Steel integrated welding ball valve

Abstract

The utility model relates to the field of ball valves, in particular to a steel integrated welding ball valve. The valve comprises a valve body. The two sides of the valve body are respectively provided with a channel. The valve seat is arranged in the valve body; cavities communicating with the channels on the two sides are formed in the valve seat. The valve ball is arranged in the cavity; the upper end of the valve ball is connected with a valve rod rotationally connected with the valve body; the upper end of the valve rod is connected with a handle controlling opening and closing of the ball valve. And the sealing assembly is arranged between the valve seat and the valve ball and is used for blocking gas / liquid circulation between the channel and the cavity. And the liquid discharging assembly is arranged at the lower end of the valve body and is used for discharging accumulated liquid in the cavity. After the ball valve is closed, the spring pushes the sealing ring to be extruded into the second annular groove, so that gas / liquid circulation between the channel and the cavity is blocked, and the sealing performance of the ball valve is improved. The first ball and the second ball roll along with rotation of the valve ball, friction force between the valve seat and the valve ball and friction force between the sealing ring and the valve ball are reduced, and therefore abrasion of the ball valve is reduced.

Description

Technical Field

[0001] The utility model relates to the field of ball valves, in particular to a steel integrated welded ball valve. Background Art

[0002] Ball valve is a common type of valve used to control the flow of fluid in a pipeline. Ball valve has fast opening and closing functions. It only needs to rotate 90 degrees to fully open or close the fluid channel. Therefore, it has a fast response speed and is suitable for occasions that require fast operation.

[0003] A Chinese patent document with authorization announcement number CN218992422U proposes an integrated antifreeze one-way sealing ball valve, including a valve body, a ball bag fixed on the valve body, and a ball valve body rotatably installed in the ball bag. A valve cavity connected to the valve body is opened in the middle of the ball valve body, and an antifreeze component is installed inside the valve cavity.

[0004] In the above application, although the residual liquid in the ball valve body will automatically flow into the drain groove, and the drain groove is connected to the drain pipe, so the liquid can be effectively prevented from remaining in the valve body, the sealing performance between the ball valve body and the valve body is not high, resulting in the possibility that the liquid may still flow through the gap between the ball valve body and the valve body after the ball valve is closed. And when the ball valve rotates, the ball valve body and the valve body rub against each other, which may cause the ball valve body and the valve body to be worn, thereby reducing the service life of the ball valve. Utility Model Content

[0005] In view of the problems existing in the background technology, a steel one-piece welded ball valve is proposed.

[0006] The utility model proposes a steel one-piece welded ball valve, comprising a valve body. Channels are respectively provided on both sides of the valve body. A valve seat is arranged in the valve body; cavities are respectively provided in the valve seat and are connected to the channels on both sides. A valve ball is arranged in the cavity; a valve stem rotatably connected to the valve body is connected to the upper end of the valve ball; a handle for controlling the opening and closing of the ball valve is connected to the upper end of the valve stem. A sealing component is arranged between the valve seat and the valve ball to block the flow of gas / liquid between the channel and the cavity. And a liquid discharge component is arranged at the lower end of the valve body to discharge the accumulated liquid in the cavity.

[0007] Preferably, an annular groove 1 is symmetrically provided on both sides of the valve ball; the sealing assembly includes a plurality of springs evenly arranged at the bottom of the annular groove 1; the other ends of the springs are commonly connected to a sealing ring; an adjustment slope is symmetrically provided on the side of the sealing ring facing the valve ball; an annular groove 2 matching the sealing ring is symmetrically provided on both sides of the valve ball; when the ball valve is in a closed state, the two sealing rings are respectively engaged with the corresponding annular groove 2.

[0008] Preferably, rubber rings are respectively provided on both sides of the second annular groove.

[0009] Preferably, a plurality of balls are rotatably connected to a side of the sealing ring facing the valve ball.

[0010] Preferably, a plurality of balls 2 are rotatably connected to the inner wall of the cavity.

[0011] Preferably, the drain assembly includes a drain pipe arranged at the lower end of the valve body; the upper end of the drain pipe is connected to the cavity, and the lower end is detachably threadedly connected to a liquid collecting bottle, and the drain pipe is connected to the liquid collecting bottle; the lower end of the liquid collecting bottle is slidably connected to a sliding rod; the upper end of the sliding rod is connected to a sealing plate of the same size as the pipe mouth of the drain pipe, and the lower end passes through the liquid collecting bottle.

[0012] Preferably, a limiting ring for limiting the moving direction of the sliding rod is provided at the bottom end of the liquid collecting bottle.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] (1) The steel one-piece welded ball valve is closed by turning the handle to drive the valve stem and the valve ball to rotate. After the ball valve is closed, the elastic force of the spring will push the sealing ring into the annular groove 2, thereby blocking the gas / liquid flow between the channel and the cavity, thereby improving the sealing performance of the ball valve.

