Quick reset type safety valve

Abstract

The utility model relates to the technical field of safety valves, and discloses a quick reset type safety valve which comprises a valve body, a piston, a valve cover, an adjusting mechanism, a reset mechanism and a spring assembly, the piston is movably connected to the interior of the valve body, the valve cover is arranged at the top of the valve body, the adjusting mechanism is fixedly connected to the surface of the valve cover, and the reset mechanism is arranged on the surface of the valve cover. The reset mechanism is arranged on the top of the valve deck, and the spring assembly is installed between the piston and the valve deck. According to the quick reset type safety valve, continuous and accurate pressure adjustment can be achieved by rotating the adjusting nut without shutdown, the pressure control requirements of different working conditions are met, and the adaptability and stability of a production system are improved. And only the handle is pulled for resetting, complicated operation and part replacement are not needed, the downtime is greatly shortened, the loss is reduced, and the efficiency is improved. Through the optimized spring and pressure balance chamber structure, the working stability and reliability are enhanced, precise pressure control under complex working conditions is ensured, equipment is effectively protected, and the accident probability is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to safety valve technical field, concretely is a kind of quick reset type safety valve. BACKGROUND

[0002] In industrial production process, spring type safety valve is the key component for guaranteeing system pressure stability and preventing equipment from being damaged due to overpressure.

[0003] Prior art discloses application number: 202320287756.3 of a kind of shearing type safety valve, it is related to safety valve technical field, including hydraulic oil cylinder and valve body, hydraulic oil cylinder includes shell and piston, piston is slidably connected in shell, piston will the inside of shell be divided into upper cavity and lower cavity, spring assembly is arranged in lower cavity, the lower end of piston is connected with the upper end of actuator valve rod, the lower end of actuator valve rod is connected with shearing valve plate assembly, shearing valve plate assembly includes shearing valve plate body and bushing, valve body is equipped with shearing valve seat, shearing valve seat is equipped with central passage, shearing valve plate assembly can be slidably connected on valve body, shearing valve plate body and bushing can be individually located in central passage. The above-mentioned utility model utilizes the thrust of spring assembly, can effectively push piston to move, to control shearing valve plate assembly to close valve body

[0004] The existing shearing type safety valve is inconvenient to adjust pressure, and needs to stop drilling and replace reset piston rod, reset shearing plate, shearing pin and many other components, which is complicated and time-consuming, seriously affects production efficiency, increases production cost and safety risk. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of quick reset type safety valve to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of quick reset type safety valve, including valve body, piston, valve cover, adjusting mechanism, reset mechanism and spring assembly, the piston is movably connected in the inside of valve body, the valve cover is set at the top of valve body, the adjusting mechanism is fixedly connected to the surface of valve cover, the reset mechanism is set at the top of valve cover, the spring assembly is installed between piston and valve cover.

[0007] Preferably, the surface of the valve body is provided with a liquid inlet and a discharge port, and the inside of the valve body is provided with a pressure balance chamber, wherein the pressure balance chamber is connected with the inner cavity of the valve body through a piston port. When the system is pressurized, the pressure can be buffered to avoid impact, so that the safety valve can be opened smoothly and the system safety can be ensured.

[0008] Preferably, the adjusting mechanism comprises an adjusting nut and an adjusting screw, the adjusting nut is threadedly connected with the valve cover, one end of the adjusting screw is connected with the piston, and the other end of the adjusting screw passes through the valve cover and cooperates with the adjusting nut to play a adjusting role.

[0009] Preferably, the reset mechanism includes a reset handle, a reset link, and a reset spring. The reset handle is installed on the outside of the valve cover and connected to the piston through the reset link. The reset spring is sleeved on the reset link and plays the main reset role.

[0010] Preferably, the valve body is made of high-strength alloy material to ensure the strength of the safety valve during use.

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

[0012] 1. This quick-reset safety valve allows for continuous and precise pressure adjustment by simply turning the adjusting nut without shutting down the machine. This meets the stringent pressure control requirements under different industrial conditions and improves the adaptability and stability of the production system.

[0013] 2. This quick-reset safety valve requires only the operation of the reset handle to reset, eliminating the need for complicated operating procedures and parts replacement. This greatly reduces equipment downtime, minimizes economic losses caused by downtime, and improves production efficiency.

