CN211836588U - Micro-pressure filter device before pump - Google Patents

Abstract

The utility model relates to a water-saving irrigation filter equipment technical field is a minute-pressure filter equipment before pump, and it includes filter screen section of thick bamboo, left side joint, right side joint, left branch water seat, right branch water seat and water knockout drum, and a filter screen section of thick bamboo is a horizontal cylinder section of thick bamboo that the axis was arranged along the level, and filter screen section of thick bamboo left end is fixed with the left joint that can be connected with left part water intake pipe. This application is rational in infrastructure and compact, high durability and convenient use, the water knockout drum of installation in its filter screen section of thick bamboo can effectively improve the velocity of flow of near filter screen rivers, through opening right articulate pipeline or valve, can wash away the washing to filter screen section of thick bamboo inner wall, can avoid the mesh jam, prevent that the filter cake from forming, increase filter area, effectively improved filtering capacity, showing and improving filtration efficiency, do not influence the filtration during the blowdown, can realize incessant water supply, it is good to have a filter effect, can show and reduce the energy consumption, the energy saving, easy dismounting is swift, easily clearance, the characteristics of easy operation.

Description

Micro-pressure filter device before pump

Technical Field

The application relates to the technical field of water-saving irrigation filtering devices, in particular to a micro-pressure filtering device before a pump.

Background

The water resource of China is relatively poor, particularly in western regions such as Xinjiang, Gansu and the like, the water resource is deficient, precipitation is rare, evaporation is strong, the contradiction that the water resource shortage is not suitable for economic development is increasingly prominent, and the industrial and agricultural development of China is seriously influenced by drought and water shortage. The micro-irrigation engineering technology plays an important role in efficient water conservation, and how to effectively utilize surface water from mountain stream rivers for micro-irrigation becomes a key for popularizing the efficient water conservation technology. In order to ensure the normal operation of a micro-irrigation system, a silt step treatment method is mainly adopted at present, and a multi-stage silt treatment engineering facility is usually arranged on a water diversion channel system so as to achieve the purpose of efficiently discharging silt and leading water, wherein the common one-stage silt treatment engineering facility comprises: river sluice type, curve type, bottom fence type and layered diversion engineering, etc., but the treated water flow often can not completely meet the treatment limit requirements on sand content and particle size, and secondary silt treatment engineering facilities must be built at the water inlet sluice or on a downstream channel thereof, which increases the investment of an irrigation system and causes higher treatment cost of irrigation water.

At present, irrigation water is further settled and filtered by arranging a grit chamber and a floating type pre-pump filter, and then filtered water is conveyed to a pipeline system for micro-irrigation. The filter before the type of floating pump is commonly called "float on water", it can effectively get rid of aquatic impurity, the filter effect is better, but its impurity that filters out need rely on the manpower to decontaminate in the grit chamber all the time to need to be equipped with special messenger and guard, comparatively consume manpower resources, and it needs external power to let the filter screen rotatory, wash impurity, have and consume manpower resources, easily block up, filtration efficiency is low, cost and energy consumption are higher scheduling problem, can't satisfy water conservation irrigation's actual need.

Disclosure of Invention

An object of this application is to provide a micro-pressure filter equipment before pump, has overcome above-mentioned prior art not enough, and it can effectively solve the problem that filter equipment exists to consume manpower resources, easy jam, filtration efficiency is low, cost and energy consumption are higher before the pump of current water conservation irrigation.

The purpose of the application is realized as follows: a micro-pressure filter device in front of a pump comprises a filter screen cylinder, a left joint, a right joint, a left water distribution seat, a right water distribution seat and a water distributor, wherein the filter screen cylinder is a transverse cylindrical cylinder with the axis arranged horizontally, the left end of the filter screen cylinder is fixedly provided with the left joint capable of being connected with a left water inlet pipeline, the right end of the filter screen cylinder is fixedly provided with the right joint capable of being connected with a right sewage discharge pipeline, the center of an inner cavity at the left end of the left joint or the filter screen cylinder is fixedly provided with the left water distribution seat, the center of an inner cavity at the right end of the right joint or the filter screen cylinder is fixedly provided with the right water distribution seat, the water distributor is arranged in the filter screen cylinder through the left water distribution seat and the right water distribution seat, the water distributor comprises a reducing core body and a flow guide radial plate, the outer diameter of the middle part of the reducing core body is large, the outer diameters of the left end and the right end are small, the left end and the right end of the flow guide radial plate respectively extend to the left end and the right end of the reducing core body.

