Adjustable water-saving valve for multi-stage pipeline and use method of adjustable water-saving valve

Abstract

The invention provides an adjustable water-saving valve for a multi-stage pipeline and a using method of the adjustable water-saving valve, and belongs to the technical field of valves.The adjustable water-saving valve comprises a shell formed by buckling a front cover and a rear cover front and back, the shell comprises a flow channel penetrating front and back in the length direction, and the adjustable water-saving valve further comprises T-shaped limiting grooves formed in the upper side and the lower side of the flow channel in the shell; a valve element is arranged in the shell flow channel and is in an I shape. According to the scheme, the valve element, the limiting pipe, the first water outlet pipe, the sleeve and the second water outlet pipe are arranged, the opening degree of the valve element and the rotating angle of the first water outlet pipe are in positive correlation, and in the small-flow state, water outlet is achieved only through the second water outlet pipe; the water flow generated under the dispersion action of the filter screen has a good washing effect, and a good cleaning effect can be achieved in actual use, so that the water consumption for washing is saved, and the water-saving effect is achieved.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to an adjustable multi-stage pipeline water-saving valve and a method of using the same. Background Art

[0002] The water supply project includes water pipelines, water distribution networks, pumping stations, water towers and other ancillary facilities. In order to ensure the normal operation of the water supply network, the ancillary facilities are connected by numerous pipelines. In order to ensure the operation and maintenance of multi-stage pipelines, valves are installed in the multi-stage pipelines. A water-saving valve in the prior art, with the announcement number CN114263758B, can adjust the water outlet angle by rotating the universal ball 701, and can also adjust the water flow shape of the outlet by rotating the water flow regulator 704 in the adjustable water-saving device, so that the same volume of water can play the same role as more water, thereby achieving the purpose of saving water; However, when the device is in use, when the opening of the spherical valve body is small relative to the valve seat body, the overall flow rate of the valve is small and the flow rate is slow. At this time, the water flow regulation effect of the water flow regulator is poor, and it is difficult to meet the flushing and flushing needs, and the water saving effect needs to be improved. Summary of the invention

[0003] In view of this, the purpose of this application is to provide an adjustable multi-stage water-saving valve for pipelines and a method of using the same, so as to improve the water discharge effect of the valve under low flow conditions and improve the water-saving capacity.

[0004] In order to solve the above technical problems, this application provides the following technical solutions: An adjustable multi-stage water-saving valve for pipelines, comprising a shell formed by front cover and rear cover buckled together, the shell comprising a flow channel penetrating front to back along the length direction, and also comprising "T"-shaped limit grooves on both upper and lower sides of the internal flow channel of the shell, a valve core is arranged in the flow channel of the shell, the valve core is in the shape of an "I", the horizontal part of the valve core is arranged in the limit groove of the shell, a water outlet pipe 1 is arranged in the water outlet side opening of the shell, a sleeve is arranged inside the water outlet pipe 1, a water outlet pipe 2 is penetrated inside the sleeve, the end of the water outlet pipe 2 is connected to a limit pipe, and the limit pipe is clamped in the groove of the valve core side wall; The outer side of the limit tube is sleeved with a first gear ring, the outer side of the valve core is provided with a second gear ring, and a transmission relationship is established between the first gear ring and the second gear ring; A filter screen is arranged in the outlet side opening of the first outlet pipe, an annularly distributed water outlet is arranged on the outer circumference of the sleeve, and an annularly distributed water outlet is arranged on the outer circumference of the second outlet pipe; A valve stem is passed through the top of the shell, and one end of the valve stem that passes through the top of the shell is embedded in the top of the valve core.

[0005] Preferably, the valve core includes limiting portions in a cylindrical structure at both ends thereof, and the limiting portions are embedded in a horizontal portion of a limiting groove of the housing.

