Ball valve with double-sealing effect

Abstract

The utility model relates to the technical field of ball valves, and discloses a ball valve with a double-sealing effect, which comprises a shell, expansion components are arranged on the left side and the right side of the shell in a penetrating manner, a valve ball body is arranged at the axis of the inner side of the shell in a penetrating manner, and a positioning component is arranged at the top end of the shell. The bottom of the positioning assembly is located over the valve ball body, a stop block is fixedly connected to the front side of the positioning assembly, and a rotating ring is connected to the outer side of the top of the positioning assembly in a sleeving mode. Through the ingenious structure of the lock valve assembly, a center rod, a rotating shaft and lock teeth, the opening degree of a valve ball can be accurately controlled, the control precision of fluid flow is improved, and the accuracy and stability of flow adjustment of the valve under various working conditions are greatly improved; the expansion assembly effectively enhances the sealing performance of the connecting position of the valve ball body and the shell, reliable guarantee is provided for preventing fluid leakage, and safe and stable operation of a system can be guaranteed whether high-pressure fluid or corrosive media are treated.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve with double sealing effects. Background Art

[0002] In the field of industrial fluid control, ball valves are a commonly used valve device, and their performance directly affects the operating efficiency, safety and stability of the entire system.

[0003] Traditional ball valves have a relatively rudimentary position adjustment mechanism and often lack precise control over their opening. Their internal transmission structure is not precisely designed to accurately control the rotation angle and position of the valve ball. When exposed to high-pressure fluids, seals can easily deform or damage due to excessive pressure, leading to leakage.

[0004] In addition, the internal components of traditional ball valves lack effective positioning and limiting measures. When they are in long-term operation or subjected to external forces such as fluid impact, the components are prone to displacement and shaking. On the one hand, this will destroy the tight fit between the valve ball and the seal, resulting in seal failure. On the other hand, it may cause operational failures such as valve stem sticking and inflexible rotation, which increases equipment maintenance costs and downtime, reduces production continuity and reliability, and seriously affects the company's economic benefits and production progress. Utility Model Content

[0005] The purpose of the utility model is to solve the problems of traditional ball valves due to simple valve position adjustment mechanism, imprecise transmission structure resulting in poor opening control, weak pressure-bearing seals and easy leakage, lack of effective positioning and limiting of internal components, and easy displacement and shaking due to external forces, resulting in sealing failure and operational failure. The utility model provides a ball valve with double sealing effect.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A ball valve with a double sealing effect comprises an outer shell, expansion components are provided through the left and right sides of the outer shell, a valve ball is passed through the inner axis of the outer shell, a positioning component is provided at the top of the outer shell, the bottom of the positioning component is located directly above the valve ball, a stopper is fixedly connected to the front side of the positioning component, a swivel is sleeved on the outer side of the top of the positioning component, a limiting component is provided on the front side of the positioning component, a lock valve component is connected through the inner axis of the swivel, the lock valve assembly comprises a center rod, a rotating shaft and a locking tooth, the inner side of the rotating shaft is sleeved on the middle and upper part of the outer side of the center rod, the inner end of the locking tooth is provided at the outer peripheral side wall of the rotating shaft, and a handle is sleeved on the rear side wall of the swivel.

[0008] Furthermore, the expansion component includes a sealing position, a card block and a card tooth. The outer wall of the card block is connected to the inner wall of the sealing position. The top side of the card tooth is fixedly connected to the bottom side of the card block. The bottom side of the card tooth is engaged with the inner bottom of the sealing position. The card block and the sealing position cooperate with each other, and the outer wall of the card block is tightly fitted with the inner wall of the sealing position.

[0009] Furthermore, the positioning assembly includes a valve channel and a tooth position, the bottom end of the valve channel is fixedly connected to the top side of the shell, the limit assembly is located at the outer wall of the valve channel, the outer side of the bottom end of the lock valve assembly passes through and is movably connected to the inner wall of the tooth position, and the lock tooth interacts with the tooth position in the positioning assembly to realize the positioning and locking function of the valve ball.

[0010] Furthermore, the outer end of the tooth position is fixedly connected to the inner side wall of the valve channel, and the valve channel in the positioning assembly provides a flow path for the fluid.

[0011] Furthermore, the limiting assembly includes a slide groove and a slide rod. The slide groove is arranged on the outer side wall of the positioning assembly. The slide rod in the limiting assembly slides in the slide groove to limit the extension handle at the side wall of the entire swivel.

[0012] Furthermore, the side wall of the slide rod is slidably connected to the slide groove, and the slide rod in the limiting assembly slides in the slide groove, which can limit the extension handle at the side wall of the entire swivel.

