Soft sealing butterfly valve

Abstract

The utility model discloses a soft sealing butterfly valve which structurally comprises a double-clamping shaft, an outer sealing ring and a sealing hinge, the sealing hinge comprises a blocking body, a pushing body, a pressed body, a rotating disc, a drainage body and an extrusion body, the extrusion body and the sealing hinge are fixed, the rotating disc rotates on the same horizontal plane, the drainage body is of a structure with two arc-shaped ends expanding outwards, gas can be better drained, and the sealing effect is better. When the double-clamping shaft controls the rotating sealing hinge to be opened and is perpendicular to the outer sealing ring, the pipelines on the two sides can convey gas and drive the pushing body of the rotating disc, airflow on the two sides is driven to flow through rotation of the rotating disc, follow-up airflow can be guided by the front end to flow towards the two sides of the sealing hinge, and therefore the sealing effect is improved. The impact and loss of the sealing hinge are reduced, the impacted airflow can be guided to be conveyed to the two sides under the condition that the sealing hinge is opened and impacted with the airflow, large impact force is prevented from being directly formed with the sealing hinge, the service life of the sealing hinge is prolonged, and the sealing effect of the sealing hinge is improved.

Description

Technical Field

[0001] The utility model belongs to the field of butterfly valves, and more specifically, particularly relates to a soft-sealed butterfly valve. Background Art

[0002] The soft density butterfly valve can be opened and closed by rotating 90 degrees. It can be driven manually, electrically or pneumatically. The soft density butterfly valve has good performance in regulating flow and can meet different flow control needs.

[0003] Based on the above, the present inventor has found that the existing soft-seal butterfly valve has the following shortcomings, such as:

[0004] The structure of the soft-sealed butterfly valve will form a certain flow resistance between the connecting pipes. When the gas front end is transported unimpeded, when it encounters the butterfly valve located in the middle and opens 90 degrees, a large impact will be generated on the outer ring of the butterfly valve rotor, which can easily cause the butterfly valve to loosen and deform.

[0005] Therefore need to propose a kind of soft sealing butterfly valve. Utility Model Content

[0006] In order to solve the problem that the structure of the soft-sealed butterfly valve in the above technology will form a certain flow resistance between the connecting pipes, when the gas front end is transported unimpeded, when it encounters the butterfly valve located in the middle end that is opened 90 degrees, a large impact will be generated on the outer ring of the butterfly valve rotating page, which may easily cause the butterfly valve to loosen and deform.

[0007] The purpose and effect of the soft-sealed butterfly valve of the utility model are achieved by the following specific technical means:

[0008] Its structure includes double clamping shafts, an outer sealing ring, and a sealing page. The double clamping shafts penetrate the outer sealing ring and clamp at the upper and lower ends of the sealing page. The sealing page abuts against the inner ring of the outer sealing ring and can rotate.

[0009] The sealing page includes a baffle, a push body, a pressure-bearing body, a rotating disk, a drainage body, and an extrusion body. The extrusion body is fixed to the sealing page, the rotating disk is sleeved on the surface of the sealing page and can rotate, the push bodies are evenly distributed on the outer ring of the rotating disk and can rotate together, the rotating disk is provided with two symmetrically installed on the two side surfaces of the sealing page, the rotating disk rotates in the same horizontal plane, the drainage body is a structure with arc-shaped outward expansion at both ends, which can better drain the gas, the baffle is fixed to the inner ring surface of the outer sealing ring and is installed in a diagonal position, the pressure-bearing body is embedded in the inner ring surface of the outer sealing ring and conflicts with the extrusion body, the baffle limits the direction of rotation and opening of the sealing page, and limits the maximum range of closure to better seal, and a group of nine push bodies are provided, and they are evenly distributed in a circular shape.

[0010] As a further improvement of the present invention, the extrusion body is an arc-shaped structure and is provided with two fixedly installed outer ring closed ranges extending the pressure-bearing body, the rotating disk and the sealing page are parallel surfaces, the pressure-bearing body is an arc-shaped structure and is provided with two, and is in conflict with the baffle body, and the baffle body is installed in a diagonal direction with the pressure-bearing body as the center line.

[0011] As a further improvement of the present invention, the pushing body includes a fixed block, an outer wrapping layer, and an inner groove. The fixed block and the inner groove are an integrated structure. The outer wrapping layer is wrapped around the outer surface of the fixed block and the inner groove. The fixed block is fixed to the outer surface of the rotating disk. The inner groove itself has an arc-shaped groove, which can assist the gas to push better. The fixed block supports the gas-receiving part through its own hardness.