[0006] Preferably, a through hole perpendicular to the central axis is opened in the middle of the valve core, and a "cross"-shaped guide plate is arranged in the through hole in the middle of the valve core; The diameter of the through hole in the middle of the valve core is the same as the inner diameter of the limit tube, and the limit tube abuts against the side wall of the valve core; A positioning ring is sleeved on the middle part of the valve core, and the positioning ring is arranged on the top of the first gear ring.

[0007] Preferably, a slide groove is provided on the top of the valve core, the slide groove is arranged along the flow channel of the shell, and the valve stem is clamped in the slide groove on the top of the valve core.

[0008] Preferably, a water outlet hole is provided at the end of the limiting tube, a groove is provided at the edge of the end of the limiting tube, and a sealing ring 1 is clamped inside the groove; The end of the water outlet pipe 1 is provided with a water outlet hole which is the same as that of the limiting pipe, and the water outlet pipe 1 is arranged to fit the end of the limiting pipe.

[0009] Preferably, a partition bar is provided inside the filter screen, the partition bar is annular, the size of the partition bar is the same as the size of the sleeve, and the partition bar is arranged to fit the opening of the sleeve.

[0010] Preferably, the outer side wall of the water outlet pipe 1 is provided with threads, and the water outlet pipe 1 is fastened to the shell by threads.

[0011] Preferably, the water inlet side of the shell is connected with a limit joint, the limit joint is clamped in the side wall groove of the valve core, and an O-ring is provided on the side of the limit joint facing the valve core.

[0012] Preferably, a sleeve is provided at the top center of the housing, the sleeve is sleeved on the outside of the valve stem, a groove is provided on the top surface of the sleeve, a positioning plate is embedded in the groove, and a positioning hole is provided on the surface of the positioning plate; A positioning rod is passed through the side wall of the valve stem, and a spring is arranged between the positioning rod and the valve stem.

[0013] On the other hand, the present application provides a method for using an adjustable multi-stage pipeline water-saving valve: S1: After the device is assembled as a whole, install the housing in the pipeline, and rotate the valve stem to drive the valve core to turn to open and close the water flow; S2: During the rotation of the valve core, the gear ring 2 drives the gear ring 1 to rotate, and the limit pipe drives the outlet pipe 2 to rotate. The water in the limit pipe enters the outlet pipe 1 to increase the flow rate and then sprays out; S3: The opening angle of the valve core increases, and the through hole on the outer wall of the second outlet pipe coincides with the through hole on the outer wall of the sleeve, so that the water can flow into the first outlet pipe. The water flows through the first outlet pipe and is sprayed out at a reduced flow rate, achieving a water-saving effect. S4: The water flow sprayed out through the outlet pipe is dispersed by the filter, which enriches the bubbles in the water flow, improves the cleaning ability of the water flow, and achieves a water-saving effect. Compared with the prior art, this application has at least the following beneficial effects:

[0014] In the above scheme, by setting the valve core, the limit pipe, the water outlet pipe one, the sleeve and the water outlet pipe two, the opening of the valve core is positively correlated with the rotation angle of the water outlet pipe one. When in a small flow state, water is only discharged through the water outlet pipe two. Since the diameter of the water outlet pipe two is smaller than the limit pipe, the water flow in the water outlet pipe two to the filter screen has a higher flow rate. The water flow generated by the dispersion effect of the filter screen makes this part of the water flow have a good flushing effect. In actual use, a good cleaning effect can be achieved, thereby saving the water used for flushing and achieving a water-saving effect.

[0015] In the above scheme, by setting the limit tube, the water outlet pipe and the valve core, the limit tube constrains the space for the valve core to move along the axial direction, has a good limiting effect, can maintain the stability of the valve core position, and reduce the sealing failure caused by wear.

[0016] In the above scheme, by setting water outlet pipe 1 and the shell, water outlet pipe 1 and the shell are connected by a thread. Under the action of the pre-tightening force of the thread, water outlet pipe 1 can compress the limiting tube, so that the limiting tube further squeezes the valve core, and at the same time limits the activity space of the valve core, thereby reducing the poor sealing caused by the shaking of the valve core.

