CN112066062A

CN112066062A - Easy dismounting's antifouling pipeline valve

Info

Publication number: CN112066062A
Application number: CN202010781867.0A
Authority: CN
Inventors: 朱正直
Original assignee: Hangzhou Yixin Technology Innovation Co Ltd
Current assignee: Hangzhou Yixin Technology Innovation Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2020-12-11
Also published as: JP6788859B1; JP2022031039A

Abstract

The invention discloses an antifouling pipeline valve convenient to disassemble and assemble, and belongs to the field of valves. The utility model provides a simple dismounting's antifouling pipeline valve, which comprises a valve body, be fixed in the inlet tube and the outlet pipe at valve body both ends respectively, inner at the inlet tube, install two fixed knot structure that are the symmetric relation along the direction that is close to the valve body in proper order, seal structure and two conflict structures that are the symmetric relation, fixed knot constructs and is used for fixing outside sewage pipes inside the inlet tube, it is through setting up fixed knot structure, only need simple operation can realize the installation and the dismantlement to the valve body, and fixed knot of fixed knot structure can also drive seal structure and conflict structure work, effectively reach the triple of outside antifouling pipeline fixed, still need not with the help of other external instrument, the valve body installation that significantly reduces and the takedown time when improving the installation firmness, good sealed effect still has simultaneously, make sewage be difficult for flowing, cause the pollution.

Description

Easy dismounting's antifouling pipeline valve

Technical Field

The invention relates to the field of valves, in particular to an antifouling pipeline valve convenient to disassemble and assemble.

Background

A valve is a device for controlling the direction, pressure, and flow rate of a fluid in a fluid system, and is a device capable of controlling the flow rate of a medium (liquid, gas, or powder) in a pipe or equipment by flowing or stopping the medium. The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, and has the functions of diversion, cut-off, throttling, check, flow splitting, overflow pressure relief and the like. Valves used for fluid control range from the simplest shut-off valves to the various valves used in extremely complex autonomous systems, ranging in variety and specification from the very tiny instrument valves up to industrial pipeline valves with nominal diameters of up to 10 m. The valve can be used for controlling various types of fluid such as water, steam, oil products, gas, slurry, various corrosive media, liquid metal, radioactive fluid and the like to flow, the working pressure of the valve can be ultrahigh pressure from 0.0013MPa to 1000MPa, and the working temperature can be ultralow temperature from c-270 ℃ to high temperature from 1430 ℃.

When discharging printing sewage, generally all can control the emission of sewage in outside sewage pipes tip installation valve, general valve all is comparatively loaded down with trivial details when dismantling with the sewage pipes installation, still need be with the help of outside instrument sometimes, screwdriver etc. comparatively inconvenient, and probably appear the condition that the joint department reveals after long-time the use to cause the pollution to the external world.

Disclosure of Invention

The invention aims to provide an antifouling pipeline valve convenient to disassemble and assemble, which can be used for installing and disassembling a valve body only through simple operation by arranging a fixing structure, and the fixing operation of the fixing structure can also drive a sealing structure and a contact structure to work, so that triple fixation on an external antifouling pipeline is effectively achieved, other external tools are not needed, the installation firmness is improved, the installation and disassembly time of the valve body is greatly reduced, and meanwhile, the antifouling pipeline valve has a good sealing effect, so that sewage is not easy to flow out to cause pollution.

In order to solve the above problems, the present invention adopts the following technical solutions.

A kind of easy dismounting antifouling pipeline valve, including the valve block, water inlet pipe and outlet pipe fixed to both ends of the valve block separately, at least a pair of fixed structure, a seal structure and two conflict structures in corresponding relation that are symmetrical relation are installed in the said water inlet pipe inner, along the direction close to the valve block sequentially, the said fixed structure is used for fixing the outside blow-off pipeline inside the water inlet pipe, the said seal structure is used for sealing the gap between inlet pipe and the outside blow-off pipeline, the said conflict structure is used for strengthening the fixing fastness between water inlet pipe and the outside blow-off pipeline;

arbitrary fixed knot constructs including digging at the inner mounting groove of inlet tube, rotate the commentaries on classics piece of connection in the mounting groove through the pivot, install a plurality of latches that the commentaries on classics piece is close to inlet tube side and to the setting element that pivot one end was kept away from to the commentaries on classics piece advance line location be connected with the extensible member that is used for making the latch stretch out and draw back between latch and the commentaries on classics piece.

