Hard sealing ball valve with sealing ring provided with spring

Abstract

The utility model relates to the field of metal hard sealing ball valves, in particular to a hard sealing ball valve with a sealing ring provided with a spring, which comprises a left valve body and a right valve body, the left valve body and the right valve body are detachably connected through a bolt, a ball body is arranged in the left valve body, a support is arranged at the top of the left valve body, a valve rod is arranged in the support, and a sealing ring is arranged in the valve rod. A stuffing box is arranged at the top of the valve rod and located on the inner side of the support, the stuffing pressing plate and the stuffing box are connected through a threaded screw, and a stuffing pressing sleeve is installed at the top of the support. The spring pressing ring, the inclined ring-shaped spring and the spring seat form a stable elastic component to form a sealing structure of the elastic element, and a closed environment which cannot be invaded by a medium is created for the elastic element through the excellent sealing performance and dustproof effect of the front sealing ring and the rear sealing ring, so that the elastic element is prevented from being jammed, and the service life of the elastic element is prolonged. Therefore, the valve is prevented from being locked, and it is guaranteed that the valve body can still provide uniform and stable elasticity under different working conditions and different temperatures.

Description

Technical Field

[0001] This utility model relates to the field of metal hard-seal ball valves, and more particularly to a hard-seal ball valve with a sealing ring and a spring. Background Technology

[0002] Metal hard-seal ball valves are widely used in equipment such as pulverized coal gasification and polysilicon industry. The medium usually contains solid particles with high adhesion and high hardness, such as pulverized coal, slag, slurry or silicon powder.

[0003] Due to the unique characteristics of particulate media, conventional valve seat structures have poor dustproof capabilities, making them susceptible to media intrusion into the working chamber of the elastic element. This can lead to valve jamming, seizing, or inability to open or close due to the elastic element becoming stuck. In such cases, if the actuator continues to output force, it may damage the valve's main operating components, forcing the valve to be taken offline for maintenance and affecting the operation of the production unit.

[0004] Therefore, in view of the problem that the existing hard-seal ball valves have poor dustproof capabilities and are prone to media intrusion into the working chamber of the elastic element, a hard-seal ball valve with a sealing ring and spring can be designed to optimize the valve seat structure, ensure micron-level absolute dustproofness, and prevent the elastic element from being jammed due to media intrusion. Utility Model Content

[0005] To overcome the problem that existing hard-seal ball valves have poor dust prevention capabilities and are prone to media intrusion into the working chamber of the elastic element.

[0006] The technical solution of this utility model is as follows: a hard-seal ball valve with a sealing ring and spring, comprising a left valve body and a right valve body, the left and right valve bodies being detachably connected by bolts, a ball being installed inside the left valve body, a bracket being provided on the top of the left valve body, a valve stem being provided in the bracket, a stuffing box being provided on the top of the valve stem inside the bracket, a packing pressure plate being provided on the upper end of the stuffing box, the packing pressure plate and the stuffing box being connected by a threaded screw, a packing sleeve being installed on the top of the bracket, sealing grooves being provided at both the upper and lower ends of the inner side of the left valve body, the ball being slidably connected to the sealing groove, a support plate being provided on the inner side of the sealing groove outside the ball, valve seat rings being provided on both sides of the sealing groove, a spring pressure ring being provided between the valve seat ring and the inner wall of the left valve body, and the valve seat ring and the ball being slidably connected, a dustproof ring being provided between the end of the valve seat ring and the inner wall of the left valve body.

[0007] Preferably, a spring pressure ring is provided between the valve seat ring and the valve body to achieve an elastic sealing structure, which ensures the sealing effect. At the same time, the elastic structure is not easy to get stuck, preventing the valve from seizing up and improving practicality.

[0008] Preferably, a connecting flange is provided at the left end of the left valve body and the right end of the right valve body.

[0009] As preferred, a through hole is formed on the ball, the through hole is formed from left to right through the ball, and the through hole is matched with the left valve body and the right valve body.

[0010] As preferred, the lower end of the valve rod is connected with the top of the ball, and the upper end of the valve rod is rotationally connected with the left valve body.

[0011] As preferred, the packing is arranged in the packing gland, the lower end of the packing gland extends to the inner side of the packing pressing plate, the top of the packing is connected with the packing gland, the upper end of the packing gland extends to the outer side of the bracket and is provided with a square key, and the square key is connected with the external driving device.

[0012] As preferred, the gasket is arranged between the valve seat ring and the ball, and the valve seat ring is designed in a ring structure.

[0013] As preferred, the spring pressing ring is connected with the left valve body through the spring seat, the two sides of the spring pressing ring are respectively provided with inclined ring-shaped springs, and the ends, away from the spring pressing ring, of the inclined ring-shaped springs are respectively provided with rear sealing rings and front sealing rings.

