A flexible flow interception device

Abstract

The present invention provides a flexible flow interception device, belonging to the drainage technical field. The device includes: a flexible flow interception member having a rubber inner layer and a rubber outer layer, and forming a chamber through the rubber inner layer and the rubber outer layer. The rubber inner layer encloses to form a flow passage; a support ring is respectively embedded at two ends of the chamber, and a support member is embedded inside the rubber outer layer. The rubber inner layer can be flexibly expanded relative to the rubber outer layer to gradually close the flow passage, or the rubber inner layer can be flexibly contracted relative to the rubber outer layer to gradually open the flow passage; in the present invention, compared with a rigid outer shell, the rubber outer layer is lighter in weight, and has the characteristics of high construction efficiency and low cost; in addition, during the process of the rubber inner layer expanding relative to the rubber outer layer, the rubber outer layer always remains in a state of being in contact with the inner wall of the drainage pipe, effectively preventing residues in the sewage from accumulating between the rubber outer layer and the inner wall of the drainage pipe and being unable to be discharged.

Description

Technical Field

[0001] The present invention belongs to the technical field of drainage, and particularly relates to a flexible intercepting device. Background Art

[0002] An intercepting device is an intercepting facility applied to the outlet or drainage port of a diversion well. Its structure generally includes an outer casing and a rubber sleeve. A pressurized cavity is formed between the outer casing and the rubber sleeve. The ends of the rubber sleeve and the outer casing are sealed and connected through a flange. When pressurized gas is filled into the pressurized cavity, the rubber sleeve deforms inward relatively, the inner walls of the rubber sleeve fit together, and the flow passage is cut off.

[0003] However, the structure of the outer casing in the prior art generally adopts a rigid structure. When a pressurized cavity is formed between it and the rubber sleeve, its sealing performance is often not good. Moreover, due to its large volume and heavy weight, the rigid outer casing is extremely inconvenient to operate during the installation process, with low construction efficiency, high cost, and inconvenient later maintenance. Therefore, there is an urgent need for a flexible intercepting device that can solve the sealing problem and is convenient for installation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is how to provide a new type of flexible intercepting device to solve the technical problems of low construction efficiency, high cost, inconvenient later maintenance, and poor sealing performance existing in the intercepting device in the prior art.

[0005] To solve the above technical problems, the present invention provides a flexible intercepting device, including: a flexible intercepting member, the flexible intercepting member having a rubber inner layer and a rubber outer layer, and forming a chamber with a sealing structure through the rubber inner layer and the rubber outer layer. The rubber inner layer encloses to form a flow passage; two ends of the flexible intercepting member are respectively embedded with a support ring, and a support member is embedded inside the rubber outer layer. The rubber inner layer can be flexibly expanded relative to the rubber outer layer to gradually close the flow passage, or the rubber inner layer can be flexibly contracted relative to the rubber outer layer to gradually open the flow passage. During the expansion or contraction process of the rubber inner layer, the support member and the support ring are used to limit the deformation of the rubber outer layer; wherein, at least one inlet / outlet for filling or releasing a pressurized medium is opened on the chamber.

[0006] Optionally, the two ends of the flexible intercepting member are respectively a connection end and a tail end, and a connection portion is provided on the connection end; the support member includes a plurality of support rods, the plurality of support rods are embedded inside the rubber outer layer, and one end of each support rod abuts against the support ring on the tail end, and the other end abuts against the support ring on the connection end.

[0007] Optionally, the chamber has three pressurizing chambers to evenly divide the inner chamber of the chamber into three stamping parts. The rubber inner layer of any one of the pressurizing chambers can be flexibly expanded or contracted relative to its corresponding rubber outer layer; an inlet / outlet is provided on each of the pressurizing chambers; the number of the support rods is three, and each of the support rods is distributed at the middle part of a corresponding pressurizing chamber.

[0008] Optionally, the inlet / outlet is provided on the connecting part and passes through the connecting end;

[0009] The inlet / outlet is located between the rubber inner layer and the rubber outer layer and is distributed at the middle part of the corresponding pressurizing chamber.

[0010] Optionally, at the middle part of the inner surface of the rubber inner layer, a convex structure is provided in a circumferential distribution manner for contacting each other to close the flow channel during the expansion of the rubber inner layer.