Further, the setting element is including fixing the fixed block that the commentaries on classics piece is close to inlet tube one end, cutting the draw-in groove that matches with the fixed block on the inlet tube, cutting the slot of keeping away from the extensible member side at the fixed block, insert the inserted bar of establishing in the slot, fix at inserted bar and the inner compression spring of slot, be used for supporting and press the button and the restriction of inserted bar make its lateral shifting communicate the jack of external and draw-in groove simultaneously.

Further, the side that changes the piece and be close to the extensible member sets up to first cambered surface, and the cambered surface centre of a circle of first cambered surface is located pivot department, the side that the mounting groove is close to the piece sets up the second cambered surface that matches with first cambered surface, distance between first cambered surface and second cambered surface is less than the height of latch, reduces the gap between first cambered surface and second cambered surface, and utilizes the latch to shelter from the opening that first cambered surface and second cambered surface are close to inlet pipe inner wall one side to reduce the entering of filth, make difficult storage filth between first cambered surface and second cambered surface, and cause the card of changing the piece to die difficult the rotation when the filth is more easily.

Furthermore, the second cambered surface is close to latch department and sets up to the slope with latch lateral surface assorted, makes slope and the left side outside the gap between the latches is littleer, and slope and above-mentioned latch lateral surface area of contact are bigger, and existing extrusion latch that helps make the compression of second compression spring, do benefit to again and reduce the gap, reduce the probability that the filth got into.

Furthermore, the extensible member supplies including fixing the T-shaped piece in the latch bottom, digging on the commentaries on classics piece the spacing spout of T-shaped piece straight line slip and prevent its slippage, fix the second compression spring between T-shaped piece and spacing spout bottom, the degree of depth of spacing spout is greater than the height of latch for the latch can be accomodate to inside completely, thereby the outward roll-out of the commentaries on classics piece of being convenient for.

Further, seal structure is including digging at the inside annular structure gas receiver of inlet pipe, slide at the inside annular slide of gas receiver, fix annular slide and be close to commentaries on classics piece one end and rather than perpendicular distribution's ejector pin, fix the first extension spring between annular slide left end and gas receiver groove wall, install the rubber circle and the intercommunication at the hollow annular structure of inlet pipe inner wall gas receiver and the inside air flue of rubber circle, first extension spring helps annular slide's the reseing.

Further, conflict structure is including fixing the feeler lever, the excavation of keeping away from ejector pin one end at annular slide and making on the inlet tube to feeler lever only rectilinear movement's horizontal slot, excavation on the inlet tube and inside and the sliding hole of horizontal slot of intercommunication inlet tube, gliding splint in the sliding hole, both ends respectively with splint and the fixed second extension spring of sliding hole inner wall, splint and conflict pole opposite face all set up to the inclined plane, the reseing that second extension spring was used for.

Further, the one end demountable installation that the valve body was kept away from to the outlet pipe has the antifouling structure that is used for carrying out the interception with the inside large granule impurity of sewage, reduces the treatment difficulty that a large amount of cotton-like debris direct discharge caused in the sewage.

Further, antifouling structure is including cup jointing the protection casing in the outlet pipe outer end, fixing horizontal pole between the protection casing inner wall, the cross-section of rotating the connection on the horizontal pole is the round pin axle of "ten" font, fix impeller and the scraper blade at round pin axle upper and lower both ends, be fixed with between the protection casing inner wall and be the filter screen that leaks hopper-shaped, the scraper blade is close to a filter screen side and is equipped with the brush hair, the protection casing is close to the upper shed outer wall and digs and has a plurality of connecting holes, through in the connecting hole spiro union screw rod can with the protection casing is installed in the outlet pipe outer end, when sewage from the outlet pipe discharge, the impact force of sewage drives the impeller and rotates, and the round pin axle rotates in step, drives the scraper blade and cleans filter screen surface rotation.

Furthermore, the height of latch is greater than the minimum distance between commentaries on classics piece and the interior wall of water inlet pipe, and the up end of latch is outstanding the horizontal plane that the interior wall of water inlet pipe was located promptly, makes things convenient for outside sewage pipes to install when in the water inlet pipe, and the latch is fixed to its conflict.

Compared with the prior art, the invention has the advantages that:

one, this scheme only needs simple operation, can accomplish the installation and the dismantlement of outside sewage pipes in the inlet pipe, and the valve body installation that significantly reduces and dismantlement time still need not comparatively convenient with the help of other external tools.

Two, this scheme fixed knot constructs, seal structure and conflict structure, gives multiple fixed, improves the installation firmness greatly.