[0014] 3. This quick-reset safety valve features an optimized spring assembly and pressure balance chamber structure, enhancing the stability and reliability of its operation. This ensures precise pressure control even under complex working conditions, effectively protecting equipment safety and reducing the probability of accidents. Attached Figure Description

[0015] Fig. 1 This is a three-dimensional structural diagram of the present invention;

[0016] Fig. 2 This is a side view of the structure of this utility model;

[0017] Fig. 3 This is a schematic diagram of the disassembled structure of this utility model;

[0018] In the diagram: 1. Valve body; 2. Piston; 3. Valve cover; 4. Adjustment mechanism; 5. Reset mechanism; 6. Spring assembly. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figs. 1-3This utility model provides the following technical solution: a quick-reset safety valve, comprising a valve body 1, a piston 2, a valve cover 3, an adjusting mechanism 4, a reset mechanism 5, and a spring assembly 6. The surface of the valve body 1 is provided with an inlet and an outlet. A pressure balancing chamber is provided inside the valve body 1, which is connected to the inner cavity of the valve body 1 via a piston port. This pressure balancing chamber buffers pressure during system pressurization, preventing impact and ensuring smooth opening of the safety valve, thus guaranteeing system safety. The piston 2 is movably connected inside the valve body 1. The valve cover 3 is located on the top of the valve body 1, and the adjusting mechanism 4 is fixed. The adjusting mechanism 4, connected to the surface of the valve cover 3, includes an adjusting nut and an adjusting screw. The adjusting nut is threadedly connected to the valve cover 3. One end of the adjusting screw is connected to the piston 2, and the other end passes through the valve cover 3 and engages with the adjusting nut to perform the adjusting function. The reset mechanism 5 is located on the top of the valve cover 3. The reset mechanism 5 includes a reset handle, a reset connecting rod, and a reset spring. The reset handle is installed on the outside of the valve cover 3 and is connected to the piston 2 through the reset connecting rod. The reset spring is sleeved on the reset connecting rod and plays the main reset function. The spring assembly 6 is installed between the piston 2 and the valve cover 3.

[0021] During normal operation, the spring assembly 6 is compressed, applying downward pressure to the piston 2 to keep the safety valve closed and prevent fluid from passing through. When the system pressure rises to near or reaches the preset opening pressure, the fluid pressure overcomes the elasticity of the spring assembly 6, pushing the piston 2 upward, opening the safety valve, and releasing the fluid through the discharge port. For pressure adjustment, the adjusting nut can be rotated using a tool according to actual operating conditions. Turning the adjusting nut clockwise moves the adjusting screw downward, increasing the compression of the spring assembly 6 and raising the opening pressure; turning it counterclockwise does the opposite, allowing for flexible adjustment of the opening pressure. After pressure release, the system pressure decreases. At this point, the reset handle is moved, and the reset linkage pushes the piston 2 upward. When the piston 2 returns to its initial position, the safety valve closes, restoring normal operation.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-reset safety valve, comprising a valve body (1), a piston (2), a valve cover (3), an adjusting mechanism (4), a reset mechanism (5), and a spring assembly (6), characterized in that: The piston (2) is movably connected to the inside of the valve body (1), the valve cover (3) is disposed on the top of the valve body (1), the adjusting mechanism (4) is fixedly connected to the surface of the valve cover (3), the reset mechanism (5) is disposed on the top of the valve cover (3), and the spring assembly (6) is installed between the piston (2) and the valve cover (3).

2. The quick-reset safety valve according to claim 1, characterized in that: The valve body (1) has an inlet and an outlet on its surface, and a pressure balance chamber is provided inside the valve body (1), wherein the pressure balance chamber is connected to the inner cavity of the valve body (1) through a piston port.

3. A quick-reset safety valve according to claim 1, characterized in that: The adjusting mechanism (4) includes an adjusting nut and an adjusting screw. The adjusting nut is threadedly connected to the valve cover (3). One end of the adjusting screw is connected to the piston (2), and the other end passes through the valve cover (3) and engages with the adjusting nut.

4. A quick-reset safety valve according to claim 1, characterized in that: The reset mechanism (5) includes a reset handle, a reset link and a reset spring. The reset handle is installed on the outside of the valve cover (3) and connected to the piston (2) through the reset link. The reset spring is sleeved on the reset link.

5. A quick-reset safety valve according to claim 1, characterized in that: The valve body (1) is made of high-strength alloy material.

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