Sealed valve with leak-proof function

Abstract

The utility model discloses a sealing valve with an anti-leakage function, and relates to the technical field of sealing valves. The sealing valve comprises a sealing valve body, flanges are fixedly connected to the two sides of the sealing valve body, a supporting pipe is fixedly connected to one side of each flange, a containing groove is formed in the outer surface of each supporting pipe, a sealing assembly is arranged on the outer surface of each containing groove in a sleeved mode, and the outer surface of each containing groove is in threaded connection with a limiting sleeve. An inflation assembly is arranged on the outer surface of the sealing valve body. The elastic air bag can better seal the position, making contact with the inner wall of the pipeline, of the supporting pipe under the assistance of the inflation assembly, and the sealing assembly is located in the pipeline, so that the phenomenon that the sealing assembly is damaged due to external factors during sealing operation is avoided; in addition, the position where the sealing valve body is connected with the pipeline through the flange can be sealed through the sealing gasket, and therefore the phenomenon of leakage is not prone to occurring at the joint of the sealing valve body and the pipeline under the double-sealing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of airtight valves, and in particular relates to an airtight valve with an anti-leakage function. Background Art

[0002] The core function of a sealing valve is to prevent the medium from leaking out of the valve, which includes sealing gas, liquid or solid particles. By designing a reasonable sealing structure and selecting suitable sealing materials, the valve can maintain good sealing performance under various working conditions, thereby avoiding energy waste and environmental pollution caused by leakage.

[0003] In the prior art, when the sealing valve is connected to the pipeline, the connection is mainly carried out through flanges. When the sealing valve is connected to the flange on the pipeline, a sealing gasket needs to be added between the two flanges so that the two flanges squeeze the sealing gasket. If the gasket is not installed correctly, or the gasket is not evenly distributed with the flange pressure, leakage is likely to occur. In addition, the flange connection is exposed to the external environment, and various external forces and environmental factors may cause damage to it, resulting in leakage and seepage at the connection between the sealing valve and the pipeline. In summary, when the sealing valve and the pipeline are sealed and connected through flanges and gaskets, it is easy to cause leakage at the connection between the pipeline and the sealing valve when transporting the medium.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a closed valve with an anti-leakage function to overcome the above technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model is a closed valve with an anti-leakage function, comprising a sealing valve body, flanges are fixedly connected to the two sides of the sealing valve body, a support tube is fixedly connected to one side of the flange, a placement groove is opened on the outer surface of the support tube, a sealing component is sleeved on the outer surface of the placement groove, a limiting sleeve is threadedly connected to the outer surface of the placement groove, an inflation component is arranged on the outer surface of the sealing valve body, and the sealing component is sleeved on one end of the inflation component.

[0008] Furthermore, the sealing component comprises an elastic airbag, the elastic airbag is sleeved on the outer surface of the placement groove, and the bottom of the elastic airbag is fixedly connected to the air tube.

[0009] Furthermore, a connecting groove is provided on the outer side of the sealing valve body, a through hole is provided on the inner wall of the placement groove, and the air pipe is movably connected to the through hole.

[0010] Furthermore, the inflation component includes a connecting tube, one end of the connecting tube is fixedly connected to the inner wall of the connecting groove, an air cavity is opened inside the outer wall of the sealing valve body, one end of the connecting tube is connected to the air cavity, an air valve is fixedly connected to the outer surface of the sealing valve body, the bottom end of the air valve is located inside the air cavity, the air pipe is sleeved on the outside of the connecting tube, and a sealing cover is threadedly connected to the outer surface of the air valve.

[0011] Furthermore, a rotation groove is formed on the inner wall of the connection groove, a rotation shaft is rotatably connected inside the rotation groove, and a shielding plate is fixedly connected to the outer surface of the rotation shaft.

[0012] Furthermore, a hair band is provided on the outer surface of the trachea.

[0013] Furthermore, a pressure gauge is fixedly mounted on the outer surface of the sealing valve body, and a detection end of the pressure gauge is located inside the air cavity.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model moves the supporting tube at one end of the sealing valve body to the inside of the pipeline, and then connects the sealing valve body and the supporting tube through the flange, then rotates the sealing cover off the valve mouth, and enables the inflation device to convey airflow to the inside of the air cavity through the valve mouth, and the airflow inside the air cavity directly flows to the inside of the elastic airbag under the guidance of the connecting tube and the air pipe, thereby causing the elastic airbag to expand, and when the elastic airbag is in close contact with the inner wall of the pipeline, the inflation operation is stopped. In summary, the placement groove and the limiting sleeve can limit the elastic airbag, so that the elastic airbag will not move around when inflating, so that the elastic airbag can better seal the position where the supporting tube contacts the inner wall of the pipeline, and the sealing component is inside the pipeline, so that the sealing component is not easily damaged due to external factors during the sealing operation, and the position where the sealing valve body and the pipeline are connected by the flange can also be sealed by a sealing gasket, so that the connection between the sealing valve body and the pipeline is not easy to leak under the action of double sealing.

