Flexible pneumatic cut-off device

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a flexible pneumatic cut-off device which comprises an outer cylinder, a rubber sleeve and a filter assembly. The middle of the outer cylinder is through; the rubber sleeve is arranged on the inner wall of the outer cylinder; the filtering assembly is arranged at the liquid inlet end of the outer cylinder and used for blocking sundries. The filter assembly is arranged, so that the rubber sleeve can be prevented from being scratched or broken by sundries, especially sharp objects such as large glass blocks and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a flexible pneumatic intercepting device. Background Art

[0002] The flexible intercepting device has an outer shell and a rubber sleeve, such as the flexible intercepting device and diversion well with patent number CN209975698U. A pressure chamber is formed between the outer shell and the rubber sleeve, and the rubber sleeve is built with a flow channel for water flow. By filling the pressure chamber with pressurized gas, the rubber sleeve is relatively deformed, the flow channel becomes smaller until the flow channel is cut off, and the flexible intercepting device is closed. After the pressure chamber is deflated, the rubber sleeve recovers its deformation, the flow channel gradually becomes larger to the flow channel, and the flexible intercepting device is opened. The flexible intercepting device is often used in sewage and rainwater, which are prone to carry a large amount of debris, and there may also be sharp debris that can easily scratch the rubber sleeve, which can easily cause damage to the flexible intercepting device or affect its service life. Utility Model Content

[0003] The purpose of the utility model is to provide a flexible pneumatic intercepting device to achieve the effect of protecting the rubber sleeve in view of the above-mentioned technical problems.

[0004] In view of this, the utility model provides a flexible pneumatic intercepting device, comprising:

[0005] An outer cylinder, the middle of which is through-hole;

[0006] A rubber sleeve, wherein the rubber sleeve is arranged on the inner wall of the outer cylinder;

[0007] A filter assembly is arranged at the liquid inlet end of the outer cylinder and is used to block debris.

[0008] In the technical solution, the filter assembly is provided to prevent debris, especially sharp objects such as large glass blocks, from scratching or breaking the rubber sleeve.

[0009] Furthermore, the filtering component comprises:

[0010] A fixing ring, which is detachably fixed in the outer cylinder through a connecting structure, and a pair of mounting shafts extend from the inner wall of the fixing ring toward the center of the circle;

[0011] The rotating member is in a round cake shape, and a mounting hole corresponding to the mounting shaft is opened on the outer wall of the rotating member. Two mounting shafts are respectively inserted into the mounting holes so that the rotating member is rotatably arranged on the mounting shaft, and a filter screen is arranged on the rotating member;

[0012] The driving structure is used to drive the rotating member to rotate.

[0013] Furthermore, the driving structure includes a connecting chain, one end of which is connected to the rubber sleeve, and the other end of which is connected to the rotating member.

[0014] In the present technical solution, when the flexible pneumatic intercepting device is in normal flow, when the rubber sleeve is not inflated, the rubber sleeve is not expanded, and the connecting chain is tightened to make the rotating part with the filter screen rotate tilted. At this time, the filter screen does not filter, and the flow rate can be guaranteed. The water flow can also wash away the debris on the filter screen, and the rubber sleeve is not easily damaged by sharp debris when it is not inflated. When interception is required, the rubber sleeve is inflated and expanded, pushing the rotating part to rotate to a horizontal state for filtering. At this time, the rubber sleeve is inflated and is more likely to be cut by sharp debris. When interception is performed, the flow channel is closed, and the water flow at the liquid inlet end of the outer cylinder will be more turbulent, which makes it easier for sharp debris to cut the inflated rubber sleeve. Therefore, the filter screen is rotated to a horizontal state to protect the rubber sleeve.

[0015] Furthermore, the connection structure includes a convex ring arranged on the inner wall of the outer cylinder, the convex ring is provided with a threaded hole, the fixing ring is provided with a connecting hole matching the threaded hole, and also includes a bolt that can pass through the connecting hole and be threadedly connected to the threaded hole.

[0016] In the technical solution, this connection structure can replace the filter assembly as a whole, which is convenient for maintenance and replacement.

