CN213451759U

CN213451759U - Flap valve that leakproofness is high

Info

Publication number: CN213451759U
Application number: CN202022575402.8U
Authority: CN
Inventors: 刘光明; 殷渊
Original assignee: Changzhou Longjin Machinery Co ltd
Current assignee: Changzhou Longjin Machinery Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-06-15
Anticipated expiration: 2030-11-09

Abstract

The utility model relates to a flap valve that leakproofness is high relates to the valve equipment field, and it includes the valve body and is located the case of valve body, the case is the disc and along diameter position fixedly connected with valve shaft, the valve shaft is connected with and is used for realizing case pivoted actuating mechanism, the both ends of valve shaft pass the valve body setting and with rotate between the valve body and be connected, the valve body internal face is provided with the seal assembly who sets up with the laminating of case border, seal assembly is including the expansion pipe of rubber system, the expansion pipe has the air-blower through the outside pipe connection of valve body. This application has the effect that improves flap valve leakproofness.

Description

Flap valve that leakproofness is high

Technical Field

The application relates to the field of valve equipment, in particular to a flap valve with high sealing performance.

Background

The flap valve, also known as a butterfly valve, is a simple and practical regulating valve, and is often used for the on-off control of low-pressure pipeline media. The flap valve generally uses a disc as a closing member, and the opening and closing of the flap valve are realized by driving the closing member to rotate around a valve shaft through a driving member.

The flap valve in the related art can generally realize the rotation of the closing member by connecting an air/oil cylinder and a connecting rod mechanism, or directly realize the rotation by connecting a driving motor with a rotating shaft of the closing member, and the commonly used closing member is a single-layer metal disc member and can realize the opening and closing of the flap valve by matching with a cylindrical valve body inner cavity.

In view of the above related technologies, the inventor believes that in the actual use process, the single-layer closing member is easy to deform after long-term use, and particularly in a high-temperature environment, the deformation after long-term use is more obvious, and the sealing performance of the flap valve is easy to decrease after the deformation, so that the normal use of the flap valve is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that self deformation leads to the leakproofness to descend easily after long-term the use of current flap valve, the application provides a flap valve that leakproofness is high.

The application provides a flap valve that leakproofness is high adopts following technical scheme:

the utility model provides a flap valve that leakproofness is high, includes the valve body and is located the case of valve body, the case is the disc and along diameter position fixedly connected with valve shaft, the valve shaft is connected with and is used for realizing case pivoted actuating mechanism, the both ends of valve shaft pass the valve body setting and with rotate between the valve body and be connected, the valve body internal face is provided with the seal assembly who sets up with the laminating of case border, seal assembly is including the expansion pipe of rubber system, the expansion pipe has the air-blower through the outside pipe connection of valve body.

Through adopting above-mentioned technical scheme, after the case received actuating mechanism control and is in the closed condition, the air-blower aerifys in passing through the pipeline to the expansion pipe, the expansion pipe aerifys the back and laminates with the border of case, even when the flap valve takes place deformation for a long time after the case itself, the expansion pipe still can be effectual fills the space that exists to case border department to improve the leakproofness of this kind of flap valve when using greatly.

Preferably, an inwards concave mounting groove for placing the expansion pipe is formed in the joint of the inner wall of the valve body and the closed valve core, a sealing edge is arranged at the outer edge of the valve core, and the sealing edge is attached to the outer edge of the mounting groove when the valve core is in a closed state.

Through adopting above-mentioned technical scheme, the mounting groove can play certain guard action to the expansion pipe, reduces the case when rotating and the expansion pipe between produce the possibility of striking, also can reduce the possibility that the material that flows at a high speed produced destruction to the expansion pipe surface simultaneously, so the setting of mounting groove has effectively improved the life of expansion pipe. The setting of sealed borduring can make the inflation pipe inflation back and the valve core between the laminating degree higher, further improves the leakproofness of this kind of valve body.

Preferably, the mounting groove is provided with two and is located the both sides of valve shaft, the bottom surface of mounting groove is provided with the installed part, the installed part includes the perpendicular one-level mounting bar that sets up with the mounting groove bottom surface and the second grade mounting bar parallel with the mounting groove bottom surface, one-level mounting bar and mounting groove bottom surface fixed connection, the border fixed connection of mounting groove bottom surface is kept away from with the one-level mounting bar to the second grade mounting bar, the cross-section of installed part is T shape, the installing port has been seted up to the surface of expansion pipe, when the expansion pipe was installed to the mounting groove, the expansion pipe passes through the installing port and installs the installation of installed part joint.