[0015] (2) When the steel one-piece welded ball valve is closed, both the first ball and the second ball will roll along with the rotation of the valve ball, thereby reducing the friction between the valve seat and the sealing ring and the valve ball, thereby reducing the wear of the ball valve and improving the durability of the ball valve.

[0016] (3) The steel one-piece welded ball valve can be driven downward by holding the sliding rod and dragging it downward to drive the sealing plate downward to detach from the drain pipe, so that the accumulated liquid in the cavity flows into the liquid collecting bottle along the drain pipe, thereby preventing the liquid from being retained in the cavity for a long time and corroding the valve seat and valve ball, or causing deterioration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the sealing component structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the liquid discharge component of the utility model.

[0021] Figure numerals: 1. valve body; 101. channel; 2. valve seat; 201. cavity; 202. ball bearing 2; 3. valve ball; 4. valve stem; 5. handle; 6. sealing assembly; 61. annular groove 1; 62. spring; 63. sealing ring; 64. ball bearing 1; 65. annular groove 2; 66. rubber ring; 7. drain assembly; 71. drain pipe; 72. liquid collecting bottle; 73. slide rod; 74. sealing plate; 75. limit ring. DETAILED DESCRIPTION

[0022] Embodiment 1

[0023] like Figure 1-3 As shown, the utility model proposes a steel one-piece welded ball valve, comprising a valve body 1, a valve seat 2, a valve ball 3, a sealing assembly 6 and a drain assembly 7. Channels 101 are respectively provided on both sides of the valve body 1. The valve seat 2 is arranged in the valve body 1; cavities 201 are respectively provided in the valve seat 2 and are connected to the channels 101 on both sides. The valve ball 3 is arranged in the cavity 201; the valve seat 2 can limit the valve ball 3; the upper end of the valve ball 3 is connected to a valve stem 4 rotatably connected to the valve body 1; the upper end of the valve stem 4 is connected to a handle 5 for controlling the opening and closing of the ball valve. The sealing assembly 6 is arranged between the valve seat 2 and the valve ball 3 to block the gas / liquid flow between the channel 101 and the cavity 201. The drain assembly 7 is arranged at the lower end of the valve body 1 to discharge the accumulated liquid in the cavity 201.

[0024] To further illustrate, annular grooves 61 are symmetrically provided on both sides of the valve ball 3; the sealing assembly 6 includes a plurality of springs 62 uniformly arranged at the bottom of the annular groove 61; the other ends of the springs 62 are commonly connected to a sealing ring 63; the sealing ring 63 is symmetrically provided with adjusting inclined surfaces on one side facing the valve ball 3; annular grooves 65 matching the sealing ring 63 are symmetrically provided on both sides of the valve ball 3; when the ball valve is in a closed state, the two sealing rings 63 are respectively engaged with the corresponding annular grooves 65 to block the flow of gas / liquid between the channel 101 and the cavity 201, and prevent gas / liquid from flowing through the cavity 201 after the ball valve is closed, thereby improving the sealing performance of the ball valve.

[0025] To further illustrate, rubber rings 66 are respectively provided on both sides of the second annular groove 65 to effectively prevent gas / liquid leakage and further improve the sealing performance of the ball valve.

[0026] Further, the sealing ring 63 is rotatably connected to the side facing the valve ball 3 with a plurality of balls 64. When the valve ball 3 rotates, the sealing ring 63 can slide on the surface of the valve ball 3 through the balls 64, thereby reducing the contact area between the sealing ring 63 and the valve ball 3 when the valve ball 3 rotates, and reducing the friction force, thereby reducing the wear of the valve ball 3 and the sealing ring 63, thereby improving the durability of the valve ball 3 and reducing the maintenance cost of the ball valve.

[0027] Further, a plurality of balls 202 are rotatably connected to the inner wall of the cavity 201. When the valve ball 3 rotates, the balls 202 on the valve seat 2 slide on the surface of the valve ball 3, thereby reducing the contact area between the valve seat 2 and the valve ball 3 when the valve ball 3 rotates, and reducing the friction force, thereby reducing the wear of the valve seat 2 and the valve ball 3, thereby improving the durability of the ball valve and increasing the service life of the ball valve.

[0028] Embodiment 2

[0029] like Figure 2 and Figure 4 As shown, the utility model proposes a steel integrated welded ball valve. Compared with the first embodiment, this embodiment further includes: the drainage assembly 7 includes a drainage pipe 71 arranged at the lower end of the valve body 1; the upper end of the drainage pipe 71 is connected to the cavity 201, and the lower end is detachably threadedly connected to the liquid collecting bottle 72, and the drainage pipe 71 is connected to the liquid collecting bottle 72; the lower end of the liquid collecting bottle 72 is slidably connected to the slide bar 73; the upper end of the slide bar 73 is connected to a sealing plate 74 of the same size as the pipe mouth of the drainage pipe 71, and the lower end is arranged through the liquid collecting bottle 72. The accumulated liquid retained in the cavity 201 can be discharged and collected in the liquid collecting bottle 72, so as to prevent the liquid from being retained in the cavity 201 for a long time to corrode the valve seat 2 and the valve ball 3, or deteriorate.