Third, this scheme seal structure and conflict structure's work drives the realization through fixed knot structure's operation, need not the independent operation.

Fourth, this scheme seal structure can also be sealed outside sewage pipes and inlet tube clearance except having the antifouling pipeline effect of fixed outside, reduces revealing of sewage, has good sealed effect.

Fifthly, the positioning piece can be used for positioning the rotary block, so that the rotary block can be prevented from rotating when the external antifouling pipeline is fixed in the water inlet pipe.

Sixth, this scheme sets up the first cambered surface and the second cambered surface that match each other, makes two cambered surfaces close, and the clearance diminishes, is difficult for having the filth storage to produce the influence to the rotation flexibility ratio of changeing the piece.

Seventhly, this scheme slope matches with left outside latch inclination, makes left outside latch and slope be close, has both helped the extrusion latch to make the compression of second compression spring, does benefit to again and reduces the gap, reduces the probability that the filth got into.

Eight, this scheme extensible member make the latch can collect and incorporate in the commentaries on classics piece to be convenient for change the piece and change into and roll out, can also utilize second compression spring's elasticity to increase the fixed dynamics of latch to outside antifouling pipeline.

Ninth, the setting of this scheme antifouling structure filters the interior exhaust sewage of outlet pipe, effectively removes the flocculus in the sewage, reduces the direct processing influence of discharging of flocculus in the sewage to the next process, prevents blockking up the processing simultaneously in filterable, makes the filter screen difficult by the flocculus jam, and the application of antifouling structure can be installed and dismantle as required in addition.

Ten, this scheme latch highly be greater than the minimum distance between commentaries on classics piece and the interior wall of water pipe, the up end of latch is outstanding the water pipe inner wall place horizontal plane promptly, when making things convenient for outside sewage pipes to install in the water pipe, the latch is fixed to its conflict.

Drawings

FIG. 1 is a perspective view of the structure of the rotary block of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

FIG. 3 is a sectional view of the structure of the water inlet pipe of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 at B;

FIG. 5 is a schematic structural diagram at B1 in FIG. 4;

FIG. 6 is a schematic view of the seal and interference structures of the present invention;

FIG. 7 is a perspective view of the structure of the present invention;

FIG. 8 is a schematic view of the structure of the anti-fouling structure of the present invention.

The reference numbers in the figures illustrate:

1, a valve body;

2, a water inlet pipe;

3, discharging a water pipe;

4, fixing a structure; 4a first cambered surface, 4b second cambered surface, 41 mounting grooves, 42 rotating blocks, 43 clamping teeth, 44 rotating shafts, 45 positioning pieces and 46 telescopic pieces; 451 fixed block, 452 neck, 453 inserted bar, 454 first compression spring, 455 button, 456 jack; 461T-shaped block, 462 second compression spring, 463 limit sliding groove;

5, sealing structure, 51 air storage tank, 52 annular sliding plate, 53 mandril, 54 first extension spring, 55 rubber ring and 56 air channel;

6 abutting structures, 61 transverse grooves, 62 abutting rods, 63 sliding holes, 64 clamping plates and 65 second extension springs;

7 antifouling structure, 71 protective cover, 72 threaded hole, 73 transverse rod, 74 pin shaft, 75 scraper blades, 76 impeller and 77 filter screen.

Detailed Description

Reference will now be made to the drawings in which embodiments of the invention are illustrated.

Example 1:

referring to fig. 1-8, an easy-to-disassemble and assemble anti-fouling pipeline valve comprises a valve body 1, a water inlet pipe 2 and a water outlet pipe 3 fixed at two ends of the valve body 1, wherein at least one pair of fixing structures 4, a sealing structure 5 and two corresponding abutting structures 6 are sequentially arranged on the pipe wall at the inner end of the water inlet pipe 2 along the direction close to the valve body 1; fixed knot constructs 4 and is used for being fixed outside sewage pipes in inlet tube 2 is inside, and seal structure 5 is used for sealing up the gap between outside sewage pipes and the inlet tube 2, and conflict structure 6 is used for strengthening the fixed fastness between outside sewage pipes and inlet tube 2.