[0012] As a further improvement of the utility model, the extrusion body includes a hard block, a rubber layer, and a round body. The round body and the hard block are an integrated structure. The rubber layer is wrapped around the outer surface of the hard block and the round body. The rubber layer serves as a protective spacing for the internal parts and the connecting parts.

[0013] As a further improvement of the utility model, the pressure-bearing body includes a soft layer, a soft sealing layer, and a limit block. The soft layer is in contact with the limit block, and the soft sealing layer is wrapped around the outer surface of the soft layer. The soft layer is made of a soft material, and when the external part squeezes and resists itself, the internal space is limited and will expand and wrap outward. The soft sealing layer plays a role of wrapping and limiting the internal part.

[0014] As a further improvement of the utility model, the curvature of the circular body when moving as a whole can better move outside the soft layer, the rubber layer and the soft sealing layer are both rubber soft bodies that can better cooperate to increase the sealing degree, and when the soft layer is squeezed by the extrusion body, the two will form an interference fit to increase the sealing degree.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. When the double-clamp shaft controls the rotating sealing page to open and be perpendicular to the outer sealing ring, the pipes on both sides will transport the gas. When the gas passes through the sealing page, it will drive the pusher of the rotating disk, and part of the gas will impact through the grooves of the inner groove itself. When the rotating disks on both sides of the sealing page start to rotate through the push of the gas, a certain airflow guide will be formed on both sides of the sealing page to guide the subsequent gas to move in the direction of the rotating airflow, so that the airflow will form a certain bifurcation state on both sides of the sealing page, so that the gas will not directly rush to the outer ring surface of the sealing page, and can drive the airflow on both sides through the rotation of the rotating disk at a position close to the sealing page, so that the subsequent airflow can be guided by the front end and circulate to both sides of the sealing page, reducing the impact and loss on the sealing page, and can guide the impacting airflow to both sides when the sealing page is open and the airflow is in an impact state, avoiding a large impact force directly with the sealing page, thereby extending the service life and sealing effect of the sealing page.

[0017] 2. The extrusion body rotates at the same time as the sealing page rotates. When the extrusion body rotates to close to 90 degrees, the soft layer will be moved and extruded through the round body supported by the hard block. The closer it moves to 90 degrees, the deeper the extrusion of the soft layer will be, and the space on the surface of the round body will be wrapped and deformed. The soft layer is further fixed and sealed by wrapping. The surface rubber layer and the soft sealing layer of the two are soft structures, which can fit the two more closely together, increase the sealing degree between them, and increase the friction between them for a more stable state. When the soft-sealed butterfly valve is closed, it can have an interference fit with the gap to which it is connected, so that the connection can better seal both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a soft-sealed butterfly valve.

[0019] Figure 2 The utility model is a three-dimensional structural schematic diagram of a sealing page.

[0020] Figure 3 The utility model is a three-dimensional structural schematic diagram of a sealing page.

[0021] Figure 4 The utility model is a schematic diagram of a top view of the sealing page.

[0022] Figure 5 The utility model is a schematic diagram of the internal structure of a rotating disk in a front view.

[0023] Figure 6 The utility model is a schematic diagram of the internal structure of an extrusion body viewed from above.

[0024] Figure 7The utility model is a schematic diagram of the internal structure of a pressure-bearing body viewed from above.

[0025] In the figure: double clamp shaft-1, outer sealing ring-2, sealing page-3, baffle body-a1, push body-a2, pressure body-a3, rotating disk-a4, drainage body-a5, extrusion body-a6, fixed block-11, outer wrapping layer-12, inner groove-13, hard block-s1, rubber layer-s2, round body-s3, soft layer-e1, soft sealing layer-e2, limit block-e3. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Embodiment 1:

[0028] As attached Figure 1 To Attachment Figure 5 As shown:

[0029] The utility model provides a soft-sealed butterfly valve, which structure includes a double clamping shaft 1, an outer sealing ring 2, and a sealing page 3. The double clamping shaft 1 penetrates the outer sealing ring 2 and is clamped at the upper and lower ends of the sealing page 3. The sealing page 3 is against the inner ring of the outer sealing ring 2 and can rotate.

