Fire hydrant valve body

Abstract

The invention discloses a fire hydrant valve body, and relates to the technical field of valves. The cleaning unit comprises a valve rod assembly rotationally arranged at the top of the valve pipe and a scraping assembly rotationally arranged at the bottom of the valve rod assembly, and the scraping assembly is rotationally connected with the valve pipe; the valve rod assembly comprises a mounting shell arranged at the top of the valve pipe and a rotating piece rotationally arranged in the mounting shell. When the valve is opened through rotation of the valve rod assembly, the scraping assembly in the valve rod assembly rotates reversely, impurities on the inner wall of the ball valve element are effectively scraped, corrosion caused by impurity adsorption is prevented, meanwhile, the impurities are discharged along with water flow, the maintenance frequency is reduced, the sealing assembly is extruded when the ball valve element rotates, the compensation assembly provides reverse extrusion force, and the sealing assembly is tightly attached to the outer wall of the ball valve element; even if the sealing ring strip is abraded, the sealing performance can be kept, leakage caused by abrasion is avoided, automatic sealing compensation is achieved, and the sealing performance is further enhanced through the multi-stage sealing design.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a fire hydrant valve body. BACKGROUND

[0002] The fire hydrant is a fire-fighting equipment used only in emergency situations, so the valve body is prone to scale accumulation, which leads to a decrease in sealing performance, water leakage, and even damage to the fire pipe caused by impurities and scale entering the fire pipe. Therefore, the fire hydrant valve body focuses on sealing performance and cleanliness. The ball valve, as a commonly used type of valve in fire hydrants, controls the flow of water by rotating the ball core. The sealing performance and cleanliness of the ball valve directly affect the reliability and service life of the fire hydrant.

[0003] The existing fire hydrant ball valve sealing mainly relies on the sealing ring wrapped around the outside of the ball core. However, after multiple uses, the rotation of the ball core can cause wear between the sealing ring and the ball core, thereby reducing the sealing performance. In addition, the ball valve cannot clean the impurities and scale adhering to the inner wall of the ball core during use. Long-term accumulation can cause the impurities to corrode the ball core, leading to a decrease in sealing performance. This not only affects the normal use of the fire hydrant but also may cause water leakage and even damage to the fire pipe in emergency situations, affecting the overall performance of the fire system. SUMMARY

[0004] In view of the above-mentioned problems existing in the existing fire hydrant valve body, the present application is proposed.

[0005] Therefore, the present application provides a fire hydrant valve body, which aims to solve the problem of the fire hydrant ball valve that the sealing performance decreases due to wear between the sealing ring and the ball core, and the impurities and scale adhering to the inner wall of the ball core cannot be cleaned, which can cause long-term accumulation and corrosion of the ball core, affecting the normal use of the fire hydrant.

[0006] To solve the above-mentioned technical problems, the present application provides the following technical scheme: a fire hydrant valve body, comprising a valve pipe; a cleaning unit, comprising a valve stem assembly rotatably arranged at the top of the valve pipe, and a scraping assembly rotatably arranged at the bottom of the valve stem assembly, and the scraping assembly is rotatably connected with the valve pipe; the valve stem assembly comprises a mounting shell arranged at the top of the valve pipe, a rotating piece rotatably arranged in the mounting shell, an upper tooth disc arranged on the outer diameter of the rotating piece, a gear one arranged in the upper tooth disc, a gear two arranged on the outer diameter of the gear one, and a lower tooth disc arranged on the outer diameter of the gear two, and the gear one and the gear two are connected with the mounting shell through the lower tooth disc; a sealing compensation unit, comprising a compensation assembly arranged on both sides of the valve pipe, and a sealing assembly arranged on the compensation assembly, and the sealing assembly is slidably connected with the valve stem assembly.

[0007] As a preferred scheme of the fire hydrant valve body of the present application, the bottom of the lower tooth disc is provided with a connecting sleeve ring, and the connecting sleeve ring is rotatably connected with the rotating piece.

[0008] As a preferred scheme of the fire hydrant valve body, the bottom of the connecting sleeve ring is provided with a ball valve core, and the ball valve core is in sliding connection with the valve pipe.