[0017] In the above scheme, by setting a limit joint and a shell, the limit joint is designed on the opposite side of the limit tube, and the limit joint also has a limiting effect on the valve core. When the valve core is closed to achieve the flow cut-off effect, the limit joint fits against the outer peripheral surface of the valve core to achieve a sealing effect. Combined with the floating design between the valve core and the valve stem, under the extrusion force of the limit tube, the valve core moves in the opposite direction of the medium pressure, thereby achieving a close fit between the valve core and the limit joint, and achieving a better sealing effect under the action of pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0019] Figure 1 It is a schematic diagram of the overall structure in this application; Figure 2 It is a schematic diagram of the overall cross-sectional structure in this application; Figure 3 This is a schematic diagram of the valve core structure in this application; Figure 4 This is a schematic diagram of the structure of the limiting part in this application; Figure 5 This is a schematic diagram of the structure of the water outlet pipe in this application Figure 6 Schematic diagram of the limit tube structure in this application Figure 7 Schematic diagram of the valve stem structure in this application Figure 8 For this application Figure 2 Enlarged structural diagram of point A in the middle [Reference Signs] 1. Shell; 101. Valve stem; 102. Sleeve; 103. Positioning plate; 104. Positioning rod; 105. Spring; 2. Valve core; 201. Gear ring 2; 202. Limiting part; 203. Drain plate; 204. Positioning ring; 3. Outlet pipe 1; 4. Sleeve; 5. Outlet pipe 2; 6. Positioning pipe; 601. Gear ring 1; 602. Sealing ring 1; 7. Filter; 701. Separating strip; 8. Positioning joint. DETAILED DESCRIPTION

[0020] The following is a detailed description of an adjustable multi-stage pipeline water-saving valve and its use method provided by the present application in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present application.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 An adjustable multi-stage water-saving valve for pipelines is shown, and the embodiment of the present application provides a shell 1 formed by front cover and rear cover buckled together, the shell 1 includes a flow channel that runs through front and back along the length direction, and also includes "T"-shaped limit grooves on both upper and lower sides of the internal flow channel of the shell 1, a valve core 2 is arranged in the flow channel of the shell 1, the valve core 2 is in the shape of an "I", the horizontal part of the valve core 2 is arranged in the limit groove of the shell 1, a water outlet pipe 1 3 is arranged in the water outlet side opening of the shell 1, a sleeve 4 is arranged inside the water outlet pipe 1 3, a water outlet pipe 2 5 is penetrated inside the sleeve 4, and the end of the water outlet pipe 2 5 is connected to the limit pipe 6, and the limit pipe 6 is clamped in the groove of the side wall of the valve core 2; The outer side of the limit tube 6 is sleeved with a gear ring 1 601, and the outer side of the valve core 2 is provided with a gear ring 201, and a transmission relationship is established between the gear ring 1 601 and the gear ring 2 201; A filter screen 7 is arranged in the outlet side opening of the outlet pipe 1 3, an annularly distributed outlet is opened on the outer peripheral surface of the sleeve 4, and an annularly distributed outlet is opened on the outer peripheral surface of the outlet pipe 2 5; A valve stem 101 is provided at the top of the housing 1, and one end of the valve stem 101 that passes through the top of the housing 1 is embedded in the top of the valve core 2; The housing 1 is assembled in the water supply pipeline. The valve stem 101 is used to adjust the opening of the valve core 2 in the flow channel of the housing 1 to adjust the flow rate on the water outlet side of the flow channel of the housing 1. The opening of the valve core 2 is proportional to the rotation angle of the valve stem 101. The valve core 2 is a cylindrical structure and can rotate smoothly inside the housing 1. At the same time, the valve core 2 is limited by the limiting groove of the housing 1, and the space for the valve core 2 to move up and down is limited, thereby ensuring the accuracy of the position of the valve core 2 relative to the housing 1 and reducing the water flow resistance. During the process of the valve core 2 being rotated and opened, the water flow increases from small to large. When the flow rate is small, the water in the valve core 2 flows through the limit tube 6 into the outlet pipe 2 5. Since the diameter of the limit tube 6 is larger than that of the outlet pipe 2 5, according to the principle of fluid mechanics, when the diameter increases, the flow rate decreases; when the diameter decreases, the flow rate increases, so that the water flow in the outlet pipe 2 5 flowing to the filter screen 7 has a higher flow rate. Therefore, under the condition of small flow, the water flow generated by the dispersion effect of the filter screen 7 makes this part of the water flow have a good flushing effect, and a good cleaning effect can be achieved in actual use, thereby saving the amount of water used for flushing and achieving a water-saving effect. The valve core 2 drives the gear ring 201 to rotate, and drives the gear ring 1 601 to rotate, so that the limit pipe 6 drives the water outlet pipe 2 5 to rotate, until the through hole on the outer wall of the water outlet pipe 2 5 coincides with the through hole on the outer wall of the sleeve 4, so that the water outlet pipe 1 3 and the water outlet pipe 2 5 can discharge water at the same time, realizing water use under a large flow state.

