Unit flow controller under stable pressure conditions

Abstract

The present invention discloses a unit flow controller under stable pressure conditions, comprising a plurality of flow control boxes connected in series head to tail, a first partition plate vertically downwardly provided at the top of the interior of the flow control box, a second partition plate inclined downwardly provided at the bottom end of the first partition plate and fixedly connected to an inner wall of one side of the flow control box, an inner cavity of the flow control box being divided into a water injection cavity and a water delivery cavity by the first partition plate and the second partition plate, a fixed water blocking plate inclined upwardly provided inside the water injection cavity and fixedly connected to the lowest end of the first partition plate, a concave-shaped water inlet provided at one end of the fixed water blocking plate close to the first partition plate; the present invention can make water flow evenly into each unit underground storage and irrigation device, adopts a method of water injection and water delivery compartment control, realizes automatic control of unit storage and water supply under stable water delivery pressure conditions, and satisfies the water delivery demand of the irrigation system at the same time.

Description

Technical Field

[0001] The invention relates to the technical field related to agricultural irrigation, and in particular to a unit flow controller under stable pressure conditions. Background Art

[0002] Infiltration irrigation is the irrigation system with the highest water utilization rate. At present, the water supply end of infiltration irrigation mainly uses drippers, drip irrigation belts or clay pipes to discharge water. The water supply of these types of terminals depends on the water discharge rate and irrigation time. Burying pipelines, using pipelines to store water, and using microporous infiltration irrigation in water storage pipelines is a new infiltration irrigation technology worth exploring in recent years. Under certain water pressure conditions, to ensure automatic quantitative water storage and water supply for each unit of the irrigation system, it is necessary to effectively control the water delivery of each unit.

[0003] During the irrigation process, the current unit flow controller cannot automatically control the water supply and cannot meet the water delivery needs of the irrigation system. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides a unit flow controller under stable pressure conditions.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The unit flow controller under stable pressure conditions of the present invention comprises a plurality of flow control boxes connected in series end to end, the top of the inner part of the flow control box is provided with a first dividing plate vertically downward, the bottom end of the first dividing plate is provided with a second dividing plate inclined downward and fixedly connected to an inner wall of one side of the flow control box, the inner cavity of the flow control box is divided into a water injection cavity and a water delivery cavity by the first dividing plate and the second dividing plate, the interior of the water injection cavity is provided with a fixed water blocking plate inclined upward and fixedly connected to the lowest end of the first dividing plate, a concave-shaped water inlet is provided on one end of the fixed water blocking plate close to the first dividing plate, a water guide hole for guiding water in the water injection cavity into the water delivery cavity is provided on the first dividing plate, a water inlet pipe connected to the water injection cavity and located above the fixed water blocking plate is provided on the flow control box, a water outlet pipe connected to the lowest end of the water delivery cavity is provided on the flow control box, and a plurality of water injection ports for connecting to an external underground irrigation device are connected at the bottom end of the flow control box.

[0007] As a preferred technical solution of the present invention, a movable water blocking plate for sealing the water inlet is slidably provided at the top of the fixed water blocking plate, two parallel slide rails are provided inside the water inlet, and a slider matching the slide rail is provided at the bottom of the movable water blocking plate.

[0008] As a preferred technical solution of the present invention, a driving mechanism for driving the movable water blocking plate to move is provided at the water guide hole, and the driving mechanism includes a water guide pipe arranged in the water guide hole and parallel to the fixed water blocking plate, and a hollow pipe column matching the water guide pipe is provided in the water guide pipe, and a traction rope is tied to one end of the hollow pipe column close to the water injection chamber, and the other end of the traction rope is fixedly connected to the topmost end of the movable water blocking plate.

[0009] As a preferred technical solution of the present invention, a plurality of limit connecting rods close to the center of the water pipe are provided at one end of the interior of the water pipe close to the first partition plate, and a limit circular block is fixedly connected to the center of the plurality of limit connecting rods. A plurality of guide groove plates are provided on the end of the water pipe away from the first partition plate, and the grooves of the guide groove plates extend to the bottom end of the inner wall of the water pipe. A sliding block that slides matching the grooves of the guide groove plates is provided on the outer wall of the hollow pipe column, and a plurality of limit retaining rings are provided at one end of the guide groove plates away from the water pipe.