[0030] Further, a limiting ring 75 is provided at the bottom of the liquid collecting bottle 72 to limit the moving direction of the slide bar 73. The slide bar 73 is always kept moving up and down to prevent the sealing plate 74 from being separated from the discharge pipe 71 and unable to be re-inserted into the discharge pipe 71, thereby preventing the pipe opening of the discharge pipe 71 from being blocked.

[0031] The working principle of the utility model is as follows: when working, the handle 5 is turned to drive the valve stem 4 and the valve ball 3 to rotate, thereby closing the ball valve. When the ball valve is closed, the second ball 202 on the valve seat 2 and the first ball 64 on the sealing ring 63 will roll along with the rotation of the valve ball 3, reducing the contact area between the valve seat 2 and the sealing ring 63 and the valve ball 3, and also reducing the friction, thereby reducing the wear of the ball valve and improving the durability of the ball valve. After the ball valve is closed, the elastic force of the spring 62 will push the sealing ring 63 into the annular groove 2 65, thereby blocking the gas / liquid flow between the channel 101 and the cavity 201, thereby improving the sealing performance of the ball valve.

[0032] When liquid is retained in the cavity 201, hold the slide bar 73 and drag it downward to drive the sealing plate 74 downward to detach from the drain pipe 71, so that the liquid in the cavity 201 flows into the liquid collecting bottle 72 along the drain pipe 71, thereby preventing the liquid from being retained in the cavity 201 for a long time to corrode the valve seat 2 and the valve ball 3, or causing deterioration.

[0033] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A steel one-piece welded ball valve, characterized in that: include A valve body (1); channels (101) are respectively provided on both sides of the valve body (1); A valve seat (2) is arranged in the valve body (1); a cavity (201) is provided in the valve seat (2) and is communicated with the channels (101) on both sides respectively; A valve ball (3) is arranged in the cavity (201); the upper end of the valve ball (3) is connected to a valve stem (4) rotatably connected to the valve body (1); the upper end of the valve stem (4) is connected to a handle (5) for controlling the opening and closing of the ball valve; A sealing component (6) is arranged between the valve seat (2) and the valve ball (3) to block the flow of gas / liquid between the channel (101) and the cavity (201); And a liquid discharge component (7) is arranged at the lower end of the valve body (1) and is used to discharge the accumulated liquid in the cavity (201).

2. A steel one-piece welded ball valve according to claim 1, characterized in that: Annular grooves (61) are symmetrically provided on both sides of the valve ball (3); the sealing assembly (6) comprises a plurality of springs (62) evenly arranged at the bottom of the annular groove (61); the other ends of the springs (62) are commonly connected to a sealing ring (63); an adjusting inclined surface is symmetrically provided on one side of the sealing ring (63) facing the valve ball (3); annular grooves (65) (65) matching with the sealing ring (63) are symmetrically provided on both sides of the valve ball (3); when the ball valve is in a closed state, the two sealing rings (63) are respectively engaged with the corresponding annular grooves (65).

3. A steel one-piece welded ball valve according to claim 2, characterized in that: Rubber rings (66) are respectively arranged on both sides of the second annular groove (65).

4. A steel one-piece welded ball valve according to claim 2, characterized in that: A plurality of balls (64) are rotatably connected to the side of the sealing ring (63) facing the valve ball (3).

5. The steel one-piece welded ball valve according to claim 1, characterized in that: A plurality of second balls (202) are rotatably connected to the inner wall of the cavity (201).

6. A steel one-piece welded ball valve according to claim 1, characterized in that: The liquid discharge assembly (7) comprises a liquid discharge pipe (71) arranged at the lower end of the valve body (1); the upper end of the liquid discharge pipe (71) is connected to the cavity (201), and the lower end is detachably threadedly connected to a liquid collecting bottle (72), and the liquid discharge pipe (71) is connected to the liquid collecting bottle (72); the lower end of the liquid collecting bottle (72) is slidably connected to a slide rod (73); the upper end of the slide rod (73) is connected to a sealing plate (74) having the same size as the pipe opening of the liquid discharge pipe (71), and the lower end is arranged to penetrate the liquid collecting bottle (72).

7. A steel one-piece welded ball valve according to claim 6, characterized in that: A limiting ring (75) for limiting the moving direction of the sliding rod (73) is arranged at the bottom end of the liquid collecting bottle (72).

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