CN113551041B - Multipurpose double-flow valve - Google Patents

Abstract

The invention relates to a multifunctional double-flow valve, which comprises a lower pipeline, a lower valve and a valve body, wherein the lower pipeline is used for realizing backflow drainage; the lower inner pipe is sleeved in the lower pipeline, and a gap is reserved between the outer wall of the lower inner pipe and the inner wall of the lower pipeline; the bottom end of the upper pipeline is sleeved in the lower pipeline and slides in the lower pipeline, and the outer side wall of the upper pipeline is abutted against the inner side wall of the opening at the top of the lower pipeline; one end of the lower inner pipe is arranged in the upper pipeline in a penetrating way and is attached to the inner side wall of the opening at the bottom of the upper pipeline; the top of the upper pipeline is provided with a leakage groove, the bottom of the leakage groove is communicated with the interior of the upper pipeline, a valve body is arranged in the leakage groove in a telescopic mode, when the valve body is located in the leakage groove, the valve body is attached to the inner wall of the leakage groove, and the lower inner pipe drives the valve body to slide in the leakage groove; the outer side wall of the lower inner pipe is provided with the flowing groove, and the water supply and drainage device has the effects of directly realizing water supply and drainage, integrating two purposes and being more convenient to use.

Description

Multipurpose double-flow valve

Technical Field

The invention relates to the technical field of valves, in particular to a multipurpose double-flow valve.

Background

A valve is a plumbing fixture used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. The valve can also be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metal, radioactive media and the like.

The existing water pump is a one-way channel, fluid can be conveyed to the other end from one end only, when the fluid is required to flow back, a pipeline needs to be additionally arranged, the use is inconvenient, and resources are wasted.

Disclosure of Invention

Therefore, the invention provides the multipurpose double-flow valve to solve the technical problems that the water pump can only realize a one-way channel, can not return fluid and is inconvenient to use.

A multi-functional dual flow valve comprising:

the lower pipeline is used for realizing backflow drainage;

the lower inner pipe is sleeved in the lower pipeline, and a gap is reserved between the outer wall of the lower inner pipe and the inner wall of the lower pipeline;

the bottom end of the upper pipeline is sleeved in the lower pipeline and slides in the lower pipeline, and the outer side wall of the upper pipeline is abutted against the inner side wall of the opening at the top of the lower pipeline;

one end of the lower inner pipe is arranged in the upper pipeline in a penetrating way and is attached to the inner side wall of the opening at the bottom of the upper pipeline;

the top of the upper pipeline is provided with a leakage groove, the bottom of the leakage groove is communicated with the inside of the upper pipeline, a valve body is arranged in the leakage groove in a telescopic mode, when the valve body is located in the leakage groove, the valve body is attached to the inner wall of the leakage groove, and the lower inner pipe drives the valve body to slide in the leakage groove;

the outer side wall of the lower inner pipe is provided with a flow groove, and when the flow groove of the lower inner pipe moves into the opening at the bottom of the upper pipeline, a lower water return channel is formed between the flow groove and the inner side wall of the upper pipeline as well as the inner wall of the lower pipeline.

Further, it is equipped with the piston that is used for leading to water to slide in the upper tube way, set up the connecting rod between valve body and the piston, the connecting rod slides and sets up in the intercommunication mouth of small opening and upper tube way, when the piston is located the lower pipeline bottom, the piston is contradicted with upper tube way bottom inside wall, inner tube top and piston are contradicted down.

Furthermore, a plurality of water through holes are formed in the piston, and the water through holes are uniformly distributed on the top of the piston.

Further, the connecting rod is sleeved with a retraction spring, one end of the retraction spring is abutted to the piston, and the other end of the retraction spring is abutted to the bottom of the leakage groove body.

Furthermore, a plurality of vent grooves are formed in the inner side wall of the leakage groove, and the vent grooves are arranged around the inner side wall of the leakage groove.

Furthermore, a plurality of reinforcing ribs are arranged between the leakage groove body and the inner side wall of the upper pipeline.

Furthermore, an elastic limiting ring is arranged on the outer side wall of the piston, a limiting groove matched with the limiting ring is formed in the inner side wall of the opening at the bottom of the upper pipeline, and the limiting ring is located in the limiting groove and attached to the inner wall of the limiting groove.

Furthermore, a spiral conveying plate is arranged between the bottom of the lower pipeline and the bottom of the lower inner pipe, and the spiral conveying plate is arranged around the inner side wall of the lower pipeline.

