Pressure reduction type safety valve

Abstract

The utility model discloses a pressure reduction type safety valve which comprises a valve seat, a valve sleeve and a valve element, the valve seat is connected with the valve sleeve, the valve element is arranged in a cavity of the valve sleeve, and the valve element can move in a reciprocating mode in the extending direction of the cavity of the valve sleeve. One end of the valve seat is connected with one end of the valve sleeve, and the adjusting valve cover is connected with the valve sleeve; a spring is arranged between the adjusting valve cover and the valve element, the valve element comprises a sealing pipe part and a guide part which are fixedly connected, the sealing pipe part is arranged in a cavity of the valve seat in a penetrating mode, the adjusting valve cover is provided with a guide hole, the guide part is arranged in the guide hole in a penetrating mode, the side wall of the valve element is provided with a protruding ring, the valve cover is provided with an annular hole, and the annular hole is provided with an internal thread. The adjusting ring is provided with external threads and is in threaded connection with the annular hole, one end of the spring is connected with the convex ring, the other end of the spring abuts against the adjusting ring, a sealing part is arranged on the side, facing the valve seat, of the valve element, and a buffering cushion is arranged on the end face of the sealing part.

Description

TECHNICAL FIELD

[0001] The utility model relates to a safety valve technical field, concretely relates to a pressure reducing type safety valve. BACKGROUND

[0002] Safety valve is the closing piece under the action of external force and is in the normally closed state, when the medium pressure in the equipment or pipeline rises more than the specified value, it prevents the medium pressure in the pipeline or equipment from exceeding the specified value by discharging the medium to the system outside, safety valve belongs to automatic valve, mainly used in boiler, pressure vessel and pipeline, controls the pressure not to exceed the specified value, and plays an important protection role for personal safety and equipment operation.

[0003] As prior art, Chinese patent CN205781147U proposes a pressure reducing safety valve, which realizes the rapid discharge of gas, but in the technical scheme, the valve core is moved and sealed by the spring driving, and when the medium pressure exceeds the spring force, the valve core is opened to release pressure, and the spring is not adjustable, so that the pressure required to open the valve core in the pipeline is different, and the use safety and stability are not ideal, when the spring elasticity is too large, the impact force between the valve core and the sealing surface is large, and under the condition of long time use, the valve core may be deformed or even damaged, which affects the sealing effect and shortens the service life, and there is still room for improvement. UTILITY MODEL CONTENTS

[0004] The utility model aims at a pressure reducing type safety valve to solve the problems in the above background art.

[0005] The utility model discloses a pressure reducing type safety valve, including the valve seat, the valve bush and the valve core, the valve seat is connected with the valve bush, the valve core is located in the cavity of the valve bush, the valve core can reciprocate along the extension direction of the cavity of the valve bush, to realize the communication or disconnection between the cavity of the valve seat and the cavity of the valve bush, still including the adjusting valve cover, one end of the valve seat is connected with the one end of the valve bush by screw thread, the adjusting valve cover is connected with the other end of the valve bush by screw thread, be equipped with the spring between the adjusting valve cover and the valve core, and the valve core includes sealing pipe part and guide part, and the sealing pipe part is fixedly connected with the guide part, the sealing pipe part is arranged in the cavity of the valve seat, the adjusting valve cover is provided with the guide hole, the guide part is arranged in the guide hole, the side wall of the valve core is provided with the convex ring, the valve cover is provided with the annular hole, the annular hole is provided with internal thread, still including the adjusting ring, the adjusting ring is provided with external thread and is connected with the annular hole by screw thread, one end of the spring is connected with the convex ring, the other end is abutted with the adjusting ring, the one side of the valve core towards the valve seat is equipped with the sealing part, and the end face of the sealing part is equipped with the buffer pad.

[0006] The above technical scheme is adopted, the rotating adjusting ring is threadedly connected with the annular hole and moves along the extending direction in the cavity of the valve sleeve, one end of the spring is always in abutment with the adjusting ring, thereby the elasticity of the spring is adjusted, the size of the pressure in the pipeline under different conditions is adapted, the safety and stability are improved, the buffer pad is arranged at the sealing part, the impact force received by the sealing part is slowed down, thereby the deformation or even damage of the valve core is reduced, the sealing effect is guaranteed, and the service life is prolonged.

[0007] As a further optimization of the utility model, the valve core is provided with a mounting cavity on the side facing the valve seat, a pressure sensor, a controller, a buzzer one and a buzzer two are arranged in the mounting cavity, the controller is electrically connected with the pressure sensor, and the buzzer one and the buzzer two are electrically connected with the controller.