[0011] Optionally, the device further includes: air nozzles having the same number as the inlet / outlets. Each air nozzle includes: an air inlet end and an air outlet end. The air outlet end passes through the inlet / outlet and is connected to the chamber, and the air inlet end is placed outside the chamber.

[0012] Optionally, the air nozzle further includes: a sealing end. The sealing end and the air outlet end are provided in the axial direction of the air nozzle and are placed outside the chamber. The air inlet end is provided on the side wall of the air nozzle, and the air inlet direction of the air inlet end is perpendicular to the axial direction of the air nozzle; a sealing cap, which is detachably connected to the sealing end.

[0013] Optionally, the device further includes: a charging / discharging gas assembly. One end of the charging / discharging gas assembly passes through the inlet / outlet and is connected to the chamber, and the other end is externally connected to an air compressor to charge or discharge the chamber; the charging / discharging gas assembly includes: a gas collecting pipe, which includes: gas collecting outlets having the same number as the air nozzles and a gas collecting inlet. Each gas collecting outlet is correspondingly connected to an air inlet end; a ventilation pipe, one end of which is connected to the gas collecting inlet and the other end is externally connected to the air compressor.

[0014] Optionally, a notch structure for preventing the air nozzle from rotating is provided at the connection part between the air nozzle and the inlet / outlet; the notch structure includes: a square notch one provided on the side wall of the air nozzle; a square notch two provided inside the inlet / outlet; wherein, the square notch one and the square notch two are clamped with each other.

[0015] Optionally, it further includes a plurality of connecting buckles; when it is necessary to fix the air charging and discharging assembly to an external fixing surface, the connecting buckles are sleeved on the gas collecting pipe and fixedly connected to the external fixing surface.

[0016] Beneficial effects:

[0017] A flexible intercepting device provided by the present invention directly sets a rubber inner layer and a rubber outer layer on the flexible intercepting member, and directly forms a sealed chamber through the rubber inner layer and the rubber outer layer, so as to replace the pressure chamber formed by the rigid outer casing and the outer wall of the rubber sleeve in the prior art. It can be understood that when the chamber is directly formed by the rubber inner layer and the rubber outer layer, since the chamber is formed inside the intercepting member, its sealing performance is better. At the same time, the rubber outer layer of the flexible intercepting member is lighter in weight than the rigid outer casing, and has the characteristics of high construction efficiency and low cost; in addition, since a support member and a support ring that prevent the rubber outer layer from undergoing elastic deformation are provided inside the rubber outer layer, when the rubber inner layer expands relative to the rubber outer layer, the rubber outer layer always remains in a state of being in contact with the inner wall of the drainage pipe, effectively preventing the residue in the sewage from accumulating between the rubber outer layer and the inner wall of the drainage pipe and being unable to be discharged.

[0018] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are specifically described below. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the flexible intercepting device provided by the embodiment of the present invention;

[0021] Figure 2 It is Figure 1 a side view of;

[0022] Figure 3 It is Figure 2 an A-A cross-sectional view of;

[0023] Figure 4 It is Figure 3 a B-B cross-sectional view of.

[0024] Reference numerals:

[0025] Inner rubber layer - 1;

[0026] Outer rubber layer - 2, support rod - 21;

[0027] Chamber - 3, connection end - 31, connection part - 311, tail end - 32, flange ring - 33, tail ring - 34, inlet / outlet - 35;

[0028] Flow - through channel - 4;

[0029] Inflation / deflation assembly - 5, air nozzle - 51, gas collecting pipe - 52, ventilation pipe - 53; Notch structure - 54; Inlet end - 511, outlet end - 512, sealing end - 513, sealing cap - 514, gas collecting outlet - 521, gas collecting inlet - 522, connection buckle - 523. Specific embodiments

[0030] Next, in combination with the drawings in the embodiments of this specification, the technical solutions in the embodiments of this specification will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention. At the same time, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of this specification are only for illustrative purposes and are not intended to limit the present invention.

[0031] Embodiment 1

[0032] Please refer to Figures 1-4 , a flexible flow - intercepting device provided by the embodiments of this specification. When it is used in a drainage pipe, it has the function of intercepting flow. The flexible flow - intercepting device specifically includes: a flexible flow - intercepting member.