[0014] The hard sealing ball valve with the sealing ring and the spring has the following beneficial effects:

[0015] 1. The hard sealing ball valve with the sealing ring and the spring comprises a stable elastic assembly composed of the spring pressing ring, the inclined ring-shaped spring and the spring seat, forms a sealing structure of the elastic element, and creates a closed environment for the elastic element which cannot be invaded by the medium through the excellent sealing performance and the dustproof effect of the front and rear sealing rings, so that the elastic element is not jammed, the valve is prevented from being locked, and the valve body can still provide uniform and stable elasticity under different temperatures of various working conditions.

[0016] 2. The hard sealing ball valve with the sealing ring and the spring comprises a stable elastic assembly composed of the spring pressing ring, the inclined ring-shaped spring and the spring seat, so that the front sealing ring becomes a dynamic seal, the rear sealing ring becomes a static seal, and the dynamic and static combination provides reliable sealing for the valve. DRAWINGS

[0017] Figure 1 The hard sealing ball valve with the sealing ring and the spring is shown as a whole structure schematic view.

[0018] Figure 2 The hard sealing ball valve with the sealing ring and the spring is shown as a cross section structure schematic view.

[0019] Figure 3 The hard sealing ball valve with the sealing ring and the spring is shown as a half section structure schematic view.

[0020] Figure 4 The hard sealing ball valve with the sealing ring and the spring is shown as Figure 2 an enlarged structure schematic view of the middle A.

[0021] Figure 5 The utility model discloses a hard sealing ball valve of sealing ring with spring ball body cross section structure schematic diagram.

[0022] Mark explanation: 1, left valve body, 2, rear sealing ring, 3, spring seat, 4, oblique ring annular spring, 5, spring pressure ring, 6, front sealing ring, 7, valve seat ring, 8, dustproof ring, 9, ball body, 10, support plate, 17, right valve body, 22, packing pressure sleeve, 29, packing pressure plate, 30, support, 35, packing box, 41, valve stem. DETAILED DESCRIPTION

[0023] The utility model is further explained below in connection with the drawings and examples.

[0024] Please refer to Figures 1-5 The utility model provides a kind of hard sealing ball valve of sealing ring with spring, including left valve body 1, still including right valve body 17, the left end of left valve body 1 and the right end of right valve body 17 are provided with connecting flange, left valve body 1 and right valve body 17 are detachably connected by bolt, the inside of left valve body 1 is installed with ball body 9, the top of left valve body 1 is provided with support 30, support 30 is provided with valve stem 41, the top of valve stem 41 is located the inside of support 30 and is provided with packing box 35, the upper end of packing box 35 is provided with packing pressure plate 29, and packing pressure plate 29 and packing box 35 are connected by screw thread screw rod between, the top of support 30 is installed with packing pressure sleeve 22, the upper and lower ends of the inside of left valve body 1 are provided with sealing groove, ball body 9 and sealing groove are slidably connected, the inside of sealing groove is located the outside of ball body 9 and is provided with support plate 10, the two sides of sealing groove are provided with valve seat ring 7, spring pressure ring 5 is arranged between valve seat ring 7 and the inner wall of left valve body 1, and valve seat ring 7 and ball body 9 are slidably connected, the end of valve seat ring 7 and the inner wall of left valve body 1 are provided with dustproof ring 8, spring pressure ring 5 is arranged between valve seat ring 7 and valve body, realize elastic sealing structure, guarantee the sealing effect, while elastic structure is not easy to jam, avoid valve lock, improve practicality.

[0025] Please refer to Figure 1 、 Figure 2 And Figure 5 In the embodiment, the through hole is formed by penetrating ball body 9 from left to right, and the through hole is matched with left valve body 1 and right valve body 17, the rotation of ball body 9 in valve body realizes the control of ball body 9, and the through hole is matched with valve body structure.

[0026] Please refer to Figure 2 、 Figure 3 And Figure 5In the embodiment, the lower end of the valve rod 41 is connected with the top of the ball 9, the upper end of the valve rod 41 is rotationally connected with the left valve body 1, the packing is arranged in the packing box 35, the lower end of the packing press sleeve 22 extends to the inner side of the packing pressing plate 29, the top of the packing press sleeve 22 is connected with the packing, the upper end of the packing press sleeve 22 extends to the outer side of the bracket 30 and is provided with a square key connected with the external driving device, the valve rod 41 is connected with the external square key through the packing press sleeve 22 and is connected with the driving device, so as to realize the opening and closing control of the ball valve.

[0027] Please refer to Figure 2 and Figure 4 In the embodiment, the gasket is arranged between the valve seat ring 7 and the ball 9, the valve seat ring 7 is designed in a ring structure, the spring pressing ring 5 is connected with the left valve body 1 through the spring seat 3, the spring pressing ring 5 is provided with the inclined ring-shaped spring 4 on both sides, respectively, the end of the inclined ring-shaped spring 4 away from the spring pressing ring 5 is provided with the rear sealing ring 2 and the front sealing ring 6, respectively, a stable elastic assembly is formed by the spring pressing ring 5, the inclined ring-shaped spring 4 and the spring seat 3, the sealing structure of the elastic element is formed, so that the sealing structure has a certain elastic floating space, which is convenient for adapting to different temperatures and avoiding the seizure of the valve.

