeller being disposed in the filter rear cover; A guide plate, wherein the guide plate is disposed in the filter rear cover, and the impeller is disposed between the guide plate and the filter medium; A power shaft, wherein the power shaft passes through the impeller and the guide plate, one end of the power shaft is fixedly connected to the guide plate, and the power shaft provides power for the impeller; a material flow channel, the material flow channel being in communication with the filter rear cover; A discharge port, the discharge port being connected to the material flow channel via a three-way valve; A water inlet channel, the water inlet channel is communicated with the filter front cover, and a stop valve is arranged in the water inlet channel; The axis of the filter rear cover and the filter assembly accommodating chamber coincides with the axis of the power shaft, and the filter front cover is an asymmetric structure, the center of gravity of the filter front cover is not on the extension line of the axis of the power shaft, the lower part of the filter front cover is a funnel-shaped structure, the upper part of the filter front cover extends upward from the upper edge of the water inlet channel to the filter assembly accommodating chamber, and the axis of the water inlet channel is located below the axis of the power shaft; The filtering device comprises: A solid waste discharge valve is provided on the filter front cover. The filter assembly accommodating chamber comprises: An adjustment wrench, the adjustment wrench is arranged on one side of the filter assembly accommodating chamber, and the adjustment wrench is used to adjust the distance between the shells on both sides of the filter assembly accommodating chamber; A hinge, wherein the hinge is arranged on the other side of the filter assembly accommodating chamber, and the shells on both sides of the filter assembly accommodating chamber can rotate around the hinge; A sealing ring accommodating chamber, wherein the sealing ring accommodating chamber is arranged in the filter assembly accommodating chamber, the sealing ring accommodating chamber is located between the hinge and the filter medium, and a sealing ring is arranged in the sealing ring accommodating chamber. The filter assembly accommodating chamber comprises: a sealing strip disposed around the filter medium; A shock absorbing ring is arranged between the filter medium and a side shell in the sealing ring accommodating chamber. The filtering device comprises: A power shaft control switch, wherein the power shaft control switch is arranged on the filter rear cover; A cleaning material circulation valve is provided at the bottom of the filter rear cover. The filtering device comprises: a cleaning material inlet, the cleaning material inlet being connected to the material flow channel through the three-way valve, The power shaft is coated with a polytetrafluoroethylene layer.

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