Horizontal gravel net type filter

Abstract

The utility model discloses a horizontal gravel screen filter, which belongs to the technical field of filters and comprises a filter tank, two water inlets are arranged at the top of the filter tank, the top of each water inlet is fixedly connected with a water inlet pipe through a flange, and the water inlet pipes are communicated with the water inlets through three-way electromagnetic valves. The two water inlets are fixedly connected with a blow-off pipe through flanges; a filter plate is fixedly mounted on the inner side of the filter tank, an impurity storage cavity communicated with the water inlet 2 is formed in the upper part of the filter plate, a partition plate is fixedly mounted in the center of the top of the filter plate, a clear water circulation cavity is formed in the lower part of the filter plate, and a plurality of socket type filter water caps which are uniformly arranged are fixedly mounted at the top of the filter plate. According to the horizontal gravel net type filter, impurities in filtered sewage are deposited in the impurity storage cavity to form a certain pressure difference, and water enters the impurity storage cavity from the clear water circulation cavity under the action of the pressure difference and continuously washes the filter plate, the filter water cap and the sand bed, so that the cleaning effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically a horizontal sand and gravel mesh filter. Background Technology

[0002] Currently, sand and gravel filters are widely used as primary filters in agricultural micro-irrigation systems. They effectively filter out larger impurities such as silt from irrigation water. As a primary filter, they can be used in conjunction with the irrigation system to effectively prevent clogging. Sand and gravel filters are available in both manual and automatic versions.

[0003] Due to the limited area of ​​the filter, various types of impurities can clog the filtration system during operation, leading to reduced filtration capacity, increased water resistance, or even loss of filtration capacity and damage to the equipment. In such cases, the equipment must be cleaned to remove impurities and restore filtration performance. Typically, sand filters use their own water source to backwash by changing the direction of water flow. Backwashing methods are divided into manual and automatic types. Mesh filters, on the other hand, usually require manual removal of the filter screen for cleaning. This results in poor water quality, a huge workload for cleaning, and is time-consuming and labor-intensive, severely hindering the efficient operation of the irrigation system. Utility Model Content

[0004] This utility model provides a horizontal sand and gravel mesh filter, which aims to solve the problems mentioned in the background art, such as poor water quality, huge cleaning workload, and time and labor costs caused by the need for manual removal and cleaning of mesh filters, which seriously restricts the efficient operation of irrigation systems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a horizontal sand and gravel mesh filter, comprising a horizontally arranged filter tank, with two inlets at the top of the filter tank, the tops of the two inlets being fixedly connected to the same inlet pipe via flanges, the inlet pipe being connected to the two inlets via a three-way solenoid valve, and a drain pipe being fixedly connected to the same side of the two inlets via flanges; a filter plate is fixedly installed inside the filter tank, the upper part of the filter plate being an impurity retention chamber connected to the inlets, a partition plate being fixedly installed at the center of the top of the filter plate, a clear water circulation chamber at the bottom of the filter plate, a plurality of evenly arranged socket-type filter caps being fixedly installed at the top of the filter plate, an outlet being provided at the center of the bottom of the clear water circulation chamber, and a rinsing port being provided at one end of the clear water circulation chamber; a quick-opening handhole cover is provided on the side of the filter tank away from the drain pipe.

[0006] During operation, water flows downward through the pores of the sand bed for three-dimensional deep filtration, isolating impurities at the top of the sand bed. The purified water then passes through the sand bed and filter cap to the outlet, completing the filtration process. After a period of filtration, when impurities and various suspended solids accumulate to a certain amount in the filter tank and inlet pipe, the inlet flow rate decreases, reducing the filtration capacity and necessitating backwashing. As impurities in the filtered wastewater accumulate in the impurity retention chamber, a pressure difference is created. When this pressure difference reaches a certain value, the inlet pipe and outlet are shut off via a three-way solenoid valve, and the drain pipe is opened. Due to the lower pressure in the drain pipe, water flows from the clean water flow chamber into the impurity retention chamber under pressure, continuously flushing the filter plates, filter cap, and sand bed, thus achieving a cleaning effect. The flushed wastewater then flows from the inlet into the drain pipe under water pressure, completing one discharge cycle. This sand and gravel filter can be used alone, in combination, or in series with other filters, depending on the water consumption and filtration accuracy requirements. The socket-type filter cap has a simple structure, high strength, convenient installation, reliable fixing, and uniform distribution. It has the advantages of uniform water distribution, no dead corners during backwashing, high backwashing efficiency, short backwashing time, and low backwashing water consumption. The filter tank, inside and out, and the pipeline are coated with electrostatic powder coating. It is resistant to sewage corrosion and ultraviolet radiation, meets the requirements for outdoor installation, and the entire filtration system is lightweight and occupies a small area. The arrangement of filter units can be flexibly arranged according to the actual site conditions.

[0007] Preferably, the filter plate has a plurality of mounting holes that are adapted to the filter cap.

[0008] Preferably, the upper surface of the filter plate is covered with a plurality of homogeneous quartz sands of equal particle size to form a sand bed for deep filtration, wherein the particle size of the quartz sand is 0.4-1.2 mm.