Arbitrary fixed knot constructs 4 including digging at inlet tube 2 inner mounting groove 41, rotate the commentaries on classics piece 42 of connection in mounting groove 41 through pivot 44, install a plurality of latches 43 that are close to inlet tube 2 a side at commentaries on classics piece 42 and to changeing piece 42 and keep away from pivot 44 one end and go on the setting element 45 of fixing a position, be connected with the extensible member 46 that is used for making latch 43 flexible between latch 43 and commentaries on classics piece 42, the minimum distance between latch 43's height is greater than commentaries on classics piece 42 and the interior wall of

inlet tube

2, 2 inner wall place horizontal planes of the protruding inlet tube of up end of latch 43 promptly, when making things convenient for outside sewage pipes to install in inlet tube 2, latch 43 is fixed to its conflict.

Referring to fig. 2 and 4, the positioning member 45 includes a fixing block 451 fixed to an end of the rotary block 42 adjacent to the inlet pipe 2, a locking groove 452 formed in the inlet pipe 3 to be matched with the fixing block 451, a slot formed in a side surface of the fixing block 451 remote from the telescopic member 46, an insertion rod 453 inserted into the slot, a first compression spring 454 fixed to the insertion rod 453 and an inner end of the slot, a button 455 for pressing the insertion rod 453, and a receptacle 456 for limiting the button 455 to move only laterally while communicating the outside with the locking groove 452.

Referring to fig. 5, the side of the rotary block 42 close to the telescopic member 46 is provided with a first arc surface 4a, the center of the arc surface of the first arc surface 4a is located at the rotating shaft 44, the side of the mounting groove 41 close to the rotary block 42 is provided with a second arc surface 4b matched with the first arc surface 4a, the distance between the first arc surface 4a and the second arc surface 4b is smaller than the height of the latch 43, so as to reduce the gap between the first arc surface 4a and the second arc surface 4b, and the latch 43 is used to shield the openings of the first arc surface 4a and the second arc surface 4b close to the inner wall of the water inlet pipe 2, thereby reducing the entering of dirt, so that the dirt is not easy to be stored between the first arc surface 4a and the second arc surface 4b, and when the dirt is more, the rotary block 42 is easy to be blocked and not easy to rotate, the ramp 4c matched with the outer side of the latch 43 is arranged at the second arc surface 4b close to the latch 43, so that the gap between, the contact area of the slope 4c and the outer side surface of the latch 43 is larger, which is beneficial to not only pressing the latch 43 to compress the second compression spring 462, but also reducing the gap and reducing the probability of dirt entering.

Referring to fig. 5, the extensible member 46 includes a T-shaped block 461 fixed to the bottom end of the latch 43, a limiting sliding groove 463 formed on the rotary block 42 for the T-shaped block 461 to slide linearly and prevent the T-shaped block from slipping, and a second compression spring 462 fixed between the T-shaped block 461 and the bottom end of the limiting sliding groove 463, wherein the depth of the limiting sliding groove 463 is greater than the height of the latch 43, so that the latch 43 can be completely received in the 463, thereby facilitating the outward rotation of the rotary block 42.

Referring to fig. 6, the sealing structure 5 includes an annular air storage tank 51 drilled inside the water inlet pipe 2, an annular sliding plate 52 sliding inside the air storage tank 51, a push rod 53 fixed to one end of the annular sliding plate 52 near the rotary block 42 and vertically distributed with the rotary block, a first extension spring 54 fixed between the left end of the annular sliding plate 52 and the wall of the air storage tank 51, a rubber ring 55 mounted on the inner wall of the water inlet pipe 2 and having a hollow annular structure, and an air duct 56 communicating the air storage tank 51 with the rubber ring 55, wherein the first extension spring 54 facilitates the return of the annular sliding plate 52; conflict structure 6 is including fixing the conflict pole 62 of keeping away from ejector pin 53 one end at annular slide 52, excavate the cross slot 61 that makes the only rectilinear movement of conflict pole 62 on inlet tube 2, excavate the inside slide opening 63 with cross slot 61 of water inlet tube 2 on inlet tube 2 and intercommunication inlet tube 2, splint 64 that slide in slide opening 63, both ends respectively with splint 64 and the fixed second extension spring 65 of slide opening 63 inner wall, splint 64 and conflict pole 62 opposite face all set up to the inclined plane, second extension spring 65 is used for the reseing of 64.

