High-reliability corrosion-resistant fluorine-lined floating ball valve

Abstract

The utility model provides a high-reliability corrosion-resistant fluorine-lined floating ball valve which comprises a fluorine-lined valve body provided with a left flow channel, a valve cavity and a right flow channel, a fluorine-lined valve cover is arranged on the fluorine-lined valve body, a ball body is arranged in the valve cavity, a valve rod is arranged on the ball body, a shaft inserting groove is formed in the top face of the valve rod, and a wheel locking clamping hole is formed in the outer side wall of the valve rod. A quick-release hand wheel is arranged at the top of the valve rod and comprises a wheel shaft which is connected with the shaft inserting groove in an inserted mode and internally provided with a shaft groove, guide column sliding holes are formed in the outer side wall of the wheel shaft, a wheel locking clamping column is arranged in each guide column sliding hole in a sliding mode, and a column control assembly for controlling the wheel locking clamping columns to do reciprocating sliding motion along the guide column sliding holes is arranged in the shaft groove. According to the high-reliability corrosion-resistant fluorine-lined floating ball valve, the quick-release hand wheel is arranged on the valve rod, when the quick-release hand wheel is disassembled and assembled, tools such as a wrench are not needed, and disassembling and assembling are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a high-reliability, corrosion-resistant, fluorine-lined floating ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing member (the ball) is driven by a valve stem and rotates around its axis. It can be used to regulate and control fluids. In pipelines, ball valves are primarily used to cut off, distribute, and change the flow direction of media. They can be closed or opened with just a 90-degree rotation and minimal rotational force. The opening and closing member (the ball) of a floating ball valve floats. Under the influence of the media pressure, the ball can produce a certain displacement and press against the sealing surface at the outlet, ensuring the outlet is sealed.

[0003] Fluorine-lined ball valve is a special valve used in pipelines with highly corrosive media. It improves the reliability and corrosion resistance of the ball valve and extends its service life by lining the valve body. The inner layer material of the fluorine-lined ball valve is fluorine material, such as polyvinyl fluoride, polytrifluoroethylene, polytetrafluoroethylene, etc.

[0004] The existing Chinese patent with authorization announcement number CN205978582U discloses a fluorine-lined ball valve, including a valve body and a valve stem. The valve body is provided with a medium flow channel and a valve cavity connected to the medium flow channel. A sphere is provided in the valve cavity, and a connecting channel is provided on the sphere. One end of the valve stem extends into the valve cavity and cooperates with the sphere, and the other end extends outside the valve body. A packing is provided between the valve stem and the valve body, and a pressure cover is pressed on the packing. Fluorine lining is provided on the inner wall of the medium flow channel, the valve cavity, and the outer walls of the valve stem and the sphere.

[0005] The above-mentioned existing technical solution has the following defects: the top of the valve stem of the fluorine-lined ball valve is bolted to a handle, and the handle is used to provide a force point for workers to rotate the valve stem. Since the valve stem and the handle are fixed by bolt connection, when disassembling and replacing the handle, tools such as wrenches are required, which makes disassembly and assembly inconvenient. Utility Model Content

[0006] The problem to be solved by the utility model is to provide a high-reliability corrosion-resistant fluorine-lined floating ball valve in view of the above-mentioned deficiencies in the prior art, which solves the problem of inconvenient assembly and disassembly in the prior art.

[0007] The above-mentioned utility model object of the present utility model is achieved through the following technical solutions: a high-reliability, corrosion-resistant, fluorine-lined floating ball valve, comprising a fluorine-lined valve body with a left flow channel, a valve cavity and a right flow channel, a fluorine-lined valve cover is provided on the fluorine-lined valve body, a sphere is provided in the valve cavity, a valve stem is provided on the sphere, a shaft insertion groove is provided on the top surface of the valve stem, a lock wheel clamping hole is provided on the outer side wall of the valve stem, a quick-release handwheel is provided on the top of the valve stem, the quick-release handwheel comprises a wheel axle which is plugged into the shaft insertion groove and has an shaft groove inside, a guide column sliding hole is provided on the outer side wall of the wheel axle, a lock wheel clamping column is slidably provided in each of the guide column sliding holes, and a control column assembly for controlling the lock wheel clamping column to make reciprocating sliding motion along the guide column sliding hole is provided in the shaft groove.