[0022] The filter screen 7 installed at the end of the water outlet pipe 3 has the effect of dispersing the water flow, can form distributed water outlet, and has a good flushing effect under a large flow state.

[0023] In this embodiment, Figure 2-Figure 4 As shown, the valve core 2 includes a cylindrical limiting portion 202 at both ends thereof, and the limiting portion 202 is embedded in the horizontal portion of the limiting groove of the housing 1; The limiting parts 202 at both ends of the valve core 2 include an arc-shaped outer peripheral surface, which has good limiting and guiding effects. The cooperation between the limiting parts 202 and the limiting grooves of the housing 1 enables the valve core 2 to have stable rotation performance, is not easy to loosen, is not easy to misalign, and has strong pressure resistance; The limiting portion 202 has a flat end surface, and the end surface of the limiting portion 202 further constrains the space for the valve core 2 to move along the axial direction, with a good limiting effect. The limiting portion 202 and the housing 1 are in a sliding fit, with a compact and stable structure, good water flow on-off effect and good sealing effect.

[0024] like Figure 2-Figure 4 As shown, a through hole perpendicular to the central axis is opened in the middle of the valve core 2, and a "cross"-shaped guide plate 203 is arranged in the through hole in the middle of the valve core 2; The diameter of the through hole in the middle of the valve core 2 is the same as the inner diameter of the limit tube 6, and the limit tube 6 abuts against the side wall of the valve core 2; The middle part of the valve core 2 is sleeved with a positioning ring 204, and the positioning ring 204 is arranged on the top of the gear ring 1 601; The guide plate 203 inside the valve core 2 has the effect of dispersing the water flow and can guide the water flow to flow to the limit pipe 6 and the water outlet pipe 2 5 to ensure the water outlet effect; When the opening of the valve core 2 reaches the opening limit, the water flow can be smoothly ejected from the valve core 2 into the limit tube 6, so that the water flow is stable; The positioning ring 204 is slidably matched with the top of the gear ring 601, so that the limiting tube 6 can limit the valve core 2, limit the activity space of the valve core 2, and keep the position of the valve core 2 stable.

[0025] like Figure 2-Figure 4 As shown, a slide groove is provided at the top of the valve core 2, and the slide groove is arranged along the flow channel direction of the housing 1, and the valve stem 101 is clamped in the slide groove at the top of the valve core 2; The valve core 2 can be a floating assembly, and the valve core 2 can move toward the outlet direction under the pressure of the medium in the flow channel, so as to achieve a close fit between the valve core 2 and the housing 1, and a better sealing effect can be achieved under the action of pressure.