Furthermore, the filter screen cylinder comprises a cylinder frame and a filter screen body, cylinder frame lining rings with frame ring flanges are respectively fixed at the left end and the right end of the cylinder frame, the filter screen body is fixed outside the cylinder frame and comprises a trash screen layer and a protective screen layer, the inner side of the protective screen layer is fixed outside the cylinder frame, and the trash screen layer is fixed outside the protective screen layer.

Furthermore, the middle part of the reducing core body of the water distributor is cylindrical, and the projection of the outer side surface of the end part of the reducing core body on a vertical plane is an elliptic arc or a parabola or an isosceles trapezoid or an isosceles triangle.

Furthermore, the flow guide radial plate of the water separator is a flat plate or a spiral arc plate.

Further, the left joint comprises a joint body, a net barrel cutting sleeve and a pipe joint screw sleeve, an external groove with a joint external thread is arranged on the outer side surface of the left part of the joint body, the pipe joint screw sleeve is fixedly arranged in the external groove through the joint external thread, a pipeline mounting thread is arranged on the inner wall of the pipe joint screw sleeve, a seat support groove is arranged on the inner wall of the right part of the joint body, a left water diversion seat is arranged in the seat support groove, a guide plate groove is arranged at the right end of the left water diversion seat corresponding to the end position of a guide plate disc, each guide plate disc at the left end of the water diversion device is arranged on the left water diversion seat through the guide plate groove, an internal connection groove with a joint internal thread is arranged on the inner wall of the right part of the seat support groove, the net barrel cutting sleeve is fixedly arranged in the internal connection groove through a joint internal thread, a cutting sleeve boss is arranged on the inner wall of the right, the right joint and the left joint have the same structure.

Furthermore, the right end of the left water distribution seat corresponding to the end position of the barrel frame lining ring is provided with an annular boss, the right end of the annular boss is tightly pressed on the end face of the barrel frame lining ring and keeps sealed, the inner wall of the right part of the limiting snap ring is provided with a limiting ring table, the left end of the limiting ring table is tightly pressed on the right end face of the frame ring flange, and the left end of the limiting snap ring is tightly pressed on the right end face of the left water distribution seat.

Furthermore, the left joint is connected with a grit chamber through a water inlet pipe, a filter tank is arranged outside the filter screen cylinder, the left joint and the right joint are positioned in the filter tank, the water inlet pipe is arranged on the water inlet pipe, the inner cavity of the filter screen cylinder is communicated with the lower part of the grit chamber through the water inlet valve and the water inlet pipe, the right joint is connected with a sewage cleaning pipe with a sewage cleaning valve, the right end of the sewage cleaning pipe is connected with a sewage discharge hose, and the inner cavity of the filter screen cylinder can be communicated with the sewage discharge hose through the sewage cleaning valve and.

Furthermore, the water inlet valve and the sewage disposal valve are electromagnetic valves or electric valves, a liquid level sensor is arranged on the inner wall of the upper part of the grit chamber, connecting terminals of the water inlet valve and the sewage disposal valve are electrically connected with a controller, and a signal output terminal of the liquid level sensor is electrically connected with a signal input terminal of the controller.

Further, a filter shell is arranged outside the filter screen cylinder, a filter clean cavity surrounding the filter screen cylinder is arranged inside the filter shell, a left joint is arranged at the left part of the filter shell, a right joint is arranged at the right part of the filter shell, the filter screen cylinder separates a left joint inner cavity and a right joint inner cavity from the filter clean cavity, a water supply port is arranged at the lower part of the filter shell, the water supply port inner cavity is communicated with the filter clean cavity, the left joint comprises a joint body and a pipe joint screw sleeve, an external groove with a joint external thread is arranged on the outer side surface of the left part of the joint body, the pipe joint screw sleeve is fixedly arranged in the external groove through the joint external thread, a pipeline mounting thread is arranged on the inner wall of the pipe joint screw sleeve, a seat support groove is arranged on the inner wall of the right part of the joint body, a left water diversion seat corresponding to the end position of the water diversion web is provided with a guide plate groove, each water diversion web at, the right inner wall of the seat supporting groove is provided with an internally connected groove with a joint internal thread, the joint body is fixedly installed at the left end of the filter shell through the joint internal thread, the right end of the left water distribution seat is tightly pressed at the left end of the frame ring flange of the filter screen cylinder, and the right joint is identical to the left joint in structure.