[0009] As a preferred scheme of the fire hydrant valve body, the scraping assembly comprises a rotating rod arranged at the bottom of the rotating piece, an arc-shaped rotating piece arranged at the outer diameter of the rotating rod, and a closing piece arranged at the top and bottom of the ball valve core, and the closing piece is in rotating connection with the rotating piece.

[0010] As a preferred scheme of the fire hydrant valve body, the compensation assembly comprises connecting pipes arranged at both sides of the valve pipe, a closing plate arranged at one side of the connecting pipe, and an inner pipe arranged in the connecting pipe.

[0011] As a preferred scheme of the fire hydrant valve body, the inner part of the inner pipe is provided with a limiting groove, the inner part of the limiting groove is provided with a reset spring, the other end of the reset spring is provided with a push rod, and the push rod is in sliding connection with the limiting groove.

[0012] As a preferred scheme of the fire hydrant valve body, the sealing assembly comprises a pushing plate arranged at one end of the push rod, a connecting plate two arranged at one side of the pushing plate, and a connecting plate one arranged at the other end of the connecting plate two, and the connecting plate one is connected with the inner pipe.

[0013] As a preferred scheme of the fire hydrant valve body, the outer diameter of the connecting plate one is provided with a sealing gasket two, and the sealing gasket two is connected with the inner pipe.

[0014] As a preferred scheme of the fire hydrant valve body, the outer diameter of the connecting plate two is provided with a sealing gasket one, and the sealing gasket one is in sliding connection with the push rod.

[0015] As a preferred scheme of the fire hydrant valve body, one side of the pushing plate is provided with a sealing ring strip, the outer diameter of the sealing ring strip is provided with a sealing auxiliary strip, and the sealing auxiliary strip is connected with the pushing plate, and the sealing ring strip and the sealing auxiliary strip are in sliding connection with the ball valve core.

[0016] The beneficial effects of the present application: when the fire hydrant needs to be used, when the valve stem assembly is rotated to open the valve, the internal scraping assembly rotates in the opposite direction, effectively scraping the impurities in the inner wall of the ball valve core, preventing corrosion caused by impurity adsorption, and at the same time, the impurities are discharged with the water flow, reducing the maintenance frequency, and the ball valve core is rotated to extrude the sealing assembly, the compensation assembly provides a reverse extrusion force, so that the sealing assembly tightly fits the outer wall of the ball valve core, even if the sealing ring strip is worn, the sealing property can be maintained, leakage caused by wear can be avoided, automatic sealing compensation can be realized, and the multi-stage sealing design further enhances the sealing performance, avoids the problem of reduced sealing property caused by wear and impurity adsorption of the traditional ball valve, and improves the service life of the fire hydrant, reduces maintenance cost, reduces water resource waste caused by leakage, and improves overall use efficiency and environmental protection performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the fire hydrant valve body of the present application.

[0019] Figure 2 It is a schematic diagram of the internal structure of the fire hydrant valve body of the present application.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the fire hydrant valve body of the present application.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the fire hydrant valve body of the present application. Figure 3 It is a schematic diagram of the enlarged structure at A of the fire hydrant valve body of the present application.

[0022] Figure 5 It is a schematic diagram of the cross-sectional exploded structure of the supplementary assembly of the fire hydrant valve body of the present application.

[0023] Figure 6 It is a schematic diagram of the exploded structure of the cleaning assembly of the fire hydrant valve body of the present application.

[0024] Figure 7 It is a schematic diagram of the side view cross-sectional structure of the fire hydrant valve body of the present application.