[0026] like Figure 5 and Figure 6 As shown, a water outlet is provided at the end of the limiting tube 6, a groove is provided at the edge of the end of the limiting tube 6, and a sealing ring 602 is clamped inside the groove; The end of the water outlet pipe 1 3 is provided with a water outlet hole identical to the position limiting pipe 6, and the water outlet pipe 1 3 is arranged to fit the end of the position limiting pipe 6; As the opening of the valve core 2 increases, the outer peripheral surface of the water outlet pipe 2 5 coincides with the through hole on the outer peripheral surface of the sleeve 4 to cope with the water outlet demand under a large flow state. In response to this water demand, a through hole connected to the end of the limit pipe 6 and the end of the water outlet pipe 1 3 is designed. The opening of the through hole is positively correlated with the opening of the valve core 2, which can cope with a high flow state. The water outlet pipe 1 3 is clamped in the step groove between the water outlet pipe 2 5 and the limiting pipe 6 , and the water outlet pipe 1 3 is connected to the shell 1 , the position between the water outlet pipe 1 3 and the water outlet pipe 2 5 is kept stable and accurate, and the overall structure is compact.

[0027] like Figure 2 , Figure 5 and Figure 6As shown, a separator bar 701 is provided inside the filter screen 7. The separator bar 701 is annular. The size of the separator bar 701 is the same as that of the sleeve 4. The separator bar 701 is arranged to fit the opening of the sleeve 4. When the opening of the valve core 2 is not enough to allow water to flow out of the water outlet pipe 1 3, water only flows out through the water outlet pipe 2 5. The medium sprayed out of the water outlet pipe 2 5 is constrained by the dividing strip 701 when passing through the filter screen 7, reducing the radial flow of the medium along the filter screen 7, so that the medium can stably pass through the filter screen 7, thereby ensuring the water outlet effect.

[0028] like Figure 5 and Figure 6 As shown, the outer wall of the water outlet pipe 1 3 is provided with threads, and the water outlet pipe 1 3 is fastened to the housing 1 through threads; The water outlet pipe 1 3 is connected to the housing 1 by a thread. Under the pre-tightening force of the thread, the water outlet pipe 1 3 can press the limiting pipe 6, so that the limiting pipe 6 further squeezes the valve core 2, so that the gear ring 1 601 and the gear ring 2 201 maintain a stable meshing state, and at the same time limit the activity space of the valve core 2, reducing the situation of poor sealing caused by the shaking of the valve core 2; And because the valve core 2 and the valve stem 101 are of a floating design, under the extrusion force of the limit tube 6, the pressure of the medium on the valve core 2 can be resisted, so that the valve core 2 moves in the opposite direction of the medium pressure, thereby achieving a close fit between the valve core 2 and the housing 1, and achieving a better sealing effect under the action of pressure.

[0029] like Figure 2 As shown, the water inlet side of the housing 1 is connected to a limit joint 8, the limit joint 8 is clamped in the side wall groove of the valve core 2, and an O-ring is provided on the side of the limit joint 8 facing the valve core 2; The limit joint 8 is designed on the opposite side of the limit tube 6, and the limit joint 8 also has a limit effect on the valve core 2. When the valve core 2 is closed to achieve the flow cut-off effect, the limit joint 8 fits the outer peripheral surface of the valve core 2 to achieve a sealing effect; With the floating design between the valve core 2 and the valve stem 101, under the extrusion force of the limit tube 6, the valve core 2 moves in the opposite direction of the medium pressure, so that the valve core 2 and the limit joint 8 are closely fitted, and a better sealing effect can be achieved under the action of pressure; An O-ring is arranged at the position of the limit joint 8 to improve the sealing effect and reduce the wear of the valve core 2 and the limit joint 8. At the same time, the limit joint 8 can adopt a three-way or four-way joint to meet the connection requirements of multi-stage pipelines.

