CN113431929A

CN113431929A - Pipeline cock suitable for multiple channels

Info

Publication number: CN113431929A
Application number: CN202110984888.7A
Authority: CN
Inventors: 钱琪升
Original assignee: Qidong Yong'an Valve Co ltd
Current assignee: Qidong Yong'an Valve Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2021-09-24
Anticipated expiration: 2041-08-26
Also published as: CN113431929B

Abstract

The invention relates to the field of cocks, in particular to a pipeline cock suitable for multiple channels, which comprises a top frame, a polygonal cock body and a bottom frame, wherein shaft holes are formed in the top and the bottom of the polygonal cock body, outer rotating discs are fixed on the top and the bottom of the polygonal cock body, and the top frame is positioned above the polygonal cock body. Can solve the pipeline that current cock can't accomplish to be applicable to the multichannel simultaneously, the cock of same specification can't satisfy both and be applicable to the double-pipe, the three-way pipe is applicable to the four-way pipe again, there is the not high problem of adaptability, and make the passway on the cock communicate with each other or part through the rotation during current cock, realize opening or closing the valve, because the outer wall of rotatory in-process cock can and the valve body inner wall between the friction appears, wear and tear appears easily for a long time and the unable condition of closing completely of valve appears in the use cock outer wall, consequently need whole change after wearing and tearing, and whole change then has the higher problem of cost.

Description

Pipeline cock suitable for multiple channels

Technical Field

The invention relates to the field of cocks, in particular to a pipeline cock suitable for multiple channels.

Background

The plug valve is a rotary valve in the shape of a closure member or a plunger, and the plug is an important component of the plug valve, and the opening or closing of the valve is realized by rotating to make a passage port on the plug communicate with or separate from a passage port on the valve body.

However, current cock still has certain defect when using, at first this kind of cock of current can't accomplish to be applicable to the pipeline of multichannel simultaneously, the cock of same specification can't satisfy both being applicable to the double-pipe, the three-way pipe is applicable to the four-way pipe again, and make the passway on the cock communicate with each other or part with the passway on the valve body through rotatory during current cock, realize opening or closing the valve, because the outer wall of rotatory in-process cock can and the valve body inner wall appear rubbing, the condition that the valve can't be closed completely appears wearing and tearing in the long-time cock outer wall that uses appears easily, consequently need whole change after wearing and tearing, and whole change then has the higher problem of cost.

Disclosure of Invention

The invention aims to provide a pipeline cock suitable for multiple channels, which can solve the problems that the existing cock cannot be simultaneously suitable for multiple channels of pipelines, the cock of the same specification cannot be suitable for a double-way pipe, a three-way pipe and a four-way pipe, and the adaptability is not high, and the existing cock enables a channel port on the cock to be communicated with or separated from a channel port on a valve body by rotating to open or close a valve.

The purpose of the invention can be realized by the following technical scheme:

a pipeline cock suitable for multiple channels comprises a top frame, a polygonal cock body and a bottom frame, wherein shaft holes are formed in the top and the bottom of the polygonal cock body, outer rotating discs are fixed to the top and the bottom of the polygonal cock body respectively, the top frame is located above the polygonal cock body, the bottom frame is located below the polygonal cock body, a plurality of uniformly distributed nail holes are formed in the outer walls of the top frame and the bottom frame respectively, the outer rotating discs located at the top of the polygonal cock body are installed in the middle of the top frame, the outer rotating discs located at the bottom of the polygonal cock body are installed in the middle of the bottom frame, a rotating plate is fixed in the middle of the outer rotating discs located at the top of the polygonal cock body, a rotating shaft penetrates through the two shaft holes, and penetrates through the rotating plate and is rotatably connected with the rotating plate;

the polygon cock body contains five arcwall faces, just every face middle part of the polygon cock body all is provided with a lumen, and a butt joint pipe is all installed to every lumen inside, polygon cock body inside is fixed with a circular retainer plate, circular retainer plate internally mounted has an inner rotating disc, the inner rotating disc is run through in the pivot.

Preferably, the outer wall of the circular fixing ring is provided with five butt joint cavities which are uniformly distributed, the positions of the butt joint cavities correspond to those of the butt joint pipes, and the butt joint pipes are connected into the butt joint cavities.