This application is rational in infrastructure and compact, high durability and convenient use, the water knockout drum of installation in its filter screen section of thick bamboo can effectively improve the velocity of flow of near filter screen rivers, through opening right articulate pipeline or valve, can wash away the washing to filter screen section of thick bamboo inner wall, can avoid the mesh jam, prevent that the filter cake from forming, increase filter area, effectively improved filtering capacity, showing and improving filtration efficiency, do not influence the filtration during the blowdown, can realize incessant water supply, it is good to have a filter effect, can show and reduce the energy consumption, the energy saving, easy dismounting is swift, easily clearance, the characteristics of easy operation.

Drawings

The specific structure of the application is given by the following figures and examples:

FIG. 1 is a front view semi-sectional structural schematic diagram of embodiment 1 of the present application;

FIG. 2 is an enlarged cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the working state of embodiment 1 of the present application;

fig. 4 is a front view partially sectional structural schematic diagram of embodiment 2 of the present application.

Legend: the filter comprises a filter screen cylinder 1, a left water diversion seat 2, a right water diversion seat 3, a variable diameter core 4, a flow guide radial plate 5, a screen cylinder frame 6, a frame ring flange 7, a cylinder frame lining ring 8, a protective screen layer 9, a joint body 10, a screen cylinder sleeve 11, a pipe joint screw sleeve 12, an external groove 13, a pipeline mounting thread 14, a seat bracket 15, a guide plate groove 16, an internal groove 17, a sleeve boss 18, a limiting snap ring 19, an annular boss 20, a limiting ring table 21, a water inlet pipe 22, a grit chamber 23, a filter tank 24, a water inlet valve 25, a decontamination valve 26, a decontamination pipe 27, a decontamination hose 28, a filter shell 29, a water supply port 30, a decontamination grid 31, a pressure water pump 32 and a water outlet pipe 33.

Detailed Description

The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.

Example 1: as shown in figures 1-3, the pump front micro-pressure filter device comprises a filter screen cylinder 1, a left joint, a right joint, a left water distribution seat 2, a right water distribution seat 3 and a water distributor, wherein the filter screen cylinder 1 is a transverse cylindrical cylinder with the axis arranged horizontally, the left end of the filter screen cylinder 1 is fixed with the left joint which can be connected with a left water inlet pipeline, the right end of the filter screen cylinder 1 is fixed with the right joint which can be connected with a right sewage discharge pipeline, the center of the inner cavity at the left end of the left joint or the filter screen cylinder 1 is fixed with the left water distribution seat 2, the center of the inner cavity at the right end of the right joint or the filter screen cylinder 1 is fixed with the right water distribution seat 3, the water distributor is arranged in the filter screen cylinder 1 through the left water distribution seat 2 and the right water distribution seat 3, the water distributor comprises a reducing core body 4 and a flow guide radial plate 5, the outer diameter of the reducing core body 4 is large, the, the diversion radial plates 5 are uniformly arranged along the outer circumference of the reducing core body 4, the outer edges of the diversion radial plates 5 are close to the inner wall of the filter screen cylinder 1, and the left end and the right end of each diversion radial plate 5 respectively extend to the left end and the right end of the reducing core body 4. The left water distribution seat 2, the right water distribution seat 3 and the water distributor can be detachably connected together or fixed together, the flow guide radial plate 5 can be fixed on the outer side of the reducing core body 4 by the existing known methods such as screw connection, welding, bonding or embedding, and the flow guide radial plate 5 and the reducing core body 4 can be made into a whole by the known corrosion-resistant and high-strength materials such as engineering plastics or resin, nylon composite materials and the like through methods such as mould pressing, injection molding and the like. The water distributor is arranged in the filter screen cylinder 1, the flow state of water flow can be changed, a filter cavity is formed between the outer side of the reducing core body 4 and the filter screen cylinder 1, when water containing impurities enters the filter cavity from a left joint, the water flows out of meshes on the side wall of the filter screen cylinder 1 to the outside of the filter screen cylinder 1 to realize water supply filtration, impurities such as silt are attached to the inner wall of the filter screen cylinder 1, the water distributor can effectively improve the flow rate of the water flow near the filter screen cylinder 1, thereby avoiding mesh blockage, preventing filter cake formation and increasing the filtration area, effectively improving the filtration capacity and remarkably improving the filtration efficiency, when impurities and dirt attached to the inner wall of the filter screen cylinder 1 are more, the water flow in the filter screen cylinder 1 flows out from a right joint by opening a pipeline or a valve connected with the right joint, so as to realize scouring and cleaning of the inner wall of the filter screen cylinder 1, and simultaneously part of water outside the filter screen cylinder 1 flows back into the inner cavity of the filter screen cylinder 1 by pressure, the filth that adheres to on the filter screen section of thick bamboo 1 inner wall of forcing drops, realizes the clearance to filter screen section of thick bamboo 1 and carries out the blowdown, does not influence the filtration during the blowdown, can realize incessant normal water supply during the washing, has improved filtration efficiency when reducing the energy consumption, has prolonged the filtration cycle, only needs little water yield and lower water pressure during the washing moreover. The natural filtration device has the advantages of being simple and reasonable in structure, convenient to use, capable of achieving natural filtration without pressurization, good in filtration effect, capable of remarkably reducing energy consumption and saving energy, convenient and fast to disassemble and assemble, easy to clean and easy to operate.