[0009] Preferably, the quick-opening handhole cover includes a port integrally connected to the filter tank, a cover plate adapted to the port, lugs fixedly welded to both sides of the port, a U-shaped steel piece passing through between the two lugs, and a T-shaped screw threaded to the U-shaped steel piece and abutting against the outer surface of the cover plate.

[0010] Preferably, triangular brackets are fixedly installed at both ends of the bottom of the filter tank.

[0011] Preferably, the inner and outer sides of the filter tank, as well as the water inlet pipe and the sewage outlet pipe, are all processed using an electrostatic powder coating process.

[0012] This horizontal sand and gravel mesh filter has a simple structure and is easy to use. Depending on the water consumption and filtration accuracy requirements, it can be used alone, in combination, or in series with other filters. The socket-type filter cap has a simple structure, high strength, convenient installation, reliable fixing, and uniform distribution. It has the advantages of uniform water distribution, no dead corners during backwashing, high backwashing efficiency, short backwashing time, and low backwashing water consumption. The filter tank, inside and out, and the pipeline are coated with electrostatic powder coating. It is resistant to sewage corrosion and ultraviolet radiation, meeting the requirements for outdoor installation. Moreover, the entire filtration system is lightweight and occupies a small area, and the arrangement of filter units can be flexibly arranged according to the actual site conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first structure of a horizontal sand and gravel mesh filter;

[0014] Figure 2 This is a schematic diagram of the second structure in a horizontal sand and gravel mesh filter;

[0015] Figure 3 In a horizontal sand and gravel mesh filter Figure 2 Enlarged structural diagram at point A in the diagram;

[0016] Figure 4 This is a cross-sectional view of a horizontal sand and gravel mesh filter.

[0017] In the picture:

[0018] 1. Filter tank;

[0019] 2. Water inlet;

[0020] 3. Water inlet pipe;

[0021] 4. Three-way solenoid valve;

[0022] 5. Sewage pipe;

[0023] 6. Filter plate; 61. Mounting holes;

[0024] 7. Partition;

[0025] 8. Water filter cap;

[0026] 9. Water outlet;

[0027] 10. Rinse port;

[0028] 11. Quick-opening handhole cover; 111. Port; 112. Cover plate; 113. Ear; 114. U-shaped steel part; 115. T-shaped screw. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] This embodiment provides a horizontal sand and gravel mesh filter, such as Figures 1 to 4 As shown, the horizontal sand and gravel mesh filter includes a horizontally arranged filter tank 1. The top of the filter tank 1 is provided with two water inlets 2. The tops of the two water inlets 2 are fixedly connected to the same water inlet pipe 3 through flanges. The water inlet pipe 3 is connected to the two water inlets 2 through a three-way solenoid valve 4. The same side of the two water inlets 2 is fixedly connected to a drain pipe 5 through flanges. A filter plate 6 is fixedly installed inside the filter tank 1. The upper part of the filter plate 6 is an impurity retention chamber connected to the water inlet 2. A partition plate 7 is fixedly installed at the center of the top of the filter plate 6. The lower part of the filter plate 6 is a clear water circulation chamber. Several evenly arranged socket-type filter caps 8 are fixedly installed at the top of the filter plate 6. A water outlet 9 is provided at the center of the bottom of the clear water circulation chamber. A rinsing port 10 is provided at one end of the clear water circulation chamber. A quick-opening manhole cover 11 is provided on the side of the filter tank 1 away from the drain pipe 5.

[0031] During operation, water flows downward through the pores of the sand bed for three-dimensional deep filtration, isolating impurities at the top of the sand bed. The purified water passes through the sand bed and the filter cap 8 into the outlet 9, thus completing the filtration process. After a period of filtration, when impurities and various suspended solids in the water accumulate to a certain amount in the filter tank 1 and the inlet pipe 3, the water flow rate at the inlet 2 decreases, and the filtration capacity declines, requiring backwashing. Since impurities in the wastewater are deposited in the impurity retention chamber after filtration, a certain pressure difference is formed. When the pressure difference reaches a certain value, the inlet pipe 3 and the inlet 2 are cut off by the three-way solenoid valve 4, and the drain pipe 5 is opened. Due to the low pressure in the drain pipe 5, water will flow from the clean water transfer chamber into the impurity retention chamber under pressure, continuously flushing the filter plate 6, the filter cap 8, and the sand bed, thereby achieving a cleaning effect. The flushed wastewater enters the drain pipe 5 from the inlet 2 under water pressure, completing one discharge process. This sand and gravel filter can be used alone, in combination, or in series with other filters, depending on the water consumption and filtration accuracy requirements. The socket-type filter cap 8 has a simple structure, high strength, convenient installation, reliable fixing, and uniform distribution. It has the advantages of uniform water distribution, no dead corners during backwashing, high backwashing efficiency, short backwashing time, and low backwashing water consumption. The filter tank 1, inside and out, and the pipeline are coated with electrostatic powder coating. It is resistant to sewage corrosion and ultraviolet radiation, meets the requirements for outdoor installation, and the entire filtration system is lightweight and occupies a small area. The arrangement of filter units can be flexibly arranged according to the actual site conditions.