Through adopting above-mentioned technical scheme, the expansion pipe is installed in the mounting groove, because the expansion pipe in use need experience continuous inflation and the process of gassing, probably leads to the expansion pipe to break away from in the mounting groove, so set up the installed part to set up the installing port on the surface of expansion pipe, aim at the position of second grade mounting bar with the installing port of expansion pipe when the installation, and crowd the expansion pipe section by section to the position between one-level mounting bar and the mounting groove, can realize that the installation of expansion pipe is fixed.

Preferably, the border department of the installing port both sides of inflation pipe is provided with the bodiness and bordures, the thickness that the bodiness was bordured is greater than the distance between second grade mounting bar and the mounting groove bottom surface.

Through adopting above-mentioned technical scheme, the setting up that the bodiness was bordured can be effectual carry out abundant packing to the clearance between one-level mounting bar and the mounting groove lateral wall to reduce the expansion pipe and take place in the condition of aerifing the excessive gas leakage of back, make the expansion pipe can effectually seal the case.

Preferably, a mounting gap is reserved between the edge of the second-stage mounting bar and the inner side face of the mounting groove, and the width of the mounting gap is smaller than the size width of the thickened edge.

Through adopting above-mentioned technical scheme, the setting up of installation clearance can be convenient for the expansion pipe joint install to the mounting groove in, and the width in installation clearance is less than the size width that the bodiness was bordured simultaneously, can reduce the expansion pipe installation back and the condition emergence that breaks away from each other between the installed part.

Preferably, the first-stage mounting strip is hollow, a plurality of inflation holes are formed in the surface of the second-stage mounting strip and communicated with the inside of the first-stage mounting strip, and a plurality of air inlets are formed in the outer wall of the valve body and connected with an air blower through pipelines.

Through adopting above-mentioned technical scheme, when needs aerify the expansion pipe, only need open the air-blower, the produced air current of air-blower can reach in the expansion pipe through the hole of aerifing inside pipeline, the one-level mounting bar and on the second grade mounting bar to make expansion pipe volume increase.

Preferably, a material guiding plate is arranged above the sealing assembly, the material guiding plate is annular and is arranged obliquely, the edge of the material guiding plate, which is far away from the sealing assembly, is fixedly connected with the inner wall of the valve body, and a gap is reserved between the edge of the material guiding plate, which is close to the sealing assembly, and the inner wall of the valve body.

Through adopting above-mentioned technical scheme, the setting of drawing the flitch can carry out the drainage to the material that enters into in the valve body to the condition that effectively reduces the material and partly enter into to the mounting groove in the feeding process takes place.

Preferably, the surface of the valve core is provided with a wear-resistant rubber layer in a fitting manner.

Through adopting above-mentioned technical scheme, the setting of wear-resisting rubber layer can effectively improve the wearability on case surface to improve the life of case.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sealing assembly is arranged, so that the effect of effectively improving the sealing property of the flap valve can be achieved;

2. through the arrangement of the thickened wrapping edges, the effects of improving the installation stability between the expansion pipe and the installation part and reducing the occurrence of the excessive air leakage condition of the expansion pipe can be achieved;

3. through the setting of guide plate, can play the effect that reduces the material and get into to the mounting groove.

Drawings

Fig. 1 is a schematic view of the overall structure of a flap valve with high sealing performance according to an embodiment of the present application.

Fig. 2 is a schematic sectional view taken along a-a in fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 2.

Reference number description, 1, valve body; 11. mounting grooves; 12. an air inlet; 13. a fuse plate; 2. a valve core; 21. sealing the edge; 22. a wear-resistant rubber layer; 3. a valve shaft; 4. a drive mechanism; 5. a seal assembly; 51. an expansion tube; 511. an installation port; 512. thickening the covered edge; 52. a blower; 6. a mounting member; 61. a first-level mounting bar; 62. secondary mounting bars; 621. and (4) an air inflation hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses flap valve that leakproofness is high. Referring to fig. 1 and 2, the flap valve with high sealing performance comprises a valve body 1 and a rotatable valve core 2 located in the valve body 1, wherein the valve core 2 is disc-shaped, the valve core 2 is fixedly connected with a valve shaft 3 along the diameter position of the valve core 2, the valve shaft 3 extends out of the valve body 1, a driving mechanism 4 is arranged outside the valve body 1, the driving end of the driving mechanism 4 is connected with the valve shaft 3, and the driving mechanism 4 is used for realizing the rotation of the valve core 2. In this embodiment, actuating mechanism 4 comprises drive cylinder and link assembly, and link assembly's one end is articulated with the output that drives actuating cylinder, and link assembly's the other end is articulated with the end of valve shaft 3, can realize the rotation of case 2 through the flexible of driving actuating cylinder to realize opening and shutting of flap valve, drive actuating cylinder among the actuating mechanism 4 also can be changed into drive cylinder. In order to improve the sealing performance of the flap valve, the sealing component 5 which is attached to the edge of the valve core 2 is arranged on the inner wall surface of the valve body 1.