[0030] like Figure 2 , Figure 7 and Figure 8As shown, a sleeve 102 is provided at the top center of the housing 1, and the sleeve 102 is sleeved on the outside of the valve stem 101. A groove is provided on the top surface of the sleeve 102, and a positioning plate 103 is embedded in the groove. A positioning hole is provided on the surface of the positioning plate 103. A positioning rod 104 is provided through the side wall of the valve stem 101, and a spring 105 is provided between the positioning rod 104 and the valve stem 101; When the valve stem 101 rotates, the positioning rod 104 is driven to move, and the positioning rod 104 moves in the groove at the end of the sleeve 102 to limit the opening angle of the valve stem 101; The positioning rod 104 is embedded in the positioning hole on the surface of the positioning plate 103 under the pressure of the spring 105. The end of the positioning rod 104 is in a hemispherical shape, so there is no need to deliberately control the position of the positioning rod 104. The surface of the positioning plate 103 is designed with multiple positioning holes. As the positioning rod 104 moves, it moves in different positioning holes one by one, so that the valve stem 101 has an obvious damping feeling during rotation, thereby reminding the user to open the angle and maintain the habit of saving water.

[0031] Furthermore, a method for using an adjustable multi-stage pipeline water-saving valve is as follows: S1: After the device is assembled as a whole, the housing 1 is installed in the pipeline, and the valve core 2 is driven to rotate by rotating the valve stem 101 to turn the water flow on and off; S2: During the rotation of the valve core 2, the gear ring 201 drives the gear ring 1 601 to rotate, and the limit pipe 6 drives the outlet pipe 2 5 to rotate. The water in the limit pipe 6 enters the outlet pipe 1 3 to increase the flow rate and then sprays out; S3: The opening angle of the valve core 2 increases, and the through hole on the outer wall of the water outlet pipe 2 5 coincides with the through hole on the outer wall of the sleeve 4, so that the water can flow into the inside of the water outlet pipe 1 3. When the water flows through the water outlet pipe 1 3, the flow rate is reduced and the water is sprayed out, which has a water-saving effect; S4: The water flow sprayed out through the water outlet pipe 3 is dispersed by the filter screen 7, which enriches the bubbles in the water flow, improves the cleaning ability of the water flow, and achieves a water-saving effect.

Claims

1. An adjustable multi-stage water-saving valve for a pipeline, comprising a housing (1) formed by a front cover and a rear cover buckled together in a front-to-back manner, wherein the housing (1) comprises a flow channel extending in a front-to-back direction along a length direction, characterized in that: It also includes a "T"-shaped limiting groove on both upper and lower sides of the internal flow channel of the shell (1), a valve core (2) is arranged in the flow channel of the shell (1), the valve core (2) is in the shape of an "I", the horizontal part of the valve core (2) is arranged in the limiting groove of the shell (1), a water outlet pipe (3) is arranged in the water outlet side opening of the shell (1), a sleeve (4) is arranged inside the water outlet pipe (3), a water outlet pipe (5) is passed through the sleeve (4), the end of the water outlet pipe (5) is connected to the limiting pipe (6), and the limiting pipe (6) is clamped in the groove of the side wall of the valve core (2); The outer side of the limit tube (6) is sleeved with a first gear ring (601), and the outer side of the valve core (2) is provided with a second gear ring (201), and a transmission relationship is established between the first gear ring (601) and the second gear ring (201); A filter screen (7) is provided in the water outlet opening of the first water outlet pipe (3), an annularly distributed water outlet is provided on the outer peripheral surface of the sleeve (4), and an annularly distributed water outlet is provided on the outer peripheral surface of the second water outlet pipe (5); A valve stem (101) is provided on the top of the shell (1); one end of the valve stem (101) passes through the top of the shell (1) and is embedded in the top of the valve core (2).

2. The adjustable multi-stage water-saving valve for pipelines according to claim 1 is characterized in that: The valve core (2) comprises limiting portions (202) of cylindrical structure at both ends thereof, and the limiting portions (202) are embedded in the horizontal portion of the limiting groove of the housing (1).