[0033] In some embodiments, the flexible intercepting member has a rubber inner layer 1 and a rubber outer layer 2, and a chamber 3 with a sealed structure is formed by the rubber inner layer 1 and the rubber outer layer 2. The rubber inner layer 1 encloses to form a flow passage 4. A support ring is provided at each of the two end portions of the chamber 3, and a support member is provided inside the rubber outer layer 2. The rubber inner layer 1 can be flexibly expanded relative to the rubber outer layer 2 to gradually close the flow passage 4, or the rubber inner layer 1 can be flexibly contracted relative to the rubber outer layer 2 to gradually open the flow passage 4. At least one inlet / outlet 35 is provided in the chamber.

[0034] Specifically, both the rubber inner layer 1 and the rubber outer layer 2 in the flexible intercepting member can be made of rubber material, so as to achieve the dual purposes of the light weight of the rubber outer layer 2 and the easy elastic deformation of the rubber inner layer 1. A chamber 3 with a sealed structure is directly formed between the rubber inner layer 1 and the rubber outer layer 2, and at least one inlet / outlet 35 for inflating or deflating is provided in the chamber 3, so as to realize inflating or deflating the chamber 3 through the inlet / outlet 35, and the flow passage 4 is directly enclosed by the rubber inner layer 1. When the flexible intercepting device provided in the embodiment of this specification is applied to a drainage pipe for intercepting, gas is filled into the chamber 3 through the inlet / outlet 35. At this time, the rubber inner layer 1 begins to expand under the action of air pressure to gradually close the flow passage 4. When the drainage pipe needs to drain water, gas is discharged to the outside through the inlet / outlet 35. At this time, the rubber inner layer 1 begins to contract to gradually open the flow passage 4.

[0035] It should be noted that in the actual use process, since the rubber outer layer 2 of the flexible intercepting member needs to always fit with the inner wall of the drainage pipe, in order to prevent the rubber outer layer 2 from also undergoing elastic deformation during the inflation and expansion of the rubber inner layer 1, a support member is also provided inside the rubber outer layer 2 in the embodiment of this specification to support the entire contour of the rubber outer layer 2. The support member can include several support rods 21, and each of the several support rods 21 is embedded in the rubber outer layer 2 at equal intervals. One end of each support rod 21 abuts against the tail end 32, and the other end abuts against the connection end 31. At the same time, a support ring is provided at each of the two end portions of the chamber 3, further preventing the rubber outer layer 2 from having gaps with the inner wall of the drainage pipe due to elastic deformation during inflation and accumulating residues that cannot be discharged.

[0036] In some embodiments, the two end portions of the chamber 3 are a connection end 31 and a tail end 32 respectively; the support ring provided on the connection end 31 is a flange ring 33, the flange ring 33 is embedded in the connection end 31, and a connection portion 311 is provided on the connection end 31; the support ring provided on the tail end 32 is a tail ring 34, and the tail ring 34 is embedded in the tail end 32.

[0037] It can be understood that in the embodiments of this specification, on the one hand, in order to support the rubber outer layer 2 through the flange ring 33 and the tail ring 34 to maximally prevent its elastic deformation, and on the other hand, in order to ensure the sealing performance of the chamber 3. Therefore, as a preferred implementation manner, both the flange ring 33 and the tail ring 34 are directly embedded in the two ends of the chamber 3 by an inlay method. At the same time, during the actual installation process, a flange plate can be connected to the connecting portion 311, and the flexible throttling device can be fixed to an external support surface (such as a wall surface) through the flange plate to install and fix the entire flexible throttling device.

[0038] In some embodiments, the chamber 3 has three pressurizing chambers, and the three pressurizing chambers are adjacent to each other in pairs to divide the inner chamber of the chamber 3 into three independent chambers. The rubber inner layer 1 of any one of the pressurizing chambers can be independently flexibly expanded or contracted relative to its corresponding rubber outer layer 2; each pressurizing chamber is provided with an inlet / outlet 35. The inlet / outlet 35 is opened on the flange ring 33 and is located between the rubber inner layer 1 and the rubber outer layer 2.

