Pre-filter capable of automatically discharging sewage

Abstract

The utility model discloses an automatic pollution discharge prefilter which comprises control valves, the control valves comprise a first control valve, a second control valve and a third control valve, one end of each control valve is connected with a water inlet, the other end of each control valve is connected with a water outlet, and the lower portion of each control valve is further connected with a filtering device. A drain outlet is formed in the bottom of the filtering device; the fine metal filter screen is arranged in the filter, so that large-particle impurities such as silt, rust and suspended solids in water can be effectively intercepted; and then, by utilizing a siphon principle, when a certain pressure difference or a set time point is reached, the water flow backflushes the filter screen, and impurities attached to the filter screen are discharged.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage pump's technical field, in particular to a kind of automatic pollution discharge prefilter. BACKGROUND

[0002] With the acceleration of industrialization and urbanization, water sources are threatened by various pollutants, such as silt, rust, suspended solids, algae, microorganisms, etc. These impurities not only affect the taste and hygiene of the water, but also can cause damage to water-using equipment in the home, such as water heaters, washing machines, faucets, etc.

[0003] Modern households have increasingly high requirements for water quality for various water-using equipment. The presence of impurities can cause pipe blockage, equipment wear, reduced heat exchange efficiency, and other problems, shortening the service life of the equipment and increasing maintenance costs.

[0004] Moreover, the water supply system in some areas is old or not well maintained, resulting in secondary pollution of the water during transportation, which requires further filtration before entering the home. SUMMARY

[0005] To address the shortcomings of the prior art, the utility model aims to provide an automatic pollution discharge prefilter that includes a built-in water pump, an intelligent panel display, simple production and manufacturing, easy disassembly and assembly, and an intelligent cooling device that can use different brands of coolant to cool the temperature of the sewage pump motor. This design meets the needs of different working conditions and different brands of coolant, improving the use of sewage pumps and market competitiveness.

[0006] The utility model achieves the following technical solutions:

[0007] An automatic pollution discharge prefilter includes:

[0008] A control valve, which includes a first control valve, a second control valve, and a third control valve. One end of the control valve is connected to the water inlet, the other end is connected to the water outlet, and the lower part of the control valve is connected to the filter device. The bottom of the filter device is provided with a pollution discharge port.

[0009] Further, the control valve is also connected to a pressure gauge.

[0010] Further, the filter device includes a stainless steel filter screen, a first sewage interception layer, a second sewage interception layer, a third sewage interception layer, and a hollow layer connected in order from the outside to the inside.

[0011] Further, the pollution discharge port is provided with a pollution discharge valve on the surface.

[0012] Further, the filter device is provided with a filter core fixing frame on the surface.

[0013] Further, the filtering precision of the filtering device is 40-100 microns.

[0014] Further, the rated working flow of the control valve is 3-5 m 3 / h.

[0015] Further, the rated working pressure of the automatic pollution discharge pre-filter is 0.1-1.6 MPa.

[0016] Compared with the prior art, the automatic pollution discharge pre-filter has the following beneficial effects:

[0017] The automatic pollution discharge pre-filter can effectively intercept large-particle impurities, protect the rear-end water-involved equipment such as a water heater, a washing machine, a water purifier and the like, and prolong the service life of the equipment; the automatic pollution discharge pre-filter can automatically perform backwashing and pollution discharge according to the setting without frequent manual disassembly and cleaning, is convenient to use, saves manpower, is durable and reliable, is made of a solid material such as stainless steel, has good corrosion resistance and pressure resistance, has a long service life, has low maintenance cost, and is convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a structural schematic view of an automatic pollution discharge pre-filter according to the present application;

[0019] Figure 2 Fig. 2 is a structural schematic view of a filtering device according to the present application;

[0020] Figure 3 Fig. 3 is an installation schematic view of the filtering device according to the present application.

[0021] In the drawing, the water inlet is 1, the water outlet is 2, the pressure gauge is 3, the first control valve is 4, the second control valve is 5, the third control valve is 6, the filtering device is 7, the pollution discharge valve is 8, the stainless steel filter screen is A, the first pollution interception layer is B, the second pollution interception layer is C, the third pollution interception layer is D, the hollow layer is E, and the water flow direction is F. DETAILED DESCRIPTION

[0022] In the following, the present application is described in priority with reference to the drawings and the specific embodiments, and it should be noted that, under the premise of no conflict, the embodiments described below or the technical features can be combined to form new embodiments.