As shown in fig. 1-2, the filter screen cylinder 1 comprises a cylinder frame 6 and a filter screen body, wherein cylinder frame lining rings 8 with frame ring flanges 7 are respectively fixed at the left end and the right end of the cylinder frame 6, the filter screen body is fixed outside the cylinder frame 6 and comprises a trash screen layer and a protective screen layer 9, the inner side of the protective screen layer 9 is fixed outside the cylinder frame 6, and the trash screen layer is fixed outside the protective screen layer 9. In actual manufacturing, the protective net layer 9 is preferably a hard stainless steel filter screen, and the impurity filtering net layer can be effectively protected by the protective net layer 9, so that the service life of the impurity filtering net layer is prolonged. The filter screen layer and the protection screen layer 9 are preferably installed together in the prior detachable connection mode such as a buckle, and can be reused by only replacing the filter screen layer when the filter screen layer is stained or damaged, so that the filter screen is more economic and environment-friendly.

As shown in fig. 1-2, the middle part of the reducing core body 4 of the water separator is cylindrical, and the projection of the outer side surface of the end part of the reducing core body 4 on a vertical plane is an elliptic arc or a parabola or an isosceles trapezoid or an isosceles triangle. The end of the reducing core body 4 can be in a semi-elliptical shape, a parabolic cambered surface, a truncated cone shape or a conical shape, and the left end and the right end can be in the same shape or different shapes.

According to actual needs, the flow guide radial plate 5 of the water separator is a flat plate or a spiral arc plate. The flow guide radial plate 5 is a flat plate and is easy to manufacture, the flow guide radial plate 5 is a spiral arc plate, the filtering period of the filtering device can be further prolonged, and the filtering effect is better.

As shown in fig. 1-2, the left joint comprises a joint body 10, a net barrel cutting sleeve 11 and a pipe connecting screw sleeve 12, an external groove 13 with a joint external thread is arranged on the left outer side surface of the joint body 10, the pipe connecting screw sleeve 12 is fixedly arranged in the external groove 13 through the joint external thread, a pipeline mounting thread 14 is arranged on the inner wall of the pipe connecting screw sleeve 12, a seat bracket 15 is arranged on the right inner wall of the joint body 10, the left water diversion seat 2 is arranged in the seat bracket 15, a guide plate groove 16 is arranged at the right end of the left water diversion seat 2 corresponding to the end position of the guide plate 5, each guide plate 5 at the left end of the water diversion device is arranged on the left water diversion seat 2 through the guide plate groove 16, an internal groove 17 with a joint internal thread is arranged on the right inner wall of the seat bracket 15, the net barrel cutting sleeve 11 is fixedly arranged in the internal groove 17 through the joint internal thread, a boss 18 is arranged on the right inner wall of the net barrel cutting sleeve 11, a, the clamping sleeve boss 18 of the net barrel clamping sleeve 11 is tightly pressed on the frame ring flange 7 through the limiting clamping ring 19, and the right joint and the left joint are identical in structure. Through frame ring flange 7 and spacing snap ring 19, the fixed filter screen section of thick bamboo 1 of net section of thick bamboo cutting ferrule 11, twist from left end or right-hand member and move net section of thick bamboo cutting ferrule 11 and push it to filter screen section of thick bamboo 1 middle part, take off behind the spacing snap ring 19 that corresponds, can take off filter screen section of thick bamboo 1, realize its quick replacement to change the filter screen section of thick bamboo 1 of different mesh sizes, different specifications according to actual need, use convenient and fast more. In addition, can also set up high pressure nozzle in the outside of filter screen section of thick bamboo 1, when the inside water of filter screen section of thick bamboo 1 can't be with its clean time of washing, adopt the mode that high pressure nozzle washed to resume filter screen section of thick bamboo 1's cleanliness relatively fast.

