A handle butterfly valve

Abstract

The utility model discloses a handle butterfly valve relates to pipeline transportation system field, and this handle butterfly valve, including valve core, valve rod and sealing ring, the arc strip is slid and is arranged to valve core side surface, and the inboard arc strip is inserted and is connected and is arranged carryover rod through spring, and the end portion carryover rod is slid and is arranged push rod, and the angle of associated valve core occurs carryover and is pressed against rubber ring, and the inboard installation groove of valve core is used to install rubber ring and is slid and is arranged arc strip, and the carryover rod is inserted and is connected and is arranged through spring and is extruded and pushes arc strip, and the end portion carryover rod is inserted and is connected and is arranged push rod, and the fixed block of push rod cooperation pipeline inner wall, when the valve core rotates and closes, and push rod is extruded and carries over, and the carryover of carryover rod is converted into elastic potential through spring, and then through arc strip extruded and push rubber ring, make rubber ring and outwardly occur deformation and press tightly gap and seal, and under the condition that rubber ring abrasion is not serious, can guarantee good sealing effect without changing and not leaking in the inside.

Description

Technical Field

[0001] This utility model proposes a shut-off valve, which relates to the field of pipeline transportation systems, and specifically to a handle butterfly valve. Background Technology

[0002] The handle butterfly valve controls the opening and closing of the flow path inside the valve body by rotating the valve core through the valve stem. To ensure the sealing effect of the valve core on the flow channel, an elastic rubber ring is usually fitted on the side of the valve core, which can seal the gap through deformation.

[0003] However, rubber structures can age and corrode over time, leading to improper closure of the butterfly valve and internal leakage. This is almost an unavoidable problem when using rubber sealing structures. However, equipment maintenance is time-consuming and labor-intensive, and there are many expenses for replacing vulnerable parts.

[0004] In response, those skilled in the art have proposed a handle butterfly valve that improves the structure of existing butterfly valves, reduces internal leakage caused by aging and wear of the rubber ring, reduces replacement costs for the worn parts, and ensures normal operation. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a handle butterfly valve. By improving the structure of the existing valve core and adding an advance rod and push rod structure, the push rod is squeezed and advanced when the valve is closed, causing the advance rod to extend outward and push the rubber ring, thereby ensuring the rubber ring fits and seals the inner wall of the valve. This avoids internal leakage caused by wear and corrosion of the rubber ring and eliminates the need to replace the sealing ring when there is only a small amount of seal loss.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a handle butterfly valve, comprising a valve core, a valve stem, and a rubber ring. The valve stem is fixed to the side of the valve core, and the rubber ring is fitted onto the side of the valve core. The valve core is rotated by the valve stem to control the angle of the valve core within the pipeline, thereby controlling the valve opening. When the valve core is closed, the rubber ring is tightly fitted against the inner wall of the pipeline for sealing. The rubber ring deforms under pressure, resulting in a good sealing effect.

[0007] An advance rod is inserted into the inner side of the valve core, and a fixing block is fixed to the inner wall of the pipe corresponding to the push rod. When the valve is closed, the valve core approaches the fixing block on the inner wall of the pipe, and the fixing block pushes the advance rod to advance into the inner side of the valve core. This advance ensures that the rubber ring tightly seals the gap.

[0008] An arc-shaped strip is provided at one end of the advance rod near the rubber ring. A push rod is inserted into the side of the valve core corresponding to the advance rod. The push rod is pressed into position by the fixing block. At the same time, the advance rod advances in the direction of the valve core end face. The arc-shaped strip at the end of the advance rod presses the rubber ring against the inner wall of the pipe to ensure a seal and compensate for the leakage problem caused by the aging and wear of the rubber ring.

[0009] Preferably, the arc-shaped surface of the valve core is provided with an installation groove, and the rubber ring is fixed to the arc-shaped surface of the valve core through the installation groove. The installation groove limits and engages the rubber ring to prevent it from falling off due to compression from the inner wall of the pipe.

[0010] The arc-shaped strip is slidably disposed inside the mounting groove, and the advance rod passes through the inner wall of the mounting groove and is slidably connected thereto. When the advance rod is subjected to external force, it can slide along the installation direction.

[0011] Preferably, a spring is provided between the advance rod and the arc-shaped strip to abut against each other. The advance of the advance rod is converted into the elastic potential energy stored in the spring, and then the elastic force acts on the arc-shaped strip to adapt to the different degrees of aging and wear of the rubber ring.

[0012] The advance rod and the push rod are respectively fixed with a squeezing wedge at one end. When the push rod is squeezed by an external force, the squeezing wedge converts the advance into a vertical advance, thereby squeezing the rubber ring set on the arc surface of the valve core.