[0008] The utility model is further configured as follows: a guide rod hole is opened on the bottom surface of the wheel axle, and the control column assembly includes a vertical movable rod movably arranged at the center of the shaft groove and passing through the guide rod hole, a plurality of hinge seats and a hinge rod arranged on the outer side wall of the vertical movable rod, one end of the hinge rod is hinged to the lock wheel clamp column, and the other end is hinged to the hinge seat, and the hinge point of the hinge rod and the lock wheel clamp column is higher than the hinge point of the hinge rod and the hinge seat.

[0009] The utility model is further configured as follows: a locking sliding disk that is slidably matched with the shaft groove is provided on the outer side wall of the vertical movable rod.

[0010] The utility model is further configured as follows: a lock disk hole connected to the shaft groove is provided on the outer side wall of the wheel axle, the lock disk hole is located on the side of the lock wheel clamping hole away from the guide rod hole, a guide block groove is provided on the outer side wall of the locking slide plate, a lock disk clamping block is slidably provided in the guide block groove, a lock disk spring is provided in the guide block groove, one end of the lock disk spring is connected to the lock disk clamping block, and the other end is connected to the bottom wall of the guide block groove.

[0011] The utility model is further configured as follows: a return spring partially sleeved on the vertical moving rod is provided between the end surface of the locking sliding disk away from the guide rod hole and the groove wall of the shaft groove away from the guide rod hole.

[0012] The utility model is further configured as follows: the quick-release handwheel further comprises a plurality of spokes arranged on the outer side wall of the wheel shaft, a rim arranged on the top of the spokes, and a handle arranged on the rim.

[0013] The utility model is further configured as follows: a packing groove and a lower rod hole are sequentially opened on the top surface of the fluorine-lined valve cover from top to bottom, the lower rod hole is for the valve stem to pass through, and a plurality of sealing packings sleeved on the valve stem are stacked in the packing groove.

[0014] The utility model is further configured as follows: a pressure cover is provided on the top surface of the fluorine-lined valve cover, the bottom of the pressure cover is plugged into the stuffing groove, the bottom surface of the pressure cover is against the sealing stuffing, and an upper rod hole for the valve stem to pass through is opened at the center of the pressure cover.

[0015] In summary, the beneficial technical effects of the present invention are as follows: the high-reliability corrosion-resistant fluorine-lined floating ball valve is provided with a quick-release handwheel on the valve stem, and when the quick-release handwheel is disassembled and assembled, no tools such as wrenches are required, making disassembly and assembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional structural diagram of the utility model's high-reliability corrosion-resistant fluorine-lined floating ball valve;

[0017] Figure 2 It is a partial cross-sectional structural diagram of the utility model's high-reliability corrosion-resistant fluorine-lined floating ball valve.

[0018] In the above drawings: 1. Fluorine-lined valve body; 2. Fluorine-lined valve cover; 3. Left flow channel; 4. Valve chamber; 5. Right flow channel; 6. Valve seat; 7. Sphere; 8. Valve stem; 9. Stuffing groove; 10. Lower rod hole; 11. Sealing stuffing; 12. Pressing cover; 13. Upper rod hole; 14. Insert shaft groove; 15. Lock wheel clamp hole; 16. Quick-release handwheel; 17. Axle; 18. Spoke; 19. Rim; 20. Handle; 21. Shaft groove; 22. Guide rod hole; 23. Guide column slide hole; 24. Lock wheel clamp column; 25. Vertical rod; 26. Articulated seat; 27. Articulated rod; 28. Lock slide disk; 29. ​​Return spring; 30. Lock disk hole; 31. Guide block groove; 32. Lock disk clamp block; 33. Lock disk spring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further explained below with reference to the accompanying drawings and specific implementation methods.

