CN217683427U

CN217683427U - Negative pressure release safety valve

Info

Publication number: CN217683427U
Application number: CN202221852210.XU
Authority: CN
Inventors: 陈勇; 汤克刚
Original assignee: Constant Sz Equipment Co ltd
Current assignee: Constant Sz Equipment Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-10-28
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses a negative pressure release relief valve relates to relief valve technical field. This negative pressure release relief valve, including negative pressure installation casing, the bottom fixedly connected with negative pressure of negative pressure installation casing connector of breathing in, the bottom of negative pressure installation casing and negative pressure connector of breathing in are the link up state, be provided with the screw thread on the inner wall of negative pressure connector of breathing in, be provided with adjustment mechanism in the negative pressure installation casing, adjustment mechanism includes: the pressure regulating device comprises a pressure regulating nut, a fixed partition plate and a valve core sealing plate, wherein the upper end and the lower end of the pressure regulating nut are in a through state, and the side wall of the fixed partition plate is fixedly connected to the inner wall of the negative pressure mounting shell. Through setting up adjustment mechanism, when making this device be applied to in vacuum system pipeline, equipment or the energy storage jar, can adjust through rotating pressure adjusting nut according to required vacuum pressure, can adapt to different vacuum system, better protection vacuum system's operation.

Description

Negative pressure release safety valve

Technical Field

The utility model relates to a negative pressure release relief valve technical field specifically is a negative pressure release relief valve.

Background

The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value.

In the prior art, the pressure of the required air intake of the current relief valve of single model is usually invariable, and after the installation, can't adjust according to required pressure in the vacuum system, lead to comparatively inconvenient when using, unable fine protection vacuum system pipeline.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a negative pressure release relief valve has solved the problem that above-mentioned background art mentioned.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a negative pressure release relief valve, includes negative pressure installation casing, the bottom fixedly connected with negative pressure of negative pressure installation casing connector of breathing in, the bottom of negative pressure installation casing is the link up state with the negative pressure connector of breathing in, be provided with the screw thread on the inner wall of negative pressure connector of breathing in, be provided with adjustment mechanism in the negative pressure installation casing, adjustment mechanism includes:

the upper end and the lower end of the pressure adjusting nut are in a through state;

the side wall of the fixed clapboard is fixedly connected to the inner wall of the negative pressure installation shell;

and the top end of the valve core sealing plate is contacted with the sealing ring.

Preferably, the pressure adjusting nut penetrates through and is in threaded connection with the valve rod adjusting bolt, the valve rod adjusting bolt penetrates through and is in sliding connection with the inner walls of the fixed partition plate and the valve core piston cylinder in a vertical state through the limiting groove, and the valve core piston cylinder is fixedly connected with the inner wall of the negative pressure installation shell.

Preferably, the top end fixed connection of pressure adjusting nut is on the bottom of rotatory sleeve, rotatory sleeve runs through valve rod adjusting bolt's top, rotatory sleeve runs through and sliding connection is on the lateral wall of valve body safety guard.

Preferably, the valve body safety cover is detachably mounted on the negative pressure mounting shell through a mounting bolt, and an air inlet is formed in the outer wall of the bottom end of the valve body safety cover.

Preferably, the sealing washer is ring type fixed connection in the bottom of sealed disk seat, the lateral wall fixed connection of sealed disk seat is on the inner wall of negative pressure installation casing.

Preferably, the bottom end of the pressure adjusting nut is in contact with one end of a pressure control spring, the other end of the pressure control spring is fixedly connected to the top end of the fixed partition plate, and the pressure control spring penetrates through the valve rod adjusting bolt.

(III) advantageous effects

The utility model provides a negative pressure release relief valve. The method has the following beneficial effects:

(1) This negative pressure release relief valve makes this device when being applied to in vacuum system pipeline, equipment or the energy storage tank through setting up adjustment mechanism, can adjust through rotating pressure adjusting nut according to required vacuum pressure, can adapt to different vacuum system, better protection vacuum system's operation.

(2) This negative pressure release relief valve makes this device when using through setting up adjustment mechanism, can effectually prevent through the valve body safety guard and get into debris when inhaling gaseous release pressure, and when rotatory valve rod adjusting bolt, only need rotate rotatory sleeve in the outside of valve body safety guard, can drive the rotation of pressure adjustment nut to reach the purpose of regulated pressure, it is more convenient to use.

Drawings

FIG. 1 is a schematic view of the overall device of the present invention;

FIG. 2 is a schematic structural view of the entire front side of the present invention;

fig. 3 is a schematic structural view of the whole front section of the present invention.

In the figure: 1. a negative pressure suction connection port; 2. a negative pressure mounting housing; 3. a valve body safety cover; 4. an adjustment mechanism; 5. installing a bolt; 41. a pressure adjusting nut; 42. a valve stem adjusting bolt; 43. a pressure control spring; 44. a spool piston cylinder; 45. fixing the partition board; 46. sealing the valve seat; 47. a seal ring; 48. a valve core closing plate; 49. rotating the sleeve; 410. and an air inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a negative pressure release relief valve includes negative pressure installation casing 2, and the bottom fixedly connected with negative pressure of negative pressure installation casing 2 inhales the connector 1, and the bottom of negative pressure installation casing 2 and negative pressure inhale connector 1 and be the through state, are used for exhausting, thereby be provided with the screw thread on the inner wall of negative pressure inhale connector 1 and be used for fixing the device with the interface connection who sets up on vacuum system pipeline, the energy storage tank, be provided with adjustment mechanism 4 in the negative pressure installation casing 2.