Referring to fig. 7-8, an anti-fouling structure 7 for intercepting large granular impurities in sewage is detachably mounted at one end of the water outlet pipe 3 away from the valve body 1, so that the treatment difficulty caused by directly discharging a large amount of flocculent impurities in sewage is reduced; antifouling structure 7 is including cup jointing the protection casing 71 in outlet pipe 3 outer end, fix horizontal pole 73 between the inner wall of protection casing 71, the cross-section of rotating the connection on horizontal pole 73 is "ten" shape round pin axle 74, fix impeller 76 and scraper blade 75 at round pin axle 74 upper and lower both ends, be fixed with between protection casing 71 inner wall and be funnel-shaped filter screen 77, scraper blade 75 is close to filter screen 77 a side and is equipped with the brush hair, protection casing 71 is close to the upper shed outer wall and chisels a plurality of connecting holes 72, can install protection casing 71 in outlet pipe 3 outer end through the threaded screw in connecting hole 72, when sewage is discharged from outlet pipe 3, the impact force of sewage drives impeller 76 and rotates, round pin axle 74 synchronous rotation, it cleans filter screen 77 surface rotation to drive scraper blade 75, effectively avoid the condition emergence of filter screen 77 jam, thereby effectively guarantee filter.

When the fixing device is used, the rotating block 42 is firstly rotated outwards to enable the latch 43 to be positioned at the second cambered surface 4b, then an external sewage pipeline is inserted into one end, far away from the valve body 1, of the water inlet pipe 2, then the rotating block 42 is pressed towards one side close to the external sewage pipeline, when the fixing device is pressed, the rotating block 42 drives the latch 43 to slide along the second cambered surface 4b and then abut against the wall of the external sewage pipeline to fix the latch, and under the action of the elastic force of the second compression spring 462, the fixing block 451 is more firmly fixed, at the moment, the fixing block is inserted into the slot 452, the inserted rod 453 is inserted into the insertion hole 456 to be fixed under the action of the first compression spring 454, so that the rotating block 42 is not easy to rotate outwards, and simultaneously the inserted rod 453 ejects the button 455 outwards, so that the button 455 is conveniently pressed to compress the first compression spring 454 to eject the inserted rod 453 in the insertion hole 456 to be fixed, and externally due to the matching of the, and the slope 4c is matched with the outer side surface of the latch 43, so that the dirt entering into the gap between the external sewage pipeline and the water inlet pipe 2 carelessly is not easy to enter into the space between the first cambered surface 4a and the second cambered surface 4b to be accumulated, and the rotating block 42 is blocked in the mounting groove 41 to influence the rotation of the rotating block 42.

When pressing commentaries on classics piece 42, commentaries on classics piece 42 can be to right side top action ejector pin 53, annular slide 52 moves to the right side and extrudes the air in the gas receiver 51 and get into rubber circle 55 through air flue 56 in, rubber circle 55 inflation is compensated the gap between outside sewage pipes and the inlet tube 2, thereby reach good sealed effect, effectively avoid sewage to leak, prevent pollution, 55 inflation also has partly fixed action to outside sewage pipes simultaneously, annular slide 52 moves to the right side when moving to the right side, promote splint 64 and move to being close to outside sewage pipes side, support and press in the pipe wall outside, it is fixed to contradict it, increase fixed firmness once more, and second extension spring 65 is tensile this moment, when abutting rod 62 resets, splint 64 can also reset to the initial position under second extension spring 65's elasticity.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto.

Claims

1. An antifouling pipeline valve convenient to disassemble and assemble is characterized by comprising a valve body (1), a water inlet pipe (2) and a water outlet pipe (3) which are respectively fixed at two ends of the valve body (1); at least one pair of fixed structures (4) which are in a symmetrical relationship, a sealing structure (5) and two abutting structures (6) which are in a corresponding relationship are sequentially arranged on the inner end pipe wall of the water inlet pipe (2) and along the direction close to the valve body (1); the fixing structure (4) is used for fixing an external sewage discharge pipeline inside the water inlet pipe (2), the sealing structure (5) is used for sealing a gap between the external sewage discharge pipeline and the water inlet pipe (2), and the abutting structure (6) is used for enhancing the fixing fastness between the external sewage discharge pipeline and the water inlet pipe (2);

arbitrary fixed knot constructs (4) including digging at inlet tube (2) inner mounting groove (41), rotate through pivot (44) and connect commentaries on classics piece (42) in mounting groove (41), install and be close to a plurality of latch (43) of inlet tube (2) a side and keep away from pivot (44) one end to commentaries on classics piece (42) and carry out setting element (45) of fixing a position be connected with between latch (43) and commentaries on classics piece (42) and be used for making flexible extensible member (46) of latch (43).

