CN210529878U

CN210529878U - Blow-off pipe

Info

Publication number: CN210529878U
Application number: CN201921020390.3U
Authority: CN
Inventors: 贾迺祎; 刘永; 李宏文
Original assignee: Beijing Zhicheng Jiexun Water Conservancy Engineering Co Ltd
Current assignee: Beijing Zhicheng Jiexun Water Conservancy Engineering Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-05-15
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to a municipal administration sewage pipes, in particular to blow off pipe, it includes the body, the outside of body one end is provided with a plurality of connecting holes, still includes connection pad and connecting piece, the one end of keeping away from the connecting hole on the body is fixed to the connection pad, and the transversal ring shape of personally submitting of connection pad has seted up annular groove, the tip of tip adaptation and another body of recess and body can stretch into in the recess, the connecting piece is provided with a plurality of and a plurality of connecting pieces and fixes on the outer periphery of connection pad, the output pierces through the connection pad and can stretch into in the connecting hole of another body. The utility model has the characteristics of easy to assemble, improve work efficiency.

Description

Blow-off pipe

Technical Field

The utility model relates to a municipal administration sewage discharging equipment, in particular to blow off pipe.

Background

The sewage drain pipe is a body for collecting and discharging sewage, wastewater and rainwater.

At present, be provided with the ring flange at the end fixing of body, seted up a plurality of through-holes on the ring flange, when connecting the body, use more bolt and nut cooperation to connect two ring flanges, and then connect two blow off pipes.

The above prior art solutions have the following drawbacks: when the blow off pipe is installed, when a large number of bolts are used for connecting the two bodies, the bolts are required to be arranged on the two flange plates one by one, then the nuts are screwed, and the operation process is complex and lower in work efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blow off pipe, it has easy to assemble, improves work efficiency's characteristics.

The above object of the present invention can be achieved by the following technical solutions: the utility model provides a blow off pipe, includes the body, the outside of body one end is provided with a plurality of connecting holes, still includes connection pad and connecting piece, the connection pad is fixed in the one end of keeping away from the connecting hole on the body, and the transversal ring shape of personally submitting of connection pad has seted up annular groove with the one end that deviates from the body on the connection pad, the tip of the tip adaptation of recess and body and another body can stretch into in the recess, the connecting piece is provided with a plurality of and a plurality of connecting pieces and fixes on the outer periphery of connection pad, the output pierces through the connection pad and can stretch into in the connecting hole of another body.

Through adopting above-mentioned technical scheme, the leakproofness behind this body coupling can be guaranteed to body and the mutual adaptation of recess, the staff at first takes out the output of a plurality of connecting pieces from the inside of connection pad, secondly stretch into the tip of another body in the annular groove and make the connecting hole correspond with the output of connecting piece, then loosen the output of a plurality of connecting pieces, the output of connecting piece corresponds respectively and stretches into in the connecting hole, and then conveniently accomplish the connection between two bodies, simplify the operation to the body installation, effectively improve work efficiency.

The utility model discloses further set up to: the connecting piece includes box body, baffle, first spring and ejector pin, box body one end is the opening end, and the box body opening end is fixed on the outside periphery of connection pad, the baffle sets up in the box body, first spring is the state of stretching and sets up in the box body, and the both ends of first spring butt respectively is in the inside of baffle and box body, the ejector pin pierce through the blind end, baffle and the connection pad of the relative opening end of box body in proper order and with baffle fixed connection, the one end that the ejector pin pierces through the connection pad is located the recess and can stretch into in the connecting hole.

Through adopting above-mentioned technical scheme, the one end of baffle is kept away from to the pulling ejector pin, and the ejector pin drives the baffle and compresses first spring, and the tip of another body stretches into the recess and the connecting hole corresponds the back with the tip of ejector pin, loosens the ejector pin, and the vertical baffle that promotes of the first spring of compressed makes the ejector pin stretch into the recess once more and connect another body, simple structure, and it is comparatively convenient to operate, is convenient for carry out erection joint to the body.

The utility model discloses further set up to: the ejector pin sets up to the cuboid structure, and the ejector pin pierces through the rectangle through-hole that the position of box body blind end and connection pad all seted up with the ejector pin adaptation, stretches into the one end of recess and has seted up the wedge face near one side of recess notch at the ejector pin, the wedge face is by the tip slope setting of ejector pin.

