阅读说明：本技术 多泥砂水源微灌用连续自动反冲洗网式过滤器 (Continuous automatic back-flushing net type filter for multi-sand water source micro-irrigation ) 是由 毛跃进 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种多泥砂水源微灌用连续自动反冲洗网式过滤器,包括圆柱形外壳,外壳上设置有若干过滤孔,外壳的内部设置有圆柱形过滤网,过滤网的内部设置有清洗机构,外壳的顶部与水泵吸水管连通,吸水管后自靠近外壳端开始依次连接有自吸离心泵、调节阀,吸水管后且位于自吸离心泵、调节阀之间与高压水管的一端连通,高压水管的另一端与清洗机构连通。本发明过滤器解决了现有过滤器过滤效果差且易发生堵塞的问题。(The invention discloses a continuous automatic back-flushing net type filter for multi-sand water source micro-irrigation, which comprises a cylindrical shell, wherein a plurality of filter holes are formed in the shell, a cylindrical filter screen is arranged in the shell, a cleaning mechanism is arranged in the filter screen, the top of the shell is communicated with a water suction pipe of a water pump, a self-priming centrifugal pump and an adjusting valve are sequentially connected to the back of the water suction pipe from the end close to the shell, the back of the water suction pipe is positioned between the self-priming centrifugal pump and the adjusting valve and is communicated with one end of a high-pressure water pipe, and the other end of the high. The filter solves the problems that the existing filter has poor filtering effect and is easy to block.)

1. The utility model provides a many silt sand water source is continuous automatic back flush screen filter for slight irrigation which characterized in that, includes cylindrical shell (1), be provided with a plurality of filtration pores on shell (1), the inside of shell (1) is provided with cylindrical filter screen (4), the inside of filter screen (4) is provided with wiper mechanism, the top and the pipe (9) that absorbs water of shell (1) communicate, it has connected gradually from being close to shell (1) end behind pipe (9) to absorb water centrifugal pump (10), governing valve (11), absorb water behind pipe (9) and be located and communicate with the one end of high-pressure water pipe (8) between self-priming centrifugal pump (10), governing valve (11), the other end and the wiper mechanism lower part intercommunication of high-pressure water pipe (8).

2. The continuous automatic backwashing screen filter for micro irrigation of water sources with multiple muddy sands as claimed in claim 1, wherein the cleaning mechanism comprises a screen bottom plate (2), the screen bottom plate (2) is horizontally arranged at the bottom of the housing (1) and positioned in the housing (1), a hollow rotator (3) capable of rotating is arranged at the center of the screen bottom plate (2), the rotator (3) is positioned at the bottom of the filter screen (4) and communicated with one end of a water conduit (5), the other end of the water conduit (5) is connected with a water spray pipe (6), a plurality of fan-shaped spray heads (7) are arranged on the water spray pipe (6), plugs (12) are arranged at the two ends of the water spray pipe, and the other end of the rotator (3) is communicated with a high pressure water pipe (8).

3. The continuous automatic backwashing screen filter for micro-irrigation of a water source with multiple muddy sands as claimed in claim 2, wherein the water guide pipe (5) is horizontally arranged, and the water spray pipe (6) is vertical to the water guide pipe (5).

4. The continuous automatic backwashing screen filter for micro-irrigation of a multi-silt water source as claimed in claim 2, wherein a plurality of said fan-shaped spray heads (7) are located on the same plane and the distances between adjacent fan-shaped spray heads (7) are equal.

5. The continuous automatic back flushing screen filter for micro irrigation of water sources with multiple muddy sands as claimed in claim 4, wherein the angle between the fan-shaped nozzle (7) and the radial direction of the water spraying pipe (6) is 45 degrees.

6. The continuous automatic backwashing screen filter for the micro-irrigation of a water source with multiple muddy sands as claimed in claim 1, wherein the filter screen (4) is provided with a filter screen support rib (15), the filter screen support rib (15) is fixed at both ends of the housing (1), and a rubber water stop (13) is arranged between the filter screen support rib (15) and the housing (1).

