Anti-corrosion safety valve

Abstract

The utility model relates to the field of safety valves, in particular to an anti-corrosion safety valve which comprises a safety valve body, the safety valve body comprises a main pipe and a pressure relief pipe, a pressure relief opening is formed in the side wall of the pressure relief pipe, a chromium-plated valve element is in threaded connection with the joint of the main pipe and the pressure relief pipe, and a first silica gel gasket is slidably connected into the pressure relief pipe. A compression cap is arranged in the pressure relief pipe and connected with a small stainless steel gasket through an outer leakage spring, the small stainless steel gasket abuts against the first silica gel gasket, and the outer leakage spring is in a compressed state all the time and drives the first silica gel gasket to seal the chromium-plated valve element. The safety valve has the effect of reducing the corrosion speed of the valve element of the safety valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of safety valves, in particular to a kind of anticorrosion safety valve. BACKGROUND

[0002] Safety valve is the closing element under the action of external force and is in closed state, when the medium pressure in equipment or pipeline rises above the specified value, it is discharged to system outside to prevent the medium pressure in pipeline or equipment from exceeding the specified value by emitting medium. Safety valve belongs to automatic valve, mainly used in boiler, pressure vessel and pipeline, control pressure does not exceed the specified value, and it plays an important protective role for personal safety and equipment operation.

[0003] The valve core of traditional safety valve is generally made of metal, which is easy to rust and corrode after long-term use, resulting in damage to safety valve. CONTENT OF THE INVENTION

[0004] In order to slow down the corrosion speed of the valve core of safety valve, the present application provides a kind of anticorrosion safety valve.

[0005] The anticorrosion safety valve provided by the present application adopts the following technical scheme: a kind of anticorrosion safety valve, including safety valve main body, the safety valve main body includes main pipe and pressure relief pipe, the side wall of the pressure relief pipe is provided with pressure relief port, the connecting portion of the main pipe and pressure relief pipe is screw-threadedly connected with chromium-plated valve core, the first silica gel gasket is slidably connected in the pressure relief pipe, the pressure relief pipe is provided with pressure cap, the pressure cap is connected with small stainless steel gasket by outer leakage spring, the small stainless steel gasket is tightly arranged with the first silica gel gasket, the outer leakage spring is always in compression state and drives the first silica gel gasket to close the chromium-plated valve core.

[0006] By adopting the above technical scheme, when the pressure of liquid in the main pipe is greater than the elastic force of spring outer leakage spring, the outer leakage spring is compressed to separate the stainless steel gasket from the silica gel gasket, the liquid in the main pipe flows into the pressure relief pipe through the chromium-plated valve core and is discharged through the pressure relief port, so that the pressure in the main pipe is maintained within a certain range. Compared with the traditional metal valve core, the chromium-plated valve core has wear resistance, the chromium-plating layer can effectively protect the copper surface, slow down oxidation and corrosion. Chromium has high hardness, and copper plated with chromium can significantly improve the wear resistance of copper and prolong the service life of the product.

[0007] Optionally, the pressure relief pipe is movably connected with a rubber seat, the pressure relief pipe is coaxially and slidably connected with a pull rod, the lower end of the pull rod is clamped with the rubber seat and is used to drive the rubber seat to move, one end of the rubber seat is tightly arranged with the small stainless steel gasket, and the other end of the rubber seat is tightly arranged with the outer leakage spring.

[0008] By adopting the technical scheme, when manual pressure relief is needed, an operator pulls the pull rod, the pull rod drives the rubber seat to move so that the rubber seat no longer provides pressure to the stainless steel gasket, the stainless steel gasket is separated from the silica gel gasket under the action of water pressure, liquid in the main pipe flows into the pressure relief pipe, and manual pressure relief is completed.

[0009] Optionally, one end of the pull rod extends out of the pressure relief pipe, and a handle for driving the pull rod to move is arranged at the end of the pull rod.

[0010] By adopting the technical scheme, the pull rod is driven to move by the handle, and operation is relatively convenient.

[0011] Optionally, a rivet is rotationally connected to one end of the pull rod extending out of the pressure relief pipe, and the handle comprises a clamping portion and a handle portion, the clamping portion is fixedly connected to the rivet, and when the handle is in a closed safety valve state, a distance between the end of the clamping portion away from the handle portion and the rivet is greater than a distance between the rivet and the pressure relief pipe.