As shown in fig. 1-2, the right end of the left water diversion seat 2 corresponding to the end position of the bobbin holder backing ring 8 is provided with an annular boss 20, the right end of the annular boss 20 is pressed against the end face of the bobbin holder backing ring 8 and keeps sealed, the right inner wall of the limit snap ring 19 is provided with a limit ring platform 21, the left end of the limit ring platform 21 is pressed against the right end face of the frame ring flange 7, and the left end of the limit snap ring 19 is pressed against the right end of the left water diversion seat 2. The guide plate groove 16 can realize the positioning of the diversion radial plate 5, the water separator is fixedly arranged on the left water distribution seat 2 and the right water distribution seat 3 through the diversion radial plate 5, the positioning is simple and accurate, the dismounting is convenient and fast, the cross section of the limiting snap ring 19 is L-shaped, the barrel frame lining ring 8 can be locked through the limiting ring platform 21, and the butt joint end face of the left water distribution seat 2 and the barrel frame lining ring 8 can be kept sealed through the annular boss 20.

As shown in fig. 3, the left joint is connected with a grit chamber 23 through a water inlet pipe 22, a filter chamber 24 is arranged outside the filter screen cylinder 1, the left joint and the right joint are positioned in the filter chamber 24, the water inlet pipe 22 is provided with a water inlet valve 25, the inner cavity of the filter screen cylinder 1 is communicated with the lower part of the grit chamber 23 through the water inlet valve 25 and the water inlet pipe 22, the right joint is connected with a sewage cleaning pipe 27 with a sewage cleaning valve 26, the right end of the sewage cleaning pipe 27 is connected with a sewage discharging hose 28, and the inner cavity of the filter screen cylinder 1 can be communicated with the sewage discharging hose 28 through the sewage cleaning valve. According to actual needs, the grit chamber 23 and the filtering chamber 24 can be constructed by masonry or brick-concrete structure, prefabricated concrete, welded steel plate, or made by pressing, injection molding, welding and other known methods of engineering plastics and other materials; in addition, a cell array set having a plurality of sand settling cells 23 or filtration cells 24 arranged side by side may be used as required. The sewage tank can be communicated through the sewage hose 28, so that the use is more convenient, or the sewage can be intensively discharged to a space or a designated area where the sewage can be stored. When the filter is adopted for filtering, the head loss is small, and the energy is saved; surface water enters the strip-shaped or trapezoid grit chamber 23 from the water channel to settle, water flow in the grit chamber 23 enters the filter screen cylinder 1 through the water inlet pipe 22 to be filtered, the water flow in the water inlet pipe 22 is used for filtering and flushing, energy consumption can be effectively saved, the size and scale of the grit chamber 23 can be reduced by arranging a filter at a water outlet of the grit chamber 23, land resource saving is facilitated, the manufacturing cost of a micro-irrigation system is reduced, maintenance is frequently avoided for farmers in the using process, long-term water supply can be met, the defects of the existing filter before and after a pump are overcome, the device has the characteristics of high filtering efficiency, small occupied area, low investment and operation cost, safety in use, simplicity in maintenance, environmental friendliness, and capability of reducing the manufacturing cost of the micro-irrigation system and improving the filtering efficiency.

According to actual needs, the water inlet valve 25 and the decontamination valve 26 are electromagnetic valves or electric valves, a liquid level sensor is arranged on the inner wall of the upper part of the grit chamber 23, the wiring terminals of the water inlet valve 25 and the decontamination valve 26 are electrically connected with a controller, and the signal output terminal of the liquid level sensor is electrically connected with the signal input terminal of the controller. The mounting height of the liquid level sensor in the grit chamber 2 is determined as required, when the actual liquid level in the grit chamber 23 is lower than the liquid level sensor, no signal is transmitted to the controller by the liquid level sensor, the controller enables the water inlet valve 25 to be opened through the control circuit, the filtering is realized through normal work of the device, when the actual liquid level in the grit chamber 23 is higher than the liquid level sensor, the fact that the filter screen cylinder 1 is blocked is indicated, the liquid level sensor outputs signals and transmits the signals to the controller, the controller enables the decontamination valve 26 to be opened through the control circuit, the device can clean the dirt in the filter screen cylinder 1 without stopping filtering, and therefore, the automatic control of the water inlet valve 25 and the decontamination valve 26 is realized through the controller.

