A hydraulic safety valve for easy installation

Abstract

The utility model relates to hydraulic safety valve technical field discloses a kind of hydraulic safety valves of being convenient for installation, including valve body, the fluid input end of valve body is connected with fluid input pipe by mounting assembly, the fluid output end of valve body is connected with fluid output pipe by mounting assembly;The mounting assembly includes fixed ring, connecting flange, push piece, the fixed ring is welded at the port of fluid input end, fluid output end, by the insertion rod on fixed ring from the flange hole on connecting flange passes through, form radial fixed, then by push piece horizontal push in, then the baulk is clamped into through slot, again push push piece so that baulk and insertion rod stagger, form axial stagger, to realize axial fixed, then bolt fixed connecting piece and fixed ring, realize the fixation of push piece, and the bolt of fixed connecting piece here and valve body are in perpendicular state, when using tool screw on bolt, will not collide with valve body.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic safety valve technology, specifically to a hydraulic safety valve that is easy to install. Background Technology

[0002] A hydraulic safety valve is a safety protection valve. Its opening and closing parts are normally closed under external force. When the pressure of the medium in the equipment or pipeline rises and exceeds the specified value, it automatically opens to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value by discharging the medium to the outside of the system. When installing existing hydraulic safety valves, they are connected through flanges. However, flange connections require at least two bolts to ensure the strength of the installation. When tightening the bolts, the bolts are parallel to the valve body. After turning the bolts more than half a turn, the tool needs to be loosened and tightened again before turning. This is to avoid the tool or person's hand colliding with the valve body when tightening the bolts. The operation time is long, and because at least two bolts need to be tightened, this fixing method takes even longer. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic safety valve that is easy to install, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic safety valve that is easy to install, comprising a valve body, wherein the fluid input end of the valve body is connected to a fluid input pipe through a mounting assembly, and the fluid output end of the valve body is connected to a fluid output pipe through a mounting assembly;

[0005] The mounting assembly includes a retaining ring, a connecting flange, and a pushing plate. The retaining ring is welded to the ports of the fluid inlet and outlet. The connecting flange is welded to the ports of the fluid inlet and outlet pipes. An insertion rod is fixedly mounted on the retaining ring and passes through the flange hole on the connecting flange. The insertion rod has an inner cavity with an anti-detachment body movable inside. A stop block is fixedly mounted on the end of the anti-detachment body facing outward from the inner cavity. The thickness of the stop block is the same as that of the insertion rod. The pushing plate has a through groove that aligns with and abuts against the stop block. A connecting plate is fixedly mounted on the outer wall of the pushing plate and is fixedly connected to the retaining ring by bolts.

[0006] Furthermore, a detachable valve cover is fixedly connected to the top of the valve body by bolts, a fixing plate is fixedly installed inside the valve body, a valve plate is provided inside the valve body, a valve stem is fixedly installed at the top of the valve plate, the top of the valve stem moves through the inner wall of the fixing plate, a spring is fixedly installed at the top of the valve plate, and the top of the spring is fixedly connected to the bottom of the fixing plate.

[0007] Furthermore, a hydraulic chamber is provided inside the valve body, and a piston is slidably arranged in the hydraulic chamber. The bottom end of the piston is fixedly connected to the top end of the valve stem. The piston is located above the fixed plate, and a hydraulic pipe joint is provided on the top of the detachable valve cover.

[0008] Furthermore, the fixing ring has six insertion rods and two pushing plates, which correspond to the three front blocks and the three rear blocks respectively.

[0009] Furthermore, a gasket is placed between the connecting flange and the push plate, the side of the gasket facing the push plate is flush with the insertion rod, and a through hole is provided on the gasket, through which the insertion rod passes.

[0010] Furthermore, a sealing gasket is provided at the connection between the detachable valve cover and the valve body, and a ceramic sealing ring is fixedly installed at the point where the valve stem passes through the fixing plate, with the valve stem passing through the ceramic sealing ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By passing the insertion rod on the retaining ring through the flange hole on the connecting flange, radial fixation is achieved. Then, the pusher plate is pushed horizontally, and the stop block is inserted into the through groove. The pusher plate is then pushed to make the stop block and the insertion rod misaligned, thus achieving axial fixation. Finally, bolts are used to fix the connecting plate and the retaining ring to fix the pusher plate. The bolts fixing the connecting plate here are perpendicular to the valve body, so they will not collide with the valve body when tightening the bolts with tools. Throughout the process, the number of bolts that need to be tightened is significantly smaller than those directly connected through the flange. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0015] Figure 3 This is a schematic diagram of the installation component of this utility model;

[0016] Figure 4 This utility model Figure 3 Exploded view of the structure;

[0017] Figure 5 This is a structural schematic diagram of the fixing ring and insertion rod of this utility model in a front sectional view.