[0012] By adopting the technical scheme, when the handle is rotated from the closed state to the open state, the distance between the end of the clamping portion away from the handle portion and the rivet is greater than the distance between the rivet and the pressure relief pipe, so that the clamping portion drives the rivet to move away from the main pipe when the clamping portion is rotated, and the rivet drives the pull rod to move when the rivet moves, thereby completing active pressure relief.

[0013] Optionally, a sliding groove is arranged in the side wall of the pull rod and extends through the pull rod, the sliding groove is arranged along the length direction of the pull rod, and the rivet is slidingly connected in the sliding groove.

[0014] By adopting the technical scheme, the sliding groove provides a moving space for the pull rod.

[0015] Optionally, a sealing seat for closing the pressure relief pipe is arranged at the end of the pressure relief pipe, a middle-hole stainless steel sheet is arranged at the end of the sealing seat away from the main pipe, and the pull rod extends through the sealing seat and the middle-hole stainless steel sheet.

[0016] By adopting the technical scheme, the sealing seat is used for closing the end of the pressure relief pipe, so that liquid flows out of the pressure relief port when pressure relief is performed, and the middle-hole stainless steel sheet plays a supporting role.

[0017] Optionally, a limiting ring is arranged on the outer side wall of the chromium-plated valve core, and the limiting ring is clamped with the main pipe.

[0018] By adopting the technical scheme, the limiting ring plays a role of reducing the chromium-plated valve core from falling into the main pipe.

[0019] Optionally, an inner leakage filter screen is arranged in the main pipe.

[0020] By adopting the technical scheme, the inner leakage filter screen reduces the situation that impurities in the liquid flow into the pressure relief pipe to cause the pressure relief port to be blocked.

[0021] Optionally, the main pipe is internally provided with a check valve core, a second silica gel gasket, a spring seat and an inner leakage spring, and the inner leakage spring is used to drive the check valve core to abut against the water inlet of the main pipe.

[0022] By adopting the technical scheme, the check valve core fixes the liquid in the main pipe, and reduces the situation of backflow.

[0023] Optionally, the main pipe is internally provided with an opening spring and a rotating handle used to control the tension degree of the opening spring, the opening spring is connected with the check valve core and used to drive the check valve core to abut against the water inlet of the main pipe.

[0024] By adopting the technical scheme, when the pressure relief valve is not needed, the rotating handle is used to drive the opening spring to drive the check valve core to abut against the water inlet of the main pipe, so as to reduce the liquid flowing into the safety valve.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] Compared with the traditional metal valve core, the chromium plating layer can effectively protect the copper surface, slow down oxidation and corrosion. Chromium has high hardness, and after copper is plated with chromium, the wear resistance of copper can be significantly improved, prolonging the service life of the product.

[0027] When the handle is rotated from the closed state to the open state, since the distance between the clamping part far away from the handle part and the rivet is greater than the distance between the rivet and the pressure relief pipe, the clamping part will drive the rivet to move away from the main pipe when rotating, and the rivet drives the pull rod to move when moving, thereby completing the active pressure relief. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of a corrosion-resistant safety valve according to an embodiment of the present application.

[0029] Figure 2 is a sectional view of a corrosion-resistant safety valve according to an embodiment of the present application.

[0030] Figure 3 is a structural schematic view of a rotating handle of a corrosion-resistant safety valve according to an embodiment of the present application.

[0031] Figure 4 is a structural schematic view of a chromium-plated valve core of a corrosion-resistant safety valve according to an embodiment of the present application.

[0032] Mark No. : 1, handle; 101, handle part; 102, clamping part; 2, rivet; 3, pull rod; 301, sliding groove; 4, middle hole stainless steel sheet; 5, O-ring 7X1.5; 6, O-ring 15X1.2; 7, sealing seat; 8, compression cap; 9, outer leakage spring; 10, rubber seat; 11, small stainless steel gasket; 12, first silica gel gasket; 14, chromium-plated valve core; 141, limiting ring; 15, O-ring 10X1.5; 16, safety valve body; 161, main pipe; 1611, water inlet; 162, pressure relief pipe; 1621, pressure relief port; 17, inner leakage filter screen; 18, opening spring; 19, inner leakage spring; 20, spring seat; 21, one-way valve core; 22, second silica gel gasket; 23, rotating handle. DETAILED DESCRIPTION

[0033] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The present application is further described in detail.

