Automatic backwashing liquid filtering device

Abstract

The utility model relates to the technical field of liquid filtering, in particular to an automatic backwashing liquid filtering device which comprises a shell and further comprises a filtering assembly, the filtering assembly comprises an upper base, a mounting frame, a filtering piece, a water outlet pipe, a water inlet pipeline, a clean water pipeline and a waste water pipeline, the upper base is fixedly connected with the shell, the mounting frame is fixedly connected with the upper base, and the filtering piece is fixedly connected with the mounting frame. The filter part is fixedly connected with the mounting frame, the water inlet pipeline is arranged on the shell, the purified water pipeline is arranged on the upper base, the wastewater pipeline is arranged on the shell, the water level of the purified water is rapidly lowered under the action of the gravity of the purified water in the upper base and the dual force of compressed air, and the purified water flows into the filter part through the water outlet pipe and reversely flushes the filter part; therefore, the purpose of backwashing the filtering piece can be achieved, and the filtering piece is prevented from being blocked after being used for a long time.

Description

An automatic backwashing liquid filtration device Technical Field

[0001] This utility model relates to the field of liquid filtration technology, and in particular to an automatic backwashing liquid filtration device. Background Technology

[0002] Traditional water filter pre-filters are typically made with stainless steel woven mesh. Most pre-filters on the market have a filtration accuracy of 40μm, with a very small number claiming to reach 20μm. Current filtration technology uses a single layer of stainless steel mesh covered by an injection-molded cylindrical support. However, this lack of a complete seal allows tap water to seep in from both ends when water pressure reaches a certain level, affecting or even eliminating the filtration effect.

[0003] In existing technologies, sintered stainless steel mesh (multi-layer stainless steel mesh high-temperature sintering combination) is used to replace woven mesh, which facilitates sealing and expands the filtration accuracy range from 40-20μm to 40-0.5μm or even higher to meet market needs and water quality in different regions, and also has a longer service life.

[0004] However, after prolonged use, existing filtration devices accumulate a large amount of impurities in the filtered water onto the filter elements. Since existing filtration devices cannot be backwashed to clean the filter elements, the accumulated impurities will clog the filter elements after long-term use. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic backwashing liquid filtration device, which aims to solve the problem that after prolonged use, impurities accumulate on the filter elements of existing filtration devices, which cannot perform backwashing to clean the filter elements, thus causing blockage of the filter elements due to the accumulated impurities.

[0006] To achieve the above objectives, this utility model provides an automatic backwashing liquid filtration device, including a housing,

[0007] It also includes a filter component.

[0008] The filter assembly includes an upper base, a mounting bracket, a filter element, a water outlet pipe, a purified water pipe, and a wastewater pipe. The upper base is fixedly connected to the outer shell and is located on one side of the outer shell. The mounting bracket is fixedly connected to the upper base and is located on one side of the upper base. The filter element is fixedly connected to the mounting bracket and is located on the side of the mounting bracket closer to the outer shell. The water inlet pipe is disposed on the outer shell. The purified water pipe is disposed on the upper base. The wastewater pipe is disposed on the outer shell.

[0009] The water purification pipe includes a water purification pipe body and a first valve. The water purification pipe body is connected to the upper base and is located on one side of the upper base. The first valve is disposed on the water purification pipe body.

[0010] The wastewater pipeline includes a wastewater pipe body and a second valve. The wastewater pipe body is connected to the outer casing and is located on one side of the outer casing. The second valve is disposed on the wastewater pipe body.

[0011] The upper base has a pressure chamber located on one side of the upper base.

[0012] The filter assembly further includes a transparent window, which is fixedly connected to the housing and located on one side of the housing.

[0013] This utility model discloses an automatic backwashing liquid filtration device. When the filter element needs to be backwashed, the outlet of the wastewater pipe is opened. Due to the combined force of gravity of the clean water in the upper base and the compressed air, the clean water level drops rapidly. The clean water flows into the filter element through the outlet pipe and backwashes the filter element, thereby achieving the purpose of backwashing the filter element and preventing the filter element from becoming clogged due to prolonged use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 is a structural schematic diagram of the automatic backwashing liquid filtration device according to the first embodiment of the present invention.