The working process of the embodiment 1 of the application is as follows: as shown in fig. 3, a grit chamber 23 is arranged in advance and stores irrigation water to be filtered, the irrigation water firstly settles larger silt particles through the grit chamber 23, the inlet of a water inlet pipe 22 is positioned in the grit chamber 23 and is provided with a trash rack 31, preferably, the pressure head of the irrigation water to be filtered in the water inlet pipe 22 is 0.2 to 2 meters, a filter chamber 24 separated from the grit chamber 23 is arranged, the application is arranged at the lower part of the filter chamber 24 and is connected with the water inlet pipe 22 and a trash cleaning pipe 27 through a left connector and a right connector, a water inlet valve 25 is positioned on the water inlet pipe 22 between the grit chamber 23 and the filter chamber 24, a ladder convenient for climbing operation is arranged, a trash cleaning valve 26 is positioned on a trash cleaning pipe 27 outside the filter chamber 24, so that the working environment of the trash cleaning valve 25 and the trash cleaning valve 26 is relatively dry, the operation, the maintenance and the replacement are convenient, the lower part or the bottom of the water inlet valve 24 is provided with a pressure water pump 32, and the pressure pump 32 can be connected with a pipeline system for, the lower part of the filter tank 24 corresponding to the right end of the sewage cleaning pipe 27 is provided with a sewage draining outlet, the right end of the sewage cleaning pipe 27 extends to the outside of the filter tank 24 through the sewage draining outlet and is provided with a sewage draining hose 28, and the tail end of the sewage draining hose 28 is provided with a sewage draining tank. When filtering operation is carried out, firstly, the controller enables the water inlet valve 25 to be opened and the dirt removing valve 26 to be kept closed, meanwhile, the pressure water pump 32 is started, irrigation water to be filtered in the grit chamber 23 enters the filter screen cylinder 1 from the water inlet pipe 22 after passing through the dirt blocking grid 31, the irrigation water is filtered from inside to outside through the filter screen cylinder 1, all dirt larger than the diameter size of the filter screen is intercepted in the filter screen cylinder 1, and the pressure water pump 32 enables the filtered clear water to enter a pipeline system through the water outlet pipe 33 and is conveyed to the field in a pressurizing or self-pressurizing mode; after filter equipment worked for a period of time, when filter screen cylinder 1 blockked up to the certain degree, filtration efficiency will seriously descend, the blowdown needs be carried out this moment, with the filtering performance of recovering the filter, through opening trash removal valve 26, carry out the blowdown under the effect of natural water head, the filth of adhesion on the filter screen is by rivers in filter screen cylinder 1 through trash removal pipe 27, blowdown hose 28 flushes into the blowdown pond, after the blowdown is washed, close trash removal valve 26, the filter changes over to next filtration cycle, filter screen cylinder 1 can incessantly filter at the in-process of blowdown, can realize filtering while blowdown, just so realized when continuously filtering irrigation water, can carry out the operation of decontaminating as required, thereby under the prerequisite that reduces the energy consumption, the filtration efficiency has been improved remarkably.