[0010] As a preferred technical solution of the present invention, the topmost end of the movable water blocking plate is provided with a float that passes through the water inlet and is suspended by a suspension rope, the end of the first partition plate close to the water injection chamber is provided with a first fixed pulley located below the water pipe and guiding the traction rope, and the limiting circle block is provided with a second fixed pulley that guides the traction rope.

[0011] As a preferred technical solution of the present invention, the bottom end of the water injection port is connected to a one-way flow component.

[0012] As a preferred technical solution of the present invention, the one-way flow component includes a connecting pipe arranged at the bottom end of the water injection port, a limiting support plate is provided inside the connecting pipe, a plurality of fan-shaped water holes are provided on the limiting support plate, a reset spring is provided at the top end of the reset spring, a sealing ball is provided at the top end of the reset spring, and an arc-shaped opening that matches closely with the sealing ball is provided at the bottom end of the water injection port.

[0013] As a preferred technical solution of the present invention, a grid plate is provided at the bottom of the inner cavity of the flow control box, and a plurality of support frames for supporting the grid plates are provided at the bottom end of the flow control box.

[0014] As a preferred technical solution of the present invention, the support frame includes a fixed support plate and a movable support plate which are vertically upwardly arranged on the bottom wall of the flow control box body, and the top of the fixed support plate and the movable support plate are provided with a U-shaped clamping plate, and a fastening screw is threadedly connected to the fixed support plate, one end of the fastening screw is connected to the movable support plate via a bearing, and a wedge block is provided at the bottom end of the movable support plate, and the bottom wall of the flow control box body is provided with a wedge groove that slides and matches the wedge block.

[0015] The beneficial effects of the present invention are:

[0016] 1. Under this kind of stable pressure-bearing condition, when irrigation is carried out, in the unit water injection stage, the water entering the water injection chamber in the flow control box from the water inlet pipe flows into the lower chamber of the water injection chamber from the water inlet opened on the fixed water blocking plate, and the water inside the lower chamber of the water injection chamber flows into the interior of the underground irrigation device from the water injection port. When the water storage of the underground irrigation device reaches the set irrigation volume, the water injection flow rate gradually approaches 0, and the water level of the water injection chamber rises until the water inflow flows to the water delivery chamber through the water guide hole opened on the first partition plate and enters the water delivery stage, ensuring that the water flowing through the flow controller during the irrigation stage enters the water delivery pipeline. When the water level of the unit underground storage and irrigation device drops, the water injection flow rate is 0. After the irrigation is completed, the water pressure of the water delivery pipe is 0, the water flow control system of the flow controller adjusts itself, and the flow controller enters the water injection state, so that the water can flow evenly into each unit underground storage and irrigation device. The method of water injection and water delivery compartment control is adopted to realize the automatic control of the unit storage and water supply under the condition of stable water delivery pressure, and meet the water delivery demand of the irrigation system at the same time.

[0017] 2. In this unit flow controller under stable pressure conditions, water flows from the water inlet pipe into the water injection chamber in the flow control box, and flows into the lower chamber of the water injection chamber through the water inlet opened on the fixed water blocking plate, and then flows into the underground irrigation device through the water injection port. When the water storage of the underground irrigation device reaches the set irrigation volume, the water injection flow gradually approaches 0, and the water level in the water injection chamber rises until the inlet water flows into the inside of the water guide pipe through the water guide hole opened on the first partition plate. Under the action of the water pressure in the water injection chamber, the hollow pipe column inside the water guide pipe is pushed to move along the water guide pipe, and the sliding block provided on the outer wall of the hollow pipe column slides upward along the groove on the water guide pipe and the guide groove plate until the hollow pipe column moves upward to contact with the limit ring, and water flows from the water injection chamber through the water guide pipe into the inside of the water delivery chamber, and the hollow pipe column moves obliquely upward. When the water pump is in motion, it drives the traction rope to move. Under the guidance of the first fixed pulley and the second fixed pulley, the traction rope pulls the movable water blocking plate to move obliquely upward, and the slider at the bottom of the movable water blocking plate moves upward along the direction of the slide rail, and the movable water blocking plate seals the water inlet opened on the fixed water blocking plate. After the irrigation is completed, the water flow power of the water delivery pipeline disappears, and the remaining water in the unit flow controller is discharged downward. The gravity of the floating ball pulls the hanging rope to drive the movable water blocking plate to slide downward, and the water inlet is opened again. With the start of the next round of irrigation, the incoming water entering the water injection chamber falls through the water inlet, impacting the floating ball to generate a downward pulling force, driving the movable water blocking plate to slide further downward until the movable water blocking plate overlaps with the fixed water blocking plate, and the water surface area of ​​the water inlet reaches the maximum, a new round of water injection begins, and the water flow control system of the flow controller adjusts itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the connection structure of multiple flow control lines of the unit flow controller under stable pressure conditions of the present invention;