[0020] like Figure 1 As shown, the utility model proposes a high-reliability corrosion-resistant fluorine-lined floating ball valve, comprising a fluorine-lined valve body 1 and a fluorine-lined valve cover 2 bolted to the fluorine-lined valve body 1. The fluorine-lined valve body 1 and the fluorine-lined valve cover 2 are both lined with an inner layer formed of polytetrafluoroethylene. Therefore, the high-reliability corrosion-resistant fluorine-lined floating ball valve has the advantage of corrosion resistance.

[0021] like Figure 1As shown, the fluorine-lined valve body 1 includes a left valve body and a right valve body connected by bolts. The fluorine-lined valve body 1 has a left flow channel 3, a valve cavity 4, and a right flow channel 5 that are connected in sequence. Valve seats 6 are provided on both ends of the valve cavity 4. A ball 7 is rotatably provided in the valve cavity 4. The ball 7 forms a dynamic seal with the two valve seats 6. The middle part of the ball 7 is hollow. When the hollow part of the ball 7 is aligned with the left flow channel 3 and the right flow channel 5, this high-reliability, corrosion-resistant fluorine-lined floating ball valve is in an open state. A valve stem 8 is provided on the ball 7.

[0022] like Figure 1 As shown, the fluorine-lined valve cover 2 is T-shaped. A packing groove 9 and a lower rod hole 10 are defined on the top surface of the fluorine-lined valve cover 2, sequentially from top to bottom. The valve stem 8 passes through the lower rod hole 10 and the packing groove 9, and the valve stem 8 rotates in conjunction with the lower rod hole 10. In this embodiment, three sealing packings 11 are stacked in the packing groove 9, and all three sealing packings 11 are sleeved onto the valve stem 8.

[0023] like Figure 1 As shown, a pressure cover 12 is screwed to the top surface of the fluorine-lined valve cover 2. The pressure cover 12 is T-shaped. The bottom of the pressure cover 12 is plugged into the stuffing groove 9, and the bottom surface of the pressure cover 12 is against the sealing packing 11. The pressure cover 12 presses and fixes the sealing packing 11 in the stuffing groove 9. An upper rod hole 13 for the valve stem 8 to pass through is opened at the center of the pressure cover 12.

[0024] like Figure 1 and 2 As shown, a shaft slot 14 is provided on the top surface of the valve stem 8, and the cross section of the shaft slot 14 is circular. Four locking wheel holes 15 are provided on the outer wall of the valve stem 8 at equal distances from the circumference. The four locking wheel holes 15 are all connected to the shaft slot 2114, and the locking wheel holes 15 are circular holes.

[0025] like Figure 1 and 2 As shown, a quick-release handwheel 16 is provided on the top of the valve stem 8. The quick-release handwheel 16 includes an axle 17 that is plugged into the shaft slot 14. A plurality of spokes 18 are equidistantly arranged on the outer wall of the axle 17. A rim 19 is fixedly connected to the top of the plurality of spokes 18, and a handle 20 is fixedly connected to the rim 19.

[0026] like Figure 2 As shown, the wheel axle 17 is provided with an axis groove 21, and the cross section of the axis groove 21 is circular. A guide rod hole 22 is provided on the bottom surface of the wheel axle 17. The guide rod hole 22 is a circular hole and is connected to the axis groove 21. Four guide post sliding holes 23 are provided on the outer wall of the wheel axle 17 at equal intervals around the circumference. The guide post sliding holes 23 are circular holes and are all connected to the wheel groove. The four guide post sliding holes 23 can be aligned with the four locking wheel clamping holes 15 respectively. A cylindrical locking wheel clamping column 24 is slidably provided in each guide post sliding hole 23.