Example 2: as shown in fig. 4, a filter housing 29 is installed outside the filter screen cartridge 1, a filtering clean cavity surrounding the filter screen cartridge 1 is arranged inside the filter housing 29, a left joint is installed at the left part of the filter housing 29, a right joint is installed at the right part of the filter housing 29, the filter screen cartridge 1 separates the left joint inner cavity and the right joint inner cavity from the filtering clean cavity, a water supply port 30 is arranged at the lower part of the filter housing 29, the water supply port 30 inner cavity is communicated with the filtering clean cavity, the left joint comprises a joint body 10 and a pipe joint screw sleeve 12, an external groove 13 with a joint external thread is arranged on the left outer lateral surface of the joint body 10, the pipe joint screw sleeve 12 is fixedly installed in the external groove 13 through the joint external thread, a pipeline installation thread 14 is arranged on the inner wall of the pipe joint screw sleeve 12, a seat bracket 15 is arranged on the right inner wall of the joint body 10, a left water diversion seat 2 is installed in the bracket 15, a guide plate groove 16 is, each diversion radial plate 5 at the left end of the water separator is arranged on the left water separation seat 2 through a guide plate groove 16, an inner connecting groove 17 with a joint internal thread is arranged on the inner wall of the right part of the seat support groove 15, the joint body 10 is fixedly arranged at the left end of the filter shell 29 through the joint internal thread, the right end of the left water separation seat 2 is tightly pressed at the left end of a frame ring flange 7 of the filter screen cylinder 1, and the right joint and the left joint have the same structure. Through at filter screen section of thick bamboo 1 externally mounted filter housing 29, can make this application into small-size product, supply water department in the place ahead of filter screen section of thick bamboo 1 and do not set up grit chamber 23, the water source directly gets into this application and filters, flows out by water supply port 30 and realizes driping irrigation, agricultural irrigation usage such as sprinkling irrigation, can adapt to the peasant household demand, and it is comparatively convenient to install and use. The water supply inlet 30 may be provided with a pipe coupling 12 for connecting an external water pipe more conveniently, as required. During the in-service use, only need through the left side connect through the inlet tube with the input treat that filter irrigation water source is connected, connect through the pipe of decontaminating of taking the valve through the right side with blowdown hose or blowdown pond and connect, supply water inlet 30 with go out water piping connection, can send into pipe-line system with the clear water after the filtration through the outlet pipe, carry to the field through the mode of pressurization or autogenous pressure.

The foregoing description is by way of example only and is not intended as limiting the embodiments of the present application. All obvious variations and modifications of the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides a minute-pressure filter equipment before pump which characterized in that: the filter comprises a filter screen cylinder, a left joint, a right joint, a left water distribution seat, a right water distribution seat and a water distributor, wherein the filter screen cylinder is a transverse cylinder with the axis arranged horizontally, the left joint capable of being connected with a left water inlet pipeline is fixed at the left end of the filter screen cylinder, the right joint capable of being connected with a right sewage discharge pipeline is fixed at the right end of the filter screen cylinder, the left water distribution seat is fixed at the center of an inner cavity at the left end of the left joint or the filter screen cylinder, the right water distribution seat is fixed at the center of an inner cavity at the right end of the right joint or the filter screen cylinder, the water distributor is arranged in the filter screen cylinder through the left water distribution seat and the right water distribution seat, the water distributor comprises a reducing core body and a flow guide radial plate, the outer diameter of the reducing core body is large, the outer diameters of the left end and the right end are small, at least three flow guide radial plates, the left end and the right end of the flow guide radial plate respectively extend to the left end and the right end of the reducing core body.

2. The pre-pump micro-pressure filtration device of claim 1, wherein: the filter screen cylinder comprises a cylinder frame and a filter screen body, cylinder frame lining rings with frame ring flanges are respectively fixed at the left end and the right end of the cylinder frame, the filter screen body is fixed outside the cylinder frame and comprises a trash filter screen layer and a protective screen layer, the inner side of the protective screen layer is fixed outside the cylinder frame, and the trash filter screen layer is fixed outside the protective screen layer.

3. The pre-pump micro-pressure filtration device of claim 1, wherein: the middle part of the reducing core body of the water distributor is cylindrical, and the projection of the outer side surface of the end part of the reducing core body on a vertical plane is an elliptic arc or a parabola or an isosceles trapezoid or an isosceles triangle; or/and the flow guide radial plate of the water separator is a flat plate or a spiral arc plate.

4. A pre-pump micro-pressure filtration device as claimed in claim 1, 2 or 3, wherein: the left joint comprises a joint body, a net barrel clamping sleeve and a pipe connecting screw sleeve, an external groove with a joint external thread is arranged on the outer side surface of the left part of the joint body, the pipe connecting screw sleeve is fixedly arranged in the external groove through the joint external thread, a pipeline mounting thread is arranged on the inner wall of the pipe connecting screw sleeve, a seat support groove is arranged on the inner wall of the right part of the joint body, a left water distribution seat is arranged in the seat support groove, a guide plate groove is arranged at the right end of the left water distribution seat corresponding to the end position of a guide radial plate, each guide radial plate at the left end of the water distributor is arranged on the left water distribution seat through the guide plate groove, an internal connection groove with a joint internal thread is arranged on the inner wall of the right part of the seat support groove, the net barrel clamping sleeve is fixedly arranged in the internal connection groove through the joint internal thread, a clamping sleeve boss is arranged on the inner wall of the, the right joint and the left joint have the same structure.