7. The continuous automatic backwashing screen filter for micro-irrigation of a water source with multiple muddy sands as claimed in claim 1, wherein the diameter of the filtering hole of the housing is larger than the aperture of the filtering net (4).

8. The continuous automatic backwashing screen filter for micro-irrigation of a water source with multiple muddy sands as claimed in claim 1, wherein the housing (1) comprises an upper shell (1-1) and a lower shell (1-2), the upper shell (1-1) and the lower shell (1-2) are connected by a binding band (14), and a rubber water stop (13) is arranged between the upper shell (1-1) and the lower shell (1-2).

9. The continuous automatic backwashing screen filter for micro-irrigation of a water source with multiple muddy sands as claimed in claim 1, wherein said housing (1) is made of plastic or stainless steel.

Technical Field

The invention belongs to the technical field of farmland water-saving irrigation equipment, and particularly relates to a continuous automatic backwashing net-type filter for multi-silt water source micro-irrigation.

Background

The micro-irrigation is a irrigation method for directly and uniformly and accurately conveying water and nutrients required by the growth of crops to soil near the roots of the crops at a small flow rate through a pipeline system and an irrigation device arranged on a final-stage pipeline according to the requirements of the crops. However, the emitter has a narrow aperture and is easily blocked by impurities, so that the requirement on the cleanliness of water quality is high.

At present, the similar technology for filtering farmland micro-irrigation water sources at home and abroad is a screen filter. The filtering principle is as follows: utilize fine and close filament fabric as filter media, when irrigation water inflow filter met the filter screen, liquid was around flowing, and the filth is because the inertia effect is by the filter screen core separation, and all impurity particles that are greater than the mesh size all can be detained on the filter screen, and the water purification then flows into the delivery port through the filter screen core to the realization is followed the purpose that impurity separated in the mother liquor. The screen filter is mainly used for filtering dirt such as particles, sand, water scale and the like in irrigation water and can also be used for filtering irrigation water containing a small amount of organic dirt, the screen filter is generally cylindrical in shape and mainly comprises a closed shell, a filter screen, a sealing water stop piece and the like, and all the components are made of pressure-resistant and corrosion-resistant metal or plastic.

The main problems of the screen filter are as follows: is only suitable for irrigation water sources with small dirt content, such as well water or water sources of reservoirs, ponds, lakes and the like after precipitation. When the content of the dirt in the irrigation water source is slightly high, the filtering effect is poor, the irrigation water source is easily blocked, frequent washing is needed, and time and labor are wasted. Especially, when the pressure is high, a large amount of impurities such as powder particles, sand, water scale and the like can cause the surface of the net body to be blocked by impurities and dirt in a short time or in an instant state, then the net body is deformed or even damaged under the action of water pressure, and organic dirt can extrude through the filter screen to enter a pipeline, so that the system and the irrigator are blocked.

Disclosure of Invention

The invention aims to provide a continuous automatic back-flushing net type filter for micro-irrigation of a multi-silt water source, which aims to solve the problems that the existing filter is poor in filtering effect and easy to block.

The invention adopts the technical scheme that the continuous automatic back-flushing net type filter for the micro-irrigation of the multi-silt water source comprises a cylindrical shell, wherein a plurality of filtering holes are formed in the shell, a cylindrical filter screen is arranged in the shell, a cleaning mechanism is arranged in the filter screen, the top of the shell is connected with a water suction pipe of a water pump, a self-suction centrifugal pump, a pressure water pipe, an adjusting valve and the like are sequentially connected backwards, a high-pressure bypass water pipe (hereinafter referred to as a high-pressure water pipe) is arranged on the pressure water pipe, and the other end of the high-pressure water pipe is communicated with the cleaning.