[0016] 2. The pressure gauge of the utility model can monitor the air pressure inside the air cavity. Since the elastic airbag is connected to the air cavity through the connection of the trachea and the connecting pipe, the air pressure inside the elastic airbag and the air cavity is the same. When the elastic airbag is damaged, the internal air pressure will also change. At this time, the air pressure inside the air cavity will change along with the air pressure inside the elastic airbag. At this time, the pointer on the pressure gauge can rotate. In summary, the operator can monitor the overall sealing of the elastic airbag through the pressure gauge. When the value on the pressure gauge changes significantly, it means that the elastic airbag is damaged. At this time, the operator can replace the elastic airbag in time with the reminder of the pressure gauge, thereby avoiding leakage at the connection between the sealing valve body and the pipeline due to damage to the elastic airbag.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the external contour structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the inflatable component of the utility model;

[0021] Figure 3 This is a schematic diagram of the air cavity structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the connection slot of the utility model;

[0023] Figure 5 For the utility model Figure 4 A is an enlarged structural diagram;

[0024] Figure 6 This is a schematic diagram of the sealing assembly structure of the utility model;

[0025] Figure 7 This is a schematic diagram of the support tube structure of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Sealing valve body; 2. Flange; 3. Support tube; 4. Placement groove; 5. Sealing assembly; 501. Elastic airbag; 502. Air pipe; 6. Limit sleeve; 7. Inflatable assembly; 701. Connecting tube; 702. Air cavity; 703. Valve; 704. Sealing cover; 8. Connecting groove; 9. Through hole; 10. Rotating groove; 11. Rotating shaft; 12. Shielding plate; 13. Hairband; 14. Pressure gauge. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] See also Figure 1-Figure 7 As shown, the utility model is a closed valve with an anti-leakage function, including a sealing valve body 1, flanges 2 are fixedly connected to both sides of the sealing valve body 1, a support tube 3 is fixedly connected to one side of the flange 2, a placement groove 4 is provided on the outer surface of the support tube 3, a sealing component 5 is sleeved on the outer surface of the placement groove 4, a limiting sleeve 6 is threadedly connected to the outer surface of the placement groove 4, an inflation component 7 is provided on the outer surface of the sealing valve body 1, and the sealing component 5 is sleeved on one end of the inflation component 7.

[0031] When the sealing valve body 1 is installed at one end of the pipeline, the supporting tube 3 at one end of the sealing valve body 1 is inserted into the interior of the pipeline, and then the sealing valve body 1 is connected to the pipeline through the flange 2. Then, the sealing component 5 is inflated through the inflation component 7 to make the sealing component 5 expand and contact with the inner wall of the pipeline. At this time, the sealing component 5 completes the sealing with the assistance of the supporting tube 3 and the limiting sleeve 6.

[0032] The sealing component 5 can be moved to the inside of the pipeline under the drive of the support tube 3. At the same time, the inflation component 7 can inflate the sealing component 5 and make the sealing component 5 contact with the inner wall of the pipeline more closely. At this time, the sealing component 5 is not easy to be misplaced under the restriction of the placement groove 4 and the limiting sleeve 6, so that the sealing component 5 can better seal the contact position between the support tube 3 and the pipeline. In addition, the sealing component 5 is inside the pipeline, so that the sealing component 5 will not be damaged by external factors during operation. At this time, the position connected by the flange 2 can also be sealed by the sealing gasket, so that the connection between the sealing valve body 1 and the pipeline is not easy to leak under the action of double sealing.

[0033] In one embodiment, for the above-mentioned sealing component 5, the sealing component 5 includes an elastic airbag 501, and the elastic airbag 501 is sleeved on the outer surface of the placement groove 4, and the bottom of the elastic airbag 501 is fixedly connected with an air pipe 502.

[0034] The inflation component 7 can inflate the elastic airbag 501 through the air pipe 502. At the same time, when the limiting sleeve 6 is rotated down from one end of the support tube 3, the elastic airbag 501 can be directly moved out from the outer surface of the placement groove 4, so that the elastic airbag 501 is more convenient to replace.