Further, the flow groove on the lower inner pipe is arranged around the side wall of the lower inner pipe.

Furthermore, a plurality of grooves are formed in the side wall of the top of the valve body, fixing blocks are arranged on the inner wall of the leakage groove towards the grooves and are arranged in the grooves in a sliding mode.

The technical scheme of the invention has the following advantages:

1. the multifunctional double-flow valve comprises a lower pipeline, a lower valve body and a lower valve body, wherein the lower pipeline is used for realizing backflow drainage; the lower inner pipe is sleeved in the lower pipeline, and a gap is reserved between the outer wall of the lower inner pipe and the inner wall of the lower pipeline; the bottom end of the upper pipeline is sleeved in the lower pipeline and slides in the lower pipeline, and the outer side wall of the upper pipeline is abutted against the inner side wall of the opening at the top of the lower pipeline; one end of the lower inner pipe is arranged in the upper pipeline in a penetrating way and is attached to the inner side wall of the opening at the bottom of the upper pipeline; the top of the upper pipeline is provided with a leakage groove, the bottom of the leakage groove is communicated with the inside of the upper pipeline, a valve body is arranged in the leakage groove in a telescopic mode, when the valve body is located in the leakage groove, the valve body is attached to the inner wall of the leakage groove, and the lower inner pipe drives the valve body to slide in the leakage groove; the outer side wall of the lower inner pipe is provided with a flow groove, when the flow groove of the lower inner pipe moves into an opening at the bottom of an upper pipeline, a lower water backflow channel is formed between the flow groove and the inner side wall of the upper pipeline and the inner wall of a lower pipeline, when the valve is used, the fluid can enter the lower inner pipe at the moment, the fluid is conveyed through the lower inner pipe, at the moment, in order to supply water, the lower pipeline is pushed to slide in the upper pipeline, at the moment, the lower pipeline drives the lower inner pipe to move, so that the valve body is pushed away from a leakage groove, at the moment, the fluid can enter the upper pipeline from the lower inner pipe, and enters a container at the upper side through the leakage groove on the upper pipeline, the fluid is conveyed, when the water backflow is needed, the lower pipeline is moved again, the lower pipeline drives the lower pipeline to move again, the position of the upper pipeline is reached to the position of the opening of the flow groove of the upper pipeline, so that the outer side wall of the lower inner pipe and the inner side wall of the upper pipeline do not conflict, thereby forming a lower backflow channel, the lower pipe can reduce the efficiency of an intelligent backflow process, the intelligent backflow device, the efficiency of the lower pipeline, and the intelligent backflow device can be reduced, and the efficiency of the intelligent backflow process, and the intelligent backflow device can be realized, and the efficiency of the intelligent backflow process, and the intelligent backflow process can be more reduced, and the intelligent backflow device can be realized, and the intelligent backflow process.

2. According to the multifunctional double-flow valve provided by the invention, the piston is provided with the plurality of water through holes, the water through holes are uniformly distributed at the top of the piston, and through the arrangement of the water through holes, when fluid in the lower inner pipe needs to be introduced into the upper pipeline, the lower pipeline is pushed to push the piston and the valve body to move when water is supplied, at the moment, the valve body is separated from the side wall of the leakage groove, so that the fluid flows out from a gap between the valve body and the inner wall of the leakage groove, at the moment, due to the arrangement of the water through holes, the fluid can enter the upper pipeline through the water through holes, and the fluid is conveniently conveyed.

3. According to the multifunctional double-flow valve provided by the invention, the connecting rod is sleeved with the retraction spring, one end of the retraction spring is abutted against the piston, the other end of the retraction spring is abutted against the bottom of the leakage groove body, when the lower pipeline is pushed to drive the valve body to be separated from the leakage groove, the retraction spring in an initial state is in a compressed state due to the fact that the distance between the piston and the bottom of the leakage groove is shortened, the retraction spring in the compressed state can provide a reset pressure value for the valve body, and therefore when water feeding or water discharging is completed, the valve body can be retracted to the initial position at the moment, and therefore the valve is more convenient and faster to use.

4. According to the multifunctional double-flow valve provided by the invention, the inner side wall of the leakage groove is provided with the plurality of vent grooves, the vent grooves are arranged around the inner side wall of the leakage groove, and due to the arrangement of the vent grooves, when the valve body needs to be closed after fluid flows into a container from an upper pipeline through the leakage groove, the fluid can play a role of buffering in the vent grooves, so that the formation of water hammer in the leakage groove is reduced, and the hidden danger of the valve body when the valve body is closed is avoided.

