Cast steel floating ball valve

Abstract

The utility model discloses a cast steel floating ball valve, which is applied to the field of valves and is characterized in that valve pipes are fixedly mounted on two sides of a valve body, a ball valve is rotatably connected in the valve body, a valve rod is fixedly mounted at the top of the ball valve, and a fixing block is fixedly mounted on the surface of the valve rod. Valve seats are fixedly installed on the two sides of the interior of the valve body, a lower sealing gasket and an upper sealing gasket are fixedly installed at the bottom and the top of the surface of the ball valve, the upper and lower connecting positions of the ball valve are sealed, fluid is prevented from flowing out of the upper and lower portions of the ball valve, the using effect of the device is improved, and the sealing performance of the device is improved. A fixing cover is rotatably connected to the surface of the connector, a sealing inner ring is fixedly mounted in the connector, a connecting pipe is rotatably connected to the interior of the connector, and a sealing rubber ring is fixedly mounted on the left side of the interior of the fixing cover, so that the device is relatively simple and convenient to mount, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the field of valves, and particularly relates to a cast steel floating ball valve. Background Art

[0002] The opening and closing parts (ball) of cast steel ball valve are driven by the valve stem and rotate around the axis of the valve stem. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control. The ball of the ball valve is floating. Under the pressure of the medium, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet to ensure the sealing of the outlet.

[0003] The existing cast steel floating ball valve structure is mostly one-piece. After long-term use, the ball valve will be rotated many times, causing the contact surface between the valve seat to be damaged due to multiple switching frictions. Therefore, the internal sealing performance is not ideal, which reduces the use effect of the device. At the same time, when installing the existing device, multiple bolts are needed to fix the connecting pipe with the connecting pipes on both sides of the valve pipe. This connection method is relatively cumbersome, thereby reducing the practicality of the device. Utility Model Content

[0004] The utility model aims to provide a cast steel floating ball valve, which has the advantages of being convenient for sealing the connection between the valve body and the ball valve and for facilitating the installation of the valve body.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a cast steel floating ball valve, wherein valve tubes are fixedly installed on both sides of the valve body, a ball valve is rotatably connected inside the valve body, a hole groove is provided at the bottom inside the valve body, a fixed shaft rod is rotatably connected inside the hole groove through a bearing, a valve stem is fixedly installed on the top of the ball valve, a fixed block is fixedly installed on the surface of the valve stem, valve seats are fixedly installed on both sides inside the valve body, a lower sealing gasket and an upper sealing gasket are fixedly installed on the bottom and top of the surface of the ball valve, a connecting head is fixedly installed on the left side of the valve tube, a fixed cover is rotatably connected on the surface of the connecting head, a sealing inner ring is fixedly installed inside the connecting head, a connecting pipe is rotatably connected inside the connecting head, a sealing rubber ring is fixedly installed on the left side inside the fixed cover, and a through groove is provided inside the fixed cover.

[0006] The above technical solution is adopted: by rotating and installing the ball valve inside the valve body, swinging the rotating handle left and right to drive the internal valve stem to rotate, so that the ball valve at the bottom of the valve stem rotates, installing a lower sealing gasket and an upper sealing gasket on the top and bottom of the ball valve, sealing the surface of the ball valve to prevent the fluid from flowing out of the ball valve from top and bottom, improving the use effect of the device, improving the sealing performance of the device, installing a connecting head on the left side of the valve pipe, inserting the connecting pipe into the connecting head, and fixing it to the left side of the connecting head and the surface of the connecting pipe with a sealing rubber ring, rotating the fixing cover to fix the fixing cover to the surface of the connecting head, so that the installation of the device is relatively simple and the practicality of the device is improved.

[0007] The utility model is further configured that a filler is fixedly installed on the top of the fixing block.

[0008] The above technical solution is adopted to facilitate preventing leakage of the internal sealed medium.

[0009] The utility model is further configured that a shell is fixedly installed on the top of the valve body, and a pressure cover is fixedly installed on the top of the shell.

[0010] The above technical solution is adopted to facilitate sealing of the interior of the housing.

[0011] The utility model is further configured that a rotating handle is fixedly mounted on the surface of the top of the valve stem.

[0012] Adopting the above technical solution: it is easy to rotate the ball valve.