[0035] In one embodiment, for the above-mentioned sealing valve body 1, a connecting groove 8 is opened on the outer side of the sealing valve body 1, a through hole 9 is opened on the inner wall of the placement groove 4, the air pipe 502 is movably connected to the through hole 9, and the inflation component 7 includes a connecting pipe 701, one end of the connecting pipe 701 is fixedly connected to the inner wall of the connecting groove 8, an air cavity 702 is opened inside the outer wall of the sealing valve body 1, one end of the connecting pipe 701 is connected to the air cavity 702, and an air valve 703 is fixedly connected to the outer surface of the sealing valve body 1, and the bottom end of the air valve 703 is inside the air cavity 702, the air pipe 502 is sleeved on the outer side of the connecting pipe 701, and the outer surface of the air valve 703 is threadedly connected to a sealing cover 704.

[0036] When the elastic airbag 501 is moved to the outer surface of the placement groove 4, one end of the air pipe 502 can be moved to the inside of the connecting groove 8 through the through hole 9. At this time, one end of the air pipe 502 is directly sleeved on the outer surface of the connecting pipe 701. When the sealing valve body 1 and the pipeline are connected together through the flange 2, the sealing cover 704 is rotated off the valve mouth 703, and then the inflation device is sleeved on the outside of the valve mouth 703, so that the inflation device inflates the inside of the air cavity 702 through the valve mouth 703. The airflow inside the air cavity 702 is connected between the connecting pipe 701 and the air Under the guidance of tube 502, the air can flow into the interior of the elastic airbag 501 and expand the elastic airbag 501. After the inflation is completed, the sealing cover 704 is rotated to the outside of the valve mouth 703 again. The setting of the air cavity 702 allows the sealing components 5 at both ends of the sealing valve body 1 to be inflated at the same time, and the setting of the connecting tube 701 allows the air pipe 502 to be directly moved down from the outside of the connecting tube 701 when the elastic airbag 501 is replaced. After the new sealing component 5 is installed, the inflation component 7 can also inflate the new sealing component 5 normally.

[0037] In one embodiment, for the above-mentioned connection groove 8 , a rotation groove 10 is opened on the inner wall of the connection groove 8 , a rotation shaft 11 is rotatably connected inside the rotation groove 10 , and a shielding plate 12 is fixedly connected to the outer surface of the rotation shaft 11 .

[0038] The shielding plate 12 can rotate under the drive of the rotating shaft 11, so that the shielding plate 12 can shield the connecting pipe 701 and the air pipe 502 connected together inside the connecting groove 8, so that some external factors will not damage the connection between the connecting pipe 701 and the air pipe 502.

[0039] In addition, in a specific implementation, the friction between the shielding plate 12 and the inner wall of the connecting groove 8 can be set to be relatively large, so that when the shielding plate 12 is rotated into the inside of the connecting groove 8, it will not be rotated out of the inside of the connecting groove 8 at will without the influence of a large external force.

[0040] In one embodiment, for the above-mentioned air tube 502 , a hair band 13 is provided on the outer surface of the air tube 502 .

[0041] When the air pipe 502 is sleeved on the outside of the connecting pipe 701 , the air pipe 502 outside the connecting pipe 701 can be squeezed by the hair band 13 , so that the air pipe 502 and the connecting pipe 701 can be connected together more tightly.

[0042] In one embodiment, for the sealing valve body 1 , a pressure gauge 14 is fixedly mounted on the outer surface of the sealing valve body 1 , and a detection end of the pressure gauge 14 is located inside the air cavity 702 .

[0043] When the sealing component 5 is inflated by the inflation component 7, the operator can observe the pressure gauge 14. At this time, the direction of the pointer on the pressure gauge 14 represents the pressure value inside the air cavity 702 and the elastic airbag 501. When the pressure value reaches a certain level, the elastic airbag 501 is also in close contact with the inner wall of the pipeline. At this time, the inflation operation is directly stopped. When the sealing valve body 1 and the pipeline are transporting the medium, the operator can check the pressure gauge 14. When the value on the pressure gauge 14 changes significantly, the elastic airbag 501 is damaged. At this time, the operator can remove the sealing valve body 1 from one end of the pipeline and check the elastic airbag 501. The setting of the pressure gauge 14 allows the operator to more intuitively check the sealing effect of the elastic airbag 501. At the same time, when the elastic airbag 501 is damaged and the sealing performance deteriorates, the operator can also replace the elastic airbag 501 in time.