[0013] Preferably, the valve core has corresponding locking blocks fixed to its side and the inner wall of the pipe. The valve core and the inner wall of the pipe are locked together by the locking blocks to prevent the reaction force of the fixed block from hindering the closing of the valve core when it pushes the advance rod. The locking blocks are mutually locked and limit the spring's reset force.

[0014] Preferably, the end of the push rod away from the advance rod is threaded with an extension screw, which adjusts the height of the push rod extending beyond the valve core surface to better accommodate the clamping action of the locking block and the fixing block on the valve core.

[0015] Preferably, an industrial handle is fixed to the end of the valve stem away from the valve core, and the valve stem is rotated by the industrial handle.

[0016] An industrial link is hinged to the inner side of the industrial handle. A limiting pin is provided on the side of the hinged industrial link. The limiting pin passes through the side wall of the industrial handle to limit the angle, thereby positioning the opening degree of the valve core.

[0017] Preferably, an industrial handle is hinged to the inner side of the industrial handle. One end of the industrial handle is snapped into the industrial link. When the movable end of the industrial handle is pressed, the angle of the other end of the industrial handle changes. Through the snapping relationship, the angle of the industrial link snapped into it changes synchronously, thereby controlling the limiting state of the limiting pin on the side of the industrial link.

[0018] This utility model discloses a handle butterfly valve, which has the following beneficial effects:

[0019] This handle butterfly valve has an arc-shaped strip slidingly installed inside the mounting groove of the valve core for installing the rubber ring. An advance rod is inserted into the groove and a spring pushes the arc-shaped strip. A push rod is inserted into the end of the advance rod and cooperates with a fixing block on the inner wall of the pipeline. When the valve core is rotated to close, the push rod is pushed into position. The advance of the advance rod is converted into elastic potential energy by the spring, which then pushes the rubber ring through the arc-shaped strip, causing the rubber ring to deform outward and press against the gap to seal. Even if the rubber ring is not severely worn, it can ensure a good sealing effect and prevent internal leakage without replacement. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the industrial handle structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the valve core and rubber ring installation structure of this utility model;

[0024] Figure 4 This is an assembly drawing of the valve core and rubber ring mounting structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the arc-shaped strip clamping drive structure of this utility model.

[0026] In the diagram: 1. Valve core; 2. Valve stem; 3. Rubber ring; 4. Feed rod; 5. Arc strip; 6. Push rod; 7. Mounting groove; 8. Spring; 9. Push wedge; 10. Locking block; 12. Extension screw; 13. Industrial handle; 14. Industrial link; 15. Industrial pull handle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] This utility model embodiment discloses a handle butterfly valve;

[0029] According to the appendix Figure 1-5 As shown, the valve includes a valve core 1, a valve stem 2, and a rubber ring 3. The valve stem 2 is fixed to the side of the valve core 1, and the rubber ring 3 is fitted onto the side of the valve core 1. The valve core 1 is rotated by the valve stem 2 to control the angle of the valve core 1 in the pipeline, thereby controlling the opening degree of the valve. When the valve core 1 is closed, the rubber ring 3 is tightly pressed against the inner wall of the pipeline for sealing. The rubber ring 3 deforms under pressure, which has a good sealing effect.

[0030] An advance rod 4 is inserted into the inner side of the valve core 1, and a fixing block is fixed to the inner wall of the pipe corresponding to the push rod 6. When the valve is closed, the valve core 1 approaches the fixing block on the inner wall of the pipe, and the fixing block pushes the advance rod 4 to advance into the inner side of the valve core 1. This advance ensures that the rubber ring 3 tightly seals the gap.

[0031] An arc-shaped strip 5 is provided at one end of the advance rod 4 near the rubber ring 3. A push rod 6 is inserted into the side of the valve core 1 corresponding to the advance rod 4. The push rod 6 is pressed into position by the fixed block. At the same time, the advance rod 4 advances in the direction of the valve core 1 end face. The arc-shaped strip 5 at the end of the advance rod 4 presses the rubber ring 3 against the inner wall of the pipe to ensure a seal and make up for the leakage problem caused by the aging and wear of the rubber ring 3.

[0032] The valve core 1 has an installation groove 7 on its arc-shaped surface. The rubber ring 3 is fixed to the arc-shaped surface of the valve core 1 through the installation groove 7. The installation groove 7 limits and engages the rubber ring 3 to prevent it from falling off due to the squeezing of the inner wall of the pipe.

[0033] The arc-shaped strip 5 is slidably disposed inside the mounting groove 7, and the advance rod 4 passes through the inner wall of the mounting groove 7 and is slidably connected thereto. When the advance rod 4 is subjected to external force, it can slide along the installation direction.

[0034] A spring 8 is installed between the advance rod 4 and the arc strip 5. The advance of the advance rod 4 is converted into the elastic potential energy stored in the spring 8, and then the elastic force is applied to the arc strip 5 to adapt to the different degrees of aging and wear of the rubber ring 3.