Referring to fig. 2 and 3, the sealing assembly 5 includes an expansion pipe 51 made of rubber, the expansion pipe 51 is disposed on a side wall of the valve body 1, an indent mounting groove 11 for placing the expansion pipe 51 is disposed on an inner wall of the valve body 1, in this embodiment, the valve shaft 3 is located in a middle position of the valve core 2, and the mounting grooves 11 are disposed on two sides of the valve shaft 3. The bottom surface department of mounting groove 11 is provided with installed part 6, and installed part 6 is including the one-level mounting bar 61 that sets up perpendicularly with the mounting groove 11 bottom surface and the second grade mounting bar 62 parallel with the mounting groove 11 bottom surface. One-level mounting bar 61 and mounting groove 11's bottom surface fixed connection, the border fixed connection of 11 bottom surfaces of mounting groove is kept away from with one-level mounting bar 61 to second grade mounting bar 62, the cross-section of installed part 6 is T shape, the inside of one-level mounting bar 61 is for setting up to cavity, and the position that the surface of second grade mounting bar 62 corresponds each one-level mounting bar 61 has been seted up and has been aerifyd hole 621, it is linked together with the inside of one-level mounting bar 61 to aerify hole 621, a plurality of inlet ports 12 have been seted up on valve body 1's the outer wall, inlet port 12 is linked together with the inside of one-level mounting bar 61, and.

Referring to fig. 2 and 3, the installation opening 511 is formed in the surface of the expansion pipe 51, and when the installation is performed, a worker only needs to align the installation opening 511 of the expansion pipe 51 with the position of the secondary installation bar 62 and squeeze the expansion pipe 51 into the gap between the primary installation bar 61 and the installation groove 11 section by section, so that the installation and fixation of the expansion pipe 51 can be realized. In order to realize good air tightness of the expansion pipe 51 after installation, thickened covered edges 512 are arranged at the edges of two sides of an installation opening 511 of the expansion pipe 51, and the thickness of the thickened covered edges 512 is larger than the distance between the secondary installation strip 62 and the bottom surface of the installation groove 11. An installation gap is reserved between the edge of the second-stage installation strip 62 and the installation groove 11, and the width of the installation gap is smaller than the size width of the thickened wrapping edge 512. Bordure 512 through setting up the bodiness, the bodiness is bordured 512 can be effectual carry out abundant and effectual packing to the clearance between one-level mounting strip 61 and the mounting groove 11 and the clearance between second grade mounting strip 62 and the mounting groove 11 to effectively reduce the condition emergence of excessive gas leakage after aerifing in the expansion pipe 51, thereby make the expansion pipe 51 after aerifing can be effectual seal case 2, also can effectively reduce the flap valve in-process of long-term use simultaneously, the possibility that breaks away from takes place between expansion pipe 51 and the installed part 6.

Referring to fig. 2 and 3, the surface of the valve core 2 is provided with a wear-resistant rubber layer 22 in an attaching manner, the wear resistance of the surface of the valve core 2 can be effectively improved by the wear-resistant rubber layer 22, so that the service life of the valve core 2 is effectively prolonged, the outer edge of the valve core 2 is provided with a sealing edge 21, when the valve core 2 is in a closed state, the sealing edge 21 and the outer edge of the mounting groove 11 are in an attaching manner, the setting of the sealing edge 21 can further improve the attaching degree of the expansion pipe 51 between the expansion and the surface of the valve core 2, and therefore the sealing performance of the valve body 1 is effectively improved. The top of seal assembly 5 is provided with the fuse board 13, and fuse board 13 is annular and slope setting, and the border and the 1 inner wall fixed connection of valve body that seal assembly 5 was kept away from to fuse board 13, draws and leaves the clearance between the border that the fuse board 13 is close to seal assembly 5 and the 1 inner wall of valve body, and the setting of drawing the fuse board 13 can carry out the drainage to the material that gets into to valve body 1 to effectively reduce the material and get into the condition emergence in mounting groove 11 in the feeding in-process part.