[0018] In the diagram: 1. Valve body; 2. Fluid inlet; 3. Fluid outlet; 4. Fluid inlet pipe; 5. Fluid outlet pipe; 6. Mounting assembly; 601. Retaining ring; 602. Connecting flange; 603. Connecting piece; 604. Push piece; 605. Through groove; 606. Flange hole; 607. Insert rod; 608. Inner cavity; 609. Anti-detachment body; 6010. Stop block; 7. Valve plate; 8. Retaining piece; 9. Valve stem; 10. Spring; 11. Removable valve cover; 12. Hydraulic pipe joint; 13. Sealing gasket; 14. Hydraulic chamber; 15. Piston; 16. Ceramic sealing ring; 17. Gasket; 1701. Through hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1-5 This utility model provides a technical solution: a hydraulic safety valve that is easy to install, including a valve body 1, the fluid input end 2 of the valve body 1 is connected to the fluid input pipe 4 through the mounting assembly 6, and the fluid output end 3 of the valve body 1 is connected to the fluid output pipe 5 through the mounting assembly 6.

[0021] Mounting assembly 6 includes a retaining ring 601, a connecting flange 602, and a pushing plate 604. The retaining ring 601 is welded to the ports of the fluid inlet 2 and the fluid outlet 3. The connecting flange 602 is welded to the ports of the fluid inlet pipe 4 and the fluid outlet pipe 5. An insertion rod 607 is fixedly mounted on the retaining ring 601. The insertion rod 607 passes through the flange hole 606 on the connecting flange 602. An inner cavity 608 is formed inside the insertion rod 607. An anti-detachment body 609 is movably disposed in the inner cavity 608. A stop block 6010 is fixedly mounted on the end of the anti-detachment body 609 facing outward from the inner cavity 608. The thickness of the stop block 6010 is the same as the thickness of the insertion rod 607. A through groove 605 is formed on the pushing plate 604. The through groove 605 is aligned with the stop block 6010 and abuts against it. The outer wall of the pushing plate 604 is fixedly mounted. The valve body 603 is equipped with a connecting piece 603, which is fixedly connected to the retaining ring 601 by bolts. The insertion rod 607 on the retaining ring 601 passes through the flange hole 606 on the connecting flange 602 to form a radial fixation. Then, the pushing piece 604 is pushed horizontally, and the stop block 6010 is inserted into the through groove 605. The pushing piece 604 is then pushed to make the stop block 6010 and the insertion rod 607 misaligned, forming an axial misalignment, thereby achieving axial fixation. Then, the connecting piece 603 and the retaining ring 601 are fixed with bolts to fix the pushing piece 604. The bolts fixing the connecting piece 603 are perpendicular to the valve body 1, so they will not collide with the valve body 1 when the bolts are tightened with tools. In the whole process, the bolts that need to be tightened are significantly smaller than those directly connected through the flange.

[0022] The top of the valve body 1 is fixedly connected to a detachable valve cover 11 by bolts. A fixing plate 8 is fixedly installed inside the valve body 1. A valve plate 7 is provided inside the valve body 1. A valve stem 9 is fixedly installed on the top of the valve plate 7. The top of the valve stem 9 moves through the inner wall of the fixing plate 8. A spring 10 is fixedly installed on the top of the valve plate 7. The top of the spring 10 is fixedly connected to the bottom of the fixing plate 8. The spring 10 is set to press the valve plate 7 tightly against the channel opening inside the valve body 1. The fluid pressure entering the valve body 1 from the fluid input end 2 needs to overcome the force on the valve plate 7 to push the valve plate 7 to move, so that the fluid input end 2 and the fluid output end 3 are connected to discharge fluid and reduce the pressure in the hydraulic system.

[0023] A hydraulic chamber 14 is provided inside the valve body 1, and a piston 15 is slidably arranged inside the hydraulic chamber 14. The bottom end of the piston 15 is fixedly connected to the top end of the valve stem 9. The piston 15 is located above the fixed plate 8, and a hydraulic pipe joint 12 is provided on the top of the detachable valve cover 11. The hydraulic control line can be connected to the hydraulic pipe joint 12, and hydraulic fluid (fluid outside the hydraulic system) is injected into the hydraulic chamber 14 to form a downward pressure above the piston 15, thereby increasing the force acting on the valve plate 7. This method can be used to control the discharge fluid pressure threshold of the hydraulic safety valve, so that the safety pressure threshold in the hydraulic system can be set as needed.

[0024] The retaining ring 601 has six insertion rods 607 and two push plates 604, which correspond to the three front stops 6010 and the three rear stops 6010 respectively. The six insertion rods 607 are used to set the six stops 6010, increasing the fixing positions of the retaining ring 601 and the connecting flange 602 in the radial and axial directions. The push plates 604 are set as two pieces, so that when installing the push plates 604, the push plates 604 can be directly pushed so that the through grooves 605 on the push plates 604 are aligned with the stops 6010 and snapped in.