[0013] The utility model is further configured that threads are provided on the surface of the connecting head and the interior of the fixing cover, and the fixing cover is fixed to the connecting head by rotating the threads.

[0014] Adopting the above technical solution: it is easy to install the connecting pipe.

[0015] The utility model is further configured that the surface of the fixing cover is provided with anti-slip grooves.

[0016] The above technical solution is adopted to facilitate increasing the friction force on the surface of the fixed cover.

[0017] The utility model is further configured that the sealing inner ring and the sealing rubber ring are both made of silicone.

[0018] The above technical solution is adopted to facilitate improving the elasticity of the sealing inner ring and the sealing rubber ring.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. The utility model installs a sealing structure inside the valve body. By rotating and installing the ball valve inside the valve body, the rotating handle is swung left and right to drive the internal valve stem to rotate, so that the ball valve at the bottom of the valve stem rotates. The lower sealing gasket and the upper sealing gasket are installed on the top and bottom of the ball valve to seal the upper and lower connections of the ball valve to prevent the fluid from flowing out of the ball valve from the top and bottom, thereby improving the use effect of the device and improving the sealing performance of the device.

[0021] 2. The utility model installs a quick-install valve body structure on both sides of the valve pipe, installs a connecting head on the left side of the valve pipe, and after the connecting pipe is inserted into the connecting head, a sealing rubber ring is used to fix the left side of the connecting head and the surface of the connecting pipe, and the fixing cover is rotated and fixed to the surface of the connecting head for fixing, so that the installation of the device is relatively simple and the practicality of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0024] Figure 3 The utility model is Figure 2 A partial enlarged view of point A in the middle.

[0025] Reference numerals:

[0026] 1. Valve body; 2. Valve tube; 3. Ball valve; 4. Hole groove; 5. Fixed shaft; 6. Valve stem; 7. Fixed block; 8. Packing; 9. Shell; 10. Pressure cover; 11. Turning handle; 12. Valve seat; 13. Lower sealing gasket; 14. Upper sealing gasket; 15. Connector; 16. Fixed cover; 17. Sealing inner ring; 18. Thread; 19. Connecting pipe; 20. Sealing rubber ring; 21. Through groove; 22. Anti-slip pattern. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Embodiment 1:

[0029] refer to Figure 1 , Figure 2A cast steel floating ball valve, valve tubes 2 are fixedly installed on both sides of a valve body 1, a ball valve 3 is rotatably connected inside the valve body 1, a hole groove 4 is opened at the bottom of the valve body 1, a fixed shaft rod 5 is rotatably connected inside the hole groove 4 through a bearing, a valve stem 6 is fixedly installed on the top of the ball valve 3, a fixing block 7 is fixedly installed on the surface of the valve stem 6, valve seats 12 are fixedly installed on both sides of the valve body 1, a lower sealing gasket 13 and an upper sealing gasket 14 are fixedly installed on the bottom and top of the surface of the ball valve 3, the ball valve 3 is rotatably installed inside the valve body 1, and the rotating handle 11 is swung left and right to drive the internal valve stem 6 to rotate, so that the ball valve 3 at the bottom of the valve stem 6 rotates, and a lower sealing gasket 13 and an upper sealing gasket 14 are installed on the top and bottom of the ball valve 3 to seal the upper and lower connections of the ball valve 3 to prevent the fluid from flowing out of the ball valve 3 from the top and bottom, thereby improving the use effect of the device and improving the sealing performance of the device.

[0030] refer to Figure 2 A packing 8 is fixedly installed on the top of the fixed block 7. By setting the packing 8, it is convenient to prevent the internal sealed medium from leaking.

[0031] refer to Figure 1 A shell 9 is fixedly installed on the top of the valve body 1, and a pressure cover 10 is fixedly installed on the top of the shell 9. By setting the pressure cover 10, it is convenient to seal the inside of the shell 9.

[0032] refer to Figure 2 A rotating handle 11 is fixedly mounted on the surface of the top of the valve stem 6 , and the rotating handle 11 is provided to facilitate the rotation of the ball valve 3 .

[0033] refer to Figure 2 Threads 18 are provided on the surface of the connector 15 and inside the fixing cover 16. The fixing cover 16 is fixed to the connector 15 by rotating through the threads 18. The threads 18 are provided to facilitate installation of the connecting pipe 19.