[0039] Specifically, the chamber 3 is a chamber for inflating it to make it expand and then gradually close the flow channel 4. During the actual operation process, in order to be able to quickly inflate the chamber 3, quickly expand it and then quickly close the flow channel 4, the chamber 3 in the embodiments of this specification has three pressurizing chambers with equal volumes, and the three pressurizing chambers are adjacent to each other in pairs to divide the inner chamber of the chamber 3 into three pressurizing parts, and each pressurizing chamber is provided with an inlet / outlet 35. In this way, when inflation is required, the three chambers are inflated synchronously through the corresponding three inlet / outlets 35. Furthermore, the rubber inner layer 1 of each of the three pressurizing chambers expands flexibly synchronously relative to its corresponding rubber outer layer 2 to quickly close the flow channel 4. Similarly, when it is necessary to open the flow channel 4, the three pressurizing chambers deflate synchronously through the corresponding three inlet / outlets 35 to quickly open the flow channel 4.

[0040] Of course, those skilled in the art can understand that the chamber 3 having three pressurizing chambers with equal volumes is only one way of dividing the chamber. It can also be two pressurizing chambers with equal volumes, or four pressurizing chambers with equal volumes, or five pressurizing chambers with equal volumes, or more. The embodiments of this specification do not limit this. When the number of pressurizing chambers changes, the number of corresponding inlet / outlets 35 will also change synchronously. That is to say, as long as the speed of opening or closing the flow channel 4 can be controlled, the corresponding changes in the number of pressurizing chambers and the corresponding changes in the number of the corresponding inlet / outlets 35 are applicable to this specification and are within the protection scope of the present invention.

[0041] Meanwhile, the number of the support rods in this embodiment may be three, and each of the support rods is distributed at the middle part of a corresponding pressure chamber; in addition, the inlet and outlet are opened on the connecting part and pass through the connecting end; moreover, the inlet and outlet are located between the inner rubber layer and the outer rubber layer and are distributed at the middle part of a corresponding pressure chamber. It can be understood that when the support rod is distributed at the middle part of a corresponding pressure chamber, the outer rubber layer of the pressure chamber can be supported with the greatest force during the expansion process of the pressure chamber, so as to limit the outward tension of the deformation of the outer rubber layer. And distributing the inlet and outlet at the middle part of a corresponding pressure chamber can also make the air flow evenly and quickly spread to the whole pressure chamber when charging through the inlet and outlet.

[0042] Further, at the middle part of the inner surface of the inner rubber layer, a convex structure is arranged in a circumferential distribution manner for closing the flow channel by contacting each other during the expansion process of the inner rubber layer. It can be understood that during the expansion process of the inner rubber layer, its inner surface gradually expands and gathers, and then the flow surface of the flow channel gradually decreases. By arranging a convex structure in a circumferential distribution on its inner surface, after the inner surface expands and gathers, a "sealing" structure can be further formed through the mutual contact and pressing of the convex structures, so as to completely close the flow channel.

[0043] In some embodiments, the flexible shut-off device further includes: a charging and discharging assembly 5, one end of the charging and discharging assembly 5 passes through the inlet and outlet 35 and is connected to the chamber 3, and the other end is externally connected to an air compressor to charge or discharge the chamber 3. For the charging and discharging assembly 5, it may specifically include: air nozzles 51, a header pipe 52 and a ventilation pipe having the same number as the inlet and outlet 35. Each of the air nozzles 51 includes: an air inlet end 511 and an air outlet end 512, and the air outlet end 512 passes through the inlet and outlet 35 and is connected to the chamber 3; the header pipe 52 includes: gas collecting outlets 521 having the same number as the air nozzles 51 and a gas collecting inlet 522, and each of the gas collecting outlets 521 is correspondingly connected to an air inlet end 511; one end of the ventilation pipe is connected to the gas collecting inlet 522, and the other end is externally connected to the air compressor.

[0044] Specifically, the inflation and deflation assembly 5 is an assembly for inflating or deflating the chamber 3 through the inlet and outlet 35. Its air outlet end 512 of the air nozzle 51 passes through the inlet and outlet 35 and is connected to the chamber 3. Since the inlet and outlet 35 is opened on the flange ring 33 and is located between the inner rubber layer 1 and the outer rubber layer 2, the air outlet end 512 extending into the chamber 3 is just in communication with the internal space of the chamber 3, thus realizing the rapid inflation and deflation action. As one implementation manner of the embodiments of this specification, the number of pressurized chambers in the chamber 3 is three, that is, the number of inlets and outlets 35 is three, and correspondingly, the number of air nozzles 51 is also three. The air inlet ends 511 of each air nozzle 51 are collected through the header pipe 52, and after collection, are externally connected to an air compressor through a ventilation pipe, thus realizing the inflation and deflation action of the chamber 3. It can be understood that for the air compressor, an inflation valve for realizing the inflation action and a deflation valve for realizing the deflation action are provided inside it. Those skilled in the art can understand that corresponding conventional pipeline designs can be carried out according to the actual inflation and deflation action requirements, and this embodiment will not elaborate on this.