[0028] In the working process, the outer wall of the rear sealing ring 2 is coated with a thin layer of lubricating grease, and then is placed in the sealing groove of the valve body, the planar side of the spring seat 3 is placed on the rear sealing ring 2, then the inclined ring-shaped spring 4 is installed in the U-shaped groove of the spring seat 3, then the U-shaped groove of the spring pressing ring 5 is installed towards the spring, then the front sealing ring 6 is taken and the outer wall is coated with a thin layer of lubricating grease, the planar side is placed on the spring pressing ring 5, then the valve seat ring 7 is taken and the dustproof ring 8 is installed in the groove, and then the ball 9 is installed, the ball 9 is connected with the valve rod 41 and the external driving device, so as to conveniently control the opening and closing movement of the ball 9, in use, the inclined ring-shaped spring 4 is given a certain pre-compression amount, so as to ensure a certain radial elastic force, the radial force promotes the spring seat 3 to make the rear sealing ring 2 tightly adhere to the valve body to form a static seal and provide a stable upstream end seal, on the other hand, the inclined ring-shaped spring 4 transmits the force to the front sealing ring 6, so that the valve seat ring 7 is displaced to the side of the ball 9 under the action of the force, so that the sealing surface of the valve seat ring 7 and the sealing surface of the ball 9 tightly adhere to each other to complete the sealing effect, the inclined ring-shaped spring 4 in the closed space will not be blocked by dust and solid particles, so as to maintain a certain space to be compressed or released, so as to provide reliable sealing for the valve and avoid seizure or seizure.

[0029] Through the above steps, the spring pressing ring 5 is arranged between the valve seat ring 7 and the valve body, an elastic sealing structure is realized, the sealing effect is guaranteed, meanwhile, the elastic structure is not easy to jam, the valve is prevented from seizing, and the practicality is improved, so as to solve the problems that the dustproof ability of the existing hard sealing ball valve is poor, and the medium is easy to invade the working chamber of the elastic element.

Claims

1. A hard sealing ball valve with a seal ring spring, comprising a left valve body (1), characterized in that: Also include the right valve body (17), left valve body (1) and right valve body (17) are detachably connected by bolts, the inside of left valve body (1) is installed with ball (9), the top of left valve body (1) is provided with support (30), support (30) is provided with valve stem (41), the inside of valve stem (41) is provided with packing gland (35) at the top of support (30), the upper end of packing gland (35) is provided with packing gland (29), packing gland (29) and packing gland (35) are connected by threaded screw, the top of support (30) is installed with packing gland (22), the upper and lower ends of the inside of left valve body (1) are provided with sealing groove, ball (9) and sealing groove are connected, the inside of sealing groove is provided with support plate (10) at the outside of ball (9), both sides of sealing groove are provided with valve seat ring (7), spring pressing ring (5) is arranged between valve seat ring (7) and the inner wall of left valve body (1), and valve seat ring (7) and ball (9) are connected, dustproof ring (8) is arranged between the end of valve seat ring (7) and the inner wall of left valve body (1).

2. A hard-seated ball valve with a seal ring spring as claimed in claim 1, characterized in that: The left end of left valve body (1) and the right end of right valve body (17) are provided with connecting flanges.

3. A hard-seated ball valve with a seal ring spring as defined in claim 1, characterized in that: A through hole is formed on the ball (9), the through hole penetrates the ball (9) from left to right, and the through hole is matched with the left valve body (1) and the right valve body (17).

4. The hard-seated ball valve with a seal ring spring of claim 1, wherein: The lower end of valve stem (41) is connected with the top of ball (9), and valve stem (41) is rotatably connected with the upper end of left valve body (1).

5. A hard-seated ball valve with a seal ring spring as defined in claim 1, wherein: The packing gland (35) is provided with packing, the lower end of packing gland (22) extends to the inside of packing gland (29), and the packing gland (22) is connected with the top of packing, the upper end of packing gland (22) extends to the outside of support (30) and is provided with a square key, and the square key is connected with an external driving device.

6. A hard-seated ball valve with a seal ring spring as defined in claim 1, wherein: A gasket is arranged between valve seat ring (7) and ball (9), and valve seat ring (7) is designed in an annular structure.

7. A hard-seated ball valve with a seal ring spring as defined in claim 1, wherein: Spring pressing ring (5) is connected with left valve body (1) through spring seat (3), and spring pressing ring (5) is provided with inclined ring-shaped spring (4) on both sides, respectively, and the end of inclined ring-shaped spring (4) away from spring pressing ring (5) is provided with rear sealing ring (2) and front sealing ring (6), respectively.

Images