[0025] Figure 8 It is a schematic diagram of the enlarged structure at B of the fire hydrant valve body of the present application. Figure 7

[0026] ​100, valve pipe; 200, cleaning unit; 201, valve rod assembly; 2011, mounting shell; 2012, rotating piece; 2013, upper tooth disc; 2014, gear one; 2015, gear two; 2016, lower tooth disc; 2017, connecting sleeve ring; 2018, ball valve core; 202, scraping assembly; 2021, rotating rod; 2022, arc-shaped rotating piece; 2023, closing piece; 300, sealing compensation unit; 301, compensation assembly; 3011, connecting pipe; 3012, closing plate; 3013, inner pipe; 3014, limiting groove; 3015, reset spring; 3016, push rod; 302, sealing assembly; 3021, connecting plate one; 3022, connecting plate two; 3023, push plate; 3024, sealing ring strip; 3025, sealing auxiliary strip; 3026, sealing gasket one; 3027, sealing gasket two. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1, refer to Figure 1 - Figure 3 For the first embodiment of the present application, a fire hydrant valve body is provided, which comprises: a valve pipe 100, a cleaning unit 200, and a sealing compensation unit 300.

[0029] The cleaning unit 200 comprises a valve rod assembly 201 rotatably arranged at the top of the valve pipe 100, and a scraping assembly 202 rotatably arranged at the bottom of the valve rod assembly 201, and the scraping assembly 202 is rotatably connected with the valve pipe 100. The sealing compensation unit 300 comprises a compensation assembly 301 arranged on both sides of the valve pipe 100, and a sealing assembly 302 arranged on the compensation assembly 301, and the sealing assembly 302 is slidably connected with the valve rod assembly 201. When the fire hydrant is needed to be used, the valve rod assembly 201 is rotated to open the valve to discharge water, and at the same time the scraping assembly 202 at the bottom of the valve rod assembly 201 is rotated in the opposite direction in the ball valve core 2018 inside the valve rod assembly 201, so that the scraping assembly 202 can scrape the inner wall of the ball valve core 2018, preventing impurities from being adsorbed inside the ball valve core 2018 for a long time, causing the ball valve core 2018 to be corroded.

[0030] While the valve is opened by rotating the valve stem assembly 201, the scraping assembly 202 rotates in the opposite direction to clean and remove impurities from the inside of the valve stem assembly 201. The cleaned impurities flow out with the water, effectively preventing damage to the valve stem assembly 201 caused by impurities in the water. Simultaneously, as the valve stem assembly 201 rotates, the ball valve core 2018 is pressed against the sealing assembly 302. Due to the effect of the compensating assembly 301, the sealing assembly 302 generates a reverse compressive force, allowing it to remain adhered to the ball valve core 2018 even after being compressed. On the outer wall of 018, during the long-term rotation of the ball valve core 2018, the ball valve core 2018 continuously rubs against the sealing assembly 302, causing the sealing ring 3024 inside the sealing assembly 302 to be worn. However, under the action of the compensation assembly 301, the sealing assembly 302 can always be in contact with the outer wall of the ball valve core 2018, ensuring that no gaps are generated between the ball valve core 2018 and the sealing assembly 302. Furthermore, through the multiple seals of the sealing assembly 302, the sealing performance between the valve stem assembly 201 and the sealing assembly 302 is effectively guaranteed.

[0031] During use, when the fire hydrant needs to be used, the valve stem assembly 201 is rotated to open the valve and allow water to flow. At the same time as the valve stem assembly 201 is rotated open, the scraping component 202 at the bottom of the valve stem assembly 201 rotates in the opposite direction inside the ball valve core 2018. This allows the scraping component 202 to scrape the inner wall of the ball valve core 2018, preventing impurities from adhering to the inside of the ball valve core 2018 and causing corrosion during long-term use.

[0032] While the valve is opened by rotating the valve stem assembly 201, the scraping assembly 202 rotates in the opposite direction to clean and remove impurities from the inside of the valve stem assembly 201. The cleaned impurities flow out with the water, effectively preventing damage to the valve stem assembly 201 caused by impurities in the water. Simultaneously, as the valve stem assembly 201 rotates, the ball valve core 2018 is pressed against the sealing assembly 302. Due to the action of the compensating assembly 301, the sealing assembly 302 generates a reverse compressive force, allowing it to remain adhered to the outer wall of the ball valve core 2018 even after being compressed. Furthermore, during the prolonged rotation of the ball valve core 2018, the ball valve core 2018 continuously interacts with the sealing assembly. Friction in component 302 causes wear on the sealing ring 3024 inside the sealing component 302. However, under the action of the compensation component 301, the sealing component 302 can always be in contact with the outer wall of the ball valve core 2018, ensuring that no gaps are generated between the ball valve core 2018 and the sealing component 302. Furthermore, through multiple seals in the sealing component 302, the sealing performance between the valve stem assembly 201 and the sealing component 302 is effectively guaranteed. This avoids the problem of decreased sealing performance caused by wear of the sealing ring and adsorption of impurities in traditional ball valves. It also improves the service life of fire hydrants, reduces maintenance costs, reduces water waste caused by leakage, and improves overall efficiency and environmental performance.