[0020] Figure 2 It is a structural cross-sectional view of the unit flow controller under stable pressure conditions of the present invention;

[0021] Figure 3 It is a schematic diagram of the fixed water blocking plate structure of the unit flow controller under stable pressure conditions of the present invention;

[0022] Figure 4 It is a cross-sectional view of the connection structure between the first partition plate and the water guide pipe of the unit flow controller under stable pressure conditions of the present invention;

[0023] Figure 5 It is a cross-sectional view of the connection structure of the fixed water blocking plate and the movable water blocking plate of the unit flow controller under stable pressure conditions of the present invention;

[0024] Figure 6 It is a cross-sectional view of the one-way flow component structure of the unit flow controller under stable pressure conditions of the present invention;

[0025] Figure 7 It is a schematic diagram of the connection structure of the fixed support plate and the movable support plate of the unit flow controller under stable pressure conditions of the present invention.

[0026] In the figure: 1, flow control box; 2, first partition plate; 3, second partition plate; 4, water injection chamber; 5, water delivery chamber; 6, fixed water blocking plate; 7, water inlet; 8, water guide hole; 9, water inlet pipe; 10, water outlet pipe; 11, water injection port; 12, movable water blocking plate; 13, slide rail; 14, slider; 15, driving mechanism; 16, water guide pipe; 17, hollow pipe column; 18, traction rope; 19, limit connecting rod; 20, limit round block; 2 1. Guide groove plate; 22. Sliding block; 23. Limiting ring; 24. Suspension rope; 25. Floating ball; 26. First fixed pulley; 27. Second fixed pulley; 28. One-way flow member; 29. ​​Connecting pipe; 30. Limiting support plate; 31. Water hole; 32. Reset spring; 33. Sealing ball; 34. Grid plate; 35. Support frame; 36. Fixed support plate; 37. Movable support plate; 38. Snap-in plate; 39. Fastening screw; 40. Wedge block. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the unit flow controller under stable pressure conditions of the present invention comprises a plurality of flow control boxes 1 connected in series head to tail, the top of the interior of the flow control box 1 is provided with a first partition plate 2 vertically downward, the bottom end of the first partition plate 2 is provided with a second partition plate 3 inclined downward and fixedly connected to an inner wall of one side of the flow control box 1, the inner cavity of the flow control box 1 is divided into a water injection chamber 4 and a water delivery chamber 5 by the first partition plate 2 and the second partition plate 3, the interior of the water injection chamber 4 is provided with a fixed water blocking plate 6 inclined upward and fixedly connected to the lowest end of the first partition plate 2, a concave water inlet 7 is provided on one end of the fixed water blocking plate 6 close to the first partition plate 2, a water guide hole 8 for guiding the water in the water injection chamber 4 into the water delivery chamber 5 is provided on the first partition plate 2, and a water control box 1 is provided with a water injection chamber 4 connected to the water injection chamber 4 and located above the fixed water blocking plate 6 The water inlet pipe 9 is provided on the flow control box 1, and the water outlet pipe 10 connected to the lowest end of the water delivery chamber 5 is provided. The bottom end of the flow control box 1 is connected with a plurality of water injection ports 11 for connecting to an external underground irrigation device. When irrigation is carried out, in the unit water injection stage, the water from the water inlet pipe to the water injection chamber 4 in the flow control box 1 flows into the lower chamber of the water injection chamber 4 from the water inlet 7 provided on the fixed water blocking plate 6, and the water in the lower chamber of the water injection chamber 4 flows into the underground irrigation device from the water injection port 11. When the water storage of the underground irrigation device reaches the set irrigation amount, the water injection flow rate gradually approaches 0, and the water level of the water injection chamber rises until the water flows to the water delivery chamber through the water guide hole 8 provided on the first partition plate 2, and enters the water delivery stage, ensuring that the water flowing through the flow controller in the irrigation stage enters the water delivery pipe. When the water level of the unit underground storage and irrigation device drops, the water injection flow rate is 0. After irrigation, the water pressure in the water pipe is 0, the flow controller water flow control system adjusts itself, and the flow controller enters the water injection state, so that water can flow evenly into each unit underground storage and irrigation device. The method of water injection and water delivery compartment control is adopted to realize automatic control of unit storage and water supply under stable water delivery pressure conditions, while meeting the water delivery needs of the irrigation system.

