CN111501951A

CN111501951A - Municipal drainage is with mouth of pipe that dams down-flow prevention device

Info

Publication number: CN111501951A
Application number: CN202010420799.5A
Authority: CN
Inventors: 吕雯
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-08-07

Abstract

The invention discloses a backflow preventing device for a cut-off pipe orifice for municipal drainage, which comprises a cut-off pipe, wherein the upper end of the pipe orifice of the cut-off pipe is fixedly connected with an installation seat, the bottom of the installation seat is provided with a vertical groove, a shielding plate is vertically and slidably connected inside the vertical groove, the side wall of the bottom end of the shielding plate is attached to the pipe orifice of the cut-off pipe, a first spring is fixedly connected between the top of the shielding plate and the inner top wall of the vertical groove, the upper end of the shielding plate is also vertically welded with a connecting rod, the connecting rod is positioned in the center of the first spring, the upper end of the connecting rod penetrates through the installation seat to extend out of the installation seat, and a limit groove is arranged in. The invention can automatically seal the intercepting pipe when the water level in the drainage river is about to reach the height of the pipe orifice of the intercepting pipe, has higher transmission precision and convenient and fast resetting operation, can prevent water in the drainage river from flowing backwards to influence the drainage efficiency of the intercepting pipe in other directions, and is more favorable for municipal drainage.

Description

Municipal drainage is with mouth of pipe that dams down-flow prevention device

Technical Field

The invention relates to the technical field of municipal drainage, in particular to a backflow preventing device for a closure pipe orifice for municipal drainage.

Background

The sponge city is a new generation of city rainfall flood management concept, and refers to a city which can be like a sponge and has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by rainwater and the like, and the city can also be called as a water elasticity city.

At present, in the sponge city construction process, can set up many in the municipal drainage network and shut off the pipe and carry out the distribution of rain and sewage. However, during heavy rainstorm, the water level of the drainage channel is often very high, which causes unsmooth drainage of the intercepting pipe and backflow of river water into the intercepting pipe, thereby affecting the drainage efficiency of the intercepting pipes in different directions and causing great inconvenience.

Therefore, the backflow preventing device for the municipal drainage cut-off pipe orifice is provided.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the drainage of an intercepting pipe is not smooth and river water flows back to the intercepting pipe due to the fact that the water level of a drainage river channel is often very high during heavy rainstorm, so that the drainage efficiency of the intercepting pipe in different directions is affected and the backflow is very inconvenient.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a municipal drainage is with mouth of pipe that dams prevents flowing backward device, includes the shutoff pipe, the mouth of pipe upper end rigid coupling of shutoff pipe has the mount pad, the bottom of mount pad is seted up a vertical groove, the inside vertical sliding connection in vertical groove has a shielding plate, wherein the bottom lateral wall of shielding plate and the laminating of the mouth of pipe of shutoff pipe, fixedly connected with first spring between the top of shielding plate and the interior top wall in vertical groove, the upper end of shielding plate still vertical welding has a connecting rod, the connecting rod is located the positive center of first spring and its upper end runs through and extends the mount pad outside, the shielding plate middle edge department has seted up a spacing groove, spacing inslot portion activity is equipped with a stopper, the mount pad is inside still to be seted up a cross slot that cooperates the stopper to use, the one end that the spacing groove was kept away from to the stopper is located the cross slot and can follow the cross slot lateral slip, the limiting block and the inner wall of the transverse groove are fixedly connected with a second spring, and a trigger mechanism matched with the shielding plate and the limiting block is arranged outside the mounting seat.

In the above-mentioned municipal drainage is with preventing that filling device from falling of mouth of pipe that dams, trigger mechanism includes an L venturi tube of sealed rigid coupling on the mount pad lateral wall, the one end of stopper stretches out the spacing groove and its lateral wall fixedly connected with a stay cord of keeping away from the second spring, first stay cord transversely runs through the mount pad and extends into L venturi tube inside and fixedly connected with movable pulley, movable pulley can follow L venturi tube inner tube wall and transversely slide, one side fixedly connected with a second stay cord that the movable pulley keeps away from first stay cord, still the rigid coupling has a pulley yoke on the inner wall of L venturi tube, install a first fixed pulley and a second fixed pulley on the pulley yoke side by side, wherein the diameter of second fixed pulley is greater than first fixed pulley, the one end that the movable pulley was kept away from to the second stay cord is in proper order around first fixed pulley, movable pulley and second fixed pulley behind the L venturi tube vertical droop and the rigid coupling have the balancing weight, the balancing weight also is located L venturi tube inside and its horizontal height is slightly less than the height of mouth.