5. According to the multifunctional double-flow valve provided by the invention, the plurality of reinforcing ribs are arranged between the groove body of the leakage groove and the inner side wall of the upper pipeline, and the groove body of the leakage groove is more stable in structure in the upper pipeline through the arrangement of the reinforcing ribs.

6. According to the multifunctional double-flow valve provided by the invention, the elastic limiting ring is arranged on the outer side wall of the piston, the limiting groove matched with the limiting ring is arranged on the inner side wall of the opening at the bottom of the upper pipeline, and the limiting ring is positioned in the limiting groove and is attached to the inner wall of the limiting groove, so that a sealing effect can be achieved, the sealing effect between the piston and the inner side wall of the opening of the upper pipeline is good, and the phenomenon that fluid in the lower inner pipe flows out from a gap between the piston and the upper pipeline due to poor sealing property to influence the water feeding and discharging effects is avoided.

7. According to the multifunctional double-flow valve provided by the invention, the spiral conveying plate is arranged between the lower pipeline and the bottom of the lower inner pipe, the spiral conveying plate is arranged around the inner side wall of the lower pipeline, and the spiral conveying plate is arranged, so that when the fluid flows back into the lower pipeline, the fluid can be guided and conveyed by the spiral conveying plate, the flow rate of the backflow of the water is improved, and the backflow of the water is quicker.

8. The multifunctional double-flow valve provided by the invention has the advantages that the side wall of the top of the valve body is provided with the plurality of grooves, the inner wall of the leakage groove is provided with the fixing blocks towards the grooves, the fixing blocks are arranged in the grooves in a sliding manner, when the lower pipeline is pushed to move so as to drive the valve body to move, the fixing blocks are firstly separated from the grooves at the beginning of movement, and at the moment, fluid in the upper pipeline enters the leakage groove and then is drained through the grooves at first, so that the buffering effect is achieved, the pressure is balanced, the valve body is pushed step by step, the fluid flows through the grooves, the stability in draining is ensured, and the damage to equipment caused by the unbalanced pressure is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall construction of the multipurpose dual stream valve of the present invention;

FIG. 2 is a sectional view showing an inner structure of the multipurpose double flow valve of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic diagram of the present invention for showing the internal result of the leak;

fig. 5 is a partial structural schematic view of the valve body and the piston of the present invention.

Description of reference numerals:

1. a lower pipeline; 2. a lower inner tube; 3. an upper pipeline; 4. a leak groove; 5. a valve body; 6. a flow channel; 7. a piston; 8. a connecting rod; 9. a water through hole; 10. a retraction spring; 11. reinforcing ribs; 12. a confinement ring; 13. a limiting groove; 14. a spiral conveying plate; 15. a groove; 16. a fixed block; 17. a vent groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

Referring to fig. 1 to 5, the present invention provides a multifunctional dual-flow valve, which includes a lower pipe 1, a lower inner pipe 2, and an upper pipe 3, and water supply and drainage are realized through the lower pipe 1, the lower inner pipe 2, and the upper pipe 3, wherein the lower pipe 1 is used for backflow drainage and setting the lower inner pipe 2, the lower inner pipe 2 is sleeved in the lower pipe 1, the lower inner pipe 2 and the lower pipe 1 are coaxially arranged, the lower inner pipe 2 is erected in the lower pipe 1, and a gap is left between an outer wall of the lower inner pipe 2 and an inner wall of the lower pipe 1.

The utility model discloses a pipeline, including pipeline 3, upper pipe way 3 and lower pipeline 1 coaxial setting, the bottom cover of upper pipe way 3 is established in lower pipeline 1 and is slided in lower pipeline 1, the lateral wall of upper pipe way 3 conflicts with the inside wall of the open-top portion of lower pipeline 1, the one section lateral wall that upper pipe way 3 is located in lower pipeline 1 rises from the one end of conflicting with upper pipe way 3, and the axis department slope of up pipe way 3 sets up to make one section that upper pipe way 3 is located lower pipeline 1 be and leak hopper-shaped. And one end of the lower inner tube 2 is penetrated in the upper pipeline 3 and is attached and tightly propped against the inner side wall of the bottom opening of the upper pipeline 3.