[0013] Furthermore, the outer bottom end of the lock valve assembly extends to the inner side of the positioning assembly by passing through the inner side of the rotating ring, and the lock teeth are driven to rotate by the rotating shaft, and the lock teeth interact with the teeth in the positioning assembly.

[0014] Compared with the prior art, the present invention provides a ball valve with a double sealing effect, which has the following beneficial effects:

[0015] This ball valve with double sealing effect can accurately control the opening of the valve ball through the ingenious structure of the center rod, rotating shaft and locking teeth of its locking valve assembly, so as to improve the accuracy of fluid flow control and greatly improve the accuracy and stability of the valve in flow regulation under various working conditions; the expansion component effectively enhances the sealing performance of the connection between the valve ball and the outer shell, and provides reliable protection against fluid leakage. Whether it is processing high-pressure fluid or corrosive media, it can ensure the safe and stable operation of the system and effectively reduce safety accidents, environmental pollution and economic losses caused by leakage; the positioning component not only provides a reasonable flow path for the fluid, but also plays a key role in accurately positioning the valve ball in the overall structure. It cooperates with the limit component to effectively limit the displacement and shaking of the components, significantly reducing the risk of sealing failure and the probability of operational failure due to component offset, and greatly improving the reliability and durability of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structural connection of this utility;

[0017] Figure 2 This is a schematic diagram of the internal structure connections of the practical expansion component;

[0018] Figure 3 This is a schematic diagram of the bottom structure between the practical clamping block and the clamping teeth;

[0019] Figure 4 This is a schematic diagram of the structural connection of the practical limit assembly;

[0020] Figure 5 This is a diagram showing the top structure of the positioning component of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structural connection relationship of the practical lock valve assembly.

[0022] In the figure: 1. Housing; 2. Expansion assembly; 21. Sealing position; 22. Block; 23. Locking tooth; 3. Valve ball; 4. Positioning assembly; 41. Valve channel; 42. Tooth position; 5. Stopper; 6. Rotating ring; 7. Limiting assembly; 71. Slide groove; 72. Slide rod; 8. Valve lock assembly; 81. Center rod; 82. Rotating shaft; 83. Locking tooth; 9. Handle. DETAILED DESCRIPTION

[0023] 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. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0024] like Figures 1-6 As shown, a ball valve with a double sealing effect includes an outer shell 1, and expansion components 2 are provided on the left and right sides of the outer shell 1. A valve ball 3 is passed through the inner axis of the outer shell 1, and a positioning component 4 is provided on the top of the outer shell 1. The bottom of the positioning component 4 is located directly above the valve ball 3. A stopper 5 is fixedly connected to the front side of the positioning component 4, a swivel 6 is sleeved on the outer side of the top of the positioning component 4, a limiting component 7 is provided on the front side of the positioning component 4, a valve lock component 8 is connected to the inner axis of the swivel 6, and a handle 9 is sleeved on the rear side wall of the swivel 6.

[0025] like Figure 1-Figure 3 As shown, the expansion component 2 includes a sealing position 21, a clamping block 22 and a clamping tooth 23. The outer wall of the clamping block 22 is connected to the inner wall of the sealing position 21. The top side of the clamping tooth 23 is fixedly connected to the bottom side of the clamping block 22. The bottom side of the clamping tooth 23 is clamped to the inner bottom of the sealing position 21. The clamping block 22 and the sealing position 21 cooperate with each other. The outer wall of the clamping block 22 is tightly fitted with the inner wall of the sealing position 21, and the clamping teeth 23 are respectively clamped with the inner bottom of the sealing position 21 and related matching parts, forming a reliable sealing structure.

[0026] like Figure 1 and Figure 5 As shown, the positioning assembly 4 includes a valve channel 41 and a tooth position 42. The bottom end of the valve channel 41 is fixedly connected to the top side of the housing 1. The limit assembly 7 is located at the outer side wall of the valve channel 41. The outer side of the bottom end of the lock valve assembly 8 passes through and is movably connected to the inner side wall of the tooth position 42. The outer end of the tooth position 42 is fixedly connected to the inner side wall of the valve channel 41. By controlling the degree of engagement and position of the lock tooth 83 with the tooth position 42, the opening of the valve ball 3 can be accurately determined.