[0045] In some implementation manners, the air nozzle 51 further includes: a sealing end 513 and a sealing cap 514. Among them, the sealing end and the air outlet end are opened in the axial direction of the air nozzle, the air inlet end is opened on the side wall of the air nozzle, and the air inlet direction of the air inlet end is perpendicular to the axial direction of the air nozzle; the sealing cap is detachably connected to the sealing end (for example, threaded connection). A notch structure 51 for preventing the air nozzle 51 from rotating is provided at the connection part between the air nozzle 51 and the inlet and outlet 35. The notch structure 54 includes: a square notch one provided on the side wall of the air nozzle; a square notch two provided inside the inlet and outlet; where the square notch one and the square notch two are engaged with each other.

[0046] Specifically, during actual operation, the air nozzle 51 inserts its air outlet end 512 into the chamber 3 and is connected to the header pipe 52 through the air inlet end 511. In order to ensure the sealing performance of the air nozzle 51 during the inflation process, a sealing end 513 is opened on the air nozzle 51 in the axial direction opposite to the opening of the air outlet end, and the sealing cap 514 is detachably connected to the sealing end 513, so as to further seal the air nozzle 51 during the inflation process. At the same time, in order to prevent the air nozzle 51 from rotating relative to the flange ring during operation, as a way to achieve anti-slip, a notch structure 51 for preventing the air nozzle 51 from rotating is provided at the connection part between the air nozzle 51 and the inlet and outlet 35. This notch structure can be a square notch one provided on the annular side wall of the air nozzle and a square notch two provided on the inner side of the annular inlet and outlet; by engaging the square notch one and the square notch two, the anti-rotation function between the two is realized.

[0047] In some embodiments, the flexible intercepting device further includes: a plurality of connecting buckles 523 (such as 2 connecting buckles); in this way, when it is necessary to fix the air charging and discharging assembly to an external fixing surface (such as a pipeline wall surface, etc.), the connecting buckles 523 are sleeved on the gas collecting pipe, and the connection with the external fixing surface can be realized through bolts or screws, and then the installation of the flexible intercepting device is completed.

[0048] It should be noted that for the installation scheme of the flexible intercepting device in this embodiment, a gland can be provided on the connecting portion of the connecting end of the flexible intercepting member and pressed against it, and the gland can be fixed to the external fixing surface (such as a pipeline wall surface, etc.) by means of fixed connection such as screws or bolts. This situation is applicable to drainage pipelines with a relatively small pipeline diameter. Of course, as another connection method, it can also be that after the flexible intercepting device extends into the drainage pipeline, fixing steel rings are directly provided on the supporting end and the tail end of the flexible intercepting member, and the flexible intercepting member is fixed to the inner wall of the pipeline through the fixing steel rings. This situation is applicable to drainage pipelines with a relatively large pipeline diameter. Those skilled in the art can understand that the above two installation schemes for the flexible intercepting device are only two operation forms of the flexible intercepting device, not limitations. In a specific operation environment, according to actual operation requirements, simple modifications and simple replacements are made to the corresponding structural parts, which can be understood as equivalent deformations of the embodiments of this specification, and it should not be understood that the equivalent deformed scheme is not the flexible intercepting device provided by this application. This is hereby clarified.