[0044] According to the above technical solution, 1. the support tube 3 at one end of the sealing valve body 1 is moved to the inside of the pipeline, and then the sealing valve body 1 and the support tube 3 are connected together through the flange 2. Then, the sealing cover 704 is rotated off the valve mouth 703, and the inflator is made to deliver airflow to the inside of the air cavity 702 through the valve mouth 703. The airflow inside the air cavity 702 flows directly to the inside of the elastic airbag 501 under the guidance of the connecting tube 701 and the air pipe 502, so that the elastic airbag 501 is expanded. When the elastic airbag 501 is After the airbag 501 is in close contact with the inner wall of the pipeline, the inflation operation is stopped. In summary, the placement groove 4 and the limiting sleeve 6 can limit the elastic airbag 501, so that the elastic airbag 501 will not move around when inflating, so that the elastic airbag 501 can better seal the position where the support tube 3 contacts the inner wall of the pipeline. In addition, the sealing component 5 is inside the pipeline, so that the sealing component 5 is not damaged due to external factors during the sealing operation. In addition, the sealing valve body 1 and the pipeline are connected by the flange 2. The connection position can also be sealed by a sealing gasket, so that the sealing valve body 1 and the pipeline connection are not prone to leakage under the effect of double sealing; 2. The barometer 14 can monitor the air pressure inside the air cavity 702. Since the elastic airbag 501 is connected to the air cavity 702 under the connection of the air pipe 502 and the connecting pipe 701, the air pressure inside the elastic airbag 501 and the air cavity 702 is the same. When the elastic airbag 501 is damaged, the internal air pressure will also change. At this time, the air pressure inside the air cavity 702 will As the air pressure inside the elastic airbag 501 changes, the pointer on the pressure gauge 14 can rotate. In summary, the operator can monitor the overall sealing of the elastic airbag 501 through the pressure gauge 14. When the value on the pressure gauge 14 changes significantly, it indicates that the elastic airbag 501 is damaged. At this time, the operator can replace the elastic airbag 501 in time with the reminder of the pressure gauge 14, thereby avoiding leakage at the connection between the sealing valve body 1 and the pipeline due to damage to the elastic airbag 501.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A closed valve with anti-leakage function, comprising a sealing valve body (1), characterized in that: Flanges (2) are fixedly connected to both sides of the sealing valve body (1), a support tube (3) is fixedly connected to one side of the flange (2), a placement groove (4) is provided on the outer surface of the support tube (3), a sealing component (5) is sleeved on the outer surface of the placement groove (4), a limiting sleeve (6) is threadedly connected to the outer surface of the placement groove (4), an inflation component (7) is provided on the outer surface of the sealing valve body (1), and the sealing component (5) is sleeved on one end of the inflation component (7).

2. A sealed valve with anti-leakage function according to claim 1, characterized in that: The sealing assembly (5) comprises an elastic airbag (501), the elastic airbag (501) is sleeved on the outer surface of the placement groove (4), and the bottom of the elastic airbag (501) is fixedly connected to an air pipe (502).

3. A sealed valve with anti-leakage function according to claim 2, characterized in that: The outer side of the sealing valve body (1) is provided with a connection groove (8), the inner wall of the placement groove (4) is provided with a through hole (9), and the air pipe (502) is movably connected to the through hole (9).

4. A sealed valve with anti-leakage function according to claim 3, characterized in that: The inflation component (7) comprises a connecting tube (701), one end of which is fixedly connected to the inner wall of the connecting groove (8); an air cavity (702) is provided inside the outer wall of the sealing valve body (1); one end of the connecting tube (701) is connected to the air cavity (702); an air valve (703) is fixedly connected to the outer surface of the sealing valve body (1); the bottom end of the air valve (703) is located inside the air cavity (702); the air pipe (502) is sleeved on the outer side of the connecting tube (701); and a sealing cover (704) is threadedly connected to the outer surface of the air valve (703).

5. A sealed valve with anti-leakage function according to claim 4, characterized in that: The inner wall of the connection groove (8) is provided with a rotation groove (10), the interior of the rotation groove (10) is rotatably connected to a rotation shaft (11), and the outer surface of the rotation shaft (11) is fixedly connected to a shielding plate (12).

6. A sealed valve with anti-leakage function according to claim 5, characterized in that: The outer surface of the air pipe (502) is covered with a hair band (13).

7. A sealed valve with anti-leakage function according to claim 6, characterized in that: A pressure gauge (14) is fixedly mounted on the outer surface of the sealing valve body (1), and a detection end of the pressure gauge (14) is located inside the air cavity (702).

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