Preferably, be provided with five evenly distributed's axle chamber on the inner rotating disk outer wall, axle chamber and butt joint chamber looks adaptation, inner rotating disk internally mounted has a first two to lead to inner tube, a second two to lead to inner tube and a straight inner tube, and first two to lead to the inner tube, the crisscross setting of second two to lead to the inner tube, and the both ends of first two both ends of leading to the inner tube, second two both ends of leading to the inner tube are connected with an axle chamber respectively, and fifth axle chamber is connected to the one end of straight inner tube, and the second two to lead to the inner tube is connected to the other end of straight inner tube, the pivot runs through first two to lead to inner tube, second two to lead to the inner tube.

Preferably, the first double-through inner tube and the second double-through inner tube are both arc-shaped structures, and a Y-shaped structure is formed between the second double-through inner tube and the straight inner tube.

Preferably, the outer walls of the vertical sides of the five corners of the polygonal plug body are provided with detachable storage cavities, and a rubber pad is fixed inside each detachable storage cavity.

Preferably, the middle part of the outer ring edge of the top frame and the bottom frame is provided with an intermediate cavity, the two sides of the intermediate cavity are respectively provided with an upper sealing cavity and a lower sealing cavity, the inside of the intermediate cavity is provided with an intermediate air bag, the inside of the upper sealing cavity is provided with an upper air bag, and the inside of the lower sealing cavity is provided with a lower air bag.

Preferably, the middle air bag is communicated with the upper air bag and the lower air bag, the width of the middle air bag is larger than the widths of the upper air bag and the lower air bag, the middle air bag is communicated with the upper air bag and the lower air bag, the middle air bag protrudes from the inner part of the middle cavity, and the upper air bag and the lower air bag are respectively sunk into the inner parts of the upper sealing cavity and the lower sealing cavity.

Preferably, the polygonal plug body is rotatably connected with the top frame and the bottom frame through an outer rotating disc, and the inner rotating disc is rotatably connected with the circular fixing ring through a rotating shaft.

The invention has the beneficial effects that: because the middle parts of the outer ring edges of the top frame and the bottom frame are respectively provided with an intermediate cavity, the two sides of the intermediate cavity are respectively provided with an upper sealing cavity and a lower sealing cavity, the inner part of the intermediate cavity is provided with an intermediate air bag, the inner part of the upper sealing cavity is provided with an upper air bag, the inner part of the lower sealing cavity is provided with a lower air bag, the intermediate air bag is communicated with the upper air bag and the lower air bag, and the top and the inner wall of the bottom of the mounting cavity at the middle part of the double-pipe, the three-way pipe or the four-way pipe are all grooved, so that when the cock is installed, the air in the intermediate air bag can be pressed into the upper air bag and the lower air bag by extruding and fixing the top frame and the bottom frame, the upper air bag and the lower air bag are ejected out of the upper sealing cavity and the lower sealing cavity and are matched with the grooves on the top and the inner wall of the bottom of the mounting cavity of the double-pipe, the three-way pipe and the four-way pipe, so that the upper air bag and the lower air bag are both pressed into the grooves, and the upper air bag is utilized, The lower air bag respectively seals gaps between the top frame and the bottom frame and the installation cavities of the double-way pipe, the three-way pipe and the four-way pipe from the upper side and the lower side, so that the condition that the top and the bottom of the pipeline cock leak due to insufficient sealing degree when in use is avoided;