[0027] like Figure 2 As shown, a control column assembly is provided in the shaft groove 21 , and the control column assembly is used to control the lock wheel clamping column 24 to perform reciprocating sliding motion along the guide column sliding hole 23 . The control column assembly includes a vertical rod 25 , an articulated seat 26 , and an articulated rod 27 .

[0028] The vertical moving rod 25 is cylindrical and is movably arranged at the center of the shaft groove 21. The bottom of the vertical moving rod 25 extends out of the shaft groove 21 through the guide rod hole 22. The vertical moving rod 25 slides with the guide rod hole 22, and the bottom surface of the vertical moving rod 25 can be against the bottom wall of the shaft slot 14.

[0029] In this embodiment, there are four hinge seats 26 , which are equidistantly arranged on the outer wall of the vertical rod 25 . The four hinge seats 26 are respectively arranged corresponding to the four wheel locking columns 24 .

[0030] A hinged rod 27 is arranged between the hinged seat 26 and the wheel locking column 24. One end of the hinged rod 27 is hinged to the wheel locking column 24, and the other end is hinged to the hinged seat 26. In the initial state, the hinge point of the hinged rod 27 and the wheel locking column 24 is higher than the hinge point of the hinged rod 27 and the hinged seat 26.

[0031] like Figure 2 As shown, a locking slide plate 28 is fixedly connected to the middle of the vertical moving rod 25 , and the locking slide plate 28 is slidably matched with the shaft groove 21 , so that the vertical moving rod 25 can move vertically more stably.

[0032] like Figure 2 As shown, a return spring 29 is disposed between the end surface of the locking slide 28 facing away from the guide rod hole 22 and the wall of the shaft groove 21 away from the guide rod hole 22. The return spring 29 is partially sleeved on the vertical rod 25. When the locking slide 28 moves away from the guide rod hole 22, the return spring 29 is compressed. When the locking slide 28 is released from the movement restriction, the locking slide 28 moves toward the guide rod hole 22 under the return action of the return spring 29.

[0033] like Figure 2 As shown, a lock plate hole 30 communicating with the shaft groove 21 is opened on the outer side wall of the wheel shaft 17. The lock plate hole 30 is located on the side of the lock wheel clamping hole 15 away from the guide rod hole 22. The lock plate hole 30 is a circular hole.

[0034] like Figure 2As shown, a guide block groove 31 is formed on the outer wall of the locking slide 28. The cross section of the guide block groove 31 is circular and can be aligned with the locking disk hole 30. A locking disk block 32 is slidably disposed in the guide block groove 31. The locking disk block 32 is in the shape of a bullet head. A locking disk spring 33 is disposed between the locking disk block 32 and the bottom wall of the guide block groove 31. One end of the locking disk spring 33 is glued to the locking disk block 32, and the other end is glued to the bottom wall of the guide block groove 31. The locking disk spring 33 is used to push the locking disk block 32 into the locking disk hole 30, thereby restricting the movement of the vertical rod 25.

[0035] The detailed installation process of the quick-release handwheel 16 in this embodiment is as follows: the worker inserts the wheel axle 17 into the shaft slot 14 of the valve stem 8 until the four lock wheel clamping holes 15 and the four guide post sliding holes 23 are aligned. During this process, since the bottom surface of the vertical rod 25 abuts against the bottom wall of the shaft slot 14, the vertical rod 25 and the locking slide plate 28 are pushed to move away from the guide rod hole 22, and then the hinged rod 27 pushes the lock wheel clamping column 24 along the guide post sliding hole 23 to move away from the vertical rod 25 until the lock wheel clamping column 24 is inserted into the lock wheel clamping hole 15. At the same time, the locking slide plate 28 is pushed to move away from the guide rod hole 22 until the guide block groove 31 is aligned with the lock plate hole 30, and the lock plate spring 33 pushes the lock plate clamping block 32 to insert the lock plate hole 30. At this time, the vertical rod 25 is restricted from moving, and the valve stem 8 and the quick-release handwheel 16 can be stably maintained in a connected state.

