Flange ball valve with multi-stage sealing effect

Abstract

The utility model discloses a flanged ball valve with a multistage sealing effect, which relates to the technical field of flanged ball valves and comprises a valve body, a sealing component is arranged in the valve body, and a filter component is arranged on one side of the sealing component. The sealing assembly comprises gas storage grooves formed in the upper end and the lower end of the two sides in the valve body, sealing plugs are slidably connected into the gas storage grooves, circular shafts are welded to one sides of the sealing plugs, springs are fixedly connected to the ends, away from the circular shafts, of the sealing plugs, and flow dividing pipes are fixedly connected to the ends, away from the gas storage grooves, of connecting pipes. The connecting port can be preliminarily sealed through the inflatable sealing ring, when the flow speed of water flow in the valve body is too high, the water flow can rapidly impact the filter screen, the filter screen drives the round block to move towards one side of the water flow direction to extrude the round shaft, gas in the gas storage tank enters the inflatable sealing ring, the inflatable sealing ring is expanded, and the gas storage tank is sealed. The sealing performance of the joint of the valve body and the pipeline is further improved, and the situation of seepage and leakage when water flow is too fast is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of flange ball valves, in particular to a flange ball valve with multi-stage sealing effect. Background Art

[0002] Ball valves and gate valves are valves of the same type. The difference is that the closing part is a sphere, which rotates around the center line of the valve body to open and close. The flanged ball valve is a type of ball valve, which is driven by the valve stem and rotates around the axis of the valve stem. The ball valve is mainly used in pipelines to cut off, distribute and change the flow direction of the medium, and is widely used.

[0003] An existing patent (publication number: CN 221628934 U) discloses a flange ball valve with a multi-stage sealing effect. It continuously squeezes the connecting plate, causing it to move toward the fixed seat until it is fully closed, at which point the outer periphery of the valve core contacts the connecting plate. At the same time, the piston B is squeezed into the through groove, achieving a seal at the liquid inlet end of the valve body. The multi-stage sealing structure comprehensively improves and ensures the sealing efficiency of the flange ball valve.

[0004] However, the above technical solution still has certain defects. When the device is connected to a pipeline to convey a medium, leakage is likely to occur between the connection port of the pipeline and the device. Usually, a sealing ring is installed at the connection for sealing. However, when the flow rate of the conveying medium is too fast, the sealing ring alone is not enough to achieve a better seal. For this reason, a flange ball valve with a multi-stage sealing effect is proposed. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a flange ball valve with a multi-stage sealing effect to solve the technical problems raised in the above background.

[0006] To achieve the above object, the present invention provides the following technical solution: a flange ball valve with a multi-stage sealing effect, comprising a valve body, a sealing assembly provided inside the valve body, and a filter assembly provided on one side of the sealing assembly;

[0007] The sealing assembly includes an air storage tank opened at the upper and lower ends of both sides of the valve body, a sealing plug is slidably connected to the inside of the air storage tank, a round shaft is welded to one side of the sealing plug, and a spring is fixedly connected to the end of the sealing plug away from the round shaft, a connecting pipe is fixed to one side of the air storage tank, and a diversion pipe is fixedly connected to the end of the connecting pipe away from the air storage tank, and both ends of the diversion pipe away from the connecting pipe are connected to inflatable sealing rings.

[0008] As an optimal technical solution of a flange ball valve with a multi-stage sealing effect of the utility model, a valve core is rotatably connected to the interior of the valve body, and a switch valve is fixedly connected to the top of the valve core.

[0009] As an optimal technical solution of the flange ball valve with multi-stage sealing effect of the utility model, the switch valve is rotatably connected to the valve body, and pipelines are provided on both sides of the valve body.

[0010] As an optimal technical solution of the flange ball valve with multi-stage sealing effect of the utility model, the inflatable sealing ring is clamped on the inner wall of the valve body, and the air storage tank is provided in six groups and arranged in a circular array inside the valve body.

[0011] As an optimal technical solution for a flange ball valve with a multi-stage sealing effect of the utility model, the filter assembly includes a movable groove opened on the inner wall of the valve body, a round block is slidably connected inside the movable groove, a filter screen is installed on one side of the round block, and an iron wire is fixedly connected to the surface of the filter screen.