due to the arrangement of the inner rotary disc, and the first double-through inner tube, the second double-through inner tube and the straight inner tube are arranged in the inner rotary disc, when the cock is used for a double-way tube, the rotary plate is shifted, the rotary plate is utilized to drive the outer rotary disc to rotate, the outer rotary disc drives the polygonal plug body to rotate in the rotating process, so that two corresponding tube cavities on the polygonal plug body face the inlet and the outlet of the double-way tube respectively, then the rotary shaft is rotated, the outer shell of the polygonal plug body is kept still in the rotating process, the rotary shaft is utilized to drive the inner rotary disc to rotate in the circular fixing ring, the circular fixing ring drives the first double-through inner tube and the second double-through inner tube to rotate together in the rotating process until shaft cavities at two ends of the first double-way inner tube face the inlet and the outlet of the double-way tube respectively, and at the moment, the double-way tube can be normally used; when the three-way pipe is used for a three-way pipe, the rotating plate is shifted, the rotating plate is utilized to drive the outer rotating disc to rotate, the outer rotating disc drives the polygonal plug body to rotate in the rotating process, so that three corresponding pipe cavities on the polygonal plug body face to three pipe orifices of the three-way pipe respectively, then the rotating shaft is rotated, the rotating shaft is utilized to drive the inner rotating disc to rotate inside the circular fixing ring, the circular fixing ring drives the first double-way inner pipe and the second double-way inner pipe to rotate together in the rotating process until shaft cavities corresponding to the second double-way inner pipe and the straight inner pipe face to the three pipe orifices of the three-way pipe respectively, and at the moment, the three-way pipe can be normally used; when the plug is used for a four-way pipe, the rotating plate is shifted, the rotating plate is utilized to drive the outer rotating disc to rotate, the outer rotating disc drives the polygonal plug body to rotate in the rotating process, so that four corresponding pipe cavities on the polygonal plug body face four pipe orifices of the four-way pipe respectively, then the rotating shaft is rotated, the rotating shaft is utilized to drive the inner rotating disc to rotate inside the circular fixing ring until shaft cavities corresponding to the first two-way inner pipe and the second two-way inner pipe face the four pipe orifices of the four-way pipe respectively, at the moment, the four-way pipe can be normally used, so that the whole plug can be suitable for a multi-channel pipeline, and the applicability is stronger;

owing to can dismantle the setting of accomodating chamber and rubber pad, make the gap greatly reduced between the pipeline inner wall of polygon cock body and multichannel on the one hand, on the other hand makes the polygon cock body also wear and tear to appear in the rubber pad because of rotating the wearing and tearing appear after long-time the use, only need dismantle when the change and accomodate the chamber, very big degree reduce cost.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a polygonal plug body structure according to the present invention;

FIG. 3 is a schematic view of the internal structure of the polygonal plug body of the present invention;

FIG. 4 is a schematic structural view of the polygonal plug body of the present invention without an inner rotary disk;

FIG. 5 is a schematic view of the inner rotary disk structure of the present invention;

FIG. 6 is a schematic view of the outer turntable structure of the present invention;

FIG. 7 is an enlarged view of a detail of area A of FIG. 6 according to the present invention;

FIG. 8 is an assembly view of the present invention mounted on a dual tube;

FIG. 9 is an assembly view of the present invention mounted on a tee;

FIG. 10 is an assembly view of the present invention mounted on a cross-piece;

in the figure: 1. a top frame; 2. an outer turntable; 3. rotating the plate; 4. a rotating shaft; 5. a polygonal plug body; 6. a bottom frame; 7. a shaft hole; 8. a lumen; 9. butt-joint pipes; 10. an inner rotating disc; 11. a circular retainer ring; 13. a detachable receiving cavity; 14. a rubber pad; 15. a first double-pass inner tube; 16. a second double-pass inner tube; 17. nailing holes; 18. a straight inner tube; 19. an upper sealing cavity; 20. a middle cavity; 21. a lower sealing cavity; 22. an upper air bag; 23. a middle air bag; 24. a lower air bag; 25. a shaft cavity.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-10, a pipe cock suitable for multiple channels includes a top frame 1, a polygonal plug 5 and a bottom frame 6, wherein shaft holes 7 are respectively formed at the top and the bottom of the polygonal plug 5, and an outer rotating disc 2 is respectively fixed at the top and the bottom of the polygonal plug 5, the top frame 1 is located above the polygonal plug 5, the bottom frame 6 is located below the polygonal plug 5, a plurality of nail holes 17 are respectively formed on the outer walls of the top frame 1 and the bottom frame 6, the outer rotating disc 2 at the top of the polygonal plug 5 is installed at the middle of the top frame 1, the outer rotating disc 2 at the bottom of the polygonal plug 5 is installed at the middle of the bottom frame 6, a rotating plate 3 is fixed at the middle of the outer rotating disc 2 at the top of the polygonal plug 5, a rotating shaft 4 penetrates between the two shaft holes 7, and the rotating shaft 4 penetrates through the rotating plate 3 and is rotatably connected with the rotating plate 3; polygonal cock body 5 contains five arcwall faces, and every face middle part of polygonal cock body 5 all is provided with a

lumen

8, and 8 inside butt joint pipes 9 of all installing of every lumen, and polygonal cock body 5 internal fixation has a

circular retainer plate

11, and 11 internally mounted of circular retainer plate have an inner rotary disk 10, and pivot 4 runs through inner rotary disk 10. Five evenly distributed butt joint cavities are arranged on the outer wall of the circular fixing ring 11, the positions of the butt joint cavities correspond to those of the butt joint pipes 9, and the butt joint pipes 9 are connected into the butt joint cavities.