Through adopting above-mentioned technical scheme, the cuboid structure can not rotate at will in the rectangular hole, and then makes the wedge face of ejector pin can move towards the notch of recess always, and after another body stretched into the recess, the tip butt of body was on the wedge face of ejector pin for the ejector pin can move outside the connection pad voluntarily, and after the tip of ejector pin corresponds with the connecting hole, the ejector pin stretched into in the connecting hole voluntarily, under the prerequisite that does not need the staff to take out the ejector pin from, further simplified installation, it is more convenient to use.

The utility model discloses further set up to: the drain pipe comprises a connecting disc, and is characterized in that a clamping groove is formed in the connecting disc, the clamping groove is formed in the inner surface of the connecting disc, the length direction of the clamping groove is parallel to the axial direction of the connecting disc, the rib is fixed on the outer circumferential surface of a body, the length direction of the rib is parallel to the axial direction of the body, the rib is matched with the clamping groove, and when the ejector rod extends into the connecting hole, the rib extends into the groove.

By adopting the technical scheme, the convex edges correspond to the clamping grooves, then the body extends into the groove, and meanwhile, the plurality of ejector rods can extend into the connecting holes, so that the structure is simple, and the ejector rods can quickly correspond to the connecting holes; simultaneously, the trend that the bead can effectively be less the body at the recess internal rotation in the draw-in groove to can reduce the body and to the horizontal force that many ejector pins were exerted, play the guard action to the ejector pin effectively.

The utility model discloses further set up to: the utility model provides a blow off pipe still includes coupling assembling, bracing piece and blind hole, coupling assembling includes connecting pipe, installation piece, second spring and connecting rod, the connecting pipe is the arc pipe and its both ends are the blind end, the installation piece is provided with two and all sets up in the connecting pipe, the second spring is the shrink state and sets up in the connecting pipe and is located between two installation pieces, the both ends of second spring respectively with two installation piece fixed connection, the connecting rod is provided with two, and the connecting rod is the arc pole, the one end of connecting rod with installation piece fixed connection and the other end pierce through the blind end of connecting pipe and keep away from the one end rigid coupling of baffle with the ejector pin, the one end of bracing piece is rotated and is set up on the connecting pipe, the blind hole is seted up on the connection pad, and the one end that the connecting.

Through adopting the above technical scheme, the pulling connecting pipe drives two connecting rods and can take out two ejector pins from the connecting hole simultaneously, stretch into the blind hole with the tip of bracing piece and support the connecting pipe in, and then can make two ejector pins take out from the connecting hole, stretch into the blind hole back when the bracing piece, the one end that the ejector pin stretches into in the recess is taken out completely from the recess, and then the realization is spacing to many ejector pins, make many ejector pins temporarily can not stretch into the connecting hole once more, thereby need not occupy the unnecessary manpower and accomplish the dismantlement to the body, it is more convenient during the use.

The utility model discloses further set up to: the utility model provides a blow off pipe still includes the sealing strip, the sealing strip is made by flexible material, and the sealing strip is fixed on body one end, and one side that deviates from the body on the sealing strip is provided with the dentate structure of the annular slope of multirow, the most advanced orientation of dentate structure deviates from the connection pad.

Through adopting above-mentioned technical scheme, the dentate structure of slope reduces and hinders in the body stretches into the recess, and after the tip of body stretched into the recess, flexible dentate structure can increase the area of contact of body and recess inner wall, and then can increase the sealed effect between body and the connection pad better.

The utility model discloses further set up to: the sealing strip is arranged inside the body.

By adopting the technical scheme, the condition that the sealing strip obstructs the ejector rod to the body connection can be avoided.

The utility model discloses further set up to: the utility model provides a blow off pipe still includes the protecting crust, the protecting crust includes two U type grooves, two the tip in U type groove is articulated each other, and U type groove is 180 loop configuration and its notch towards the annular centre of a circle, and the width of U type groove notch is unanimous with the width of connection pad, the otic placode is provided with two, and two otic placodes are perpendicular to U type groove axis direction respectively and fix on the other end in two U type grooves, correspond on two otic placodes and seted up the through-hole.