[0012] As an optimal technical solution of the flange ball valve with multi-stage sealing effect of the utility model, one side of the round block abuts against the round shaft.

[0013] As an optimal technical solution of the flange ball valve with multi-stage sealing effect of the utility model, the filter screen is in an inverted cone shape and is arranged inside the valve body.

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1. The utility model can preliminarily seal the connection port through the inflatable sealing ring. When the water flow rate inside the valve body is too fast, the water flow will quickly impact the filter screen, causing the filter screen to drive the round block to move to one side of the water flow direction and squeeze the round shaft, so that the gas inside the air storage tank enters the inflatable sealing ring and expands it, further improving the sealing performance of the connection between the valve body and the pipeline, and preventing infiltration and leakage when the water flow is too fast.

[0016] 2. The utility model can effectively filter impurities in water when passing through the filter, and setting the filter to a cone shape can concentrate the filtered impurities at the end, avoiding clogging of the filter for a long time and affecting the normal passage of water. By setting the iron wire, the stability of the filter can be better enhanced to prevent deformation under the impact of water flow for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall components of the utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the interior of the valve body of the present invention;

[0019] Figure 3 This is a three-dimensional schematic diagram of the sealing component of the present utility model;

[0020] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 It is a three-dimensional schematic diagram of the filter assembly of the present invention.

[0022] In the figure: 100, valve body; 110, valve core; 120, switch valve; 130, pipeline;

[0023] 200, sealing assembly; 210, circular shaft; 211, air storage tank; 212, sealing plug; 220, spring; 230, connecting pipe; 240, diverter pipe; 250, inflatable sealing ring;

[0024] 300, filter assembly; 310, round block; 311, movable trough; 320, filter screen; 330, iron wire. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following describes an embodiment of the present invention based on its overall structure.

[0027] A flange ball valve with multi-stage sealing effect, such as Figure 1-5 As shown, it includes a valve body 100, a sealing assembly 200 is provided inside the valve body 100, and a filter assembly 300 is provided on one side of the sealing assembly 200;

[0028] The sealing assembly 200 includes an air storage tank 211 opened at the upper and lower ends on both sides of the interior of the valve body 100, and a sealing plug 212 is slidably connected inside the air storage tank 211. A round shaft 210 is welded to one side of the sealing plug 212, and the end of the sealing plug 212 away from the round shaft 210 is fixedly connected to a spring 220. A connecting pipe 230 is fixed to one side of the air storage tank 211, and the end of the connecting pipe 230 away from the air storage tank 211 is fixedly connected to a diversion pipe 240, and both ends of the diversion pipe 240 away from the connecting pipe 230 are connected to an inflatable sealing ring 250.

[0029] When water flows into the valve body 100 through the pipe 130, the connection port can be preliminarily sealed by the inflatable sealing ring 250. When the water flow rate inside the valve body 100 is too fast, the water flow will quickly impact the filter screen 320, causing the filter screen 320 to drive the round block 310 to move to one side of the water flow direction, causing the round block 310 to squeeze the round shaft 210, and the round shaft 210 drives the sealing plug 212 to compress the spring 220 and squeeze the gas inside the air storage tank 211, so that the gas enters the diverter pipe 240 through the connecting pipe 230, and then enters the inflatable sealing ring 250 from the diverter pipe 240, causing it to expand, further improving the sealing performance of the connection between the valve body 100 and the pipe 130, and preventing infiltration and leakage when the water flow is too fast.

[0030] Please refer to Figure 1 and Figure 2 The valve body 100 is rotatably connected to the valve core 110, and the top of the valve core 110 is fixedly connected to the switch valve 120. The switch valve 120 is rotatably connected to the valve body 100, and pipes 130 are provided on both sides of the valve body 100.

[0031] The water flow is transported through the valve body 100 , and the valve core 110 is driven to rotate by rotating the switch valve 120 , so that the flow rate of the water can be controlled.

[0032] Please refer to Figure 2 and Figure 4 The inflatable sealing ring 250 is snapped onto the inner wall of the valve body 100 , and the air storage tanks 211 are provided in six groups and arranged in a circular array inside the valve body 100 .

[0033] By providing two sets of inflatable sealing rings 250 , it is convenient to seal the connection between the valve body 100 and the pipeline 130 to prevent leakage. By providing multiple sets of air storage tanks 211 , it is convenient to inflate the interior of the inflatable sealing ring 250 more quickly, thereby further improving the sealing performance.