5. The pre-pump micro-pressure filtration device of claim 4, wherein: the right end of the left water distribution seat corresponding to the end position of the barrel frame lining ring is provided with an annular boss, the right end of the annular boss is tightly pressed on the end face of the barrel frame lining ring and keeps sealed, the inner wall of the right part of the limiting snap ring is provided with a limiting ring table, the left end of the limiting ring table is tightly pressed on the right end face of the frame ring flange, and the left end of the limiting snap ring is tightly pressed on the right end face of the left water distribution seat.

6. The pre-pump micro-pressure filtration device of claim 4, wherein: the left connector is connected with a grit chamber through a water inlet pipe, the outside of the filter screen cylinder is provided with a filter tank, the left connector and the right connector are positioned in the filter tank, the water inlet pipe is arranged on the water inlet pipe, the inner cavity of the filter screen cylinder is communicated with the lower part of the grit chamber through the water inlet valve and the water inlet pipe, the right connector is connected with a sewage cleaning pipe with a sewage cleaning valve, the right end of the sewage cleaning pipe is connected with a sewage discharge hose, and the inner cavity of the filter screen cylinder can be communicated with the sewage discharge hose through.

7. The pre-pump micro-pressure filtration device of claim 5, wherein: the left connector is connected with a grit chamber through a water inlet pipe, the outside of the filter screen cylinder is provided with a filter tank, the left connector and the right connector are positioned in the filter tank, the water inlet pipe is arranged on the water inlet pipe, the inner cavity of the filter screen cylinder is communicated with the lower part of the grit chamber through the water inlet valve and the water inlet pipe, the right connector is connected with a sewage cleaning pipe with a sewage cleaning valve, the right end of the sewage cleaning pipe is connected with a sewage discharge hose, and the inner cavity of the filter screen cylinder can be communicated with the sewage discharge hose through.

8. The pre-pump micro-pressure filtration device of claim 6, wherein: the water inlet valve and the sewage disposal valve are electromagnetic valves or electric valves, the inner wall of the upper part of the grit chamber is provided with a liquid level sensor, the wiring terminals of the water inlet valve and the sewage disposal valve are electrically connected with a controller, and the signal output terminal of the liquid level sensor is electrically connected with the signal input terminal of the controller.

9. The pre-pump micro-pressure filtration device of claim 7, wherein: the water inlet valve and the sewage disposal valve are electromagnetic valves or electric valves, the inner wall of the upper part of the grit chamber is provided with a liquid level sensor, the wiring terminals of the water inlet valve and the sewage disposal valve are electrically connected with a controller, and the signal output terminal of the liquid level sensor is electrically connected with the signal input terminal of the controller.

10. A pre-pump micro-pressure filtration device as claimed in claim 1, 2 or 3, wherein: a filter shell is arranged outside the filter screen cylinder, a filtering cavity surrounding the filter screen cylinder is arranged inside the filter shell, a left joint is arranged at the left part of the filter shell, a right joint is arranged at the right part of the filter shell, the inner cavity of the left joint and the inner cavity of the right joint are isolated from the filtering cavity by the filter screen cylinder, a water supply port is arranged at the lower part of the filter shell, and the inner cavity of the water supply port is communicated with the filtering cavity; the left connector comprises a connector body and a pipe connector threaded sleeve, an external groove with a connector external thread is formed in the outer side face of the left portion of the connector body, the pipe connector threaded sleeve is fixedly installed in the external groove through the connector external thread, pipeline installation threads are formed in the inner wall of the pipe connector threaded sleeve, a seat supporting groove is formed in the inner wall of the right portion of the connector body, a left water distributing seat is installed in the seat supporting groove, a guide plate groove is formed in the right end of the left water distributing seat corresponding to the end position of a water diversion radial plate, each water diversion radial plate at the left end of the water distributor is installed on the left water distributing seat through the guide plate groove, an internal connecting groove with a connector internal thread is formed in the inner wall of the right portion of the seat supporting groove, the connector body is fixedly installed at the left end of a filter shell through a connector internal.

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