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Prefilter

A pre-filter and filter screen technology, which is applied to fixed filter element filters, filtration and separation, chemical instruments and methods, etc., can solve the problem of difficult to rinse off large particles of dirt, and achieve long-term and effective work protection and improvement. Long service life, good filtration and backwash effect

Pending Publication Date: 2020-07-28
RIFENG ENTERPRISE FOSHAN CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pre-filter, which can solve the problem of large particles of dirt attached to residues that are difficult to clean with only a simple sewage discharge operation, and is convenient and quick to operate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as Figure 1 to Figure 29 As shown, a pre-filter according to a preferred embodiment of the present invention includes a valve body 1 , a casing 11 , a valve core assembly 8 and a drain valve 2 .

[0073] The valve body 1 is installed on the top of the housing 11 , and the valve core assembly 8 and the drain valve 2 are installed in the housing 11 sequentially from top to bottom. One end of the valve body 1 is provided with a water inlet 1a, and the other end of the valve body 1 is provided with a water outlet 1b, that is, the water inlet 1a and the water outlet 1b are arranged opposite to each other and located on the same horizontal line. In other embodiments, the water inlet and outlet 1a and the water outlet 1b may not be on the same horizontal line, or the water inlet and outlet 1a may be inclined, but it is not limited to this example. The ends of the water inlet end 1a and the water outlet end 1b may be provided with mounting positions for connecting pipes....

Embodiment 2

[0102] see Figure 30 and Figure 31 , the difference between the present embodiment and the first embodiment is: the pre-filter in the second embodiment includes a controller 33 and a power supply 34, the controller 33 and the power supply 34 are installed outside the housing 11, the power supply 34 and the controller 33 Electrically connected, the controller 33 is electrically connected to the blowdown valve 2 . Power supply 34 can be lithium battery or other batteries, provides energy for controller 33, and controller 33 can be PLC controller 33, and controller 33 controls blowdown valve 2 to close, does not need to adopt manual switch blowdown valve 2 again, realizes automatic opening or Close drain valve 2.

[0103] Such as Figure 30As shown, the pre-filter may be a universal pre-filter. A universal conversion joint 39 is installed on the valve body 1, which is convenient for the staff to install the pre-filter in the pipeline with complicated positions.

[0104] Ex...

Embodiment 3

[0106] see Figure 32 The difference between the pre-filter in the third embodiment and the second embodiment is that the power supply is powered by an external power supply, and the lower casing 112 protrudes from an AC plug 32 for electrical connection with the external power supply, and the controller 33 is integrated in the lower casing 112. Inside the casing 112, the installation space of the pre-filter is saved.

[0107] Except for the above differences, other structures of this embodiment are consistent with those in Embodiment 1 and Embodiment 2, and the corresponding effects and principles are also the same, which will not be repeated here.

[0108] Working process of the present invention is as follows:

[0109] In the filtering state, the raw water enters the filter cavity 1c through the water inlet 1a of the valve body 1, and then flows into the water passage arranged obliquely above the impeller 82 along the water inlet 61 in the inner skeleton 81. The driven im...

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PUM

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Abstract

The invention relates to the technical field of filters, and discloses a pre-filter. The pre-filter comprises a valve body, a shell, a valve core assembly and a blow-down valve, wherein the valve bodyis installed at the top end of the shell; the valve core assembly and the blow-down valve are both installed in the shell; the valve body is provided with a water inlet end, a water outlet end and afilter cavity communicated with the water inlet end and the water outlet end; the top side of the inner wall of the filter cavity extends downwards to form a baffle; and the valve core assembly comprises an inner framework, an impeller, a lower filter screen, a spray gun, a piston body and an elastic piece. When the pre-filter provided by the invention is used, the problem that large-particle dirt-attached residues are difficult to wash away can be solved only through simple pollution discharge operation, and the pre-filter is convenient and rapid to operate.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a pre-filter. Background technique [0002] The pre-filter is the first coarse filtration device for the water in the whole house. It can filter the sediment, rust, algae and other large particles of impurities in the tap water. It is generally installed behind the water meter in the water inlet pipe. [0003] At present, most of the backwash pre-filters on the market will have dirt accumulation and clogged gaps after being used for a period of time. This is because: the backwash filter is installed inside the upper end of the filter element. When the raw water is used, the impurities in the raw water first enter the filter element along with the raw water, and then flow into the filter screen. Moreover, the backwashing decontamination effect of the existing pre-filter is not good, and the inner bottom of the pre-filter often accumulates dirt, which is easy to block the filter s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/11B01D29/58B01D29/60B01D29/64B01D29/68B01D29/90B01D35/143B01D35/30
CPCB01D29/114B01D29/58B01D29/686B01D29/6476B01D29/90B01D29/606B01D35/30B01D35/143
Inventor 苏杰林细勇秦燕芝蒋玉林赖化明谢承志
Owner RIFENG ENTERPRISE FOSHAN CO LTD