[0029] Among them, the top of the fixed water blocking plate 6 is slidably provided with a movable water blocking plate 12 for sealing the water inlet 7, the inside of the water inlet 7 is provided with two mutually parallel slide rails 13, the bottom end of the movable water blocking plate 12 is provided with a slider 14 that slides matching the slide rails 13, and the water guide hole 8 is provided with a driving mechanism 15 for driving the movable water blocking plate 12 to move, the driving mechanism 15 includes a water guide pipe 16 arranged in the water guide hole 8 and parallel to the fixed water blocking plate 6, the water guide pipe 16 is provided with a hollow pipe column 17 matching the water guide pipe 16, one end of the hollow pipe column 17 close to the water injection chamber 4 is tied with a traction rope 18, the other end of the traction rope 18 is fixedly connected to the top of the movable water blocking plate 12, and the inside of the water guide pipe 16 is close to the first partition plate 2 is provided with a plurality of limit connecting rods 19 close to the center of the water pipe 16, and the centers of the plurality of limit connecting rods 19 are fixedly connected with a limit circular block 20, and the end of the water pipe 16 away from the first partition plate 2 is provided with a plurality of guide groove plates 21, and the groove of the guide groove plate 21 extends to the bottom end of the inner wall of the water pipe 16, and the outer wall of the hollow pipe column 17 is provided with a sliding block 22 that slides matching the groove of the guide groove plate 21, and the ends of the plurality of guide groove plates 21 away from the water pipe 16 are provided with a limit retaining ring 23, and the top end of the movable water blocking plate 12 is provided with a floating ball 25 that passes through the water inlet 7 and is suspended by a suspension rope 24, and the end of the first partition plate 2 close to the water injection chamber 4 is set as a first fixed pulley 26 located below the water pipe 16 and guiding the traction rope 18, and the limit A second fixed pulley 27 for guiding the traction rope 18 is provided on the positioning circular block 20. Water flows from the water inlet pipe 9 into the water injection chamber 4 in the flow control box 1, and flows into the lower chamber of the water injection chamber 4 through the water inlet 7 opened on the fixed water blocking plate 6, and then flows into the underground irrigation device through the water injection port 11. When the water storage of the underground irrigation device reaches the set irrigation amount, the water injection flow rate gradually approaches 0, and the water level in the water injection chamber rises until the inflow water flows into the inside of the water guide pipe 16 through the water guide hole 8 opened on the first partition plate 2. Under the action of the water pressure in the water injection chamber 4, the hollow pipe column 17 inside the water guide pipe 16 is pushed to move along the water guide pipe 16, and the sliding block 22 provided on the outer wall of the hollow pipe column 17 slides upward along the groove on the water guide pipe 16 and the guide groove plate 21 until the hollow pipe column 17 moves to the bottom of the water guide pipe 16. When the hollow pipe column 17 moves upwards, it contacts the limit baffle ring 23, and water flows from the water injection chamber 4 into the water delivery chamber 5 through the water guide pipe 16. When the hollow pipe column 17 moves obliquely upwards, it drives the traction rope 18 to move. Under the guidance of the first fixed pulley 26 and the second fixed pulley 27, the traction rope 18 pulls the movable water blocking plate 12 to move obliquely upwards, and the slider 14 at the bottom of the movable water blocking plate 12 moves upwards along the direction of the slide rail 13. The movable water blocking plate 12 seals the water inlet 7 opened on the fixed water blocking plate 6. After the irrigation is completed, the water flow power of the water delivery pipeline disappears, and the remaining water in the unit flow controller is discharged downward. The gravity of the float 25 pulls the suspension rope 24 to drive the movable water blocking plate 12 to slide downward, and the water inlet 7 is opened again. With the start of the next round of irrigation, the water entering the water injection chamber 4 falls through the water inlet 7.The impact float 25 generates a downward pulling force, driving the movable water blocking plate 12 to slide further downward until the movable water blocking plate 12 overlaps with the fixed water blocking plate 6, and the water surface area of ​​the water inlet 7 reaches the maximum. A new round of water injection begins, and the flow controller water flow control system adjusts itself.

