Nickel butterfly valve

Abstract

The nickel butterfly valve comprises a valve body, a valve plate, a valve seat and a valve rod, the valve plate is arranged on the valve rod and rotates along with the valve rod, the valve seat is arranged in the valve body and has a sealing state matched with the valve plate in a sealing mode, the nickel butterfly valve comprises a sealing ring, a pressing plate and a fixing piece, and a pressing groove is formed in the side, relatively close to the valve seat, of the valve plate and extends to the side portion of the valve plate. A middle groove is formed in the pressing groove and extends to the side portion of the valve plate, the sealing ring is arranged in the middle groove and is opposite to the valve seat, the pressing plate is arranged in the pressing groove and presses and fixes the sealing ring, and the pressing plate is fixed to the valve plate through the fixing piece. The utility model provides a nickel butterfly valve.

Description

Technical Field

[0001] The utility model relates to a butterfly valve, in particular to a nickel butterfly valve. Background Art

[0002] The butterfly valve is a valve that opens and closes by rotating the valve stem and driving the valve plate to rotate. In the channel of the butterfly valve body, the valve plate rotates around the axis. When the butterfly valve is fully opened, it has a small flow resistance. When it is opened between about 15° and 70°, it can also perform sensitive flow control. Therefore, in the field of large-caliber regulation, the butterfly valve has become one of the fastest-growing valve varieties in the past decade due to its good flow regulation function and closing and sealing characteristics. The scope of use is very wide. Moreover, the variety and quantity of butterfly valves used are still expanding, and they are developing in the direction of high temperature, high pressure, large diameter, high sealing, long life, convenient adjustment, and one valve with multiple functions.

[0003] At present, after a long period of use, both the sealing ring on the valve plate and the valve seat of the butterfly valve will be damaged, affecting the sealing performance of the butterfly valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a nickel butterfly valve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a valve body, a valve plate, a valve seat and a valve stem, the valve plate is arranged on the valve stem and rotates with the valve stem, the valve seat is arranged in the valve body and has a sealing state that cooperates with the valve plate in sealing, including a sealing ring, a pressure plate and a fixing part, a pressure groove is arranged on the side of the valve plate relatively close to the valve seat and the pressure groove extends to the side of the valve plate, an intermediate groove is arranged in the pressure groove and the intermediate groove extends to the side of the valve plate, the sealing ring is arranged in the intermediate groove and opposite to the valve seat, the pressure plate is arranged in the pressure groove and presses and fixes the sealing ring, and the fixing part fixes the pressure plate to the valve plate.

[0006] By adopting the above technical solution, when the sealing ring needs to be replaced after a long period of use, the valve plate is first removed from the valve stem, and then the fixing part is rotated to turn the fixing part out. At this time, the pressure plate can be removed, and then the sealing ring is taken out for replacement. After the replacement is completed, the new sealing ring is put back into the middle groove, the pressure plate is put into the pressure groove and pressed against the sealing ring so that the sealing ring is fixed, the fixing part is screwed in again to complete the fixation, and finally the valve plate is installed back on the valve stem and continued to be used. By replacing the sealing ring, the service life of the valve is effectively extended, and at the same time, it is ensured that the sealing performance will not be affected by long-term use.

[0007] The utility model is further configured as follows: a fixing groove is arranged in the pressure groove and the fixing groove is not connected to the middle groove; a fixing hole for a fixing member to pass through is arranged on the pressure plate and the fixing hole is opposite to the fixing groove; the fixing member passes through the fixing hole and partially enters the fixing groove to fix the pressure plate and the valve plate.

[0008] By adopting the above technical solution, the pressing plate is fixed by the fixing member, and the operation is convenient.

[0009] The utility model is further configured as follows: it includes a fixing pin, the valve plate has a ring sleeved on the valve stem, the ring is provided with an assembly hole for the fixing pin to pass through and extends to the valve plate, the valve stem is provided with a matching through hole opposite to the assembly hole, the fixing pin passes through the assembly hole and the matching through hole to fix the valve plate and the valve stem.

[0010] By adopting the above technical solution, when the valve plate needs to be removed from the valve stem, the fixing pin is removed first, and then the valve plate can be removed from the valve stem.