Through adopting above-mentioned technical scheme, two U type grooves protect a plurality of connecting pieces, effectively separate connecting piece and soil, reduce the rusty condition of connecting piece.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the connecting disc and the connecting pieces, the bodies and the grooves are mutually matched to ensure the sealing performance after the bodies are connected, a worker firstly draws the output ends of the connecting pieces away from the inside of the connecting disc, secondly stretches the end part of another body into the annular groove and enables the connecting hole to correspond to the output end of the connecting piece, then loosens the output ends of the connecting pieces, and the output ends of the connecting pieces respectively correspondingly stretch into the connecting holes, so that the connection between the two bodies is conveniently completed, the operation of body installation is simplified, and the working efficiency is effectively improved;

2. the box body, the baffle, the first spring and the ejector rod are arranged, one end of the ejector rod, which is far away from the baffle, is pulled, the ejector rod drives the baffle to compress the first spring, after the end part of the other body extends into the groove and the connecting hole corresponds to the end part of the ejector rod, the ejector rod is loosened, and the compressed first spring vertically pushes the baffle to enable the ejector rod to extend into the groove again and connect the other body;

3. through setting up the ejector pin for cuboid structure and wedge, the cuboid structure can not rotate at will in the rectangular hole, and then make the wedge of ejector pin can move towards the notch of recess always, the tip butt of body is on the wedge of ejector pin for the ejector pin can move outside the connection pad automatically, after the tip of ejector pin corresponds with the connecting hole, in the connecting hole is stretched into automatically to the ejector pin, under the prerequisite that does not need the staff to take out the ejector pin from, further simplify the installation, it is more convenient to use.

Drawings

FIG. 1 is a schematic view of a sewage drain pipe;

FIG. 2 is a schematic view showing a structure of a sewage drain pipe with a protective shell removed;

fig. 3 is a sectional structure diagram of the connection disc, the connection member, and the connection member.

In the figure, 1, a body; 2. a connecting disc; 21. a card slot; 3. a connecting member; 31. a box body; 32. a baffle plate; 33. a first spring; 34. a top rod; 4. a rib; 5. a connecting assembly; 51. a connecting pipe; 52. mounting blocks; 53. a second spring; 54. a connecting rod; 6. a support bar; 7. blind holes; 8. a sealing strip; 9. a protective shell; 91. a U-shaped groove; 92. an ear plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

Referring to fig. 2, the utility model discloses a blow off pipe, including body 1, connection pad 2 and connecting piece 3.

The outside of body 1 one end evenly is provided with a plurality of connecting holes, the axis direction of connecting hole and body 1's axis direction mutually perpendicular, connection pad 2 is fixed and is kept away from the one end of connecting hole on body 1, connection pad 2's transversal personally submits the ring shape, the annular groove has been seted up to the one end that deviates from body 1 on connection pad 2, the recess can stretch into in the recess with the tip adaptation of body 1 and the tip of another body 1, connecting piece 3 is provided with a plurality of and a plurality of connecting piece 3 evenly fix on the outer periphery of connection pad 2, the length direction of connecting piece 3 output and body 1's axial direction mutually perpendicular, the output pierces through connection pad 2 and can stretch into in the connecting hole of another body 1.

During the use, the leakproofness after body 1 is connected can be guaranteed with the mutual adaptation of recess to body 1, the staff at first takes out the output of a plurality of connecting pieces 3 from connection pad 2's inside, secondly stretch into the annular groove with the tip of another body 1 and make the connecting hole correspond with the output of connecting piece 3, then loosen the output of a plurality of connecting pieces 3, the output of connecting piece 3 corresponds respectively and stretches into in the connecting hole, and then conveniently accomplish the connection between two bodies 1, simplify the operation to body 1 installation, effectively improve work efficiency.

Referring to fig. 3, the connecting member 3 includes a box 31, a baffle 32, a first spring 33 and a push rod 34, the box 31 is an internal hollow structure, one end of the box is an open end, the open end of the box 31 is fixed on the circumferential surface outside the connecting disc 2, the baffle 32 is arranged in the box 31 and located on the connecting disc 2, the first spring 33 is arranged in the box 31 in an extending state, two ends of the first spring 33 are respectively abutted to the inside of the end opposite to the open ends of the baffle 32 and the box 31, the push rod 34 sequentially penetrates through the closed end of the opposite open end of the box 31, the baffle 32 and the connecting disc 2 and is fixedly connected with the baffle 32, and one end of the push rod 34 penetrating through the connecting disc 2 is located in the groove and.