[0025] A gasket 17 is placed between the connecting flange 602 and the push plate 604. The side of the gasket 17 facing the push plate 604 is flush with the insertion rod 607. A through hole 1701 is provided on the gasket 17, and the insertion rod 607 passes through the through hole 1701. The gasket 17 of the corresponding thickness is selected according to the thickness of the connecting flange 602, so that the gasket 17 can serve as a supplementary structure to ensure that the stop block 6010 can form an axial clamping after being pushed by the push plate 604 and misaligned with the insertion rod 607.

[0026] A sealing gasket 13 is placed at the connection between the removable valve cover 11 and the valve body 1. A ceramic sealing ring 16 is fixedly installed at the point where the valve stem 9 passes through the fixing plate 8. The valve stem 9 passes through the ceramic sealing ring 16. The sealing gasket 13 is provided to ensure the sealing between the removable valve cover 11 and the valve body 1. The ceramic sealing ring 16 is provided to prevent the fluid in the valve body 1 from passing through the fixing plate 8 and entering the hydraulic chamber 14.

[0027] Working principle: In use, first align the retaining ring 601 on the fluid inlet 2 or fluid outlet 3 with the connecting flange 602 on the fluid inlet pipe 4 or fluid outlet pipe 5. Then push the valve body 1 or the fluid inlet pipe 4 and fluid outlet pipe 5 so that the insertion rod 607 passes through the flange hole 606. Select a gasket 17 of the corresponding thickness so that the stop block 6010 passes through the through hole 1701. Then take out the push plate 604 and push it horizontally so that the through groove 605 on the push plate 604 is aligned with the stop block 6010 until the push plate 604 pushes the stop block 6010 out of place from the insertion rod 607. Then tighten the bolts of the fixing connecting plate 603 and the retaining ring 601.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A hydraulic safety valve that is easy to install, comprising a valve body (1), characterized in that: The fluid input end (2) of the valve body (1) is connected to the fluid input pipe (4) through the mounting assembly (6), and the fluid output end (3) of the valve body (1) is connected to the fluid output pipe (5) through the mounting assembly (6). The mounting assembly (6) includes a retaining ring (601), a connecting flange (602), and a pusher plate (604). The retaining ring (601) is welded to the ports of the fluid inlet (2) and the fluid outlet (3). The connecting flange (602) is welded to the ports of the fluid inlet pipe (4) and the fluid outlet pipe (5). An insertion rod (607) is fixedly mounted on the retaining ring (601). The insertion rod (607) passes through the flange hole (606) on the connecting flange (602). An inner cavity (604) is formed inside the insertion rod (605). 8) An anti-detachment body (609) is movably disposed in the inner cavity (608). A stop block (6010) is fixedly installed on one end of the anti-detachment body (609) facing out of the inner cavity (608). The thickness of the stop block (6010) is the same as that of the insertion rod (607). A through groove (605) is opened on the pushing plate (604). The through groove (605) is aligned with the stop block (6010) and abuts against it. A connecting plate (603) is fixedly installed on the outer wall of the pushing plate (604). The connecting plate (603) is fixedly connected to the fixing ring (601) by bolts.

2. The hydraulic safety valve for easy installation according to claim 1, characterized in that: The top of the valve body (1) is fixedly connected to a detachable valve cover (11) by bolts. A fixing plate (8) is fixedly installed inside the valve body (1). A valve plate (7) is provided inside the valve body (1). A valve stem (9) is fixedly installed at the top of the valve plate (7). The top of the valve stem (9) moves through the inner wall of the fixing plate (8). A spring (10) is fixedly installed at the top of the valve plate (7). The top of the spring (10) is fixedly connected to the bottom of the fixing plate (8).

3. The hydraulic safety valve for easy installation according to claim 1, characterized in that: The valve body (1) has a hydraulic chamber (14) inside, and a piston (15) is slidably arranged in the hydraulic chamber (14). The bottom end of the piston (15) is fixedly connected to the top end of the valve stem (9). The piston (15) is located above the fixing plate (8), and a hydraulic pipe joint (12) is provided on the top of the detachable valve cover (11).

4. The hydraulic safety valve for easy installation according to claim 1, characterized in that: The fixed ring (601) has six insertion rods (607) and two push plates (604), which correspond to the three front stops (6010) and the three rear stops (6010) respectively.

5. A hydraulic safety valve for easy installation according to claim 1, characterized in that: A gasket (17) is placed between the connecting flange (602) and the push plate (604). The side of the gasket (17) facing the push plate (604) is flush with the insertion rod (607). A through hole (1701) is provided on the gasket (17), and the insertion rod (607) passes through the through hole (1701).

6. A hydraulic safety valve that is easy to install according to claim 2, characterized in that: A sealing gasket (13) is placed at the connection between the detachable valve cover (11) and the valve body (1). A ceramic sealing ring (16) is fixedly installed at the point where the fixing plate (8) is penetrated by the valve stem (9). The valve stem (9) passes through the ceramic sealing ring (16).

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