[0017] Furthermore, a limiting plate is provided on the upper end surface of the fixing ring, and the limiting plate is used to limit the rotation of the rotating member.

[0018] Furthermore, an air inlet is provided on the outer cylinder, and the air inlet allows gas to flow into the rubber sleeve.

[0019] Furthermore, a mounting seat is provided on the outer cylinder.

[0020] Furthermore, connecting flanges are provided at both ends of the outer cylinder.

[0021] The beneficial effects of the utility model are:

[0022] 1. Setting up the filter assembly can prevent debris, especially sharp objects such as large glass blocks, from scratching or breaking the rubber sleeve.

[0023] 2. When the flexible pneumatic intercepting device is in normal flow, when the rubber sleeve is not inflated, the rubber sleeve is not expanded, and the connecting chain is tightened to make the rotating part with the filter screen rotate tilted. At this time, the filter screen does not filter, and the flow rate can be guaranteed. The water flow can also wash away the debris on the filter screen, and the rubber sleeve is not easily damaged by sharp debris when it is not inflated. When interception is required, the rubber sleeve is inflated and expanded, pushing the rotating part to rotate to a horizontal state for filtering. At this time, the rubber sleeve is inflated and is more likely to be cut by sharp debris. In addition, the flow channel is closed during interception, and the water flow at the liquid inlet end of the outer cylinder will be more turbulent, which makes it easier for sharp debris to cut the inflated rubber sleeve. Therefore, the filter screen is turned to a horizontal state to protect the rubber sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model;

[0025] Figure 2 It is an exploded view of the utility model;

[0026] Figure 3 is a stereogram of the filter assembly;

[0027] Figure 4 is a cross-sectional view of the shut-off device when the rubber sleeve is not expanded;

[0028] Figure 5 is a cross-sectional view of the shut-off device after the rubber sleeve is expanded;

[0029] The symbols in the figure are:

[0030] 1. Outer cylinder; 2. Rubber sleeve; 3. Filter assembly; 4. Liquid inlet end; 5. Air inlet; 6. Mounting seat; 7. Connecting flange; 8. Connecting chain; 9. Fixed ring; 10. Rotating part; 11. Mounting shaft; 12. Mounting hole; 13. Filter screen; 14. Convex ring; 15. Threaded hole; 16. Connecting hole; 17. Limiting piece. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0032] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0035] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0036] like Figure 1-5 As shown, a flexible pneumatic intercepting device comprises an outer tube 1, a rubber sleeve 2 and a filter assembly 3. The outer tube 1 is through-through; the rubber sleeve 2 is arranged on the inner wall of the outer tube 1; the filter assembly 3 is arranged at the liquid inlet end 4 of the outer tube 1, and the filter assembly 3 is used to block foreign matter. An air inlet 5 is provided on the outer tube 1, and the air inlet 5 allows gas to pass into the rubber sleeve 2. A mounting seat 6 is provided on the outer tube 1. Connecting flanges 7 are provided at both ends of the outer tube 1.

[0037] The filter assembly 3 can prevent debris, especially sharp objects such as large glass blocks, from scratching or breaking the rubber sleeve 2. The filter assembly 3 includes a fixed ring 9, a rotating member 10 and a driving structure. The fixed ring 9 is detachably fixed in the outer cylinder 1 through a connecting structure, and a pair of mounting shafts 11 extend from the inner wall of the fixed ring 9 toward the center of the circle; the rotating member 10 is in a round shape, and a mounting hole 12 corresponding to the mounting shaft 11 is opened on the outer wall of the rotating member 10. The two mounting shafts 11 are respectively inserted into the mounting holes 12 so that the rotating member 10 is rotatably set on the mounting shaft 11, and a filter screen 13 is arranged on the rotating member 10; the driving structure is used to drive the rotating member 10 to rotate.

[0038] The driving structure includes a connecting chain 8 , one end of which is connected to the rubber sleeve 2 , and the other end of which is connected to the rotating member 10 .