[0011] The utility model is further configured as follows: it includes a pressure block and a pressing piece, an L-shaped groove opposite to the sealing ring is provided on the valve body, the valve seat is arranged in the L-shaped groove and abuts against the pressure block, and the pressing piece fixes the pressure block to the valve body and constitutes the fixation of the valve seat and the valve body.

[0012] By adopting the above technical solution, after the valve seat is worn, the valve seat can be replaced to maintain the sealing performance.

[0013] The utility model is further configured as follows: the valve seat is provided with a locking groove, the pressing block is provided with a locking portion opposite to the locking groove, and the locking portion is adapted to the locking groove in shape and size.

[0014] The utility model is further configured as follows: the valve body and the valve seat are made of nickel metal

[0015] The utility model is further configured as follows: the fixing member and the pressing member are screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A partial enlarged view of middle A;

[0018] Figure 3 For this utility model Figure 1 A partial enlarged view of B.

[0019] In the figure: 1. valve body; 11. pressure groove; 12. middle groove; 13. fixing groove; 14. fixing hole; 2. valve plate; 21. collar; 3. valve seat; 4. valve stem; 5. sealing ring; 6. pressure plate; 7. fixing piece; 8. fixing pin; 81. assembly hole; 82. matching through hole; 9. pressure block; 91. pressing piece; 92. L-shaped groove; 93. locking groove; 94. locking part. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] like Figure 1-3 As shown, the utility model discloses a nickel butterfly valve, including a valve body 1, a valve plate 2, a valve seat 3 and a valve stem 4, the valve plate 2 is arranged on the valve stem 4 and rotates with the valve stem 4, the valve seat 3 is arranged in the valve body 1 and has a sealing state of sealing with the valve plate 2, including a sealing ring 5, a pressing plate 6 and a fixing member 7, a pressure groove 11 is arranged on the side of the valve plate 2 relatively close to the valve seat 3, and the pressure groove 11 extends to the side of the valve plate 2, an intermediate groove 12 is arranged in the pressure groove 11, and the intermediate groove 12 extends to the side of the valve plate 2, the sealing ring 5 is arranged in the intermediate groove 12 and is opposite to the valve seat 3, the pressing plate 6 is arranged in the pressure groove 11 and presses and fixes the sealing ring 5, and the fixing member 7 fixes the pressing plate 6 is fixed to the valve plate 2. After a long period of use, the sealing ring 5 needs to be replaced. First, the valve plate 2 is removed from the valve stem 4, and then the fixing piece 7 is rotated to turn the fixing piece 7 out. At this time, the pressure plate 6 can be removed, and then the sealing ring 5 can be taken out for replacement. After the replacement is completed, the new sealing ring 5 is put back into the middle groove 12, the pressure plate 6 is put into the pressing groove 11 and pressed against the sealing ring 5, so that the sealing ring 5 is fixed, the fixing piece 7 is screwed in again, and the fixation is completed. Finally, the valve plate 2 is installed back on the valve stem 4 and continued to be used. By replacing the sealing ring 5, the service life of the valve is effectively extended, and at the same time, it is ensured that the sealing performance will not be affected by long-term use.

[0023] A fixing groove 13 is provided in the pressure groove 11 and the fixing groove 13 is not connected to the middle groove 12. A fixing hole 14 for the fixing member 7 to pass through is provided on the pressure plate 6 and the fixing hole 14 is opposite to the fixing groove 13. The fixing member 7 passes through the fixing hole 14 and partially enters the fixing groove 13 to fix the pressure plate 6 and the valve plate 2. The pressure plate 6 is fixed by the fixing member 7 and the operation is convenient.

[0024] Including a fixing pin 8, the valve plate 2 has a ring 21 sleeved on the valve stem 4, the ring 21 is provided with an assembly hole 81 for the fixing pin 8 to pass through and extends to the valve plate 2, and the valve stem 4 is provided with a matching through hole 82 opposite to the assembly hole 81. The fixing pin 8 passes through the assembly hole 81 and the matching through hole 82 to fix the valve plate 2 and the valve stem 4. When the valve plate 2 needs to be removed from the valve stem 4, the fixing pin 8 is removed first, and then the valve plate 2 can be removed from the valve plate 2.