[0030] The sealing page 3 includes a baffle a1, a push body a2, a pressure-bearing body a3, a rotating disk a4, a drainage body a5, and an extrusion body a6. The extrusion body a6 is fixed to the sealing page 3. The rotating disk a4 is sleeved on the surface of the sealing page 3 and can rotate. The push bodies a2 are evenly distributed on the outer ring of the rotating disk a4 and can rotate together. The rotating disk a4 is provided with two symmetrically installed on the two side surfaces of the sealing page 3. The rotating disk a4 rotates in the same horizontal plane. The drainage body a5 is a structure with arc-shaped outward expansion at both ends, which can better drain the gas. The baffle a1 is fixed to the inner ring surface of the outer sealing ring 2 and is installed in a diagonal position. The pressure-bearing body a3 is embedded in the inner ring surface of the outer sealing ring 2 and conflicts with the extrusion body a6. The baffle a1 limits the direction in which the sealing page 3 rotates to open, and limits the maximum range of closure to better seal. The push bodies a2 are provided in a group of nine and are evenly distributed in a circular shape. The drainage body a5 is provided with four and is located at the upper and lower ends of the two side surfaces of the sealing page 3.

[0031] Among them, the extrusion body a6 is an arc-shaped structure and is provided with two fixedly installed outer ring closed ranges extending the pressure-bearing body a3. The rotating disk a4 is parallel to the sealing page 3. The pressure-bearing body a3 is an arc-shaped structure with two, and it is in conflict with the baffle a1. The baffle a1 is installed in a diagonal direction with the pressure-bearing body a3 as the center line. The rotating disk a4 moves together with the sealing page 3.

[0032] Among them, the pushing body a2 includes a fixed block 11, an outer wrapping layer 12, and an inner groove 13. The fixed block 11 and the inner groove 13 are an integrated structure. The outer wrapping layer 12 is wrapped around the outer surfaces of the fixed block 11 and the inner groove 13. The fixed block 11 is fixed to the outer surface of the rotating disk a4. The inner groove 13 itself has an arc-shaped groove, which can assist the gas to push better. The fixed block 11 supports the gas-receiving part through its own hardness. The outer wrapping layer 12 is made of rubber and wraps and protects the connecting part.

[0033] The specific usage and function of this embodiment are as follows:

[0034] In the utility model, the outer sealing ring 2 of the soft-sealed butterfly valve is connected with the pipeline to be connected, and the rotation opening and closing of the sealing page 3 is controlled by the upper and lower sides of the double clamping shaft 1. When the double clamping shaft 1 controls the rotating sealing page 3 to open and be perpendicular to the outer sealing ring 2, the pipelines on both sides will transport the gas. When the gas passes through the sealing page 3, the arc of the drainage body a5 itself will form a certain direction of drainage, so that the gas can flow to the position of the rotating disk a4, and will drive the push body a2 of the rotating disk a4. Part of the gas will impact through the groove of the inner groove 13 itself, so that the outer sheath 12 is pushed by the gas to bend into the inner groove 13, and the gas The inner groove 13 can better push the rotating disk a4 to rotate along the sealing page 3. When the rotating disks a4 on both sides of the sealing page 3 start to rotate due to the push of the gas, a certain airflow guide will be formed on both sides of the sealing page 3 to guide the subsequent gas to move in the direction of the rotating airflow, so that the airflow will form a certain forked state on both sides of the sealing page 3, so that the gas will not directly rush to the outer ring surface of the sealing page 3. At a position close to the sealing page 3, the airflow on both sides can be driven by the rotation of the rotating disk a4, so that the subsequent airflow can be guided by the front end and circulate to both sides of the sealing page 3, reducing the impact and loss on the sealing page 3.

[0035] Embodiment 2:

[0036] As attached Figure 6 To Attachment Figure 7 As shown:

[0037] Among them, the extrusion body a6 includes a hard block s1, a rubber layer s2, and a round body s3. The round body s3 and the hard block s1 are an integrated structure. The rubber layer s2 is wrapped around the outer surface of the hard block s1 and the round body s3. The rubber layer s2 serves as a protective spacing for the internal parts and the connecting parts. The round body s3 is a round body structure that allows the main body to move better when it contacts the external parts.

[0038] Among them, the pressure-bearing body a3 includes a soft layer e1, a soft sealing layer e2, and a limit block e3. The soft layer e1 is fitted with the limit block e3, and the soft sealing layer e2 is wrapped around the outer surface of the soft layer e1. The soft layer e1 is made of soft material. When the external part squeezes and resists itself, the internal space is limited and will expand and wrap outward. The soft sealing layer e2 plays a role of wrapping and limiting the internal part. When the extrusion body a6 moves to move and squeeze the soft layer e1, the soft layer e1 will expand outward to wrap and fix the surface of the extrusion body a6.

[0039] Among them, the curvature of the circular body s3 when moving as a whole can better move outside the soft layer e1, the rubber layer s2 and the soft sealing layer e2 are both rubber soft bodies that can better cooperate to increase the sealing degree, and when the soft layer e1 is squeezed by the extrusion body a6, the two will form an interference fit to increase the sealing degree, and the limit block e3 itself has a certain hardness and can play a supporting role when the soft layer e1 is subjected to force.