[0039] like Figure 4As shown, when the flexible pneumatic intercepting device is in normal flow, when the rubber sleeve 2 is not inflated, the rubber sleeve 2 is not expanded, and the connecting chain 8 is tightened to make the rotating member 10 with the filter 13 rotate and tilt. At this time, the filter 13 does not filter, and the flow rate can be guaranteed. The water flow can also wash away the debris on the filter 13, and the rubber sleeve 2 is not easily damaged by sharp debris when it is not inflated. When interception is required, as shown in FIG. Figure 5 As shown, the rubber sleeve 2 is inflated and expands, pushing the rotating member 10 to rotate to a horizontal state for filtering. At this time, the rubber sleeve 2 is inflated and is more likely to be cut by sharp debris, and the flow channel is closed during interception. The water flow at the liquid inlet end 4 of the outer cylinder 1 will be more turbulent, making it easier for sharp debris to cut the inflated rubber sleeve 2. Therefore, the filter screen 13 is rotated to a horizontal state to protect the rubber sleeve 2.

[0040] The connection structure includes a convex ring 14 arranged on the inner wall of the outer tube 1, a threaded hole 15 is arranged on the convex ring 14, a connection hole 16 matching the threaded hole 15 is opened on the fixing ring 9, and a bolt that can pass through the connection hole 16 and be threadedly connected to the threaded hole 15. This connection structure can replace the filter assembly 3 as a whole, and is convenient for maintenance and replacement.

[0041] A limiting piece 17 is disposed on the upper end surface of the fixing ring 9 , and the limiting piece 17 is used to limit the rotation of the rotating member 10 .

[0042] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A flexible pneumatic shutoff device, characterized in that ,include: An outer cylinder (1), wherein the middle of the outer cylinder (1) is through-connected; A rubber sleeve (2), wherein the rubber sleeve (2) is arranged on the inner wall of the outer cylinder (1); A filter assembly (3) is arranged at the liquid inlet end (4) of the outer cylinder (1), and the filter assembly (3) is used to block foreign matter.

2. A flexible pneumatic shutoff device according to claim 1, characterized in that: The filter assembly (3) comprises: A fixing ring (9), the fixing ring (9) being detachably fixed in the outer cylinder (1) via a connecting structure, and a pair of mounting shafts (11) extending from the inner wall of the fixing ring (9) towards the center of the circle; A rotating member (10), the rotating member (10) is in a round cake shape, a mounting hole (12) corresponding to the mounting shaft (11) is opened on the outer wall of the rotating member (10), two mounting shafts (11) are respectively inserted into the mounting holes (12) so that the rotating member (10) is rotatably mounted on the mounting shaft (11), and a filter screen (13) is arranged on the rotating member (10); A driving structure is used to drive the rotating member (10) to rotate.

3. A flexible pneumatic shutoff device according to claim 2, characterized in that: The driving structure comprises a connecting chain (8), one end of the connecting chain (8) is connected to the rubber sleeve (2), and the other end is connected to the rotating member (10).

4. A flexible pneumatic shutoff device according to claim 2, characterized in that: The connection structure comprises a convex ring (14) arranged on the inner wall of the outer cylinder (1), a threaded hole (15) being arranged on the convex ring (14), a connecting hole (16) matching the threaded hole (15) being opened on the fixing ring (9), and a bolt capable of passing through the connecting hole (16) and being threadedly connected to the threaded hole (15).

5. A flexible pneumatic shutoff device according to claim 3, characterized in that: A limiting plate (17) is provided on the upper end surface of the fixing ring (9), and the limiting plate (17) is used to limit the rotation of the rotating member (10).

6. A flexible pneumatic shutoff device according to claim 1, characterized in that: The outer cylinder (1) is provided with an air inlet (5), and the air inlet (5) allows gas to flow into the rubber sleeve (2).

7. A flexible pneumatic shutoff device according to claim 1, characterized in that: The outer cylinder (1) is provided with a mounting seat (6).

8. A flexible pneumatic shutoff device according to claim 1, characterized in that: Both ends of the outer cylinder (1) are provided with connecting flanges (7).

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