[0027] like Figure 1 and Figure 4 As shown, the limiting assembly 7 includes a slide groove 71 and a slide rod 72. The slide groove 71 is arranged on the outer wall of the positioning assembly 4. The side wall of the slide rod 72 is slidably connected to the slide groove 71. The slide rod 72 in the limiting assembly 7 slides in the slide groove 71 and can limit the extension handle at the side wall of the entire swivel 6. Example 2:

[0028] like Figure 1 and Figure 6As shown, the lock valve assembly 8 includes a center rod 81, a rotating shaft 82 and a lock tooth 83. The inner side of the rotating shaft 82 is sleeved on the upper and middle part of the outer side of the center rod 81, and the inner end of the lock tooth 83 is arranged on the outer peripheral side wall of the rotating shaft 82. The outer bottom end of the lock valve assembly 8 extends to the inner side of the positioning assembly 4 through the inner side of the rotating ring 6, and the lock valve assembly 8 connected at its internal axis rotates accordingly; the center rod 81 in the lock valve assembly 8 serves as the main transmission component, which drives the lock tooth 83 to rotate through the rotating shaft 82, and the lock tooth 83 interacts with the tooth position 42 in the positioning assembly 4.

[0029] Working principle: Figures 1-6 As shown, when the ball valve needs to be operated, the handle 9 is turned, and the handle 9 drives the swivel 6 to rotate. During the rotation of the swivel 6, the lock valve assembly 8 connected to the internal axis thereof rotates accordingly; the center rod 81 in the lock valve assembly 8 serves as the main transmission component, which drives the lock tooth 83 to rotate through the rotating shaft 82. The lock tooth 83 interacts with the tooth position 42 in the positioning assembly 4 to achieve the positioning and locking function of the valve ball 3. By controlling the degree of engagement and position of the lock tooth 83 and the tooth position 42, the opening of the valve ball 3 can be accurately determined, thereby controlling the flow rate of the fluid;

[0030] The expansion assembly 2 plays a key role in sealing the valve ball 3. The clamping block 22 cooperates with the sealing portion 21. The outer wall of the clamping block 22 fits tightly with the inner wall of the sealing portion 21. The latching teeth 23 engage with the inner bottom of the sealing portion 21 and related mating parts, forming a reliable sealing structure to prevent fluid leakage from the connection between the valve ball 3 and the housing 1.

[0031] At the same time, the valve channel 41 in the positioning assembly 4 provides a flow path for the fluid, and the slide rod 72 in the limit assembly 7 slides in the slide groove 71, which can limit the extended handle at the side wall of the entire swivel 6, avoiding problems such as sealing failure or operational failure due to component offset.

Claims

1. A ball valve with a double sealing effect, comprising a housing (1), characterized in that: The left and right sides of the housing (1) are penetrated by expansion components (2), the inner axis of the housing (1) is penetrated by a valve ball (3), the top of the housing (1) is provided with a positioning component (4), the bottom of the positioning component (4) is located directly above the valve ball (3), the front side of the positioning component (4) is fixedly connected to a stopper (5), the top outer side of the positioning component (4) is sleeved with a swivel (6), the front side of the positioning component (4) is provided with a limit component (7), and the inner axis of the swivel (6) is penetrated by a lock valve component (8); The lock valve assembly (8) comprises a center rod (81), a rotating shaft (82) and a locking tooth (83), wherein the inner side of the rotating shaft (82) is sleeved on the upper middle portion of the outer side of the center rod (81), the inner end of the locking tooth (83) is arranged on the outer peripheral side wall of the rotating shaft (82), and a handle (9) is sleeved on the rear side wall of the rotating ring (6).

2. A ball valve with double sealing effect according to claim 1, characterized in that: The expansion component (2) includes a sealing portion (21), a clamping block (22) and a clamping tooth (23), wherein the outer wall of the clamping block (22) is connected to the inner wall of the sealing portion (21), the top side of the clamping tooth (23) is fixedly connected to the bottom side of the clamping block (22), and the bottom side of the clamping tooth (23) is clamped to the inner bottom of the sealing portion (21).

3. The ball valve with double sealing effect according to claim 1, characterized in that: The positioning assembly (4) includes a valve channel (41) and a tooth position (42), the bottom end of the valve channel (41) is fixedly connected to the top side of the housing (1), the limiting assembly (7) is located at the outer side wall of the valve channel (41), and the outer side of the bottom end of the locking valve assembly (8) passes through and is movably connected to the inner side wall of the tooth position (42).

4. A ball valve with double sealing effect according to claim 3, characterized in that: The outer end of the tooth position (42) is fixedly connected to the inner side wall of the valve channel (41).

5. The ball valve with double sealing effect according to claim 1, characterized in that: The limiting assembly (7) comprises a sliding groove (71) and a sliding rod (72), and the sliding groove (71) is arranged on the outer side wall of the positioning assembly (4).

6. The ball valve with double sealing effect according to claim 5, characterized in that: The side wall of the sliding rod (72) is slidably connected to the sliding groove (71).

7. The ball valve with double sealing effect according to claim 1, characterized in that: The outer bottom end of the lock valve assembly (8) extends to the inner side of the positioning assembly (4) by passing through the inner side of the rotating ring (6).

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