[0040] The specific usage and function of this embodiment are as follows:

[0041] In the utility model, when the soft-sealed butterfly valve drives the sealing page 3 to rotate through the double clamping shaft 1 to close the space of the connecting pipes on both sides to play an isolating role, the extrusion body a6 rotates together with the sealing page 3. When the extrusion body a6 rotates to close to 90 degrees, the round body s3 supported by the hard block s1 will move and extrude the soft layer e1. The closer the movement is to 90 degrees, the deeper the extrusion of the soft layer e1 will be. The soft layer e1 will be restricted by the space of the limit block e3 and the stopper a1, and will be wrapped and deformed into the space on the surface of the round body s3, so that the round body s3 can be squeezed into the soft layer e1, and further fixed and sealed by the wrapping of the soft layer e1. The surface rubber layer s2 and the soft sealing layer e2 of the two are soft structures, which can fit the two more closely together, increase the sealing degree between them, and increase the friction between them to be more stable. When the sealing page 3 rotates, the stopper a1 will limit the maximum rotation range, so that the sealing page 3 can just rotate to the position with the best sealing degree.

[0042] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A soft-sealed butterfly valve, comprising a double clamping shaft (1), an outer sealing ring (2), and a sealing leaf (3), wherein the double clamping shaft (1) passes through the outer sealing ring (2) and is clamped at the upper and lower ends of the sealing leaf (3), and the sealing leaf (3) is against the inner ring of the outer sealing ring (2) and is rotatable, and is characterized in that: The sealing page (3) comprises a blocking body (a1), a pushing body (a2), a pressure-bearing body (a3), a rotating disk (a4), a drainage body (a5), and an extrusion body (a6); the extrusion body (a6) is fixed to the sealing page (3); the rotating disk (a4) is sleeved on the surface of the sealing page (3) and is rotatable; the pushing body (a2) is evenly distributed on the outer ring of the rotating disk (a4) and can rotate together; the rotating disk (a4) is provided with two symmetrically mounted on the two side surfaces of the sealing page (3); the rotating disk (a4) rotates in the same horizontal plane; the drainage body (a5) is a structure with arc-shaped outward expansion at both ends, which can better drain the gas; the blocking body (a1) is fixed to the inner ring surface of the outer sealing ring (2) and is installed in a diagonal position; the pressure-bearing body (a3) ​​is embedded in the inner ring surface of the outer sealing ring (2) and contacts the extrusion body (a6); the blocking body (a1) limits the direction in which the sealing page (3) rotates to open, and limits the maximum range of closing to better seal.

2. A soft-sealed butterfly valve according to claim 1, characterized in that: The extrusion body (a6) is an arc-shaped structure and is provided with two outer ring closed ranges that are fixedly installed to extend the pressure-bearing body (a3), and the rotating disk (a4) and the sealing leaf (3) are parallel surfaces.

3. A soft-sealed butterfly valve according to claim 1, characterized in that: The pusher (a2) comprises a fixed block (11), an outer layer (12), and an inner groove (13); the fixed block (11) and the inner groove (13) are an integrated structure; the outer layer (12) is wrapped around the outer surfaces of the fixed block (11) and the inner groove (13); the fixed block (11) is fixed to the outer surface of the rotating disk (a4); the inner groove (13) itself has an arc-shaped groove, which can assist the gas in better pushing.

4. A soft-sealed butterfly valve according to claim 1, characterized in that: The extruded body (a6) comprises a hard block (s1), a rubber layer (s2), and a round body (s3); the round body (s3) and the hard block (s1) are an integrated structure, and the rubber layer (s2) is wrapped around the outer surfaces of the hard block (s1) and the round body (s3).

5. The soft-sealed butterfly valve according to claim 1, characterized in that: The pressure-bearing body (a3) ​​includes a soft layer (e1), a soft sealing layer (e2), and a limit block (e3). The soft layer (e1) is in contact with the limit block (e3). The soft sealing layer (e2) is wrapped around the outer surface of the soft layer (e1). The soft layer (e1) is made of a soft material. When the external part squeezes and resists itself, the internal space is limited and will expand and wrap outward.

6. A soft-sealed butterfly valve according to claim 4, characterized in that: When the circular body (s3) moves as a whole, its own curvature can better move outside the soft layer (e1), and the rubber layer (s2) and the soft sealing layer (e2) are both rubber soft bodies that can better cooperate to increase the sealing degree.

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