2. The anti-fouling pipeline valve convenient to assemble and disassemble as claimed in claim 1, wherein the positioning member (45) comprises a fixing block (451) fixed at one end of the rotating block (42) close to the water inlet pipe (2), a clamping groove (452) cut on the water inlet pipe (3) and matched with the fixing block (451), a slot cut on one side surface of the fixing block (451) far away from the telescopic member (46), an inserting rod (453) inserted in the slot, a first compression spring (454) fixed at the inner ends of the inserting rod (453) and the slot, a button (455) used for pressing the inserting rod (453) and a jack (456) for limiting the button (455) to enable the button (455) to move only transversely and simultaneously communicate with the outside and the clamping groove (452).

3. An easy dismounting antifouling pipeline valve according to claim 1, wherein the side of the rotary block (42) close to the telescopic member (46) is set as a first cambered surface (4a), the centre of the first cambered surface (4a) is located at the rotating shaft (44), the side of the mounting groove (41) close to the rotary block (42) is set as a second cambered surface (4b) matched with the first cambered surface (4a), and the distance between the first cambered surface (4a) and the second cambered surface (4b) is smaller than the height of the latch (43).

4. An easy-to-dismount antifouling pipeline valve according to claim 1, wherein the second cambered surface (4b) is provided with a slope (4c) close to the latch (43) and matched with the outer side surface of the latch (43), so that the gap between the slope (4c) and the latch (43) on the left outermost side is smaller.

5. The easy-to-assemble and disassemble antifouling pipeline valve as claimed in claim 1, wherein the telescopic member (46) comprises a T-shaped block (461) fixed at the bottom end of the latch (43), a limiting sliding groove (463) cut on the rotating block (42) for the T-shaped block (461) to slide linearly and prevent the T-shaped block from slipping, and a second compression spring (462) fixed between the T-shaped block (461) and the bottom end of the limiting sliding groove (463), and the depth of the limiting sliding groove (463) is greater than the height of the latch (43).

6. The antifouling pipeline valve convenient to assemble and disassemble as claimed in claim 1, wherein the sealing structure (5) comprises an annular air storage groove (51) formed in the water inlet pipe (2), an annular sliding plate (52) sliding in the air storage groove (51), a push rod (53) fixed to one end of the annular sliding plate (52) close to the rotary block (42) and vertically distributed with the rotary block, a first tension spring (54) fixed between the left end of the annular sliding plate (52) and the groove wall of the air storage groove (51), a rubber ring (55) of a hollow annular structure installed on the inner wall of the water inlet pipe (2), and an air passage (56) communicating the air storage groove (51) with the inside of the rubber ring (55).

7. An easy-to-dismount antifouling pipeline valve according to claim 6, wherein the abutting structure (6) comprises a contact rod (62) fixed at one end of the annular sliding plate (52) far from the top rod (53), a transverse groove (61) cut on the water inlet pipe (2) to enable the contact rod (62) to move only linearly, a sliding hole (63) cut on the water inlet pipe (2) and communicated with the inside of the water inlet pipe (2) and the transverse groove (61), a clamping plate (64) sliding in the sliding hole (63), and a second tension spring (65) with two ends fixed with the inner walls of the clamping plate (64) and the sliding hole (63) respectively, and the opposite surfaces of the clamping plate (64) and the abutting rod (62) are set to be inclined planes.

8. An easily detachable valve for an anti-fouling pipeline according to claim 1, characterized in that an anti-fouling structure (7) for intercepting large granular impurities in sewage is detachably mounted at one end of the water outlet pipe (3) far away from the valve body (1).

9. The easy-to-dismount antifouling pipeline valve according to claim 8, wherein the antifouling structure (7) comprises a protective cover (71) sleeved at the outer end of the water outlet pipe (3), a cross rod (73) fixed between the inner walls of the protective cover (71), a cross-shaped pin shaft (74) rotatably connected to the cross rod (73), an impeller (76) and a scraper (75) fixed to the upper end and the lower end of the pin shaft (74), a funnel-shaped filter screen (77) is fixed between the inner walls of the protective cover (71), bristles are arranged on one side of the scraper (75) close to the filter screen (77), a plurality of connecting holes (72) are formed in the outer wall of the protective cover (71) close to the upper opening, and the protective cover (71) can be mounted at the outer end of the water outlet pipe (3) through a screw bolt screwed in the connecting holes (72).

10. An easy-to-dismount antifouling pipeline valve according to claim 1, characterized in that the height of the latch (43) is larger than the minimum distance between the rotary block (42) and the inner wall of the water inlet pipe (2).