Be provided with five evenly distributed's axle chamber 25 on the inner rotating disk 10 outer wall, axle chamber 25 and butt joint chamber looks adaptation, inner rotating disk 10 internally mounted has a first two to lead to inner tube 15, a second two leads to inner tube 16 and a straight inner tube 18, first two leads to inner tube 15, the crisscross setting of second two logical inner tube 16, the both ends of first two logical inner tube 15, the both ends of second two logical inner tube 16 are connected with an axle chamber 25 respectively, fifth axle chamber 25 is connected to the one end of straight inner tube 18, and second two logical inner tube 16 is connected to the other end of straight inner tube 18, pivot 4 runs through first two logical inner tube 15, second two logical inner tube 16. The first double-pass inner pipe 15 and the second double-pass inner pipe 16 are both arc-shaped structures, and a Y-shaped structure is formed between the second double-pass inner pipe 16 and the straight inner pipe 18, so that the cock can be used for a double-pass pipe when the first double-pass inner pipe 15 is used alone, the cock can be used for a three-way pipe when the second double-pass inner pipe 16 and the straight inner pipe 18 are used in a matched mode, and the cock can be used for a four-way pipe when the first double-pass inner pipe 15 and the second double-pass inner pipe 16 are used together.

All be provided with one on the vertical limit outer wall in five turnings of polygon cock body 5 and dismantle and accomodate chamber 13, every can dismantle and accomodate that chamber 13 is inside all to be fixed with a rubber pad 14, can dismantle the setting of accomodating chamber 13 and rubber pad 14, make the gap greatly reduced between the pipeline inner wall of polygon cock body 5 and multichannel on the one hand, on the other hand makes polygon cock body 5 also be rubber pad 14 wearing and tearing appear because of the wearing and tearing appear in the rotation after using for a long time, only need dismantle when changing and accomodate chamber 13, very big degree reduce cost.

The middle parts of the outer ring edges of the top frame 1 and the bottom frame 6 are respectively provided with an intermediate cavity 20, the two sides of the intermediate cavity 20 are respectively provided with an upper sealing cavity 19 and a lower sealing cavity 21, an intermediate air bag 23 is arranged in the intermediate cavity 20, an upper air bag 22 is arranged in the upper sealing cavity 19, and a lower air bag 24 is arranged in the lower sealing cavity 21. The middle air bag 23 is communicated with the upper air bag 22 and the lower air bag 24, the width of the middle air bag 23 is larger than the width of the upper air bag 22 and the lower air bag 24, the middle air bag 23 is communicated with the upper air bag 22 and the lower air bag 24, the middle air bag 23 protrudes from the middle cavity 20, the upper air bag 22 and the lower air bag 24 are respectively sunk into the upper sealing cavity 19 and the lower sealing cavity 21, when the top frame 1 and the bottom frame 6 are extruded and fixed, the middle air bag 23 presses air into the upper air bag 22 and the lower air bag 24 due to extrusion, the upper air bag 22 and the lower air bag 24 are ejected out from the upper sealing cavity 19 and the lower sealing cavity 21, the top frame 1, the bottom frame 6, the double-way pipe and the groove on the inner wall of the top and the bottom of the installation cavity of the double-way pipe are matched, the upper air bag 22 and the lower air bag 24 are both pressed into the groove, and the top frame 1, the bottom frame 6, the double-way pipe and the three-way pipe are respectively sealed from the upper side and the lower side of the upper air bag 22 and the lower air bag 24, The gap between the installation cavities of the four-way pipe avoids the leakage of the top and the bottom of the pipe cock due to insufficient sealing degree when in use.

The polygonal plug body 5 is rotatably connected with the top frame 1 and the bottom frame 6 through the outer rotating disc 2, the orientation of the tube cavity 8 is adjusted by the rotation of the polygonal plug body 5, the inner rotating disc 10 is rotatably connected with the circular fixing ring 11 through the rotating shaft 4, and the rotating shaft 4 is used for driving the inner rotating disc 10 to rotate so as to select to use the first double-pass inner tube 15, the second double-pass inner tube 16 and the straight inner tube 18.