[0049] In summary, it can be understood that: a flexible intercepting device provided by the present invention directly provides a rubber inner layer and a rubber outer layer on the flexible intercepting member, and thus directly forms a sealed chamber through the rubber inner layer and the rubber outer layer, so as to replace the stamping wall formed by the rigid outer shell and the outer wall of the rubber sleeve in the prior art. It can be understood that when the chamber is directly formed by the rubber inner layer and the rubber outer layer, since the chamber is formed inside the intercepting member, its sealing performance is better. At the same time, the rubber outer layer of the flexible intercepting member is lighter in weight than the rigid outer shell, and has the characteristics of high construction efficiency and low cost; in addition, since a support member that hinders the elastic deformation of the rubber outer layer is provided inside the rubber outer layer, when the rubber inner layer expands relative to the rubber outer layer, the rubber outer layer always remains in a state of being in contact with the inner wall of the drainage pipeline, effectively preventing the accumulation of residues in the sewage between the rubber outer layer and the inner wall of the drainage pipeline and being unable to be discharged.

[0050] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A flexible water intercepting device, characterized in that, The device includes: A flexible shut-off member, which has a rubber inner layer and a rubber outer layer, and forms a chamber with a sealed structure through the rubber inner layer and the rubber outer layer. The rubber inner layer encloses to form a flow channel. At both ends of the flexible shut-off member, a support ring is respectively embedded. Inside the rubber outer layer, a support member is embedded. The rubber inner layer can be flexibly expanded relative to the rubber outer layer to gradually close the flow channel, or the rubber inner layer can be flexibly contracted relative to the rubber outer layer to gradually open the flow channel. During the expansion or contraction process of the rubber inner layer, the support member and the support ring are used to limit the deformation of the rubber outer layer; Wherein, at least one inlet / outlet for charging or releasing pressurized medium is provided on the chamber; The device further includes: Nozzles having the same number as the inlets / outlets. Each nozzle includes: an inlet end and an outlet end. The outlet end passes through the inlet / outlet and is connected to the chamber, and the inlet end is located outside the chamber; The nozzle further includes: A sealing end, which is provided in the axial direction of the nozzle together with the outlet end and is located outside the chamber. The inlet end is provided on the side wall of the nozzle, and the inlet direction of the inlet end is perpendicular to the axial direction of the nozzle; A sealing cap, which is detachably connected to the sealing end; At the connection part between the nozzle and the inlet / outlet, a notch structure is provided to prevent the nozzle from rotating; The notch structure includes: A square notch one provided on the side wall of the nozzle; A square notch two provided inside the inlet / outlet; Wherein, the square notch one and the square notch two are engaged with each other; A plurality of connecting buckles; When the gas charging / discharging assembly needs to be fixed to an external fixing surface, the connecting buckles are sleeved on the gas collecting pipe and fixedly connected to the external fixing surface; Both ends of the flexible shut-off member are respectively a connection end and a tail end, and a connection part is provided on the connection end; The support member includes a plurality of support rods, and the plurality of support rods are embedded inside the rubber outer layer. One end of each support rod abuts against the support ring on the tail end, and the other end abuts against the support ring on the connection end.

2. The flexible water intercepting device according to claim 1, characterized in that: The chamber has three pressurizing chambers to divide the inner chamber of the chamber into three pressurized parts. The rubber inner layer of any one of the pressurizing chambers can be flexibly expanded or contracted relative to its corresponding rubber outer layer; One inlet / outlet is provided on each pressurizing chamber; The number of the support rods is three, and each support rod is distributed at the middle part of a corresponding pressurizing chamber.

3. The flexible water intercepting device according to claim 2, characterized in that: The inlet / outlet is provided on the connection part and passes through the connection end; The inlet / outlet is located between the rubber inner layer and the rubber outer layer and is distributed at the middle part of the corresponding pressurizing chamber.

4. The flexible water intercepting device according to any one of claims 1-3, characterized in that: At the middle part of the inner surface of the rubber inner layer, a convex structure is provided in a circumferential distribution manner to contact each other during the expansion process of the rubber inner layer to close the flow channel.

5. The flexible water intercepting device according to claim 1, characterized in that, The device further includes: An air charging and discharging assembly, one end of the air charging and discharging assembly passes through the inlet and outlet and is connected to the chamber in communication, and the other end is externally connected to an air compressor to inflate or deflate the chamber; The air charging and discharging assembly includes: A gas collecting pipe, the gas collecting pipe includes: gas collecting outlets having the same number as the gas nozzles and a gas collecting inlet, and each of the gas collecting outlets is correspondingly connected to one of the intake ends; A ventilation pipe, one end of the ventilation pipe is connected to the gas collecting inlet, and the other end is externally connected to the air compressor.

Images