[0033] Example 2, refer to Figure 1 - Figure 6 This is the second embodiment of the present invention, which differs from the first embodiment in that: the valve stem assembly 201 includes a mounting shell 2011 disposed on the top of the valve tube 100, a rotating member 2012 rotatably disposed inside the mounting shell 2011, an upper gear disk 2013 disposed on the outer diameter of the rotating member 2012, a first gear 2014 disposed inside the upper gear disk 2013, a second gear 2015 disposed on the outer diameter of the first gear 2014, and a lower gear disk 2016 disposed on the outer diameter of the second gear 2015. Both the first gear 2014 and the second gear 2015 pass through the lower gear disk 2016 and are connected to the mounting shell 2011. A connecting collar 2017 is disposed at the bottom of the lower gear disk 2016, and the connecting collar 2017 is rotatably connected to the rotating member 2012. A ball valve core 2018 is disposed at the bottom of the connecting collar 2017, and the ball valve core 2018 is slidably connected to the valve tube 100.

[0034] Furthermore, the scraping assembly 202 includes a rotating rod 2021 disposed at the bottom of the rotating component 2012, an arc-shaped rotating component 2022 disposed on the outer diameter of the rotating rod 2021, and a closing component 2023 rotatably disposed on the top and bottom of the ball valve core 2018. The closing component 2023 is rotatably connected to the rotating component 2012. When using the fire hydrant, the operator rotates the rotating component 2012. At the same time as the rotating component 2012 rotates, the upper gear disk 2013 on the outer diameter of the rotating component 2012 also rotates. Simultaneously, the gear one 2014 inside the upper gear disk 2013 meshes and rotates with the upper gear disk 2013. During the rotation of the upper gear disk 2013, the gear two 2015 also rotates, causing the lower gear disk 2016 to carry the connecting... The collar 2017 rotates together with the ball valve core 2018 to open the fire hydrant. While the rotating component 2012 is opening the fire hydrant, the rotating rod 2021 and the arc-shaped rotating component 2022 at the bottom of the rotating component 2012 also rotate together with the rotating component 2012. This causes the arc-shaped rotating component 2022 to rotate and scrape the inner wall of the ball valve core 2018, preventing impurities from adhering to the inner wall of the ball valve core 2018 and corroding it. So, while the rotating component 2012 is opening the ball valve core 2018, the rotating rod 2021 and the arc-shaped rotating component 2022 also rotate in the opposite direction, thereby cleaning the inner wall of the ball valve core 2018 and letting the cleaned impurities flow out with the water flow.

[0035] During use, when operating the fire hydrant, the operator rotates the rotating component 2012. Simultaneously, the upper gear 2013 on the outer diameter of the rotating component 2012 rotates, and the gear 1 2014 inside the upper gear 2013 meshes and rotates with it. During the rotation of the upper gear 2013, gear 2 2015 also rotates, causing the lower gear 2016, along with the connecting collar 2017 and the ball valve core 2018, to rotate, thus opening the fire hydrant. At the same time as rotating the rotating component 2012 opens the fire hydrant, the rotating rod 2021 at the bottom of the rotating component 2012 interacts with the arc-shaped rotating component 202... 2. It also rotates together with the rotating part 2012, so that the arc-shaped rotating part 2022 can rotate and scrape the inner wall of the ball valve core 2018, preventing impurities from adhering to the inner wall of the ball valve core 2018 and corroding it. So that when the rotating part 2012 opens the ball valve core 2018, the rotating rod 2021 and the arc-shaped rotating part 2022 also rotate in the opposite direction, thereby cleaning the inner wall of the ball valve core 2018. At the same time, the cleaned impurities are flowed out with the water flow, which effectively removes impurities from the inner wall of the ball valve core 2018, prevents corrosion caused by impurity adsorption, and reduces the frequency of maintenance.