Go up 3 tops of pipeline and seted up the small opening 4, the small opening 4 is the hopper form, the lateral wall of small opening 4 sets up from the notch department of small opening 4 up the axis department slope of pipeline 3, the diameter that the notch of small opening 4 goes out is the biggest, the inside intercommunication of small opening 4 bottom and last pipeline 3, the flexible valve body 5 that is provided with in small opening 4, valve body 5 sets up to the hourglass hopper-shaped that matches with small opening 4, works as when valve body 5 is located small opening 4, valve body 5 supports tightly with the laminating of small opening 4 inner wall, inner tube 2 orders about valve body 5 and slides in small opening 4 down. The outer side wall of the lower inner tube 2 is provided with a flow groove 6, the flow groove 6 on the lower inner tube 2 surrounds the side wall of the lower inner tube 2, and when the flow groove 6 of the lower inner tube 2 moves into the opening at the bottom of the upper pipeline 3, a lower water return channel is formed between the flow groove 6 and the inner side wall of the upper pipeline 3 and the inner wall of the lower pipeline 1.

When using this dual-flow valve, the fluid can enter into lower inner tube 2 this moment, carry through lower inner tube 2 the fluid, at this moment in order to go on the water supply, promote pipeline 1 and slide in last pipeline 3 this moment, at this moment, pipeline 1 drives lower inner tube 2 and removes down, thereby can drive valve body 5 and remove, thereby push valve body 5 away from the small opening in small opening 4, the fluid can enter into last pipeline 3 from lower inner tube 2 this moment, and enter into the container of upside through small opening 4 on last pipeline 3, carry the fluid, when needing the low water backward flow, pipeline 1 removes down again this moment, pipeline 1 drives lower inner tube 2 again and removes down, until the lower opening department of outside 6 moving slot upper tube 3 on lower inner tube 2, thereby make the lateral wall of lower inner tube 2 and the upper tube 3 opening part inside wall not contradict, thereby form the lower water backward flow passageway that is used for the backward flow, the fluid that lower inner tube 2 enters into in last pipeline 3 at this moment flows into in the effect of backward flow passageway, thereby carry out the backward flow through pipeline, the intelligent two-way of the development of the intelligent device, can reduce the efficiency of the intelligent dual-purpose of going on-flow, the intelligent water and the development, can be realized more the efficiency of the reduction of the efficiency of the whole process of the use of this dual-flow, the intelligent program, the efficiency of the reduction of the efficiency of can be shortened in the direct development, the process of the dual-flow.

Specifically, it is equipped with piston 7 that is used for leading to water to slide in the upper tube way 3, set up connecting rod 8 between valve body 5 and the piston 7, connecting rod 8 slides and sets up in the intercommunication mouth of small opening 4 and upper tube way 3, when piston 7 is located 1 bottom of lower tube way, piston 7 is contradicted with the 3 bottom inside walls of upper tube way, 2 tops of inner tube and piston 7 are contradicted down. In order to go on water, promote pipeline 1 this moment and slide in last pipeline 3, at this moment pipeline 1 drives down inner tube 2 and removes, thereby make pipeline 1 down promote piston 7 and remove, piston 7 can drive valve body 5 and remove this moment, thereby push away valve body 5 from the small opening 4 in, the fluid can enter into the upper tube way 3 from lower inner tube 2 this moment, and enter into the container of upside through small opening 4 on the last pipeline 3, carry the fluid.

The lateral wall orientation that lower tube 1 is located the intercommunication department of lower inner tube 2 and upper tube 3 inclines towards the axis direction of keeping away from lower tube 1 to can be the space enlargement of lower tube 1 upper end, thereby can hold upper tube 3 in lower tube 1 when upper tube 3 slides in lower tube 1.

Seted up a plurality of limbers 9 on the piston 7, limbers 9 evenly arranges the setting at the top of piston 7, limbers 9 will descend intercommunication between inner tube 2 and the upper tube way 3, through the setting of limbers 9, when the fluid in the inner tube 2 lets in the upper tube way 3 in needs, thereby can promote piston 7 and valve body 5 through promoting down pipeline 1 and remove when the water feeding, valve body 5 breaks away from with the lateral wall of small opening 4 this moment, thereby make the fluid flow out from between the clearance between valve body 5 and the small opening 4 inner wall, owing to the setting of limbers 9 this moment, the fluid just can enter into upper tube way 3 through limbers 9 in, conveniently carry the fluid.