The implementation principle of the flap valve with high sealing performance is as follows: after the valve core 2 is controlled by the driving mechanism 4 to rotate and the flap valve is in a closed state, the blower 52 is started, the air flow generated by the blower 52 sequentially passes through the pipeline, the inside of the first-stage mounting strip 61 and the inflating hole 621 of the second-stage mounting strip 62 to reach the inside of the expansion pipe 51, so that the volume of the expansion pipe 51 is increased, the surface of the expansion pipe 51 is attached to the sealing wrapping edge 21 at the edge of the valve core 2, and the effect of improving the sealing performance of the valve core 2 is achieved.

When the valve core 2 needs to rotate and the flap valve is opened, the blower 52 needs to be closed first to enable the airflow in the expansion pipe 51 to flow out, and after the air pressure in the expansion pipe 51 is reduced, the driving mechanism 4 drives the valve core 2 to rotate to enable the flap valve to be opened.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a flap valve that leakproofness is high, includes valve body (1) and case (2) that are located valve body (1), case (2) are the disc and along diameter position fixedly connected with valve shaft (3), valve shaft (3) are connected with and are used for realizing case (2) pivoted actuating mechanism (4), the both ends of valve shaft (3) pass valve body (1) setting and with valve body (1) between rotate and be connected its characterized in that: the valve is characterized in that a sealing component (5) attached to the edge of the valve core (2) is arranged on the inner wall surface of the valve body (1), the sealing component (5) comprises an expansion pipe (51) made of rubber, and the expansion pipe (51) is connected with an air blower (52) through a pipeline outside the valve body (1).

2. The flap valve with high sealing performance according to claim 1, is characterized in that: the expansion pipe sealing device is characterized in that an inwards concave mounting groove (11) for placing an expansion pipe (51) is formed in the joint of the inner wall of the valve body (1) and the closed valve core (2), a sealing edge covering (21) is arranged at the outer edge of the valve core (2), and when the valve core (2) is in a closed state, the sealing edge covering (21) is attached to the outer edge of the mounting groove (11).

3. The flap valve with high sealing performance according to claim 2, is characterized in that: mounting groove (11) are provided with two and are located the both sides of valve shaft (3), the bottom surface of mounting groove (11) is provided with installed part (6), installed part (6) include with mounting groove (11) bottom surface perpendicular one-level mounting bar (61) that set up and with mounting groove (11) parallel second grade mounting bar (62) in bottom surface, one-level mounting bar (61) and mounting groove (11) bottom surface fixed connection, the border fixed connection of mounting groove (11) bottom surface is kept away from with one-level mounting bar (61) second grade mounting bar (62), the cross-section of installed part (6) is T shape, installing port (511) have been seted up to the surface of expansion pipe (51), when installation to mounting groove (11) is interior in expansion pipe (51), expansion pipe (51) are installed through installing port (511) and installed part (6) joint.

4. The flap valve with high sealing performance according to claim 3, wherein: the border department of installing port (511) both sides of inflation pipe (51) is provided with bodiness bordure (512), the thickness of bodiness bordure (512) is greater than the distance between second grade mounting bar (62) and mounting groove (11) bottom surface.

5. The flap valve with high sealing performance according to claim 4, is characterized in that: the utility model discloses a two-stage installation strip, including the mounting groove (11), the medial surface of border and mounting groove (62) of second grade mounting bar (11) is reserved between and is provided with the installation clearance, the width in installation clearance is less than the size width of bodiness bordure (512).

6. The flap valve with high sealing performance according to claim 5, wherein: the one-level mounting strip (61) is inside hollow, a plurality of inflation holes (621) have been seted up on second grade mounting strip (62) surface, inflation holes (621) are linked together with the inside of one-level mounting strip (61), be provided with a plurality of inlet ports (12) on valve body (1) outer wall, inlet port (12) pass through the pipeline and link to each other with air-blower (52).

7. The flap valve with high sealing performance according to claim 2, is characterized in that: the improved sealing valve is characterized in that a material guiding plate (13) is arranged above the sealing assembly (5), the material guiding plate (13) is annular and is arranged obliquely, the edge of the material guiding plate (13), which is far away from the sealing assembly (5), is fixedly connected with the inner wall of the valve body (1), and a gap is reserved between the edge of the material guiding plate (13), which is close to the sealing assembly (5), and the inner wall of the valve body (1).

8. The flap valve with high sealing performance according to claim 1, is characterized in that: and a wear-resistant rubber layer (22) is attached to the surface of the valve core (2).