The invention is also characterized in that:

the wiper mechanism includes the water guide steel pipe, and the water guide steel pipe level sets up in the bottom of shell and is located the shell, and the water guide steel pipe end links to each other with vertical spray pipe, and the both ends of spray pipe all are provided with the end cap, are provided with a plurality of shower nozzles on the spray pipe, and water guide steel pipe, spray pipe and shower nozzle form one can do 360 rotators of continuous rotation, and the other end and the high-pressure water pipe intercommunication of rotator.

The water guide pipe is horizontally arranged, and the water spraying pipe is vertical to the water guide pipe.

The plurality of spray heads are positioned on the same plane, and the distances between the adjacent spray heads are equal.

The water spraying shape of the spray head is fan-shaped, and an included angle of 45 degrees is formed between the water spraying shape of the spray head and the radial direction of the water spraying pipe.

Be provided with filter screen support rib on the filter screen, filter screen support rib is fixed in the both ends of shell, and is provided with the rubber strip between filter screen support rib and the shell.

The diameter of the filtering hole of the shell is larger than the aperture of the filtering net.

The shell comprises an upper shell and a lower shell, the upper shell and the lower shell are connected through a binding belt, and a rubber water stop is arranged between the upper shell and the lower shell.

The shell is made of plastic or stainless steel.

The invention has the beneficial effects that: the continuous automatic back-flushing net type filter for the micro-irrigation of the multi-silt water source fully utilizes the high-pressure clean water flow provided by the pressure water pipe and is organically combined with the cleaning mechanism in the filter net, so that the blockage in the filtering process is avoided, the filtering effect is improved, the service life of the filter is prolonged, the application range of the micro-irrigation water source is expanded, and the continuous automatic back-flushing net type filter plays a great promoting role in developing water-saving irrigation, saving water resources and improving the yield and quality of crops.

Drawings

FIG. 1 is a schematic structural view of a continuous automatic back-flushing screen filter for micro-irrigation of a multi-silt water source according to the present invention;

FIG. 2 is a schematic structural diagram of a cleaning mechanism in a continuous automatic back-flushing screen filter for micro-irrigation of a multi-silt water source according to the present invention;

FIG. 3 is a schematic view of the position structure of the spray head and the spray pipe in the continuous automatic back-flushing net filter for micro-irrigation of a multi-silt water source of the present invention.

In the figure, 1, a shell, 2, a filter screen bottom plate, 3, a rotator, 4, a filter screen, 5, a water guide pipe, 6, a water spray pipe, 7, a spray head, 8, a high-pressure water pipe, 9, a water suction pipe, 10, a self-priming centrifugal pump, 11, an adjusting valve, 12, a plug, 13, a rubber water stop, 14, a binding belt, 15, a filter screen support rib and 16, a pressure gauge are arranged;

1-1, an upper shell, 1-2, a lower shell.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention relates to a continuous automatic back-flushing net type filter for micro-irrigation of a multi-silt water source, which comprises a cylindrical shell 1, wherein a plurality of filtering holes are formed in the shell 1, the shell 1 mainly filters impurities and dirt with larger grain diameter in the water source and simultaneously plays a role of protecting an internal structure body, a cylindrical filter screen 4 is arranged in the shell 1, the filter screen 4 mainly plays a role of filtering the impurities and dirt with grain diameter larger than that of meshes, a cleaning mechanism is arranged in the filter screen 4 and mainly plays a role of back flushing, the impurities and dirt stuck on the outer surfaces of the filter screen 4 and the shell 1 are mainly flushed, the top of the shell is communicated with a water suction pipe 9, a self-priming centrifugal pump 10 and a regulating valve 11 are sequentially connected from the end close to the shell 1 behind the water suction pipe 9, and are positioned between the self-priming centrifugal pump 10 and the regulating, the other end of the high-pressure water pipe 8 is communicated with the lower portion of the cleaning mechanism, a filter screen support rib 15 is arranged on the filter screen 4, the filter screen support rib 15 is fixed at two ends of the shell 1, the filter screen support rib 15 mainly plays a role in structural support, a rubber water stop belt 13 is arranged between the filter screen support rib 15 and the shell 1, the diameter of a filter hole of the shell is larger than the aperture of the filter screen 4, a pressure gauge 16 is arranged behind the water suction pipe 9 and between the self-suction centrifugal pump 10 and the regulating valve 11, and the regulating valve 11 is used for regulating the pressure in the high-pressure water pipe 8 so as to meet the pressure requirement.