[0035] The advance rod 4 and the push rod 6 are respectively fixed with a squeezing wedge 9 at one end. When the push rod 6 is squeezed by an external force, it is converted into a vertical advance through the squeezing wedge 9, which in turn squeezes the rubber ring 3 set on the arc surface of the valve core 1.

[0036] The valve core 1 is fixed with corresponding locking blocks 10 on the side and the inner wall of the pipe. The valve core 1 and the inner wall of the pipe are locked together by the locking blocks 10 to prevent the reaction force of the fixed block from hindering the closing of the valve core 1 when it pushes the advance rod 4. The locking blocks 10 are locked together to limit and offset the reset force of the spring 8.

[0037] The end of the push rod 6 away from the advance rod 4 is threaded with an extension screw 12. The extension screw 12 adjusts the height of the push rod 6 extending out of the surface of the valve core 1 to better accommodate the clamping action of the locking block 10 and the fixing block on the valve core 1.

[0038] An industrial handle 13 is fixed to the end of the valve stem 2 away from the valve core 1, and the valve stem 2 is rotated by the industrial handle 13.

[0039] An industrial link 14 is hinged to the inner side of the industrial handle 13. A limiting pin is provided on the side of the hinged industrial link 14. The limiting pin passes through the side wall of the industrial handle 13 to limit the angle, thereby positioning the opening degree of the valve core 1.

[0040] An industrial handle 15 is hinged to the inner side of the industrial handle 13. One end of the industrial handle 15 is snapped into the industrial link 14. When the movable end of the industrial handle 15 is pressed, the angle of the other end of the industrial handle 15 changes. Through the snapping relationship, the angle of the industrial link 14 that is snapped into it changes synchronously, thereby controlling the limiting state of the side limit pin of the industrial link 14.

[0041] This handle butterfly valve has an arc-shaped strip 5 slidably installed inside the mounting groove 7 of the valve core 1 for installing the rubber ring 3, and an advance rod 4 is inserted therein. The arc-shaped strip 5 is pushed by a spring 8. A push rod 6 is inserted at the end of the advance rod 4. The push rod 6 cooperates with the fixing block on the inner wall of the pipeline. When the valve core 1 is rotated to close, the push rod 6 is pushed into position. The advance of the advance rod 4 is converted into elastic potential energy by the spring 8, which in turn pushes the rubber ring 3 through the arc-shaped strip 5, causing the rubber ring 3 to deform outward and press against the gap to seal. If the rubber ring 3 is not severely worn, it can ensure a good sealing effect and prevent internal leakage without replacement.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A handle butterfly valve, comprising a valve core (1), a valve stem (2), and a rubber ring (3), wherein the valve stem (2) is fixed to the side of the valve core (1), and the rubber ring (3) is sleeved on the side of the valve core (1), characterized in that: An advance rod (4) is inserted into the inner side of the valve core (1). An arc-shaped strip (5) is provided at one end of the advance rod (4) near the rubber ring (3). A push rod (6) is inserted into the side of the valve core (1) corresponding to the advance rod (4). The push rod (6) is pressed into position by external force, which pushes the advance rod (4) into position. The arc-shaped strip (5) at the end of the advance rod (4) presses the rubber ring (3) against the inner wall of the pipe to ensure a seal as the advance rod (4) advances.

2. The handle butterfly valve as described in claim 1, characterized in that: The valve core (1) has an arc-shaped surface with an installation groove (7). The rubber ring (3) is fixed to the arc-shaped surface of the valve core (1) through the installation groove (7). The arc-shaped strip (5) is slidably disposed inside the installation groove (7). The advance rod (4) passes through the inner wall of the installation groove (7) and is slidably connected to it.

3. The handle butterfly valve as described in claim 1, characterized in that: A spring (8) is provided between the advance rod (4) and the arc strip (5), and a push wedge (9) is fixed at one end of the advance rod (4) and the push rod (6) respectively.

4. The handle butterfly valve as described in claim 1, characterized in that: The valve core (1) is fixed with a corresponding locking block (10) on the side and the inner wall of the pipe. The valve core (1) and the inner wall of the pipe are locked together by the locking block (10). The inner wall of the pipe is also fixed with a fixing block corresponding to the push rod (6).

5. The handle butterfly valve as described in claim 1, characterized in that: The push rod (6) has an extension screw (12) threaded on the end away from the advance rod (4).

6. The handle butterfly valve as described in claim 1, characterized in that: An industrial handle (13) is fixed to one end of the valve stem (2) away from the valve core (1), and an industrial link (14) is hinged to the inside of the industrial handle (13).

7. The handle butterfly valve as described in claim 6, characterized in that: An industrial handle (15) is hinged to the inside of the industrial handle (13), and one end of the industrial handle (15) is snapped into the industrial link (14).

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