[0036] The remaining structure is the same as that in Example 1.

[0037] Example 3, referring to Figure 1 - Figure 8 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the compensation component 301 includes a connecting pipe 3011 disposed on both sides of the valve pipe 100, a closing plate 3012 disposed on one side of the connecting pipe 3011, and an inner pipe 3013 disposed inside the connecting pipe 3011. The inner pipe 3013 is provided with a limiting groove 3014 inside, and a return spring 3015 is disposed inside the limiting groove 3014. The other end of the return spring 3015 is provided with a push rod 3016, and the push rod 3016 is slidably connected to the limiting groove 3014.

[0038] Furthermore, the sealing assembly 302 includes a push plate 3023 disposed at one end of the push rod 3016, a second connecting plate 3022 disposed on one side of the push plate 3023, and a first connecting plate 3021 disposed at the other end of the second connecting plate 3022. The first connecting plate 3021 is connected to the inner tube 3013. A second sealing gasket 3027 is disposed on the outer diameter of the first connecting plate 3021, and the second sealing gasket 3027 is connected to the inner tube 3013. A first sealing gasket 3026 is disposed on the outer diameter of the second connecting plate 3022. 026 is slidably connected to push rod 3016. A sealing ring 3024 is provided on one side of push plate 3023. A sealing auxiliary strip 3025 is provided on the outer diameter of sealing ring 3024, and sealing auxiliary strip 3025 is connected to push plate 3023. Sealing ring 3024 and sealing auxiliary strip 3025 are slidably connected to ball valve core 2018. During the long-term rotation of ball valve core 2018, ball valve core 2018 and sealing ring 3024 on the outer diameter are constantly rubbed, causing sealing ring 3024 to wear out. During the frictional wear of the sealing ring 3024, the return spring 3015 inside the inner tube 3013 presses against the push rod 3016, thereby allowing the push rod 3016 to press against the push plate 3023. This ensures that the sealing ring 3024 on the push plate 3023 remains in contact with the outer diameter of the ball valve core 2018. When the sealing ring 3024 is worn down by friction, the return spring 3015 and the push rod 3016 also press against the push plate 3023, ensuring that the sealing ring 3024 remains in contact with the surface of the ball valve core 2018. This ensures the sealing performance of the ball valve core 2018. At the same time, the sealing auxiliary strip 3025 on the outer diameter of the sealing ring 3024 is also attached between the ball valve core 2018 and the inner tube 3013, further increasing the sealing performance of the ball valve core 2018. Furthermore, multiple sealing protection is provided by the sealing gaskets 3026 and 3027 on the connecting plate 2 3022 and the connecting plate 1 3021, preventing damage to the ball valve core 2018 during long-term use, which could lead to gaps in the seal and leakage.

[0039] During use, as the ball valve core 2018 rotates for an extended period, it continuously rubs against the sealing ring 3024 on its outer diameter, causing the sealing ring 3024 to wear down. As the sealing ring 3024 wears down, the return spring 3015 inside the inner tube 3013 presses against the push rod 3016, which in turn presses against the push plate 3023. This ensures that the sealing ring 3024 on the push plate 3023 remains in contact with the outer diameter of the ball valve core 2018. Furthermore, as the sealing ring 3024 wears down, the return spring 3015 and the push rod 3016 also press against the push plate 3023, maintaining the sealing ring 3024's constant contact with the surface of the ball valve core 2018, thus ensuring... The ball valve core 2018 has excellent internal sealing, and the sealing auxiliary strip 3025 on the outer diameter of the sealing ring 3024 also fits between the ball valve core 2018 and the inner tube 3013, further increasing the internal sealing of the ball valve core 2018. Multiple sealing protection is provided by the sealing gaskets 3026 and 3027 on the connecting plate 2 3022 and connecting plate 1 3021, preventing damage to the ball valve core 2018 during long-term use, which could lead to gaps in the seal and leakage. This achieves automatic sealing compensation, and the multi-stage sealing design further enhances the sealing performance, avoiding the sealing performance degradation caused by seal ring wear and impurity adsorption in traditional ball valves. It also increases the service life of the fire hydrant and reduces maintenance costs.