[0034] Brief description of the use process: manually swing the handle 11 left and right to drive the internal valve stem 6 to rotate, so that the ball valve 3 at the bottom of the valve stem 6 rotates, and the lower sealing gasket 13 and the upper sealing gasket 14 are installed on the top and bottom of the ball valve 3 to seal the upper and lower connections of the ball valve 3 to prevent the fluid from flowing out of the ball valve 3 from the top and bottom, thereby improving the use effect of the device and improving the sealing performance of the device.

[0035] Embodiment 2:

[0036] refer to Figure 1 , Figure 2 , Figure 3A cast steel floating ball valve, a connector 15 is fixedly installed on the left side of the valve pipe 2, a fixed cover 16 is rotatably connected to the surface of the connector 15, a sealing inner ring 17 is fixedly installed inside the connector 15, a connecting pipe 19 is rotatably connected inside the connector 15, a sealing rubber ring 20 is fixedly installed on the left side inside the fixed cover 16, a through groove 21 is opened inside the fixed cover 16, the connector 15 is installed on the left side of the valve pipe 2, after the connecting pipe 19 is inserted into the connector 15, the sealing rubber ring 20 is fixed to the left side of the connector 15 and the surface of the connecting pipe 19, the fixed cover 16 is rotated to fix the fixed cover 16 to the surface of the connector 15, so that the installation of the device is relatively simple and the practicality of the device is improved.

[0037] refer to Figure 1 The surface of the fixed cover 16 is provided with anti-skid patterns 22 , and the anti-skid patterns 22 are provided to increase the friction force on the surface of the fixed cover 16 .

[0038] refer to Figure 2 The sealing inner ring 17 and the sealing rubber ring 20 are both made of silicone. By providing silicone, the elasticity of the sealing inner ring 17 and the sealing rubber ring 20 can be improved.

[0039] Brief description of the use process: After the connecting pipe 19 is inserted into the connecting head 15, the sealing rubber ring 20 is fixed to the left side of the connecting head 15 and the surface of the connecting pipe 19, and the fixing cover 16 is rotated and fixed to the surface of the connecting head 15 to fix the fixing cover 16, so that the installation of the device is relatively simple and the practicality of the device is improved.

[0040] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A cast steel floating ball valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly provided with valve tubes (2) on both sides thereof, the valve body (1) is rotatably connected to a ball valve (3) inside thereof, a hole groove (4) is provided at the bottom inside the valve body (1), a fixed shaft rod (5) is rotatably connected to the inside of the hole groove (4) via a bearing, a valve stem (6) is fixedly provided at the top of the ball valve (3), a fixed block (7) is fixedly provided on the surface of the valve stem (6), valve seats (12) are fixedly provided at both sides inside the valve body (1), and the bottom and top surfaces of the ball valve (3) are provided with a plurality of holes (4) on the bottom of the ball valve (3). A lower sealing gasket (13) and an upper sealing gasket (14) are fixedly installed; a connector (15) is fixedly installed on the left side of the valve tube (2); a fixed cover (16) is rotatably connected to the surface of the connector (15); a sealing inner ring (17) is fixedly installed inside the connector (15); a connecting pipe (19) is rotatably connected inside the connector (15); a sealing rubber ring (20) is fixedly installed on the left side inside the fixed cover (16); and a through groove (21) is provided inside the fixed cover (16).

2. A cast steel floating ball valve according to claim 1, characterized in that: A filler (8) is fixedly mounted on the top of the fixed block (7).

3. A cast steel floating ball valve according to claim 1, characterized in that: A housing (9) is fixedly mounted on the top of the valve body (1), and a gland (10) is fixedly mounted on the top of the housing (9).

4. A cast steel floating ball valve according to claim 1, characterized in that: A rotating handle (11) is fixedly mounted on the surface of the top of the valve stem (6).

5. The cast steel floating ball valve according to claim 1, characterized in that: The surface of the connecting head (15) and the interior of the fixing cover (16) are provided with threads (18), and the fixing cover (16) is fixed to the connecting head (15) by rotating through the threads (18).

6. A cast steel floating ball valve according to claim 1, characterized in that: The surface of the fixed cover (16) is provided with anti-slip grooves (22).

7. The cast steel floating ball valve according to claim 1, characterized in that: The sealing inner ring (17) and the sealing rubber ring (20) are both made of silicone.

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