During the use, pulling ejector pin 34 keeps away from the one end of baffle 32, and ejector pin 34 drives baffle 32 and compresses first spring 33, and the tip of another body 1 stretches into the recess and the connecting hole corresponds the back with the tip of ejector pin 34, loosens ejector pin 34, and the vertical baffle 32 that promotes of the first spring 33 of compressed makes ejector pin 34 stretch into the recess once more and connect another body 1, simple structure, and it is comparatively convenient to operate, is convenient for carry out erection joint to body 1.

During the in-service use, because connecting piece 3 is provided with a plurality ofly, when connecting two bodies 1, need take out many ejector pins 34 simultaneously from the recess, when taking out simultaneously from many ejector pins 34, the operation process is comparatively loaded down with trivial details, for further simplifying operation process, carries out following improvement to ejector pin 34.

Ejector pin 34 sets up to the cuboid structure, and ejector pin 34 pierces through the rectangle through-hole that all seted up with ejector pin 34 adaptation in the position of box body 31 blind end and connection pad 2, has seted up the wedge face in one side that ejector pin 34 stretched into the one end of recess and was close to the recess notch, and the wedge face is by the tip slope setting of ejector pin 34.

During the use, the cuboid structure can not rotate at will in the rectangular hole, and then make the wedge face of ejector pin 34 can move towards the notch of recess always, after another body 1 stretched into the recess, the tip butt of body 1 was on the wedge face of ejector pin 34, make ejector pin 34 can move outside connection pad 2 automatically, after the tip of ejector pin 34 corresponds with the connecting hole, in ejector pin 34 stretched into the connecting hole automatically, under the prerequisite that does not need staff to take ejector pin 34 out, further simplify the installation, it is more convenient to use.

Referring to fig. 2, in actual use, after the end of the body 1 extends into the groove, a worker needs to correspond the connecting holes to the ends of the push rods 34, and to further simplify the operation process, a clamping groove 21 and a rib 4 are provided for quickly corresponding the connecting holes to the push rods 34.

The clamping groove 21 is formed in the inner surface of the connecting disc 2, the length direction of the clamping groove 21 is parallel to the axial direction of the body 1, the convex ribs 4 are fixed to the outer circumferential surface of the body 1, the length direction of the convex ribs 4 is parallel to the axial direction of the connecting disc 2, the convex ribs 4 are matched with the clamping groove 21, and when the ejector rod 34 extends into the connecting hole, the convex ribs 4 extend into the grooves.

When the connecting device is used, the convex edges 4 correspond to the clamping grooves 21, then the body 1 extends into the groove, and meanwhile the plurality of ejector rods 34 can extend into the connecting holes, so that the structure is simple, and the ejector rods 34 can quickly correspond to the connecting holes; meanwhile, the trend that the rib 4 can effectively reduce the rotation of the body 1 in the groove in the clamping groove 21 can be reduced, so that the transverse force applied to the plurality of ejector rods 34 by the body 1 can be reduced, and the ejector rods 34 can be effectively protected.

Combine fig. 2, fig. 3, during the in-service use, when needs change the maintenance to body 1, need the staff to take out ejector pin 34 from the connecting hole, because ejector pin 34 is provided with many, take out ejector pin 34 and need many staff to go on simultaneously when leaving the connecting hole, in addition still need the staff to hold ejector pin 34 with the hand always, until taking out body 1 from connection pad 2, can occupy unnecessary manpower this moment, can influence the staff and do other work, be provided with coupling assembling 5 for this reason, bracing piece 6 and blind hole 7, be used for spacing taking out ejector pin 34 from the connecting hole.

The connecting assembly 5 comprises a connecting pipe 51, mounting blocks 52, a second spring 53 and a connecting rod 54, the connecting pipe 51 is an arc pipe, two ends of the connecting pipe 51 are closed ends, two mounting blocks 52 are arranged in the connecting pipe 51, the second spring 53 is arranged in the connecting pipe 51 in a contraction state and is positioned between the two mounting blocks 52, two ends of the second spring 53 are respectively fixedly connected with the two mounting blocks 52, the elastic coefficient of the second spring 53 is greater than the sum of the elastic coefficients of the two first springs 33, connecting rod 54 is provided with two, connecting rod 54 is the arc pole, the one end of connecting rod 54 with installation piece 52 fixed connection and the other end pierce through the blind end of connecting pipe 51 and with the one end rigid coupling that baffle 32 was kept away from to ejector pin 34, the one end of bracing piece 6 is rotated and is set up on connecting pipe 51, the length more than or equal to ejector pin 34's of bracing piece 6 length, blind hole 7 is seted up on connection pad 2, the one end that connecting pipe 51 was kept away from to bracing piece 6 can stretch into in the blind hole 7.