Compared with the prior art, this municipal administration drainage is with preventing flowing backward device's advantage lies in with the mouth of pipe that dams:

1. the triggering mechanism is arranged to be matched with the baffle plate and the limiting block for use, when the water level in the drainage river is about to reach the height of the pipe orifice of the intercepting pipe, the baffle plate can automatically close the intercepting pipe, and therefore the drainage efficiency of the intercepting pipe in other directions is prevented from being influenced by the backward flow of water in the drainage river;

2. through the arrangement that the pulley block formed by the first fixed pulley, the second fixed pulley and the movable pulley is matched with the balancing weight and the limiting block for use, the limiting block can sense the change condition of the water level in the drainage river more sensitively, and the transmission precision is higher.

In conclusion, the invention can automatically close the intercepting pipe when the water level in the drainage river is about to reach the pipe orifice height of the intercepting pipe, has higher transmission precision and convenient and fast resetting operation, can prevent water in the drainage river from flowing backwards to influence the drainage efficiency of the intercepting pipe in other directions, and is more beneficial to municipal drainage.

Drawings

FIG. 1 is a schematic structural view of a backflow preventing device of a cutoff pipe orifice for municipal drainage according to the present invention;

FIG. 2 is an enlarged view of the structure of part A in FIG. 1;

FIG. 3 is a side view of the structure of a limiting groove and a limiting block part in the anti-reverse filling device of the intercepting pipe orifice for municipal drainage provided by the invention.

In the figure, the device comprises a cut-off pipe 1, a mounting seat 2, a vertical groove 3, a shielding plate 4, a first spring 5, a connecting rod 6, a limiting groove 7, a limiting block 8, a transverse groove 9, a second spring 10, a pipe 11L, a first pull rope 12, a movable pulley 13, a second pull rope 14, a pulley frame 15, a first fixed pulley 16, a second fixed pulley 17 and a counterweight block 18.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-3, a municipal drainage pipe orifice backflow prevention device comprises an intercepting pipe 1, wherein the upper end of the pipe orifice of the intercepting pipe 1 is fixedly connected with a mounting seat 2, the bottom of the mounting seat 2 is provided with a vertical groove 3, the interior of the vertical groove 3 is vertically and slidably connected with a baffle plate 4, the bottom side wall of the baffle plate 4 is attached to the pipe orifice of the intercepting pipe 1, a first spring 5 is fixedly connected between the top of the baffle plate 4 and the inner top wall of the vertical groove 3, the upper end of the baffle plate 4 is also vertically welded with a connecting rod 6, the connecting rod 6 is positioned in the center of the first spring 5, the upper end of the connecting rod extends out of the mounting seat 2, the middle of the baffle plate 4 is provided with a limit groove 7 close to the edge, a limit block 8 is movably arranged in the limit groove 7, the mounting seat 2 is also provided with a transverse groove 9 matched with the limit block 8, one end of the limit block 8, which is far away from, a second spring 10 is fixedly connected between the limiting block 8 and the inner wall of the transverse groove 9; wherein the first spring 5 is in a compressed state and the second spring 10 is in a stretched state;

the outer part of the mounting seat 2 is further provided with a trigger mechanism used by matching with the shielding plate 4 and the limiting block 8, the trigger mechanism comprises a L-shaped pipe 11 which is fixedly connected to the outer side wall of the mounting seat 2 in a sealing manner, one end of the limiting block 8 extends out of the limiting groove 7, and the side wall of the limiting block 8, which is far away from the second spring 10, is fixedly connected with a first pull rope 12, the first pull rope 12 transversely penetrates through the mounting seat 2 and extends into the L-shaped pipe 11 and is fixedly connected with a movable pulley 13, the movable pulley 13 can transversely slide along the inner pipe wall of the L-shaped pipe 11, one side of the movable pulley 13, which is far away from the first pull rope 12, is fixedly connected with a second pull rope 14, the inner wall of the L-shaped pipe is further fixedly connected with a pulley frame 15, the pulley frame 15 is provided with a first fixed pulley 16 and a second fixed pulley 17 in parallel, wherein the diameter of the second fixed pulley 17 is larger than that of the first fixed pulley 16, one end of the second pull rope 14, which is far away from the movable pulley 13, sequentially bypasses the L-shaped pipe 11, and is vertically hung from the pipe 11, and is.