[0025] It includes a pressure block 9 and a pressing piece 91. An L-shaped groove 92 opposite to the sealing ring 5 is provided on the valve body 1. The valve seat 3 is arranged in the L-shaped groove 92 and abuts against the pressure block 9. The pressing piece 91 fixes the pressure block 9 to the valve body 1 and constitutes the fixation of the valve seat 3 and the valve body 1. After the valve seat 3 is worn, the valve seat 3 can be replaced to maintain the sealing performance.

[0026] The valve seat 3 is provided with a locking groove 93 , the pressing block 9 is provided with a locking portion 94 opposite to the locking groove 93 , and the locking portion 94 and the locking groove 93 are adapted in shape and size, and the fixing member 7 and the pressing member 91 are screws.

[0027] In the present invention, both the valve body and the valve seat are made of nickel metal because of its corrosion resistance and long service life.

[0028] Working principle: when the sealing ring 5 needs to be replaced after a long period of use, first remove the valve plate 2 from the valve stem 4, and then rotate the fixing part 7 to turn the fixing part 7 out. At this time, the pressure plate 6 can be removed, and then the sealing ring 5 can be taken out for replacement. After the replacement is completed, the new sealing ring 5 is put back into the middle groove 12, the pressure plate 6 is put into the pressure groove 11 and pressed against the sealing ring 5, so that the sealing ring 5 is fixed, the fixing part 7 is screwed back in to complete the fixation, and finally the valve plate 2 is installed back on the valve stem 4 for continued use.

Claims

1. A nickel butterfly valve, comprising a valve body (1), a valve plate (2), a valve seat (3) and a valve stem (4), wherein the valve plate (2) is arranged on the valve stem (4) and rotates with the valve stem (4), and the valve seat (3) is arranged in the valve body (1) and has a sealing state with the valve plate (2), characterized in that: The valve plate (2) comprises a sealing ring (5), a pressure plate (6) and a fixing member (7); a pressure groove (11) is provided on a side of the valve plate (2) relatively close to the valve seat (3), and the pressure groove (11) extends to the side of the valve plate (2); an intermediate groove (12) is provided in the pressure groove (11), and the intermediate groove (12) extends to the side of the valve plate (2); the sealing ring (5) is arranged in the intermediate groove (12) and is opposite to the valve seat (3); the pressure plate (6) is arranged in the pressure groove (11) and presses and fixes the sealing ring (5); and the fixing member (7) fixes the pressure plate (6) to the valve plate (2).

2. A nickel butterfly valve according to claim 1, characterized in that: A fixing groove (13) is arranged in the pressing groove (11), and the fixing groove (13) is not connected to the middle groove (12); a fixing hole (14) for the fixing member (7) to pass through is arranged on the pressing plate (6), and the fixing hole (14) is opposite to the fixing groove (13); the fixing member (7) passes through the fixing hole (14) and partially enters the fixing groove (13) to fix the pressing plate (6) and the valve plate (2).

3. A nickel butterfly valve according to claim 2, characterized in that: The invention comprises a fixing pin (8), a valve plate (2) having a sleeve (21) sleeved on a valve stem (4), the sleeve (21) being provided with an assembly hole (81) for the fixing pin (8) to pass through and extending to the valve plate (2), a matching through hole (82) opposite to the assembly hole (81) being provided on the valve stem (4), and the fixing pin (8) passing through the assembly hole (81) and the matching through hole (82) to fix the valve plate (2) and the valve stem (4).

4. A nickel butterfly valve according to claim 1, characterized in that: The valve body (1) comprises a pressure block (9) and a pressing member (91); an L-shaped groove (92) opposite to the sealing ring (5) is provided on the valve body (1); the valve seat (3) is arranged in the L-shaped groove (92) and abuts against the pressure block (9); the pressing member (91) fixes the pressure block (9) to the valve body (1) and forms a fixing between the valve seat (3) and the valve body (1).

5. A nickel butterfly valve according to claim 1, characterized in that: The valve seat (3) is provided with a locking groove (93), and the pressure block (9) is provided with a locking portion (94) opposite to the locking groove (93), and the locking portion (94) and the locking groove (93) are adapted in shape and size.

6. A nickel butterfly valve according to claim 1, characterized in that: The fixing member (7) and the pressing member (91) are screws.

7. A nickel butterfly valve according to claim 1, characterized in that: The valve body (1) and the valve seat (3) are both made of nickel metal.

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