During the use, pulling connecting pipe 51 drives two connecting rods 54 and can take out two ejector pins 34 from the connecting hole simultaneously, because the elasticity coefficient of second spring 53 is greater than the sum of two first spring 33 elasticity coefficients, so can compress two first spring 33 simultaneously during the pulling two ejector pins 34, then stretch into blind hole 7 with the tip of bracing piece 6 in, support connecting pipe 51, and then can make two ejector pins 34 take out from the connecting hole, because the length more than or equal to ejector pin 34 of bracing piece 6's length, so after bracing piece 6 stretched into blind hole 7, the recess was taken out completely to the one end that ejector pin 34 stretched into in the recess, and then realize spacing many ejector pins 34, make many ejector pins 34 temporarily can not stretch into the connecting hole again, thereby need not occupy the unnecessary manpower and accomplish the dismantlement to body 1, it is more convenient during the use.

Referring to fig. 3, in actual use, in order to further enhance the sealing performance between the body 1 and the connecting disc 2, a sealing strip 8 is further provided, the sealing strip 8 is made of a flexible material, such as plastic, rubber, and the like, the sealing strip 8 is fixed on one end of the body 1, one side of the sealing strip 8, which is far away from the body 1, is provided with a plurality of rows of annularly inclined tooth-shaped structures, and the tip of each tooth-shaped structure faces away from the connecting disc 2.

When the sealing device is used, the inclined tooth-shaped structure prevents the body 1 from extending into the groove, and after the end part of the body 1 extends into the groove, the flexible tooth-shaped structure can increase the contact area between the body 1 and the inner wall of the groove, so that the sealing effect between the body 1 and the connecting disc 2 can be better increased.

Referring to fig. 3, in actual use, when the sealing strip 8 is disposed on the outer circumferential surface of the body 1, the teeth inclined on the sealing strip 8 may prevent the push rod 34 from extending into the connecting hole, so that the sealing strip 8 is disposed inside the body 1, and the situation that the sealing strip 8 prevents the push rod 34 from connecting to the body 1 can be avoided.

Referring to fig. 2, in actual use, generally, the drain pipe is buried underground, so in order to ensure the use strength of the body 1, the connecting disc 2 and the connecting piece 3, the two are made of metal, such as steel, iron and the like, the edge of the connecting disc 2 is relatively sharp, when a worker installs the body 1, the worker may scratch the clothes or hands of the worker, and therefore, the edge of the connecting disc 2 is polished to enable the edge to be smooth, so that the occurrence of scratching the worker or scratching the clothes is effectively reduced; meanwhile, the opening angle of the notch is increased at the notch of the smooth groove, so that another body can be conveniently stretched into the groove.

Referring to fig. 1, during the in-service use, bury underground when body 1 for a long time after, the rusty condition can appear in connecting piece 3 underground and soil direct contact, when needing to maintain body 1 and change, rusty connecting piece 3 can inconvenient pulling, is provided with protecting crust 9 for this reason, protects a plurality of connecting pieces 3.

The protective housing 9 includes two U type grooves 91, and the tip in two U type grooves 91 is articulated each other, and U type groove 91 is 180 loop configuration and its notch towards the annular centre of a circle, and the width of U type groove 91 notch is unanimous with the width of connection pad 2, and otic placode 92 is provided with two, and two otic placodes 92 perpendicular to U type groove 91 axis direction respectively and fix on the other end in two U type grooves 91, correspond on two otic placodes 92 and seted up the through-hole.

During the use, correspond two U type grooves 91 and cover the outside of establishing at connection pad 2, correspond two otic placodes 92 after, use the bolt to connect two otic placodes 92, and then make two U type grooves 91 protect a plurality of connecting pieces 3, effectively separate connecting piece 3 and soil, reduce the rusty condition of connecting piece 3.