When the invention is used, firstly, the whole cock is arranged in the middle of a double-way pipe, a three-way pipe or a four-way pipe, the inner walls of the top and the bottom of the installation cavity are grooved, the number of the grooves is three, the specifications of the three grooves are matched with an upper sealing cavity 19, a middle cavity 20 and a lower sealing cavity 21, when the cock is installed, a top frame 1 and a bottom frame 6 are extruded, after the extrusion is finished, screws are pushed into nail holes 17 to fix the top frame 1 and the bottom frame 6, because the middle parts of the outer ring edges of the top frame 1 and the bottom frame 6 are respectively provided with the middle cavity 20, two sides of the middle cavity 20 are respectively provided with the upper sealing cavity 19 and the lower sealing cavity 21, the middle cavity 20 is internally provided with a middle air bag 23, the upper sealing cavity 19 is internally provided with the upper air bag 22, the lower sealing cavity 21 is internally provided with the lower air bag 24, the middle air bag 23 is communicated with the upper air bag 22 and the lower air bag 24, and the middle air bag 23 protrudes from the middle cavity 20 at the beginning, the upper air bag 22 and the lower air bag 24 are respectively sunk into the upper sealing cavity 19 and the lower sealing cavity 21, so that when the top frame 1 and the bottom frame 6 are extruded and fixed, the middle air bag 23 is extruded to press air into the upper air bag 22 and the lower air bag 24, the upper air bag 22 and the lower air bag 24 are ejected out from the upper sealing cavity 19 and the lower sealing cavity 21, and are matched with slots on the top and bottom inner walls of the installation cavities of the two-way pipe, the three-way pipe and the four-way pipe, so that the upper air bag 22 and the lower air bag 24 are both propped into the slots, gaps between the top frame 1 and the bottom frame 6 and the installation cavities of the two-way pipe, the three-way pipe and the four-way pipe are respectively sealed by the upper air bag 22 and the lower air bag 24 from the upper side and the lower side, the condition that the top and the bottom of the pipeline cock are leaked due to insufficient sealing degree when the pipeline cock is used is avoided, then the cock is adjusted, when the pipeline cock is used for the two-way pipe, the rotating plate 3 is firstly shifted, the outer rotating plate 2 is driven to rotate, the outer rotating disc 2 drives the polygonal plug body 5 to rotate in the rotating process, so that two corresponding tube cavities 8 on the polygonal plug body 5 face an inlet and an outlet of a double-way pipe respectively, then the rotating shaft 4 is rotated, the outer shell of the polygonal plug body 5 is kept stationary in the rotating process of the rotating shaft 4, the rotating shaft 4 is used for driving the inner rotating disc 10 to rotate inside the circular fixing ring 11, the circular fixing ring 11 drives the first double-way inner pipe 15 and the second double-way inner pipe 16 to rotate together in the rotating process until the shaft cavities 25 at two ends of the first double-way inner pipe 15 face the inlet and the outlet of the double-way pipe respectively, and at the moment, the double-way pipe can be used normally; when the three-way pipe is used for a three-way pipe, the rotating plate 3 is shifted, the rotating plate 3 is utilized to drive the outer rotating disc 2 to rotate, the outer rotating disc 2 drives the polygonal plug body 5 to rotate in the rotating process, so that three corresponding pipe cavities 8 on the polygonal plug body 5 face three pipe orifices of the three-way pipe respectively, then the rotating shaft 4 is rotated, the rotating shaft 4 is utilized to drive the inner rotating disc 10 to rotate inside the circular fixing ring 11, the circular fixing ring 11 drives the first two-way inner pipe 15 and the second two-way inner pipe 16 to rotate together in the rotating process until the shaft cavities 25 corresponding to the second two-way inner pipe 16 and the straight inner pipe 18 face the three pipe orifices of the three-way pipe respectively, and at the moment, the three-way pipe can be normally used; when the rotating plate is used for a four-way pipe, the rotating plate 3 is shifted, the rotating plate 3 is utilized to drive the outer rotating disc 2 to rotate, the outer rotating disc 2 drives the polygonal plug body 5 to rotate in the rotating process, so that four corresponding pipe cavities 8 on the polygonal plug body 5 face four pipe orifices of the four-way pipe respectively, then the rotating shaft 4 is rotated, the rotating shaft 4 is utilized to drive the inner rotating disc 10 to rotate inside the circular fixing ring 11 until the shaft cavities 25 corresponding to the first two-way inner pipe 15 and the second two-way inner pipe 16 face the four pipe orifices of the four-way pipe respectively, and the four-way pipe can be normally used at the moment.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a pipeline cock suitable for multichannel, includes top frame (1), polygon cock body (5) and underframe (6), its characterized in that, polygon cock body (5) top and bottom all are provided with shaft hole (7), and polygon cock body (5) top and bottom all are fixed with an outer capstan (2), top frame (1) is located the top of polygon cock body (5), underframe (6) are located the below of polygon cock body (5), all are provided with a plurality of evenly distributed's nail hole (17) on top frame (1) and underframe (6) outer wall, and outer capstan (2) that are located polygon cock body (5) top are installed in the middle part of top frame (1), and outer capstan (2) that are located polygon cock body (5) bottom are installed in the middle part of underframe (6), and the intermediate position of outer capstan (2) that are located polygon cock body (5) top is fixed with a commentaries on classics board (3), a rotating shaft (4) penetrates through the two shaft holes (7), and the rotating shaft (4) penetrates through the rotating plate (3) and is rotatably connected with the rotating plate (3);