[0008] The above technical scheme is adopted, when the spring pushes the sealing part to adhere to the valve seat, the pressure sensor detects the instantaneous pressure, when the instantaneous pressure is greater than a preset value, the pressure sensor transmits a signal to the controller, the controller controls the buzzer one to sound, reminding the worker to rotate the adjusting ring of the spring to reduce the elasticity of the spring, when the sealing part is sealed with the valve seat, the pressure sensor detects that the pressure is small, the pressure sensor transmits a signal to the controller, the controller controls the buzzer to sound, reminding the worker to rotate the adjusting ring of the spring to increase the elasticity of the spring, thereby the sealing property is guaranteed.

[0009] As a further optimization of the utility model, the buffer pad is provided with a sealing pad on the side facing the valve seat, and the surface of the sealing pad is serrated.

[0010] The above technical scheme is adopted, when the sealing pad is pressed on the valve seat, the surface of the serration is deformed to firmly adhere to the valve seat, and the sealing property is further improved.

[0011] As a further optimization of the utility model, the reinforcing rod is further arranged, and two ends of the reinforcing rod are connected with the sealing part and the convex ring respectively.

[0012] The above technical scheme is adopted, the reinforcing rod is arranged to connect the sealing part and the convex ring, and the compression strength of the two is improved, thereby the structural strength of the valve core is improved.

[0013] As a further optimization of the utility model, the end of the adjusting ring is provided with a convex anti-skid block.

[0014] The above technical scheme is adopted, the anti-skid effect of the surface of the adjusting ring is improved.

[0015] The utility model discloses a beneficial effect is: rotation adjustment ring, adjustment ring and annular hole screw thread cooperation along the extension direction of the cavity of valve bush movement, because the spring always and adjustment ring abut from one end, thereby realize the elasticity of spring to adjust, thereby adapt to the size of the pressure in the pipeline under different conditions, improve the security and stability, set up the buffer pad in the sealing part, slow down the impact force that sealing part received, thereby reduce the deformation even breakage of the condition of valve core, guarantee the sealing effect, prolong the life. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is sectional view structural schematic diagram of the utility model;

[0017] Figure 2 It is sectional view structural schematic diagram of the utility model in valve core;

[0018] Figure 3 It is sectional view structural schematic diagram of the utility model in adjusting valve cover;

[0019] Figure 4 It is sectional view structural schematic diagram of the utility model in adjustment ring;

[0020] Figure 5 It is Figure 2 Enlarged schematic diagram in.

[0021] Figure label meaning: 11, valve seat;12, valve bush;13, valve core;131, guide portion;132, sealing pipe portion;14, adjusting valve cover;141, guide hole;15, spring;16, pressure relief hole;2, adjustment ring;21, anti -slip portion;3, annular hole;4, reinforcing rod;5, adjustment ring;51, anti -slip block;6, installation cavity;71, pressure sensor;72, controller;81, buzzer one;82, buzzer two;9, buffer pad;91, sealing pad. DETAILED DESCRIPTION

[0022] This embodiment is only the explanation of the utility model, and it is not the limitation of the utility model, and the person skilled in the art can make the modification of no creative contribution according to the need after reading the present specification, but as long as in the utility model's right claim range all receive the patent law's protection.

[0023] Example one;

[0024] Refer to the attached Figures 1-5The utility model discloses a further setting of this embodiment is: a pressure reducing type safety valve, including valve seat 11, valve bush 12 and valve core 13, be equipped with pressure relief hole 16 in valve bush 12, valve seat 11 is connected with valve bush 12, and valve core 13 is arranged in the cavity of valve bush 12, and valve core 13 can reciprocate along the extension direction of the cavity of valve bush 12, to realize the cavity of valve seat 11 and the cavity of valve bush 12 between the communication or disconnection, still including adjusting valve cover 14, and one end of valve seat 11 is connected with one end of valve bush 12 by screw thread, and the other end of adjusting valve cover 14 is connected with valve bush 12 by screw thread, and spring 15 is equipped between adjusting valve cover 14 and valve core 13, and valve core 13 includes sealing pipe part 132 and guide part 131, and sealing pipe part 132 is fixedly connected with guide part 131, and sealing pipe part 132 is arranged in the cavity of valve seat 11, and adjusting valve cover 14 is provided with guide hole 141, and guide part 131 is arranged in guide hole 141,

[0025] The side wall of valve core 13 is provided with a convex ring, the valve cover is provided with an annular hole 3, the annular hole 3 is provided with an internal thread, further comprising an adjusting ring 52, the adjusting ring 52 is provided with an external thread and is connected with the annular hole 3 by screw thread, further, the end of the adjusting ring 52 is provided with a convex anti-skid block 51, and the anti-skid effect of the surface of the adjusting ring 52 is increased.

