Corrosion-resistant pneumatic rubber-lined angle stop valve

Abstract

The corrosion-resistant pneumatic rubber-lined angle stop valve comprises a valve body, a first flange and a second flange, a valve cover is arranged at one end of the upper portion of the valve body, a control rod used for controlling the valve to be closed is arranged at one end of the interior of the valve cover, and a hand wheel is arranged at one end of the side face of the control rod; a valve clack used for closing the valve is arranged at one end of the lower portion of the control rod, and a sealing mechanism used for increasing sealing of the valve when the valve is closed is arranged at one end of the interior of the valve body. Through the sealing mechanism and the like, after the valve clack closes the valve, air in the piston can be input into the inflation ring through the piston assembly to enable the inflation ring to expand, so that the inflation ring is clamped into a groove in the side face of the valve clack better, the inflation ring is attached better, the sealing performance of the valve clack is improved, the valve body and the valve clack are made of stainless steel corrosion-resistant materials, and the service life of the valve clack is prolonged. The check valve can be prevented from being corroded when some corrosive substances are conveyed or the outside of the check valve is in contact with the corrosive substances, and normal operation of the check valve is prevented from being affected by corrosion.

Description

Technical Field

[0001] The invention relates to the technical field of check valve equipment, in particular to a corrosion-resistant pneumatic rubber-lined angle stop valve. Background Art

[0002] Because a general check valve may only rely on a single valve disc to close the valve for sealing when in use, but there may be a certain gap between the valve disc and the valve body, which may cause certain leakage, and when some corrosive substances are transported in the pipeline or the valve body contacts some corrosive substances, the valve body may be damaged and affect its normal operation, so further improvement is needed. Summary of the invention

[0003] The purpose of the present invention is to provide a corrosion-resistant pneumatic rubber-lined angle stop valve to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrosion-resistant pneumatic rubber-lined angle stop valve, comprising: a valve body, a first flange and a second flange, a valve cover is arranged at one end above the valve body, a control rod for controlling the closing of the valve is arranged at one end inside the valve cover, a hand wheel is arranged at one end on the side of the control rod, a valve disc for closing the valve is arranged at one end below the control rod, and a sealing mechanism is arranged at one end inside the valve body for increasing the sealing of the valve when it is closed.

[0005] As a further solution of the present invention: the sealing mechanism includes a connecting seat arranged at one end inside the valve body, a fixing rod is fixedly connected to the upper end of the connecting seat, a rotating arm is rotatably connected to one end of the side of the connecting seat, a connecting block is rotatably connected to one end of the side of the rotating arm, a piston assembly is fixedly connected to one end of the side of the connecting block, a piston cylinder is arranged at one end of the side of the piston assembly, an inflation ring is arranged at one end of the side of the piston cylinder, and the piston cylinder and the piston assembly are prior art.

[0006] As a further solution of the present invention: the valve flap includes a valve flap body fixedly connected below the control rod, and a groove matched with the sealing mechanism is formed at one end of the side surface of the valve flap body.

[0007] As a further solution of the present invention: the inflation ring is made of rubber material and is hollow. The inflation ring can be deformed by inflating air inside, and the piston assembly is compatible with the piston cylinder.

[0008] As a further solution of the present invention: the rotating arm, the connecting block, the piston assembly and the piston cylinder are each provided in four groups, which are symmetrically arranged at the four ends of the side surface of the inflation ring.

[0009] As a further solution of the present invention: a cavity for accommodating the sealing mechanism is opened at one end inside the valve body.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In the present invention, after the valve disc closes the valve, the air in the piston can be input into the inflation ring through the piston assembly to expand it, so that it is more tightly stuck in the groove on the side of the valve disc, making it fit more tightly, thereby increasing the sealing performance of the valve disc. The valve body and valve disc are made of corrosion-resistant stainless steel, which can prevent the check valve from being corroded when conveying some corrosive substances or contacting corrosive substances from the outside, thereby preventing the normal operation of the check valve from being affected by corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the internal structure of the valve body in the present invention;

[0014] Figure 3 It is a schematic diagram of the internal structure of the valve body in the second state of the present invention;

[0015] Figure 4 It is a structural schematic diagram of the sealing mechanism in the present invention.

[0016] In the figure: 1. valve body; 2. first flange; 3. second flange; 4. valve cover; 5. control rod; 6. hand wheel; 7. valve disc; 71. valve disc body; 72. groove; 8. sealing mechanism; 81. connecting seat; 82. fixing rod; 83. rotating arm; 84. connecting block; 85. piston assembly; 86. piston cylinder; 87. inflation ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0019] Reference Figures 1 to 4 In the embodiment of the present invention, the corrosion-resistant pneumatic rubber-lined angle stop valve comprises: a valve body 1, a first flange 2 and a second flange 3, a valve cover 4 is arranged at one end above the valve body 1, a control rod 5 for controlling the closing of the valve is arranged at one end inside the valve cover 4, a hand wheel 6 is arranged at one end of the side of the control rod 5, a valve disc 7 for closing the valve is arranged at one end below the control rod 5, and a sealing mechanism 8 for increasing the sealing of the valve when the valve is closed is arranged at one end inside the valve body 1.