[0034] The embodiment of the present application discloses a kind of anticorrosive safety valve. Refer to Figure 1 、 Figure 2 And Figure 3 A kind of anticorrosive safety valve includes safety valve body 16, safety valve body 16 includes the main pipe 161 and pressure relief pipe 162 connected to each other vertically, one end of main pipe 161 is provided with water inlet 1611, the other end of main pipe 161 is installed with rotating handle 23, second silica gel gasket 22 and spring seat 20 are installed in main pipe 161, spring seat 20 is located at the end of second silica gel gasket 22 away from water inlet 1611, one-way valve core 21 is coaxially slidingly connected in main pipe 161, when one-way valve core 21 is tightly closed second silica gel gasket 22, water inlet 1611 is opened, when one-way valve core 21 is tightly closed water inlet 1611, water inlet 1611 is closed, inner leakage spring is installed in spring seat 20, inner leakage spring is sleeved on one-way valve core 21 and is used to drive one-way valve core 21 tightly closed water inlet 1611, to realize the one-way flow of liquid in main pipe 161, rotating handle 23 is connected with opening spring 18, opening spring 18 is sleeved on one-way valve core 21 and is used to drive one-way valve core 21 tightly closed water inlet 1611 of main pipe 161, when not needing to use pressure relief valve, opening spring 18 is driven one-way valve core 21 tightly closed water inlet 1611 of main pipe 161 by rotating handle 23, to reduce liquid flow into the safety valve.

[0035] Refer to Figure 1 、 Figure 2 And Figure 3The side wall of the pressure relief pipe 162 is provided with a pressure relief port 1621. The connection part of the main pipe 161 and the pressure relief pipe 162 is threadedly connected with a chromium-plated valve core 14. The chromium-plated valve core 14 is externally sleeved with a limiting ring 141. The limiting ring 141 is abutted against the main pipe 161 through an O-shaped ring 10X1.515, thereby reducing the possibility of the chromium-plated valve core 14 falling into the main pipe 161. The upper end of the main pipe 161 is abutted against a first silica gel gasket 12, which plays a sealing role. The end of the first silica gel gasket 12 away from the main pipe 161 is abutted against a small stainless steel gasket 11. The end of the small stainless steel gasket 11 away from the first silica gel gasket 12 is abutted against a rubber seat 10. The rubber seat 10 is externally sleeved with a pull rod 3. The pull rod 3 is coaxially and slidingly connected with the pressure relief pipe 162. The pull rod 3 is clamped with the rubber seat 10 and is used to drive the rubber seat 10 to move. A compression cap 8 is installed in the pressure relief pipe 162. The compression cap 8 is connected with the rubber seat 10 through an external leakage spring 9. The compression cap 8 is always in a compressed state and is used to drive the silica gel gasket to abut against the chromium-plated valve core 14. When the water pressure in the main pipe 161 is greater than the pressure of the external leakage spring 9, the external leakage spring 9 is compressed, so that the silica gel gasket is separated from the chromium-plated valve core 14. The liquid in the main pipe 161 is discharged from the pressure relief pipe 162, thereby maintaining the balance of the pressure. An internal leakage filter screen 17 is installed in the main pipe 161 and is used to filter impurities.

[0036] Referring to Figure 1 , Figure 2 and Figure 3 Figure 1 Figure 2 Figure 3 , the end of the pressure relief pipe 162 away from the main pipe 161 is provided with a sealing seat 7. The two ends of the sealing seat 7 are abutted against the pressure relief pipe 162 through an O-shaped ring 7X1.55 and an O-shaped ring 15X1.26, respectively. The end of the sealing seat 7 away from the main pipe 161 is provided with a middle-hole stainless steel sheet 4. The pull rod 3 penetrates through the sealing seat 7 and the middle-hole stainless steel sheet 4 and extends out of the pressure relief pipe 162. The end of the pull rod 3 is provided with a handle 1 used to drive the pull rod 3 to move, thereby realizing the active pressure relief of the safety valve. The handle 1 comprises a clamping portion 102 and a handle portion 101. The side wall of the pull rod 3 is provided with a sliding groove 301 penetrating through the pull rod 3. The sliding groove 301 is arranged along the length direction of the pull rod 3. A rivet 2 is slidingly connected in the sliding groove 301. The clamping portion 102 is fixedly connected with the rivet 2. When the handle portion 101 is in a closed pressure relief valve state, the distance between the end of the clamping portion 102 away from the handle portion 101 and the rivet 2 is greater than the distance between the rivet 2 and the pressure relief pipe 162. When the handle 1 is rotated from the closed state to the open state, the clamping portion 102 will drive the rivet 2 to move in the direction away from the main pipe 161 due to the distance between the end of the clamping portion 102 away from the handle portion 101 and the rivet 2 being greater than the distance between the rivet 2 and the pressure relief pipe 162. The rivet 2 drives the pull rod 3 to move when the rivet 2 moves, thereby realizing the active pressure relief.