[0016] Figure 2 is a schematic diagram of the structure of the filter assembly of the first embodiment of the present invention.

[0017] In the diagram: 101-outer shell, 102-upper base, 103-mounting bracket, 104-filter element, 105-outlet pipe, 106-inlet pipe, 107-transparent window, 108-clean water pipe body, 109-first valve, 110-wastewater pipe body, 111-second valve, 112-pressure chamber. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] The first embodiment of this application is:

[0020] Please refer to Figures 1 and 2, where Figure 1 is a structural schematic diagram of the automatic backwashing liquid filtration device according to the first embodiment of the present invention, and Figure 2 is a structural schematic diagram of the filtration assembly according to the first embodiment of the present invention.

[0021] This utility model provides an automatic backwashing liquid filtration device, including a housing 101 and a filter assembly. The filter assembly includes an upper base 102, a mounting bracket 103, a filter element 104, a water outlet pipe 105, a water inlet pipe 106, a clean water pipe, a wastewater pipe, and a transparent window 107. The clean water pipe includes a clean water pipe body 108 and a first valve 109, and the wastewater pipe includes a wastewater pipe body 110 and a second valve 111. The upper base 102 has a pressure chamber 112. This solution addresses the problem that in existing filtration devices, after prolonged use, impurities accumulate on the filter element, and these devices cannot perform backwashing to clean the filter element. Consequently, the accumulated impurities clog the filter element after prolonged use. This solution can be used in situations where backwashing is required to clean the filter element.

[0022] In this embodiment, tap water can be introduced into the outer casing 101 and filtered and purified through the filter element 104 inside the outer casing 101.

[0023] The upper base 102 is fixedly connected to the outer shell 101 and located on one side of the outer shell 101. The mounting bracket 103 is fixedly connected to the upper base 102 and located on one side of the upper base 102. The filter element 104 is fixedly connected to the mounting bracket 103 and located on the side of the mounting bracket 103 closer to the outer shell 101. The water inlet pipe 106 is disposed on the outer shell 101. The purified water pipe is disposed on the upper base 102. The wastewater pipe is disposed on the outer shell 101. The upper base 102 is welded to the outer shell 101. On the shell 101, the upper base 102 has a pipeline inside. The mounting bracket 103 is welded to the upper base 102. The mounting bracket 103 is made of stainless steel. The filter element 104 is welded to the mounting bracket 103. The mounting bracket 103 can connect and fix the filter element 104 to the upper base 102. The filter element 104 is a whole stainless steel sintered mesh. It is welded to the stainless steel plate of the mounting bracket 103 to achieve a completely sealed state. The water outlet pipe 105 is welded to the mounting bracket 103 and communicates with the filter element 104's filter inner cavity. The filtered water in the filter element 104 flows into the upper base 102 through the outlet pipe 105. The inlet pipe 106 is installed on the outer shell 101, allowing tap water to be introduced into the outer shell 101. The purified water pipe is installed on the upper base 102, allowing purified water introduced into the upper base 102 to be discharged. The wastewater pipe is installed on the outer shell 101, allowing wastewater to be discharged from the outer shell 101 after backwashing. The entire device... The device consists of two parts: the outer casing 101 and the upper base 102. Tap water first flows into the outer casing 101 through the inlet of the inlet pipe 106, then passes through the filter element 104, and finally flows out through the purified water outlet of the purified water pipe. The purified water outlet of the purified water pipe is located on the upper part of the upper base 102, but not at the very top. When the device is working normally, after the outer casing 101 is filled with tap water, it passes through the filter element 104, and the filtered water flows into the upper base 102 through the outlet pipe 105. At this time, the water level at the top rises. When purified water is needed, the purified water pipe is opened to obtain it. The basic water level at the top of the device will fluctuate slightly due to changes in water pressure. If the water pressure is low, the purified water level may be lower than the outlet of the purified water pipe.When the outlet of the purified water pipe is opened, the water level will quickly rise to the same height as or slightly above the outlet of the purified water pipe, allowing purified water to flow out of the purified water pipe normally for use. Under no circumstances will the purified water level in the upper base 102 reach the top of the upper base 102, leaving compressed air between the water level and the top of the upper base 102. This allows the outlet of the wastewater pipe to be opened when the filter element 104 needs to be backwashed. Due to the combined force of gravity of the purified water in the upper base 102 and the compressed air, the purified water level drops rapidly. The purified water flows into the filter element 104 through the outlet pipe 105 and backwashes the filter element 104, thereby achieving the purpose of backwashing the filter element 104 and preventing the filter element 104 from becoming clogged due to prolonged use.