[0036] The high-reliability, corrosion-resistant, fluorine-lined floating ball valve is provided with a quick-release hand wheel 16 on the valve stem 8. When the quick-release hand wheel 16 is disassembled and assembled, no tools such as a wrench are required, and the disassembly and assembly is relatively convenient.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high-reliability, corrosion-resistant, fluorine-lined floating ball valve, comprising a fluorine-lined valve body (1) having a left flow channel (3), a valve cavity (4), and a right flow channel (5); a fluorine-lined valve cover (2) is provided on the fluorine-lined valve body (1); a ball (7) is provided in the valve cavity (4); and a valve stem (8) is provided on the ball (7), characterized in that: The top surface of the valve stem (8) is provided with an inserting shaft groove (14), the outer side wall of the valve stem (8) is provided with a locking wheel clamping hole (15), the top of the valve stem (8) is provided with a quick-release hand wheel (16), the quick-release hand wheel (16) includes a wheel shaft (17) which is plugged into the inserting shaft groove (14) and has an internal shaft groove (21), the outer side wall of the wheel shaft (17) is provided with a guide column sliding hole (23), each of the guide column sliding holes (23) is provided with a locking wheel clamping column (24) which is slidably provided, and the shaft groove (21) is provided with a control column assembly for controlling the locking wheel clamping column (24) to make a reciprocating sliding motion along the guide column sliding hole (23).

2. A high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 1, characterized in that: A guide rod hole (22) is provided on the bottom surface of the wheel shaft (17). The control column assembly comprises a vertical movable rod (25) movably arranged at the center of the shaft groove (21) and passing through the guide rod hole (22), a plurality of hinge seats (26) arranged on the outer side wall of the vertical movable rod (25), and a hinge rod (27). One end of the hinge rod (27) is hinged to the wheel locking column (24), and the other end is hinged to the hinge seat (26). The hinge point of the hinge rod (27) and the wheel locking column (24) is higher than the hinge point of the hinge rod (27) and the hinge seat (26).

3. A high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 2, characterized in that: A locking sliding disc (28) that is slidably matched with the shaft groove (21) is provided on the outer side wall of the vertical moving rod (25).

4. A high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 3, characterized in that: A lock plate hole (30) communicating with the shaft groove (21) is provided on the outer wall of the wheel shaft (17), and the lock plate hole (30) is located on the side of the lock wheel clamping hole (15) away from the guide rod hole (22). A guide block groove (31) is provided on the outer wall of the locking slide plate (28), and a lock plate clamping block (32) is slidably provided in the guide block groove (31). A lock plate spring (33) is provided in the guide block groove (31), and one end of the lock plate spring (33) is connected to the lock plate clamping block (32), and the other end is connected to the bottom wall of the guide block groove (31).

5. The high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 3, characterized in that: A return spring (29) partially sleeved on the vertical rod (25) is provided between the end surface of the locking slide plate (28) away from the guide rod hole (22) and the groove wall of the shaft groove (21) away from the guide rod hole (22).

6. The high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 1, characterized in that: The quick-release hand wheel (16) further comprises a plurality of spokes (18) arranged on the outer side wall of the wheel axle (17), a rim (19) arranged on the top of the spokes (18), and a handle (20) arranged on the rim (19).

7. The high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 1, characterized in that: A packing groove (9) and a lower rod hole (10) are sequentially provided on the top surface of the fluorine-lined valve cover (2) from top to bottom. The lower rod hole (10) is for the valve stem (8) to pass through. A plurality of sealing packings (11) sleeved on the valve stem (8) are stacked in the packing groove (9).

8. The high-reliability, corrosion-resistant, fluorine-lined floating ball valve according to claim 7, characterized in that: A pressure cover (12) is provided on the top surface of the fluorine-lined valve cover (2), the bottom of the pressure cover (12) is plugged into the packing groove (9), the bottom surface of the pressure cover (12) is against the sealing packing (11), and an upper rod hole (13) for the valve stem (8) to pass through is opened through the center of the pressure cover (12).

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