[0037] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An erosion-proof safety valve characterized by: The safety valve body (16) includes a main pipe (161) and a pressure relief pipe (162), the side wall of the pressure relief pipe (162) is provided with a pressure relief port (1621), the connection part of the main pipe (161) and the pressure relief pipe (162) is threadedly connected with a chromium-plated valve core (14), the pressure relief pipe (162) is slidably connected with a first silica gel gasket (12), the pressure relief pipe (162) is provided with a compression cap (8), the compression cap (8) is connected with a small stainless steel gasket (11) through an external leakage spring (9), the small stainless steel gasket (11) is tightly arranged with the first silica gel gasket (12), and the external leakage spring (9) is always in a compressed state and drives the first silica gel gasket (12) to close the chromium-plated valve core (14).

2. An erosion protected relief valve according to claim 1 wherein: The pressure relief pipe (162) is movably connected with a rubber seat (10), the pressure relief pipe (162) is coaxially and slidably connected with a pull rod (3), the lower end of the pull rod (3) is clamped with the rubber seat (10) and is used for driving the rubber seat (10) to move, one end of the rubber seat (10) is tightly arranged with the small stainless steel gasket (11), and the other end of the rubber seat (10) is tightly arranged with the external leakage spring (9).

3. An erosion control safety valve according to claim 2, wherein: One end of the pull rod (3) extends out of the pressure relief pipe (162) and is provided with a handle (1) used for driving the pull rod (3) to move.

4. An erosion control relief valve according to claim 3, wherein: One end of the pull rod (3) extending out of the pressure relief pipe (162) is rotationally connected with a rivet (2), the handle (1) includes a clamping part (102) and a handle part (101), the clamping part (102) is fixedly connected with the rivet (2), and when the handle (1) is in a closed safety valve state, the distance between the end, away from the handle part (101), of the clamping part (102) and the rivet (2) is greater than the distance between the rivet (2) and the pressure relief pipe (162).

5. An erosion control relief valve according to claim 4 wherein: The side wall of the pull rod (3) is provided with a sliding groove (301) penetrating through the pull rod (3), and the sliding groove (301) is arranged along the length direction of the pull rod (3).

6. An erosion control safety valve according to claim 3, wherein: The end of the pressure relief pipe (162) is provided with a sealing seat (7) used for closing the pressure relief pipe (162), one end of the sealing seat (7), away from the main pipe (161), is provided with a center-hole stainless steel sheet (4), and the pull rod (3) penetrates through the sealing seat (7) and the center-hole stainless steel sheet (4).

7. An erosion control safety valve as defined in claim 1 wherein: The outer side wall of the chromium-plated valve core (14) is provided with a limiting ring (141), and the limiting ring (141) is clamped with the main pipe (161).

8. An erosion control safety valve according to claim 1 wherein: The main pipe (161) is provided with an internal leakage filter screen (17).

9. An erosion control safety valve as defined in claim 1 wherein: The main pipe (161) is provided with a one-way valve core (21), a second silica gel gasket (22), a spring seat (20) and an internal leakage spring (19), and the internal leakage spring (19) is used for tightly arranging the one-way valve core (21) with the water inlet (1611) of the main pipe (161).

10. An erosion control safety valve according to claim 9, wherein: The main pipe (161) is internally provided with an opening spring (18) and a rotating handle (23) for controlling the tension of the opening spring (18), the opening spring (18) is connected with the one-way valve spool (21) and used to drive the one-way valve spool (21) to tightly abut the water inlet (1611) of the main pipe (161).

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