[0026] One end of the spring 15 is connected with the convex ring, the other end is abutted with the adjusting ring 52, one side of the valve core 13 towards the valve seat 11 is provided with a sealing part, the end face of the sealing part is provided with a buffer pad 9, further, one side of the buffer pad 9 towards the valve seat 11 is provided with a sealing pad 91, the surface of the sealing pad 91 is zigzag, when the sealing pad 91 is pressed on the valve seat 11, the surface of the zigzag is deformed to closely adhere to the valve seat 11, and the sealing property is further improved.

[0027] Further, it further includes a reinforcing rod 4, the two ends of the reinforcing rod 4 are connected with the sealing part and the convex ring respectively, the reinforcing rod 4 connects the sealing part and the convex ring, so that the compression strength of the two is improved, and the structural strength of the valve core 13 is improved.

[0028] The principle of the embodiment is that: rotating the adjusting ring 52, the adjusting ring 52 is moved along the extension direction in the cavity of the valve bush 12 in cooperation with the annular hole 3 by screw thread, because one end of the spring 15 is always abutted with the adjusting ring 52, the elasticity of the spring 15 is adjusted, the size of the pressure in the pipeline under different conditions is adapted, the safety and stability are improved, the buffer pad 9 is arranged on the sealing part, the impact force received by the sealing part is reduced, the deformation or damage of the valve core 13 is reduced, the sealing effect is guaranteed, and the service life is prolonged.

[0029] Embodiment two: refer to the attached Figure 2 , 5The embodiment is further provided on the basis of the first embodiment, and the side of the valve core 13 towards the valve seat 11 is provided with a mounting cavity 6, the mounting cavity 6 is provided with a pressure sensor, a controller 72, a buzzer 81 and a buzzer 82, the controller 72 is electrically connected with the pressure sensor, and the buzzer 81 and the buzzer 82 are electrically connected with the controller 72.

[0030] The principle of the embodiment is that when the spring 15 pushes the sealing part to adhere to the valve seat 11, the pressure sensor detects the instantaneous pressure, when the instantaneous pressure is greater than a preset value, the pressure sensor transmits a signal to the controller 72, the controller 72 controls the buzzer 81 to sound, reminding the worker to rotate the spring 15 to adjust the ring 52 to reduce the elasticity of the spring 15, when the sealing part is sealed with the valve seat 11, the pressure sensor detects that the pressure is small, the pressure sensor transmits a signal to the controller 72, the controller 72 controls the buzzer to sound, reminding the worker to rotate the spring 15 to adjust the ring 52 to increase the elasticity of the spring 15, so as to ensure the sealing performance.

[0031] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and the above-mentioned improvements and modifications are also regarded as the protection scope of the present application.

Claims

1. A pressure reducing safety valve, comprising a valve seat (11), a valve sleeve (12) and a valve core (13), the valve seat (11) is connected with the valve sleeve (12), the valve core (13) is arranged in the cavity of the valve sleeve (12), the valve core (13) can reciprocate along the extension direction of the cavity of the valve sleeve (12) to realize the communication or disconnection between the cavity of the valve seat (11) and the cavity of the valve sleeve (12); further comprising an adjusting valve cover (14), one end of the valve seat (11) is threadedly connected with one end of the valve sleeve (12), the other end of the valve sleeve (12) is threadedly connected with the adjusting valve cover (14), a spring (15) is arranged between the adjusting valve cover (14) and the valve core (13), the valve core (13) comprises a sealing pipe part (132) and a guide part (131), the sealing pipe part (132) is fixedly connected with the guide part (131); the sealing pipe part (132) is arranged in the cavity of the valve seat (11), the adjusting valve cover (14) is provided with a guide hole (141), the guide part (131) is arranged in the guide hole (141), characterized in that, The side wall of the valve core (13) is provided with a convex ring, the valve cover is provided with an annular hole (3), the annular hole (3) is provided with an internal thread, further comprising an adjusting ring (5) (2), the adjusting ring (5) (2) is provided with an external thread and is threadedly connected with the annular hole (3), one end of the spring (15) is connected with the convex ring, the other end is abutted with the adjusting ring (5) (2), the side of the valve core (13) facing the valve seat (11) is provided with a sealing part, and the end face of the sealing part is provided with a buffer pad (9).

2. A pressure reducing type safety valve according to claim 1, wherein The side of the valve core (13) facing the valve seat (11) is provided with a mounting cavity (6), and the mounting cavity (6) is provided with a pressure sensor, a controller (72), a buzzer (81) and a buzzer (82).

3. A pressure reducing type safety valve according to claim 2, wherein The side of the buffer pad (9) facing the valve seat (11) is provided with a sealing pad (91), and the surface of the sealing pad (91) is zigzag.

4. A pressure reducing type safety valve according to claim 1, wherein Further comprising a reinforcing rod (4), the two ends of the reinforcing rod (4) are connected with the sealing part and the convex ring respectively.

5. A pressure reducing type safety valve according to claim 1, wherein The end of the adjusting ring (5) (2) is provided with a convex anti-skid block (51).

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