In the invention, when the water level in the drainage river channel is lower than the height of the intercepting pipe 1, the first pull rope 12 pulls the limiting block 8 to be clamped in the limiting groove 7 to limit the shielding plate 4 under the action of the gravity of the balancing weight 18, and at the moment, the second spring 10 is in a stretching state, so that the intercepting pipe 1 can normally drain water into the drainage river channel; when the water level in the drainage river channel is about to reach the height of the intercepting pipe 1 in heavy rainstorm weather, sewage begins to gradually submerge the balancing weight 18, the density of the balancing weight 18 is slightly smaller than that of water, the sewage can drive the balancing weight 18 to float upwards, the tensile force effect of one end of the balancing weight 18 on the second pull rope 14 can be reduced, so that the limiting block 8 can be pulled to move towards the outside of the limiting groove 7 under the action of the resetting force of the second spring 10, after the limiting block 8 is completely separated from the limiting groove 7, the shielding plate 4 is separated from the limiting position and can slide downwards out of the vertical groove 3 under the action of the elastic force of the first spring 5 to shield and seal the pipe orifice of the intercepting pipe 1, and therefore the water in the drainage river channel is prevented from flowing backwards to;

after the drainage work is finished, the weight block 18 is restored due to the fact that the weight block is no longer subjected to the pulling force of the sewage buoyancy effect on the second pulling rope 14, municipal workers can pull the connecting rod 6 upwards to withdraw the baffle plate 4 into the vertical groove 3 when checking that the intercepting pipe 1 is closed, and when the limiting groove 7 on the baffle plate 4 is aligned with the limiting block 8 again, the first pulling rope 12 can pull the limiting block 8 to be clamped into the limiting groove 7 again to complete resetting; it is worth to say that, because of the effect of the pulley block that first fixed pulley 16, second fixed pulley 17 and movable pulley 13 constitute, can make the pulling force of first stay cord 12 to stopper 8 be about triple of balancing weight 18 to the pulling force of second stay cord 14 to can make stopper 8 more sensitive to the change situation response of drainage river course internal water level, the transmission precision is higher.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a municipal administration drainage is with mouth of pipe that dams anti-refluence device, includes shutoff pipe (1), its characterized in that, the mouth of pipe upper end rigid coupling of shutoff pipe (1) has mount pad (2), a perpendicular groove (3) has been seted up to the bottom of mount pad (2), the vertical sliding connection in inside of perpendicular groove (3) has a shielding plate (4), wherein the bottom lateral wall of shielding plate (4) and the mouth of pipe laminating of shutoff pipe (1), fixedly connected with first spring (5) between the top of shielding plate (4) and the interior top wall of perpendicular groove (3), the upper end of shielding plate (4) still vertical welding has a connecting rod (6), connecting rod (6) are located the positive center of first spring (5) and its upper end runs through and extend mount pad (2) outside, shielding plate (4) have seted up a spacing groove (7) by the middle edge department, spacing groove (7) inside activity is equipped with a stopper (8), transverse groove (9) that a cooperation stopper (8) used have still been seted up to mount pad (2) inside, the one end that spacing groove (7) were kept away from in stopper (8) is located transverse groove (9) and can follows transverse groove (9) lateral sliding, still fixedly connected with second spring (10) between stopper (8) and transverse groove (9) inner wall, the outside of mount pad (2) still is equipped with the trigger mechanism that cooperation shielding plate (4) and stopper (8) used.

2. The backflow prevention device for the intercepting pipe orifice for municipal drainage according to claim 1, wherein the triggering mechanism comprises a L-shaped pipe (11) hermetically fixed to the outer side wall of the mounting seat (2), one end of the limiting block (8) extends out of the limiting groove (7) and is fixedly connected with a first pull rope (12) to the side wall of the side thereof away from the second spring (10), the first pull rope (12) transversely penetrates through the mounting seat (2) and extends into the inside of the L-shaped pipe (11) and is fixedly connected with a movable pulley (13), the movable pulley (13) can transversely slide along the inner wall of the L-shaped pipe (11), a second pull rope (14) is fixedly connected to the side of the movable pulley (13) away from the first pull rope (12), a pulley frame (15) is fixedly connected to the inner wall of the L), a first fixed pulley (16) and a second fixed pulley (17) are mounted on the pulley frame (15) side by side, wherein the diameter of the second fixed pulley (17) is larger than that of the first fixed pulley (16), the second fixed pulley (14) is sequentially arranged around the first fixed pulley (18) and is slightly lower than the height of the intercepting pipe orifice (18) and is lower than that of the vertical counterweight (3617) and is also arranged inside the counterweight (3611).