The cover is equipped with and contracts spring 10 on connecting rod 8, it contradicts to contract spring 10 one end and piston 7, the bottom of the 4 cell bodies of the other end and small opening is contradicted, thereby order about the in-process that valve body 5 and small opening 4 break away from when promoting pipeline 1 down, the spring 10 that contracts under the initial condition this moment, because the distance between piston 7 and the 4 cell bottoms of small opening shortens, thereby make and contract spring 10 and be in compression state, the pressure value that contracts spring 10 and can give valve body 5 a reseing under the compression state, thereby can make when accomplishing water or launching, make valve body 5 can contract initial position this moment, thereby use more convenient and fast of valve.

A plurality of air grooves 17 have been seted up on the inside wall of small opening 4, air groove 17 encircles the setting of the inside wall of small opening 4, air groove 17 extends the setting from small opening 4 and the intercommunication department of upper pipe way 3 toward the notch department of small opening 4. Due to the arrangement of the vent groove 17, when the valve body 5 needs to be closed after fluid flows into the container from the upper pipeline 3 through the leak groove 4, the fluid can play a role of buffering in the vent groove 17, so that the formation of water hammer in the leak groove 4 is reduced, and the hidden trouble when the valve body 5 is closed is avoided.

Be equipped with a plurality of strengthening ribs 11 between 4 cell bodies of small opening groove and the 3 inside walls of upper tube way, through the setting of strengthening rib 11 to make the cell body of small opening groove 4 more stable in 3 inner structures of upper tube way.

Be equipped with elastic limit ring 12 on the lateral wall of piston 7, be equipped with the restriction groove 13 that matches with restriction ring 12 on the inside wall of upper tube way 3 bottom opening part, restriction ring 12 is located restriction groove 13 and laminates with restriction groove 13 inner wall to can play sealed effect, make sealed effectual between the inside wall of piston 7 and the 3 openings part of upper tube way, avoid because the leakproofness is not good, flow out from the clearance between piston 7 and the upper tube way 3 between the fluid in lower inner tube 2, influence the lower water effect of going up.

Be equipped with auger delivery board 14 between the bottom of lower pipeline 1 and lower inner tube 2, auger delivery board 14 encircles and sets up on the inside wall of lower pipeline 1 to the length direction who follows lower pipeline 1 encircles the extension, through auger delivery board 14's setting, thereby can be when carrying out the refluence of launching to the fluid, when the fluid enters into lower pipeline 1 this moment, auger delivery board 14 can carry out the direction to the fluid and carry this moment, thereby the velocity of flow of the refluence of launching has been improved, it is more swift to make the refluence of launching, auger delivery board 14 is connected with lower inner tube 2 lateral wall and lower pipeline 1 inside wall respectively simultaneously, thereby can make lower inner tube 2 erect in lower pipeline 1.

Seted up a plurality of recesses 15 on the top lateral wall of valve body 5, it is a plurality of recess 15 is along 5 week edges of valve body evenly arrange the setting, be provided with fixed block 16 towards recess 15 department on the inner wall of small opening 4, fixed block 16 slides and sets up in recess 15, recess 15 runs through 5 tops of valve body and bottom to can make fixed block 16 reciprocate along with valve body 5 in recess 15. When the lower pipeline 1 is pushed to move so as to drive the valve body 5 to move, at the beginning of moving, the fixing block 16 is firstly separated from the groove 15, at the moment, after the fluid in the upper pipeline 3 enters the leakage groove 4, the valve body 5 is firstly pushed by the grooves 15 a little bit first to drain, so that the buffer effect is achieved, the pressure is balanced, and then the valve body 5 is gradually pushed, so that the fluid flows through the grooves step by step, the stability during draining is ensured, and the damage to equipment caused by the unbalanced pressure is avoided.

The working principle of the invention is as follows: when using this valve, this moment the fluid can enter into lower inner tube 2, carry through lower inner tube 2 fluidics, at this moment in order to go on the water supply, promote that lower tube 1 slides in upper tube 3 this moment, this moment lower tube 1 drives lower inner tube 2 and removes, thereby make lower tube 1 promote piston 7 and remove, piston 7 can drive valve body 5 and remove this moment, thereby push away valve body 5 from the small opening 4 in, this moment the fluid can enter into upper tube 3 from lower inner tube 2, and enter into the container of upside through small opening 4 on upper tube 3, carry the fluid, when needing the water reflux, at this moment remove lower tube 1 again, lower tube 1 drives lower inner tube 2 once more and removes, until the outer outside flow groove 6 on lower tube 2 removes the lower opening department of upper tube 3, thereby make the lateral wall of lower inner tube 2 and the inside wall of upper tube 3 not contradict, thereby form the backward flow passageway that is used for the backward flow, this moment the fluid that lower inner tube 2 enters into in upper tube 3 can be under the effect of water reflux passageway, flow into lower tube 1, thereby carry out the water reflux and need not set up in addition directly to use again, thereby it is convenient to go on the water and use more integrative.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims (10)