[0020] The sealing mechanism 8 includes a connecting seat 81 arranged at one end inside the valve body 1, a fixing rod 82 is fixedly connected to one end above the connecting seat 81, a rotating arm 83 is rotatably connected to one end of the side of the connecting seat 81, a connecting block 84 is rotatably connected to one end of the side of the rotating arm 83, a piston assembly 85 is fixedly connected to one end of the side of the connecting block 84, a piston cylinder 86 is arranged at one end of the side of the piston assembly 85, and an inflation ring 87 is arranged at one end of the side of the piston cylinder 86.

[0021] The valve flap 7 includes a valve flap body 71 fixedly connected to the lower side of the control rod 5 , and a groove 72 adapted to the sealing mechanism 8 is formed at one end of the side of the valve flap body 71 .

[0022] The above scheme is adopted: when the valve disc 7 moves downward to close the valve, the fixing rod 82 is squeezed downward by the valve disc 7, thereby driving the connecting seat 81 to move downward. When the connecting seat 81 moves downward, it drives the rotating arm 83 of the side rotating connection to rotate, thereby driving the connecting block 84 of the side rotating connection to drive the piston assembly 85 to move toward the piston cylinder 86, thereby squeezing the air inside the piston cylinder 86 and filling it into the inflatable ring 87. The inflatable ring 87 expands after inflation. When the valve disc 7 moves to the closed position, the inflatable ring 87 will be deformed by expansion, causing it to enter the groove 72, so that the inflatable ring 87 and the valve disc 7 fit more tightly, thereby achieving better sealing.

[0023] The inflation ring 87 is made of rubber and is hollow. The piston assembly 85 is matched with the piston cylinder 86 .

[0024] There are four sets of rotating arms 83 , connecting blocks 84 , piston assemblies 85 and piston cylinders 86 , which are symmetrically arranged at the four ends of the side surfaces of the inflation ring 87 .

[0025] A cavity for accommodating a sealing mechanism 8 is formed at one end of the valve body 1 .

[0026] With the above solution, the valve body 1 and the valve flap 7 are made of corrosion-resistant stainless steel, thereby preventing some substances from damaging the valve body 1 and preventing corrosive substances from affecting the normal operation of the device.

[0027] The working principle of the present invention is: when the valve disc 7 moves downward to close the valve, the fixing rod 82 is squeezed downward by the valve disc 7, thereby driving the connecting seat 81 to move downward. When the connecting seat 81 moves downward, it drives the rotating arm 83 of the side rotating connection to rotate, thereby driving the connecting block 84 of the side rotating connection to drive the piston assembly 85 to move toward the piston cylinder 86, thereby squeezing the air inside the piston cylinder 86 to fill it into the inflation ring 87. The inflation ring 87 expands after inflation. When the valve disc 7 moves to the closed position, the inflation ring 87 will be deformed by expansion, so that it enters the groove 72, so that the inflation ring 87 and the valve disc 7 fit more tightly, thereby achieving better sealing. The valve body 1 and the valve disc 7 are made of corrosion-resistant stainless steel, so that some substances can be prevented from damaging the valve body 1.

[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Corrosion-resistant pneumatic rubber-lined angle stop valve, including: A valve body (1), a first flange (2) and a second flange (3), characterized in that a valve cover (4) is arranged at one end above the valve body (1), a control rod (5) for controlling the closing of the valve is arranged at one end inside the valve cover (4), a hand wheel (6) is arranged at one end of the side of the control rod (5), a valve flap (7) for closing the valve is arranged at one end below the control rod (5), and a sealing mechanism (8) for increasing the sealing of the valve when the valve is closed is arranged at one end inside the valve body (1).

2. The corrosion-resistant pneumatic rubber-lined angle stop valve according to claim 1 is characterized in that: The sealing mechanism (8) comprises a connecting seat (81) arranged at one end inside the valve body (1), a fixing rod (82) is fixedly connected to the upper end of the connecting seat (81), a rotating arm (83) is rotatably connected to one end of the side of the connecting seat (81), a connecting block (84) is rotatably connected to one end of the side of the rotating arm (83), a piston assembly (85) is fixedly connected to one end of the side of the connecting block (84), a piston cylinder (86) is arranged at one end of the side of the piston assembly (85), and an inflation ring (87) is arranged at one end of the side of the piston cylinder (86).

3. The corrosion-resistant pneumatic rubber-lined angle stop valve according to claim 1 is characterized in that: The valve flap (7) comprises a valve flap body (71) fixedly connected below the control rod (5), and a groove (72) adapted to the sealing mechanism (8) is provided at one end of a side surface of the valve flap body (71).

4. The corrosion-resistant pneumatic rubber-lined angle stop valve according to claim 2 is characterized in that: The inflation ring (87) is made of rubber and is hollow. The piston assembly (85) is compatible with the piston cylinder (86).

5. The corrosion-resistant pneumatic rubber-lined angle stop valve according to claim 2 is characterized in that: The rotating arm (83), the connecting block (84), the piston assembly (85) and the piston cylinder (86) are each provided in four groups, and are symmetrically arranged at the four ends of the side of the inflation ring (87).

6. The corrosion-resistant pneumatic rubber-lined angle stop valve according to claim 1 is characterized in that: A cavity for accommodating the sealing mechanism (8) is provided at one end of the interior of the valve body (1).

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