polygon cock body (5) contain five arcwall faces, just every face middle part of polygon cock body (5) all is provided with a lumen (8), and every lumen (8) is inside all to install one and to manage (9), polygon cock body (5) inside is fixed with a circular retainer plate (11), circular retainer plate (11) internally mounted has an inner rotating disc (10), pivot (4) run through inner rotating disc (10).

2. A pipe tap adapted for multiple channels according to claim 1, characterised in that five evenly distributed docking cavities are provided on the outer wall of the circular retainer ring (11), the docking cavities are located corresponding to the docking pipe (9), and the docking pipe (9) is inserted into the docking cavities.

3. The pipe cock for multichannel as claimed in claim 2, wherein the outer wall of the inner rotary disk (10) is provided with five evenly distributed shaft cavities (25), the shaft cavities (25) are adapted to the butt joint cavities, the inner rotary disk (10) is internally provided with a first double-through inner pipe (15), a second double-through inner pipe (16) and a straight inner pipe (18), the first double-through inner pipe (15) and the second double-through inner pipe (16) are arranged in a staggered manner, two ends of the first double-through inner pipe (15) and two ends of the second double-through inner pipe (16) are respectively connected with one shaft cavity (25), one end of the straight inner pipe (18) is connected with the fifth shaft cavity (25), the other end of the straight inner pipe (18) is connected with the second double-through inner pipe (16), and the rotating shaft (4) penetrates through the first double-through inner pipe (15) and the second double-through inner pipe (16).

4. A pipe tap adapted for multiple passes as claimed in claim 3, characterised in that the first and second double pass inner pipes (15, 16) are both of arcuate configuration, the second double pass inner pipe (16) and the straight inner pipe (18) forming a Y-shaped configuration therebetween.

5. A pipe tap adapted for multiple passages as claimed in any one of claims 1 to 4, characterised in that the polygonal tap body (5) has a removable receiving chamber (13) on the outer wall of each of the five vertical corners, and a rubber gasket (14) is fixed inside each removable receiving chamber (13).

6. A pipe cock for multiple channels according to any one of claims 1-4, characterised in that the top frame (1) and the bottom frame (6) are provided with a middle chamber (20) in the middle of the outer rim, an upper sealing chamber (19) and a lower sealing chamber (21) are respectively provided on both sides of the middle chamber (20), a middle air bag (23) is installed in the middle chamber (20), an upper air bag (22) is installed in the upper sealing chamber (19), and a lower air bag (24) is installed in the lower sealing chamber (21).

7. A pipe tap adapted to a polytunnel as claimed in claim 6 wherein the intermediate bladder (23) communicates with both the upper bladder (22) and the lower bladder (24), the intermediate bladder (23) having a width greater than the width of the upper bladder (22) and the lower bladder (24), and the intermediate bladder (23) communicates with both the upper bladder (22) and the lower bladder (24), the intermediate bladder (23) projecting from the interior of the intermediate chamber (20), the upper bladder (22) and the lower bladder (24) recessed within the interior of the upper envelope (19) and the lower envelope (21) respectively.

8. A pipe tap adapted for multiple passages as claimed in claim 7, characterised in that said polygonal tap body (5) is rotatably connected to the top and bottom frames (1, 6) by means of an external turn-plate (2), and said internal turn-plate (10) is rotatably connected to the circular retainer ring (11) by means of a rotary shaft (4).