The embodiment of this embodiment is the utility model discloses preferred embodiment is not according to this restriction the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a blow off pipe, includes body (1), the outside of body (1) one end is provided with a plurality of connecting holes, its characterized in that: still include connection pad (2) and connecting piece (3), the one end of keeping away from the connecting hole on body (1) is fixed in connection pad (2), and the transversal ring shape of personally submitting of connection pad (2) has seted up the annular groove, the tip adaptation of recess and body (1) and the tip of another body (1) can stretch into in the recess, connecting piece (3) are provided with a plurality of and a plurality of connecting piece (3) and fix on the outer periphery of connection pad (2), and the output of connecting piece (3) pierces through connection pad (2) and can stretch into in the connecting hole of another body (1).

2. A waste pipe as claimed in claim 1, wherein: connecting piece (3) are including box body (31), baffle (32), first spring (33) and ejector pin (34), box body (31) one end is the opening end, and box body (31) opening end is fixed on connection pad (2) outside periphery, baffle (32) set up in box body (31), first spring (33) are the extension state and set up in box body (31), and the both ends of first spring (33) butt respectively in the inside of baffle (32) and box body (31), ejector pin (34) pierce through closed end, baffle (32) and connection pad (2) of the relative opening end of box body (31) in proper order and with baffle (32) fixed connection, and one end that ejector pin (34) pierce through connection pad (2) is located the recess and can stretch into in the connecting hole.

3. A waste pipe as claimed in claim 2, wherein: ejector pin (34) set up to the cuboid structure, ejector pin (34) pierce through box body (31) blind end and connection pad (2) the position all set up with the rectangle through-hole of ejector pin (34) adaptation, stretch into the one end of recess and be close to one side of recess notch at ejector pin (34) and seted up the wedge face, the wedge face is set up by the tip slope of ejector pin (34).

4. A soil pipe as claimed in claim 1 or 3 wherein: the utility model provides a blow off pipe, including connection pad (2), draw-in groove (21), draw-in groove (4) are seted up on connection pad (2) internal surface to a blow off pipe, the length direction of draw-in groove (21) is parallel to each other with the axial direction of connection pad (2), and on the outer periphery of body (1) was fixed in bead (4), the length direction of bead (4) was parallel to the axial direction of body (1), bead (4) and draw-in groove (21) adaptation, and when ejector pin (34) stretched into the connecting hole, bead (4) stretched into in the recess.

5. A soil release pipe as claimed in claim 4, wherein: the sewage draining pipe further comprises a connecting assembly (5), a supporting rod (6) and a blind hole (7), wherein the connecting assembly (5) comprises a connecting pipe (51), mounting blocks (52), a second spring (53) and a connecting rod (54), the connecting pipe (51) is an arc-shaped pipe, two ends of the connecting pipe are closed ends, the mounting blocks (52) are provided with two blocks and are arranged in the connecting pipe (51), the second spring (53) is arranged in the connecting pipe (51) in a contraction state and is positioned between the two mounting blocks (52), two ends of the second spring (53) are respectively fixedly connected with the two mounting blocks (52), the connecting rod (54) is provided with two blocks, the connecting rod (54) is an arc-shaped rod, one end of the connecting rod (54) is fixedly connected with the mounting blocks (52) and the other end penetrates through the closed end of the connecting pipe (51) and is fixedly connected with one end of the ejector rod (34) far away from the, one end of the support rod (6) is rotatably arranged on the connecting pipe (51), the blind hole (7) is formed in the connecting disc (2), and one end, far away from the connecting pipe (51), of the support rod (6) can extend into the blind hole (7).

6. A waste pipe as claimed in claim 1, wherein: the utility model provides a blow off pipe still includes sealing strip (8), sealing strip (8) are made by flexible material, and sealing strip (8) are fixed on body (1) one end, and the one side that deviates from body (1) on sealing strip (8) is provided with the dentate structure of multirow annular slope, the most advanced orientation of dentate structure deviates from connection pad (2).

7. A soil release pipe as claimed in claim 6, wherein: the sealing strip (8) is arranged inside the body (1).

8. A waste pipe as claimed in claim 1, wherein: the utility model provides a blow off pipe still includes protecting crust (9), protecting crust (9) include two U type groove (91) and otic placode (92), two the tip in U type groove (91) is articulated each other, and U type groove (91) are 180 loop configuration and its notch towards the annular centre of a circle, and the width of U type groove (91) notch is unanimous with the width of connection pad (2), otic placode (92) are provided with two, and two otic placodes (92) are perpendicular to U type groove (91) axis direction respectively and fix on the other end in two U type grooves (91), correspond on two otic placodes (92) and have seted up the through-hole.