[0024] Secondly, the water purification pipe body 108 is connected to the upper base 102 and is located on one side of the upper base 102; the first valve 109 is disposed on the water purification pipe body 108, the water purification pipe body 108 is welded to the upper outer side of the upper base 102, but not disposed at the top of the upper base 102, and communicates with the upper base 102, so that the purified water filtered by the filter element 104 can flow out through the water purification pipe body 108, and the first valve 109 is disposed on the water purification pipe body 108, so that the flow of fluid in the water purification pipe body 108 can be controlled through the first valve 109.

[0025] Meanwhile, the wastewater pipe body 110 is connected to the outer casing 101 and is located on one side of the outer casing 101; the second valve 111 is provided on the wastewater pipe body 110, the wastewater pipe body 110 is welded to the lower part of the outer casing 101 and communicates with the outer casing 101, and the wastewater generated after backwashing can flow out through the wastewater pipe body 110. The second valve 111 is provided on the wastewater pipe body 110, and the flow of fluid in the wastewater pipe body 110 can be controlled by the second valve 111.

[0026] In addition, the pressure chamber 112 is located on one side of the upper base 102, and the pressure chamber 112 is located on the upper inner side of the upper base 102. Under any circumstances, the water level in the upper base 102 will not reach the pressure chamber 112 of the upper base 102, so that compressed air is left between the water level and the top of the upper base 102 and is in the pressure chamber 112. Air is pressurized. When the water pressure is low, the air occupies a larger space; when the water pressure is high, the water pressure will compress the air into a smaller space.

[0027] Finally, the transparent window 107 is fixedly connected to the housing 101 and located on one side of the housing 101. The transparent window 107 is adhered to the housing 101. Through the transparent window 107, users can easily observe the usage of the filter 104 inside the housing 101.

[0028] When using the automatic backwashing liquid filtration device of this embodiment, when it is necessary to backwash the filter element 104, the outlet of the wastewater pipe is opened. Due to the combined force of gravity of the clean water in the upper base 102 and the compressed air, the clean water level drops rapidly. The clean water flows into the filter element 104 through the outlet pipe 105 and backwashes the filter element 104, thereby achieving the purpose of backwashing the filter element 104 and avoiding clogging of the filter element 104 due to long-term use.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An automatic backwashing liquid filtration device, comprising a housing, characterized in that, It also includes a filter assembly, which includes an upper base, a mounting bracket, a filter element, a water outlet pipe, a water inlet pipe, a purified water pipe, and a wastewater pipe. The upper base is fixedly connected to the outer shell and is located on one side of the outer shell. The mounting bracket is fixedly connected to the upper base and is located on one side of the upper base. The filter element is fixedly connected to the mounting bracket and is located on the side of the mounting bracket closer to the outer shell. The water inlet pipe is disposed on the outer shell. The purified water pipe is disposed on the upper base. The wastewater pipe is disposed on the outer shell.

2. The automatic backwashing liquid filtration device as described in claim 1, characterized in that, The water purification pipe includes a water purification pipe body and a first valve. The water purification pipe body is connected to the upper base and is located on one side of the upper base. The first valve is disposed on the water purification pipe body.

3. The automatic backwashing liquid filtration device as described in claim 1, characterized in that, The wastewater pipeline includes a wastewater pipe body and a second valve. The wastewater pipe body is connected to the outer casing and is located on one side of the outer casing. The second valve is disposed on the wastewater pipe body.

4. The automatic backwashing liquid filtration device as described in claim 1, characterized in that, The upper base has a pressure chamber located on one side of the upper base.

5. The automatic backwashing liquid filtration device as described in claim 1, characterized in that, The filter assembly also includes a transparent window, which is fixedly connected to the housing and located on one side of the housing.

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