[0032] In one embodiment, the filter plate 6 is provided with a plurality of mounting holes 61 that are adapted to the filter cap 8.

[0033] In this embodiment, refer to Figure 4 The plug-in filter cap 8 is fixed in the mounting hole 61 and is evenly distributed. It has the advantages of uniform water distribution, no dead corners in backwashing, high backwashing efficiency, short backwashing time and low water consumption in backwashing.

[0034] In one embodiment, the upper surface of the filter plate 6 is covered with a plurality of homogeneous quartz sands of equal particle size to form a sand bed for deep filtration, wherein the particle size of the quartz sand is 0.4-1.2 mm.

[0035] In this embodiment, refer to Figure 4 Wastewater undergoes three-dimensional deep filtration through a sand bed, making it suitable for treating river water, reservoir water, canal water, lake water, or municipal circulating water containing a large amount of suspended solids, such as pipe water or ditch water with an organic matter content exceeding 10 mg / L.

[0036] In one embodiment, the quick-opening handhole cover 11 includes a port 111 integrally connected to the filter tank 1, a cover plate 112 adapted to the port, lugs 113 fixedly welded to both sides of the port 111, a U-shaped steel member 114 passing through between the two lugs 113, and a T-shaped screw 115 threadedly connected to the U-shaped steel member 114 and abutting against the outer surface of the cover plate 112.

[0037] In this embodiment, refer to Figure 2 and Figure 3 By rotating the T-shaped screw 115, the U-shaped steel part 114 provides a thread path for the T-shaped screw 115, thereby adjusting the contact force between the T-shaped screw 115 and the cover plate 112, which can quickly open or close the cover plate 112.

[0038] In one embodiment, triangular brackets are fixedly installed at both ends of the bottom of the filter tank 1.

[0039] In this embodiment, refer to Figure 1 and Figure 2 The filter tank 1 is supported by a triangular bracket, making it lightweight, easy to install, and requiring no lifting equipment.

[0040] In one embodiment, the inner and outer sides of the filter tank 1, as well as the water inlet pipe 3 and the sewage outlet pipe 5, are all processed using an electrostatic powder coating process.

[0041] In this embodiment, refer to Figure 1 and Figure 2 The inner and outer sides of the filter tank 1, as well as the water inlet pipe 3 and the sewage outlet pipe 5, are coated with electrostatic powder coating, which has the advantages of being resistant to sewage erosion and ultraviolet radiation, meeting the requirements for outdoor installation, enhancing the anti-corrosion and anti-rust performance, and extending the service life of the filter tank 1.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A horizontal sand and gravel mesh filter, comprising a horizontally arranged filter tank (1), characterized in that: The filter tank (1) has two water inlets (2) on its top. The top of the two water inlets (2) is fixedly connected to the same water inlet pipe (3) through a flange. The water inlet pipe (3) is connected to the two water inlets (2) through a three-way solenoid valve (4). The same side of the two water inlets (2) is fixedly connected to a drain pipe (5) through a flange. A filter plate (6) is fixedly installed on the inner side of the filter tank (1). The upper part of the filter plate (6) is an impurity retention chamber that communicates with the water inlet (2). A partition plate (7) is fixedly installed in the center of the top of the filter plate (6). The lower part of the filter plate (6) is a clear water circulation chamber. Several uniformly arranged socket-type filter caps (8) are fixedly installed on the top of the filter plate (6). A water outlet (9) is provided in the center of the bottom of the clear water circulation chamber. A rinsing port (10) is provided at one end of the clear water circulation chamber. The filter tank (1) is provided with a quick-opening handhole cover (11) on the side away from the drain pipe (5).

2. The horizontal sand and gravel mesh filter according to claim 1, characterized in that: The filter plate (6) is evenly provided with a number of mounting holes (61) that are compatible with the filter cap (8).

3. The horizontal sand and gravel mesh filter according to claim 1, characterized in that: The filter plate (6) has a number of homogeneous quartz sands of equal particle size laid on its upper surface to form a sand bed for deep filtration. The particle size of the quartz sand is 0.4-1.2 mm.

4. The horizontal sand and gravel mesh filter according to claim 1, characterized in that: The quick-opening handhole cover (11) includes a port (111) integrally connected to the filter tank (1), a cover plate (112) adapted to the port, lugs (113) fixedly welded to both sides of the port (111), a U-shaped steel piece (114) passing through between the two lugs (113), and a T-shaped screw (115) threaded to the U-shaped steel piece (114) and abutting against the outer surface of the cover plate (112).

5. The horizontal sand and gravel mesh filter according to claim 1, characterized in that: Triangular brackets are fixedly installed at both ends of the bottom of the filter tank (1).

6. The horizontal sand and gravel mesh filter according to claim 1, characterized in that: The filter tank (1) is made of electrostatic powder coating on both sides, as well as the water inlet pipe (3) and the sewage outlet pipe (5).

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