3. The adjustable multi-stage pipeline water-saving valve according to claim 2 is characterized in that: A through hole perpendicular to the central axis is provided in the middle of the valve core (2), and a cross-shaped guide plate (203) is provided in the through hole in the middle of the valve core (2); The diameter of the through hole in the middle of the valve core (2) is the same as the inner diameter of the limit tube (6), and the limit tube (6) abuts against the side wall of the valve core (2); A positioning ring (204) is sleeved on the middle part of the valve core (2), and the positioning ring (204) is arranged on the top of the first gear ring (601).

4. The adjustable multi-stage pipeline water-saving valve according to claim 3 is characterized in that: The top of the valve core (2) is provided with a slide groove, the slide groove is arranged along the flow channel direction of the housing (1), and the valve stem (101) is clamped in the slide groove at the top of the valve core (2).

5. The adjustable multi-stage pipeline water-saving valve according to claim 1 is characterized in that: The end of the limiting tube (6) is provided with a water outlet hole, the edge of the end of the limiting tube (6) is provided with a groove, and a sealing ring (602) is clamped inside the groove; The end of the water outlet pipe 1 (3) is provided with a water outlet hole identical to that of the position limiting pipe (6), and the water outlet pipe 1 (3) is arranged to fit the end of the position limiting pipe (6).

6. The adjustable multi-stage pipeline water-saving valve according to claim 1 is characterized in that: A dividing bar (701) is arranged inside the filter screen (7); the dividing bar (701) is annular in shape; the size of the dividing bar (701) is the same as the size of the sleeve (4); and the dividing bar (701) is arranged to fit the opening of the sleeve (4).

7. The adjustable multi-stage water-saving valve for pipelines according to claim 1, characterized in that: The outer side wall of the water outlet pipe 1 (3) is provided with threads, and the water outlet pipe 1 (3) and the housing (1) are fastened by the threads.

8. The adjustable multi-stage water-saving valve for pipelines according to claim 1, characterized in that: The water inlet side of the housing (1) is connected to a limit joint (8), the limit joint (8) is clamped in a groove on the side wall of the valve core (2), and an O-ring is provided on the side of the limit joint (8) facing the valve core (2).

9. The adjustable multi-stage water-saving valve for pipelines according to claim 1, characterized in that: A sleeve (102) is provided at the top center of the housing (1), the sleeve (102) being sleeved on the outside of the valve stem (101), a groove being provided on the top surface of the sleeve (102), a positioning plate (103) being embedded in the interior of the groove, and a positioning hole being provided on the surface of the positioning plate (103); A positioning rod (104) is provided through the side wall of the valve stem (101), and a spring (105) is provided between the positioning rod (104) and the valve stem (101).

10. The method for using the adjustable multi-stage pipeline water-saving valve according to any one of claims 1 to 9, characterized in that: S1: After the device is assembled as a whole, the housing (1) is installed in the pipeline, and the valve stem (101) is rotated to drive the valve core (2) to rotate, thereby turning on and off the water flow; S2: During the rotation of the valve core (2), the second gear ring (201) drives the first gear ring (601) to rotate, and the limit tube (6) drives the second water outlet pipe (5) to rotate, and the water in the limit tube (6) enters the first water outlet pipe (3) and is ejected after the flow rate is increased; S3: the opening angle of the valve core (2) increases, the through hole on the outer wall of the second outlet pipe (5) coincides with the through hole on the outer wall of the sleeve (4), so that water can flow into the first outlet pipe (3). When the water flows through the first outlet pipe (3), the flow rate is reduced and the water is sprayed out, achieving a water-saving effect; S4: The water flow sprayed out through the water outlet pipe 1 (3) is dispersed by the filter screen (7), thereby enriching the bubbles in the water flow, improving the cleaning ability of the water flow, and achieving a water-saving effect.

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