[0030] Among them, the bottom end of the water injection port 11 is connected to a one-way flow component 28, and the one-way flow component 28 includes a connecting pipe 29 arranged at the bottom end of the water injection port 11, and a limiting support plate 30 is arranged inside the connecting pipe 29, and a plurality of fan-shaped water holes 31 are opened on the limiting support plate 30, and a reset spring 32 is arranged at the top of the limiting support plate 30, and a sealing ball 33 is arranged at the top of the reset spring 32. The bottom end of the water injection port 11 is provided with an arc-shaped opening that matches and fits closely with the sealing ball 33. During irrigation, the water inside the water injection chamber 4 pushes the sealing ball 33 to move, and the reset spring 32 is compressed. The water inside the water injection chamber 4 flows into the interior of the underground irrigation device. When the underground irrigation device reaches the set irrigation amount, the sealing ball 33 is pushed to move upward, and the reset spring 32 is reset.

[0031] The bottom of the inner cavity of the flow control box 1 is provided with a grid plate 34, and the bottom end of the flow control box 1 is provided with a plurality of support frames 35 for supporting the grid plate 34, and the support frames 35 include a fixed support plate 36 and a movable support plate 37 vertically upwardly arranged on the bottom wall of the flow control box 1, and the tops of the fixed support plate 36 and the movable support plate 37 are both provided with a U-shaped clamping plate 38, and a fastening screw 39 is threadedly connected to the fixed support plate 36, and one end of the fastening screw 39 is connected to the movable support plate 37 through a bearing, and the bottom of the movable support plate 37 is connected to the movable support plate 37. A wedge block 40 is provided at the end, and a wedge groove that matches and slides with the wedge block 40 is provided on the bottom wall of the flow control box 1. The grid plate 34 is arranged to prevent the float 25 from tilting due to the impact of water flow and causing the water inlet 11 to be blocked. When fixing the grid plate 34, the grid plate 34 is placed inside two U-shaped clamping plates 38, and the fastening screw 39 is rotated. The fastening screw 39 is threadedly connected to the fixed support plate 36, and the fastening screw 39 drives the movable support plate 37 to move, and the movable support plate 37 drives the clamping plate 38 to move to fix the grid plate 34.