[0040] The remaining structure is the same as that in Example 2.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fire hydrant valve body, comprising a valve pipe (100), characterized in that: It also includes, The cleaning unit (200) includes a valve stem assembly (201) rotatably disposed on the top of the valve tube (100) and a scraping assembly (202) rotatably disposed on the bottom of the valve stem assembly (201), and the scraping assembly (202) is rotatably connected to the valve tube (100); The valve stem assembly (201) includes a mounting housing (2011) disposed on the top of the valve tube (100), a rotating component (2012) rotatably disposed inside the mounting housing (2011), an upper gear disk (2013) disposed on the outer diameter of the rotating component (2012), a gear one (2014) disposed inside the upper gear disk (2013), a gear two (2015) disposed on the outer diameter of the gear one (2014), and a lower gear disk (2016) disposed on the outer diameter of the gear two (2015), wherein both the gear one (2014) and the gear two (2015) pass through the lower gear disk (2016) and are connected to the mounting housing (2011); The sealing compensation unit (300) includes compensation components (301) disposed on both sides of the valve pipe (100) and a sealing component (302) disposed on the compensation components (301), and the sealing component (302) is slidably connected to the valve stem assembly (201).

2. The fire hydrant valve body according to claim 1, characterized in that: A connecting collar (2017) is provided at the bottom of the lower gear plate (2016), and the connecting collar (2017) is rotatably connected to the rotating part (2012).

3. The fire hydrant valve body according to claim 2, characterized in that: A ball valve core (2018) is provided at the bottom of the connecting collar (2017), and the ball valve core (2018) is slidably connected to the valve pipe (100).

4. The fire hydrant valve body according to claim 3, characterized in that: The scraping assembly (202) includes a rotating rod (2021) disposed at the bottom of the rotating member (2012), an arc-shaped rotating member (2022) disposed on the outer diameter of the rotating rod (2021), and a closing member (2023) rotatably disposed at the top and bottom of the ball valve core (2018), and the closing member (2023) is rotatably connected to the rotating member (2012).

5. The fire hydrant valve body according to claim 4, characterized in that: The compensation assembly (301) includes a connecting pipe (3011) disposed on both sides of the valve pipe (100), a closing plate (3012) disposed on one side of the connecting pipe (3011), and an inner pipe (3013) disposed inside the connecting pipe (3011).

6. The fire hydrant valve body according to claim 5, characterized in that: The inner tube (3013) is provided with a limiting groove (3014), and a reset spring (3015) is provided inside the limiting groove (3014). A push rod (3016) is provided at the other end of the reset spring (3015), and the push rod (3016) is slidably connected to the limiting groove (3014).

7. The fire hydrant valve body according to claim 6, characterized in that: The sealing assembly (302) includes a push plate (3023) disposed at one end of the push rod (3016), a second connecting plate (3022) disposed on one side of the push plate (3023), and a first connecting plate (3021) disposed at the other end of the second connecting plate (3022), and the first connecting plate (3021) is connected to the inner tube (3013).

8. The fire hydrant valve body according to claim 7, characterized in that: The outer diameter of the connecting plate 1 (3021) is provided with a sealing gasket 2 (3027), and the sealing gasket 2 (3027) is connected to the inner tube (3013).

9. The fire hydrant valve body according to claim 8, characterized in that: The outer diameter of the connecting plate 2 (3022) is provided with a sealing gasket 1 (3026), and the sealing gasket 1 (3026) is slidably connected to the push rod (3016).

10. The fire hydrant valve body according to claim 9, characterized in that: A sealing ring (3024) is provided on one side of the push plate (3023), and a sealing auxiliary strip (3025) is provided on the outer diameter of the sealing ring (3024). The sealing auxiliary strip (3025) is connected to the push plate (3023), and the sealing ring (3024) and the sealing auxiliary strip (3025) are slidably connected to the ball valve core (2018).

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