As shown in fig. 2, the cleaning mechanism includes a filter screen bottom plate 2, the filter screen bottom plate 2 is horizontally disposed at the bottom of the housing 1 and located in the housing 1, a hollow rotator 3 capable of rotating is disposed at the center of the filter screen bottom plate 2, the joint of the filter screen bottom plate 2 and the rotator 3 is sealed by epoxy resin, the rotator 3 is located at the center of the filter screen bottom plate 2, the lower part of the rotator is connected with a high pressure water pipe 8, the upper part of the rotator is communicated with one end of a water conduit 5, the water conduit 5 is horizontally disposed, the other end of the water conduit 5 is connected with a water spray pipe 6, the water spray pipe 6 is perpendicular to the water conduit 5, a plurality of fan-shaped nozzles 7 are disposed on the water spray pipe 6, the two ends of the water spray pipe are provided with plugs 12, the plurality of fan-shaped nozzles 7 on the water spray pipe 6 are located on the same plane and the distance between the adjacent fan, the effect of the device is that the vertical spray pipe is driven to rotate 360 degrees by means of natural reverse thrust formed by water spraying, water flow sprayed by each fan-shaped spray head 7 is vertical fan-shaped water flow, the water flow sprayed by the fan-shaped spray heads 7 is connected into a vertical water curtain when reaching the inner surface of the filter screen 4, dirt adhered to the outer surface of the filter screen 4 can be washed away from the surface of the filter screen 4 under the impact of reverse high-speed water flow, the purpose of cleaning the dirt without stopping the machine is achieved, and therefore normal safe operation of the system is guaranteed.

The shell 1 comprises an upper shell 1-1 and a lower shell 1-2, the upper shell 1-1 and the lower shell 1-2 are connected through a binding belt 14, and a rubber water stop 13 is arranged between the upper shell 1-1 and the lower shell 1-2.

The shell 1 is made of plastic, the shell 1 is formed by injection molding of an upper shell 1-1 and a lower shell 1-2, the shell 1 is made of stainless steel, and the shell 1 is integrally formed and is formed by coiling stainless steel plates.

The working process principle of the continuous automatic back flushing net type filter for the multi-silt water source micro-irrigation is as follows: the filter is arranged below the water surface of a water inlet pool of a pump station and is vertical to the water surface, water flow firstly filters impurity dirt with larger grain diameter larger than a filter hole through the shell 1, then the impurity dirt with smaller grain diameter larger than the filter hole enters the filter screen 4, then the impurity dirt with smaller grain diameter larger than the filter hole is filtered through the filter screen 4, water enters a downstream pipeline, the high-pressure water pipe 8 enables the filtered clean water flow to pass through a reaction force formed by the fan-shaped spray nozzles 7 which are arranged above the vertical spray pipe 6 and form a certain angle with the radial direction of the vertical spray pipe, the water guide pipe 5 drives the rotator 3 to rotate, and the continuous 360-degree rotation is realized, so that the continuous back flushing function of the filter screen from inside to. If the flushing pressure is too low and the flushing effect is deteriorated, the pressure can be immediately adjusted by the adjusting valve 11.

Through the mode, the filter is arranged at the water inlet front end of the self-priming centrifugal pump, mud and sand sundries are directly discharged into the water inlet pool without entering a pipeline system, and a large amount of mud and sand sundries can be contained, so that the filter is convenient to clean.