[0023] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it needs to be understood that the terms "installation", "connection" and "connection" should be understood broadly unless otherwise specified and limited, for example, fixed connection, detachable connection or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium, or communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figure 1 An automatic pollution discharge pre-filter, comprising:

[0027] A control valve, wherein the control valve comprises a first control valve 4, a second control valve 5 and a third control valve 6, one end of the control valve is connected with the water inlet 1, the other end of the control valve is connected with the water outlet 2, and the control valve is further connected with a filtering device 7 below, and a pollution discharge port is arranged at the bottom of the filtering device.

[0028] Further, the control valve is further connected with a pressure gauge 3.

[0029] Further, please refer to Figure 2 The filtering device 7 comprises, from outside to inside, a stainless steel filter screen A, a first pollution interception layer B, a second pollution interception layer C, a third pollution interception layer D and a hollow layer E.

[0030] Wherein A represents a stainless steel filter screen, B represents a first pollution interception layer, C represents a second pollution interception, D represents a third pollution interception layer, E represents a hollow layer, and F represents a water flow direction.

[0031] Further, the pollution discharge port is provided with a pollution discharge valve 8.

[0032] Further, the filtering device 7 is provided with a filter core fixing frame on the surface.

[0033] Further, the filtering precision of the filtering device 7 is 40-100 microns.

[0034] Further, the rated working flow of the control valve is 3-5m 3 / h.

[0035] Further, the rated working pressure of the automatic pollution discharge pre-filter is 0.1-1.6MPa.

[0036] The working principle of the utility model is as follows: Figure 3 As shown in the figure, the automatic pollution discharge pre-filter of the utility model is installed, the water inlet 2 is connected with the water inlet pipeline of tap water through a valve, the first control valve 4 and the third control valve 6 are opened, water flows into the hollow layer E of the filter core from the water inlet of the equipment, and then sequentially passes through the three layers of pollution interception layers (the first pollution interception layer B, the second pollution interception layer C and the third pollution interception layer D) for filtration and treatment, and then flows out from the water outlet.

[0037] Backwashing: when a certain pressure difference or a set time point is reached, the first control valve 4 and the third control valve 6 are automatically closed, the second control valve 5 is automatically opened, and the pollution discharge valve 8 of the pollution discharge port is simultaneously opened, water flows into the hollow layer E of the equipment from the water outlet of the equipment, and then sequentially passes through the three layers of pollution interception layers (the third pollution interception layer D, the second pollution interception layer C and the first pollution interception layer B), the water flow impacts and shakes off the particulate impurities attached to the pollution interception layers, and then flows out from the pollution discharge port.

[0038] The application scope of the utility model includes:

[0039] Home water: washing machines, water heaters, water purifiers and the like provide preliminary filtration protection;

[0040] Apartment and residential area: the automatic pollution discharge pre-filter can be installed at the water inlet main pipe of the whole building / residential area to purify the water used in the whole area;

[0041] Commercial place: restaurants, hotels, office buildings and the like, and the automatic pollution discharge pre-filter protects the commercial water equipment;

[0042] Rural self-built house

[0043] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the scope of protection of the utility model, and any non-substantial changes and replacements made by those skilled in the art on the basis of the utility model all belong to the scope of protection of the utility model.

Claims

1. An automatic blowdown prefilter, characterized by, The utility model relates to a kind of automatic sewage prefilter, including: Control valve, wherein the control valve includes first control valve (4), second control valve (5) and third control valve (6), control valve one end is connected with water inlet (1), control valve other end is connected with water outlet (2), control valve lower side is also connected with filter device (7), and filter device bottom is provided with sewage outlet.

2. A prefilter for automatic pollution discharge according to claim 1, characterized in that: The control valve is also connected with a pressure gauge (3).

3. The automatic pollution discharge pre-filter according to claim 1, wherein: The filter device (7) includes stainless steel filter screen (A), first sewage interception layer (B), second sewage interception layer (C), third sewage interception layer (D) and hollow layer (E) connected in turn from outside to inside.

4. The automatic pollution discharge pre-filter according to claim 1, wherein: The surface of the sewage outlet is provided with a sewage valve (8).

5. The automatic pollution discharge pre-filter according to claim 1, wherein: The surface of the filter device (7) is provided with a filter element fixing frame.

6. The automatic pollution discharge pre-filter according to claim 1, wherein: The filtration accuracy of the filter device (7) is 40-100 microns.

7. The automatic pollution discharge pre-filter according to claim 3, wherein: The control valve has a rated working flow of 3-5 m 3 / h.

8. The automatic pollution discharge pre-filter according to claim 1, wherein: The rated working pressure of the automatic sewage prefilter is 0.1-1.6 MPa.

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