[0034] Please refer to Figure 3 and Figure 5 The filter assembly 300 includes a movable groove 311 opened on the inner wall of the valve body 100, and a round block 310 is slidably connected inside the movable groove 311. A filter screen 320 is installed on one side of the round block 310. An iron wire 330 is fixedly connected to the surface of the filter screen 320. One side of the round block 310 is in contact with the circular shaft 210. The filter screen 320 is an inverted cone, and the filter screen 320 is arranged inside the valve body 100.

[0035] When water flows through the filter 320, it can effectively filter out impurities in the water. Setting the filter 320 to a cone shape can concentrate the filtered impurities at the end, avoiding clogging of the filter 320 over a long period of time and affecting the normal passage of water. By setting the iron wire 330, the stability of the filter 320 can be better enhanced to prevent deformation under the impact of water flow for a long time.

[0036] When in use, when water flows into the valve body 100 through the pipe 130, the connection port can be initially sealed by the inflatable sealing ring 250. When the water flow rate inside the valve body 100 is too fast, the water flow will quickly impact the filter screen 320, causing the filter screen 320 to drive the round block 310 to move to one side of the water flow direction, causing the round block 310 to squeeze the round shaft 210, and the round shaft 210 drives the sealing plug 212 to compress the spring 220 and squeeze the gas inside the gas storage tank 211, so that the gas enters the diverter pipe 240 through the connecting pipe 230, and then enters the inflatable sealing ring 250 from the diverter pipe 240, causing it to expand. The expansion further improves the sealing performance of the connection between the valve body 100 and the pipe 130, and prevents the occurrence of infiltration and leakage when the water flows too fast. When the water flows through the filter 320, it can effectively filter out impurities in the water. The filter 320 is set to a cone shape, which can concentrate the filtered impurities at the end, avoiding the blockage of the filter 320 for a long time and affecting the normal passage of the water flow. The iron wire 330 can better enhance the stability of the filter 320 and prevent it from being deformed under the impact of the water flow for a long time. The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology.

[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A flange ball valve with a multi-stage sealing effect, comprising a valve body (100), characterized in that: A sealing assembly (200) is provided inside the valve body (100), and a filter assembly (300) is provided on one side of the sealing assembly (200); The sealing assembly (200) comprises an air storage tank (211) provided at the upper and lower ends of both sides of the interior of the valve body (100); a sealing plug (212) is slidably connected to the interior of the air storage tank (211); a circular shaft (210) is welded to one side of the sealing plug (212); and an end of the sealing plug (212) away from the circular shaft (210) is fixedly connected to a spring (220); a connecting pipe (230) is fixed to one side of the air storage tank (211); an end of the connecting pipe (230) away from the air storage tank (211) is fixedly connected to a shunt pipe (240); and both ends of the shunt pipe (240) away from the connecting pipe (230) are connected to an inflatable sealing ring (250).

2. A flange ball valve with multi-stage sealing effect according to claim 1, characterized in that: A valve core (110) is rotatably connected inside the valve body (100), and a switch valve (120) is fixedly connected to the top end of the valve core (110).

3. The flange ball valve with multi-stage sealing effect according to claim 2, characterized in that: The switch valve (120) is rotatably connected to the valve body (100), and pipelines (130) are provided on both sides of the valve body (100).

4. The flange ball valve with multi-stage sealing effect according to claim 1, characterized in that: The inflatable sealing ring (250) is clamped to the inner wall of the valve body (100), and the air storage tanks (211) are provided in six groups and arranged in a circumferential array inside the valve body (100).

5. The flange ball valve with multi-stage sealing effect according to claim 1, characterized in that: The filter assembly (300) comprises a movable groove (311) formed on the inner wall of the valve body (100), a round block (310) being slidably connected inside the movable groove (311), a filter screen (320) being mounted on one side of the round block (310), and an iron wire (330) being fixedly connected to the surface of the filter screen (320).

6. The flange ball valve with multi-stage sealing effect according to claim 5, characterized in that: One side of the circular block (310) abuts against the circular shaft (210).

7. The flange ball valve with multi-stage sealing effect according to claim 5, characterized in that: The filter screen (320) is in an inverted cone shape, and the filter screen (320) is arranged inside the valve body (100).

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