1. A multi-functional dual flow valve, comprising:

the lower pipeline (1) is used for realizing backflow drainage;

the lower inner pipe (2) is sleeved in the lower pipeline (1), and a gap is reserved between the outer wall of the lower inner pipe (2) and the inner wall of the lower pipeline (1);

the bottom end of the upper pipeline (3) is sleeved in the lower pipeline (1) and slides in the lower pipeline (1), and the outer side wall of the upper pipeline (3) is abutted against the inner side wall of the opening at the top of the lower pipeline (1);

one end of the lower inner pipe (2) penetrates through the upper pipeline (3) and is attached to the inner side wall of the bottom opening of the upper pipeline (3);

the top of the upper pipeline (3) is provided with a leakage groove (4), the bottom of the leakage groove (4) is communicated with the interior of the upper pipeline (3), a valve body (5) is arranged in the leakage groove (4) in a telescopic mode, when the valve body (5) is located in the leakage groove (4), the valve body (5) is attached to the inner wall of the leakage groove (4), and the lower inner pipe (2) drives the valve body (5) to slide in the leakage groove (4);

the outer side wall of the lower inner pipe (2) is provided with a flow groove (6), and when the flow groove (6) of the lower inner pipe (2) moves into the opening at the bottom of the upper pipeline (3), a water backflow channel is formed between the flow groove (6) and the inner side wall of the upper pipeline (3) and the inner wall of the lower pipeline (1).

2. The multifunctional dual-flow valve according to claim 1, wherein a piston (7) for water supply is slidably arranged in the upper pipe (3), a connecting rod (8) is arranged between the valve body (5) and the piston (7), the connecting rod (8) is slidably arranged in a communicating port of the leakage groove (4) and the upper pipe (3), when the piston (7) is positioned at the bottom of the lower pipe (1), the piston (7) is abutted against the inner side wall at the bottom of the upper pipe (3), and the top of the lower inner pipe (2) is abutted against the piston (7).

3. The multi-functional dual-flow valve according to claim 2, characterized in that the piston (7) is provided with a plurality of water through holes (9), and the water through holes (9) are uniformly arranged on the top of the piston (7).

4. The multifunctional double-flow valve according to claim 2, characterized in that a retraction spring (10) is sleeved on the connecting rod (8), one end of the retraction spring (10) is abutted against the piston (7), and the other end is abutted against the bottom of the groove body of the leakage groove (4).

5. The multi-functional dual flow valve according to claim 1, characterized in that a plurality of vent grooves (17) are opened on the inner side wall of the drain groove (4), and the vent grooves (17) are arranged around the inner side wall of the drain groove (4).

6. The multi-functional dual flow valve according to claim 1, characterized in that a plurality of reinforcement ribs (11) are provided between the body of the leak channel (4) and the inner side wall of the upper pipe (3).

7. The multifunctional dual-flow valve according to claim 2, characterized in that an elastic limiting ring (12) is arranged on the outer side wall of the piston (7), a limiting groove (13) matched with the limiting ring (12) is arranged on the inner side wall of the opening at the bottom of the upper pipeline (3), and the limiting ring (12) is positioned in the limiting groove (13) and attached to the inner wall of the limiting groove (13).

8. The multi-functional dual-flow valve according to claim 1, characterized in that between the lower pipe (1) and the bottom of the lower inner pipe (2) is provided a spiral conveyor plate (14), which spiral conveyor plate (14) is arranged around the inner side wall of the lower pipe (1).

9. The multi-functional dual flow valve according to any of claims 1-8, characterized in that the flow groove (6) on the lower inner tube (2) is arranged around the side wall of the lower inner tube (2).

10. The multifunctional dual-flow valve according to any one of claims 1 to 8, wherein a plurality of grooves (15) are formed in the side wall of the top of the valve body (5), a fixing block (16) is arranged on the inner wall of the leakage groove (4) facing the grooves (15), and the fixing block (16) is slidably arranged in the grooves (15).

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