In the embodiment of the present invention, the adjusting mechanism 4 includes:

the upper end and the lower end of the pressure adjusting nut 41 are in a through state;

the side wall of the fixed clapboard 45 is fixedly connected with the inner wall of the negative pressure installation shell 2;

and the top end of the valve core sealing plate 48 is contacted with the sealing ring 47, and the top end of the valve core sealing plate 48 is fixedly connected with the bottom end of the valve rod adjusting bolt 42.

In this embodiment, the pressure adjusting nut 41 penetrates and is screwed on the valve rod adjusting bolt 42, the valve rod adjusting bolt 42 penetrates and is vertically and slidably connected on the inner walls of the fixed partition plate 45 and the valve core piston cylinder 44 through the limiting groove, and the valve core piston cylinder 44 is fixedly connected on the inner wall of the negative pressure mounting shell 2; the top end of the pressure adjusting nut 41 is fixedly connected with the bottom end of a rotating sleeve 49, the rotating sleeve 49 penetrates through the top end of the valve rod adjusting bolt 42, the rotating sleeve 49 penetrates through and is connected to the side wall of the valve body safety cover 3 in a sliding mode, the valve body safety cover 3 provides a certain protection effect for the valve body, and other objects are prevented from being sucked when air is fed; the valve body safety cover 3 is detachably mounted on the negative pressure mounting shell 2 through a mounting bolt 5, and an air inlet 410 for air inlet is formed in the outer wall of the bottom end of the valve body safety cover 3.

Further, the sealing ring 47 is arranged at the bottom end of the sealing valve seat 46 in a circular ring shape, when the valve core closing plate 48 is in contact with the sealing ring 47 and generates extrusion, a sealing effect is provided, and the side wall of the sealing valve seat 46 is fixedly connected with the inner wall of the negative pressure mounting shell 2; the bottom end of the pressure adjusting nut 41 is contacted with one end of the pressure control spring 43, the other end of the pressure control spring 43 is fixedly connected to the top end of the fixed partition plate 45, the pressure control spring 43 penetrates through the valve rod adjusting bolt 42, the degree of compression of the pressure control spring 43 can be controlled by rotating the pressure adjusting nut 41, and therefore pressure is adjusted.

When the device is used (or used), when the device is used, the negative pressure air suction connecting port 1 is connected with an interface arranged on a vacuum system pipeline, equipment or an energy storage tank, when the process vacuum system does not normally work at overpressure, the valve core sealing plate 48 and the sealing ring 47 are in a closed sealing state under the action of the pressure control spring 43, when the pressure of the process vacuum system exceeds the set and adjusted pressure, the valve core sealing plate 48 presses the valve core sealing plate 48 through the gas entering from the air inlet 410 under the action of high-pressure vacuum, so that the valve core sealing plate 48 descends, the gas is discharged from the negative pressure air suction connecting port 1, the vacuum pressure in the vacuum system is released, the effect of protecting the air pressure system is achieved, the valve body safety cover 3 is used for preventing impurities from entering when the sucked gas releases the pressure, the rotary sleeve 49 can be rotated, the rotary sleeve 49 drives the pressure adjusting nut 41 to descend, so that the compression degree of the pressure adjusting nut 41 is increased, and the pressure required for opening the valve core sealing plate 48 is adjusted, and the purpose of protecting the vacuum system pipeline is achieved.

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

Claims

1. The utility model provides a negative pressure release relief valve, includes negative pressure installation casing (2), the bottom fixedly connected with negative pressure of negative pressure installation casing (2) is breathed in connector (1), its characterized in that: the bottom of negative pressure installation casing (2) is the through state with negative pressure connector (1) of breathing in, the negative pressure is breathed in and is provided with the screw thread on the inner wall of connector (1), be provided with adjustment mechanism (4) in negative pressure installation casing (2), adjustment mechanism (4) include:

the pressure adjusting nut (41), the upper and lower ends of the pressure adjusting nut (41) are in a through state;

the side wall of the fixed clapboard (45) is fixedly connected to the inner wall of the negative pressure mounting shell (2);

the top end of the valve core sealing plate (48) is in contact with the sealing ring (47), and the top end of the valve core sealing plate (48) is fixedly connected to the bottom end of the valve rod adjusting bolt (42).

2. The negative pressure relief valve as set forth in claim 1, wherein: the pressure adjusting nut (41) penetrates through and is in threaded connection with the valve rod adjusting bolt (42), the valve rod adjusting bolt (42) penetrates through and is in vertical sliding connection with the inner walls of the fixed partition plate (45) and the valve core piston cylinder (44) through the limiting groove, and the valve core piston cylinder (44) is fixedly connected with the inner wall of the negative pressure mounting shell (2).

3. The negative pressure relief valve as claimed in claim 1, wherein: the top fixed connection of pressure adjusting nut (41) is on the bottom of rotatory sleeve (49), the top of valve rod adjusting bolt (42) is run through in rotatory sleeve (49), rotatory sleeve (49) run through and sliding connection is on the lateral wall of valve body safety guard (3).

4. The negative pressure relief valve as claimed in claim 3, wherein: the valve body safety cover (3) is detachably mounted on the negative pressure mounting shell (2) through a mounting bolt (5), and an air inlet (410) is formed in the outer wall of the bottom end of the valve body safety cover (3).

5. The negative pressure relief valve as claimed in claim 1, wherein: sealing washer (47) are ring type fixed connection in the bottom of sealed disk seat (46), the lateral wall fixed connection of sealed disk seat (46) is on the inner wall of negative pressure installation casing (2).

6. The negative pressure relief valve as set forth in claim 1, wherein: the bottom end of the pressure adjusting nut (41) is contacted with one end of a pressure control spring (43), the other end of the pressure control spring (43) is fixedly connected to the top end of a fixed partition plate (45), and the pressure control spring (43) penetrates through a valve rod adjusting bolt (42).