[0032] When working, under such stable pressure conditions, when the unit flow controller is irrigating, during the unit water injection stage, the water entering the water injection chamber 4 in the flow control box 1 from the water inlet pipe flows into the lower chamber of the water injection chamber 4 from the water inlet 7 opened on the fixed water blocking plate 6, and the water inside the lower chamber of the water injection chamber 4 flows into the interior of the underground irrigation device from the water injection port 11. When the water storage of the underground irrigation device reaches the set irrigation volume, the water injection flow rate gradually approaches 0, and the water level in the water injection chamber rises until the water flows to the water delivery chamber through the water guide hole 8 opened on the first partition plate 2 and enters the water delivery stage, ensuring that the water flowing through the flow controller during the irrigation stage enters the water delivery pipeline. When the water level of the unit underground storage and irrigation device drops, the water injection flow rate is 0. After irrigation, the water pressure in the water pipe is 0, the flow controller water flow control system adjusts itself, and the flow controller enters the water injection state, so that water can flow evenly into each unit underground storage and irrigation device. The method of water injection and water delivery compartment control is adopted to realize automatic control of unit storage and water supply under stable water delivery pressure conditions, while meeting the water delivery needs of the irrigation system.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Unit flow controller under stable pressure conditions, It is characterized in that The invention comprises a plurality of flow control boxes (1) connected in series end to end, wherein a first dividing plate (2) vertically downward is provided at the top of the flow control box (1), and a second dividing plate (3) inclined downward and fixedly connected to an inner wall of one side of the flow control box (1) is provided at the bottom of the first dividing plate (2); the inner cavity of the flow control box (1) is divided into a water injection cavity (4) and a water delivery cavity (5) by the first dividing plate (2) and the second dividing plate (3); a fixed water blocking plate (6) inclined upward and fixedly connected to the lowest end of the first dividing plate (2) is provided inside the water injection cavity (4); and a fixed water blocking plate (6) is provided at one end of the fixed water blocking plate (6) close to the first dividing plate (2). The invention relates to a water inlet (7) having a concave shape, the first partition plate (2) is provided with a water guide hole (8) for guiding water in the water injection chamber (4) into the water delivery chamber (5), the flow control box (1) is provided with a water inlet pipe (9) which is connected to the water injection chamber (4) and is located above the fixed water blocking plate (6), the flow control box (1) is provided with a water outlet pipe (10) which is connected to the lowest end of the water delivery chamber (5), the bottom end of the flow control box (1) is connected with a plurality of water injection ports (11) which are connected to an external underground irrigation device; the top end of the fixed water blocking plate (6) is slidably provided with a movable water blocking plate (12) for sealing the water inlet (7), the water inlet Two mutually parallel slide rails (13) are provided inside the fixed water blocking plate (7); a slider (14) matching and sliding with the slide rails (13) is provided at the bottom end of the movable water blocking plate (12); a driving mechanism (15) for driving the movable water blocking plate (12) to move is provided at the water guide hole (8); the driving mechanism (15) comprises a water guide pipe (16) provided in the water guide hole (8) and parallel to the fixed water blocking plate (6); a hollow pipe column (17) matching the water guide pipe (16) is provided in the water guide pipe (16); a traction rope (18) is tied to one end of the hollow pipe column (17) close to the water injection chamber (4); the other end of the traction rope (18) is connected to the movable water blocking plate (12) The water pipe (16) is fixedly connected to the top end thereof; a plurality of limit connecting rods (19) close to the center of the water pipe (16) are provided at one end of the water pipe (16) close to the first partition plate (2); a limit circular block (20) is fixedly connected to the center of the plurality of limit connecting rods (19); a plurality of guide groove plates (21) are provided at one end of the water pipe (16) away from the first partition plate (2); the grooves of the guide groove plates (21) extend to the bottom end of the inner wall of the water pipe (16); a sliding block (22) that slides in matching manner with the grooves of the guide groove plates (21) is provided on the outer wall of the hollow pipe column (17); and a limit retaining ring (23) is provided at one end of the plurality of guide groove plates (21) away from the water pipe (16);The topmost end of the movable water blocking plate (12) is provided with a floating ball (25) passing through the water inlet (7) and suspended via a suspension rope (24); the end of the first partition plate (2) close to the water injection chamber (4) is provided with a first fixed pulley (26) located below the water guide pipe (16) and guiding the traction rope (18); the limiting circular block (20) is provided with a second fixed pulley (27) guiding the traction rope (18). ; 2. The unit flow controller under stable pressure conditions according to claim 1, It is characterized in that The bottom end of the water injection port (11) is connected to a one-way flow component (28).

3. The unit flow controller under stable pressure conditions according to claim 2, It is characterized in that The one-way flow member (28) comprises a connecting pipe (29) arranged at the bottom end of the water injection port (11), a limiting support plate (30) is arranged inside the connecting pipe (29), a plurality of fan-shaped water holes (31) are provided on the limiting support plate (30), a return spring (32) is arranged at the top end of the limiting support plate (30), a sealing ball (33) is arranged at the top end of the return spring (32), and an arc-shaped opening which matches and closely contacts the sealing ball (33) is arranged at the bottom end of the water injection port (11).

4. The unit flow controller under stable pressure conditions according to claim 1, It is characterized in that A mesh plate (34) is provided at the bottom of the inner cavity of the flow control box (1), and a plurality of support frames (35) for supporting the mesh plates (34) are provided at the bottom end of the flow control box (1).

5. The unit flow controller under stable pressure conditions according to claim 4, It is characterized in that The support frame (35) comprises a fixed support plate (36) and a movable support plate (37) which are arranged vertically upward on the bottom wall of the flow control box (1), and the top of the fixed support plate (36) and the movable support plate (37) are both provided with a U-shaped clamping plate (38), and a fastening screw (39) is threadedly connected to the fixed support plate (36), and one end of the fastening screw (39) is connected to the movable support plate (37) via a bearing, and a wedge block (40) is provided at the bottom end of the movable support plate (37), and the bottom wall of the flow control box (1) is provided with a wedge groove that matches and slides with the wedge block (40).

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